Version bump

Fix internal error on functions called as SV tasks.

MANIFEST.SKIP

@@ -24,6 +24,8 @@ src/Makefile_obj$
 include/verilated.mk$
 config.cache$
 config.status$
+verilator.log
+verilator.tex
 verilator_bin.*
 .vcsmx_rebuild$
 autom4te\.cache/

Makefile.in

@@ -9,7 +9,7 @@
 #
 #*****************************************************************************
 #
-# Copyright 2003-2010 by Wilson Snyder. This program is free software; you can
+# Copyright 2003-2011 by Wilson Snyder. This program is free software; you can
 # redistribute it and/or modify it under the terms of either the GNU
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
@@ -88,7 +88,10 @@ pkgdatadir = @pkgdatadir@
 datarootdir = @datarootdir@
 
 # Compile options
+CFG_WITH_CCWARN = @CFG_WITH_CCWARN@
 CFG_WITH_DEFENV = @CFG_WITH_DEFENV@
+CFG_WITH_LONGTESTS = @CFG_WITH_LONGTESTS@
+PACKAGE_VERSION = @PACKAGE_VERSION@
 
 #### End of system configuration section. ####
 ######################################################################
@@ -101,8 +104,6 @@ INFOS = README internals.txt verilator.txt verilator.html verilator.1 verilator.
 
 # Files that can be generated, but should be up to date for a distribution.
 DISTDEP = info Makefile
-# Files to distribute.
-DISTBIN = $(wildcard bin/verilator-*)
 
 DISTFILES_INC = $(INFOS) .gitignore Artistic COPYING COPYING.LESSER \
 	*.in *.ac \
@@ -120,6 +121,7 @@ DISTFILES_INC = $(INFOS) .gitignore Artistic COPYING COPYING.LESSER \
 	test_*/.*ignore test_*/Makefile* test_*/*.cpp \
 	test_*/*.pl test_*/*.v test_*/*.vc test_*/*.vh \
 	test_verilated/vgen*.pl \
+	test_regress/t/tsub/*.v* \
 	test_regress/t/*.cpp \
 	test_regress/t/*.h \
 	test_regress/t/*.dat \
@@ -128,7 +130,6 @@ DISTFILES_INC = $(INFOS) .gitignore Artistic COPYING COPYING.LESSER \
 	test_regress/t/*.pl \
 	test_regress/t/*.pf \
 	test_regress/t/*.v* \
-	verilator.* \
 
 INST_PROJ_FILES = \
 	bin/verilator \
@@ -170,7 +171,7 @@ msg_test:
 	@echo
 
 .PHONY:test
-ifeq ($(VERILATOR_AUTHOR_SITE),1)	# Local... Else don't burden users
+ifeq ($(CFG_WITH_LONGTESTS),yes)	# Local... Else don't burden users
 test: test_vcs test_c test_sc test_sp test_verilated test_regress
 else
 test: test_c test_sc test_sp
@@ -202,17 +203,18 @@ test_regress: all_nomsg
 info: $(INFOS)
 
 # Use --no-split to avoid creating filenames > 14 chars.
-verilator.1: bin/verilator
+verilator.1: ${srcdir}/bin/verilator
 	pod2man $< $@
 
-verilator.txt: bin/verilator
+verilator.txt: ${srcdir}/bin/verilator
 	$(POD2TEXT) $< $@
 
-verilator.html: bin/verilator
+verilator.html: ${srcdir}/bin/verilator
 	pod2html $< >$@
 
-verilator.pdf: bin/verilator $(DISTCONFIG)
+# PDF needs DIST variables; but having configure.ac as dependency isn't detected
-	pod2latex --full --out verilator.tex bin/verilator
+verilator.pdf: ${srcdir}/bin/verilator Makefile
+	pod2latex --full --out verilator.tex ${srcdir}/bin/verilator
 	cat < verilator.tex \
 	   | sed 's/\\begin{document}/\\usepackage[left=1.7in,right=1.7in,top=1.3in,bottom=1.3in]{geometry}\n\\begin{document}/' \
 	   | sed 's/\\begin{document}/\\usepackage[pdftex,bookmarks=true,bookmarksnumbered=true,hypertexnames=false,breaklinks=true,linkbordercolor={0 0 1}]{hyperref}\n\\begin{document}/' \
@@ -256,7 +258,7 @@ VL_INST_DATA_SRCDIR_FILES = \
 	test_v/*.[chv]* \
 	test_c/*.[chv]*   test_c/Makefile  test_c/Makefile_obj  \
 	test_sc/*.[chv]*  test_sc/Makefile test_sc/Makefile_obj \
-	test_sp/*.[chv]*  test_sp/Makefile test_sp/Makefile_obj \
+	                  test_sp/Makefile test_sp/Makefile_obj \
 
 installbin:
 	$(SHELL) ${srcdir}/mkinstalldirs $(DESTDIR)$(bindir)
@@ -267,9 +269,11 @@ installbin:
 	$(SHELL) ${srcdir}/mkinstalldirs $(DESTDIR)$(pkgdatadir)/bin
 	( cd ${srcdir}/bin ; $(INSTALL_PROGRAM) verilator_includer $(DESTDIR)$(pkgdatadir)/bin/verilator_includer )
 
+# Man files can either be part of the original kit, or built in current directory
+# So important we use $< so VPATH is searched
 installman: $(VL_INST_MAN_FILES)
 	$(SHELL) ${srcdir}/mkinstalldirs $(DESTDIR)$(mandir)/man1
-	for p in $(VL_INST_MAN_FILES) ; do \
+	for p in $< ; do \
 	  $(INSTALL_DATA) $$p $(DESTDIR)$(mandir)/man1/$$p; \
 	done
 
@@ -314,6 +318,8 @@ install: all_nomsg installbin installman installdata install-msg
 install-here: installman ftp
 
 ifeq ($(VERILATOR_AUTHOR_SITE),1)	# Local... Else don't burden users
+DISTNAMEREV = $(shell sed -e '/DTVERSION/!d' -e 's/.*verilator_\([^"]*\).*/\1/' -e q ${srcdir}/src/config_rev.h)
+
 DIRPROJECT := $(shell project_dir --project)
 VERILATOR_CAD_DIR = $(CAD_DIR)/verilator/$(DISTNAMEREV)/$(DIRPROJECT_ARCH)
 INST_PROJ_CVS = cp_if_cvs_diff
@@ -322,7 +328,7 @@ install-project: dist
 	@echo "Install-project to $(DIRPROJECT)"
 	strip verilator_bin*
 	$(MAKE) install-project-quick
-	for p in verilator.1 ; do \
+	for p in $(VL_INST_MAN_FILES) ; do \
 	  $(INSTALL_DATA) $$p $(DIRPROJECT_PREFIX)/man/man1/$$p; \
 	done
 	$(INST_PROJ_CVS) $(DISTNAME).tgz $(DIRPROJECT)/hw/utils/verilator/verilator.tgz
@@ -346,7 +352,7 @@ install-cadtools: dist
 	strip verilator_bin*
 	$(MAKE) install-cadtools-quick
 	$(SHELL) ${srcdir}/mkinstalldirs $(VERILATOR_CAD_DIR)/man/man1
-	for p in verilator.1 ; do \
+	for p in $(VL_INST_MAN_FILES) ; do \
 	  $(INSTALL_DATA) $$p $(VERILATOR_CAD_DIR)/man/man1/$$p; \
 	done
 	$(INST_PROJ_CVS) $(DISTNAME).tgz $(VERILATOR_CAD_DIR)/verilator.tgz
@@ -370,6 +376,15 @@ endif
 # VERILATOR_AUTHOR_SITE
 endif
 
+CPPCHECK = cppcheck
+CPPCHECK_FLAGS = --enable=all --inline-suppr --suppress=unusedScopedObject
+CPPCHECK_CPP = $(wildcard $(srcdir)/include/*.cpp $(srcdir)/src/*.cpp)
+CPPCHECK_DEP = $(subst .cpp,.cppcheck,$(CPPCHECK_CPP))
+
+cppcheck: $(CPPCHECK_DEP)
+%.cppcheck: %.cpp
+	$(CPPCHECK) $(CPPCHECK_FLAGS) -DVL_DEBUG=1 -I$(srcdir)/include -I$(srcdir)/src $<
+
 ftp: info
 
 install-msg:
@@ -390,8 +405,13 @@ Makefile: Makefile.in config.status $(IN_WILD)
 src/Makefile: src/Makefile.in Makefile
 config.status: configure
 	./config.status --recheck
+
 configure: configure.ac
+ifeq ($(CFG_WITH_CCWARN),yes)	# Local... Else don't burden users
+	autoconf --warnings=all
+else
 	autoconf
+endif
 
 maintainer-clean::
 	@echo "This command is intended for maintainers to use;"
@@ -432,15 +452,12 @@ dist-file-list:
 ######################################################################
 # Distributions
 
-DISTCONFIG = ${srcdir}/src/config_build.h.in
+DISTTITLE := Verilator $(word 1,$(PACKAGE_VERSION))
-
+DISTNAME := verilator-$(word 1,$(PACKAGE_VERSION))
-DISTTITLE := $(shell sed -e '/DTVERSION/!d' -e 's/[^0-9]*\([0-9.a-z]*\).*/verilator-\1/' -e 's/v/V/' -e q $(DISTCONFIG))
+DISTDATEPRE := $(word 2,$(PACKAGE_VERSION))
-DISTNAME := $(shell sed -e '/DTVERSION/!d' -e 's/[^0-9]*\([0-9.a-z]*\).*/verilator-\1/' -e q $(DISTCONFIG))
+DISTDATE := $(subst /,-,$(DISTDATEPRE))
-DISTDATEPRE := $(shell sed -e '/DTVERSION/!d' -e 's/.*\([1-2][0-9][0-9][0-9].[0-9]*[0-9].[0-9]*[0-9]\).*/\1/' -e q $(DISTCONFIG))
-DISTNAMEREV := $(shell sed -e '/DTVERSION/!d' -e 's/.*verilator_\([^"]*\).*/\1/' -e q src/config_rev.h)
 
 DISTTAGNAME := $(subst .,_,$(subst -,_,$(DISTNAME)))
-DISTDATE := $(subst /,-,$(DISTDATEPRE))
 
 tag:
 	svnorcvs tag $(DISTTAGNAME)

TODO

@@ -1,6 +1,6 @@
 // DESCRIPTION: Verilator: List of To Do issues.
 //
-// Copyright 2004-2010 by Wilson Snyder. This program is free software; you can
+// Copyright 2004-2011 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -62,11 +62,15 @@ Usability:
 	* Print version/etc message at runtime. (4.000?)
 	  Include number of lines of code, percent comments, code complexity measurement
 	  <-80chars------------------------------------------------------------------->
-	  Verilator 3.600 - fast, free, open-sourced.  Copyright 2001-2010.
+	  Verilator 3.600 - fast, free, open-sourced.  Copyright 2001-2011.
 	  Verilated #### modules, #### instances, ##### sigs,
 	  	    #### non-comment lines, ##### ops, ### KB model size
 	* Default the --l2name to remove extra "v" level of hierarchy (flag to make "top")
 
+Lint:
+	* CDCRSTLOGIC should allow filtering with paths
+	  "waive CDCRSTLOGIC --from a.b.sig  --to a.c.sig --via OR"
+
 Internal Code:
 	* Eliminate the AstNUser* passed to all visitors; its only needed in V3Width,
 	  and removing it will speed up and simplify all the other code.

bin/verilator_difftree

@@ -99,7 +99,7 @@ sub filter {
 	next if $line =~ / This=/;
 	$line =~ s/0x[a-f0-9]+/0x/g;
 	$line =~ s/<e[0-9]+\#?>/<e>/g;
-	$line =~ s/{\d+}/{}/g if !$Opt_Lineno;
+	$line =~ s/{[a-z]*\d+}/{}/g if !$Opt_Lineno;
 	print $f2 $line;
     }
     $f1->close;
@@ -109,7 +109,7 @@ sub filter {
 #----------------------------------------------------------------------
 
 sub usage {
-    pod2usage(-verbose=>2, -exitval => 2);
+    pod2usage(-verbose=>2, -exitval=>2, -output=>\*STDOUT);
     exit (1);
 }
 
@@ -177,7 +177,7 @@ Do not show differences in line numbering.
 
 The latest version is available from L<http://www.veripool.org/verilator>.
 
-Copyright 2005-2010 by Wilson Snyder.  This package is free software; you can
+Copyright 2005-2011 by Wilson Snyder.  This package is free software; you can
 redistribute it and/or modify it under the terms of either the GNU Lesser
 General Public License Version 3 or the Perl Artistic License Version 2.0.
 

bin/verilator_includer

@@ -3,7 +3,7 @@ eval 'exec perl -wS $0 ${1+"$@"}'
   if 0;
 # DESCRIPTION: Print include statements for each ARGV
 #
-# Copyright 2003-2010 by Wilson Snyder. This package is free software; you can
+# Copyright 2003-2011 by Wilson Snyder. This package is free software; you can
 # redistribute it and/or modify it under the terms of either the GNU Lesser
 # General Public License Version 3 or the Perl Artistic License Version 2.0.
 ######################################################################

bin/verilator_profcfunc

@@ -39,7 +39,7 @@ profcfunc($Opt_File);
 #----------------------------------------------------------------------
 
 sub usage {
-    pod2usage(-verbose=>2, -exitval => 2);
+    pod2usage(-verbose=>2, -exitval=>2, -output=>\*STDOUT);
     exit (1);
 }
 
@@ -208,7 +208,7 @@ Displays this message and program version and exits.
 
 The latest version is available from L<http://www.veripool.org/>.
 
-Copyright 2007-2010 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2007-2011 by Wilson Snyder.  Verilator is free software; you can
 redistribute it and/or modify it under the terms of either the GNU Lesser
 General Public License Version 3 or the Perl Artistic License Version 2.0.
 

configure.ac

@@ -1,35 +1,83 @@
-dnl DESCRIPTION: Process this file with autoconf to produce a configure script.
+# DESCRIPTION: Process this file with autoconf to produce a configure script.
-dnl
+#
-dnl Copyright 2003-2010 by Wilson Snyder. Verilator is free software; you can
+# Copyright 2003-2011 by Wilson Snyder. Verilator is free software; you can
-dnl redistribute it and/or modify it under the terms of either the GNU Lesser
+# redistribute it and/or modify it under the terms of either the GNU Lesser
-dnl General Public License Version 3 or the Perl Artistic License Version 2.0.
+# General Public License Version 3 or the Perl Artistic License Version 2.0.
 
-AC_INIT(src/Verilator.cpp)
+AC_INIT([Verilator],[3.830])
 AC_CONFIG_HEADER(src/config_build.h)
+AC_CONFIG_FILES(Makefile src/Makefile src/Makefile_obj include/verilated.mk)
 
-dnl Special Substitutions
+AC_MSG_RESULT([configuring for $PACKAGE_STRING])
-AC_ARG_ENABLE(defenv,
+
-   [AS_HELP_STRING([--disable-defenv], [disable hardcoded default environment variables])],
+# Special Substitutions - CFG_WITH_DEFENV
-   CFG_WITH_DEFENV=$enableval,
+AC_MSG_CHECKING(whether to disable hardcoded paths)
-   CFG_WITH_DEFENV=yes)
+AC_ARG_ENABLE([defenv],
+              [AS_HELP_STRING([--disable-defenv],
+                              [disable using some hardcoded data paths extracted from some default environment variables (the default is to use hardcoded paths)])],
+              [case "${enableval}" in
+                yes) CFG_WITH_DEFENV=yes ;;
+                no)  CFG_WITH_DEFENV=no ;;
+                *)   AC_MSG_ERROR([bad value ${enableval} for --disable-defenv]) ;;
+               esac],
+              CFG_WITH_DEFENV=yes)
 AC_SUBST(CFG_WITH_DEFENV)
+AC_MSG_RESULT($CFG_WITH_DEFENV)
 
-dnl Compiler flags
+# Special Substitutions - CFG_WITH_CCWARN
+AC_MSG_CHECKING(whether to show and stop on compilation warnings)
+AC_ARG_ENABLE([ccwarn],
+              [AS_HELP_STRING([--enable-ccwarn],
+                              [enable showing and stopping on compilation warnings])],
+              [case "${enableval}" in
+                yes) CFG_WITH_CCWARN=yes ;;
+                no)  CFG_WITH_CCWARN=no ;;
+                *)   AC_MSG_ERROR([bad value ${enableval} for --enable-ccwarn]) ;;
+               esac],
+              [case "x${VERILATOR_AUTHOR_SITE}" in
+                x)   CFG_WITH_CCWARN=no ;;
+                *)   CFG_WITH_CCWARN=yes ;;
+               esac]
+	      )
+AC_SUBST(CFG_WITH_CCWARN)
+AC_MSG_RESULT($CFG_WITH_CCWARN)
+
+# Special Substitutions - CFG_WITH_LONGTESTS
+AC_MSG_CHECKING(whether to run long tests)
+AC_ARG_ENABLE([longtests],
+              [AS_HELP_STRING([--enable-longtests],
+                              [enable running long developer tests])],
+              [case "${enableval}" in
+                yes) CFG_WITH_LONGTESTS=yes ;;
+                no)  CFG_WITH_LONGTESTS=no ;;
+                *)   AC_MSG_ERROR([bad value ${enableval} for --enable-longtests]) ;;
+               esac],
+              [case "x${VERILATOR_AUTHOR_SITE}" in
+                x)   CFG_WITH_LONGTESTS=no ;;
+                *)   CFG_WITH_LONGTESTS=yes ;;
+               esac]
+	      )
+AC_SUBST(CFG_WITH_LONGTESTS)
+AC_MSG_RESULT($CFG_WITH_LONGTESTS)
+
+# Compiler flags
 CFLAGS=-I${includedir}
 CPPFLAGS=-I${includedir}
 CXXFLAGS=-I${includedir}
 LDFLAGS=-L${libdir}
 
-dnl Checks for programs.
+# Checks for programs.
 AC_PROG_CC
 AC_PROG_CXX
 AC_PROG_INSTALL
 
 AC_LANG_PUSH(C++)
 AC_MSG_CHECKING([that C++ compiler can compile simple program])
-AC_TRY_RUN([int main() { return 0; }],
+AC_RUN_IFELSE(
+           [AC_LANG_SOURCE([int main() { return 0; }])],
            AC_MSG_RESULT(yes),
-           AC_MSG_RESULT(no);AC_MSG_ERROR([a working C++ compiler is required]))
+           AC_MSG_RESULT(no);AC_MSG_ERROR([a working C++ compiler is required]),
+	   AC_MSG_RESULT(yes))
 
 AC_PATH_PROG(PERL,perl)
 if test "x$PERL" = "x" ; then
@@ -44,33 +92,54 @@ if test "x$YACC" = "x" ; then
    AC_MSG_ERROR([Cannot find "bison" in your PATH, please install it])
 fi
 
-dnl Checks for libraries.
+# Checks for libraries.
 
-dnl Checks for header files.
+# Checks for typedefs, structures
-AC_HEADER_STDC
-AC_HEADER_SYS_WAIT
-AC_CHECK_HEADERS(fcntl.h unistd.h inttypes.h sys/file.h sys/time.h sys/un.h math.h stdint.h mingw/stdint.h)
-
-dnl Checks for typedefs, structures
 AC_CHECK_TYPE(size_t,unsigned int)
-AC_CHECK_TYPE(uint_t,unsigned int)
-AC_CHECK_TYPE(ulong_t,unsigned long)
 AC_TYPE_SIZE_T
-AC_STRUCT_TM
 
-dnl Checks for compiler characteristics.
+# Checks for compiler characteristics.
 AC_C_INLINE
 
-dnl Checks for library functions.
+AC_DEFUN([_MY_CXX_CHECK_OPT],
+   [# _MY_CXX_CHECK_OPT(flag) -- Check if compiler supports specific options
+    ACO_SAVE_CXXFLAGS="$CXXFLAGS"
+    # -Werror needed otherwise unknown -Wno-div-by-zero won't report problems
+    CXXFLAGS="$CXXFLAGS $1 -Werror"
+    AC_MSG_CHECKING([whether $CXX accepts $1])
+    AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM([],[])],
+	 [_my_result=yes],
+	 [_my_result=no])
+    AC_MSG_RESULT($_my_result)
+    if test "$_my_result" = "yes" ; then
+       CFG_CXXFLAGS_NO_UNUSED="$CFG_CXXFLAGS_NO_UNUSED $1"
+    fi
+    CXXFLAGS="$ACO_SAVE_CXXFLAGS"
+   ])# _MY_CXX_CHECK_OPT
 
-dnl Checks for system services
+# For example, -Wno-div-by-zero isn't in 4.1.2
+_MY_CXX_CHECK_OPT(-Wno-char-subscripts)
+# Random code often does / 0.  Unfortunately VL_DIV_I(0,0) will warn
+# without this flag, even though there's a conditional to prevent the divide.
+# We still don't add no-div-by-zero as it throws message to stdout, though doesn't die.
+#_MY_CXX_CHECK_OPT(-Wno-div-by-zero)
+_MY_CXX_CHECK_OPT(-Wno-sign-compare)
+_MY_CXX_CHECK_OPT(-Wno-uninitialized)
+_MY_CXX_CHECK_OPT(-Wno-unused-parameter)
+_MY_CXX_CHECK_OPT(-Wno-unused-variable)
+AC_SUBST(CFG_CXXFLAGS_NO_UNUSED)
 
-dnl Other install directories
+# Checks for library functions.
+
+# Checks for system services
+
+# Other install directories
 pkgdatadir=${datadir}/verilator
 AC_SUBST(pkgdatadir)
 
-AC_OUTPUT(Makefile src/Makefile src/Makefile_obj include/verilated.mk)
+AC_OUTPUT
 
 AC_MSG_RESULT([])
-AC_MSG_RESULT([Now type 'gmake'])
+AC_MSG_RESULT([Now type 'make' (or sometimes 'gmake') to build Verilator.])
 AC_MSG_RESULT([])

include/verilated.cpp

@@ -1,7 +1,7 @@
 // -*- C++ -*-
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License.
 // Version 2.0.
@@ -26,7 +26,6 @@
 #define _VERILATED_CPP_
 #include "verilated_imp.h"
 #include <cctype>
-#include <vector>
 
 #define VL_VALUE_STRING_MAX_WIDTH 1024	///< Max static char array for VL_VALUE_STRING
 
@@ -285,12 +284,15 @@ void _vl_vsformat(string& output, const char* formatp, va_list ap) {
     // Note also assumes variables < 64 are not wide, this assumption is
     // sometimes not true in low-level routines written here in verilated.cpp
     static VL_THREAD char tmp[VL_VALUE_STRING_MAX_WIDTH];
+    static VL_THREAD char tmpf[VL_VALUE_STRING_MAX_WIDTH];
+    const char* pctp = NULL;  // Most recent %##.##g format
     bool inPct = false;
     bool widthSet = false;
     int width = 0;
     const char* pos = formatp;
     for (; *pos; ++pos) {
 	if (!inPct && pos[0]=='%') {
+	    pctp = pos;
 	    inPct = true;
 	    widthSet = false;
 	    width = 0;
@@ -312,6 +314,9 @@ void _vl_vsformat(string& output, const char* formatp, va_list ap) {
 		widthSet = true;
 		width = width*10 + (fmt - '0');
 		break;
+	    case '.':
+		inPct = true;  // Get more digits
+		break;
 	    case '%':
 		output += '%';
 		break;
@@ -325,6 +330,18 @@ void _vl_vsformat(string& output, const char* formatp, va_list ap) {
 		output += cstrp;
 		break;
 	    }
+	    case 'e':
+	    case 'f':
+	    case 'g': {
+		const int lbits = va_arg(ap, int);
+		double d = va_arg(ap, double);
+		if (lbits) {}  // UNUSED - always 64
+		strncpy(tmpf, pctp, pos-pctp+1);
+		tmpf[pos-pctp+1] = '\0';
+		sprintf(tmp, tmpf, d);
+		output += tmp;
+		break;
+	    }
 	    default: {
 		// Deal with all read-and-print somethings
 		const int lbits = va_arg(ap, int);
@@ -358,14 +375,26 @@ void _vl_vsformat(string& output, const char* formatp, va_list ap) {
 		case 'd': { // Signed decimal
 		    int digits=sprintf(tmp,"%" VL_PRI64 "d",(vlsint64_t)(VL_EXTENDS_QQ(lbits,lbits,ld)));
 		    int needmore = width-digits;
-		    if (needmore>0) output.append(needmore,' '); // Pre-pad spaces
+		    if (needmore>0) {
+			if (pctp && pctp[0] && pctp[1]=='0') { //%0
+			    output.append(needmore,'0'); // Pre-pad zero
+			} else {
+			    output.append(needmore,' '); // Pre-pad spaces
+			}
+		    }
 		    output += tmp;
 		    break;
 		}
 		case 'u': { // Unsigned decimal
 		    int digits=sprintf(tmp,"%" VL_PRI64 "u",ld);
 		    int needmore = width-digits;
-		    if (needmore>0) output.append(needmore,' '); // Pre-pad spaces
+		    if (needmore>0) {
+			if (pctp && pctp[0] && pctp[1]=='0') { //%0
+			    output.append(needmore,'0'); // Pre-pad zero
+			} else {
+			    output.append(needmore,' '); // Pre-pad spaces
+			}
+		    }
 		    output += tmp;
 		    break;
 		}
@@ -569,6 +598,17 @@ IData _vl_vsscanf(FILE* fp,  // If a fscanf
 		    VL_SET_WQ(owp,ld);
 		    break;
 		}
+		case 'f':
+		case 'e':
+		case 'g': { // Real number
+		    _vl_vsss_skipspace(fp,floc,fromp);
+		    _vl_vsss_read(fp,floc,fromp, tmp, "+-.0123456789eE");
+		    if (!tmp[0]) goto done;
+		    union { double r; vlsint64_t ld; } u;
+		    u.r = strtod(tmp, NULL);
+		    VL_SET_WQ(owp,u.ld);
+		    break;
+		}
 		case 't': // FALLTHRU  // Time
 		case 'u': { // Unsigned decimal
 		    _vl_vsss_skipspace(fp,floc,fromp);
@@ -628,6 +668,10 @@ IData _vl_vsscanf(FILE* fp,  // If a fscanf
 //===========================================================================
 // File I/O
 
+FILE* VL_CVT_I_FP(IData lhs) {
+    return VerilatedImp::fdToFp(lhs);
+}
+
 void _VL_VINT_TO_STRING(int obits, char* destoutp, WDataInP sourcep) {
     // See also VL_DATA_TO_STRING_NW
     int lsb=obits-1;
@@ -655,8 +699,8 @@ void _VL_STRING_TO_VINT(int obits, void* destp, int srclen, const char* srcp) {
     for (; i<bytes; i++) { *op++ = 0; }
 }
 
-IData VL_FGETS_IXQ(int obits, void* destp, QData fpq) {
+IData VL_FGETS_IXI(int obits, void* destp, IData fpi) {
-    FILE* fp = VL_CVT_Q_FP(fpq);
+    FILE* fp = VL_CVT_I_FP(fpi);
     if (VL_UNLIKELY(!fp)) return 0;
 
     // The string needs to be padded with 0's in unused spaces in front of
@@ -683,16 +727,26 @@ IData VL_FGETS_IXQ(int obits, void* destp, QData fpq) {
     return got;
 }
 
-QData VL_FOPEN_QI(QData filename, IData mode) {
+IData VL_FOPEN_QI(QData filename, IData mode) {
     IData fnw[2];  VL_SET_WQ(fnw, filename);
     return VL_FOPEN_WI(2, fnw, mode);
 }
-QData VL_FOPEN_WI(int fnwords, WDataInP filenamep, IData mode) {
+IData VL_FOPEN_WI(int fnwords, WDataInP filenamep, IData mode) {
     char filenamez[VL_TO_STRING_MAX_WORDS*VL_WORDSIZE+1];
     _VL_VINT_TO_STRING(fnwords*VL_WORDSIZE, filenamez, filenamep);
     char modez[5];
     _VL_VINT_TO_STRING(VL_WORDSIZE, modez, &mode);
-    return VL_CVT_FP_Q(fopen(filenamez,modez));
+    return VL_FOPEN_S(filenamez,modez);
+}
+IData VL_FOPEN_S(const char* filenamep, const char* modep) {
+    return VerilatedImp::fdNew(fopen(filenamep,modep));
+}
+
+void VL_FCLOSE_I(IData fdi) {
+    FILE* fp = VL_CVT_I_FP(fdi);
+    if (VL_UNLIKELY(!fp)) return;
+    fclose(fp);
+    VerilatedImp::fdDelete(fdi);
 }
 
 void VL_SFORMAT_X(int obits, void* destp, const char* formatp, ...) {
@@ -726,8 +780,8 @@ void VL_WRITEF(const char* formatp, ...) {
     VL_PRINTF("%s", output.c_str());
 }
 
-void VL_FWRITEF(QData fpq, const char* formatp, ...) {
+void VL_FWRITEF(IData fpi, const char* formatp, ...) {
-    FILE* fp = VL_CVT_Q_FP(fpq);
+    FILE* fp = VL_CVT_I_FP(fpi);
     if (VL_UNLIKELY(!fp)) return;
 
     va_list ap;
@@ -739,8 +793,8 @@ void VL_FWRITEF(QData fpq, const char* formatp, ...) {
     fputs(output.c_str(), fp);
 }
 
-IData VL_FSCANF_IX(QData fpq, const char* formatp, ...) {
+IData VL_FSCANF_IX(IData fpi, const char* formatp, ...) {
-    FILE* fp = VL_CVT_Q_FP(fpq);
+    FILE* fp = VL_CVT_I_FP(fpi);
     if (VL_UNLIKELY(!fp)) return 0;
 
     va_list ap;
@@ -883,6 +937,17 @@ void VL_READMEM_W(bool hex, int width, int depth, int array_lsb, int fnwords,
     }
 }
 
+IData VL_SYSTEM_IQ(QData lhs) {
+    IData lhsw[2];  VL_SET_WQ(lhsw, lhs);
+    return VL_SYSTEM_IW(2, lhsw);
+}
+IData VL_SYSTEM_IW(int lhswords, WDataInP filenamep) {
+    char filenamez[VL_TO_STRING_MAX_WORDS*VL_WORDSIZE+1];
+    _VL_VINT_TO_STRING(lhswords*VL_WORDSIZE, filenamez, filenamep);
+    int code = system(filenamez);
+    return code >> 8;  // Want exit status
+}
+
 IData VL_TESTPLUSARGS_I(const char* formatp) {
     string match = VerilatedImp::argPlusMatch(formatp);
     if (match == "") return 0;
@@ -1038,6 +1103,7 @@ VerilatedScope::VerilatedScope() {
     m_callbacksp = NULL;
     m_namep = NULL;
     m_funcnumMax = 0;
+    m_symsp = NULL;
     m_varsp = NULL;
 }
 

include/verilated.h

@@ -1,7 +1,7 @@
 // -*- C++ -*-
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License.
 // Version 2.0.
@@ -35,6 +35,7 @@
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
+#include <cmath>
 // <iostream> avoided to reduce compile time
 // <string> avoided and instead in verilated_heavy.h to reduce compile time
 using namespace std;
@@ -321,11 +322,14 @@ extern WDataOutP VL_ZERO_RESET_W(int obits, WDataOutP outwp);	///< Zero reset a
 extern WDataOutP _vl_moddiv_w(int lbits, WDataOutP owp, WDataInP lwp, WDataInP rwp, bool is_modulus);
 
 /// File I/O
-extern IData VL_FGETS_IXQ(int obits, void* destp, QData fpq);
+extern IData VL_FGETS_IXI(int obits, void* destp, IData fpi);
 
-extern QData VL_FOPEN_WI(int fnwords, WDataInP ofilename, IData mode);
+extern IData VL_FOPEN_S(const char* filenamep, const char* mode);
-extern QData VL_FOPEN_QI(QData ofilename, IData mode);
+extern IData VL_FOPEN_WI(int fnwords, WDataInP ofilename, IData mode);
-inline QData VL_FOPEN_II(IData ofilename, IData mode) { return VL_FOPEN_QI(ofilename,mode); }
+extern IData VL_FOPEN_QI(QData ofilename, IData mode);
+inline IData VL_FOPEN_II(IData ofilename, IData mode) { return VL_FOPEN_QI(ofilename,mode); }
+
+extern void VL_FCLOSE_I(IData fdi);
 
 extern void VL_READMEM_W(bool hex, int width, int depth, int array_lsb, int fnwords,
 			 WDataInP ofilename, void* memp, IData start, IData end);
@@ -336,15 +340,19 @@ inline void VL_READMEM_I(bool hex, int width, int depth, int array_lsb, int fnwo
     VL_READMEM_Q(hex, width,depth,array_lsb,fnwords, ofilename,memp,start,end); }
 
 extern void VL_WRITEF(const char* formatp, ...);
-extern void VL_FWRITEF(QData fpq, const char* formatp, ...);
+extern void VL_FWRITEF(IData fpi, const char* formatp, ...);
 
-extern IData VL_FSCANF_IX(QData fpq, const char* formatp, ...);
+extern IData VL_FSCANF_IX(IData fpi, const char* formatp, ...);
 extern IData VL_SSCANF_IIX(int lbits, IData ld, const char* formatp, ...);
 extern IData VL_SSCANF_IQX(int lbits, QData ld, const char* formatp, ...);
 extern IData VL_SSCANF_IWX(int lbits, WDataInP lwp, const char* formatp, ...);
 
 extern void VL_SFORMAT_X(int obits, void* destp, const char* formatp, ...);
 
+extern IData VL_SYSTEM_IW(int lhsnwords, WDataInP lhs);
+extern IData VL_SYSTEM_IQ(QData lhs);
+inline IData VL_SYSTEM_II(IData lhs) { return VL_SYSTEM_IQ(lhs); }
+
 extern IData VL_TESTPLUSARGS_I(const char* formatp);
 extern IData VL_VALUEPLUSARGS_IW(int rbits, const char* prefixp, char fmt, WDataOutP rwp);
 extern const char* vl_mc_scan_plusargs(const char* prefixp);  // PLIish
@@ -364,15 +372,24 @@ extern const char* vl_mc_scan_plusargs(const char* prefixp);  // PLIish
 #define VL_SET_QW(lwp)		( ((QData)(lwp[0])) | ((QData)(lwp[1])<<((QData)(VL_WORDSIZE)) ))
 #define _VL_SET_QII(ld,rd)      ( ((QData)(ld)<<VL_ULL(32)) | (QData)(rd) )
 
+/// Return FILE* from IData
+extern FILE*  VL_CVT_I_FP(IData lhs);
+
 // Use a union to avoid cast-to-different-size warnings
-/// Return FILE* from QData
-static inline FILE*  VL_CVT_Q_FP(QData lhs) { union { FILE* fp; QData q; } u; u.q=lhs; return u.fp; }
 /// Return void* from QData
 static inline void*  VL_CVT_Q_VP(QData lhs) { union { void* fp; QData q; } u; u.q=lhs; return u.fp; }
-/// Return QData from FILE*
-static inline QData  VL_CVT_FP_Q(FILE* fp) { union { FILE* fp; QData q; } u; u.q=0; u.fp=fp; return u.q; }
 /// Return QData from void*
 static inline QData  VL_CVT_VP_Q(void* fp) { union { void* fp; QData q; } u; u.q=0; u.fp=fp; return u.q; }
+/// Return double from QData (bits, not numerically)
+static inline double VL_CVT_D_Q(QData lhs) { union { double d; QData q; } u; u.q=lhs; return u.d; }
+/// Return QData from double (bits, not numerically)
+static inline QData  VL_CVT_Q_D(double lhs) { union { double d; QData q; } u; u.d=lhs; return u.q; }
+/// Return double from QData (numeric)
+static inline double VL_ITOR_D_I(IData lhs) { return ((double)((vlsint32_t)(lhs))); }
+/// Return QData from double (numeric)
+static inline IData  VL_RTOI_I_D(double lhs) { return ((vlsint32_t)(VL_TRUNC(lhs))); }
+/// Return QData from double (numeric)
+static inline IData  VL_RTOIROUND_I_D(double lhs) { return ((vlsint32_t)(VL_ROUND(lhs))); }
 
