Version bump

Signed-off-by: Wilson Snyder <[email protected]>

Changes

@@ -3,6 +3,57 @@ Revision history for Verilator
 The contributors that suggested a given feature are shown in [].  [by ...]
 indicates the contributor was also the author of the fix; Thanks!
 
+* Verilator 3.844 2013/01/09
+
+***   Support "unsigned int" DPI import functions, msg966.  [Alex Lee]
+
+***   Fix package resolution of parameters, bug586. [Jeremy Bennett]
+
+****  Fix non-integer vpi_get_value, bug587.  [Rich Porter]
+
+****  Fix task inlining under $display and case, bug589, bug598.  [Holger Waechtler]
+
+****  Fix package import of non-localparam parameter, bug591.  [Jeremy Bennett]
+
+****  Fix package import of package imports, partial bug592.  [Jeremy Bennett]
+
+****  Fix package import preventing local var, bug599.  [Jeremy Bennett]
+
+****  Fix array extraction of implicit vars, bug601.  [Joe Eiler]
+
+
+* Verilator 3.843 2012/12/01
+
+***   Add +1364-1995ext and similar language options, bug532.  [Jeremy Bennett]
+
+****  Fix mis-optimized identical submodule subtract, bug581.  [Charlie Brej]
+
+****  Fix crash on dotted references into dead modules, bug583.  [Jeremy Bennett]
+
+****  Fix compile issues on MSVCC, bug571, bug577.  [Amir Gonnen]
+
+****  Fix --debug overriding preceding --dump-treei, bug580.  [Jeremy Bennett]
+
+
+* Verilator 3.842 2012/11/03
+
+****  Add -x-initial-edge, bug570.  [Jeremy Bennett]
+
+****  Fix parameter pins interspersed with cells broke in 3.840.  [Bernard Deadman]
+
+****  Fix large shift error on large shift constants.  [David Welch]
+
+****  Fix $display mangling on GCC 4.7 and speed up, msg927, bug373, bug574. [R Diez]
+
+****  Fix array of struct references giving false error, bug566. [Julius Baxter]
+
+****  Fix missing var access functions when no DPI, bug572. [Amir Gonnen]
+
+****  Fix name collision on unnamed blocks, bug567.  [Chandan Egbert]
+
+****  Fix name collision on task inputs, bug569.  [Chandan Egbert]
+
+
 * Verilator 3.841 2012/09/03
 
 ***   Add --savable to support model save/restore.  [Jeremy Bennett]
@@ -2100,7 +2151,7 @@ of input ports exists for tracing.
 
 This uses outline mode in Emacs.  See C-h m [M-x describe-mode].
 
-Copyright 2001-2012 by Wilson Snyder.  This program is free software; you
+Copyright 2001-2013 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.

Makefile.in

@@ -9,7 +9,7 @@
 #
 #*****************************************************************************
 #
-# Copyright 2003-2012 by Wilson Snyder. This program is free software; you can
+# Copyright 2003-2013 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.

TODO

@@ -1,6 +1,6 @@
 // DESCRIPTION: Verilator: List of To Do issues.
 //
-// Copyright 2004-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2004-2013 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.
@@ -62,7 +62,7 @@ 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 2001-2012.
+	  Verilator 3.600 - fast, free, open-sourced.  Copyright 2001-2013.
 	  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")

bin/verilator

@@ -3,7 +3,7 @@ eval 'exec perl -wS $0 ${1+"$@"}'
   if 0;
 ######################################################################
 #
-# Copyright 2003-2012 by Wilson Snyder. This program is free software; you
+# Copyright 2003-2013 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.
@@ -241,6 +241,11 @@ descriptions in the next sections for more information.
     {file.c/cc/cpp}             Optional C++ files to compile in
     {file.a/o/so}               Optional C++ files to link in
 
+     +1364-1995ext+<ext>        Use Verilog 1995 with file extension <ext>
+     +1364-2001ext+<ext>        Use Verilog 2001 with file extension <ext>
+     +1364-2005ext+<ext>        Use Verilog 2005 with file extension <ext>
+     +1800-2005ext+<ext>        Use SystemVerilog 2005 with file extension <ext>
+     +1800-2009ext+<ext>        Use SystemVerilog 2009 with file extension <ext>
     --assert                    Enable all assertions
     --autoflush                 Flush streams after all $displays
     --bbox-sys                  Blackbox unknown $system calls
@@ -261,6 +266,7 @@ descriptions in the next sections for more information.
     --debug-check               Enable debugging assertions
     --debugi <level>            Enable debugging at a specified level
     --debugi-<srcfile> <level>  Enable debugging a source file at a level
+    --default-language <lang>   Default language to parse
      +define+<var>+<value>      Set preprocessor define
     --dump-tree                 Enable dumping .tree files
     --dump-treei <level>        Enable dumping .tree files at a level
@@ -279,7 +285,7 @@ descriptions in the next sections for more information.
     --inline-mult <value>       Tune module inlining
      -LDFLAGS <flags>           Linker pre-object flags for makefile
      -LDLIBS <flags>            Linker library flags for makefile
-    --language <lang>           Language standard to parse
+    --language <lang>           Default language standard to parse
      +libext+<ext>+[ext]...     Extensions for finding modules
     --lint-only                 Lint, but do not make output
     --MMD                       Create .d dependency files
@@ -308,6 +314,7 @@ descriptions in the next sections for more information.
     --sp                        Create SystemPerl output
     --stats                     Create statistics file
      -sv                        Enable SystemVerilog parsing
+     +systemverilogext+<ext>    Synonym for +1800-2009ext+<ext>
     --top-module <topname>      Name of top level input module
     --trace                     Enable waveform creation
     --trace-depth <levels>      Depth of tracing
@@ -320,13 +327,16 @@ descriptions in the next sections for more information.
     --unused-regexp <regexp>    Tune UNUSED lint signals
      -V                         Verbose version and config
      -v <filename>              Verilog library
+     +verilog1995ext+<ext>      Synonym for +1364-1995ext+<ext>
+     +verilog2001ext+<ext>      Synonym for +1364-2001ext+<ext>
      -Werror-<message>          Convert warning to error
      -Wfuture-<message>         Disable unknown message warnings
      -Wno-<message>             Disable warning
      -Wno-lint                  Disable all lint warnings
      -Wno-style                 Disable all style warnings
      -Wno-fatal                 Disable fatal exit on warnings
-     -x-assign <mode>           Initially assign Xs to this value
+    --x-assign <mode>           Initially assign Xs to this value
+    --x-initial-edge            Enable initial X->0 and X->1 edge triggers
      -y <dir>                   Directory to search for modules
 
 
@@ -354,18 +364,56 @@ this way, Verilator will include a make rule that uses these files when
 linking the I<module> executable.  This generally is only useful when used
 with the --exe option.
 