 // Sign extend such that if MSB set, we get ffff_ffff, else 0s
 // (Requires clean input)
@@ -391,6 +408,9 @@ void _VL_DEBUG_PRINT_W(int lbits, WDataInP iwp);
 //=========================================================================
 // Pli macros
 
+#ifndef VL_TIME_PRECISION
+# define VL_TIME_PRECISION -12	///< Timescale units only for for VPI return - picoseconds
+#endif
 #ifndef VL_TIME_MULTIPLIER
 # define VL_TIME_MULTIPLIER 1
 #endif
@@ -399,9 +419,11 @@ void _VL_DEBUG_PRINT_W(int lbits, WDataInP iwp);
 #if defined(SYSTEMC_VERSION) && (SYSTEMC_VERSION>20011000)
 # define VL_TIME_I() ((IData)(sc_time_stamp().to_default_time_units()*VL_TIME_MULTIPLIER))
 # define VL_TIME_Q() ((QData)(sc_time_stamp().to_default_time_units()*VL_TIME_MULTIPLIER))
+# define VL_TIME_D() ((double)(sc_time_stamp().to_default_time_units()*VL_TIME_MULTIPLIER))
 #else
 # define VL_TIME_I() ((IData)(sc_time_stamp()*VL_TIME_MULTIPLIER))
 # define VL_TIME_Q() ((QData)(sc_time_stamp()*VL_TIME_MULTIPLIER))
+# define VL_TIME_D() ((double)(sc_time_stamp()*VL_TIME_MULTIPLIER))
 extern double sc_time_stamp();
 #endif
 
@@ -942,16 +964,13 @@ static inline WDataOutP VL_SUB_W(int words, WDataOutP owp,WDataInP lwp,WDataInP
     return(owp);
 }
 
-// Optimization bug in GCC 2.96 and presumably all-pre GCC 3 versions need this workaround
+// Optimization bug in GCC 2.96 and presumably all-pre GCC 3 versions need this workaround,
-#if 1 //defined(__GNUC__) && __GNUC__ < 3
+// we can't just
-static inline IData  VL_UNARYMIN_I(IData data) { return -data; }
+//# define VL_NEGATE_I(data) (-(data))
-static inline QData  VL_UNARYMIN_Q(QData data) { return -data; }
+static inline IData  VL_NEGATE_I(IData data) { return -data; }
-#else
+static inline QData  VL_NEGATE_Q(QData data) { return -data; }
-# define VL_UNARYMIN_I(IData data) (-(data))
-# define VL_UNARYMIN_Q(QData data) (-(data))
-#endif
 
-static inline WDataOutP VL_UNARYMIN_W(int words, WDataOutP owp,WDataInP lwp){
+static inline WDataOutP VL_NEGATE_W(int words, WDataOutP owp,WDataInP lwp){
     QData carry = 0;
     for (int i=0; i<words; i++) {
 	carry = carry + (QData)(IData)(~lwp[i]);
@@ -998,18 +1017,18 @@ static inline WDataOutP VL_MULS_WWW(int,int lbits,int, WDataOutP owp,WDataInP lw
     IData lneg = VL_SIGN_I(lbits,lwp[words-1]);
     if (lneg) { // Negate lhs
 	lwusp = lwstore;
-	VL_UNARYMIN_W(words, lwstore, lwp);
+	VL_NEGATE_W(words, lwstore, lwp);
 	lwstore[words-1] &= VL_MASK_I(lbits);  // Clean it
     }
     IData rneg = VL_SIGN_I(lbits,rwp[words-1]);
     if (rneg) { // Negate rhs
 	rwusp = rwstore;
-	VL_UNARYMIN_W(words, rwstore, rwp);
+	VL_NEGATE_W(words, rwstore, rwp);
 	rwstore[words-1] &= VL_MASK_I(lbits);  // Clean it
     }
     VL_MUL_W(words,owp,lwusp,rwusp);
     owp[words-1] &= VL_MASK_I(lbits);  // Clean.  Note it's ok for the multiply to overflow into the sign bit
-    if ((lneg ^ rneg) & 1) {      // Negate output  (not using UNARYMIN, as owp==lwp)
+    if ((lneg ^ rneg) & 1) {      // Negate output  (not using NEGATE, as owp==lwp)
 	QData carry = 0;
 	for (int i=0; i<words; i++) {
 	    carry = carry + (QData)(IData)(~owp[i]);
@@ -1056,12 +1075,12 @@ static inline WDataOutP VL_DIVS_WWW(int lbits, WDataOutP owp,WDataInP lwp,WDataI
     IData rwstore[VL_MULS_MAX_WORDS];
     WDataInP ltup = lwp;
     WDataInP rtup = rwp;
-    if (lsign) { ltup = _VL_CLEAN_INPLACE_W(lbits, VL_UNARYMIN_W(VL_WORDS_I(lbits), lwstore, lwp)); }
+    if (lsign) { ltup = _VL_CLEAN_INPLACE_W(lbits, VL_NEGATE_W(VL_WORDS_I(lbits), lwstore, lwp)); }
-    if (rsign) { rtup = _VL_CLEAN_INPLACE_W(lbits, VL_UNARYMIN_W(VL_WORDS_I(lbits), rwstore, rwp)); }
+    if (rsign) { rtup = _VL_CLEAN_INPLACE_W(lbits, VL_NEGATE_W(VL_WORDS_I(lbits), rwstore, rwp)); }
     if ((lsign && !rsign) || (!lsign && rsign)) {
 	IData qNoSign[VL_MULS_MAX_WORDS];
 	VL_DIV_WWW(lbits,qNoSign,ltup,rtup);
-	_VL_CLEAN_INPLACE_W(lbits, VL_UNARYMIN_W(VL_WORDS_I(lbits), owp, qNoSign));
+	_VL_CLEAN_INPLACE_W(lbits, VL_NEGATE_W(VL_WORDS_I(lbits), owp, qNoSign));
 	return owp;
     } else {
 	return VL_DIV_WWW(lbits,owp,ltup,rtup);
@@ -1075,12 +1094,12 @@ static inline WDataOutP VL_MODDIVS_WWW(int lbits, WDataOutP owp,WDataInP lwp,WDa
     IData rwstore[VL_MULS_MAX_WORDS];
     WDataInP ltup = lwp;
     WDataInP rtup = rwp;
-    if (lsign) { ltup = _VL_CLEAN_INPLACE_W(lbits, VL_UNARYMIN_W(VL_WORDS_I(lbits), lwstore, lwp)); }
+    if (lsign) { ltup = _VL_CLEAN_INPLACE_W(lbits, VL_NEGATE_W(VL_WORDS_I(lbits), lwstore, lwp)); }
-    if (rsign) { rtup = _VL_CLEAN_INPLACE_W(lbits, VL_UNARYMIN_W(VL_WORDS_I(lbits), rwstore, rwp)); }
+    if (rsign) { rtup = _VL_CLEAN_INPLACE_W(lbits, VL_NEGATE_W(VL_WORDS_I(lbits), rwstore, rwp)); }
     if (lsign) {  // Only dividend sign matters for modulus
 	IData qNoSign[VL_MULS_MAX_WORDS];
 	VL_MODDIV_WWW(lbits,qNoSign,ltup,rtup);
-	_VL_CLEAN_INPLACE_W(lbits, VL_UNARYMIN_W(VL_WORDS_I(lbits), owp, qNoSign));
+	_VL_CLEAN_INPLACE_W(lbits, VL_NEGATE_W(VL_WORDS_I(lbits), owp, qNoSign));
 	return owp;
     } else {
 	return VL_MODDIV_WWW(lbits,owp,ltup,rtup);
@@ -1633,6 +1652,6 @@ static inline WDataOutP VL_CONST_W_9X(int obits, WDataOutP o,
 
 #undef _END
 
-// Debugging
+//======================================================================
 
 #endif /*_VERILATED_H_*/

include/verilated.mk.in

@@ -2,7 +2,7 @@
 ######################################################################
 # DESCRIPTION: Makefile commands for all verilated target files
 #
-# Copyright 2003-2010 by Wilson Snyder. Verilator is free software; you can
+# Copyright 2003-2011 by Wilson Snyder. Verilator is free software; you can
 # redistribute it and/or modify it under the terms of either the GNU Lesser
 # General Public License Version 3 or the Perl Artistic License Version 2.0.
 ######################################################################
@@ -13,6 +13,12 @@ LINK = @CXX@
 AR     = ar
 RANLIB = ranlib
 
+CFG_WITH_CCWARN = @CFG_WITH_CCWARN@
+CFG_WITH_LONGTESTS = @CFG_WITH_LONGTESTS@
+
+# Compiler flags to use to turn off unused and generated code warnings, such as -Wno-div-by-zero
+CFG_CXXFLAGS_NO_UNUSED = @CFG_CXXFLAGS_NO_UNUSED@
+
 ######################################################################
 # Programs
 
@@ -38,13 +44,9 @@ VK_CPPFLAGS_ALWAYS += \
 		-DVM_TRACE=$(VM_TRACE) \
 		-DVM_COVERAGE=$(VM_COVERAGE) \
 
-ifeq ($(VERILATOR_AUTHOR_SITE),1)	# Local... Else don't burden users
+ifeq ($(CFG_WITH_CCWARN),yes)	# Local... Else don't burden users
 VK_CPPFLAGS_WALL += -Wall \
-		-Wno-char-subscripts \
+		$(CFG_CXXFLAGS_NO_UNUSED) \
-		-Wno-sign-compare \
-		-Wno-unused-parameter \
-		-Wno-unused-variable \
-		-Wno-uninitialized \
 		-Werror
 endif
 
@@ -116,6 +118,10 @@ ifeq ($(VM_SP),1)
 	 $(SP_PREPROC) -M sp_preproc.d --tree $(VM_PREFIX).sp_tree \
 		--preproc $(VK_CLASSES_SP)
 else
+ ifeq ($(VM_COVERAGE),1)
+  CPPFLAGS += -I$(SYSTEMPERL_INCLUDE)
+  VPATH    +=   $(SYSTEMPERL_INCLUDE)
+ endif
   preproc:
 endif
 

include/verilated.v

@@ -5,7 +5,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License.
 // Version 2.0.
@@ -27,11 +27,7 @@
   `define coverage_block_off
  `endif
 
- // Hide file descriptor difference
+ // Hide file descriptor difference - deprecated - for older versions
- `ifdef verilator
+ `define verilator_file_descriptor integer
-  `define verilator_file_descriptor reg [63:0]
- `else
-  `define verilator_file_descriptor integer
- `endif
 
 `endif // guard

include/verilated_dpi.cpp

@@ -1,7 +1,7 @@
 // -*- C++ -*-
 //*************************************************************************
 //
-// Copyright 2009-2010 by Wilson Snyder. This program is free software; you can
+// Copyright 2009-2011 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License.
 // Version 2.0.
@@ -25,6 +25,7 @@
 
 #define _VERILATED_DPI_CPP_
 #include "verilatedos.h"
+#include "verilated_dpi.h"
 #include "verilated_imp.h"
 
 // On MSVC++ we need svdpi.h to declare exports, not imports

include/verilated_dpi.h

@@ -0,0 +1,64 @@
+// -*- C++ -*-
+//*************************************************************************
+//
+// Copyright 2003-2011 by Wilson Snyder. This program is free software; you can
+// redistribute it and/or modify it under the terms of either the GNU
+// Lesser General Public License Version 3 or the Perl Artistic License.
+// Version 2.0.
+//
+// Verilator is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+//*************************************************************************
+///
+/// \file
+/// \brief Verilator: Common include for all Verilated C files that use DPI
+///
+///	This file is included automatically by Verilator at the top of
+///	all C++ files it generates where DPI is used.  It contains
+///	DPI interface functions required by the Verilated code.
+///
+/// Code available from: http://www.veripool.org/verilator
+///
+//*************************************************************************
+
+
+#ifndef _VERILATED_DPI_H_
+#define _VERILATED_DPI_H_ 1 ///< Header Guard
+
+#include "verilated.h"   // Presumed done by caller
+#include "svdpi.h"
+
+//===================================================================
+// SETTING OPERATORS
+
+/// Return svBitVecVal from WData
+static inline void VL_SET_W_SVBV(int obits, WDataOutP owp, svBitVecVal* lwp) {
+    int words = VL_WORDS_I(obits);
+    for (int i=0; i<words-1; i++) owp[i]=lwp[i];
+    owp[words-1] = lwp[words-1] & VL_MASK_I(obits);
+}
+static inline void VL_SET_SVBV_W(int obits, svBitVecVal* owp, WDataInP lwp) {
+    int words = VL_WORDS_I(obits);
+    for (int i=0; i<words-1; i++) owp[i]=lwp[i];
+    owp[words-1] = lwp[words-1] & VL_MASK_I(obits);
+}
+static inline void VL_SET_W_SVLV(int obits, WDataOutP owp, svLogicVecVal* lwp) {
+    // Note we ignore X/Z in svLogicVecVal
+    int words = VL_WORDS_I(obits);
+    for (int i=0; i<words-1; i++) owp[i]=lwp[i].aval;
+    owp[words-1] = lwp[words-1].aval & VL_MASK_I(obits);
+}
+static inline void VL_SET_SVLV_W(int obits, svLogicVecVal* owp, WDataInP lwp) {
+    // Note we don't create X/Z in svLogicVecVal
+    int words = VL_WORDS_I(obits);
+    for (int i=0; i<words; i++) owp[i].bval=0;
+    for (int i=0; i<words-1; i++) owp[i].aval=lwp[i];
+    owp[words-1].aval = lwp[words-1] & VL_MASK_I(obits);
+}
+
+//======================================================================
+
+#endif // _VERILATED_DPI_H_

include/verilated_heavy.h

@@ -1,7 +1,7 @@
 // -*- C++ -*-
 //*************************************************************************
 //
-// Copyright 2010-2010 by Wilson Snyder. This program is free software; you can
+// Copyright 2010-2011 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License.
 // Version 2.0.

include/verilated_imp.h

@@ -1,7 +1,7 @@
 // -*- C++ -*-
 //*************************************************************************
 //
-// Copyright 2009-2010 by Wilson Snyder. This program is free software; you can
+// Copyright 2009-2011 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License.
 // Version 2.0.
@@ -35,6 +35,7 @@
 
 #include <map>
 #include <vector>
+#include <deque>
 #include <string>
 
 class VerilatedScope;
@@ -62,9 +63,18 @@ class VerilatedImp {
     ExportNameMap	m_exportMap;	///< Map of <export_func_proto, func number>
     int			m_exportNext;	///< Next export funcnum
 
+    // File I/O
+    vector<FILE*>	m_fdps;		///< File descriptors
+    deque<IData>	m_fdFree;	///< List of free descriptors (SLOW - FOPEN/CLOSE only)
+
 public: // But only for verilated*.cpp
     // CONSTRUCTORS
-    VerilatedImp() : m_argVecLoaded(false), m_exportNext(0) {}
+    VerilatedImp() : m_argVecLoaded(false), m_exportNext(0) {
+	m_fdps.resize(3);
+	m_fdps[0] = stdin;
+	m_fdps[1] = stdout;
+	m_fdps[2] = stderr;
+    }
     ~VerilatedImp() {}
 
     // METHODS - arguments
@@ -184,6 +194,34 @@ public: // But only for verilated*.cpp
     }
     // We don't free up m_exportMap until the end, because we can't be sure
     // what other models are using the assigned funcnum's.
+
+public: // But only for verilated*.cpp
+    // METHODS - file IO
+    static IData fdNew(FILE* fp) {
+	if (VL_UNLIKELY(!fp)) return 0;
+	// Bit 31 indicates it's a descriptor not a MCD
+	if (s_s.m_fdFree.empty()) {
+	    // Need to create more space in m_fdps and m_fdFree
+	    size_t start = s_s.m_fdps.size();
+	    s_s.m_fdps.resize(start*2);
+	    for (size_t i=start; i<start*2; i++) s_s.m_fdFree.push_back((IData)i);
+	}
+	IData idx = s_s.m_fdFree.back(); s_s.m_fdFree.pop_back();
+	s_s.m_fdps[idx] = fp;
+	return (idx | (1UL<<31));  // bit 31 indicates not MCD
+    }
+    static void fdDelete(IData fdi) {
+	IData idx = VL_MASK_I(31) & fdi;
+	if (VL_UNLIKELY(!(fdi & (1ULL<<31)) || idx >= s_s.m_fdps.size())) return;
+	if (VL_UNLIKELY(!s_s.m_fdps[idx])) return;  // Already free
+	s_s.m_fdps[idx] = NULL;
+	s_s.m_fdFree.push_back(idx);
+    }
+    static inline FILE* fdToFp(IData fdi) {
+	IData idx = VL_MASK_I(31) & fdi;
+	if (VL_UNLIKELY(!(fdi & (1ULL<<31)) || idx >= s_s.m_fdps.size())) return NULL;
+	return s_s.m_fdps[idx];
+    }
 };
 
 #endif  // Guard

include/verilated_sc.h

@@ -1,7 +1,7 @@
 // -*- C++ -*-
 //*************************************************************************
 //
-// Copyright 2009-2010 by Wilson Snyder. This program is free software; you can
+// Copyright 2009-2011 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License.
 // Version 2.0.

include/verilated_syms.h

@@ -1,7 +1,7 @@
 // -*- C++ -*-
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License.
 // Version 2.0.

include/verilated_vcd_c.cpp

@@ -3,7 +3,7 @@
 //
 // THIS MODULE IS PUBLICLY LICENSED
 //
-// Copyright 2001-2010 by Wilson Snyder.  This program is free software;
+// Copyright 2001-2011 by Wilson Snyder.  This program is free software;
 // you can redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License Version 2.0.
 //

include/verilated_vcd_c.h

@@ -3,7 +3,7 @@
 //
 // THIS MODULE IS PUBLICLY LICENSED
 //
-// Copyright 2001-2010 by Wilson Snyder.  This program is free software;
+// Copyright 2001-2011 by Wilson Snyder.  This program is free software;
 // you can redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License Version 2.0.
 //
@@ -86,8 +86,8 @@ private:
     NameMap*			m_namemapp;	///< List of names for the header
     static vector<VerilatedVcd*>	s_vcdVecp;	///< List of all created traces
 
-    inline size_t bufferSize() { return 256*1024; }  // See below for slack calculation
+    inline static size_t bufferSize() { return 256*1024; }  // See below for slack calculation
-    inline size_t bufferInsertSize() { return 16*1024; }
+    inline static size_t bufferInsertSize() { return 16*1024; }
     void bufferFlush();
     void bufferCheck() {
 	// Flush the write buffer if there's not enough space left for new information
@@ -110,6 +110,7 @@ private:
     void dumpHeader();
     void dumpPrep (vluint64_t timeui);
     void dumpFull (vluint64_t timeui);
+    // cppcheck-suppress functionConst
     void dumpDone ();
     inline void printCode (vluint32_t code) {
 	if (code>=(94*94*94)) *m_writep++ = ((char)((code/94/94/94)%94+33));
@@ -117,7 +118,7 @@ private:
 	if (code>=(94))       *m_writep++ = ((char)((code/94)%94+33));
 	*m_writep++ = ((char)((code)%94+33));
     }
-    string stringCode (vluint32_t code) {
+    static string stringCode (vluint32_t code) {
 	string out;
 	if (code>=(94*94*94)) out += ((char)((code/94/94/94)%94+33));
 	if (code>=(94*94))    out += ((char)((code/94/94)%94+33));
@@ -141,6 +142,8 @@ public:
 	m_evcd = false;
 	m_scopeEscape = '.';  // Backward compatibility
 	m_wroteBytes = 0;
+	m_fd = 0;
+	m_fullDump = true;
     }
     ~VerilatedVcd();
 

include/verilated_vcd_sc.cpp

@@ -3,7 +3,7 @@
 //
 // THIS MODULE IS PUBLICLY LICENSED
 //
-// Copyright 2001-2010 by Wilson Snyder.  This program is free software;
+// Copyright 2001-2011 by Wilson Snyder.  This program is free software;
 // you can redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License Version 2.0.
 //

include/verilated_vcd_sc.h

@@ -3,7 +3,7 @@
 //
 // THIS MODULE IS PUBLICLY LICENSED
 //
-// Copyright 2001-2010 by Wilson Snyder.  This program is free software;
+// Copyright 2001-2011 by Wilson Snyder.  This program is free software;
 // you can redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License Version 2.0.
 //

include/verilated_vpi.cpp

@@ -0,0 +1,33 @@
+// -*- C++ -*-
+//*************************************************************************
+//
+// Copyright 2009-2011 by Wilson Snyder. This program is free software; you can
+// redistribute it and/or modify it under the terms of either the GNU
+// Lesser General Public License Version 3 or the Perl Artistic License.
+// Version 2.0.
+//
+// Verilator is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+//=========================================================================
+///
+/// \file
+/// \brief Verilator: VPI implementation code
+///
+///	This file must be compiled and linked against all objects
+///	created from Verilator or called by Verilator that use the VPI.
+///
+/// Code available from: http://www.veripool.org/verilator
+///
+//=========================================================================
+
+#include "verilated_vpi.h"
+
+//======================================================================
+
+VerilatedVpi VerilatedVpi::s_s;  // Singleton
+vluint8_t* VerilatedVpio::s_freeHead = NULL;
+
+//======================================================================

include/verilated_vpi.h

@@ -0,0 +1,857 @@
+// -*- C++ -*-
+//*************************************************************************
+//
+// Copyright 2009-2011 by Wilson Snyder. This program is free software; you can
+// redistribute it and/or modify it under the terms of either the GNU
+// Lesser General Public License Version 3 or the Perl Artistic License.
+// Version 2.0.
+//
+// Verilator is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+//=========================================================================
+///
+/// \file
+/// \brief Verilator: VPI implementation code
+///
+///	This file must be compiled and linked against all objects
+///	created from Verilator or called by Verilator that use the VPI.
+///
+///	"//-" indicates features that are as yet unimplemented.
+///
+/// Code available from: http://www.veripool.org/verilator
+///
+//=========================================================================
+
+#ifndef CHPI_VERILATED_VPI_H
+#define CHPI_VERILATED_VPI_H 1
+
+#include "verilated.h"
+#include "verilated_syms.h"
+
+//======================================================================
+// From IEEE 1800-2009 annex K
+
+#include "vltstd/vpi_user.h"
+
+//======================================================================
+// Internal macros
+
+// Not supported yet
+#define _VL_VPI_UNIMP() \
+    vl_fatal(__FILE__,__LINE__,"",Verilated::catName("Unsupported VPI function: ",VL_FUNC))
+
+//======================================================================
+// Implementation
+
+#include <set>
+
+#define VL_DEBUG_IF_PLI VL_DEBUG_IF
+
+// Base VPI handled object
+class VerilatedVpio {
+    // MEM MANGLEMENT
+    static vluint8_t* s_freeHead;
+
+public:
+    // CONSTRUCTORS
+    VerilatedVpio() {}
+    virtual ~VerilatedVpio() {}
+    inline static void* operator new(size_t size) {
+	// We new and delete tons of vpi structures, so keep them around
+	// To simplify our free list, we use a size large enough for all derived types
+	// We reserve word zero for the next pointer, as that's safer in case a
+	// dangling reference to the original remains around.
+	static size_t chunk = 96;
+	if (VL_UNLIKELY(size>chunk)) vl_fatal(__FILE__,__LINE__,"", "increase chunk");
+	if (VL_LIKELY(s_freeHead)) {
+	    vluint8_t* newp = s_freeHead;
+	    s_freeHead = *((vluint8_t**)newp);
+	    return newp+8;
+	} else {
+	    // +8: 8 bytes for next
+	    vluint8_t* newp = (vluint8_t*)(::operator new(chunk+8));
+	    return newp+8;
+	}
+    }
+    inline static void operator delete(void* obj, size_t size) {
+	vluint8_t* oldp = ((vluint8_t*)obj)-8;
+	*((void**)oldp) = s_freeHead;
+	s_freeHead = oldp;
+    }
+    // MEMBERS
+    static inline VerilatedVpio* castp(vpiHandle h) { return dynamic_cast<VerilatedVpio*>((VerilatedVpio*)h); }
+    inline vpiHandle castVpiHandle() { return (vpiHandle)(this); }
+    // ACCESSORS
+    virtual const char* name() { return "<null>"; }
+    virtual const char* fullname() { return "<null>"; }
+    virtual const char* defname() { return "<null>"; }
+    virtual vpiHandle dovpi_scan() { return 0; }
+};
+
+typedef PLI_INT32 (*VerilatedPliCb)(struct t_cb_data *);
+
+class VerilatedVpioCb : public VerilatedVpio {
+    t_cb_data		m_cbData;
+    s_vpi_value		m_value;
+    QData		m_time;
+public:
+    // cppcheck-suppress uninitVar  // m_value
+    VerilatedVpioCb(const t_cb_data* cbDatap, QData time)
+	: m_cbData(*cbDatap), m_time(time) {
+	m_cbData.value = &m_value;
+    }
+    virtual ~VerilatedVpioCb() {}
+    static inline VerilatedVpioCb* castp(vpiHandle h) { return dynamic_cast<VerilatedVpioCb*>((VerilatedVpio*)h); }
+    vluint32_t reason() const { return m_cbData.reason; }
+    VerilatedPliCb cb_rtnp() const { return m_cbData.cb_rtn; }
+    t_cb_data* cb_datap() { return &(m_cbData); }
+    QData time() const { return m_time; }
+};
+
+class VerilatedVpioConst : public VerilatedVpio {
+    vlsint32_t	m_num;
+public:
+    VerilatedVpioConst(vlsint32_t num) : m_num(num) {}
+    virtual ~VerilatedVpioConst() {}
+    static inline VerilatedVpioConst* castp(vpiHandle h) { return dynamic_cast<VerilatedVpioConst*>((VerilatedVpio*)h); }
+    vlsint32_t num() const { return m_num; }
+};
+
+class VerilatedVpioRange : public VerilatedVpio {
+    vlsint32_t	m_lhs;	// Ranges can be signed
+    vlsint32_t	m_rhs;
+    bool	m_iteration;
+public:
+    VerilatedVpioRange(vlsint32_t lhs, vlsint32_t rhs) : m_lhs(lhs), m_rhs(rhs), m_iteration(0) {}
+    virtual ~VerilatedVpioRange() {}
+    static inline VerilatedVpioRange* castp(vpiHandle h) { return dynamic_cast<VerilatedVpioRange*>((VerilatedVpio*)h); }
+    vlsint32_t lhs() const { return m_lhs; }
+    vlsint32_t rhs() const { return m_rhs; }
+    int iteration() const { return m_iteration; }
+    void iterationInc() { ++m_iteration; }
+    virtual vpiHandle dovpi_scan() {
+	if (!iteration()) {
+	    VerilatedVpioRange* nextp = new VerilatedVpioRange(*this);
+	    nextp->iterationInc();
+	    return ((nextp)->castVpiHandle());
+	} else {
+	    return 0;  // End of list - only one deep
+	}
+    }
+};
+
+class VerilatedVpioScope : public VerilatedVpio {
+    const VerilatedScope*	m_scopep;
+public:
+    VerilatedVpioScope(const VerilatedScope* scopep)
+	: m_scopep(scopep) {}
+    virtual ~VerilatedVpioScope() {}
+    static inline VerilatedVpioScope* castp(vpiHandle h) { return dynamic_cast<VerilatedVpioScope*>((VerilatedVpio*)h); }
+    const VerilatedScope* scopep() const { return m_scopep; }
+    virtual const char* name() { return m_scopep->name(); }
+    virtual const char* fullname() { return m_scopep->name(); }
+};
+
+class VerilatedVpioVar : public VerilatedVpio {
+    const VerilatedVar*		m_varp;
+    const VerilatedScope*	m_scopep;
+    vluint8_t*			m_prevDatap;	// Previous value of data, for cbValueChange
+    vluint32_t			m_mask;		// memoized variable mask
+    vluint32_t			m_entSize;	// memoized variable size
+protected:
+    void*			m_varDatap;	// varp()->datap() adjusted for array entries
+    vlsint32_t			m_index;
+public:
+    VerilatedVpioVar(const VerilatedVar* varp, const VerilatedScope* scopep)
+	: m_varp(varp), m_scopep(scopep), m_index(0) {
+	m_prevDatap = NULL;
+	m_mask = VL_MASK_I(varp->range().bits());
+	m_entSize = varp->entSize();
+	m_varDatap = varp->datap();
+    }
+    virtual ~VerilatedVpioVar() {
+	if (m_prevDatap) { delete [] m_prevDatap; m_prevDatap = NULL; }
+    }
+    static inline VerilatedVpioVar* castp(vpiHandle h) { return dynamic_cast<VerilatedVpioVar*>((VerilatedVpio*)h); }
+    const VerilatedVar* varp() const { return m_varp; }
+    const VerilatedScope* scopep() const { return m_scopep; }
+    vluint32_t mask() const { return m_mask; }
+    vluint32_t entSize() const { return m_entSize; }
+    virtual const char* name() { return m_varp->name(); }
+    virtual const char* fullname() {
+	static VL_THREAD string out;
+	out = string(m_scopep->name())+"."+name();
+	return out.c_str();
+    }
+    void* prevDatap() const { return m_prevDatap; }
+    void* varDatap() const { return m_varDatap; }
+    void createPrevDatap() {
+	if (VL_UNLIKELY(!m_prevDatap)) {
+	    m_prevDatap = new vluint8_t [entSize()];
+	    memcpy(prevDatap(), varp()->datap(), entSize());
+	}
+    }
+};
+
+class VerilatedVpioVarIndex : public VerilatedVpioVar {
+public:
+    VerilatedVpioVarIndex(const VerilatedVar* varp, const VerilatedScope* scopep,
+			  vlsint32_t index, int offset)
+	: VerilatedVpioVar(varp, scopep) {
+	m_index = index;
+	m_varDatap = ((vluint8_t*)varp->datap()) + entSize()*offset;
+    }
+    virtual ~VerilatedVpioVarIndex() {}
+    static inline VerilatedVpioVarIndex* castp(vpiHandle h) { return dynamic_cast<VerilatedVpioVarIndex*>((VerilatedVpio*)h); }
+    virtual const char* fullname() {
+	static VL_THREAD string out;
+	char num[20]; sprintf(num,"%d",m_index);
+	out = string(scopep()->name())+"."+name()+"["+num+"]";
+	return out.c_str();
+    }
+};
+
+class VerilatedVpioVarIter : public VerilatedVpio {
+    const VerilatedScope*	m_scopep;
+    VerilatedVarNameMap::iterator m_it;
+    bool m_started;
+public:
+    VerilatedVpioVarIter(const VerilatedScope* scopep)
+	: m_scopep(scopep), m_started(false) {  }
+    virtual ~VerilatedVpioVarIter() {}
+    static inline VerilatedVpioVarIter* castp(vpiHandle h) { return dynamic_cast<VerilatedVpioVarIter*>((VerilatedVpio*)h); }
+    virtual vpiHandle dovpi_scan() {
+	if (VL_LIKELY(m_scopep->varsp())) {
+	    if (VL_UNLIKELY(!m_started)) { m_it = m_scopep->varsp()->begin(); m_started=true; }
+	    else if (VL_UNLIKELY(m_it == m_scopep->varsp()->end())) return 0;
+	    else ++m_it;
+	    if (m_it == m_scopep->varsp()->end()) return 0;
+	    return ((new VerilatedVpioVar(&(m_it->second), m_scopep))
+		    ->castVpiHandle());
+	} else {
+	    return 0;  // End of list - only one deep
+	}
+    }
+};
+
+//======================================================================
+
+struct VerilatedVpiTimedCbsCmp {
+    /// Ordering sets keyed by time, then callback descriptor
+    bool operator() (const pair<QData,VerilatedVpioCb*>& a,
+		     const pair<QData,VerilatedVpioCb*>& b) const {
+	if (a.first < b.first) return 1;
+	if (a.first > b.first) return 0;
+	return a.second < b.second;
+    }
+};
+
+class VerilatedVpi {
+    enum { CB_ENUM_MAX_VALUE = cbAtEndOfSimTime+1 };	// Maxium callback reason
+    typedef set<VerilatedVpioCb*> VpioCbSet;
+    typedef set<pair<QData,VerilatedVpioCb*>,VerilatedVpiTimedCbsCmp > VpioTimedCbs;
+
+    VpioCbSet		m_cbObjSets[CB_ENUM_MAX_VALUE];	// Callbacks for each supported reason
+    VpioTimedCbs	m_timedCbs;	// Time based callbacks
+
+    static VerilatedVpi s_s;		// Singleton
+
+public:
+    VerilatedVpi() {}
+    ~VerilatedVpi() {}
+    static void cbReasonAdd(VerilatedVpioCb* vop) {
+	if (vop->reason() == cbValueChange) {
+	    if (VerilatedVpioVar* varop = VerilatedVpioVar::castp(vop->cb_datap()->obj)) {
+		varop->createPrevDatap();
+	    }
+	}
+	if (VL_UNLIKELY(vop->reason() >= CB_ENUM_MAX_VALUE)) vl_fatal(__FILE__,__LINE__,"", "vpi bb reason too large");
+	s_s.m_cbObjSets[vop->reason()].insert(vop);
+    }
+    static void cbTimedAdd(VerilatedVpioCb* vop) {
+	s_s.m_timedCbs.insert(make_pair(vop->time(), vop));
+    }
+    static void cbReasonRemove(VerilatedVpioCb* cbp) {
+	VpioCbSet& cbObjSet = s_s.m_cbObjSets[cbp->reason()];
+	VpioCbSet::iterator it=cbObjSet.find(cbp);
+	if (VL_LIKELY(it != cbObjSet.end())) {
+	    cbObjSet.erase(it);
+	}
+    }
+    static void cbTimedRemove(VerilatedVpioCb* cbp) {
+	VpioTimedCbs::iterator it=s_s.m_timedCbs.find(make_pair(cbp->time(),cbp));
+	if (VL_LIKELY(it != s_s.m_timedCbs.end())) {
+	    s_s.m_timedCbs.erase(it);
+	}
+    }
+    static void callTimedCbs() {
+	QData time = VL_TIME_Q();
+	for (VpioTimedCbs::iterator it=s_s.m_timedCbs.begin(); it!=s_s.m_timedCbs.end(); ) {
+	    if (VL_UNLIKELY(it->first <= time)) {
+		VerilatedVpioCb* vop = it->second;
+		++it;  // iterator may be deleted by callback
+		VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  timed_callback %p\n",vop););
+		(vop->cb_rtnp()) (vop->cb_datap());
+	    }
+	    else { ++it; }
+	}
+    }
+    static QData cbNextDeadline() {
+	VpioTimedCbs::iterator it=s_s.m_timedCbs.begin();
+	if (VL_LIKELY(it!=s_s.m_timedCbs.end())) {
+	    return it->first;
+	} else {
+	    return ~VL_ULL(0);  // maxquad
+	}
+    }
+    static void callCbs(vluint32_t reason) {
+	VpioCbSet& cbObjSet = s_s.m_cbObjSets[reason];
+	for (VpioCbSet::iterator it=cbObjSet.begin(); it!=cbObjSet.end();) {
+	    VerilatedVpioCb* vop = *it;
+	    ++it;  // iterator may be deleted by callback
+	    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  reason_callback %d %p\n",reason,vop););
+	    (vop->cb_rtnp()) (vop->cb_datap());
+	}
+    }
+    static void callValueCbs() {
+	VpioCbSet& cbObjSet = s_s.m_cbObjSets[cbValueChange];
+	for (VpioCbSet::iterator it=cbObjSet.begin(); it!=cbObjSet.end();) {
+	    VerilatedVpioCb* vop = *it;
+	    ++it;  // iterator may be deleted by callback
+	    if (VerilatedVpioVar* varop = VerilatedVpioVar::castp(vop->cb_datap()->obj)) {
+		void* newDatap = varop->varDatap();
+		void* prevDatap = varop->prevDatap();  // Was malloced when we added the callback
+		VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  value_test %s v[0]=%d/%d %p %p\n",
+					  varop->fullname(), *((CData*)newDatap), *((CData*)prevDatap),
+					  newDatap, prevDatap););
+		if (memcmp(prevDatap, newDatap, varop->entSize())) {
+		    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  value_callback %p %s v[0]=%d\n",
+					      vop,varop->fullname(), *((CData*)newDatap)););
+		    memcpy(prevDatap, newDatap, varop->entSize());
+		    vpi_get_value(vop->cb_datap()->obj, vop->cb_datap()->value);
+		    (vop->cb_rtnp()) (vop->cb_datap());
+		}
+	    }
+	}
+    }
+};
+
+// callback related
+
+vpiHandle vpi_register_cb(p_cb_data cb_data_p) {
+    if (VL_UNLIKELY(!cb_data_p)) return NULL;
+    switch (cb_data_p->reason) {
+    case cbAfterDelay: {
+	QData time = 0;
+	if (cb_data_p->time) time = _VL_SET_QII(cb_data_p->time->high, cb_data_p->time->low);
+	VerilatedVpioCb* vop = new VerilatedVpioCb(cb_data_p, VL_TIME_Q()+time);
+	VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_register_cb %d %p delay=%" VL_PRI64 "d\n",cb_data_p->reason,vop,time););
+	VerilatedVpi::cbTimedAdd(vop);
+	return vop->castVpiHandle();
+    }
+    case cbReadWriteSynch:		// FALLTHRU // Supported via vlt_main.cpp
+    case cbReadOnlySynch:		// FALLTHRU // Supported via vlt_main.cpp
+    case cbNextSimTime:			// FALLTHRU // Supported via vlt_main.cpp
+    case cbStartOfSimulation:		// FALLTHRU // Supported via vlt_main.cpp
+    case cbEndOfSimulation:		// FALLTHRU // Supported via vlt_main.cpp
+    case cbValueChange:			// FALLTHRU // Supported via vlt_main.cpp
+    case cbEnterInteractive:		// FALLTHRU // NOP, but need to return handle, so make object
+    case cbExitInteractive:		// FALLTHRU // NOP, but need to return handle, so make object
+    case cbInteractiveScopeChange: {	// FALLTHRU // NOP, but need to return handle, so make object
+	VerilatedVpioCb* vop = new VerilatedVpioCb(cb_data_p, 0);
+	VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_register_cb %d %p\n",cb_data_p->reason,vop););
+	VerilatedVpi::cbReasonAdd(vop);
+	return vop->castVpiHandle();
+    }
+    default:
+	_VL_VPI_UNIMP(); return NULL;
+    };
+}
+
+PLI_INT32 vpi_remove_cb(vpiHandle object) {
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_remove_cb %p\n",object););
+    VerilatedVpioCb* vop = VerilatedVpioCb::castp(object);
+    if (VL_UNLIKELY(!vop)) return 0;
+    if (vop->cb_datap()->reason == cbAfterDelay) {
+	VerilatedVpi::cbTimedRemove(vop);
+    } else {
+	VerilatedVpi::cbReasonRemove(vop);
+    }
+    return 1;
+}
+
+//-void vpi_get_cb_info(vpiHandle object, p_cb_data cb_data_p) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+//-vpiHandle vpi_register_systf(p_vpi_systf_data systf_data_p) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+//-void vpi_get_systf_info(vpiHandle object, p_vpi_systf_data systf_data_p) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+
+// for obtaining handles
+
+vpiHandle vpi_handle_by_name(PLI_BYTE8* namep, vpiHandle scope) {
+    if (VL_UNLIKELY(!namep)) return NULL;
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_handle_by_name %s %p\n",namep,scope););
+    VerilatedVpioScope* voScopep = VerilatedVpioScope::castp(scope);
+    const VerilatedVar* varp;
+    const VerilatedScope* scopep;
+    string scopeAndName = namep;
+    if (voScopep) {
+	scopeAndName = string(voScopep->fullname()) + "." + namep;
+	namep = (PLI_BYTE8*)scopeAndName.c_str();
+    }
+    {
+	// This doesn't yet follow the hierarchy in the proper way
+	scopep = Verilated::scopeFind(namep);
+	if (scopep) {  // Whole thing found as a scope
+	    return (new VerilatedVpioScope(scopep))->castVpiHandle();
+	}
+	const char* baseNamep = scopeAndName.c_str();
+	string scopename;
+	const char* dotp = strrchr(namep, '.');
+	if (VL_LIKELY(dotp)) {
+	    baseNamep = dotp+1;
+	    scopename = string(namep,dotp-namep);
+	}
+	scopep = Verilated::scopeFind(scopename.c_str());
+	if (!scopep) return NULL;
+	varp = scopep->varFind(baseNamep);
+    }
+    if (!varp) return NULL;
+    return (new VerilatedVpioVar(varp, scopep))->castVpiHandle();
+}
+
+vpiHandle vpi_handle_by_index(vpiHandle object, PLI_INT32 indx) {
+    // Used to get array entries
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_handle_by_index %p %d\n",object, indx););
+    VerilatedVpioVar* varop = VerilatedVpioVar::castp(object);
+    if (VL_LIKELY(varop)) {
+	if (varop->varp()->dims()<2) return 0;
+	if (VL_LIKELY(varop->varp()->array().lhs() >= varop->varp()->array().rhs())) {
+	    if (VL_UNLIKELY(indx > varop->varp()->array().lhs() || indx < varop->varp()->array().rhs())) return 0;
+	    return (new VerilatedVpioVarIndex(varop->varp(), varop->scopep(), indx,
+					      indx - varop->varp()->array().rhs()))
+		->castVpiHandle();
+	} else {
+	    if (VL_UNLIKELY(indx < varop->varp()->array().lhs() || indx > varop->varp()->array().rhs())) return 0;
+	    return (new VerilatedVpioVarIndex(varop->varp(), varop->scopep(), indx,
+					      indx - varop->varp()->array().lhs()))
+		->castVpiHandle();
+	}
+    } else {
+	_VL_VPI_UNIMP(); return 0;
+    }
+}
+
+// for traversing relationships
+
+vpiHandle vpi_handle(PLI_INT32 type, vpiHandle object) {
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_handle %d %p\n",type,object););
+    switch (type) {
+    case vpiLeftRange:  // FALLTHRU
+    case vpiRightRange: {
+	if (VerilatedVpioVar* vop = VerilatedVpioVar::castp(object)) {
+	    vluint32_t num = ((type==vpiLeftRange)
+			      ? vop->varp()->range().lhs()
+			      : vop->varp()->range().rhs());
+	    return (new VerilatedVpioConst(num))->castVpiHandle();
+	} else if (VerilatedVpioRange* vop = VerilatedVpioRange::castp(object)) {
+	    vluint32_t num = ((type==vpiLeftRange)
+			      ? vop->lhs()
+			      : vop->rhs());
+	    return (new VerilatedVpioConst(num))->castVpiHandle();
+	} else {
+	    return 0;
+	}
+    }
+    default:
+	_VL_VPI_UNIMP();
+	return 0;
+    }
+}
+
+//-vpiHandle vpi_handle_multi(PLI_INT32 type, vpiHandle refHandle1, vpiHandle refHandle2, ... ) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+
+vpiHandle vpi_iterate(PLI_INT32 type, vpiHandle object) {
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_iterate %d %p\n",type,object););
+    switch (type) {
+    case vpiMemoryWord: {
+	VerilatedVpioVar* vop = VerilatedVpioVar::castp(object);
+	if (VL_UNLIKELY(!vop)) return 0;
+	if (vop->varp()->dims() < 2) return 0;
+	// Unsupported is multidim list
+	return ((new VerilatedVpioRange(vop->varp()->array().lhs(),
+					vop->varp()->array().rhs()))
+		->castVpiHandle());
+    }
+    case vpiReg: {
+	VerilatedVpioScope* vop = VerilatedVpioScope::castp(object);
+	if (VL_UNLIKELY(!vop)) return 0;
+	return ((new VerilatedVpioVarIter(vop->scopep()))
+		->castVpiHandle());
+    }
+    case vpiIODecl: // Skipping - we'll put under reg
+    case vpiNet: // Skipping - we'll put under reg
+	return 0;
+    default:
+	_VL_VPI_UNIMP(); return 0;
+    }
+}
+vpiHandle vpi_scan(vpiHandle object) {
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_scan %p\n",object););
+    VerilatedVpio* vop = VerilatedVpio::castp(object);
+    if (VL_UNLIKELY(!vop)) return NULL;
+    return vop->dovpi_scan();
+}
+
+// for processing properties
+
+PLI_INT32 vpi_get(PLI_INT32 property, vpiHandle object) {
+    // Leave this in the header file - in many cases the compiler can constant propagate "object"
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_get %d %p\n",property,object););
+    switch (property) {
+    case vpiTimePrecision: {
+	return VL_TIME_PRECISION;
+    }
+    case vpiType: {
+	VerilatedVpioVar* vop = VerilatedVpioVar::castp(object);
+	if (VL_UNLIKELY(!vop)) return 0;
+	return ((vop->varp()->dims()>1) ? vpiMemory : vpiReg);
+    }
+    case vpiDirection: {
+	// By forthought, the directions already are vpi enumerated
+	VerilatedVpioVar* vop = VerilatedVpioVar::castp(object);
+	if (VL_UNLIKELY(!vop)) return 0;
+	return vop->varp()->vldir();
+    }
+    case vpiVector: {
+	VerilatedVpioVar* vop = VerilatedVpioVar::castp(object);
+	if (VL_UNLIKELY(!vop)) return 0;
+	if (vop->varp()->dims()==0) return 0;
+	else return 1;
+    }
+    default:
+	_VL_VPI_UNIMP();
+	return 0;
+    }
+}
+
+//-PLI_INT64 vpi_get64(PLI_INT32 property, vpiHandle object) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+
+PLI_BYTE8 *vpi_get_str(PLI_INT32 property, vpiHandle object) {
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_get_str %d %p\n",property,object););
+    VerilatedVpio* vop = VerilatedVpio::castp(object);
+    if (VL_UNLIKELY(!vop)) return NULL;
+    switch (property) {
+    case vpiName: {
+	return (PLI_BYTE8*)vop->name();
+    }
+    case vpiFullName: {
+	return (PLI_BYTE8*)vop->fullname();
+    }
+    case vpiDefName: {
+	return (PLI_BYTE8*)vop->defname();
+    }
+    default:
+	_VL_VPI_UNIMP();
+	return 0;
+    }
+}
+
+// delay processing
+
+//-void vpi_get_delays(vpiHandle object, p_vpi_delay delay_p) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+//-void vpi_put_delays(vpiHandle object, p_vpi_delay delay_p) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+
+// value processing
+
+void vpi_get_value(vpiHandle object, p_vpi_value value_p) {
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_get_value %p\n",object););
+    if (VL_UNLIKELY(!value_p)) return;
+    if (VerilatedVpioVar* vop = VerilatedVpioVar::castp(object)) {
+	// We presume vpiValue.format = vpiIntVal or if single bit vpiScalarVal
+	if (value_p->format == vpiVectorVal) {
+	    // Vector pointer must come from our memory pool
+	    // It only needs to persist until the next vpi_get_value
+	    static VL_THREAD t_vpi_vecval out[VL_MULS_MAX_WORDS*2];
+	    value_p->value.vector = out;
+	    switch (vop->varp()->vltype()) {
+	    case VLVT_UINT8:
+		out[0].aval = *((CData*)(vop->varDatap()));
+		out[0].bval = 0;
+		return;
+	    case VLVT_UINT16:
+		out[0].aval = *((SData*)(vop->varDatap()));
+		out[0].bval = 0;
+		return;
+	    case VLVT_UINT32:
+		out[0].aval = *((IData*)(vop->varDatap()));
+		out[0].bval = 0;
+		return;
+	    case VLVT_WDATA: {
+		int words = VL_WORDS_I(vop->varp()->range().bits());
+		if (VL_UNLIKELY(words >= VL_MULS_MAX_WORDS)) {
+		    vl_fatal(__FILE__,__LINE__,"", "vpi_get_value with more than VL_MULS_MAX_WORDS; increase and recompile");
+		}
+		WDataInP datap = ((IData*)(vop->varDatap()));
+		for (int i=0; i<words; i++) {
+		    out[i].aval = datap[i];
+		    out[i].bval = 0;
+		}
+		return;
+	    }
+	    case VLVT_UINT64: {
+		QData data = *((QData*)(vop->varDatap()));
+		out[1].aval = (IData)(data>>VL_ULL(32));
+		out[1].bval = 0;
+		out[0].aval = (IData)(data);
+		out[0].bval = 0;
+		return;
+	    }
+	    default: {
+		_VL_VPI_UNIMP();
+		return;
+	    }
+	    }
+	} else {
+	    switch (vop->varp()->vltype()) {
+	    case VLVT_UINT8:
+		value_p->value.integer = *((CData*)(vop->varDatap()));
+		return;
+	    case VLVT_UINT16:
+		value_p->value.integer = *((SData*)(vop->varDatap()));
+		return;
+	    case VLVT_UINT32:
+		value_p->value.integer = *((IData*)(vop->varDatap()));
+		return;
+	    case VLVT_WDATA:
+	    case VLVT_UINT64:
+		// Not legal
+		value_p->value.integer = 0;
+	    default:
+		_VL_VPI_UNIMP();
+		return;
+	    }
+	}
+    }
+    else if (VerilatedVpioConst* vop = VerilatedVpioConst::castp(object)) {
+	value_p->value.integer = vop->num();
+	return;
+    }
+    _VL_VPI_UNIMP();
+}
+
+vpiHandle vpi_put_value(vpiHandle object, p_vpi_value value_p,
+			p_vpi_time time_p, PLI_INT32 flags) {
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_put_value %p %p\n",object, value_p););
+    if (VL_UNLIKELY(!value_p)) return 0;
+    if (VerilatedVpioVar* vop = VerilatedVpioVar::castp(object)) {
+	// We presume vpiValue.format = vpiIntVal or if single bit vpiScalarVal
+	VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:    vpi_put_value name=%s fmt=%d vali=%d\n",
+				  vop->fullname(), value_p->format, value_p->value.integer);
+			VL_PRINTF("-vltVpi:    varp=%p  putatp=%p\n",
+				  vop->varp()->datap(), vop->varDatap()););
+	if (VL_UNLIKELY(!vop->varp()->isPublicRW())) {
+	    VL_PRINTF("%%Warning: Ignoring vpi_put_value to signal marked read-only, use public_flat_rw instead: %s\n",
+		      vop->fullname());
+	    return 0;
+	}
+	if (value_p->format == vpiVectorVal) {
+	    if (VL_UNLIKELY(!value_p->value.vector)) return NULL;
+	    switch (vop->varp()->vltype()) {
+	    case VLVT_UINT8:
+		*((CData*)(vop->varDatap())) = value_p->value.vector[0].aval;
+		return object;
+	    case VLVT_UINT16:
+		*((SData*)(vop->varDatap())) = value_p->value.vector[0].aval;
+		return object;
+	    case VLVT_UINT32:
+		*((IData*)(vop->varDatap())) = value_p->value.vector[0].aval;
+		return object;
+	    case VLVT_WDATA: {
+		int words = VL_WORDS_I(vop->varp()->range().bits());
+		WDataOutP datap = ((IData*)(vop->varDatap()));
+		for (int i=0; i<words; i++) {
+		    datap[i] = value_p->value.vector[i].aval;
+		}
+		return object;
+	    }
+	    case VLVT_UINT64: {
+		*((QData*)(vop->varDatap())) = _VL_SET_QII(
+		    value_p->value.vector[1].aval,
+		    value_p->value.vector[0].aval);
+		return object;
+	    }
+	    default: {
+		_VL_VPI_UNIMP();
+		return NULL;
+	    }
+	    }
+	} else {
+	    switch (vop->varp()->vltype()) {
+	    case VLVT_UINT8:
+		*((CData*)(vop->varDatap())) = vop->mask() & value_p->value.integer;
+		return object;
+	    case VLVT_UINT16:
+		*((SData*)(vop->varDatap())) = vop->mask() & value_p->value.integer;
+		return object;
+	    case VLVT_UINT32:
+		*((IData*)(vop->varDatap())) = vop->mask() & value_p->value.integer;
+		return object;
+	    case VLVT_WDATA: // FALLTHRU
+	    case VLVT_UINT64: // FALLTHRU
+	    default:
+		_VL_VPI_UNIMP();
+		return 0;
+	    }
+	}
+    }
+    _VL_VPI_UNIMP(); return NULL;
+}
+
+//-void vpi_get_value_array(vpiHandle object, p_vpi_arrayvalue arrayvalue_p,
+//-			 PLI_INT32 *index_p, PLI_UINT32 num) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+//-void vpi_put_value_array(vpiHandle object, p_vpi_arrayvalue arrayvalue_p,
+//-			 PLI_INT32 *index_p, PLI_UINT32 num) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+
+
+// time processing
+
+//-void vpi_get_time(vpiHandle object, p_vpi_time time_p) {
+//-    _VL_VPI_UNIMP();
+//-}
+
+// I/O routines
+
+PLI_UINT32 vpi_mcd_open(PLI_BYTE8 *filenamep) {
+    return VL_FOPEN_S(filenamep,"wb");
+}
+
+PLI_UINT32 vpi_mcd_close(PLI_UINT32 mcd) {
+    VL_FCLOSE_I(mcd); return 0;
+}
+
+//-PLI_BYTE8 *vpi_mcd_name(PLI_UINT32 mcd) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+
+PLI_INT32 vpi_mcd_printf(PLI_UINT32 mcd, PLI_BYTE8 *formatp, ...) {
+    va_list ap;
+    va_start(ap,formatp);
+    int chars = vpi_mcd_vprintf(mcd, formatp, ap);
+    va_end(ap);
+    return chars;
+}
+
+PLI_INT32 vpi_printf(PLI_BYTE8 *formatp, ...) {
+    va_list ap;
+    va_start(ap,formatp);
+    int chars = vpi_vprintf(formatp, ap);
+    va_end(ap);
+    return chars;
+}
+
+PLI_INT32 vpi_vprintf(PLI_BYTE8* formatp, va_list ap) {
+    return VL_VPRINTF(formatp, ap);
+}
+
+PLI_INT32 vpi_mcd_vprintf(PLI_UINT32 mcd, PLI_BYTE8 *format, va_list ap) {
+    FILE* fp = VL_CVT_I_FP(mcd);
+    if (VL_UNLIKELY(!fp)) return 0;
+    int chars = vfprintf(fp, format, ap);
+    return chars;
+}
+
+PLI_INT32 vpi_flush(void) {
+    Verilated::flushCall();
+    return 0;
+}
+
+PLI_INT32 vpi_mcd_flush(PLI_UINT32 mcd) {
+    FILE* fp = VL_CVT_I_FP(mcd);
+    if (VL_UNLIKELY(!fp)) return 1;
+    fflush(fp);
+    return 0;
+}
+
+// utility routines
+
+//-PLI_INT32 vpi_compare_objects(vpiHandle object1, vpiHandle object2) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+//-PLI_INT32 vpi_chk_error(p_vpi_error_info error_info_p) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+
+PLI_INT32 vpi_free_object(vpiHandle object) {
+    return vpi_release_handle(object);  // Deprecated
+}
+
+PLI_INT32 vpi_release_handle (vpiHandle object) {
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_release_handle %p\n",object););
+    VerilatedVpio* vop = VerilatedVpio::castp(object);
+    if (VL_UNLIKELY(!vop)) return 0;
+    vpi_remove_cb(object);  // May not be a callback, but that's ok
+    delete vop;
+    return 1;
+}
+
+//-PLI_INT32 vpi_get_vlog_info(p_vpi_vlog_info vlog_info_p) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+
+// routines added with 1364-2001
+
+//-PLI_INT32 vpi_get_data(PLI_INT32 id, PLI_BYTE8 *dataLoc, PLI_INT32 numOfBytes) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+//-PLI_INT32 vpi_put_data(PLI_INT32 id, PLI_BYTE8 *dataLoc, PLI_INT32 numOfBytes) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+//-void *vpi_get_userdata(vpiHandle obj) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+//-PLI_INT32 vpi_put_userdata(vpiHandle obj, void *userdata) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+
+PLI_INT32 vpi_control(PLI_INT32 operation, ...) {
+    VL_DEBUG_IF_PLI(VL_PRINTF("-vltVpi:  vpi_control %d\n",operation););
+    switch (operation) {
+    case vpiFinish: {
+	vl_finish(__FILE__,__LINE__,"*VPI*");
+	return 1;
+    }
+    case vpiStop: {
+	vl_stop(__FILE__,__LINE__,"*VPI*");
+	return 1;
+    }
+    }
+    _VL_VPI_UNIMP(); return 0;
+}
+
+//-vpiHandle vpi_handle_by_multi_index(vpiHandle obj, PLI_INT32 num_index, PLI_INT32 *index_array) {
+//-    _VL_VPI_UNIMP(); return 0;
+//-}
+
+//======================================================================
+
+#endif // Guard

include/verilatedos.h

@@ -1,7 +1,7 @@
 // -*- C++ -*-
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License.
 // Version 2.0.
@@ -221,6 +221,18 @@ typedef unsigned long long	vluint64_t;	///< 64-bit unsigned type
 #define VL_BITBIT_I(bit)	((bit)&VL_SIZEBITS_I)	///< Bit number for a bit in a long
 #define VL_BITBIT_Q(bit)	((bit)&VL_SIZEBITS_Q)	///< Bit number for a bit in a quad
 
+//=========================================================================
+// Floating point
+// #defines, to avoid requiring math.h on all compile runs
+
+#ifdef _MSC_VER
+# define VL_TRUNC(n) (((n)<0) ? ceil((n))     : floor((n)))
+# define VL_ROUND(n) (((n)<0) ? ceil((n)-0.5) : floor((n)+0.5))
+#else
+# define VL_TRUNC(n) trunc(n)
+# define VL_ROUND(n) round(n)
+#endif
+
 //=========================================================================
 
 #endif /*guard*/

internals.pod

@@ -207,10 +207,10 @@ viewers let us know; ZGRViewer isn't great for large graphs.
 Tree files are dumps of the AST Tree and are produced between every major
 algorithmic stage.  An example:
 
-     NETLIST 0x90fb00 <e1> {0} w0
+     NETLIST 0x90fb00 <e1> {a0} w0
-    1: MODULE 0x912b20 <e8822> {8} w0  top  L2 [P]
+    1: MODULE 0x912b20 <e8822> {a8} w0  top  L2 [P]
-   *1:2: VAR 0x91a780 <e74#> {22} w70  out_wide [O] WIRE
+   *1:2: VAR 0x91a780 <e74#> {a22} w70  out_wide [O] WIRE
-    1:2:1: BASICDTYPE 0x91a3c0 <e73> {22} w70  [logic]
+    1:2:1: BASICDTYPE 0x91a3c0 <e73> {a22} w70  [logic]
 
 =over 4
 
@@ -224,7 +224,8 @@ algorithmic stage.  An example:
 this node.  A trailing # indicates this node changed since the last tree
 dump was made.  You can gdb break on this edit; see below.
 
-"{22}" indicates this node is related to line 22 in the source.
+"{a22}" indicates this node is related to line 22 in the source filename
+"a", where "a" is the first file read, "z" the 36th, and "aa" the 37th.
 
 "w70" indicates the width is 70 bits.  sw70 would be signed 70 bits.
 
@@ -250,7 +251,7 @@ what made a <e####> line in the tree dumps):
 
 The latest version is available from L<http://www.veripool.org/>.
 
-Copyright 2008-2010 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2008-2011 by Wilson Snyder.  Verilator is free software; you can
 redistribute it and/or modify it under the terms of either the GNU Lesser
 General Public License Version 3 or the Perl Artistic License Version 2.0.
 

nodist/bisondiff

@@ -1,7 +1,7 @@
 #!/usr/bin/perl -w
 ######################################################################
 #
-# Copyright 2007-2010 by Wilson Snyder.  This package is free software; you
+# Copyright 2007-2011 by Wilson Snyder.  This package is free software; you
 # can redistribute it and/or modify it under the terms of either the GNU
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.

nodist/bisonreader

@@ -1,7 +1,7 @@
 #!/usr/bin/perl -w
 ######################################################################
 #
-# Copyright 2007-2010 by Wilson Snyder.  This package is free software; you
+# Copyright 2007-2011 by Wilson Snyder.  This package is free software; you
 # can redistribute it and/or modify it under the terms of either the GNU
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.

nodist/dot_importer

@@ -38,7 +38,7 @@ cwrite ("graph_export.cpp");
 #----------------------------------------------------------------------
 
 sub usage {
-    pod2usage(-verbose=>2, -exitval => 2);
+    pod2usage(-verbose=>2, -exitval=>2, -output=>\*STDOUT);
     exit (1);
 }
 
@@ -143,7 +143,7 @@ Displays this message and program version and exits.
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2010 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2005-2011 by Wilson Snyder.  Verilator is free software; you can
 redistribute it and/or modify it under the terms of either the GNU Lesser
 General Public License Version 3 or the Perl Artistic License Version 2.0.
 

nodist/dot_pruner

@@ -43,7 +43,7 @@ dotwrite();
 #----------------------------------------------------------------------
 
 sub usage {
-    pod2usage(-verbose=>2, -exitval => 2);
+    pod2usage(-verbose=>2, -exitval=>2, -output=>\*STDOUT);
     exit (1);
 }
 
@@ -184,7 +184,7 @@ Displays this message and program version and exits.
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2010 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2005-2011 by Wilson Snyder.  Verilator is free software; you can
 redistribute it and/or modify it under the terms of either the GNU Lesser
 General Public License Version 3 or the Perl Artistic License Version 2.0.
 

nodist/flexdiff

@@ -1,7 +1,7 @@
 #!/usr/bin/perl -w
 ######################################################################
 #
-# Copyright 2007-2010 by Wilson Snyder.  This package is free software; you
+# Copyright 2007-2011 by Wilson Snyder.  This package is free software; you
 # can redistribute it and/or modify it under the terms of either the GNU
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.

nodist/install_test

@@ -12,12 +12,15 @@ use vars qw ($Debug);
 #======================================================================
 # main
 
+our $Opt_Stage = 0;
+
 autoflush STDOUT 1;
 autoflush STDERR 1;
 Getopt::Long::config ("no_auto_abbrev");
 if (! GetOptions (
 	  "debug"	=> sub { $Debug = 1; },
 	  "<>"		=> sub { die "%Error: Unknown parameter: $_[0]\n"; },
+	  "stage=i"	=> \$Opt_Stage,
     )) {
     die "%Error: Bad usage, try 'install_test --help'\n";
 }
@@ -37,8 +40,10 @@ sub test {
     my $srcdir = getcwd();
     my $blddir  = $srcdir."/test_regress/obj_dir/install_test_bld";
     my $prefix  = $srcdir."/test_regress/obj_dir/install_test_prefix";
-    my $testdir = $srcdir."/test_regress/obj_dir/install_test_test";
+    my $testdirp= $srcdir."/test_regress/obj_dir/install_test_testp";
-    if (1) {
+    my $testdirn= $srcdir."/test_regress/obj_dir/install_test_testn";
+
+    if ($Opt_Stage <= 0) {
 	run("/bin/rm -rf $blddir");
 	run("/bin/mkdir -p $blddir");
 	run("cd $blddir && $srcdir/configure --prefix $prefix");
@@ -46,24 +51,63 @@ sub test {
     }
 
     # Install it under the prefix
-    if (1) {
+    if ($Opt_Stage <= 1) {
 	run("/bin/rm -rf $prefix");
 	run("/bin/mkdir -p $prefix");
 	run("cd $blddir && make install");
+	run("test -e $prefix/share/man/man1/verilator.1");
+	run("test -e $prefix/share/verilator/examples/test_c/Makefile");
+	run("test -e $prefix/share/verilator/include/verilated.h");
+	run("test -e $prefix/bin/verilator");
+	run("test -e $prefix/bin/verilator_bin");
+	run("test -e $prefix/bin/verilator_bin_dbg");
+	run("test -e $prefix/bin/verilator_profcfunc");
     }
 
     # Run a test using just the path
-    if (1) {
+    if ($Opt_Stage <= 2) {
-	run("/bin/rm -rf   $testdir");
+	my $dir = $testdirp;
-	run("/bin/mkdir -p $testdir");
+	run("/bin/rm -rf   $dir");
+	run("/bin/mkdir -p $dir");
 	my $bin1 = $prefix."/bin";
 	my $bin2 = $prefix."/share/bin";
-	IO::File->new(">$testdir/foo.v")->print('module t; initial begin $display("HELLO WORLD"); end endmodule'."\n");
+	write_verilog($dir);
-	run("cd $testdir && PATH=$bin1:$bin2:\$PATH verilator --cc foo.v");
+	run("cd $dir && PATH=$bin1:$bin2:\$PATH verilator --cc foo.v --exe foo.cpp");
-	run("cd $testdir/obj_dir && PATH=$bin1:$bin2:\$PATH make -f Vfoo.mk");
+	run("cd $dir/obj_dir && PATH=$bin1:$bin2:\$PATH make -f Vfoo.mk");
-	#Need .c file, and --exe for this to work
+	run("cd $dir && PATH=$bin1:$bin2:\$PATH obj_dir/Vfoo");
-	#run("cd $testdir && PATH=$bin1:$bin2:\$PATH obj_dir/Vfoo");
     }
+
+    # Run a test using exact path to binary
+    if ($Opt_Stage <= 3) {
+	my $dir = $testdirn;
+	run("/bin/rm -rf   $dir");
+	run("/bin/mkdir -p $dir");
+	write_verilog($dir);
+	my $bin1 = $prefix."/bin";
+	my $bin2 = $prefix."/share/bin";
+	run("cd $dir && $bin1/verilator --cc foo.v --exe foo.cpp");
+	run("cd $dir/obj_dir && make -f Vfoo.mk");
+	run("cd $dir/obj_dir && ./Vfoo");
+    }
+}
+
+sub write_verilog {
+    my $dir = shift;
+    IO::File->new(">$dir/foo.v")->print('module t; initial begin $display("HELLO WORLD"); $finish; end endmodule'."\n");
+    my $fh = IO::File->new(">$dir/foo.cpp");
+    $fh->print('#include "Vfoo.h"'		,"\n");
+    $fh->print('unsigned int main_time = 0;'	,"\n");
+    $fh->print('double sc_time_stamp () {'	,"\n");
+    $fh->print('    return main_time;'		,"\n");
+    $fh->print('}'				,"\n");
+    $fh->print('int main() {'			,"\n");
+    $fh->print('    Vfoo *top = new Vfoo;'	,"\n");
+    $fh->print('    while (!Verilated::gotFinish()) {',"\n");
+    $fh->print('	top->eval();'		,"\n");
+    $fh->print('	main_time++;'		,"\n");
+    $fh->print('    }'				,"\n");
+    $fh->print('    top->final();'		,"\n");
+    $fh->print('}'				,"\n");
 }
 
 sub cleanenv {
@@ -117,7 +161,7 @@ Displays this message and program version and exits.
 
 =head1 DISTRIBUTION
 
-Copyright 2009-2010 by Wilson Snyder.  This package is free software; you
+Copyright 2009-2011 by Wilson Snyder.  This package is free software; you
 can redistribute it and/or modify it under the terms of either the GNU
 Lesser General Public License Version 3 or the Perl Artistic License
 Version 2.0.

nodist/invoke_atsim

@@ -8,21 +8,9 @@ use strict;
 #======================================================================
 # main
 
-delete $ENV{MODULE_VERSION};
+eval `modulecmd perl add axiom-athdl`;
-_setup_modules();
-module('add','axiom-athdl');
 exec('atsim',@ARGV);
 
-#######################################################################
-# Modules package
-
-sub _setup_modules {
-    # Load the 'module' command into the environment
-    my $init = "$ENV{MODULESHOME}/init/perl";
-    (-f $init) or die "%Error: Script not found: $init,";
-    require $init;
-}
-
 #######################################################################
 __END__
 
@@ -40,7 +28,7 @@ invoke_atsim - Invoke tool under "modules" command
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2010 by Wilson Snyder.  This package is free software; you
+Copyright 2005-2011 by Wilson Snyder.  This package is free software; you
 can redistribute it and/or modify it under the terms of either the GNU
 Lesser General Public License Version 3 or the Perl Artistic License
 Version 2.0.

nodist/invoke_iccr

@@ -8,21 +8,9 @@ use strict;
 #======================================================================
 # main
 
-delete $ENV{MODULE_VERSION};
+eval `modulecmd perl add cds-ius`;
-_setup_modules();
-module('add','cadence-ius');
 exec('iccr',@ARGV);
 
-#######################################################################
-# Modules package
-
-sub _setup_modules {
-    # Load the 'module' command into the environment
-    my $init = "$ENV{MODULESHOME}/init/perl";
-    (-f $init) or die "%Error: Script not found: $init,";
-    require $init;
-}
-
 #######################################################################
 __END__
 
@@ -40,7 +28,7 @@ invoke_iccr - Invoke tool under "modules" command
 
 =head1 DISTRIBUTION
 
-Copyright 2007-2010 by Wilson Snyder.  This package is free software; you
+Copyright 2007-2011 by Wilson Snyder.  This package is free software; you
 can redistribute it and/or modify it under the terms of either the GNU
 Lesser General Public License Version 3 or the Perl Artistic License
 Version 2.0.

nodist/invoke_ncverilog

@@ -8,21 +8,9 @@ use strict;
 #======================================================================
 # main
 
-delete $ENV{MODULE_VERSION};
+eval `modulecmd perl add cds-ius`;
-_setup_modules();
-module('add','cadence-ius');
 exec('ncverilog',@ARGV);
 
-#######################################################################
-# Modules package
-
-sub _setup_modules {
-    # Load the 'module' command into the environment
-    my $init = "$ENV{MODULESHOME}/init/perl";
-    (-f $init) or die "%Error: Script not found: $init,";
-    require $init;
-}
-
 #######################################################################
 __END__
 
@@ -40,7 +28,7 @@ invoke_ncverilog - Invoke tool under "modules" command
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2010 by Wilson Snyder.  This package is free software; you
+Copyright 2005-2011 by Wilson Snyder.  This package is free software; you
 can redistribute it and/or modify it under the terms of either the GNU
 Lesser General Public License Version 3 or the Perl Artistic License
 Version 2.0.

nodist/invoke_vcs

@@ -8,21 +8,9 @@ use strict;
 #======================================================================
 # main
 
-delete $ENV{MODULE_VERSION};
+eval `modulecmd perl add synopsys-vcs`;
-_setup_modules();
-module('add','synopsys-vcs');
 exec('vcs',@ARGV);
 
-#######################################################################
-# Modules package
-
-sub _setup_modules {
-    # Load the 'module' command into the environment
-    my $init = "$ENV{MODULESHOME}/init/perl";
-    (-f $init) or die "%Error: Script not found: $init,";
-    require $init;
-}
-
 #######################################################################
 __END__
 
@@ -40,7 +28,7 @@ invoke_vcs - Invoke tool under "modules" command
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2010 by Wilson Snyder.  This package is free software; you
+Copyright 2005-2011 by Wilson Snyder.  This package is free software; you
 can redistribute it and/or modify it under the terms of either the GNU
 Lesser General Public License Version 3 or the Perl Artistic License
 Version 2.0.

nodist/spdiff

@@ -1,7 +1,7 @@
 #!/usr/bin/perl -w
 ######################################################################
 #
-# Copyright 2010-2010 by Wilson Snyder.  This package is free software; you
+# Copyright 2010-2011 by Wilson Snyder.  This package is free software; you
 # can redistribute it and/or modify it under the terms of either the GNU
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
@@ -81,6 +81,7 @@ sub prep {
 	$line =~ s/SP_NOTICE.*// if $sp;
 	$line =~ s/vl_fatal.*// if !$sp;
 	$line =~ s/VL_PRINT.*// if !$sp;
+	$line =~ s/Copyright \d+-\d+/Copyright #-#/g;
 
 	push @wf, $line;
 

nodist/vtree_importer

@@ -40,7 +40,7 @@ print '(query-replace-regexp "(\\([0-9a-z_]+\\))" "\\1" nil nil nil)',"\n";
 #----------------------------------------------------------------------
 
 sub usage {
-    pod2usage(-verbose=>2, -exitval => 2);
+    pod2usage(-verbose=>2, -exitval=>2, -output=>\*STDOUT);
     exit (1);
 }
 
@@ -256,7 +256,7 @@ sub gentree {
   'TRACE'	=> sub { p "TRACE what{";p1;p ",";p2;p ",";p3;p ",";p4;p ",";p5;p "}";nl; },
   'UCFUNC'	=> sub { p '$c(';p1;p ",";p2;p ",";p3;p ",";p4;p ",";p5;p ")"; },
   'UCSTMT'	=> sub { p '$c(';p1;p ",";p2;p ",";p3;p ",";p4;p ",";p5;p ");";nl; },
-  'UNARYMIN'	=> sub { p " -";p1; },
+  'NEGATE'	=> sub { p " -";p1; },
   'VAR'		=> sub { p_var(); },
   'VARPIN'	=> sub { p "VARPIN what{";p1;p ",";p2;p ",";p3;p ",";p4;p ",";p5;p "}";nl; },
   'VARREF'	=> sub { a1; },
@@ -331,7 +331,7 @@ Displays this message and program version and exits.
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2010 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2005-2011 by Wilson Snyder.  Verilator is free software; you can
 redistribute it and/or modify it under the terms of either the GNU Lesser
 General Public License Version 3 or the Perl Artistic License Version 2.0.
 

readme.pod

@@ -9,7 +9,7 @@ This is the Verilator Package README file.
 