+=item +1364-1995ext+I<ext>
+
+=item +1364-2001ext+I<ext>
+
+=item +1364-2005ext+I<ext>
+
+=item +1800-2005ext+I<ext>
+
+=item +1800-2009ext+I<ext>
+
+Specifies the language standard to be used with a specific filename
+extension, I<ext>.
+
+For compatibility with other simulators, see also the synonyms
+C<+verilog1995ext+>I<ext>, C<+verilog2001ext+>I<ext>, and
+C<+systemverilogext+>I<ext>.
+
+For any source file, the language specified by these options takes
+precedence over any language specified by the C<--default-language> or
+C<--language> options.
+
+These options take effect in the order they are encountered. Thus the
+following would use Verilog 1995 for C<a.v> and Verilog 2001 for C<b.v>.
+
+    verilator ... +1364-1995ext+v a.v +1364-2001ext+v b.v
+
+These flags are only recommended for legacy mixed language designs, as the
+preferable option is to edit the code to repair new keywords, or add
+appropriate C<`begin_keywords>.
+
+B<Note> C<`begin_keywords> is a SystemVerilog construct, which specifies
+I<only> which the set of keywords is to be recognized. Whatever set is
+chosen, the semantics will be those of SystemVerilog. By contrast
+C<+1364-1995ext+> etc. specify both the syntax I<and> semantics to be used.
+
 =item --assert
 
 Enable all assertions, includes enabling the --psl flag.  (If psl is not
 desired, but other assertions are, use --assert --nopsl.)
 
-See also --x-assign; setting "--x-assign unique" may be desirable.
+See also --x-assign and --x-initial-edge; setting "--x-assign unique"
+and/or "--x-initial-edge" may be desirable.
 
 =item --autoflush
 
 After every $display or $fdisplay, flush the output stream.  This insures
-that messages will appear immediately but may reduce performance.  Defaults
-off, which will buffer output as provided by the normal C stdio calls.
+that messages will appear immediately but may reduce performance; for best
+performance call "fflush(stdout)" occasionally in the main C loop.
+Defaults off, which will buffer output as provided by the normal C stdio
+calls.
 
 =item --bbox-sys
 
@@ -525,6 +573,7 @@ Rarely needed.  Enable internal debugging assertion checks, without
 changing debug verbosity.  Enabled automatically when --debug specified.
 
 =item --debugi <level>
+
 =item --debugi-<srcfile> <level>
 
 Rarely needed - for developer use.  Set internal debugging level globally
@@ -532,6 +581,25 @@ to the specified debug level (1-10) or set the specified source file to the
 specified level. Higher levels produce more detailed messages (plain
 C<--debug> is equivalent to C<--debugi 4>).
 
+=item --default-language I<value>
+
+Select the language to be used by default when first processing each
+Verilog file.  The language value must be "1364-1995", "1364-2001",
+"1364-2005", "1800-2005" or "1800-2009".
+
+Any language associated with a particular file extension (see the various
++I<lang>ext+ options) will be used in preference to the language specified
+by --default-language.
+
+The --default-language flag is only recommended for legacy code using the
+same language in all source files, as the preferable option is to edit the
+code to repair new keywords, or add appropriate C<`begin_keywords>. For
+legacy mixed language designs, the various +I<lang>ext+ options should be
+used.
+
+If no language is specified, either by this flag or +I<lang>ext+ options,
+then the latest SystemVerilog language (IEEE 1800-2009) is used.
+
 =item +define+I<var>+I<value>
 
 Defines the given preprocessor symbol.  Same as -D; +define is fairly
@@ -545,7 +613,7 @@ the Verilator Internals manual.  --dump-tree is enabled automatically with
 --debug, so "--debug --no-dump-tree" may be useful if the dump files are
 large and not desired.
 
-=item --dump-treei
+=item --dump-treei <level>
 
 Rarely needed.  Enable writing .tree debug files with a specific dumping
 level, 0 disbles dumps and is equivelent to "--no-dump-tree".  Level 9
@@ -641,15 +709,8 @@ in the Make variable LDLIBS, not LDFLAGS.)
 
 =item --language I<value>
 
-Select the language to be used when first processing each Verilog file.
-The language value must be "1364-1995", "1364-2001", "1364-2001",
-"1364-2005", "1800-2005", "VAMS-2.3".  Verilator also allows the
-non-standard "1800+VAMS" to allow both the full SystemVerilog and
-Verilog-AMS keywords.
-
-The --language flag is only recommended for legacy code, as the preferable
-option is to edit the code to repair new keywords, or add appropriate
-`begin_keywords.
+A synonym for C<--default-langauge>, for compatibility with other tools and
+earlier versions of Verilator.
 
 =item +libext+I<ext>+I<ext>...
 
@@ -856,6 +917,10 @@ Specifies SystemVerilog language features should be enabled; equivalent to
 "--language 1800-2005".  This option is selected by default, it exists for
 compatibility with other simulators.
 
+=item  +systemverilogext+I<ext>
+
+A synonym for C<+1800-2009ext+>I<ext>.
+
 =item --top-module I<topname>
 
 When the input Verilog contains more than one top level module, specifies
@@ -931,6 +996,12 @@ Read the filename as a Verilog library.  Any modules in the file may be
 used to resolve cell instantiations in the top level module, else ignored.
 Note -v is fairly standard across Verilog tools.
 