 =head1 DISTRIBUTION
 
-This package is Copyright 2003-2010 by Wilson Snyder.  (Report bugs to
+This package is Copyright 2003-2011 by Wilson Snyder.  (Report bugs to
 L<http://www.veripool.org/>.)
 
 Verilator is free software; you can redistribute it and/or modify it under
@@ -91,12 +91,24 @@ headers.
 
 =item
 
+You will need the C<flex> and C<bison> packages installed.
+
+=item
+
 C<cd> to the Verilator directory containing this README.
 
 =item
 
 You now have to decide how you're going to eventually install the kit.
 
+Note Verilator builds the current value of VERILATOR_ROOT, SYSTEMC,
+SYSTEMC_ARCH, SYSTEMPERL, and SYSTEMPERL_INCLUDE as defaults into the
+executable, so try to have them correct before configuring.
+
+=over 4
+
+=item 1.
+
 Our personal favorite is to always run Verilator from the kit directory.
 This allows the easiest experimentation and upgrading.  It's also how most
 EDA tools operate; to run any of them you point to the tarball.
@@ -105,12 +117,33 @@ EDA tools operate; to run any of them you point to the tarball.
     setenv VERILATOR_ROOT `pwd`   # if your shell is csh
     ./configure
 
+=item 2.
+
+To install globally onto a "cad" disk with multiple versions of every tool,
+and add it to path using Modules/modulecmd:
+
+    unset VERILATOR_ROOT      # if your shell is bash
+    unsetenv VERILATOR_ROOT   # if your shell is csh
+    # For the tarball, use the version number instead of git describe
+    ./configure --prefix /CAD_DISK/verilator/`git describe | sed "s/verilator_//"`
+
+    After installing you'll want a module file like the following:
+
+    set install_root /CAD_DISK/verilator/{version-number-used-above}
+    setenv VERILATOR_ROOT $install_root
+    prepend-path PATH $install_root/bin
+    prepend-path MANPATH $install_root/man
+
+=item 3.
+
 The next option is to install it globally, using the normal system paths:
 
     unset VERILATOR_ROOT      # if your shell is bash
     unsetenv VERILATOR_ROOT   # if your shell is csh
     ./configure
 
+=item 4.
+
 Alternatively you can configure a prefix that install will populate, as
 most GNU tools support:
 
@@ -118,9 +151,10 @@ most GNU tools support:
     unsetenv VERILATOR_ROOT   # if your shell is csh
     ./configure --prefix /opt/verilator-VERSION
 
-Note Verilator builds the current value of VERILATOR_ROOT, SYSTEMC,
+Then after installing you will need to add /opt/verilator-VERSION/bin to
-SYSTEMC_ARCH, SYSTEMPERL, and SYSTEMPERL_INCLUDE as defaults into the
+PATH.
-executable, so try to have them correct before configuring.
+
+=back
 
 =item
 

readme.texi

@@ -26,7 +26,7 @@ This is the Verilator Package.
 @node Copyright, Description, Top, Top
 @section Copyright
 
-This package is Copyright 2003-2010 by Wilson Snyder @email{wsnyder@@wsnyder.org}.
+This package is Copyright 2003-2011 by Wilson Snyder @email{wsnyder@@wsnyder.org}.
 
 Verilator is free software; you can redistribute it and/or modify it
 under the terms of either the GNU Lesser General Public License

src/Makefile.in

@@ -7,7 +7,7 @@
 #
 #*****************************************************************************
 #
-# Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+# Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 # redistribute it and/or modify it under the terms of either the GNU
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
@@ -24,6 +24,7 @@
 srcdir = @srcdir@
 VPATH = @srcdir@
 PERL = @PERL@
+EXEEXT = @EXEEXT@
 
 #### End of system configuration section. ####
 
@@ -32,25 +33,11 @@ default: dbg opt
 debug: dbg
 optimize: opt
 
-ifeq ($(OBJCACHE_HOSTS),)
- ifneq ($(SLCHOOSED_HOST),)
-  ifeq ($(VERILATOR_AUTHOR_SITE),1)
-export OBJCACHE_HOSTS := $(shell rschedule --no-allow-reserved --similar hostnames)
-  endif
- endif
-endif
-
-ifeq ($(OBJCACHE_JOBS),)
-ifneq ($(OBJCACHE_HOSTS),)
-export OBJCACHE_JOBS := -j $(shell objcache --jobs "$(OBJCACHE_HOSTS)")
-endif
-endif
-
 ifneq ($(words $(CURDIR)),1)
  $(error Unsupported: GNU Make cannot build in directories containing spaces, build elsewhere: '$(CURDIR)')
 endif
 
-UNDER_GIT = $(wildcard ../.git/logs/HEAD)
+UNDER_GIT = $(wildcard ${srcdir}/../.git/logs/HEAD)
 
 #*********************************************************************
 
@@ -65,26 +52,25 @@ opt: ../verilator_bin
 ifeq ($(VERILATOR_NO_OPT_BUILD),1)	# Faster laptop development... One build
 ../verilator_bin: ../verilator_bin_dbg
 	-rm -rf $@ $@.exe
-	-cp -p $< $@
+	-cp -p $<$(EXEEXT) $@$(EXEEXT)
-	-cp -p $<.exe $@.exe
 else
 ../verilator_bin: obj_opt prefiles
-	cd obj_opt && $(MAKE) -j 1             TGT=../$@ -f ../Makefile_obj serial
+	cd obj_opt && $(MAKE) -j 1  TGT=../$@ -f ../Makefile_obj serial
-	cd obj_opt && $(MAKE) $(OBJCACHE_JOBS) TGT=../$@ -f ../Makefile_obj
+	cd obj_opt && $(MAKE)       TGT=../$@ -f ../Makefile_obj
 endif
 
 dbg: ../verilator_bin_dbg
 ../verilator_bin_dbg: obj_dbg prefiles
-	cd obj_dbg && $(MAKE) -j 1             TGT=../$@ VL_DEBUG=1 -f ../Makefile_obj serial
+	cd obj_dbg && $(MAKE) -j 1  TGT=../$@ VL_DEBUG=1 -f ../Makefile_obj serial
-	cd obj_dbg && $(MAKE) $(OBJCACHE_JOBS) TGT=../$@ VL_DEBUG=1 -f ../Makefile_obj
+	cd obj_dbg && $(MAKE)       TGT=../$@ VL_DEBUG=1 -f ../Makefile_obj
 
 prefiles::
 
 ifneq ($(UNDER_GIT),)	# If local git tree... Else don't burden users
 prefiles:: config_rev.h
-# This output goes into srcdir, as we need to distribute it as part of the kit.
+# This output goes into srcdir if locally configured, as we need to distribute it as part of the kit.
-config_rev.h:	config_rev.pl ../.git/logs/HEAD
+config_rev.h:	${srcdir}/config_rev.pl ${srcdir}/../.git/logs/HEAD
-	$(PERL) config_rev.pl . >$@
+	$(PERL) ${srcdir}/config_rev.pl ${srcdir} >$@
 endif
 
 maintainer-copy::
@@ -96,3 +82,6 @@ clean mostlyclean distclean maintainer-clean::
 
 distclean maintainer-clean::
 	-rm -f Makefile Makefile_obj config_build.h
+
+maintainer-clean::
+	-rm -f config_rev.h

src/Makefile_obj.in

@@ -7,7 +7,7 @@
 #
 #*****************************************************************************
 #
-# Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+# Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 # redistribute it and/or modify it under the terms of either the GNU
 # Lesser General Public License Version 3 or the Perl Artistic License
 # Version 2.0.
@@ -57,9 +57,11 @@ datarootdir = @datarootdir@
 pkgdatadir = @pkgdatadir@
 
 # Compile options
+CFG_WITH_CCWARN = @CFG_WITH_CCWARN@
 CFG_WITH_DEFENV = @CFG_WITH_DEFENV@
-CPPFLAGSNOWALL += @CPPFLAGS@
+CPPFLAGS += @CPPFLAGS@
 LDFLAGS += @LDFLAGS@
+EXEEXT = @EXEEXT@
 
 #### End of system configuration section. ####
 
@@ -85,17 +87,18 @@ endif
 # -lfl not needed as Flex invoked with %nowrap option
 LIBS = -lm
 
-CPPFLAGSNOWALL += -MMD
+CPPFLAGS += -MMD
-CPPFLAGSNOWALL += -I. -I$(bldsrc) -I$(srcdir) -I$(incdir)
+CPPFLAGS += -I. -I$(bldsrc) -I$(srcdir) -I$(incdir)
-CPPFLAGSNOWALL += -DYYDEBUG 	# Required to get nice error messages
+CPPFLAGS += -DYYDEBUG 	# Required to get nice error messages
-#CPPFLAGSNOWALL += -DVL_LEAK_CHECKS 	# If running valgrind or other hunting tool
+#CPPFLAGS += -DVL_LEAK_CHECKS 	# If running valgrind or other hunting tool
-CPPFLAGSNOWALL += $(COPT)
+CPPFLAGS += $(COPT)
-CPPFLAGS = $(CPPFLAGSNOWALL)
+CPPFLAGS += -MP # Only works on recent GCC versions
-ifeq ($(VERILATOR_AUTHOR_SITE),1)	# Local... Else don't burden users
+ifeq ($(CFG_WITH_CCWARN),yes)	# Local... Else don't burden users
-CPPFLAGSNOWALL += -MP	# Only works on recent GCC versions
 CPPFLAGS += -W -Wall -Wno-unused-parameter -Wno-char-subscripts -Werror
 #CPPFLAGS += -pedantic-errors
 endif
+CPPFLAGSWALL   = $(CPPFLAGS)
+CPPFLAGSNOWALL = $(CPPFLAGS) -Wno-unused
 
 ifneq ($(SYSTEMPERL),)	# Intuit SYSTEMPERL_INCLUDE as it's new
  SYSTEMPERL_INCLUDE ?= $(SYSTEMPERL)/src
@@ -209,7 +212,6 @@ RAW_OBJS = \
 	V3PreShell.o \
 	V3Premit.o \
 	V3Scope.o \
-	V3Signed.o \
 	V3Slice.o \
 	V3Split.o \
 	V3SplitAs.o \
@@ -221,6 +223,7 @@ RAW_OBJS = \
 	V3Trace.o \
 	V3TraceDecl.o \
 	V3Tristate.o \
+	V3Undriven.o \
 	V3Unknown.o \
 	V3Unroll.o \
 	V3Width.o \
@@ -250,8 +253,6 @@ $(TGT): V3Ast__gen_classes.h $(OBJS)
 	@echo "      Linking $@..."
 	-rm -rf $@ [email protected]
 	${LINK} ${LDFLAGS} -o $@ $(OBJS) $(CCMALLOC) ${LIBS}
-	@-(cp [email protected] $@ || true)
-# ok if cp failes on linux, it's there to insure executable works on NT
 
 V3Number_test: V3Number_test.o
 	${LINK} ${LDFLAGS} -o $@ $^ ${LIBS}
@@ -262,9 +263,9 @@ V3Number_test: V3Number_test.o
 	$(PERL) $(ASTGEN) -I$(srcdir) $*.cpp
 
 %.o:	%.cpp
-	$(OBJCACHE) ${CXX} ${CPPFLAGS} -c $<
+	$(OBJCACHE) ${CXX} ${CPPFLAGSWALL} -c $<
 %.o:	%.c
-	$(OBJCACHE) ${CC}  ${CPPFLAGS} -c $<
+	$(OBJCACHE) ${CC}  ${CPPFLAGSWALL} -c $<
 
 V3ParseLex.o:	V3ParseLex.cpp V3Lexer.yy.cpp V3ParseBison.c
 	$(OBJCACHE) ${CXX} ${CPPFLAGSNOWALL} -c $<

src/V3Active.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -148,7 +148,11 @@ public:
     }
 public:
     // CONSTUCTORS
-    ActiveNamer() {}
+    ActiveNamer() {
+	m_scopep = NULL;
+	m_iActivep = NULL;
+	m_cActivep = NULL;
+    }
     virtual ~ActiveNamer() {}
     void main(AstScope* nodep) {
 	nodep->accept(*this);
@@ -160,26 +164,58 @@ public:
 
 class ActiveDlyVisitor : public ActiveBaseVisitor {
 private:
+    bool 	m_combo;	// Combo logic
+    AstNode*	m_alwaysp;	// Always we're under
+    AstNode*	m_assignp;	// In assign
     // VISITORS
     virtual void visit(AstAssignDly* nodep, AstNUser*) {
-	// Convert to a non-delayed assignment
+	if (m_combo) {
-	UINFO(5,"    ASSIGNDLY "<<nodep<<endl);
+	    // Convert to a non-delayed assignment
-	nodep->v3warn(COMBDLY,"Delayed assignments (<=) in non-clocked (non flop or latch) blocks should be non-delayed assignments (=).");
+	    UINFO(5,"    ASSIGNDLY "<<nodep<<endl);
-	AstNode* newp = new AstAssign (nodep->fileline(),
+	    nodep->v3warn(COMBDLY,"Delayed assignments (<=) in non-clocked (non flop or latch) block; suggest blocking assignments (=).");
-				       nodep->lhsp()->unlinkFrBack(),
+	    AstNode* newp = new AstAssign (nodep->fileline(),
-				       nodep->rhsp()->unlinkFrBack());
+					   nodep->lhsp()->unlinkFrBack(),
-	nodep->replaceWith(newp);
+					   nodep->rhsp()->unlinkFrBack());
-	nodep->deleteTree(); nodep = NULL;
+	    nodep->replaceWith(newp);
+	    nodep->deleteTree(); nodep = NULL;
+	}
+    }
+    virtual void visit(AstAssign* nodep, AstNUser*) {
+	if (!m_combo) {
+	    AstNode* las = m_assignp;
+	    m_assignp = nodep;
+	    nodep->lhsp()->iterateAndNext(*this);
+	    m_assignp = las;
+	}
+    }
+    virtual void visit(AstVarRef* nodep, AstNUser*) {
+	AstVar* varp=nodep->varp();
+	if (!m_combo
+	    && m_assignp
+	    && !varp->isUsedLoopIdx() // Ignore loop indicies
+	    && !varp->isTemp()
+	    ) {
+	    // Allow turning off warnings on the always, or the variable also
+	    if (!m_alwaysp->fileline()->warnIsOff(V3ErrorCode::BLKSEQ)
+		&& !m_assignp->fileline()->warnIsOff(V3ErrorCode::BLKSEQ)
+		&& !varp->fileline()->warnIsOff(V3ErrorCode::BLKSEQ)
+		) {
+		m_alwaysp->fileline()->modifyWarnOff(V3ErrorCode::BLKSEQ, true);  // Complain just once for the entire always
+		varp->fileline()->modifyWarnOff(V3ErrorCode::BLKSEQ, true);
+		nodep->v3warn(BLKSEQ,"Blocking assignments (=) in sequential (flop or latch) block; suggest delayed assignments (<=).");
+	    }
+	}
     }
-    // Empty visitors, speed things up
-    virtual void visit(AstNodeMath* nodep, AstNUser*) {}
     //--------------------
     virtual void visit(AstNode* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
     }
 public:
     // CONSTUCTORS
-    ActiveDlyVisitor(AstNode* nodep) {
+    ActiveDlyVisitor(AstNode* nodep, bool combo) {
+	m_alwaysp = nodep;
+	m_combo = combo;
+	m_assignp = NULL;
 	nodep->accept(*this);
     }
     virtual ~ActiveDlyVisitor() {}
@@ -317,7 +353,10 @@ private:
 
 	// Warn and/or convert any delayed assignments
 	if (combo && !sequent) {
-	    ActiveDlyVisitor dlyvisitor (nodep);
+	    ActiveDlyVisitor dlyvisitor (nodep, true);
+	}
+	else if (!combo && sequent) {
+	    ActiveDlyVisitor dlyvisitor (nodep, false);
 	}
     }
     virtual void visit(AstAlways* nodep, AstNUser*) {

src/V3Active.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3ActiveTop.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3ActiveTop.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Assert.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2005-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2005-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -182,18 +182,18 @@ private:
 	    for (AstCaseItem* itemp = nodep->itemsp(); itemp; itemp=itemp->nextp()->castCaseItem()) {
 		if (itemp->isDefault()) has_default=true;
 	    }
-	    if (nodep->fullPragma()) {
+	    if (nodep->fullPragma() || nodep->priorityPragma()) {
 		// Simply need to add a default if there isn't one already
-		m_statAsFull++;
+		++m_statAsFull;
 		if (!has_default) {
 		    nodep->addItemsp(new AstCaseItem(nodep->fileline(), NULL/*DEFAULT*/,
 						     newFireAssert(nodep, "synthesis full_case, but non-match found")));
 		}
 	    }
-	    if (nodep->parallelPragma()) {
+	    if (nodep->parallelPragma() || nodep->uniquePragma() || nodep->unique0Pragma()) {
 		// Need to check that one, and only one of the case items match at any moment
 		// If there's a default, we allow none to match, else exactly one must match
-		m_statAsFull++;
+		++m_statAsFull;
 		if (!has_default && !nodep->itemsp()) {
 		    // Not parallel, but harmlessly so.
 		} else {
@@ -207,7 +207,8 @@ private:
 			    else propp = onep;
 			}
 		    }
-		    AstNode* ohot = (has_default
+		    bool allow_none = has_default || nodep->unique0Pragma();
+		    AstNode* ohot = (allow_none
 				     ? (new AstOneHot0(nodep->fileline(), propp))->castNode()
 				     : (new AstOneHot (nodep->fileline(), propp))->castNode());
 		    AstIf* ifp = new AstIf (nodep->fileline(),
@@ -240,18 +241,18 @@ private:
 	if (m_beginp && nodep->name() == "") nodep->name(m_beginp->name());
 	newPslAssertion(nodep, nodep->propp(), nodep->sentreep(),
 			nodep->stmtsp(), nodep->name()); nodep=NULL;
-	m_statAsCover++;
+	++m_statAsCover;
     }
     virtual void visit(AstPslAssert* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
 	newPslAssertion(nodep, nodep->propp(), nodep->sentreep(),
 			NULL, nodep->name()); nodep=NULL;
-	m_statAsPsl++;
+	++m_statAsPsl;
     }
     virtual void visit(AstVAssert* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
 	newVAssertion(nodep, nodep->propp()); nodep=NULL;
-	m_statAsSV++;
+	++m_statAsSV;
     }
 
     virtual void visit(AstNodeModule* nodep, AstNUser*) {

src/V3Assert.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2005-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2005-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3AssertPre.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2005-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2005-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3AssertPre.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2005-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2005-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Ast.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -74,7 +74,9 @@ void AstNode::init() {
     m_clonep = NULL;
     m_cloneCnt = 0;
     // Attributes
-    m_signed = false;
+    m_numeric = (int)AstNumeric::UNSIGNED;
+    m_didWidth = false;
+    m_doingWidth = false;
     m_width = 0;
     m_widthMin = 0;
     m_user1p = NULL;
@@ -192,6 +194,7 @@ string AstNode::prettyName(const string& namein) {
 	}
     }
     if (pretty.substr(0,4) == "TOP.") pretty.replace(0,4,"");
+    if (pretty.substr(0,5) == "TOP->") pretty.replace(0,5,"");
     return pretty;
 }
 
@@ -427,7 +430,7 @@ void AstNode::replaceWith(AstNode* newp) {
     repHandle.relink(newp);
 }
 
-void AstNRelinker::dump(ostream& str) {
+void AstNRelinker::dump(ostream& str) const {
     str<<" BK="<<(uint32_t*)m_backp;
     str<<" ITER="<<(uint32_t*)m_iterpp;
     str<<" CHG="<<(m_chg==RELINK_NEXT?"[NEXT] ":"");
@@ -872,7 +875,7 @@ bool AstNode::sameTreeIter(AstNode* node2p, bool ignNext) {
     if (this==NULL || node2p==NULL) return false;
     if (this->type() != node2p->type()
 	|| this->width() != node2p->width()
-	|| this->isSigned() != node2p->isSigned()
+	|| this->numeric() != node2p->numeric()
 	|| !this->same(node2p)) {
 	return false;
     }
@@ -944,7 +947,7 @@ void AstNode::checkTree() {
     }
 }
 
-void AstNode::dumpPtrs(ostream& os) {
+void AstNode::dumpPtrs(ostream& os) const {
     os<<"This="<<typeName()<<" "<<(void*)this;
     os<<" back="<<(void*)backp();
     if (nextp()) os<<" next="<<(void*)nextp();

src/V3Ast.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -27,6 +27,7 @@
 #include "V3Error.h"
 #include "V3Number.h"
 #include <vector>
+#include <cmath>
 
 #include "V3Ast__gen_classes.h"	// From ./astgen
 // Things like:
@@ -56,9 +57,40 @@ public:
 
 //######################################################################
 
+class AstNumeric {
+public:
+    enum en {
+	UNSIGNED,
+	SIGNED,
+	DOUBLE
+	// Limited to 2 bits, unless change V3Ast's packing function
+    };
+    enum en m_e;
+    const char* ascii() const {
+	static const char* names[] = {
+	    "UNSIGNED","SIGNED","DOUBLE"
+	};
+	return names[m_e];
+    };
+    inline AstNumeric () : m_e(UNSIGNED) {}
+    inline AstNumeric (en _e) : m_e(_e) {}
+    explicit inline AstNumeric (int _e) : m_e(static_cast<en>(_e)) {}
+    operator en () const { return m_e; }
+    inline bool isDouble() const { return m_e==DOUBLE; }
+    inline bool isSigned() const { return m_e==SIGNED; }
+    inline bool isUnsigned() const { return m_e==UNSIGNED; }
+  };
+  inline bool operator== (AstNumeric lhs, AstNumeric rhs) { return (lhs.m_e == rhs.m_e); }
+  inline bool operator== (AstNumeric lhs, AstNumeric::en rhs) { return (lhs.m_e == rhs); }
+  inline bool operator== (AstNumeric::en lhs, AstNumeric rhs) { return (lhs == rhs.m_e); }
+  inline ostream& operator<<(ostream& os, AstNumeric rhs) { return os<<rhs.ascii(); }
+
+//######################################################################
+
 class AstPragmaType {
 public:
     enum en {
+	ILLEGAL,
 	COVERAGE_BLOCK_OFF,
 	INLINE_MODULE,
 	NO_INLINE_MODULE,
@@ -67,7 +99,7 @@ public:
 	PUBLIC_TASK
     };
     enum en m_e;
-    inline AstPragmaType () {}
+    inline AstPragmaType () : m_e(ILLEGAL) {}
     inline AstPragmaType (en _e) : m_e(_e) {}
     explicit inline AstPragmaType (int _e) : m_e(static_cast<en>(_e)) {}
     operator en () const { return m_e; }
@@ -90,7 +122,7 @@ public:
 	TRACE_CHANGE_SUB
     };
     enum en m_e;
-    inline AstCFuncType () {}
+    inline AstCFuncType () : m_e(FT_NORMAL) {}
     inline AstCFuncType (en _e) : m_e(_e) {}
     explicit inline AstCFuncType (int _e) : m_e(static_cast<en>(_e)) {}
     operator en () const { return m_e; }
@@ -158,7 +190,7 @@ public:
 	};
 	return names[m_e];
     };
-    inline AstEdgeType () {}
+    inline AstEdgeType () : m_e(ET_ILLEGAL) {}
     inline AstEdgeType (en _e) : m_e(_e) {}
     explicit inline AstEdgeType (int _e) : m_e(static_cast<en>(_e)) {}
     operator en () const { return m_e; }
@@ -172,6 +204,7 @@ public:
 class AstAttrType {
 public:
     enum en {
+	ILLEGAL,
 	EXPR_BITS,			// V3Const converts to constant
 	//
 	VAR_BASE,			// V3LinkResolve creates for AstPreSel, V3LinkParam removes
@@ -182,19 +215,20 @@ public:
 	VAR_PUBLIC_FLAT_RD,		// V3LinkParse moves to AstVar::sigPublic
 	VAR_PUBLIC_FLAT_RW,		// V3LinkParse moves to AstVar::sigPublic
 	VAR_ISOLATE_ASSIGNMENTS,	// V3LinkParse moves to AstVar::attrIsolateAssign
+	VAR_SC_BV,			// V3LinkParse moves to AstVar::attrScBv
 	VAR_SFORMAT			// V3LinkParse moves to AstVar::attrSFormat
     };
     enum en m_e;
     const char* ascii() const {
 	static const char* names[] = {
-	    "EXPR_BITS", "VAR_BASE",
+	    "%E-AT", "EXPR_BITS", "VAR_BASE",
 	    "VAR_CLOCK", "VAR_CLOCK_ENABLE", "VAR_PUBLIC",
 	    "VAR_PUBLIC_FLAT", "VAR_PUBLIC_FLAT_RD","VAR_PUBLIC_FLAT_RW",
-	    "VAR_ISOLATE_ASSIGNMENTS", "VAR_SFORMAT"
+	    "VAR_ISOLATE_ASSIGNMENTS", "VAR_SC_BV", "VAR_SFORMAT"
 	};
 	return names[m_e];
     };
-    inline AstAttrType () {}
+    inline AstAttrType () : m_e(ILLEGAL) {}
     inline AstAttrType (en _e) : m_e(_e) {}
     explicit inline AstAttrType (int _e) : m_e(static_cast<en>(_e)) {}
     operator en () const { return m_e; }
@@ -208,8 +242,9 @@ public:
 class AstBasicDTypeKwd {
 public:
     enum en {
+	UNKNOWN,
 	BIT, BYTE, CHANDLE, INT, INTEGER, LOGIC, LONGINT,
-	REAL, REALTIME,	SHORTINT, SHORTREAL, TIME,
+	DOUBLE, SHORTINT, FLOAT, TIME,
 	// Closer to a class type, but limited usage
 	STRING,
 	// Internal types for mid-steps
@@ -220,8 +255,9 @@ public:
     enum en m_e;
     const char* ascii() const {
 	static const char* names[] = {
+	    "%E-unk",
 	    "bit", "byte", "chandle", "int", "integer", "logic", "longint",
-	    "real", "realtime", "shortint", "shortreal", "time",
+	    "real", "shortint", "shortreal", "time",
 	    "string",
 	    "VerilatedScope*", "char*",
 	    "LOGIC_IMPLICIT"
@@ -230,15 +266,16 @@ public:
     };
     const char* dpiType() const {
 	static const char* names[] = {
+	    "%E-unk",
 	    "unsigned char", "char", "void*", "int", "int", "svLogic", "long long",
-	    "double", "double", "short int", "float", "long long",
+	    "double", "short int", "float", "long long",
 	    "const char*",
 	    "dpiScope", "const char*",
 	    ""
 	};
 	return names[m_e];
     };
-    inline AstBasicDTypeKwd () {}
+    inline AstBasicDTypeKwd () : m_e(UNKNOWN) {}
     inline AstBasicDTypeKwd (en _e) : m_e(_e) {}
     explicit inline AstBasicDTypeKwd (int _e) : m_e(static_cast<en>(_e)) {}
     operator en () const { return m_e; }
@@ -251,6 +288,8 @@ public:
 	case INTEGER:	return 32;
 	case LOGIC:	return 1;
 	case LONGINT:	return 64;
+	case DOUBLE:	return 64;
+	case FLOAT:	return 32;
 	case SHORTINT:	return 16;
 	case TIME:	return 64;
 	case STRING:	return 64;  // Just the pointer, for today
@@ -265,7 +304,7 @@ public:
     }
     bool isZeroInit() const { // Otherwise initializes to X
 	return (m_e==BIT || m_e==BYTE || m_e==CHANDLE || m_e==INT || m_e==LONGINT || m_e==SHORTINT
-		|| m_e==STRING);
+		|| m_e==STRING || m_e==DOUBLE || m_e==FLOAT);
     }
     bool isSloppy() const { // Don't be as anal about width warnings
 	return !(m_e==LOGIC || m_e==BIT);
@@ -274,10 +313,13 @@ public:
 	return (m_e==LOGIC || m_e==BIT);
     }
     bool isDpiUnsupported() const {
-	return (m_e==LOGIC || m_e==TIME || m_e==REALTIME);
+	return (m_e==LOGIC || m_e==TIME);
     }
     bool isOpaque() const {  // IE not a simple number we can bit optimize
-	return (m_e==STRING || m_e==SCOPEPTR || m_e==CHARPTR);
+	return (m_e==STRING || m_e==SCOPEPTR || m_e==CHARPTR || m_e==DOUBLE || m_e==FLOAT);
+    }
+    bool isDouble() const {
+	return (m_e==DOUBLE);
     }
   };
   inline bool operator== (AstBasicDTypeKwd lhs, AstBasicDTypeKwd rhs) { return (lhs.m_e == rhs.m_e); }
@@ -316,7 +358,7 @@ public:
 	XTEMP
     };
     enum en m_e;
-    inline AstVarType () {}
+    inline AstVarType () : m_e(UNKNOWN) {}
     inline AstVarType (en _e) : m_e(_e) {}
     explicit inline AstVarType (int _e) : m_e(static_cast<en>(_e)) {}
     operator en () const { return m_e; }
@@ -374,7 +416,7 @@ public:
 	CT_CASEZ
     };
     enum en m_e;
-    inline AstCaseType () {}
+    inline AstCaseType () : m_e(CT_CASE) {}
     inline AstCaseType (en _e) : m_e(_e) {}
     explicit inline AstCaseType (int _e) : m_e(static_cast<en>(_e)) {}
     operator en () const { return m_e; }
@@ -396,7 +438,7 @@ public:
 	DT_FATAL
     };
     enum en m_e;
-    inline AstDisplayType () {}
+    inline AstDisplayType () : m_e(DT_DISPLAY) {}
     inline AstDisplayType (en _e) : m_e(_e) {}
     explicit inline AstDisplayType (int _e) : m_e(static_cast<en>(_e)) {}
     operator en () const { return m_e; }
@@ -606,7 +648,7 @@ public:
     AstNRelinker() { m_backp=NULL; m_chg=RELINK_BAD; m_iterpp=NULL;}
     void relink(AstNode* newp);
     AstNode* oldp() const { return m_oldp; }
-    void dump(ostream& str=cout);
+    void dump(ostream& str=cout) const;
 };
 inline ostream& operator<<(ostream& os, AstNRelinker& rhs) { rhs.dump(os); return os;}
 
@@ -684,7 +726,9 @@ class AstNode {
     static int	s_cloneCntGbl;	// Count of which userp is set
 
     // Attributes
-    bool	m_signed:1;	// Node is signed
+    uint32_t	m_numeric:2;	// Node is real/signed - important that bitfields remain unsigned
+    bool	m_didWidth:1;	// Did V3Width computation
+    bool	m_doingWidth:1;	// Inside V3Width
     //		// Space for more bools here
 
     int		m_width;	// Bit width of operation
@@ -717,6 +761,7 @@ class AstNode {
     void	deleteTreeIter();
     void	deleteNode();
     static void	relinkOneLink(AstNode*& pointpr, AstNode* newp);
+    // cppcheck-suppress functionConst
     void	debugTreeChange(const char* prefix, int lineno, bool next);
 
 protected:
@@ -780,6 +825,9 @@ public:
     static int	instrCountLd() { return 2; }		///< Instruction cycles to load memory
     static int	instrCountMul() { return 3; }		///< Instruction cycles to multiply integers
     static int	instrCountPli() { return 20; }		///< Instruction cycles to call pli routines
+    static int	instrCountDouble() { return 8; }	///< Instruction cycles to convert or do floats
+    static int	instrCountDoubleDiv() { return 40; }	///< Instruction cycles to divide floats
+    static int	instrCountDoubleTrig() { return 200; }	///< Instruction cycles to do triganomics
     static int	instrCountCall() { return instrCountBranch()+10; }	///< Instruction cycles to call subroutine
     static int	instrCountTime() { return instrCountCall()+5; }		///< Instruction cycles to determine simulation time
 
@@ -807,10 +855,18 @@ public:
     bool	widthSized() const { return !m_widthMin || m_widthMin==m_width; }
     void	width(int width, int sized) { m_width=width; m_widthMin=sized; }
     void	widthFrom(AstNode* fromp) { if (fromp) { m_width=fromp->m_width; m_widthMin=fromp->m_widthMin; }}
-    void	widthSignedFrom(AstNode* fromp) { widthFrom(fromp); signedFrom(fromp); }
+    void	widthSignedFrom(AstNode* fromp) { widthFrom(fromp); numericFrom(fromp); }
-    void	signedFrom(AstNode* fromp) { if (fromp) { m_signed=fromp->m_signed; }}
+    void	numericFrom(AstNode* fromp) { numeric(fromp->numeric()); }
-    void	isSigned(bool flag) { m_signed=flag; }
+    void	numeric(AstNumeric flag) { m_numeric = (int)flag; if (flag.isDouble()) width(64,64); }
-    bool	isSigned() const { return m_signed; }
+    AstNumeric	numeric() const { return AstNumeric(m_numeric); }
+    bool	isDouble() const { return numeric().isDouble(); }
+    bool	isSigned() const { return numeric().isSigned(); }
+    void	isSigned(bool flag) { numeric(flag ? AstNumeric::SIGNED : AstNumeric::UNSIGNED); }
+    bool	isUnsigned() const { return numeric().isUnsigned(); }
+    void	didWidth(bool flag) { m_didWidth=flag; }
+    bool	didWidth() const { return m_didWidth; }
+    void	doingWidth(bool flag) { m_doingWidth=flag; }
+    bool	doingWidth() const { return m_doingWidth; }
     bool	isQuad() const { return (width()>VL_WORDSIZE && width()<=VL_QUADSIZE); }
     bool	isWide() const { return (width()>VL_QUADSIZE); }
 
@@ -898,7 +954,7 @@ public:
     bool	sameTree(AstNode* node2p);	// Does tree of this == node2p?
     void	deleteTree();	// Always deletes the next link
     void	checkTree();  // User Interface version
-    void	dumpPtrs(ostream& str=cout);
+    void	dumpPtrs(ostream& str=cout) const;
     void	dumpTree(ostream& str=cout, const string& indent="    ", int maxDepth=0);
     void	dumpTreeAndNext(ostream& str=cout, const string& indent="    ", int maxDepth=0);
     void	dumpTreeFile(const string& filename, bool append=false);
@@ -965,6 +1021,7 @@ struct AstNodeTermop : public AstNodeMath {
     ASTNODE_BASE_FUNCS(NodeTermop)
     // Know no children, and hot function, so skip iterator for speed
     // See checkTreeIter also that asserts no children
+    // cppcheck-suppress functionConst
     void iterateChildren(AstNVisitor& v, AstNUser* vup=NULL) { }
 };
 
@@ -976,10 +1033,13 @@ struct AstNodeUniop : public AstNodeMath {
 	setOp1p(lhsp); }
     ASTNODE_BASE_FUNCS(NodeUniop)
     AstNode*	lhsp() 	const { return op1p()->castNode(); }
+    void	lhsp(AstNode* nodep)  { return setOp1p(nodep); }
     // METHODS
     virtual void numberOperate(V3Number& out, const V3Number& lhs) = 0; // Set out to evaluation of a AstConst'ed lhs
     virtual bool cleanLhs() = 0;
     virtual bool sizeMattersLhs() = 0; // True if output result depends on lhs size
+    virtual bool signedFlavor() const { return false; }	// Signed flavor of nodes with both flavors?
+    virtual bool doubleFlavor() const { return false; }	// D flavor of nodes with both flavors?
     virtual int instrCount()	const { return widthInstrs(); }
     virtual V3Hash sameHash() const { return V3Hash(); }
     virtual bool same(AstNode*) const { return true; }
@@ -1002,6 +1062,7 @@ struct AstNodeBiop : public AstNodeMath {
     virtual bool sizeMattersLhs() = 0; // True if output result depends on lhs size
     virtual bool sizeMattersRhs() = 0; // True if output result depends on rhs size
     virtual bool signedFlavor() const { return false; }	// Signed flavor of nodes with both flavors?
+    virtual bool doubleFlavor() const { return false; }	// D flavor of nodes with both flavors?
     virtual int instrCount()	const { return widthInstrs(); }
     virtual V3Hash sameHash() const { return V3Hash(); }
     virtual bool same(AstNode*) const { return true; }
@@ -1223,6 +1284,7 @@ public:
     void packagep(AstPackage* nodep) { m_packagep=nodep; }
     // Know no children, and hot function, so skip iterator for speed
     // See checkTreeIter also that asserts no children
+    // cppcheck-suppress functionConst
     void iterateChildren(AstNVisitor& v, AstNUser* vup=NULL) { }
 };
 
@@ -1274,7 +1336,6 @@ private:
     string	m_name;		// Name of task
     string	m_cname;	// Name of task if DPI import
     bool	m_taskPublic:1;	// Public task
-    bool	m_didSigning:1;	// V3Signed completed; can skip iteration
     bool	m_attrIsolateAssign:1;// User isolate_assignments attribute
     bool	m_prototype:1;	// Just a prototype
     bool	m_dpiExport:1;	// DPI exported
@@ -1285,7 +1346,7 @@ private:
 public:
     AstNodeFTask(FileLine* fileline, const string& name, AstNode* stmtsp)
 	: AstNode(fileline)
-	, m_name(name), m_taskPublic(false), m_didSigning(false)
+	, m_name(name), m_taskPublic(false)
 	, m_attrIsolateAssign(false), m_prototype(false)
 	, m_dpiExport(false), m_dpiImport(false), m_dpiContext(false)
 	, m_dpiTask(false), m_pure(false) {
@@ -1312,8 +1373,6 @@ public:
     void 	scopeNamep(AstNode* nodep) { setNOp4p(nodep); }
     void	taskPublic(bool flag) { m_taskPublic=flag; }
     bool	taskPublic() const { return m_taskPublic; }
-    void	didSigning(bool flag) { m_didSigning=flag; }
-    bool	didSigning() const { return m_didSigning; }
     void	attrIsolateAssign(bool flag) { m_attrIsolateAssign = flag; }
     bool	attrIsolateAssign() const { return m_attrIsolateAssign; }
     void	prototype(bool flag) { m_prototype = flag; }

src/V3AstNodes.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -70,7 +70,7 @@ bool AstVar::isScQuad() const {
 }
 
 bool AstVar::isScBv() const {
-    return (isSc() && width() >= v3Global.opt.pinsBv());
+    return ((isSc() && width() >= v3Global.opt.pinsBv()) || m_attrScBv);
 }
 
 void AstVar::combineType(AstVarType type) {
@@ -113,6 +113,10 @@ string AstVar::vlArgType(bool named, bool forReturn) const {
 	arg += "const char*";
     } else if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::SCOPEPTR) {
 	arg += "const VerilatedScope*";
+    } else if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::DOUBLE) {
+	arg += "double";
+    } else if (bdtypep && bdtypep->keyword()==AstBasicDTypeKwd::FLOAT) {
+	arg += "float";
     } else if (strtype) {
 	if (isInOnly()) arg += "const ";
 	arg += "string";
@@ -185,7 +189,7 @@ string AstVar::cPubArgType(bool named, bool forReturn) const {
     } else if (isWide()) {
 	arg += "uint32_t";  // []'s added later
     } else {
-	arg += "uint64_t";
+	arg += "vluint64_t";
     }
     if (isWide()) {
 	if (forReturn) v3error("Unsupported: Public functions with >64 bit outputs; make an output of a public task instead");
@@ -202,7 +206,6 @@ string AstVar::dpiArgType(bool named, bool forReturn) const {
     if (forReturn) named=false;
     string arg;
     if (!basicp()) arg = "UNKNOWN";
-    if (isWide()) v3error("Unsupported: DPI functions with vectored outputs > 32-bits");
     if (basicp()->isBitLogic()) {
 	if (widthMin() == 1) {
 	    arg = "unsigned char";
@@ -238,7 +241,7 @@ string AstVar::scType() const {
 	    return "uint32_t";
 	}
     } else {
-	return "uint64_t";
+	return "vluint64_t";
     }
 }
 
@@ -498,8 +501,9 @@ void AstNode::dump(ostream& os) {
 	//<<" "<<(void*)this->m_backp
       <<" <e"<<dec<<editCount()
       <<((editCount()>=editCountLast())?"#>":">")
-      <<" {"<<dec<<fileline()->lineno()<<"}"
+      <<" {"<<fileline()->filenameLetters()<<dec<<fileline()->lineno()<<"}"
       <<" "<<(isSigned()?"s":"")
+      <<(isDouble()?"d":"")
       <<"w"<<(widthSized()?"":"u")<<width();
     if (!widthSized()) os<<"/"<<widthMin();
     if (name()!="") os<<"  "<<AstNode::quoteName(name());
@@ -522,7 +526,7 @@ void AstBasicDType::dump(ostream& str) {
     str<<" ["<<keyword().ascii()<<"]";
     if (implicit()) str<<" [IMPLICIT]";
 }
-void AstCast::dump(ostream& str) {
+void AstCCast::dump(ostream& str) {
     this->AstNode::dump(str);
     str<<" sz"<<size();
 }
@@ -609,8 +613,10 @@ void AstVar::dump(ostream& str) {
 	else if (isInput()) str<<" [I]";
 	else if (isOutput()) str<<" [O]";
     }
-    if (isUsedClock()) str<<" [C]";
+    if (isConst()) str<<" [CONST]";
+    if (isUsedClock()) str<<" [CLK]";
     if (isSigPublic()) str<<" [P]";
+    if (isUsedLoopIdx()) str<<" [LOOP]"; 
     if (attrClockEn()) str<<" [aCLKEN]";
     if (attrIsolateAssign()) str<<" [aISO]";
     if (attrFileDescr()) str<<" [aFD]";

src/V3AstNodes.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -46,19 +46,25 @@ struct AstConst : public AstNodeMath {
 private:
     V3Number	m_num;		// Constant value
 public:
-    class Unsized32 {};		// for creator type-overload selection
     AstConst(FileLine* fl, const V3Number& num)
 	:AstNodeMath(fl)
 	 ,m_num(num) {
 	width(m_num.width(), m_num.sized()?0:m_num.minWidth());
-	isSigned(m_num.isSigned());
+	numeric(m_num.isDouble() ? AstNumeric::DOUBLE
+		   : m_num.isSigned() ? AstNumeric::SIGNED
+		   : AstNumeric::UNSIGNED);
     }
     AstConst(FileLine* fl, uint32_t num)
 	:AstNodeMath(fl)
 	,m_num(V3Number(fl,32,num)) { width(m_num.width(), m_num.sized()?0:m_num.minWidth()); }
+    class Unsized32 {};		// for creator type-overload selection
     AstConst(FileLine* fl, Unsized32, uint32_t num)  // Unsized 32-bit integer of specified value
 	:AstNodeMath(fl)
 	,m_num(V3Number(fl,32,num)) { m_num.width(32,false); width(32,m_num.minWidth()); }
+    class RealDouble {};		// for creator type-overload selection
+    AstConst(FileLine* fl, RealDouble, double num)
+	:AstNodeMath(fl)
+	,m_num(V3Number(fl,64)) { m_num.setDouble(num); numeric(AstNumeric::DOUBLE); }
     class LogicFalse {};
     AstConst(FileLine* fl, LogicFalse) // Shorthand const 0, know the dtype should be a logic of size 1
 	:AstNodeMath(fl)
@@ -258,7 +264,8 @@ private:
 	    m_keyword = AstBasicDTypeKwd::LOGIC;
 	}
 	if (signst == signedst_NOP && keyword().isSigned()) signst = signedst_SIGNED;
-	setSignedState(signst);
+	if (keyword().isDouble()) numeric(AstNumeric::DOUBLE);
+	else setSignedState(signst);
 	if (!rangep) {  // Set based on keyword properties
 	    // V3Width will pull from this width
 	    if (keyword().width() > 1 && !isOpaque()) rangep = new AstRange(fileline(), keyword().width()-1, 0);
@@ -278,7 +285,8 @@ public:
     AstRange*	rangep() 	const { return op1p()->castRange(); }	// op1 = Range of variable
     void	rangep(AstRange* nodep) { setNOp1p(nodep); }
     void	setSignedState(AstSignedState signst) {
-	if (signst!=signedst_NOP) isSigned(signst==signedst_SIGNED);
+	if (signst==signedst_UNSIGNED) numeric(AstNumeric::UNSIGNED);
+	else if (signst==signedst_SIGNED) numeric(AstNumeric::SIGNED);
     }
     // METHODS
     virtual AstBasicDType* basicp() const { return (AstBasicDType*)this; }  // (Slow) recurse down to find basic data type
@@ -300,6 +308,25 @@ public:
     void	implicit(bool flag) { m_implicit = flag; }
 };
 
+struct AstConstDType : public AstNodeDType {
+    // const data type, ie "const some_dtype var_name [2:0]"
+    // ConstDType are removed in V3LinkLValue and become AstVar::isConst.
+    // When more generic types are supported AstConstDType will be propagated further.
+    AstConstDType(FileLine* fl, AstNodeDType* dtypep)
+	: AstNodeDType(fl) {
+	setOp1p(dtypep);
+	widthSignedFrom(dtypep);
+    }
+    ASTNODE_NODE_FUNCS(ConstDType, CONSTDTYPE)
+    AstNodeDType* dtypep() const { return op1p()->castNodeDType(); } // op1 = Range of variable
+    void	dtypep(AstNodeDType* nodep) { setOp1p(nodep); }
+    // METHODS
+    virtual AstBasicDType* basicp() const { return dtypep()->basicp(); }  // (Slow) recurse down to find basic data type
+    virtual AstNodeDType* skipRefp() const { return (AstNodeDType*)this; }
+    virtual int widthAlignBytes() const { return dtypep()->widthAlignBytes(); }
+    virtual int widthTotalBytes() const { return dtypep()->widthTotalBytes(); }
+};
+
 struct AstRefDType : public AstNodeDType {
 private:
     AstTypedef*	m_defp;
@@ -364,9 +391,10 @@ public:
 struct AstEnumItemRef : public AstNodeMath {
 private:
     AstEnumItem* m_itemp;	// [AfterLink] Pointer to item
+    AstPackage*	m_packagep;	// Package hierarchy
 public:
-    AstEnumItemRef(FileLine* fl, AstEnumItem* itemp)
+    AstEnumItemRef(FileLine* fl, AstEnumItem* itemp, AstPackage* packagep)
-	: AstNodeMath(fl), m_itemp(itemp) {
+	: AstNodeMath(fl), m_itemp(itemp), m_packagep(packagep) {
 	if (m_itemp) widthSignedFrom(m_itemp);
     }
     ASTNODE_NODE_FUNCS(EnumItemRef, ENUMITEMREF)
@@ -381,6 +409,8 @@ public:
     virtual string emitVerilog() { V3ERROR_NA; return ""; }  // Implemented specially
     virtual string emitC() { V3ERROR_NA; return ""; }
     virtual bool cleanOut() { return true; }
+    AstPackage* packagep() const { return m_packagep; }
+    void packagep(AstPackage* nodep) { m_packagep=nodep; }
 };
 
 struct AstEnumDType : public AstNodeDType {
@@ -431,10 +461,10 @@ public:
     virtual V3Hash sameHash() const { return V3Hash(); }
     virtual bool same(AstNode* samep) const { return true; }
     virtual int instrCount() const { return widthInstrs(); }
-    unsigned length() { return m_length; }
+    unsigned length() const { return m_length; }
     void     length(unsigned length) { m_length = length; }
     void     start(unsigned start) { m_start = start; }
-    unsigned start() { return m_start; }
+    unsigned start() const { return m_start; }
     // Special operators
     static int dimension(AstNode* nodep); ///< How many dimensions is this reference from the base variable?
     static AstNode* baseFromp(AstNode* nodep);	///< What is the base variable (or const) this dereferences?
@@ -553,9 +583,11 @@ private:
     bool	m_sigUserRWPublic:1; // User C code accesses this signal, read-write
     bool	m_usedClock:1;	// Signal used as a clock
     bool	m_usedParam:1;	// Parameter is referenced (on link; later signals not setup)
+    bool	m_usedLoopIdx:1; // Variable subject of for unrolling
     bool	m_funcLocal:1;	// Local variable for a function
     bool	m_funcReturn:1;	// Return variable for a function
     bool	m_attrClockEn:1;// User clock enable attribute
+    bool	m_attrScBv:1; // User force bit vector attribute
     bool	m_attrIsolateAssign:1;// User isolate_assignments attribute
     bool	m_attrSFormat:1;// User sformat attribute
     bool	m_fileDescr:1;	// File descriptor
@@ -567,10 +599,10 @@ private:
 	m_input=false; m_output=false; m_tristate=false;
 	m_primaryIO=false;
 	m_sc=false; m_scClocked=false; m_scSensitive=false;
-	m_usedClock=false; m_usedParam=false;
+	m_usedClock=false; m_usedParam=false; m_usedLoopIdx=false;
 	m_sigPublic=false; m_sigModPublic=false; m_sigUserRdPublic=false; m_sigUserRWPublic=false;
 	m_funcLocal=false; m_funcReturn=false;
-	m_attrClockEn=false; m_attrIsolateAssign=false; m_attrSFormat=false;
+	m_attrClockEn=false; m_attrScBv=false; m_attrIsolateAssign=false; m_attrSFormat=false;
 	m_fileDescr=false; m_isConst=false; m_isStatic=false;
 	m_trace=false;
     }
@@ -581,6 +613,7 @@ public:
 	init();
 	combineType(type); setOp1p(dtypep);
 	if (dtypep && dtypep->basicp()) {
+	    numericFrom(dtypep);
 	    width(dtypep->basicp()->width(), 0);
 	} else width(1, 0);
     }
@@ -600,6 +633,7 @@ public:
 	if (examplep->dtypep()) {
 	    setOp1p(examplep->dtypep()->cloneTree(true));
 	}
+	numericFrom(examplep);
 	width(examplep->width(), examplep->widthMin());
     }
     ASTNODE_NODE_FUNCS(Var, VAR)
@@ -631,10 +665,12 @@ public:
     void	attrClockEn(bool flag) { m_attrClockEn = flag; }
     void	attrFileDescr(bool flag) { m_fileDescr = flag; }
     void	attrScClocked(bool flag) { m_scClocked = flag; }
+    void	attrScBv(bool flag) { m_attrScBv = flag; }
     void	attrIsolateAssign(bool flag) { m_attrIsolateAssign = flag; }
     void	attrSFormat(bool flag) { m_attrSFormat = flag; }
     void	usedClock(bool flag) { m_usedClock = flag; }
     void	usedParam(bool flag) { m_usedParam = flag; }
+    void	usedLoopIdx(bool flag) { m_usedLoopIdx = flag; }
     void	sigPublic(bool flag) { m_sigPublic = flag; }
     void	sigModPublic(bool flag) { m_sigModPublic = flag; }
     void	sigUserRdPublic(bool flag) { m_sigUserRdPublic = flag; if (flag) sigPublic(true); }
@@ -665,7 +701,7 @@ public:
     bool	isToggleCoverable() const  { return ((isIO() || isSignal())
 						     && (isIO() || isBitLogic())
 						     // Wrapper would otherwise duplicate wrapped module's coverage
-						     && !isSc() && !isPrimaryIO()); }
+						     && !isSc() && !isPrimaryIO() && !isConst()); }
     bool	isStatementTemp() const { return (varType()==AstVarType::STMTTEMP); }
     bool	isMovableToBlock() const { return (varType()==AstVarType::BLOCKTEMP || isFuncLocal()); }
     bool	isPure() const { return (varType()==AstVarType::XTEMP); }
@@ -675,6 +711,7 @@ public:
     bool	isBitLogic() const { AstBasicDType* bdtypep = basicp(); return bdtypep && bdtypep->isBitLogic(); }
     bool	isUsedClock() const { return m_usedClock; }
     bool	isUsedParam() const { return m_usedParam; }
+    bool	isUsedLoopIdx() const { return m_usedLoopIdx; }
     bool	isSc() const { return m_sc; }
     bool	isScQuad() const;
     bool	isScBv() const;
@@ -689,6 +726,7 @@ public:
     bool	isFuncLocal() const { return m_funcLocal; }
     bool	isFuncReturn() const { return m_funcReturn; }
     bool	attrClockEn() const { return m_attrClockEn; }
+    bool	attrScBv() const { return m_attrScBv; }
     bool	attrFileDescr() const { return m_fileDescr; }
     bool	attrScClocked() const { return m_scClocked; }
     bool	attrSFormat() const { return m_attrSFormat; }
@@ -909,7 +947,9 @@ public:
 	,m_name(name), m_svImplicit(false) {
 	m_pinNum = pinNum;
 	m_modVarp = NULL;
-	setNOp1p(exprp); }
+	setNOp1p(exprp);
+	if (exprp) widthSignedFrom(exprp);
+    }
     ASTNODE_NODE_FUNCS(Pin, PIN)
     virtual void dump(ostream& str);
     virtual bool broken() const { return (m_modVarp && !m_modVarp->brokeExists()); }
@@ -918,7 +958,7 @@ public:
     bool	dotStar()	const { return name() == ".*"; }	// Special fake name for .* connections until linked
     int		pinNum()	const { return m_pinNum; }
     void	exprp(AstNode* nodep) { addOp1p(nodep); }
-    AstNode*	exprp()		const { return op1p()->castNode(); }	// op1 = Expression connected to pin
+    AstNode*	exprp()		const { return op1p()->castNode(); }	// op1 = Expression connected to pin, NULL if unconnected
     AstVar*	modVarp()	const { return m_modVarp; }		// [After Link] Pointer to variable
     void  	modVarp(AstVar* varp) { m_modVarp=varp; }
     bool	svImplicit()	const { return m_svImplicit; }
@@ -933,6 +973,14 @@ struct AstModule : public AstNodeModule {
     virtual string verilogKwd() const { return "module"; }
 };
 
+struct AstNotFoundModule : public AstNodeModule {
+    // A missing module declaration
+    AstNotFoundModule(FileLine* fl, const string& name)
+	: AstNodeModule (fl,name) {}
+    ASTNODE_NODE_FUNCS(NotFoundModule, NOTFOUNDMODULE)
+    virtual string verilogKwd() const { return "/*not-found-*/ module"; }
+};
+
 struct AstPackage : public AstNodeModule {
     // A package declaration
     AstPackage(FileLine* fl, const string& name)
@@ -1538,11 +1586,15 @@ private:
     AstCaseType	m_casex;		// 0=case, 1=casex, 2=casez
     bool	m_fullPragma;		// Synthesis full_case
     bool	m_parallelPragma;	// Synthesis parallel_case
+    bool	m_uniquePragma;		// unique case
+    bool	m_unique0Pragma;	// unique0 case
+    bool	m_priorityPragma;	// priority case
 public:
     AstCase(FileLine* fileline, AstCaseType casex, AstNode* exprp, AstNode* casesp)
 	: AstNodeCase(fileline, exprp, casesp) {
 	m_casex=casex;
 	m_fullPragma=false; m_parallelPragma=false;
+	m_uniquePragma=false; m_unique0Pragma=false; m_priorityPragma=false;
     }
     ASTNODE_NODE_FUNCS(Case, CASE)
     virtual string  verilogKwd() const { return casez()?"casez":casex()?"casex":"case"; }
@@ -1554,6 +1606,12 @@ public:
     void	fullPragma(bool flag)	{ m_fullPragma=flag; }
     bool	parallelPragma()	const { return m_parallelPragma; }
     void	parallelPragma(bool flag) { m_parallelPragma=flag; }
+    bool	uniquePragma() const { return m_uniquePragma; }
+    void	uniquePragma(bool flag) { m_uniquePragma=flag; }
+    bool	unique0Pragma()	const { return m_unique0Pragma; }
+    void	unique0Pragma(bool flag) { m_unique0Pragma=flag; }
+    bool	priorityPragma() const { return m_priorityPragma; }
+    void	priorityPragma(bool flag) { m_priorityPragma=flag; }
 };
 
 struct AstCaseItem : public AstNode {
@@ -1580,7 +1638,7 @@ public:
     void	ignoreOverlap(bool flag) { m_ignoreOverlap = flag; }
 };
 
-class AstSFormatF : public AstNode {
+struct AstSFormatF : public AstNode {
     // Convert format to string, generally under a AstDisplay or AstSFormat
     // Also used as "real" function for /*verilator sformat*/ functions
     string	m_text;
@@ -1669,6 +1727,22 @@ struct AstSFormat : public AstNode {
     void 	lhsp(AstNode* nodep) { setOp3p(nodep); }
 };
 
+struct AstSysIgnore : public AstNode {
+    // Parents: stmtlist
+    // Children: varrefs or exprs
+    AstSysIgnore(FileLine* fileline, AstNode* exprsp)
+	: AstNode (fileline) { addNOp1p(exprsp); }
+    ASTNODE_NODE_FUNCS(SysIgnore, SYSIGNORE)
+    virtual string verilogKwd() const { return "$ignored"; }
+    virtual bool isGateOptimizable() const { return false; }  // Though deleted before opt
+    virtual bool isPredictOptimizable() const { return false; }  // Though deleted before opt
+    virtual bool isSplittable() const { return false; }  // Though deleted before opt
+    virtual bool isOutputter() const { return true; }  // Though deleted before opt
+    virtual int instrCount()	const { return instrCountPli(); }
+    AstNode*	exprsp()	const { return op1p()->castNode(); }	// op1 = Expressions to output
+    void 	exprsp(AstNode* nodep)	{ addOp1p(nodep); }	// op1 = Expressions to output
+};
+
 struct AstFClose : public AstNodeStmt {
     // Parents: stmtlist
     // Children: file which must be a varref
@@ -1821,6 +1895,45 @@ public:
     AstNode*	msbp() const { return op4p()->castNode(); }
 };
 
+struct AstSystemT : public AstNodeStmt {
+    // $system used as task
+    AstSystemT(FileLine* fileline, AstNode* lhsp)
+	: AstNodeStmt (fileline) {
+	setOp1p(lhsp);
+    }
+    ASTNODE_NODE_FUNCS(SystemT, SYSTEMT)
+    virtual string verilogKwd() const { return "$system"; }
+    virtual bool isGateOptimizable() const { return false; }
+    virtual bool isPredictOptimizable() const { return false; }
+    virtual bool isSplittable() const { return false; }
+    virtual bool isOutputter() const { return true; }
+    virtual bool isUnlikely() const { return true; }
+    virtual V3Hash sameHash() const { return V3Hash(); }
+    virtual bool same(AstNode* samep) const { return true; }
+    AstNode*	lhsp() const { return op1p(); }
+};
+
+struct AstSystemF : public AstNodeMath {
+    // $system used as function
+    AstSystemF(FileLine* fileline, AstNode* lhsp)
+	: AstNodeMath (fileline) {
+	setOp1p(lhsp);
+    }
+    ASTNODE_NODE_FUNCS(SystemF, SYSTEMF)
+    virtual string verilogKwd() const { return "$system"; }
+    virtual string emitVerilog() { return verilogKwd(); }
+    virtual string emitC() { return "VL_SYSTEM_%nq(%lw, %P)"; }
+    virtual bool isGateOptimizable() const { return false; }
+    virtual bool isPredictOptimizable() const { return false; }
+    virtual bool isSplittable() const { return false; }
+    virtual bool isOutputter() const { return true; }
+    virtual bool isUnlikely() const { return true; }
+    virtual bool cleanOut() { return true; }
+    virtual V3Hash sameHash() const { return V3Hash(); }
+    virtual bool same(AstNode* samep) const { return true; }
+    AstNode*	lhsp() const { return op1p(); }
+};
+
 struct AstValuePlusArgs : public AstNodeMath {
     // Parents: expr
     // Child: variable to set.  If NULL then this is a $test$plusargs instead of $value$plusargs
@@ -1932,6 +2045,18 @@ struct AstContinue : public AstNodeStmt {
     virtual bool isSplittable() const { return false; }	// SPECIAL: We don't process code after breaks
 };
 
+struct AstDisable : public AstNodeStmt {
+private:
+    string	m_name;		// Name of block
+public:
+    AstDisable(FileLine* fileline, const string& name)
+	: AstNodeStmt(fileline), m_name(name) {}
+    ASTNODE_NODE_FUNCS(Disable, DISABLE)
+    virtual string name()	const { return m_name; }		// * = Block name
+    void name(const string& flag) { m_name=flag; }
+    virtual bool isSplittable() const { return false; }	// SPECIAL: We don't process code after breaks
+};
+
 struct AstReturn : public AstNodeStmt {
     AstReturn(FileLine* fileline, AstNode* lhsp=NULL)
 	: AstNodeStmt (fileline) {
@@ -1952,10 +2077,22 @@ struct AstGenIf : public AstNodeIf {
 };
 
 struct AstIf : public AstNodeIf {
+private:
+    bool	m_uniquePragma;		// unique case
+    bool	m_unique0Pragma;	// unique0 case
+    bool	m_priorityPragma;	// priority case
+public:
     AstIf(FileLine* fileline, AstNode* condp, AstNode* ifsp, AstNode* elsesp)
 	: AstNodeIf(fileline, condp, ifsp, elsesp) {
+	m_uniquePragma=false; m_unique0Pragma=false; m_priorityPragma=false;
     }
     ASTNODE_NODE_FUNCS(If, IF)
+    bool	uniquePragma() const { return m_uniquePragma; }
+    void	uniquePragma(bool flag) { m_uniquePragma=flag; }
+    bool	unique0Pragma()	const { return m_unique0Pragma; }
+    void	unique0Pragma(bool flag) { m_unique0Pragma=flag; }
+    bool	priorityPragma() const { return m_priorityPragma; }
+    void	priorityPragma(bool flag) { m_priorityPragma=flag; }
 };
 
 struct AstJumpLabel : public AstNodeStmt {
@@ -2363,6 +2500,20 @@ struct AstTime : public AstNodeTermop {
     virtual bool same(AstNode* samep) const { return true; }
 };
 
+struct AstTimeD : public AstNodeTermop {
+    AstTimeD(FileLine* fl)	: AstNodeTermop(fl) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(TimeD, TIMED)
+    virtual string emitVerilog() { return "%f$realtime"; }
+    virtual string emitC() { return "VL_TIME_D()"; }
+    virtual bool cleanOut() { return true; }
+    virtual bool isGateOptimizable() const { return false; }
+    virtual bool isPredictOptimizable() const { return false; }
+    virtual int instrCount()	const { return instrCountTime(); }
+    virtual V3Hash sameHash() const { return V3Hash(); }
+    virtual bool same(AstNode* samep) const { return true; }
+};
+
 struct AstUCFunc : public AstNodeMath {
     // User's $c function
     // Perhaps this should be a AstNodeListop; but there's only one list math right now
@@ -2388,19 +2539,32 @@ struct AstUCFunc : public AstNodeMath {
 //======================================================================
 // Unary ops
 
-struct AstUnaryMin : public AstNodeUniop {
+struct AstNegate : public AstNodeUniop {
-    AstUnaryMin(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+    AstNegate(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
 	if (lhsp) widthSignedFrom(lhsp); }
-    ASTNODE_NODE_FUNCS(UnaryMin, UNARYMIN)
+    ASTNODE_NODE_FUNCS(Negate, NEGATE)
-    virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opUnaryMin(lhs); }
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opNegate(lhs); }
     virtual string emitVerilog() { return "%f(- %l)"; }
-    virtual string emitC() { return "VL_UNARYMIN_%lq(%lW, %P, %li)"; }
+    virtual string emitC() { return "VL_NEGATE_%lq(%lW, %P, %li)"; }
     virtual bool cleanOut() {return false;} virtual bool cleanLhs() {return false;}
     virtual bool sizeMattersLhs() {return true;}
 };
+struct AstNegateD : public AstNodeUniop {
+    AstNegateD(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(NegateD, NEGATED)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opNegateD(lhs); }
+    virtual string emitVerilog() { return "%f(- %l)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return "-"; }
+    virtual bool cleanOut() {return true;} virtual bool cleanLhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;}
+    virtual int instrCount()	const { return instrCountDouble(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstRedAnd : public AstNodeUniop {
     AstRedAnd(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
-	width(1,1); }
+	width(1,1); numeric(AstNumeric::UNSIGNED); }
     ASTNODE_NODE_FUNCS(RedAnd, REDAND)
     virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opRedAnd(lhs); }
     virtual string emitVerilog() { return "%f(& %l)"; }
@@ -2410,7 +2574,7 @@ struct AstRedAnd : public AstNodeUniop {
 };
 struct AstRedOr : public AstNodeUniop {
     AstRedOr(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
-	width(1,1); }
+	width(1,1); numeric(AstNumeric::UNSIGNED); }
     ASTNODE_NODE_FUNCS(RedOr, REDOR)
     virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opRedOr(lhs); }
     virtual string emitVerilog() { return "%f(| %l)"; }
@@ -2420,7 +2584,7 @@ struct AstRedOr : public AstNodeUniop {
 };
 struct AstRedXor : public AstNodeUniop {
     AstRedXor(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
-	width(1,1); }
+	width(1,1); numeric(AstNumeric::UNSIGNED); }
     ASTNODE_NODE_FUNCS(RedXor, REDXOR)
     virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opRedXor(lhs); }
     virtual string emitVerilog() { return "%f(^ %l)"; }
@@ -2434,7 +2598,7 @@ struct AstRedXor : public AstNodeUniop {
 struct AstRedXnor : public AstNodeUniop {
     // AstRedXnors are replaced with AstRedXors in V3Const.
     AstRedXnor(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
-	width(1,1); }
+	width(1,1); numeric(AstNumeric::UNSIGNED); }
     ASTNODE_NODE_FUNCS(RedXnor, REDXNOR)
     virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opRedXnor(lhs); }
     virtual string emitVerilog() { return "%f(~^ %l)"; }
@@ -2492,7 +2656,7 @@ struct AstExtendS : public AstNodeUniop {
 struct AstSigned : public AstNodeUniop {
     // $signed(lhs)
     AstSigned(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
-	isSigned(true);
+	numeric(AstNumeric::SIGNED);
     }
     ASTNODE_NODE_FUNCS(Signed, SIGNED)
     virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opAssign(lhs); out.isSigned(false); }
@@ -2505,7 +2669,7 @@ struct AstSigned : public AstNodeUniop {
 struct AstUnsigned : public AstNodeUniop {
     // $unsigned(lhs)
     AstUnsigned(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
-	isSigned(false);
+	numeric(AstNumeric::UNSIGNED);
     }
     ASTNODE_NODE_FUNCS(Unsigned, UNSIGNED)
     virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opAssign(lhs); out.isSigned(false); }
@@ -2515,6 +2679,63 @@ struct AstUnsigned : public AstNodeUniop {
     virtual bool sizeMattersLhs() {return true;}  // Eliminated before matters
     virtual int instrCount()	const { return 0; }
 };
+struct AstRToIS : public AstNodeUniop {
+    // $rtoi(lhs)
+    AstRToIS(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	width(32,32); }
+    ASTNODE_NODE_FUNCS(RToIS, RTOIS)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opRToIS(lhs); }
+    virtual string emitVerilog() { return "%f$rtoi(%l)"; }
+    virtual string emitC() { return "VL_RTOI_I_D(%li)"; }
+    virtual bool cleanOut() {return false;} virtual bool cleanLhs() {return false;}  // Eliminated before matters
+    virtual bool sizeMattersLhs() {return false;}  // Eliminated before matters
+    virtual int instrCount()	const { return instrCountDouble(); }
+};
+struct AstRToIRoundS : public AstNodeUniop {
+    AstRToIRoundS(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	width(32,32); }
+    ASTNODE_NODE_FUNCS(RToIRoundS, RTOIROUNDS)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opRToIRoundS(lhs); }
+    virtual string emitVerilog() { return "%f$rtoi_rounded(%l)"; }
+    virtual string emitC() { return "VL_RTOIROUND_I_D(%li)"; }
+    virtual bool cleanOut() {return false;} virtual bool cleanLhs() {return false;}  // Eliminated before matters
+    virtual bool sizeMattersLhs() {return false;}  // Eliminated before matters
+    virtual int instrCount()	const { return instrCountDouble(); }
+};
+struct AstIToRD : public AstNodeUniop {
+    AstIToRD(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(IToRD, ITORD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opIToRD(lhs); }
+    virtual string emitVerilog() { return "%f$itor(%l)"; }
+    virtual string emitC() { return "VL_ITOR_D_I(%li)"; }
+    virtual bool cleanOut() {return false;} virtual bool cleanLhs() {return false;}  // Eliminated before matters
+    virtual bool sizeMattersLhs() {return false;}  // Eliminated before matters
+    virtual int instrCount()	const { return instrCountDouble(); }
+};
+struct AstRealToBits : public AstNodeUniop {
+    AstRealToBits(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	width(64,64); }
+    ASTNODE_NODE_FUNCS(RealToBits, REALTOBITS)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opRealToBits(lhs); }
+    virtual string emitVerilog() { return "%f$realtobits(%l)"; }
+    virtual string emitC() { return "VL_CVT_Q_D(%li)"; }
+    virtual bool cleanOut() {return false;} virtual bool cleanLhs() {return false;}  // Eliminated before matters
+    virtual bool sizeMattersLhs() {return false;}  // Eliminated before matters
+    virtual int instrCount()	const { return instrCountDouble(); }
+};
+struct AstBitsToRealD : public AstNodeUniop {
+    AstBitsToRealD(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(BitsToRealD, BITSTOREALD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opBitsToRealD(lhs); }
+    virtual string emitVerilog() { return "%f$bitstoreal(%l)"; }
+    virtual string emitC() { return "VL_CVT_D_Q(%li)"; }
+    virtual bool cleanOut() {return false;} virtual bool cleanLhs() {return false;}  // Eliminated before matters
+    virtual bool sizeMattersLhs() {return false;}  // Eliminated before matters
+    virtual int instrCount()	const { return instrCountDouble(); }
+};
+
 struct AstCLog2 : public AstNodeUniop {
     AstCLog2(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {}
     ASTNODE_NODE_FUNCS(CLog2, CLOG2)
@@ -2572,27 +2793,42 @@ struct AstOneHot0 : public AstNodeUniop {
     virtual int instrCount()	const { return widthInstrs()*3; }
 };
 