+=item  +verilog1995ext+I<ext>
+
+=item  +verilog2001ext+I<ext>
+
+Synonyms for C<+1364-1995ext+>I<ext> and C<+1364-2001ext+>I<ext> respectively
+
 =item -Wall
 
 Enable all warnings, including code style warnings that are normally
@@ -1000,29 +1071,63 @@ Enable all code style related warning messages.  This is equivalent to
 -Wwarn-PINNOCONNECT -Wwarn-SYNCASYNCNET -Wwarn-UNDRIVEN -Wwarn-UNUSED
 -Wwarn-VARHIDDEN".
 
-=item -x-assign 0
+=item --x-assign 0
 
-=item -x-assign 1
+=item --x-assign 1
 
-=item -x-assign fast (default)
+=item --x-assign fast (default)
 
-=item -x-assign unique
+=item --x-assign unique
 
 Controls the two-state value that is replaced when an assignment to X is
-encountered.  -x-assign=fast, the default, converts all Xs to whatever is
-best for performance.  -x-assign=0 converts all Xs to 0s, and is also fast.
--x-assign=1 converts all Xs to 1s, this is nearly as fast as 0, but more
-likely to find reset bugs as active high logic will fire.  -x-assign=unique
+encountered.  --x-assign=fast, the default, converts all Xs to whatever is
+best for performance.  --x-assign=0 converts all Xs to 0s, and is also fast.
+--x-assign=1 converts all Xs to 1s, this is nearly as fast as 0, but more
+likely to find reset bugs as active high logic will fire.  --x-assign=unique
 will call a function to determine the value, this allows randomization of
 all Xs to find reset bugs and is the slowest, but safest for finding reset
 bugs in code.
 
-If using -x-assign unique, you may want to seed your random number
+If using --x-assign unique, you may want to seed your random number
 generator such that each regression run gets a different randomization
 sequence.  Use the system's srand48() or for Windows srand() function to do
 this.  You'll probably also want to print any seeds selected, and code to
 enable rerunning with that same seed so you can reproduce bugs.
 
+B<Note.> This option applies only to variables which are explicitly assigned
+to X in the Verilog source code. Initial values of clocks are set to 0 unless
+--x-initial-edge is specified. Initial values of all other state holding
+variables are set as though --x-assign unique had been specified.
+
+=item --x-initial-edge
+
+Enables emulation of event driven simulators which generally trigger an
+edge on a transition from X to 1 (C<posedge>) or X to 0 (C<negedge>). Thus
+the following code, where C<rst_n> is uninitialized would set C<res_n> to
+C<1'b1> when C<rst_n> is first set to zero:
+
+    reg  res_n = 1'b0;
+
+    always @(negedge rst_n) begin
+       if (rst_n == 1'b0) begin
+          res_n <= 1'b1;
+       end
+    end
+
+
+In Verilator, by default, uninitialized clocks are given a value of zero,
+so the above C<always> block would not trigger.
+
+While it is not good practice, there are some designs that rely on X
+E<rarr> 0 triggering a C<negedge>, particularly in reset sequences. Using
+--x-initial-edge with Verilator will replicate this behaviour. It will also
+ensure that X E<rarr> 1 triggers a C<posedge>.
+
+B<Note.> Some users have reported that using this option can affect
+convergence, and that it may be necessary to use --converge-limit to
+increase the number of convergence iterations. This may be another
+indication of problems with the modelled design that should be addressed.
+
 =item -y I<dir>
 
 Add the directory to the list of directories that should be searched for
@@ -1058,6 +1163,7 @@ We'll compile this example into C++.
 	  Verilated::commandArgs(argc, argv);
           Vour* top = new Vour;
           while (!Verilated::gotFinish()) { top->eval(); }
+          delete top;
           exit(0);
       }
     EOF
@@ -1125,6 +1231,7 @@ This is an example similar to the above, but using SystemPerl.
           top = new Vour("top");   // SP_CELL (top, Vour);
           top->clk(clk);           // SP_PIN  (top, clk, clk);
           while (!Verilated::gotFinish()) { sc_start(1, SC_NS); }
+          delete top; 
           exit(0);
       }
     EOF
@@ -1181,9 +1288,9 @@ the test_sp directory in the distribution for an example.
 
 =head1 BENCHMARKING & OPTIMIZATION
 
-For best performance, run Verilator with the "-O3 -x-assign=fast
+For best performance, run Verilator with the "-O3 --x-assign=fast
 --noassert" flags.  The -O3 flag will require longer compile times, and
--x-assign=fast may increase the risk of reset bugs in trade for
+--x-assign=fast may increase the risk of reset bugs in trade for
 performance; see the above documentation for these flags.
 
 Minor Verilog code changes can also give big wins.  You should not have any
@@ -1198,8 +1305,10 @@ C++ compiler and size of your CPU's caches.
 By default, the lib/verilated.mk file has optimization turned off.  This is
 for the benefit of new users, as it improves compile times at the cost of
 runtimes.  To add optimization as the default, set one of three variables,
-OPT, OPT_FAST, or OPT_SLOW in lib/verilated.mk. Or, just for one run, pass
-them on the command line to make:
+OPT, OPT_FAST, or OPT_SLOW lib/verilated.mk.  Or, use the -CFLAGS and/or
+-LDFLAGS option on the verilator command line to pass the flags directly to
+the compiler or linker.  Or, just for one run, pass them on the command
+line to make:
 
     make OPT_FAST="-O2" -f Vour.mk Vour__ALL.a
 
@@ -1210,7 +1319,9 @@ rarely, yet take a long time to compile with optimization on.  OPT
 specifies overall optimization and affects all compiles, including those
 OPT_FAST and OPT_SLOW affect.  For best results, use OPT="-O2", and link
 with "-static".  Nearly the same results can be had with much better
-compile times with OPT_FAST="-O1 -fstrict-aliasing".
+compile times with OPT_FAST="-O1 -fstrict-aliasing".  Higher optimization
+such as "-O3" may help, but gcc compile times may be excessive under O3 on
+even medium sized designs.
 