-struct AstCast : public AstNodeUniop {
+struct AstCast : public AstNode {
-    // Cast to appropriate data type
+    // Cast to appropriate data type - note lhsp is value, to match AstTypedef, AstCCast, etc
+    AstCast(FileLine* fl, AstNode* lhsp, AstNodeDType* dtypep) : AstNode(fl) {
+	setOp1p(lhsp); setOp2p(dtypep);
+	if (dtypep) { widthSignedFrom(dtypep); }
+    }
+    ASTNODE_NODE_FUNCS(Cast, CAST)
+    virtual string emitVerilog() { return "((%r)'(%l))"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual bool cleanOut() { V3ERROR_NA; return true;} virtual bool cleanLhs() {return true;}
+    virtual bool sizeMattersLhs() {return false;}
+    AstNode* lhsp() const { return op1p(); }
+    AstNodeDType* dtypep() const { return op2p()->castNodeDType(); }
+};
+
+struct AstCCast : public AstNodeUniop {
+    // Cast to C-based data type
 private:
     int		m_size;
 public:
-    AstCast(FileLine* fl, AstNode* lhsp, int setwidth) : AstNodeUniop(fl, lhsp) {
+    AstCCast(FileLine* fl, AstNode* lhsp, int setwidth) : AstNodeUniop(fl, lhsp) {
 	m_size=setwidth;
 	if (setwidth) { width(setwidth,setwidth); }
     }
-    AstCast(FileLine* fl, AstNode* lhsp, AstNode* widthFromp) : AstNodeUniop(fl, lhsp) {
+    AstCCast(FileLine* fl, AstNode* lhsp, AstNode* widthFromp) : AstNodeUniop(fl, lhsp) {
 	if (widthFromp) { widthSignedFrom(widthFromp); }
 	m_size=width();
     }
-    ASTNODE_NODE_FUNCS(Cast, CAST)
+    ASTNODE_NODE_FUNCS(CCast, CCAST)
     virtual void numberOperate(V3Number& out, const V3Number& lhs) { out.opAssign(lhs); }
     virtual string emitVerilog() { return "%f$_CAST(%l)"; }
     virtual string emitC() { return "VL_CAST_%nq%lq(%nw,%lw, %P, %li)"; }
     virtual bool cleanOut() {return true;} virtual bool cleanLhs() {return true;}
     virtual bool sizeMattersLhs() {return false;}  // Special cased in V3Cast
     virtual V3Hash sameHash() const { return V3Hash(size()); }
-    virtual bool same(AstNode* samep) const { return size()==samep->castCast()->size(); }
+    virtual bool same(AstNode* samep) const { return size()==samep->castCCast()->size(); }
     virtual void dump(ostream& str=cout);
     //
     int size()	const { return m_size; }
@@ -2617,7 +2853,7 @@ struct AstFEof : public AstNodeUniop {
     ASTNODE_NODE_FUNCS(FEof, FEOF)
     virtual void numberOperate(V3Number& out, const V3Number& lhs) { V3ERROR_NA; }
     virtual string emitVerilog() { return "%f$feof(%l)"; }
-    virtual string emitC() { return "(%li ? feof(VL_CVT_Q_FP(%li)) : true)"; }
+    virtual string emitC() { return "(%li ? feof(VL_CVT_I_FP(%li)) : true)"; }
     virtual bool cleanOut() {return true;} virtual bool cleanLhs() {return true;}
     virtual bool sizeMattersLhs() {return false;}
     virtual int instrCount()	const { return widthInstrs()*16; }
@@ -2630,13 +2866,97 @@ struct AstFGetC : public AstNodeUniop {
     virtual void numberOperate(V3Number& out, const V3Number& lhs) { V3ERROR_NA; }
     virtual string emitVerilog() { return "%f$fgetc(%l)"; }
     // Non-existent filehandle returns EOF
-    virtual string emitC() { return "(%li ? fgetc(VL_CVT_Q_FP(%li)) : -1)"; }
+    virtual string emitC() { return "(%li ? fgetc(VL_CVT_I_FP(%li)) : -1)"; }
     virtual bool cleanOut() {return false;} virtual bool cleanLhs() {return true;}
     virtual bool sizeMattersLhs() {return false;}
     virtual int instrCount()	const { return widthInstrs()*64; }
     AstNode*	filep() const { return lhsp(); }
 };
 
+struct AstCeilD : public AstNodeUniop {
+    AstCeilD(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(CeilD, CEILD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) {
+	out.setDouble(ceil(lhs.toDouble())); }
+    virtual string emitVerilog() { return "%f$ceil(%l)"; }
+    virtual string emitC() { return "ceil(%li)"; }
+    virtual bool cleanOut() {return true;} virtual bool cleanLhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;}
+    virtual int instrCount()	const { return instrCountDoubleTrig(); }
+    virtual bool doubleFlavor() const { return true; }
+};
+
+struct AstExpD : public AstNodeUniop {
+    AstExpD(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(ExpD, EXPD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) {
+	out.setDouble(exp(lhs.toDouble())); }
+    virtual string emitVerilog() { return "%f$exp(%l)"; }
+    virtual string emitC() { return "exp(%li)"; }
+    virtual bool cleanOut() {return true;} virtual bool cleanLhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;}
+    virtual int instrCount()	const { return instrCountDoubleTrig(); }
+    virtual bool doubleFlavor() const { return true; }
+};
+
+struct AstFloorD : public AstNodeUniop {
+    AstFloorD(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(FloorD, FLOORD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) {
+	out.setDouble(floor(lhs.toDouble())); }
+    virtual string emitVerilog() { return "%f$floor(%l)"; }
+    virtual string emitC() { return "floor(%li)"; }
+    virtual bool cleanOut() {return true;} virtual bool cleanLhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;}
+    virtual int instrCount()	const { return instrCountDoubleTrig(); }
+    virtual bool doubleFlavor() const { return true; }
+};
+
+struct AstLogD : public AstNodeUniop {
+    AstLogD(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(LogD, LOGD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) {
+	out.setDouble(log(lhs.toDouble())); }
+    virtual string emitVerilog() { return "%f$ln(%l)"; }
+    virtual string emitC() { return "log(%li)"; }
+    virtual bool cleanOut() {return true;} virtual bool cleanLhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;}
+    virtual int instrCount()	const { return instrCountDoubleTrig(); }
+    virtual bool doubleFlavor() const { return true; }
+};
+
+struct AstLog10D : public AstNodeUniop {
+    AstLog10D(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(Log10D, LOG10D)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) {
+	out.setDouble(log10(lhs.toDouble())); }
+    virtual string emitVerilog() { return "%f$log10(%l)"; }
+    virtual string emitC() { return "log10(%li)"; }
+    virtual bool cleanOut() {return true;} virtual bool cleanLhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;}
+    virtual int instrCount()	const { return instrCountDoubleTrig(); }
+    virtual bool doubleFlavor() const { return true; }
+};
+
+struct AstSqrtD : public AstNodeUniop {
+    AstSqrtD(FileLine* fl, AstNode* lhsp) : AstNodeUniop(fl, lhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(SqrtD, SQRTD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs) {
+	out.setDouble(sqrt(lhs.toDouble())); }
+    virtual string emitVerilog() { return "%f$sqrt(%l)"; }
+    virtual string emitC() { return "sqrt(%li)"; }
+    virtual bool cleanOut() {return true;} virtual bool cleanLhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;}
+    virtual int instrCount()	const { return instrCountDoubleTrig(); }
+    virtual bool doubleFlavor() const { return true; }
+};
+
 //======================================================================
 // Binary ops
 
@@ -2752,6 +3072,20 @@ struct AstEq : public AstNodeBiCom {
     virtual bool cleanLhs() {return true;} virtual bool cleanRhs() {return true;}
     virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
 };
+struct AstEqD : public AstNodeBiCom {
+    AstEqD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiCom(fl, lhsp, rhsp) {
+	width(1,1); }
+    ASTNODE_NODE_FUNCS(EqD, EQD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opEqD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f== %r)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return "=="; }
+    virtual bool cleanOut() {return true;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+    virtual int instrCount()	const { return instrCountDouble(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstNeq : public AstNodeBiCom {
     AstNeq(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiCom(fl, lhsp, rhsp) {
 	width(1,1); }
@@ -2764,6 +3098,20 @@ struct AstNeq : public AstNodeBiCom {
     virtual bool cleanLhs() {return true;} virtual bool cleanRhs() {return true;}
     virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
 };
+struct AstNeqD : public AstNodeBiCom {
+    AstNeqD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiCom(fl, lhsp, rhsp) {
+	width(1,1); }
+    ASTNODE_NODE_FUNCS(NeqD, NEQD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opNeqD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f!= %r)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return "!="; }
+    virtual bool cleanOut() {return true;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+    virtual int instrCount()	const { return instrCountDouble(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstLt : public AstNodeBiop {
     AstLt(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
 	width(1,1); }
@@ -2776,6 +3124,20 @@ struct AstLt : public AstNodeBiop {
     virtual bool cleanLhs() {return true;} virtual bool cleanRhs() {return true;}
     virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
 };
+struct AstLtD : public AstNodeBiop {
+    AstLtD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
+	width(1,1); }
+    ASTNODE_NODE_FUNCS(LtD, LTD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opLtD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f< %r)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return "<"; }
+    virtual bool cleanOut() {return true;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+    virtual int instrCount()	const { return instrCountDouble(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstLtS : public AstNodeBiop {
     AstLtS(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
 	width(1,1); }
@@ -2801,6 +3163,20 @@ struct AstGt : public AstNodeBiop {
     virtual bool cleanLhs() {return true;} virtual bool cleanRhs() {return true;}
     virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
 };
+struct AstGtD : public AstNodeBiop {
+    AstGtD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
+	width(1,1); }
+    ASTNODE_NODE_FUNCS(GtD, GTD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opGtD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f> %r)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return ">"; }
+    virtual bool cleanOut() {return true;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+    virtual int instrCount()	const { return instrCountDouble(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstGtS : public AstNodeBiop {
     AstGtS(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
 	width(1,1); }
@@ -2826,6 +3202,20 @@ struct AstGte : public AstNodeBiop {
     virtual bool cleanLhs() {return true;} virtual bool cleanRhs() {return true;}
     virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
 };
+struct AstGteD : public AstNodeBiop {
+    AstGteD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
+	width(1,1); }
+    ASTNODE_NODE_FUNCS(GteD, GTED)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opGteD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f>= %r)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return ">="; }
+    virtual bool cleanOut() {return true;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+    virtual int instrCount()	const { return instrCountDouble(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstGteS : public AstNodeBiop {
     AstGteS(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
 	width(1,1); }
@@ -2851,6 +3241,20 @@ struct AstLte : public AstNodeBiop {
     virtual bool cleanLhs() {return true;} virtual bool cleanRhs() {return true;}
     virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
 };
+struct AstLteD : public AstNodeBiop {
+    AstLteD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
+	width(1,1); }
+    ASTNODE_NODE_FUNCS(LteD, LTED)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opLteD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f<= %r)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return "<="; }
+    virtual bool cleanOut() {return true;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+    virtual int instrCount()	const { return instrCountDouble(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstLteS : public AstNodeBiop {
     AstLteS(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
 	width(1,1); }
@@ -2919,6 +3323,20 @@ struct AstAdd : public AstNodeBiComAsv {
     virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
     virtual bool sizeMattersLhs() {return true;} virtual bool sizeMattersRhs() {return true;}
 };
+struct AstAddD : public AstNodeBiComAsv {
+    AstAddD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiComAsv(fl, lhsp, rhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(AddD, ADDD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opAddD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f+ %r)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return "+"; }
+    virtual bool cleanOut() {return true;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+    virtual int instrCount()	const { return instrCountDouble(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstSub : public AstNodeBiop {
     AstSub(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
 	if (lhsp) widthSignedFrom(lhsp); }
@@ -2931,6 +3349,20 @@ struct AstSub : public AstNodeBiop {
     virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
     virtual bool sizeMattersLhs() {return true;} virtual bool sizeMattersRhs() {return true;}
 };
+struct AstSubD : public AstNodeBiop {
+    AstSubD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(SubD, SUBD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opSubD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f- %r)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return "-"; }
+    virtual bool cleanOut() {return true;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+    virtual int instrCount()	const { return instrCountDouble(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstMul : public AstNodeBiComAsv {
     AstMul(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiComAsv(fl, lhsp, rhsp) {
 	if (lhsp) widthSignedFrom(lhsp); }
@@ -2944,6 +3376,20 @@ struct AstMul : public AstNodeBiComAsv {
     virtual bool sizeMattersLhs() {return true;} virtual bool sizeMattersRhs() {return true;}
     virtual int instrCount()	const { return widthInstrs()*instrCountMul(); }
 };
+struct AstMulD : public AstNodeBiComAsv {
+    AstMulD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiComAsv(fl, lhsp, rhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(MulD, MULD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opMulD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f* %r)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return "*"; }
+    virtual bool cleanOut() {return true;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return true;} virtual bool sizeMattersRhs() {return true;}
+    virtual int instrCount()	const { return instrCountDouble(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstMulS : public AstNodeBiComAsv {
     AstMulS(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiComAsv(fl, lhsp, rhsp) {
 	if (lhsp) widthSignedFrom(lhsp); }
@@ -2970,6 +3416,20 @@ struct AstDiv : public AstNodeBiop {
     virtual bool sizeMattersLhs() {return true;} virtual bool sizeMattersRhs() {return true;}
     virtual int instrCount()	const { return widthInstrs()*instrCountDiv(); }
 };
+struct AstDivD : public AstNodeBiop {
+    AstDivD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(DivD, DIVD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opDivD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f/ %r)"; }
+    virtual string emitC() { V3ERROR_NA; return ""; }
+    virtual string emitSimpleOperator() { return "/"; }
+    virtual bool cleanOut() {return true;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+    virtual int instrCount()	const { return instrCountDoubleDiv(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstDivS : public AstNodeBiop {
     AstDivS(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
 	if (lhsp) widthSignedFrom(lhsp); }
@@ -3020,6 +3480,19 @@ struct AstPow : public AstNodeBiop {
     virtual bool sizeMattersLhs() {return true;} virtual bool sizeMattersRhs() {return false;}
     virtual int instrCount()	const { return widthInstrs()*instrCountMul(); }
 };
+struct AstPowD : public AstNodeBiop {
+    AstPowD(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
+	numeric(AstNumeric::DOUBLE); }
+    ASTNODE_NODE_FUNCS(PowD, POWD)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opPowD(lhs,rhs); }
+    virtual string emitVerilog() { return "%k(%l %f** %r)"; }
+    virtual string emitC() { return "pow(%li,%ri)"; }
+    virtual bool cleanOut() {return false;}
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+    virtual int instrCount()	const { return instrCountDoubleDiv(); }
+    virtual bool doubleFlavor() const { return true; }
+};
 struct AstPowS : public AstNodeBiop {
     AstPowS(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
 	if (lhsp) widthSignedFrom(lhsp); }
@@ -3109,6 +3582,19 @@ struct AstReplicate : public AstNodeBiop {
     virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
     virtual int instrCount()	const { return widthInstrs()*2; }
 };
+struct AstBufIf1 : public AstNodeBiop {
+    // lhs is enable, rhs is data to drive
+    AstBufIf1(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {
+	if (lhsp) widthSignedFrom(lhsp); }
+    ASTNODE_NODE_FUNCS(BufIf1, BUFIF1)
+    virtual void numberOperate(V3Number& out, const V3Number& lhs, const V3Number& rhs) { out.opBufIf1(lhs,rhs); }
+    virtual string emitVerilog() { return "bufif(%r,%l)"; }
+    virtual string emitC() { V3ERROR_NA; return "";}  // Lclean || Rclean
+    virtual string emitSimpleOperator() { V3ERROR_NA; return "";}  // Lclean || Rclean
+    virtual bool cleanOut() {V3ERROR_NA; return "";}  // Lclean || Rclean
+    virtual bool cleanLhs() {return false;} virtual bool cleanRhs() {return false;}
+    virtual bool sizeMattersLhs() {return false;} virtual bool sizeMattersRhs() {return false;}
+};
 struct AstFGetS : public AstNodeBiop {
     AstFGetS(FileLine* fl, AstNode* lhsp, AstNode* rhsp) : AstNodeBiop(fl, lhsp, rhsp) {}
     ASTNODE_NODE_FUNCS(FGetS, FGETS)
@@ -3543,25 +4029,6 @@ struct AstCReturn : public AstNodeStmt {
     AstNode*	lhsp() const { return op1p(); }
 };
 
-struct AstCInclude : public AstNode {
-    // C++ use of another class
-    // Parents:  MODULE
-    // Children: None
-private:
-    AstNodeModule*	m_modp;
-public:
-    AstCInclude(FileLine* fl, AstNodeModule* modp)
-	: AstNode(fl) {
-	m_modp = modp;
-    }
-    ASTNODE_NODE_FUNCS(CInclude, CINCLUDE)
-    virtual bool broken() const { return (m_modp && !m_modp->brokeExists()); }
-    virtual void cloneRelink() { if (m_modp && m_modp->clonep()) {
-	m_modp = m_modp->clonep()->castNodeModule();
-    }}
-    AstNodeModule*	modp() const { return m_modp; }
-};
-
 struct AstCMath : public AstNodeMath {
 private:
     bool	m_cleanOut;

src/V3Begin.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -53,6 +53,7 @@ private:
     string		m_namedScope;	// Name of begin blocks above us
     string		m_unnamedScope;	// Name of begin blocks, including unnamed blocks
     int			m_repeatNum;	// Repeat counter
+    int			m_ifDepth;	// Current if depth
 
     // METHODS
     static int debug() {
@@ -152,6 +153,21 @@ private:
 	// any BEGINs, but V3Coverage adds them all under the module itself.
 	nodep->iterateChildren(*this);
     }
+    // VISITORS - LINT CHECK
+    virtual void visit(AstIf* nodep, AstNUser*) { // Note not AstNodeIf; other types don't get covered
+	// Check IFDEPTH warning - could be in other transform files if desire
+	int prevIfDepth = m_ifDepth;
+	if (m_ifDepth == -1 || v3Global.opt.ifDepth()<1) { // Turned off
+	} else if (nodep->uniquePragma() || nodep->unique0Pragma() || nodep->priorityPragma()) {
+	    m_ifDepth = -1;
+	} else if (++m_ifDepth > v3Global.opt.ifDepth()) {
+	    nodep->v3warn(IFDEPTH,"Deep 'if' statement; suggest unique/priority to avoid slow logic");
+	    nodep->fileline()->modifyWarnOff(V3ErrorCode::IFDEPTH, true);  // Warn only once
+	    m_ifDepth = -1;
+	}
+	nodep->iterateChildren(*this);
+	m_ifDepth = prevIfDepth;
+     }
     virtual void visit(AstNode* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
     }
@@ -161,6 +177,7 @@ public:
 	m_modp = NULL;
 	m_ftaskp = NULL;
 	m_repeatNum = 0;
+	m_ifDepth = 0;
 	nodep->accept(*this);
     }
     virtual ~BeginVisitor() {}

src/V3Begin.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Branch.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Branch.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Broken.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Broken.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Case.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -148,17 +148,19 @@ private:
 
     bool isCaseTreeFast(AstCase* nodep) {
 	int width = 0;
+	bool opaque = false;
 	m_caseItems = 0;
 	m_caseNoOverlapsAllCovered = true;
 	for (AstCaseItem* itemp = nodep->itemsp(); itemp; itemp=itemp->nextp()->castCaseItem()) {
 	    for (AstNode* icondp = itemp->condsp(); icondp!=NULL; icondp=icondp->nextp()) {
 		if (icondp->width() > width) width = icondp->width();
+		if (icondp->isDouble()) opaque = true;
 		if (!icondp->castConst()) width = CASE_BARF;  // Can't parse; not a constant
 		m_caseItems++;
 	    }
 	}
 	m_caseWidth = width;
-	if (width==0 || width > CASE_OVERLAP_WIDTH) {
+	if (width==0 || width > CASE_OVERLAP_WIDTH || opaque) {
 	    m_caseNoOverlapsAllCovered = false;
 	    return false;	// Too wide for analysis
 	}
@@ -348,7 +350,9 @@ private:
 			and1p = cexprp->cloneTree(false);
 			and2p = icondp;
 		    }
-		    AstEq* condp = new AstEq(itemp->fileline(), and1p, and2p);
+		    AstNodeBiop* condp = (and1p->isDouble()
+					  ? (new AstEqD(itemp->fileline(), and1p, and2p))->castNodeBiop()
+					  : (new AstEq(itemp->fileline(), and1p, and2p))->castNodeBiop());
 		    if (!ifexprp) {
 			ifexprp = condp;
 		    } else {
@@ -448,10 +452,10 @@ private:
 	if (isCaseTreeFast(nodep) && v3Global.opt.oCase()) {
 	    // It's a simple priority encoder or complete statement
 	    // we can make a tree of statements to avoid extra comparisons
-	    m_statCaseFast++;
+	    ++m_statCaseFast;
 	    replaceCaseFast(nodep); nodep=NULL;
 	} else {
-	    m_statCaseSlow++;
+	    ++m_statCaseSlow;
 	    replaceCaseComplicated(nodep); nodep=NULL;
 	}
     }

src/V3Case.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Cast.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2004-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2004-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -77,7 +77,7 @@ private:
 	AstNRelinker relinkHandle;
 	nodep->unlinkFrBack(&relinkHandle);
 	//
-	AstCast* castp = new AstCast (nodep->fileline(), nodep, needsize);
+	AstCCast* castp = new AstCCast (nodep->fileline(), nodep, needsize);
 	castp->width(needsize, nodep->widthMin());
 	relinkHandle.relink(castp);
 	//if (debug()>8) castp->dumpTree(cout,"-castins: ");
@@ -97,13 +97,13 @@ private:
 	    insertCast(nodep, castSize(nodep->backp()));
 	}
     }
-    void insureLower32Cast(AstCast* nodep) {
+    void insureLower32Cast(AstCCast* nodep) {
 	// If we have uint64 = CAST(uint64(x)) then the upcasting
 	// really needs to be CAST(uint64(CAST(uint32(x))).
 	// Otherwise a (uint64)(a>b) would return wrong value, as
 	// less than has undeterministic signedness.
 	if (nodep->isQuad() && !nodep->lhsp()->isQuad()
-	    && !nodep->lhsp()->castCast()) {
+	    && !nodep->lhsp()->castCCast()) {
 	    insertCast(nodep->lhsp(), VL_WORDSIZE);
 	}
     }
@@ -130,12 +130,12 @@ private:
 	if (nodep->sizeMattersRhs()) insureCast(nodep->rhsp());
 	if (nodep->sizeMattersThs()) insureCast(nodep->thsp());
     }
-    virtual void visit(AstCast* nodep, AstNUser*) {
+    virtual void visit(AstCCast* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
 	insureLower32Cast(nodep);
 	nodep->user1(1);
     }
-    virtual void visit(AstUnaryMin* nodep, AstNUser*) {
+    virtual void visit(AstNegate* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
 	nodep->user1(nodep->lhsp()->user1());
 	if (nodep->lhsp()->widthMin()==1) {
@@ -149,7 +149,7 @@ private:
     }
     virtual void visit(AstVarRef* nodep, AstNUser*) {
 	if (!nodep->lvalue()
-	    && !nodep->backp()->castCast()
+	    && !nodep->backp()->castCCast()
 	    && nodep->backp()->castNodeMath()
 	    && nodep->backp()->width()
 	    && castSize(nodep) != castSize(nodep->varp())) {

src/V3Cast.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2004-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2004-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Cdc.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -46,6 +46,8 @@
 #include "V3EmitV.h"
 #include "V3File.h"
 
+#define CDC_WEIGHT_ASYNC	0x1000	// Weight for edges that feed async logic
+
 //######################################################################
 
 class CdcBaseVisitor : public AstNVisitor {
@@ -65,9 +67,9 @@ class CdcEitherVertex : public V3GraphVertex {
     AstNode*	m_nodep;
     AstSenTree*	m_srcDomainp;
     AstSenTree*	m_dstDomainp;
-    bool	m_srcDomainSet;
+    bool	m_srcDomainSet:1;
-    bool	m_dstDomainSet;
+    bool	m_dstDomainSet:1;
-    bool	m_asyncPath;
+    bool	m_asyncPath:1;
 public:
     CdcEitherVertex(V3Graph* graphp, AstScope* scopep, AstNode* nodep)
 	: V3GraphVertex(graphp), m_scopep(scopep), m_nodep(nodep)
@@ -109,11 +111,12 @@ public:
 };
 
 class CdcLogicVertex : public CdcEitherVertex {
-    bool	m_hazard;
+    bool	m_hazard:1;
-    bool	m_isFlop;
+    bool	m_isFlop:1;
 public:
     CdcLogicVertex(V3Graph* graphp, AstScope* scopep, AstNode* nodep, AstSenTree* sensenodep)
-	: CdcEitherVertex(graphp,scopep,nodep), m_hazard(false), m_isFlop(false)
+	: CdcEitherVertex(graphp,scopep,nodep)
+	, m_hazard(false), m_isFlop(false)
 	{ srcDomainp(sensenodep); dstDomainp(sensenodep); }
     virtual ~CdcLogicVertex() {}
     // Accessors
@@ -132,7 +135,7 @@ class CdcDumpVisitor : public CdcBaseVisitor {
 private:
     // NODE STATE
     //Entire netlist:
-    // {statement}Node::user3p	-> bool, indicating not hazard
+    // {statement}Node::user3	-> bool, indicating not hazard
     ofstream*		m_ofp;		// Output file
     string		m_prefix;
 
@@ -290,9 +293,12 @@ private:
     void setNodeHazard(AstNode* nodep) {
 	// Need to not clear if warnings are off (rather than when report it)
 	// as bypassing this warning may turn up another path that isn't warning off'ed.
+	// We can't modifyWarnOff here, as one instantiation might not be an issue until we find a hitting flop
+	// Furthermore, a module like a "Or" module would only get flagged once,
+	// even though the signals feeding it are radically different.
 	if (!m_domainp || m_domainp->hasCombo()) { // Source flop logic in a posedge block is OK for reset (not async though)
 	    if (m_logicVertexp && !nodep->fileline()->warnIsOff(V3ErrorCode::CDCRSTLOGIC)) {
-		UINFO(9,"Set hazard "<<nodep<<endl);
+		UINFO(8,"Set hazard "<<nodep<<endl);
 		m_logicVertexp->setHazard(nodep);
 	    }
 	}
@@ -310,7 +316,9 @@ private:
 	UINFO(3,__FUNCTION__<<": "<<endl);
 	//if (debug()>6) m_graph.dump();
 	if (debug()>6) m_graph.dumpDotFilePrefixed("cdc_pre");
-	m_graph.removeRedundantEdgesSum(&V3GraphEdge::followAlwaysTrue);
+	//
+	m_graph.removeRedundantEdges(&V3GraphEdge::followAlwaysTrue);  // This will MAX across edge weights
+	//
 	m_graph.dumpDotFilePrefixed("cdc_simp");
 	//
 	analyzeReset();
@@ -335,7 +343,7 @@ private:
 	    if (CdcVarVertex* vvertexp = dynamic_cast<CdcVarVertex*>(itp)) {
 		if (vvertexp->cntAsyncRst()) {
 		    m_userGeneration++;  // Effectively a userClearVertices()
-		    UINFO(9, "   Trace One async: "<<vvertexp<<endl);
+		    UINFO(8, "   Trace One async: "<<vvertexp<<endl);
 		    // Twice, as we need to detect, then propagate
 		    CdcEitherVertex* markp = traceAsyncRecurse(vvertexp, false);
 		    if (markp) { // Mark is non-NULL if something bad on this path
@@ -351,7 +359,8 @@ private:
     }
 
     CdcEitherVertex* traceAsyncRecurse(CdcEitherVertex* vertexp, bool mark) {
-	// Return vertex of any hazardous stuff attached, or NULL if OK
+	// First pass: Return vertex of any hazardous stuff attached, or NULL if OK
+	// If first pass returns true, second pass calls asyncPath() on appropriate nodes
 	if (vertexp->user()>=m_userGeneration) return false;   // Processed - prevent loop
 	vertexp->user(m_userGeneration);
 
@@ -406,12 +415,15 @@ private:
 	    CdcEitherVertex* eToVertexp = (CdcEitherVertex*)edgep->top();
 	    if (!eToVertexp) targetp = eToVertexp;
 	    if (CdcLogicVertex* vvertexp = dynamic_cast<CdcLogicVertex*>(eToVertexp)) {
-		if (vvertexp->isFlop()) {
+		if (vvertexp->isFlop()  // IE the target flop that is upsetting us
+		    && edgep->weight() >= CDC_WEIGHT_ASYNC) {  // And this signal feeds an async reset line
 		    targetp = eToVertexp;
+		    //UINFO(9," targetasync  "<<targetp->name()<<" "<<" from "<<vertexp->name()<<endl);
 		    break;
 		}
 	    }  // else it might be random logic that's not relevant
 	}
+	//UINFO(9," finalflop  "<<targetp->name()<<" "<<targetp->nodep()->fileline()<<endl);
 	warnAndFile(markp->nodep(),V3ErrorCode::CDCRSTLOGIC,"Logic in path that feeds async reset, via signal: "+nodep->prettyName());
 	dumpAsyncRecurse(targetp, "", "   ",0);
     }
@@ -464,6 +476,12 @@ private:
 
     void edgeReport() {
 	// Make report of all signal names and what clock edges they have
+	//
+	// Due to flattening, many interesting direct-connect signals are
+	// lost, so we can't make a report showing I/Os for a low level
+	// module.  Disabling flattening though makes us consider each
+	// signal in it's own unique clock domain.
+
 	UINFO(3,__FUNCTION__<<": "<<endl);
 
 	// Trace all sources and sinks
@@ -493,6 +511,10 @@ private:
 
 		    ostringstream os;
 		    os.setf(ios::left);
+		    // Module name - doesn't work due to flattening having lost the original
+		    // so we assume the modulename matches the filebasename
+		    string fname = vvertexp->varScp()->fileline()->filebasename() + ":";
+		    os<<"  "<<setw(20)<<fname;
 		    os<<"  "<<setw(8)<<whatp;
 		    os<<"  "<<setw(40)<<vvertexp->varScp()->prettyName();
 		    os<<"  SRC=";
@@ -613,8 +635,9 @@ private:
 	    if (!varscp) nodep->v3fatalSrc("Var didn't get varscoped in V3Scope.cpp\n");
 	    CdcVarVertex* varvertexp = makeVarVertex(varscp);
 	    UINFO(5," VARREF to "<<varscp<<endl);
-	    // We use weight of one; if we ref the var more than once, when we simplify,
+	    // We use weight of one for normal edges,
-	    // the weight will increase
+	    // Weight of CDC_WEIGHT_ASYNC to indicate feeds async (for reporting)
+	    // When simplify we'll take the MAX weight
 	    if (nodep->lvalue()) {
 		new V3GraphEdge(&m_graph, m_logicVertexp, varvertexp, 1);
 		if (m_inDly) {
@@ -623,7 +646,13 @@ private:
 		    varvertexp->srcDomainSet(true);
 		}
 	    } else {
-		new V3GraphEdge(&m_graph, varvertexp, m_logicVertexp, 1);
+		if (varvertexp->cntAsyncRst()) {
+		    //UINFO(9," edgeasync "<<varvertexp->name()<<" to "<<m_logicVertexp<<endl);
+		    new V3GraphEdge(&m_graph, varvertexp, m_logicVertexp, CDC_WEIGHT_ASYNC);
+		} else {
+		    //UINFO(9," edgena    "<<varvertexp->name()<<" to "<<m_logicVertexp<<endl);
+		    new V3GraphEdge(&m_graph, varvertexp, m_logicVertexp, 1);
+		}
 	    }
 	}
     }
@@ -720,7 +749,7 @@ public:
 
 	nodep->accept(*this);
 	analyze();
-	//edgeReport();  // Not useful at the moment
+	if (debug()>=1) edgeReport();  // Not useful to users at the moment
 
 	if (0) { *m_ofp<<"\nDBG-test-dumper\n"; V3EmitV::verilogPrefixedTree(nodep, *m_ofp, "DBG ",40,NULL,true); *m_ofp<<endl; }
     }

src/V3Cdc.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Changed.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Changed.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Clean.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Clean.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3ClkGater.cpp

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2008-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2008-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -315,6 +315,7 @@ public:
 	m_exprp = exprp;
 	m_original = original;
 	m_state = STATE_UNKNOWN;
+	m_cloning = false;
 	if (debug()>=9) nodep->dumpTree(cout,"  GateBodyIn:  ");
 	nodep->bodysp()->iterateAndNext(*this);
 	if (debug()>=9) nodep->dumpTree(cout,"  GateBodyOut: ");
@@ -696,7 +697,7 @@ class GaterVisitor : public GaterBaseVisitor {
 	// Blow old statements from new body
 	GaterBodyVisitor(alwp,exprp,false);
 
-	m_statGaters++;
+	++m_statGaters;
 	if (debug()>=9) alwp->dumpTree(cout,"  new: ");
     }
 

src/V3ClkGater.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Clock.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Clock.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Combine.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -70,8 +70,8 @@ protected:
     virtual ~CombBaseVisitor() {}
 
     //***** optimization levels
-    bool emptyFunctionDeletion() { return true; }
+    static bool emptyFunctionDeletion() { return true; }
-    bool duplicateFunctionCombine() { return true; }
+    static bool duplicateFunctionCombine() { return true; }
     // Note this is disabled, it still needed work
     // Also repair it for DPI functions; when make __common need to insure proper
     // flags get inherited from the old to new AstCFunc, and that AstText doesn't
@@ -146,7 +146,9 @@ private:
     }
 public:
     // CONSTRUCTORS
-    CombCallVisitor() {}
+    CombCallVisitor() {
+	m_find = false;
+    }
     virtual ~CombCallVisitor() {}
     void main(AstNetlist* nodep) {
 	nodep->accept(*this);
@@ -257,7 +259,7 @@ private:
 	UINFO(5,"     DupFunc "<<hex<<V3Hash(newfuncp->user4p())<<" "<<newfuncp<<endl);
 	UINFO(5,"         and "<<hex<<V3Hash(oldfuncp->user4p())<<" "<<oldfuncp<<endl);
 	// Mark user3p on entire old tree, so we don't process it more
-	m_statCombs++;
+	++m_statCombs;
 	CombMarkVisitor visitor(oldfuncp);
 	m_call.replaceFunc(oldfuncp, newfuncp);
 	oldfuncp->unlinkFrBack();

src/V3Combine.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Config.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2010-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2010-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -60,7 +60,8 @@ class V3ConfigIgnores {
     IgnLines::const_iterator m_lastIt;	// Point with next linenumber > current line number
     IgnLines::const_iterator m_lastEnd;	// Point with end()
 
-    IgnFiles		m_ignFiles;	// Ignores for each filename
+    IgnFiles		m_ignWilds;	// Ignores for each wildcarded filename
+    IgnFiles		m_ignFiles;	// Ignores for each non-wildcarded filename
     
     static V3ConfigIgnores s_singleton;	// Singleton (not via local static, as that's slow)
 
@@ -68,13 +69,13 @@ class V3ConfigIgnores {
     ~V3ConfigIgnores() {}
 
     // METHODS
-    inline IgnLines* findLines(const string& filename) {
+    inline IgnLines* findWilds(const string& wildname) {
-	IgnFiles::iterator it = m_ignFiles.find(filename);
+	IgnFiles::iterator it = m_ignWilds.find(wildname);
-	if (it != m_ignFiles.end()) {
+	if (it != m_ignWilds.end()) {
 	    return &(it->second);
 	} else {
-	    m_ignFiles.insert(make_pair(filename, IgnLines()));
+	    m_ignWilds.insert(make_pair(wildname, IgnLines()));
-	    it = m_ignFiles.find(filename);
+	    it = m_ignWilds.find(wildname);
 	    return &(it->second);
 	}
     }
@@ -82,23 +83,35 @@ class V3ConfigIgnores {
 	// Given a filename, find all wildcard matches against it and build
 	// hash with the specific filename.  This avoids having to wildmatch
 	// more than once against any filename.
-	IgnLines* linesp = findLines(filename);
+	IgnFiles::iterator it = m_ignFiles.find(filename);
-	m_lastIt = linesp->begin();
+	if (it == m_ignFiles.end()) {
-	m_lastEnd = linesp->end();
+	    // Haven't seen this filename before
+	    m_ignFiles.insert(make_pair(filename, IgnLines()));
+	    it = m_ignFiles.find(filename);
+	    // Make new list for this file of all matches
+	    for (IgnFiles::iterator fnit = m_ignWilds.begin(); fnit != m_ignWilds.end(); ++fnit) {
+		if (V3Options::wildmatch(filename.c_str(), fnit->first.c_str())) {
+		    for (IgnLines::iterator lit = fnit->second.begin(); lit != fnit->second.end(); ++lit) {
+			it->second.insert(*lit);
+		    }
+		}
+	    }
+	}
+	m_lastIt = it->second.begin();
+	m_lastEnd = it->second.end();
     }
 
 public:
     inline static V3ConfigIgnores& singleton() { return s_singleton; }
 
-    void addIgnore(V3ErrorCode code, string filename, int lineno, bool on) {
+    void addIgnore(V3ErrorCode code, string wildname, int lineno, bool on) {
 	// Insert
-	IgnLines* linesp = findLines(filename);
+	IgnLines* linesp = findWilds(wildname);
-	UINFO(9,"config addIgnore "<<filename<<":"<<lineno<<", "<<code<<", "<<on<<endl); 
+	UINFO(9,"config addIgnore "<<wildname<<":"<<lineno<<", "<<code<<", "<<on<<endl);
 	linesp->insert(V3ConfigLine(code, lineno, on));
-	if (m_lastFilename == filename) {
+	// Flush the match cache, due to a change in the rules.
-	    // Flush the match cache, due to a change in the rules.
+	m_ignFiles.clear();
-	    m_lastFilename = " ";
+	m_lastFilename = " ";
-	}
     }
     inline void applyIgnores(FileLine* filelinep) {
 	// HOT routine, called each parsed token line

src/V3Config.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2010-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2010-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Const.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -37,7 +37,6 @@
 #include "V3Const.h"
 #include "V3Ast.h"
 #include "V3Width.h"
-#include "V3Signed.h"
 #include "V3Simulate.h"
 
 //######################################################################
@@ -93,7 +92,7 @@ public:
 class ConstVisitor : public AstNVisitor {
 private:
     // NODE STATE
-    // ** only when m_warn/m_expensive is set.  If state is needed other times,
+    // ** only when m_warn/m_doExpensive is set.  If state is needed other times,
     // ** must track down everywhere V3Const is called and make sure no overlaps.
     // AstVar::user4p		-> Used by ConstVarMarkVisitor/ConstVarFindVisitor
     // AstJumpLabel::user4	-> bool.  Set when AstJumpGo uses this label
@@ -103,8 +102,9 @@ private:
     bool	m_required;	// If true, must become a constant
     bool	m_wremove;	// Inside scope, no assignw removal
     bool	m_warn;		// Output warnings
-    bool	m_cpp;		// C++ conversions only
+    bool	m_doExpensive;	// Enable computationally expensive optimizations
-    bool	m_expensive;	// Enable computationally expensive optimizations
+    bool	m_doNConst;	// Enable non-constant-child simplifications
+    bool	m_doV;		// Verilog, not C++ conversion
     AstNodeModule*	m_modp;		// Current module
     AstNode*	m_scopep;	// Current scope
 
@@ -289,13 +289,61 @@ private:
 	// SEL(EXTEND(any,width,...),(width-1),0) -> ...
 	// Since select's return unsigned, this is always an extend
 	AstExtend* extendp = nodep->fromp()->castExtend();
-	return (!m_cpp
+	if (!(m_doV
-		&& extendp
+	      && extendp
-		&& nodep->lsbp()->castConst()
+	      && nodep->lsbp()->castConst()
-		&& nodep->widthp()->castConst()
+	      && nodep->widthp()->castConst()
-		&& nodep->lsbConst()==0
+	      && nodep->lsbConst()==0
-		&& (int)nodep->widthConst()==extendp->lhsp()->width()
+	      && (int)nodep->widthConst()==extendp->lhsp()->width()
-		);
+		)) return false;
+	replaceWChild(nodep, extendp->lhsp()); nodep=NULL;
+	return true;
+    }
+    bool operandSelBiLower(AstSel* nodep) {
+	// SEL(ADD(a,b),(width-1),0) -> ADD(SEL(a),SEL(b))
+	// Add or any operation which doesn't care if we discard top bits
+	AstNodeBiop* bip = nodep->fromp()->castNodeBiop();
+	if (!(m_doV
+	      && bip
+	      && nodep->lsbp()->castConst()
+	      && nodep->widthp()->castConst()
+	      && nodep->lsbConst()==0
+		)) return false;
+	if (debug()>=9) nodep->dumpTree(cout,"SEL(BI)-in:");
+	AstNode* bilhsp = bip->lhsp()->unlinkFrBack();
+	AstNode* birhsp = bip->rhsp()->unlinkFrBack();
+	bip->lhsp(new AstSel(nodep->fileline(), bilhsp, 0, nodep->widthConst()));
+	bip->rhsp(new AstSel(nodep->fileline(), birhsp, 0, nodep->widthConst()));
+	if (debug()>=9) bip->dumpTree(cout,"SEL(BI)-ou:");
+	replaceWChild(nodep, bip); nodep=NULL;
+	return true;
+    }
+
+    bool operandBiExtendConst(AstNodeBiop* nodep) {
+	// Loop unrolling likes standalone compares
+	// EQ(EXTEND(xx{width3}), const{width32}) -> EQ(xx{3},const{3})
+	// Beware that the constant must have zero bits (+ 1 if signed) or compare
+	// would be incorrect
+	AstExtend* extendp = nodep->lhsp()->castExtend();
+	if (!extendp) return false;
+	AstNode* smallerp = extendp->lhsp();
+	int subsize = smallerp->width();
+	AstConst* constp = nodep->rhsp()->castConst();
+	if (!constp) return false;
+	if (!constp->num().isBitsZero(constp->width()-1, subsize)) return false;
+	//
+	if (debug()>=9) nodep->dumpTree(cout,"BI(EXTEND)-in:");
+	smallerp->unlinkFrBack();
+	extendp->unlinkFrBack()->deleteTree();  // aka nodep->lhsp.
+	nodep->lhsp(smallerp);
+
+	constp->unlinkFrBack();
+	V3Number num (constp->fileline(), subsize);
+	num.opAssign(constp->num());
+	nodep->rhsp(new AstConst(constp->fileline(), num));
+	constp->deleteTree();  constp=NULL;
+	if (debug()>=9) nodep->dumpTree(cout,"BI(EXTEND)-ou:");
+	return true;
     }
 
     AstNode* afterComment(AstNode* nodep) {
@@ -724,7 +772,7 @@ private:
 		return true;
 	    }
 	}
-	else if (!m_cpp && nodep->lhsp()->castConcat()) {
+	else if (m_doV && nodep->lhsp()->castConcat()) {
 	    bool need_temp = false;
 	    if (m_warn && !nodep->castAssignDly()) {  // Is same var on LHS and RHS?
 		// Note only do this (need user4) when m_warn, which is
@@ -773,7 +821,9 @@ private:
 		AstNodeAssign* asn2ap=nodep->cloneType(lc2p, sel2p)->castNodeAssign();
 		asn1ap->width(msb1-lsb1+1,msb1-lsb1+1);
 		asn2ap->width(msb2-lsb2+1,msb2-lsb2+1);
+		// cppcheck-suppress nullPointer  // addNext deals with it
 		newp = newp->addNext(asn1ap);
+		// cppcheck-suppress nullPointer  // addNext deals with it
 		newp = newp->addNext(asn2ap);
 	    } else {
 		if (!m_modp) nodep->v3fatalSrc("Not under module");
@@ -804,12 +854,16 @@ private:
 		asn2ap->width(msb2-lsb2+1,msb2-lsb2+1);
 		asn2bp->width(msb2-lsb2+1,msb2-lsb2+1);
 		// This order matters
+		// cppcheck-suppress nullPointer  // addNext deals with it
 		newp = newp->addNext(asn1ap);
+		// cppcheck-suppress nullPointer  // addNext deals with it
 		newp = newp->addNext(asn2ap);
+		// cppcheck-suppress nullPointer  // addNext deals with it
 		newp = newp->addNext(asn1bp);
+		// cppcheck-suppress nullPointer  // addNext deals with it
 		newp = newp->addNext(asn2bp);
 	    }
-	    if (debug()>=9) newp->dumpTreeAndNext(cout,"     _new: ");
+	    if (debug()>=9 && newp) newp->dumpTreeAndNext(cout,"     _new: ");
 	    nodep->addNextHere(newp);
 	    // Cleanup
 	    nodep->unlinkFrBack()->deleteTree(); nodep=NULL;
@@ -855,10 +909,10 @@ private:
 	// Run it - may be unoptimizable due to large for loop, etc
 	simvis.mainParamEmulate(nodep);
 	if (!simvis.optimizable()) {
-		    AstNode* errorp = simvis.whyNotNodep(); if (!errorp) errorp = nodep;
+	    AstNode* errorp = simvis.whyNotNodep(); if (!errorp) errorp = nodep;
 	    nodep->v3error("Expecting expression to be constant, but can't determine constant for "
 			   <<nodep->prettyTypeName()<<endl
-			   <<V3Error::msgPrefix()<<errorp->fileline()<<"... Location of non-constant "
+			   <<V3Error::msgPrefix(V3ErrorCode::EC_ERROR,false)<<errorp->fileline()<<"... Location of non-constant "
 			   <<errorp->prettyTypeName()<<": "<<simvis.whyNotMessage());
 	    replaceZero(nodep); nodep=NULL;
 	} else {
@@ -1060,16 +1114,50 @@ private:
 	nodep->replaceWith(newp); nodep->deleteTree(); nodep=NULL;
     }
 
+    void replaceSelIntoBiop(AstSel* nodep) {
+	// SEL(BUFIF1(a,b),1,bit) => BUFIF1(SEL(a,1,bit),SEL(b,1,bit))
+	AstNodeBiop* fromp = nodep->fromp()->unlinkFrBack()->castNodeBiop();
+	if (!fromp) nodep->v3fatalSrc("Called on non biop");
+	AstNode* lsbp = nodep->lsbp()->unlinkFrBack();
+	AstNode* widthp = nodep->widthp()->unlinkFrBack();
+	//
+	AstNode* bilhsp = fromp->lhsp()->unlinkFrBack();
+	AstNode* birhsp = fromp->rhsp()->unlinkFrBack();
+	//
+	fromp->lhsp(new AstSel(nodep->fileline(),
+			       bilhsp, lsbp->cloneTree(true), widthp->cloneTree(true)));
+	fromp->rhsp(new AstSel(nodep->fileline(),
+			       birhsp, lsbp, widthp));
+	fromp->widthSignedFrom(nodep);
+	nodep->replaceWith(fromp); nodep->deleteTree(); nodep=NULL;
+    }
+    void replaceSelIntoUniop(AstSel* nodep) {
+	// SEL(NOT(a),1,bit) => NOT(SEL(a,bit))
+	AstNodeUniop* fromp = nodep->fromp()->unlinkFrBack()->castNodeUniop();
+	if (!fromp) nodep->v3fatalSrc("Called on non biop");
+	AstNode* lsbp = nodep->lsbp()->unlinkFrBack();
+	AstNode* widthp = nodep->widthp()->unlinkFrBack();
+	//
+	AstNode* bilhsp = fromp->lhsp()->unlinkFrBack();
+	//
+	fromp->lhsp(new AstSel(nodep->fileline(),
+			       bilhsp, lsbp->cloneTree(true), widthp->cloneTree(true)));
+	fromp->widthSignedFrom(nodep);
+	nodep->replaceWith(fromp); nodep->deleteTree(); nodep=NULL;
+    }
+
     virtual void visit(AstVarRef* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
 	if (!nodep->varp()) nodep->v3fatalSrc("Not linked");
 	bool did=false;
-	if (!m_cpp && nodep->varp()->hasSimpleInit() && !nodep->backp()->castAttrOf()) {
+	if (m_doV && nodep->varp()->hasSimpleInit() && !nodep->backp()->castAttrOf()) {
 	    //if (debug()) nodep->varp()->valuep()->dumpTree(cout,"  visitvaref: ");
 	    nodep->varp()->valuep()->iterateAndNext(*this);
 	    if (operandConst(nodep->varp()->valuep())
 		&& !nodep->lvalue()
-		&& ((v3Global.opt.oConst() && !m_params // Can reduce constant wires into equations
+		&& ((!m_params // Can reduce constant wires into equations
+		     && m_doNConst
+		     && v3Global.opt.oConst()
 		     && !nodep->varp()->isSigPublic())
 		    || nodep->varp()->isParam())) {
 		AstConst* constp = nodep->varp()->valuep()->castConst();
@@ -1121,8 +1209,9 @@ private:
     }
     virtual void visit(AstSenItem* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
-	if (nodep->sensp()->castConst()
+	if (m_doNConst
-	    || (nodep->varrefp() && nodep->varrefp()->varp()->isParam())) {
+	    && (nodep->sensp()->castConst()
+		|| (nodep->varrefp() && nodep->varrefp()->varp()->isParam()))) {
 	    // Constants in sensitivity lists may be removed (we'll simplify later)
 	    if (nodep->isClocked()) {  // A constant can never get a pos/negexge
 		if (onlySenItemInSenTree(nodep)) {
@@ -1135,7 +1224,7 @@ private:
 		nodep->replaceWith(new AstSenItem(nodep->fileline(), AstSenItem::Combo()));
 		nodep->deleteTree(); nodep=NULL;
 	    }
-	} else if (nodep->sensp()->castNot()) {
+	} else if (m_doNConst && nodep->sensp()->castNot()) {
 	    // V3Gate may propagate NOTs into clocks... Just deal with it
 	    AstNode* sensp = nodep->sensp();
 	    AstNode* lastSensp = sensp;
@@ -1202,7 +1291,7 @@ private:
 
     virtual void visit(AstSenTree* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
-	if (m_expensive) {
+	if (m_doExpensive) {
 	    //cout<<endl; nodep->dumpTree(cout,"ssin: ");
 	    // Optimize ideas for the future:
 	    //   SENTREE(... SENGATE(x,a), SENGATE(SENITEM(x),b) ...)  => SENGATE(x,OR(a,b))
@@ -1305,22 +1394,21 @@ private:
     // Zero elimination
     virtual void visit(AstNodeAssign* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
-	replaceNodeAssign(nodep);
+	if (m_doNConst && replaceNodeAssign(nodep)) return;
     }
     virtual void visit(AstAssignAlias* nodep, AstNUser*) {
 	// Don't perform any optimizations, keep the alias around
     }
     virtual void visit(AstAssignW* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
-	if (replaceNodeAssign(nodep)) return;
+	if (m_doNConst && replaceNodeAssign(nodep)) return;
 	AstNodeVarRef* varrefp = nodep->lhsp()->castVarRef();  // Not VarXRef, as different refs may set different values to each hierarchy
-	if (m_wremove
+	if (m_wremove && !m_params && m_doNConst
 	    && m_modp && operandConst(nodep->rhsp())
 	    && !nodep->rhsp()->castConst()->num().isFourState()
 	    && varrefp		// Don't do messes with BITREFs/ARRAYREFs
 	    && !varrefp->varp()->valuep()  // Not already constified
-	    && !varrefp->varScopep()	// Not scoped (or each scope may have different initial value)
+	    && !varrefp->varScopep()) {	// Not scoped (or each scope may have different initial value)
-	    && !m_params) {
 	    // ASSIGNW (VARREF, const) -> INITIAL ( ASSIGN (VARREF, const) )
 	    UINFO(4,"constAssignW "<<nodep<<endl);
 	    // Make a initial assignment
@@ -1340,77 +1428,79 @@ private:
 
     virtual void visit(AstNodeIf* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
-	if (AstConst* constp = nodep->condp()->castConst()) {
+	if (m_doNConst) {
-	    AstNode* keepp = NULL;
+	    if (AstConst* constp = nodep->condp()->castConst()) {
-	    if (constp->isZero()) {
+		AstNode* keepp = NULL;
-		UINFO(4,"IF(0,{any},{x}) => {x}: "<<nodep<<endl);
+		if (constp->isZero()) {
-		keepp = nodep->elsesp();
+		    UINFO(4,"IF(0,{any},{x}) => {x}: "<<nodep<<endl);
-	    } else {
+		    keepp = nodep->elsesp();
-		UINFO(4,"IF(!0,{x},{any}) => {x}: "<<nodep<<endl);
+		} else {
-		keepp = nodep->ifsp();
+		    UINFO(4,"IF(!0,{x},{any}) => {x}: "<<nodep<<endl);
+		    keepp = nodep->ifsp();
+		}
+		if (keepp) {
+		    keepp->unlinkFrBackWithNext();
+		    nodep->replaceWith(keepp);
+		} else {
+		    nodep->unlinkFrBack();
+		}
+		nodep->deleteTree(); nodep=NULL;
 	    }
-	    if (keepp) {
+	    else if (!afterComment(nodep->ifsp()) && !afterComment(nodep->elsesp())) {
-		keepp->unlinkFrBackWithNext();
+		// Empty block, remove it
-		nodep->replaceWith(keepp);
+		// Note if we support more C++ then there might be side effects in the condition itself
-	    } else {
+		nodep->unlinkFrBack()->deleteTree(); nodep=NULL;
-		nodep->unlinkFrBack();
+	    }
+	    else if (!afterComment(nodep->ifsp())) {
+		UINFO(4,"IF({x}) NULL {...} => IF(NOT{x}}: "<<nodep<<endl);
+		AstNode* condp = nodep->condp();
+		AstNode* elsesp = nodep->elsesp();
+		condp->unlinkFrBackWithNext();
+		elsesp->unlinkFrBackWithNext();
+		if (nodep->ifsp()) { nodep->ifsp()->unlinkFrBackWithNext()->deleteTree(); }  // Must have been comment
+		nodep->condp(new AstLogNot(condp->fileline(), condp));  // LogNot, as C++ optimization also possible
+		nodep->addIfsp(elsesp);
+	    }
+	    else if (((nodep->condp()->castNot() && nodep->condp()->width()==1)
+		      || (nodep->condp()->castLogNot()))
+		     && nodep->ifsp() && nodep->elsesp()) {
+		UINFO(4,"IF(NOT {x})  => IF(x) swapped if/else"<<nodep<<endl);
+		AstNode* condp = nodep->condp()->castNot()->lhsp()->unlinkFrBackWithNext();
+		AstNode* ifsp = nodep->ifsp()->unlinkFrBackWithNext();
+		AstNode* elsesp = nodep->elsesp()->unlinkFrBackWithNext();
+		AstIf* ifp = new AstIf(nodep->fileline(), condp, elsesp, ifsp);
+		ifp->branchPred(nodep->branchPred().invert());
+		nodep->replaceWith(ifp);
+		nodep->deleteTree(); nodep=NULL;
+	    }
+	    else if (ifSameAssign(nodep)) {
+		UINFO(4,"IF({a}) ASSIGN({b},{c}) else ASSIGN({b},{d}) => ASSIGN({b}, {a}?{c}:{d})"<<endl);
+		AstNodeAssign* ifp   = nodep->ifsp()->castNodeAssign();
+		AstNodeAssign* elsep = nodep->elsesp()->castNodeAssign();
+		ifp->unlinkFrBack();
+		AstNode* condp = nodep->condp()->unlinkFrBack();
+		AstNode* truep = ifp->rhsp()->unlinkFrBack();
+		AstNode* falsep = elsep->rhsp()->unlinkFrBack();
+		ifp->rhsp(new AstCond(truep->fileline(),
+				      condp, truep, falsep));
+		nodep->replaceWith(ifp);
+		nodep->deleteTree(); nodep=NULL;
+	    }
+	    else if (0	// Disabled, as vpm assertions are faster without due to short-circuiting
+		     && operandIfIf(nodep)) {
+		UINFO(0,"IF({a}) IF({b}) => IF({a} && {b})"<<endl);
+		AstNodeIf* lowerIfp = nodep->ifsp()->castNodeIf();
+		AstNode* condp = nodep->condp()->unlinkFrBack();
+		AstNode* lowerIfsp = lowerIfp->ifsp()->unlinkFrBackWithNext();
+		AstNode* lowerCondp = lowerIfp->condp()->unlinkFrBackWithNext();
+		nodep->condp(new AstLogAnd(lowerIfp->fileline(),
+					   condp, lowerCondp));
+		lowerIfp->replaceWith(lowerIfsp);
+		lowerIfp->deleteTree(); lowerIfp=NULL;
+	    }
+	    else if (operandBoolShift(nodep->condp())) {
+		replaceBoolShift(nodep->condp());
 	    }
-	    nodep->deleteTree(); nodep=NULL;
-	}
-	else if (!afterComment(nodep->ifsp()) && !afterComment(nodep->elsesp())) {
-	    // Empty block, remove it
-	    // Note if we support more C++ then there might be side effects in the condition itself
-	    nodep->unlinkFrBack()->deleteTree(); nodep=NULL;
-	}
-	else if (!afterComment(nodep->ifsp())) {
-	    UINFO(4,"IF({x}) NULL {...} => IF(NOT{x}}: "<<nodep<<endl);
-	    AstNode* condp = nodep->condp();
-	    AstNode* elsesp = nodep->elsesp();
-	    condp->unlinkFrBackWithNext();
-	    elsesp->unlinkFrBackWithNext();
-	    if (nodep->ifsp()) { nodep->ifsp()->unlinkFrBackWithNext()->deleteTree(); }  // Must have been comment
-	    nodep->condp(new AstLogNot(condp->fileline(), condp));  // LogNot, as C++ optimization also possible
-	    nodep->addIfsp(elsesp);
-	}
-	else if (((nodep->condp()->castNot() && nodep->condp()->width()==1)
-		  || (nodep->condp()->castLogNot()))
-		 && nodep->ifsp() && nodep->elsesp()) {
-	    UINFO(4,"IF(NOT {x})  => IF(x) swapped if/else"<<nodep<<endl);
-	    AstNode* condp = nodep->condp()->castNot()->lhsp()->unlinkFrBackWithNext();
-	    AstNode* ifsp = nodep->ifsp()->unlinkFrBackWithNext();
-	    AstNode* elsesp = nodep->elsesp()->unlinkFrBackWithNext();
-	    AstIf* ifp = new AstIf(nodep->fileline(), condp, elsesp, ifsp);
-	    ifp->branchPred(nodep->branchPred().invert());
-	    nodep->replaceWith(ifp);
-	    nodep->deleteTree(); nodep=NULL;
-	}
-	else if (ifSameAssign(nodep)) {
-	    UINFO(4,"IF({a}) ASSIGN({b},{c}) else ASSIGN({b},{d}) => ASSIGN({b}, {a}?{c}:{d})"<<endl);
-	    AstNodeAssign* ifp   = nodep->ifsp()->castNodeAssign();
-	    AstNodeAssign* elsep = nodep->elsesp()->castNodeAssign();
-	    ifp->unlinkFrBack();
-	    AstNode* condp = nodep->condp()->unlinkFrBack();
-	    AstNode* truep = ifp->rhsp()->unlinkFrBack();
-	    AstNode* falsep = elsep->rhsp()->unlinkFrBack();
-	    ifp->rhsp(new AstCond(truep->fileline(),
-				  condp, truep, falsep));
-	    nodep->replaceWith(ifp);
-	    nodep->deleteTree(); nodep=NULL;
-	}
-	else if (0	// Disabled, as vpm assertions are faster without due to short-circuiting
-		 && operandIfIf(nodep)) {
-	    UINFO(0,"IF({a}) IF({b}) => IF({a} && {b})"<<endl);
-	    AstNodeIf* lowerIfp = nodep->ifsp()->castNodeIf();
-	    AstNode* condp = nodep->condp()->unlinkFrBack();
-	    AstNode* lowerIfsp = lowerIfp->ifsp()->unlinkFrBackWithNext();
-	    AstNode* lowerCondp = lowerIfp->condp()->unlinkFrBackWithNext();
-	    nodep->condp(new AstLogAnd(lowerIfp->fileline(),
-				       condp, lowerCondp));
-	    lowerIfp->replaceWith(lowerIfsp);
-	    lowerIfp->deleteTree(); lowerIfp=NULL;
-	}
-	else if (operandBoolShift(nodep->condp())) {
-	    replaceBoolShift(nodep->condp());
 	}
     }
 
@@ -1423,7 +1513,7 @@ private:
 	for (AstNode* argp = nodep->exprsp(); argp; argp=argp->nextp()) {
 	    if (argp->castConst()) { anyconst=true; break; }
 	}
-	if (anyconst) {
+	if (m_doNConst && anyconst) {
 	    //UINFO(9,"  Display in  "<<nodep->text()<<endl);
 	    string dispout = "";
 	    string fmt = "";
@@ -1434,7 +1524,7 @@ private:
 		if (!inPct && ch=='%') {
 		    inPct = true;
 		    fmt = ch;
-		} else if (inPct && isdigit(ch)) {
+		} else if (inPct && (isdigit(ch) || ch=='.')) {
 		    fmt += ch;
 		} else if (inPct) {
 		    inPct = false;
@@ -1450,7 +1540,7 @@ private:
 				UINFO(9,"     DispConst: "<<fmt<<" -> "<<out<<"  for "<<argp<<endl);
 				{   // fmt = out w/ replace % with %% as it must be literal.
 				    fmt = "";
-				    for (string::iterator pos = out.begin(); pos != out.end(); pos++) {
+				    for (string::iterator pos = out.begin(); pos != out.end(); ++pos) {
 					if (*pos == '%') fmt += '%';
 					fmt += *pos;
 				    }
@@ -1486,14 +1576,16 @@ private:
 
     virtual void visit(AstWhile* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
-	if (nodep->condp()->isZero()) {
+	if (m_doNConst) {
-	    UINFO(4,"WHILE(0) => nop "<<nodep<<endl);
+	    if (nodep->condp()->isZero()) {
-	    if (nodep->precondsp()) nodep->replaceWith(nodep->precondsp());
+		UINFO(4,"WHILE(0) => nop "<<nodep<<endl);
-	    else nodep->unlinkFrBack();
+		if (nodep->precondsp()) nodep->replaceWith(nodep->precondsp());
-	    nodep->deleteTree(); nodep=NULL;
+		else nodep->unlinkFrBack();
-	}
+		nodep->deleteTree(); nodep=NULL;
-	else if (operandBoolShift(nodep->condp())) {
+	    }
-	    replaceBoolShift(nodep->condp());
+	    else if (operandBoolShift(nodep->condp())) {
+		replaceBoolShift(nodep->condp());
+	    }
 	}
     }
 
@@ -1501,12 +1593,20 @@ private:
     // If output of a presel didn't get consted, chances are V3Param didn't visit properly
     virtual void visit(AstNodePreSel* nodep, AstNUser*) {}
 
+    // Ignored, can eliminate early
+    virtual void visit(AstSysIgnore* nodep, AstNUser*) {
+	nodep->iterateChildren(*this);
+	if (m_doNConst) {
+	    nodep->unlinkFrBack()->deleteTree(); nodep=NULL;
+	}
+    }
+
     //-----
     // Jump elimination
 
     virtual void visit(AstJumpGo* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
-	if (m_expensive) { nodep->labelp()->user4(true); }
+	if (m_doExpensive) { nodep->labelp()->user4(true); }
     }
 
     virtual void visit(AstJumpLabel* nodep, AstNUser*) {
@@ -1515,7 +1615,7 @@ private:
 	// Note this assumes all AstJumpGos are underneath the given label; V3Broken asserts this
 	nodep->iterateChildren(*this);
 	// AstJumpGo's below here that point to this node will set user4
-	if (m_expensive && !nodep->user4()) {
+	if (m_doExpensive && !nodep->user4()) {
 	    UINFO(4,"JUMPLABEL => unused "<<nodep<<endl);
 	    AstNode* underp = NULL;
 	    if (nodep->stmtsp()) underp = nodep->stmtsp()->unlinkFrBackWithNext();
@@ -1546,78 +1646,81 @@ private:
 