 Unfortunately, using the optimizer with SystemC files can result in
 compiles taking several minutes.  (The SystemC libraries have many little
@@ -1224,6 +1335,11 @@ If you will be running many simulations on a single compile, investigate
 feedback driven compilation.  With GCC, using -fprofile-arcs, then
 -fbranch-probabilities will yield another 15% or so.
 
+Modern compilers also support link-time optimization (LTO), which can help
+especially if you link in DPI code.  To enable LTO on GCC, pass "-flto" in
+both compilation and link.  Note LTO may cause excessive compile times on
+large designs.
+
 You may uncover further tuning possibilities by profiling the Verilog code.
 Use Verilator's --profile-cfuncs, then GCC's -g -pg.  You can then run
 either oprofile or gprof to see where in the C++ code the time is spent.
@@ -1423,6 +1539,7 @@ example:
 
 	    top->final();		// Done simulating
 	    //	  // (Though this example doesn't get here)
+	    delete top;
 	}
 
 Note signals are read and written as member variables of the lower module.
@@ -2264,7 +2381,7 @@ from a four state simulator.  An === comparison to X will always be false,
 so that Verilog code which checks for uninitialized logic will not fire.
 
 Assigning a variable to a X will actually assign the variable to a random
-value (see the -x-assign switch.)  Thus if the value is actually used, the
+value (see the --x-assign switch.)  Thus if the value is actually used, the
 random value should cause downstream errors.  Integers also randomize, even
 though the Verilog 2001 specification says they initialize to zero.
 
@@ -2276,6 +2393,18 @@ following runs have it initialize them randomly.  If the results match,
 reset works.  (Note this is what the hardware will really do.)  In
 practice, just setting all variables to one at startup finds most problems.
 
+B<Note.> --x-assign applies to variables explicitly initialized or assigned to
+X. Unititialized clocks are initialized to zero, while all other state holding
+variables are initialized to a random value.
+
+Event driven simulators will generally trigger an edge on a transition from X
+to 1 (C<posedge>) or X to 0 (C<negedge>). However, by default, since clocks
+are initialized to zero, Verilator will not trigger an initial negedge. Some
+code (particulary for reset) may rely on X->0 triggering an edge. Verilator
+provides a switch (see --x-initial-edge) to enable this behavior. Comparing
+runs with and without this switch will find such problems.
+
+
 =head2 Tri/Inout
 
 Verilator converts some simple tristate structures into two state.  Pullup,
@@ -3579,7 +3708,7 @@ Thanks to them, and all those we've missed including above.
 
 The latest version is available from L<http://www.veripool.org/>.
 
-Copyright 2003-2012 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2003-2013 by Wilson Snyder.  Verilator is free software; you can
 redistribute it and/or modify the Verilator internals under the terms of
 either the GNU Lesser General Public License Version 3 or the Perl Artistic
 License Version 2.0.
@@ -3594,9 +3723,11 @@ Major concepts by Paul Wasson and Duane Galbi.
 
 =head1 SEE ALSO
 
-L<verilator_profcfunc>, L<systemperl>, L<vcoverage>, L<make>
+L<verilator_profcfunc>, L<systemperl>, L<vcoverage>, L<make>,
 
-And internals.txt in the distribution.
+L<verilator --help> which is the source for this document,
+
+and internals.txt in the distribution.
 
 =cut
 

bin/verilator_difftree

@@ -235,7 +235,7 @@ Do not show differences in line numbering.
 
 The latest version is available from L<http://www.veripool.org/verilator>.
 
-Copyright 2005-2012 by Wilson Snyder.  This package is free software; you can
+Copyright 2005-2013 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 2003-2012 by Wilson Snyder. This package is free software; you can
+# Copyright 2003-2013 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

@@ -208,7 +208,7 @@ Displays this message and program version and exits.
 
 The latest version is available from L<http://www.veripool.org/>.
 
-Copyright 2007-2012 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2007-2013 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

@@ -1,10 +1,12 @@
 # DESCRIPTION: Process this file with autoconf to produce a configure script.
 #
-# Copyright 2003-2012 by Wilson Snyder. Verilator is free software; you can
+# Copyright 2003-2013 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.
 
-AC_INIT([Verilator],[3.841 2012-09-03])
+#AC_INIT([Verilator],[#.### YYYY-MM-DD])
+#AC_INIT([Verilator],[#.### devel])
+AC_INIT([Verilator],[3.844 2013-01-09])
 AC_CONFIG_HEADER(src/config_build.h)
 AC_CONFIG_FILES(Makefile src/Makefile src/Makefile_obj include/verilated.mk)
 

include/verilated.cpp

@@ -1,7 +1,7 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2013 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.
@@ -308,7 +308,7 @@ void _vl_vsformat(string& output, const char* formatp, va_list ap) {
 	    const char *ep = pos;
 	    while (ep[0] && ep[0]!='%') ep++;
 	    if (ep != pos) {
-		output += string(pos, ep-pos);
+		output.append(pos, ep-pos);
 		pos += ep-pos-1;
 	    }
 	} else { // Format character
@@ -353,9 +353,9 @@ void _vl_vsformat(string& output, const char* formatp, va_list ap) {
 		// Deal with all read-and-print somethings
 		const int lbits = va_arg(ap, int);
 		QData ld = 0;
+		WData qlwp[2];
 		WDataInP lwp;
 		if (lbits <= VL_QUADSIZE) {
-		    WData qlwp[2];
 		    ld = _VL_VA_ARG_Q(ap, lbits);
 		    VL_SET_WQ(qlwp,ld);
 		    lwp = qlwp;
@@ -757,9 +757,10 @@ void VL_FCLOSE_I(IData fdi) {
 }
 
 void VL_SFORMAT_X(int obits, void* destp, const char* formatp, ...) {
+    VL_STATIC_OR_THREAD string output;  // static only for speed
+    output = "";
     va_list ap;
     va_start(ap,formatp);
-    string output;
     _vl_vsformat(output, formatp, ap);
     va_end(ap);
 