     // Lint Checks
     //    v--- *1* These ops are always first, as we warn before replacing
-    //    v--- *V* This op is a verilog op, ignore when in m_cpp mode
+    //    v--- *V* This op is a verilog op, only in m_doV mode
+    //    v--- *C* This op works on all constant children, allowed in m_doConst mode
     TREEOP1("AstSel{warnSelect(nodep)}",	"NEVER");
     // Generic constants on both side.  Do this first to avoid other replacements
-    TREEOP("AstNodeBiop {$lhsp.castConst, $rhsp.castConst}",  "replaceConst(nodep)");
+    TREEOPC("AstNodeBiop {$lhsp.castConst, $rhsp.castConst}",  "replaceConst(nodep)");
-    TREEOP("AstNodeUniop{$lhsp.castConst, !nodep->isOpaque()}",  "replaceConst(nodep)");
+    TREEOPC("AstNodeUniop{$lhsp.castConst, !nodep->isOpaque()}",  "replaceConst(nodep)");
     // Zero on one side or the other
-    TREEOP("AstAdd   {$lhsp.isZero, $rhsp}",	"replaceWRhs(nodep)");
+    TREEOP ("AstAdd   {$lhsp.isZero, $rhsp}",	"replaceWRhs(nodep)");
-    TREEOP("AstAnd   {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstAnd   {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstLogAnd{$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstLogAnd{$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstLogOr {$lhsp.isZero, $rhsp}",	"replaceWRhs(nodep)");
+    TREEOP ("AstLogOr {$lhsp.isZero, $rhsp}",	"replaceWRhs(nodep)");
-    TREEOP("AstDiv   {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstDiv   {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstDivS  {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstDivS  {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstMul   {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstMul   {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstMulS  {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstMulS  {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstPow   {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstPow   {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstPowS  {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstPowS  {$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstOr    {$lhsp.isZero, $rhsp}",	"replaceWRhs(nodep)");
+    TREEOP ("AstOr    {$lhsp.isZero, $rhsp}",	"replaceWRhs(nodep)");
-    TREEOP("AstShiftL{$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstShiftL{$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstShiftR{$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstShiftR{$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstShiftRS{$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
+    TREEOP ("AstShiftRS{$lhsp.isZero, $rhsp}",	"replaceZero(nodep)");
-    TREEOP("AstXor   {$lhsp.isZero, $rhsp}",	"replaceWRhs(nodep)");
+    TREEOP ("AstXor   {$lhsp.isZero, $rhsp}",	"replaceWRhs(nodep)");
-    TREEOP("AstXnor  {$lhsp.isZero, $rhsp}",	"AstNot{$rhsp}");
+    TREEOP ("AstXnor  {$lhsp.isZero, $rhsp}",	"AstNot{$rhsp}");
-    TREEOP("AstSub   {$lhsp.isZero, $rhsp}",	"AstUnaryMin{$rhsp}");
+    TREEOP ("AstSub   {$lhsp.isZero, $rhsp}",	"AstNegate{$rhsp}");
-    TREEOP("AstAdd   {$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
+    TREEOP ("AstAdd   {$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
-    TREEOP("AstAnd   {$lhsp, $rhsp.isZero}",	"replaceZero(nodep)");
+    TREEOP ("AstAnd   {$lhsp, $rhsp.isZero}",	"replaceZero(nodep)");
-    TREEOP("AstLogAnd{$lhsp, $rhsp.isZero}",	"replaceZero(nodep)");
+    TREEOP ("AstLogAnd{$lhsp, $rhsp.isZero}",	"replaceZero(nodep)");
-    TREEOP("AstLogOr {$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
+    TREEOP ("AstLogOr {$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
-    TREEOP("AstMul   {$lhsp, $rhsp.isZero}",	"replaceZero(nodep)");
+    TREEOP ("AstMul   {$lhsp, $rhsp.isZero}",	"replaceZero(nodep)");
-    TREEOP("AstMulS  {$lhsp, $rhsp.isZero}",	"replaceZero(nodep)");
+    TREEOP ("AstMulS  {$lhsp, $rhsp.isZero}",	"replaceZero(nodep)");
-    TREEOP("AstOr    {$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
+    TREEOP ("AstOr    {$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
-    TREEOP("AstShiftL{$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
+    TREEOP ("AstShiftL{$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
-    TREEOP("AstShiftR{$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
+    TREEOP ("AstShiftR{$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
-    TREEOP("AstShiftRS{$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
+    TREEOP ("AstShiftRS{$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
-    TREEOP("AstSub   {$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
+    TREEOP ("AstSub   {$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
-    TREEOP("AstXor   {$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
+    TREEOP ("AstXor   {$lhsp, $rhsp.isZero}",	"replaceWLhs(nodep)");
-    TREEOP("AstXnor  {$lhsp, $rhsp.isZero}",	"AstNot{$lhsp}");
+    TREEOP ("AstXnor  {$lhsp, $rhsp.isZero}",	"AstNot{$lhsp}");
     // Non-zero on one side or the other
-    TREEOP("AstAnd   {$lhsp.isAllOnes, $rhsp}",	"replaceWRhs(nodep)");
+    TREEOP ("AstAnd   {$lhsp.isAllOnes, $rhsp}",	"replaceWRhs(nodep)");
-    TREEOP("AstLogAnd{$lhsp.isNeqZero, $rhsp}",	"replaceWRhs(nodep)");
+    TREEOP ("AstLogAnd{$lhsp.isNeqZero, $rhsp}",	"replaceWRhs(nodep)");
-    TREEOP("AstOr    {$lhsp.isAllOnes, $rhsp}",	"replaceWLhs(nodep)"); //->allOnes
+    TREEOP ("AstOr    {$lhsp.isAllOnes, $rhsp}",	"replaceWLhs(nodep)"); //->allOnes
-    TREEOP("AstLogOr {$lhsp.isNeqZero, $rhsp}",	"replaceNum(nodep,1)");
+    TREEOP ("AstLogOr {$lhsp.isNeqZero, $rhsp}",	"replaceNum(nodep,1)");
-    TREEOP("AstAnd   {$lhsp, $rhsp.isAllOnes}",	"replaceWLhs(nodep)");
+    TREEOP ("AstAnd   {$lhsp, $rhsp.isAllOnes}",	"replaceWLhs(nodep)");
-    TREEOP("AstLogAnd{$lhsp, $rhsp.isNeqZero}",	"replaceWLhs(nodep)");
+    TREEOP ("AstLogAnd{$lhsp, $rhsp.isNeqZero}",	"replaceWLhs(nodep)");
-    TREEOP("AstOr    {$lhsp, $rhsp.isAllOnes}",	"replaceWRhs(nodep)"); //->allOnes
+    TREEOP ("AstOr    {$lhsp, $rhsp.isAllOnes}",	"replaceWRhs(nodep)"); //->allOnes
-    TREEOP("AstLogOr {$lhsp, $rhsp.isNeqZero}",	"replaceNum(nodep,1)");
+    TREEOP ("AstLogOr {$lhsp, $rhsp.isNeqZero}",	"replaceNum(nodep,1)");
-    TREEOP("AstXor   {$lhsp.isAllOnes, $rhsp}",	"AstNot{$rhsp}");
+    TREEOP ("AstXor   {$lhsp.isAllOnes, $rhsp}",	"AstNot{$rhsp}");
-    TREEOP("AstXnor  {$lhsp.isAllOnes, $rhsp}",	"replaceWRhs(nodep)");
+    TREEOP ("AstXnor  {$lhsp.isAllOnes, $rhsp}",	"replaceWRhs(nodep)");
-    TREEOP("AstMul   {$lhsp.isOne, $rhsp}",	"replaceWRhs(nodep)");
+    TREEOP ("AstMul   {$lhsp.isOne, $rhsp}",	"replaceWRhs(nodep)");
-    TREEOP("AstMulS  {$lhsp.isOne, $rhsp}",	"replaceWRhs(nodep)");
+    TREEOP ("AstMulS  {$lhsp.isOne, $rhsp}",	"replaceWRhs(nodep)");
-    TREEOP("AstDiv   {$lhsp, $rhsp.isOne}",	"replaceWLhs(nodep)");
+    TREEOP ("AstDiv   {$lhsp, $rhsp.isOne}",	"replaceWLhs(nodep)");
-    TREEOP("AstDivS  {$lhsp, $rhsp.isOne}",	"replaceWLhs(nodep)");
+    TREEOP ("AstDivS  {$lhsp, $rhsp.isOne}",	"replaceWLhs(nodep)");
-    TREEOP("AstMul   {operandIsPowTwo($lhsp), $rhsp}",	"replaceMulShift(nodep)");  // a*2^n -> a<<n
+    TREEOP ("AstMul   {operandIsPowTwo($lhsp), $rhsp}",	"replaceMulShift(nodep)");  // a*2^n -> a<<n
-    TREEOP("AstDiv   {$lhsp, operandIsPowTwo($rhsp)}",	"replaceDivShift(nodep)");  // a/2^n -> a>>n
+    TREEOP ("AstDiv   {$lhsp, operandIsPowTwo($rhsp)}",	"replaceDivShift(nodep)");  // a/2^n -> a>>n
-    TREEOP("AstPow   {operandIsTwo($lhsp), $rhsp}",	"replacePowShift(nodep)");  // 2**a == 1<<a
+    TREEOP ("AstPow   {operandIsTwo($lhsp), $rhsp}",	"replacePowShift(nodep)");  // 2**a == 1<<a
-    TREEOP("AstPowS  {operandIsTwo($lhsp), $rhsp}",	"replacePowShift(nodep)");  // 2**a == 1<<a
+    TREEOP ("AstPowS  {operandIsTwo($lhsp), $rhsp}",	"replacePowShift(nodep)");  // 2**a == 1<<a
     // Trinary ops
     // Note V3Case::Sel requires Cond to always be conditionally executed in C to prevent core dump!
-    TREEOP("AstNodeCond{$condp.isZero,       $expr1p, $expr2p}", "replaceWChild(nodep,$expr2p)");
+    TREEOP ("AstNodeCond{$condp.isZero,       $expr1p, $expr2p}", "replaceWChild(nodep,$expr2p)");
-    TREEOP("AstNodeCond{$condp.isNeqZero,    $expr1p, $expr2p}", "replaceWChild(nodep,$expr1p)");
+    TREEOP ("AstNodeCond{$condp.isNeqZero,    $expr1p, $expr2p}", "replaceWChild(nodep,$expr1p)");
-    TREEOP("AstNodeCond{$condp, operandsSame($expr1p,,$expr2p)}","replaceWChild(nodep,$expr1p)");
+    TREEOPC("AstNodeCond{$condp.isZero,       $expr1p.castConst, $expr2p.castConst}", "replaceWChild(nodep,$expr2p)");
-    TREEOP("AstCond{$condp->castNot(),       $expr1p, $expr2p}", "AstCond{$condp->op1p(), $expr2p, $expr1p}");
+    TREEOPC("AstNodeCond{$condp.isNeqZero,    $expr1p.castConst, $expr2p.castConst}", "replaceWChild(nodep,$expr1p)");
-    TREEOP("AstNodeCond{$condp.width1, $expr1p.width1,   $expr1p.isAllOnes, $expr2p}", "AstOr {$condp, $expr2p}");  // a?1:b == a|b
+    TREEOP ("AstNodeCond{$condp, operandsSame($expr1p,,$expr2p)}","replaceWChild(nodep,$expr1p)");
-    TREEOP("AstNodeCond{$condp.width1, $expr1p.width1,   $expr1p,    $expr2p.isZero}", "AstAnd{$condp, $expr1p}");  // a?b:0 == a&b
+    TREEOP ("AstCond{$condp->castNot(),       $expr1p, $expr2p}", "AstCond{$condp->op1p(), $expr2p, $expr1p}");
-    TREEOP("AstNodeCond{$condp.width1, $expr1p.width1,   $expr1p, $expr2p.isAllOnes}", "AstOr {AstNot{$condp}, $expr1p}");  // a?b:1 == ~a|b
+    TREEOP ("AstNodeCond{$condp.width1, $expr1p.width1,   $expr1p.isAllOnes, $expr2p}", "AstOr {$condp, $expr2p}");  // a?1:b == a|b
-    TREEOP("AstNodeCond{$condp.width1, $expr1p.width1,   $expr1p.isZero,    $expr2p}", "AstAnd{AstNot{$condp}, $expr2p}");  // a?0:b == ~a&b
+    TREEOP ("AstNodeCond{$condp.width1, $expr1p.width1,   $expr1p,    $expr2p.isZero}", "AstAnd{$condp, $expr1p}");  // a?b:0 == a&b
-    TREEOP("AstNodeCond{!$condp.width1, operandBoolShift(nodep->condp())}", "replaceBoolShift(nodep->condp())");
+    TREEOP ("AstNodeCond{$condp.width1, $expr1p.width1,   $expr1p, $expr2p.isAllOnes}", "AstOr {AstNot{$condp}, $expr1p}");  // a?b:1 == ~a|b
+    TREEOP ("AstNodeCond{$condp.width1, $expr1p.width1,   $expr1p.isZero,    $expr2p}", "AstAnd{AstNot{$condp}, $expr2p}");  // a?0:b == ~a&b
+    TREEOP ("AstNodeCond{!$condp.width1, operandBoolShift(nodep->condp())}", "replaceBoolShift(nodep->condp())");
     // Prefer constants on left, since that often needs a shift, it lets constant red remove the shift
-    TREEOP("AstNodeBiCom{!$lhsp.castConst, $rhsp.castConst}",	"swapSides(nodep)");
+    TREEOP ("AstNodeBiCom{!$lhsp.castConst, $rhsp.castConst}",	"swapSides(nodep)");
-    TREEOP("AstNodeBiComAsv{operandAsvConst(nodep)}",	"replaceAsv(nodep)");
+    TREEOP ("AstNodeBiComAsv{operandAsvConst(nodep)}",	"replaceAsv(nodep)");
-    TREEOP("AstNodeBiComAsv{operandAsvSame(nodep)}",	"replaceAsv(nodep)");
+    TREEOP ("AstNodeBiComAsv{operandAsvSame(nodep)}",	"replaceAsv(nodep)");
-    TREEOP("AstNodeBiComAsv{operandAsvLUp(nodep)}",	"replaceAsvLUp(nodep)");
+    TREEOP ("AstNodeBiComAsv{operandAsvLUp(nodep)}",	"replaceAsvLUp(nodep)");
-    TREEOP("AstNodeBiComAsv{operandAsvRUp(nodep)}",	"replaceAsvRUp(nodep)");
+    TREEOP ("AstNodeBiComAsv{operandAsvRUp(nodep)}",	"replaceAsvRUp(nodep)");
     //    v--- *1* as These ops are always first, as we warn before replacing
     TREEOP1("AstLt   {$lhsp, $rhsp.isZero}",		"replaceNumSigned(nodep,0)");
     TREEOP1("AstGte  {$lhsp, $rhsp.isZero}",		"replaceNumSigned(nodep,1)");
@@ -1666,33 +1769,46 @@ private:
     TREEOP ("AstShiftL{operandShiftShift(nodep)}",	"replaceShiftShift(nodep)");
     TREEOP ("AstShiftR{operandShiftShift(nodep)}",	"replaceShiftShift(nodep)");
     TREEOP ("AstWordSel{operandWordOOB(nodep)}",	"replaceZero(nodep)");
+    // Compress out EXTENDs to appease loop unroller
+    TREEOPV("AstEq    {$lhsp.castExtend,operandBiExtendConst(nodep)}",	"DONE");
+    TREEOPV("AstNeq   {$lhsp.castExtend,operandBiExtendConst(nodep)}",	"DONE");
+    TREEOPV("AstGt    {$lhsp.castExtend,operandBiExtendConst(nodep)}",	"DONE");
+    TREEOPV("AstGte   {$lhsp.castExtend,operandBiExtendConst(nodep)}",	"DONE");
+    TREEOPV("AstLt    {$lhsp.castExtend,operandBiExtendConst(nodep)}",	"DONE");
+    TREEOPV("AstLte   {$lhsp.castExtend,operandBiExtendConst(nodep)}",	"DONE");
     // Identical operands on both sides
     // AstLogAnd/AstLogOr already converted to AstAnd/AstOr for these rules
     // AstAdd->ShiftL(#,1) but uncommon
-    TREEOP("AstAnd    {operandsSame($lhsp,,$rhsp)}",	"replaceWLhs(nodep)");
+    TREEOP ("AstAnd    {operandsSame($lhsp,,$rhsp)}",	"replaceWLhs(nodep)");
-    TREEOP("AstChangeXor{operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstChangeXor{operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
-    TREEOP("AstDiv    {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
+    TREEOP ("AstDiv    {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
-    TREEOP("AstDivS   {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
+    TREEOP ("AstDivS   {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
-    TREEOP("AstOr     {operandsSame($lhsp,,$rhsp)}",	"replaceWLhs(nodep)");
+    TREEOP ("AstOr     {operandsSame($lhsp,,$rhsp)}",	"replaceWLhs(nodep)");
-    TREEOP("AstSub    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstSub    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
-    TREEOP("AstXnor   {operandsSame($lhsp,,$rhsp)}",	"replaceAllOnes(nodep)");
+    TREEOP ("AstXnor   {operandsSame($lhsp,,$rhsp)}",	"replaceAllOnes(nodep)");
-    TREEOP("AstXor    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstXor    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
-    TREEOP("AstEq     {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");  // We let X==X -> 1, although in a true 4-state sim it's X.
+    TREEOP ("AstEq     {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");  // We let X==X -> 1, although in a true 4-state sim it's X.
-    TREEOP("AstEqCase {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
+    TREEOP ("AstEqD    {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");  // We let X==X -> 1, although in a true 4-state sim it's X.
-    TREEOP("AstEqWild {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
+    TREEOP ("AstEqCase {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
-    TREEOP("AstGt     {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstEqWild {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
-    TREEOP("AstGtS    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstGt     {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
-    TREEOP("AstGte    {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
+    TREEOP ("AstGtD    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
-    TREEOP("AstGteS   {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
+    TREEOP ("AstGtS    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
-    TREEOP("AstLt     {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstGte    {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
-    TREEOP("AstLtS    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstGteD   {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
-    TREEOP("AstLte    {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
+    TREEOP ("AstGteS   {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
-    TREEOP("AstLteS   {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
+    TREEOP ("AstLt     {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
-    TREEOP("AstNeq    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstLtD    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
-    TREEOP("AstNeqCase{operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstLtS    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
-    TREEOP("AstNeqWild{operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstLte    {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
-    TREEOP("AstLogAnd {operandsSame($lhsp,,$rhsp), $lhsp.width1}",	"replaceWLhs(nodep)");
+    TREEOP ("AstLteD   {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
-    TREEOP("AstLogOr  {operandsSame($lhsp,,$rhsp), $lhsp.width1}",	"replaceWLhs(nodep)");
+    TREEOP ("AstLteS   {operandsSame($lhsp,,$rhsp)}",	"replaceNum(nodep,1)");
+    TREEOP ("AstNeq    {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstNeqD   {operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstNeqCase{operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstNeqWild{operandsSame($lhsp,,$rhsp)}",	"replaceZero(nodep)");
+    TREEOP ("AstLogAnd {operandsSame($lhsp,,$rhsp), $lhsp.width1}",	"replaceWLhs(nodep)");
+    TREEOP ("AstLogOr  {operandsSame($lhsp,,$rhsp), $lhsp.width1}",	"replaceWLhs(nodep)");
     ///=== Verilog operators
     // Comparison against 1'b0/1'b1; must be careful about widths.
     // These use Not, so must be Verilog only
@@ -1743,18 +1859,33 @@ private:
     TREEOPV("AstReplicate{$lhsp, $rhsp.isOne, $lhsp->width()==nodep->width()}",	"replaceWLhs(nodep)");  // {1{lhs}}->lhs
     // Next rule because AUTOINST puts the width of bits in
     // to pins, even when the widths are exactly the same across the hierarchy.
-    TREEOPV("AstSel{operandSelExtend(nodep)}",	"replaceWChild(nodep, nodep->fromp()->castExtend()->lhsp())");
+    TREEOPV("AstSel{operandSelExtend(nodep)}",	"DONE");
     TREEOPV("AstSel{operandSelFull(nodep)}",	"replaceWChild(nodep, nodep->fromp())");
     TREEOPV("AstSel{$fromp.castSel}",		"replaceSelSel(nodep)");
-    TREEOPV("AstSel{$fromp.castConst, $lsbp.castConst, $widthp.castConst, }",	"replaceConst(nodep)");
+    TREEOPV("AstSel{$fromp.castAdd, operandSelBiLower(nodep)}",	"DONE");
+    TREEOPV("AstSel{$fromp.castAnd, operandSelBiLower(nodep)}",	"DONE");
+    TREEOPV("AstSel{$fromp.castOr,  operandSelBiLower(nodep)}",	"DONE");
+    TREEOPV("AstSel{$fromp.castSub, operandSelBiLower(nodep)}",	"DONE");
+    TREEOPV("AstSel{$fromp.castXnor,operandSelBiLower(nodep)}",	"DONE");
+    TREEOPV("AstSel{$fromp.castXor, operandSelBiLower(nodep)}",	"DONE");
+    TREEOPC("AstSel{$fromp.castConst, $lsbp.castConst, $widthp.castConst, }",	"replaceConst(nodep)");
     TREEOPV("AstSel{$fromp.castConcat, $lsbp.castConst, $widthp.castConst, }",	"replaceSelConcat(nodep)");
     TREEOPV("AstSel{$fromp.castReplicate, $lsbp.castConst, $widthp.isOne, }",	"replaceSelReplicate(nodep)");
+    // V3Tristate requires selects below BufIf1.
+    // Also do additional operators that are bit-independent, but only definite
+    // win if bit select is a constant (otherwise we may need to compute bit index several times)
+    TREEOPV("AstSel{$fromp.castBufIf1}",		"replaceSelIntoBiop(nodep)");
+    TREEOPV("AstSel{$fromp.castNot}",			"replaceSelIntoUniop(nodep)");
+    TREEOPV("AstSel{$fromp.castAnd,$lhsp.castConst}",	"replaceSelIntoUniop(nodep)");
+    TREEOPV("AstSel{$fromp.castOr,$lhsp.castConst}",	"replaceSelIntoUniop(nodep)");
+    TREEOPV("AstSel{$fromp.castXor,$lhsp.castConst}",	"replaceSelIntoUniop(nodep)");
+    TREEOPV("AstSel{$fromp.castXnor,$lhsp.castConst}",	"replaceSelIntoUniop(nodep)");
     // Conversions
     TREEOPV("AstRedXnor{$lhsp}",		"AstNot{AstRedXor{$lhsp}}");  // Just eliminate XNOR's
     TREEOPV("AstLogIf {$lhsp, $rhsp}",		"AstLogOr{AstLogNot{$lhsp},$rhsp}");
     TREEOPV("AstLogIff{$lhsp, $rhsp}",		"AstLogNot{AstXor{$lhsp,$rhsp}}");
     // Strings
-    TREEOP ("AstCvtPackString{$lhsp.castConst}",	"replaceConstString(nodep, nodep->lhsp()->castConst()->num().toString())");
+    TREEOPC("AstCvtPackString{$lhsp.castConst}",	"replaceConstString(nodep, nodep->lhsp()->castConst()->num().toString())");
 
 
     // Possible futures:
@@ -1781,15 +1912,37 @@ private:
     }
 
 public:
+    // Processing Mode Enum
+    enum ProcMode {
+	PROC_PARAMS,
+	PROC_LIVE,
+	PROC_V_WARN,
+	PROC_V_NOWARN,
+	PROC_V_EXPENSIVE,
+	PROC_CPP
+    };
+    
     // CONSTUCTORS
-    ConstVisitor(bool params, bool expensive, bool warn, bool cpp) {
+    ConstVisitor(ProcMode pmode) {
-	m_params = params; m_required = params;
+	m_params = false;
-	m_expensive = expensive;
+	m_required = false;
-	m_warn = warn;
+	m_doExpensive = false;
-	m_cpp = cpp;
+	m_doNConst = false;
-	m_wremove = true;
+	m_doV = false;
+	m_warn = false;
+	m_wremove = true;  // Overridden in visitors
 	m_modp = NULL;
 	m_scopep = NULL;
+	//
+	switch (pmode) {
+	case PROC_PARAMS:	m_doV = true;  m_doNConst = true; m_params = true; m_required = true; break;
+	case PROC_LIVE:		break;
+	case PROC_V_WARN:	m_doV = true;  m_doNConst = true; m_warn = true; break;
+	case PROC_V_NOWARN:	m_doV = true;  m_doNConst = true; break;
+	case PROC_V_EXPENSIVE:	m_doV = true;  m_doNConst = true; m_doExpensive = true; break;
+	case PROC_CPP:		m_doV = false; m_doNConst = true; break;
+	default:		v3fatalSrc("Bad case"); break;
+	}
     }
     virtual ~ConstVisitor() {}
     AstNode* mainAcceptEdit(AstNode* nodep) {
@@ -1806,7 +1959,7 @@ AstNode* V3Const::constifyParamsEdit(AstNode* nodep) {
     // Resize even if the node already has a width, because burried in the treee we may
     // have a node we just created with signing, etc, that isn't sized yet.
     nodep = V3Width::widthParamsEdit(nodep); // Make sure we've sized everything first
-    ConstVisitor visitor (true,false,false,false);
+    ConstVisitor visitor (ConstVisitor::PROC_PARAMS);
     if (AstVar* varp=nodep->castVar()) {
 	// If a var wants to be constified, it's really a param, and
 	// we want the value to be constant.  We aren't passed just the
@@ -1820,34 +1973,43 @@ AstNode* V3Const::constifyParamsEdit(AstNode* nodep) {
     return nodep;
 }
 
-void V3Const::constifyAll(AstNetlist* nodep) {
-    // Only call from Verilator.cpp, as it uses user#'s
-    UINFO(2,__FUNCTION__<<": "<<endl);
-    ConstVisitor visitor (false,true,false,false);
-    (void)visitor.mainAcceptEdit(nodep);
-}
-
 void V3Const::constifyAllLint(AstNetlist* nodep) {
     // Only call from Verilator.cpp, as it uses user#'s
     UINFO(2,__FUNCTION__<<": "<<endl);
-    ConstVisitor visitor (false,false,true,false);
+    ConstVisitor visitor (ConstVisitor::PROC_V_WARN);
     (void)visitor.mainAcceptEdit(nodep);
 }
 
 void V3Const::constifyCpp(AstNetlist* nodep) {
     UINFO(2,__FUNCTION__<<": "<<endl);
-    ConstVisitor visitor (false,false,false,true);
+    ConstVisitor visitor (ConstVisitor::PROC_CPP);
     (void)visitor.mainAcceptEdit(nodep);
 }
 
 AstNode* V3Const::constifyEdit(AstNode* nodep) {
-    ConstVisitor visitor (false,false,false,false);
+    ConstVisitor visitor (ConstVisitor::PROC_V_NOWARN);
     nodep = visitor.mainAcceptEdit(nodep);
     return nodep;
 }
 
+void V3Const::constifyAllLive(AstNetlist* nodep) {
+    // Only call from Verilator.cpp, as it uses user#'s
+    // This only pushes constants up, doesn't make any other edits
+    // IE doesn't prune dead statements, as we need to do some usability checks after this
+    UINFO(2,__FUNCTION__<<": "<<endl);
+    ConstVisitor visitor (ConstVisitor::PROC_LIVE);
+    (void)visitor.mainAcceptEdit(nodep);
+}
+
+void V3Const::constifyAll(AstNetlist* nodep) {
+    // Only call from Verilator.cpp, as it uses user#'s
+    UINFO(2,__FUNCTION__<<": "<<endl);
+    ConstVisitor visitor (ConstVisitor::PROC_V_EXPENSIVE);
+    (void)visitor.mainAcceptEdit(nodep);
+}
+
 AstNode* V3Const::constifyExpensiveEdit(AstNode* nodep) {
-    ConstVisitor visitor (false,true,false,false);
+    ConstVisitor visitor (ConstVisitor::PROC_V_EXPENSIVE);
     nodep = visitor.mainAcceptEdit(nodep);
     return nodep;
 }

src/V3Const.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -34,6 +34,8 @@ public:
     // Force this cell node's parameter list to become a constant
     // Return new node that may have replaced nodep
     static AstNode* constifyParamsEdit(AstNode* nodep);
+    // Only do constant pushing, without removing dead logic
+    static void constifyAllLive(AstNetlist* nodep);
     // Everything that's possible
     static void constifyAll(AstNetlist* nodep);
     // Also, warn

src/V3Coverage.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Coverage.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3CoverageJoin.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -97,7 +97,7 @@ private:
 		    removep->unlinkFrBack();  pushDeletep(removep); removep=NULL;
 		    // Remove node from comparison so don't hit it again
 		    hashed.erase(dupit);
-		    m_statToggleJoins++;
+		    ++m_statToggleJoins;
 		}
 	    }
 	}

src/V3CoverageJoin.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Dead.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -122,6 +122,12 @@ private:
 	    nodep->packagep()->user1Inc();
 	}
     }
+    virtual void visit(AstEnumItemRef* nodep, AstNUser*) {
+	nodep->iterateChildren(*this);
+	if (nodep->packagep()) {
+	    nodep->packagep()->user1Inc();
+	}
+    }
     virtual void visit(AstVarScope* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
 	m_vscsp.push_back(nodep);

src/V3Dead.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Delayed.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -224,7 +224,6 @@ private:
 	}
 	//
 	//=== Setting/not setting boolean: __Vdlyvset__
-	bool sharedVset = false;
 	AstVarScope* setvscp;
 
 	if (nodep->user3p()) {
@@ -232,9 +231,8 @@ private:
 	    // then we told this nodep->user3 we can use its Vdlyvset rather than making a new one.
 	    // This is good for code like:
 	    //    for (i=0; i<5; i++)  vector[i] <= something;
-	    sharedVset = true;
 	    setvscp = nodep->user3p()->castNode()->castVarScope();
-	    m_statSharedSet++;
+	    ++m_statSharedSet;
 	} else {  // Create new one
 	    string setvarname = (string("__Vdlyvset__")+oldvarp->shortName()+"__v"+cvtToStr(modVecNum));
 	    setvscp = createVarSc(varrefp->varScopep(), setvarname, 1);
@@ -345,9 +343,7 @@ private:
 	m_nextDlyp = NULL;
     }
     virtual void visit(AstVarRef* nodep, AstNUser*) {
-	if (!nodep->user2()) {  // Not done yet
+	if (!nodep->user2Inc()) {  // Not done yet
-	    nodep->user2(true);
-
 	    if (m_inDly && nodep->lvalue()) {
 		UINFO(4,"AssignDlyVar: "<<nodep<<endl);
 		markVarUsage(nodep->varScopep(), VU_DLY);

src/V3Delayed.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Depth.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Depth.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3DepthBlock.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3DepthBlock.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Descope.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3Descope.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3EmitC.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -55,9 +55,9 @@ public:
     }
 
     // ACCESSORS
-    int	splitFilenum() { return m_splitFilenum; }
+    int	splitFilenum() const { return m_splitFilenum; }
     int	splitFilenumInc() { m_splitSize = 0; return ++m_splitFilenum; }
-    int splitSize() { return m_splitSize; }
+    int splitSize() const { return m_splitSize; }
     void splitSizeInc(AstNode* nodep) { m_splitSize += EmitCBaseCounterVisitor(nodep).count(); }
     bool splitNeeded() { return (splitSize() && v3Global.opt.outputSplit() > 1
 				 && v3Global.opt.outputSplit() < splitSize()); }
@@ -127,6 +127,7 @@ public:
 	    nodep->lhsp()->iterateAndNext(*this); puts(", ");
 	} else if (nodep->isWide()
 		   && nodep->lhsp()->castVarRef()
+		   && !nodep->rhsp()->castCMath()
 		   && !nodep->rhsp()->castVarRef()
 		   && !nodep->rhsp()->castArraySel()) {
 	    // Wide functions assign into the array directly, don't need separate assign statement
@@ -343,13 +344,11 @@ public:
 	puts(");\n");
     }
     virtual void visit(AstFClose* nodep, AstNUser*) {
-	puts("if (");
+	puts("VL_FCLOSE_I(");
 	nodep->filep()->iterateAndNext(*this);
-	puts(") { fclose (VL_CVT_Q_FP(");
+	puts("); ");
-	nodep->filep()->iterateAndNext(*this);
-	puts(")); ");
 	nodep->filep()->iterateAndNext(*this);	// For saftey, so user doesn't later WRITE with it.
-	puts("=0; }\n");
+	puts("=0;\n");
     }
     virtual void visit(AstFFlush* nodep, AstNUser*) {
 	if (!nodep->filep()) {
@@ -357,11 +356,35 @@ public:
 	} else {
 	    puts("if (");
 	    nodep->filep()->iterateAndNext(*this);
-	    puts(") { fflush (VL_CVT_Q_FP(");
+	    puts(") { fflush (VL_CVT_I_FP(");
 	    nodep->filep()->iterateAndNext(*this);
 	    puts(")); }\n");
 	}
     }
+    virtual void visit(AstSystemT* nodep, AstNUser*) {
+	puts("(void)VL_SYSTEM_I");
+	emitIQW(nodep->lhsp());
+	puts("(");
+	if (nodep->lhsp()->isWide()) {
+	    puts(cvtToStr(nodep->lhsp()->widthWords()));
+	    putbs(", ");
+	}
+	checkMaxWords(nodep->lhsp());
+	nodep->lhsp()->iterateAndNext(*this);
+	puts(");\n");
+    }
+    virtual void visit(AstSystemF* nodep, AstNUser*) {
+	puts("VL_SYSTEM_I");
+	emitIQW(nodep->lhsp());
+	puts("(");
+	if (nodep->lhsp()->isWide()) {
+	    puts(cvtToStr(nodep->lhsp()->widthWords()));
+	    putbs(", ");
+	}
+	checkMaxWords(nodep->lhsp());
+	nodep->lhsp()->iterateAndNext(*this);
+	puts(")");
+    }
     virtual void visit(AstJumpGo* nodep, AstNUser*) {
 	puts("goto __Vlabel"+cvtToStr(nodep->labelp()->labelNum())+";\n");
     }
@@ -475,7 +498,7 @@ public:
 	}
 	visit(nodep->castNodeBiop(), vup);
     }
-    virtual void visit(AstCast* nodep, AstNUser*) {
+    virtual void visit(AstCCast* nodep, AstNUser*) {
 	// Extending a value of the same word width is just a NOP.
 	if (nodep->size()>VL_WORDSIZE) {
 	    puts("(QData)(");
@@ -546,6 +569,8 @@ public:
 		ofp()->printf(",0x%08" VL_PRI64 "x", (vluint64_t)(nodep->num().dataWord(word)));
 	    }
 	    ofp()->printf(",0x%08" VL_PRI64 "x)", (vluint64_t)(nodep->num().dataWord(0)));
+	} else if (nodep->isDouble()) {
+	    ofp()->printf("%.17g", nodep->num().toDouble());
 	} else if (nodep->isQuad()) {
 	    vluint64_t num = nodep->toUQuad();
 	    if (num<10) ofp()->printf("VL_ULL(%" VL_PRI64 "d)", num);
@@ -829,6 +854,8 @@ class EmitCImp : EmitCStmts {
 public:
     EmitCImp() {
 	m_modp = NULL;
+	m_slow = false;
+	m_fast = false;
     }
     virtual ~EmitCImp() {}
     void main(AstNodeModule* modp, bool slow, bool fast);
@@ -1211,6 +1238,7 @@ void EmitCStmts::displayNode(AstNode* nodep, AstScopeName* scopenamep,
 	    switch (tolower(pos[0])) {
 	    case '0': case '1': case '2': case '3': case '4':
 	    case '5': case '6': case '7': case '8': case '9':
+	    case '.':
 		// Digits, like %5d, etc.
 		vfmt += pos[0];
 		inPct = true;  // Get more digits
@@ -1229,6 +1257,9 @@ void EmitCStmts::displayNode(AstNode* nodep, AstScopeName* scopenamep,
 	    case 'h':
 	    case 'x': displayArg(nodep,&elistp,isScan, vfmt,'x'); break;
 	    case 's': displayArg(nodep,&elistp,isScan, vfmt,'s'); break;
+	    case 'e': displayArg(nodep,&elistp,isScan, vfmt,'e'); break;
+	    case 'f': displayArg(nodep,&elistp,isScan, vfmt,'f'); break;
+	    case 'g': displayArg(nodep,&elistp,isScan, vfmt,'g'); break;
 	    case 'm': {
 		if (!scopenamep) nodep->v3fatalSrc("Display with %m but no AstScopeName");
 		string suffix = scopenamep->scopePrettyName();
@@ -1419,6 +1450,7 @@ void EmitCImp::emitStaticDecl(AstNodeModule* modp) {
     // Need implementation here.  Be careful of alignment code; needs to be uniquified
     // with module name to avoid multiple symbols.
     //emitVarList(modp->stmtsp(), EVL_ALL, modp->name());
+    puts("");  // NOP for cppcheck, otherwise const function
 }
 
 void EmitCImp::emitTextSection(AstType type) {
@@ -1619,7 +1651,12 @@ void EmitCImp::emitInt(AstNodeModule* modp) {
     if (v3Global.needHInlines()) {   // Set by V3EmitCInlines; should have been called before us
 	puts("#include \""+topClassName()+"__Inlines.h\"\n");
     }
-    // No __Dpi.h needed, we've shimmed it all into the interface
+    if (v3Global.dpi()) {
+	// do this before including our main .h file so that any references to
+	// types defined in svdpi.h are available
+	puts("#include \""+ topClassName() +"__Dpi.h\"\n");
+	puts("\n");
+    }
 
     // Declare foreign instances up front to make C++ happy
     puts("class "+symClassName()+";\n");
@@ -1797,8 +1834,10 @@ void EmitCImp::emitImp(AstNodeModule* modp) {
 
     // Us
     puts("#include \""+ symClassName() +".h\"\n");
+
     if (v3Global.dpi()) {
-	puts("#include \""+ topClassName() +"__Dpi.h\"\n");
+	puts("\n");
+	puts("#include \"verilated_dpi.h\"\n");
     }
 
     if (optSystemPerl() && (splitFilenum() || !m_fast)) {
@@ -2003,7 +2042,9 @@ class EmitCTrace : EmitCStmts {
 	return varp->isSc() && varp->isScBv();
     }
     void emitTraceInitOne(AstTraceDecl* nodep) {
-	if (nodep->isWide()) {
+	if (nodep->isDouble()) {
+	    puts("vcdp->declDouble");
+	} else if (nodep->isWide()) {
 	    puts("vcdp->declArray");
 	} else if (nodep->isQuad()) {
 	    puts("vcdp->declQuad ");
@@ -2032,7 +2073,9 @@ class EmitCTrace : EmitCStmts {
 	string full = ((m_funcp->funcType() == AstCFuncType::TRACE_FULL
 			|| m_funcp->funcType() == AstCFuncType::TRACE_FULL_SUB)
 		       ? "full":"chg");
-	if (nodep->isWide() || emitTraceIsScBv(nodep)) {
+	if (nodep->isDouble()) {
+	    puts("vcdp->"+full+"Double");
+	} else if (nodep->isWide() || emitTraceIsScBv(nodep)) {
 	    puts("vcdp->"+full+"Array");
 	} else if (nodep->isQuad()) {
 	    puts("vcdp->"+full+"Quad ");

src/V3EmitC.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3EmitCBase.h

@@ -8,7 +8,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3EmitCInlines.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.

src/V3EmitCSyms.cpp

@@ -7,7 +7,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2010 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2011 by Wilson Snyder.  This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
 // Lesser General Public License Version 3 or the Perl Artistic License
 // Version 2.0.
@@ -519,13 +519,15 @@ void EmitCSyms::emitDpiHdr() {
     puts("// Manually include this file where DPI .c import functions are declared to insure\n");
     puts("// the C functions match the expectations of the DPI imports.\n");
     puts("\n");
+    puts("#include \"svdpi.h\"\n");
+    puts("\n");
     puts("#ifdef __cplusplus\n");
     puts("extern \"C\" {\n");
     puts("#endif\n");
     puts("\n");
     
-    bool firstExp = false;
+    int firstExp = 0;
-    bool firstImp = false;
+    int firstImp = 0;
     for (vector<AstCFunc*>::iterator it = m_dpis.begin(); it != m_dpis.end(); ++it) {
 	AstCFunc* nodep = *it;
 	if (nodep->dpiExportWrapper()) {