@@ -767,9 +768,10 @@ void VL_SFORMAT_X(int obits, void* destp, const char* formatp, ...) {
 }
 
 string VL_SFORMATF_NX(const char* formatp, ...) {
+    VL_STATIC_OR_THREAD string output;  // static only for speed
+    output = "";
     va_list ap;
     va_start(ap,formatp);
-    string output;
     _vl_vsformat(output, formatp, ap);
     va_end(ap);
 
@@ -777,9 +779,10 @@ string VL_SFORMATF_NX(const char* formatp, ...) {
 }
 
 void VL_WRITEF(const char* formatp, ...) {
+    VL_STATIC_OR_THREAD string output;  // static only for speed
+    output = "";
     va_list ap;
     va_start(ap,formatp);
-    string output;
     _vl_vsformat(output, formatp, ap);
     va_end(ap);
 
@@ -788,12 +791,13 @@ void VL_WRITEF(const char* formatp, ...) {
 }
 
 void VL_FWRITEF(IData fpi, const char* formatp, ...) {
+    VL_STATIC_OR_THREAD string output;  // static only for speed
+    output = "";
     FILE* fp = VL_CVT_I_FP(fpi);
     if (VL_UNLIKELY(!fp)) return;
 
     va_list ap;
     va_start(ap,formatp);
-    string output;
     _vl_vsformat(output, formatp, ap);
     va_end(ap);
 
@@ -956,13 +960,13 @@ IData VL_SYSTEM_IW(int lhswords, WDataInP filenamep) {
 }
 
 IData VL_TESTPLUSARGS_I(const char* formatp) {
-    string match = VerilatedImp::argPlusMatch(formatp);
+    const string& match = VerilatedImp::argPlusMatch(formatp);
     if (match == "") return 0;
     else return 1;
 }
 
 IData VL_VALUEPLUSARGS_IW(int rbits, const char* prefixp, char fmt, WDataOutP rwp) {
-    string match = VerilatedImp::argPlusMatch(prefixp);
+    const string& match = VerilatedImp::argPlusMatch(prefixp);
     const char* dp = match.c_str() + 1 /*leading + */ + strlen(prefixp);
     if (match == "") return 0;
     VL_ZERO_RESET_W(rbits, rwp);
@@ -998,7 +1002,7 @@ IData VL_VALUEPLUSARGS_IW(int rbits, const char* prefixp, char fmt, WDataOutP rw
 }
 
 const char* vl_mc_scan_plusargs(const char* prefixp) {
-    string match = VerilatedImp::argPlusMatch(prefixp);
+    const string& match = VerilatedImp::argPlusMatch(prefixp);
     static VL_THREAD char outstr[VL_VALUE_STRING_MAX_WIDTH];
     if (match == "") return NULL;
     strncpy(outstr, match.c_str()+strlen(prefixp)+1, // +1 to skip the "+"

include/verilated.h

@@ -1,7 +1,7 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2013 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.mk.in

@@ -2,7 +2,7 @@
 ######################################################################
 # DESCRIPTION: Makefile commands for all verilated target files
 #
-# Copyright 2003-2012 by Wilson Snyder. Verilator is free software; you can
+# Copyright 2003-2013 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.
 ######################################################################

include/verilated.v

@@ -4,7 +4,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2013 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_dpi.cpp

@@ -1,7 +1,7 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2009-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2009-2013 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_dpi.h

@@ -1,7 +1,7 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2013 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_heavy.h

@@ -1,7 +1,7 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2010-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2010-2013 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 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2009-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2009-2013 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_save.cpp

@@ -3,7 +3,7 @@
 //
 // THIS MODULE IS PUBLICLY LICENSED
 //
-// Copyright 2001-2012 by Wilson Snyder.  This program is free software;
+// Copyright 2001-2013 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 +34,13 @@
 # include <unistd.h>
 #endif
 
+#ifndef O_LARGEFILE // For example on WIN32
+# define O_LARGEFILE 0
+#endif
+#ifndef O_NONBLOCK
+# define O_NONBLOCK 0
+#endif
+
 // CONSTANTS
 static const char* VLTSAVE_HEADER_STR = "verilatorsave01\n";	///< Value of first bytes of each file
 static const char* VLTSAVE_TRAILER_STR = "vltsaved";	///< Value of last bytes of each file

include/verilated_save.h

@@ -3,7 +3,7 @@
 //
 // THIS MODULE IS PUBLICLY LICENSED
 //
-// Copyright 2012-2012 by Wilson Snyder.  This program is free software;
+// Copyright 2012-2013 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_sc.h

@@ -1,7 +1,7 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2009-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2009-2013 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 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2013 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 2001-2012 by Wilson Snyder.  This program is free software;
+// Copyright 2001-2013 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 2001-2012 by Wilson Snyder.  This program is free software;
+// Copyright 2001-2013 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.cpp

@@ -3,7 +3,7 @@
 //
 // THIS MODULE IS PUBLICLY LICENSED
 //
-// Copyright 2001-2012 by Wilson Snyder.  This program is free software;
+// Copyright 2001-2013 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 2001-2012 by Wilson Snyder.  This program is free software;
+// Copyright 2001-2013 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

@@ -1,7 +1,7 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2009-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2009-2013 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.h

@@ -1,7 +1,7 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2009-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2009-2013 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.
@@ -101,6 +101,7 @@ public:
     // cppcheck-suppress uninitVar  // m_value
     VerilatedVpioCb(const t_cb_data* cbDatap, QData time)
 	: m_cbData(*cbDatap), m_time(time) {
+        m_value.format = cbDatap->value?cbDatap->value->format:vpiSuppressVal;
 	m_cbData.value = &m_value;
     }
     virtual ~VerilatedVpioCb() {}
@@ -182,7 +183,7 @@ public:
     vluint32_t entSize() const { return m_entSize; }
     virtual const char* name() { return m_varp->name(); }
     virtual const char* fullname() {
-	static VL_THREAD string out;
+	VL_STATIC_OR_THREAD string out;
 	out = string(m_scopep->name())+"."+name();
 	return out.c_str();
     }
@@ -207,7 +208,7 @@ public:
     virtual ~VerilatedVpioVarIndex() {}
     static inline VerilatedVpioVarIndex* castp(vpiHandle h) { return dynamic_cast<VerilatedVpioVarIndex*>((VerilatedVpio*)h); }
     virtual const char* fullname() {
-	static VL_THREAD string out;
+	VL_STATIC_OR_THREAD string out;
 	char num[20]; sprintf(num,"%d",m_index);
 	out = string(scopep()->name())+"."+name()+"["+num+"]";
 	return out.c_str();

include/verilatedos.h

@@ -1,7 +1,7 @@
 // -*- mode: C++; c-file-style: "cc-mode" -*-
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder. This program is free software; you can
+// Copyright 2003-2013 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.
@@ -78,8 +78,12 @@
 # else
 #  error "Unsupported compiler for VL_THREADED: No thread-local declarator"
 # endif
+# define VL_STATIC_OR_THREAD		///< Static if unthreaded, as some strings can be faster
+//					///< if non-dynamic and can't do "static VL_THREAD string"
 #else
 # define VL_THREAD			///< Storage class for thread-local storage
+# define VL_STATIC_OR_THREAD static	///< Static if unthreaded, as some strings can be faster
+//					///< if non-dynamic and can't do "static VL_THREAD string"
 #endif
 
 #ifdef _MSC_VER

include/vltstd/svdpi.h

@@ -36,18 +36,22 @@ typedef signed __int8 int8_t;
 #endif
 
 /* Use to export a symbol from application */
+#ifndef DPI_DLLISPEC
 #if defined (_MSC_VER)
 #define DPI_DLLISPEC __declspec(dllimport)
 #else
 #define DPI_DLLISPEC
 #endif
+#endif
 
 /* Use to import a symbol into application */
+#ifndef DPI_DLLESPEC
 #if defined (_MSC_VER)
 #define DPI_DLLESPEC __declspec(dllexport)
 #else
 #define DPI_DLLESPEC
 #endif
+#endif
 
 /* Use to mark a function as external */
 #ifndef DPI_EXTERN

internals.pod

@@ -371,6 +371,13 @@ the documentation in:
 
   test_regress/t/driver.pl --help
 
+It is important to add tests for failures as well as success (for example to
+check that an error message is correctly triggered).
+
+Tests that fail should by convenition have the suffix C<_bad> in their name,
+and include C<fails =E<gt> 1> in either their C<compile> or C<execute> step as
+appropriate.
+
 Developers will also want to configure with two extra flags:
 
 =over 4
@@ -382,7 +389,7 @@ ensure no sloppy code gets added, however it can be painful when it comes
 to testing, since third party code used in the tests (e.g. SystemC) may not
 be warning free.
 
-=item --enable-long-tests
+=item --enable-longtests
 
 In addition to the standard C, SystemC and SystemPerl tests also run the
 tests in the C<test_vcs>, C<test_verilated> and C<test_regress> directories
@@ -690,7 +697,7 @@ in C<src/Makefile_obj.in> and reconfigure.
 
 The latest version is available from L<http://www.veripool.org/>.
 
-Copyright 2008-2012 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2008-2013 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 2007-2012 by Wilson Snyder.  This package is free software; you
+# Copyright 2007-2013 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 2007-2012 by Wilson Snyder.  This package is free software; you
+# Copyright 2007-2013 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

@@ -143,7 +143,7 @@ Displays this message and program version and exits.
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2012 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2005-2013 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

@@ -184,7 +184,7 @@ Displays this message and program version and exits.
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2012 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2005-2013 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 2007-2012 by Wilson Snyder.  This package is free software; you
+# Copyright 2007-2013 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

@@ -183,7 +183,7 @@ Runs a specific test stage (see the script).
 
 =head1 DISTRIBUTION
 
-Copyright 2009-2012 by Wilson Snyder.  This package is free software; you
+Copyright 2009-2013 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

@@ -28,7 +28,7 @@ invoke_atsim - Invoke tool under "modules" command
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2012 by Wilson Snyder.  This package is free software; you
+Copyright 2005-2013 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

@@ -28,7 +28,7 @@ invoke_iccr - Invoke tool under "modules" command
 
 =head1 DISTRIBUTION
 
-Copyright 2007-2012 by Wilson Snyder.  This package is free software; you
+Copyright 2007-2013 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

@@ -28,7 +28,7 @@ invoke_ncverilog - Invoke tool under "modules" command
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2012 by Wilson Snyder.  This package is free software; you
+Copyright 2005-2013 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

@@ -28,7 +28,7 @@ invoke_vcs - Invoke tool under "modules" command
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2012 by Wilson Snyder.  This package is free software; you
+Copyright 2005-2013 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 2010-2012 by Wilson Snyder.  This package is free software; you
+# Copyright 2010-2013 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/vtree_importer

@@ -331,7 +331,7 @@ Displays this message and program version and exits.
 
 =head1 DISTRIBUTION
 
-Copyright 2005-2012 by Wilson Snyder.  Verilator is free software; you can
+Copyright 2005-2013 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 2003-2012 by Wilson Snyder.  (Report bugs to
+This package is Copyright 2003-2013 by Wilson Snyder.  (Report bugs to
 L<http://www.veripool.org/>.)
 
 Verilator is free software; you can redistribute it and/or modify it under

src/.gdbinit

@@ -1,6 +1,6 @@
 # DESCRIPTION: Verilator: GDB startup file with useful defines
 #
-# Copyright 2012-2012 by Wilson Snyder. This program is free software; you can
+# Copyright 2012-2013 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/Makefile.in

@@ -7,7 +7,7 @@
 #
 #*****************************************************************************
 #
-# Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+# Copyright 2003-2013 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/Makefile_obj.in

@@ -7,7 +7,7 @@
 #
 #*****************************************************************************
 #
-# Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+# Copyright 2003-2013 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/V3Active.cpp

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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/V3Active.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2005-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2005-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2005-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2005-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2005-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2005-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2005-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2005-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.
@@ -356,6 +356,9 @@ public:
     bool isDpiUnsupported() const {
 	return (m_e==LOGIC || m_e==TIME);
     }
+    bool isDpiUnsignable() const {  // Can add "unsigned" to DPI
+	return (m_e==BYTE || m_e==SHORTINT || m_e==INT || m_e==LONGINT || m_e==INTEGER);
+    }
     bool isOpaque() const {  // IE not a simple number we can bit optimize
 	return (m_e==STRING || m_e==SCOPEPTR || m_e==CHARPTR || m_e==DOUBLE || m_e==FLOAT);
     }
@@ -502,11 +505,7 @@ class AstParseRefExp {
 public:
     enum en {
 	PX_NONE,	// Used in V3LinkParse only
-	PX_TEXT,	// Unknown ID component
-	PX_PREDOT,	// Module name or misc component above var/task/func/member
-	PX_VAR_MEM,	// Variable that must be a memory
-	PX_VAR_ANY,	// Variable/structure member
-	PX_FTASK	// Task/Function (AstParse::ftaskrefp() will be set)
+	PX_TEXT		// Unknown ID component
     };
     enum en m_e;
     inline AstParseRefExp() : m_e(PX_NONE) {}
@@ -515,7 +514,7 @@ public:
     operator en () const { return m_e; }
     const char* ascii() const {
 	static const char* names[] = {
-	    "","TEXT","PREDOT","VAR_MEM","VAR_ANY","FTASK"};
+	    "","TEXT","PREDOT"};
 	return names[m_e]; }
   };
   inline bool operator== (AstParseRefExp lhs, AstParseRefExp rhs) { return (lhs.m_e == rhs.m_e); }

src/V3AstNodes.cpp

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.
@@ -268,6 +268,9 @@ string AstVar::dpiArgType(bool named, bool forReturn) const {
 	}
     } else {
 	arg = basicp()->keyword().dpiType();
+	if (basicp()->keyword().isDpiUnsignable() && !basicp()->isSigned()) {
+	    arg = "unsigned "+arg;
+	}
 	if (!forReturn && isOutput()) arg += "*";
     }
     if (named) arg += " "+name();
@@ -856,11 +859,16 @@ void AstSenItem::dump(ostream& str) {
 void AstParseRef::dump(ostream& str) {
     this->AstNode::dump(str);
     str<<" ["<<expect().ascii()<<"]";
-    if (start()) str<<" [START]";
+}
+void AstPackageRef::dump(ostream& str) {
+    this->AstNode::dump(str);
+    if (packagep()) { str<<" pkg="<<(void*)packagep(); }
+    str<<" -> ";
+    if (packagep()) { packagep()->dump(str); }
+    else { str<<"UNLINKED"; }
 }
 void AstDot::dump(ostream& str) {
     this->AstNode::dump(str);
-    if (start()) str<<" [START]";
 }
 void AstActive::dump(ostream& str) {
     this->AstNode::dump(str);

src/V3AstNodes.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.
@@ -1135,10 +1135,17 @@ struct AstVarRef : public AstNodeVarRef {
     ASTNODE_NODE_FUNCS(VarRef, VARREF)
     virtual void dump(ostream& str);
     virtual V3Hash sameHash() const { return V3Hash(V3Hash(varp()->name()),V3Hash(hiername())); }
-    virtual bool same(AstNode* samep) const {
-	if (varScopep()) return varScopep()==samep->castVarRef()->varScopep();
-	else return (hiername()==samep->castVarRef()->hiername()
-		     && varp()->name()==samep->castVarRef()->varp()->name()); }
+    virtual bool same(AstNode* samep) const { return same(samep->castVarRef()); }
+    inline bool same(AstVarRef* samep) const {
+	if (varScopep()) return (varScopep()==samep->varScopep()
+				 && lvalue()==samep->lvalue());
+	else return (hiername()==samep->hiername()
+		     && varp()->name()==samep->varp()->name()
+		     && lvalue()==samep->lvalue()); }
+    inline bool sameNoLvalue(AstVarRef* samep) const {
+	if (varScopep()) return (varScopep()==samep->varScopep());
+	else return (hiername()==samep->hiername()
+		     && varp()->name()==samep->varp()->name()); }
     virtual int instrCount() const { return widthInstrs()*(lvalue()?1:instrCountLd()); }
     virtual string emitVerilog() { V3ERROR_NA; return ""; }  // Implemented specially
     virtual string emitC() { V3ERROR_NA; return ""; }
@@ -1360,15 +1367,16 @@ struct AstParseRef : public AstNode {
 private:
     AstParseRefExp	m_expect;		// Type we think it should resolve to
     string		m_name;
-    bool		m_start;		// Start of parseref stack
 public:
     AstParseRef(FileLine* fl, AstParseRefExp expect, const string& name, AstNode* lhsp, AstNodeFTaskRef* ftaskrefp)
-	:AstNode(fl), m_expect(expect), m_name(name) { setNOp1p(lhsp); setNOp2p(ftaskrefp); m_start=false; }
+	:AstNode(fl), m_expect(expect), m_name(name) { setNOp1p(lhsp); setNOp2p(ftaskrefp); }
     ASTNODE_NODE_FUNCS(ParseRef, PARSEREF)
     virtual void dump(ostream& str);
     virtual string name() const { return m_name; }		// * = Var name
     virtual V3Hash sameHash() const { return V3Hash(V3Hash(m_expect),V3Hash(m_name)); }
-    virtual bool same(AstNode* samep) const { return expect() == samep->castParseRef()->expect() && m_name==samep->castParseRef()->m_name; }
+    virtual bool same(AstNode* samep) const {
+	return (expect() == samep->castParseRef()->expect()
+		&& m_name==samep->castParseRef()->m_name); }
     virtual string emitVerilog() { V3ERROR_NA; return ""; }
     virtual string emitC() { V3ERROR_NA; return ""; }
     virtual void name(const string& name) 	{ m_name = name; }
@@ -1378,26 +1386,44 @@ public:
     AstNode*	lhsp() 		const { return op1p(); }	// op1 = List of statements
     AstNode*	ftaskrefp()	const { return op2p(); }	// op2 = Function/task reference
     void ftaskrefp(AstNodeFTaskRef* nodep) { setNOp2p(nodep); }	// op2 = Function/task reference
-    bool start() const { return m_start; }
-    void start(bool flag) { m_start = flag; }
+};
+
+struct AstPackageRef : public AstNode {
+private:
+    AstPackage*	m_packagep;	// Package hierarchy
+public:
+    AstPackageRef(FileLine* fl, AstPackage* packagep)
+	: AstNode(fl), m_packagep(packagep) {}
+    ASTNODE_NODE_FUNCS(PackageRef, PACKAGEREF)
+    // METHODS
+    virtual bool broken() const { return !m_packagep || !m_packagep->brokeExists(); }
+    virtual void cloneRelink() { if (m_packagep && m_packagep->clonep()) {
+	m_packagep = m_packagep->clonep()->castPackage();
+    }}
+    virtual bool same(AstNode* samep) const {
+	return (m_packagep==samep->castPackageRef()->m_packagep); }
+    virtual V3Hash sameHash() const { return V3Hash(V3Hash(m_packagep)); }
+    virtual void dump(ostream& str=cout);
+    AstPackage* packagep() const { return m_packagep; }
+    void packagep(AstPackage* nodep) { m_packagep=nodep; }
 };
 
 struct AstDot : public AstNode {
     // A dot separating paths in an AstXRef, AstFuncRef or AstTaskRef
     // These are eliminated in the link stage
-private:
-    bool		m_start;		// Start of parseref stack
 public:
     AstDot(FileLine* fl, AstNode* lhsp, AstNode* rhsp)
-	:AstNode(fl) { setOp1p(lhsp); setOp2p(rhsp); m_start=false; }
+	:AstNode(fl) { setOp1p(lhsp); setOp2p(rhsp); }
     ASTNODE_NODE_FUNCS(Dot, DOT)
+    static AstNode* newIfPkg(FileLine*fl, AstPackage* packagep, AstNode* rhsp) {  // For parser, make only if non-null package
+	if (!packagep) return rhsp;
+	return new AstDot(fl, new AstPackageRef(fl, packagep), rhsp);
+    }
     virtual void dump(ostream& str);
     virtual string emitVerilog() { V3ERROR_NA; return ""; }
     virtual string emitC() { V3ERROR_NA; return ""; }
     AstNode* lhsp() const { return op1p(); }
     AstNode* rhsp() const { return op2p(); }
-    bool start() const { return m_start; }
-    void start(bool flag) { m_start = flag; }
 };
 
 //######################################################################
@@ -1467,11 +1493,7 @@ public:
     class Initial {};		// for creator type-overload selection
     class Settle {};		// for creator type-overload selection
     class Never {};		// for creator type-overload selection
-    AstSenItem(FileLine* fl, AstEdgeType edgeType, AstNodeVarRef* varrefp)
-	: AstNodeSenItem(fl), m_edgeType(edgeType) {
-	setOp1p(varrefp);
-    }
-    AstSenItem(FileLine* fl, AstEdgeType edgeType, AstParseRef* varrefp)
+    AstSenItem(FileLine* fl, AstEdgeType edgeType, AstNode* varrefp)
 	: AstNodeSenItem(fl), m_edgeType(edgeType) {
 	setOp1p(varrefp);
     }
@@ -1906,7 +1928,7 @@ public:
     bool hidden() const { return m_hidden; }
 };
 
-struct AstDisplay : public AstNode {
+struct AstDisplay : public AstNodeStmt {
     // Parents: stmtlist
     // Children: file which must be a varref
     // Children: SFORMATF to generate print string
@@ -1914,7 +1936,7 @@ private:
     AstDisplayType	m_displayType;
 public:
     AstDisplay(FileLine* fileline, AstDisplayType dispType, const string& text, AstNode* filep, AstNode* exprsp)
-	: AstNode (fileline) {
+	: AstNodeStmt (fileline) {
 	setOp1p(new AstSFormatF(fileline,text,true,exprsp));
 	setNOp3p(filep);
 	m_displayType = dispType;
@@ -1969,11 +1991,11 @@ struct AstSFormat : public AstNode {
     void 	lhsp(AstNode* nodep) { setOp3p(nodep); }
 };
 
-struct AstSysIgnore : public AstNode {
+struct AstSysIgnore : public AstNodeStmt {
     // Parents: stmtlist
     // Children: varrefs or exprs
     AstSysIgnore(FileLine* fileline, AstNode* exprsp)
-	: AstNode (fileline) { addNOp1p(exprsp); }
+	: AstNodeStmt (fileline) { addNOp1p(exprsp); }
     ASTNODE_NODE_FUNCS(SysIgnore, SYSIGNORE)
     virtual string verilogKwd() const { return "$ignored"; }
     virtual bool isGateOptimizable() const { return false; }  // Though deleted before opt

src/V3Begin.cpp

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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/V3Begin.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2004-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2004-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2004-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2004-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2008-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2008-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.
@@ -83,7 +83,7 @@ private:
 	if (vscp->user1p()) return ((AstVarScope*)vscp->user1p());
 	AstVar* varp = vscp->varp();
 	if (!varp->width1()) varp->v3error("Unsupported: Clock edge on non-single bit signal: "<<varp->prettyName());
-	string newvarname = ((string)"__Vclklast__"+vscp->scopep()->nameDotless()+"__"+varp->shortName());
+	string newvarname = ((string)"__Vclklast__"+vscp->scopep()->nameDotless()+"__"+varp->name());
 	AstVar* newvarp = new AstVar (vscp->fileline(), AstVarType::MODULETEMP, newvarname, VFlagLogicPacked(), 1);
 	m_modp->addStmtp(newvarp);
 	AstVarScope* newvscp = new AstVarScope(vscp->fileline(), m_scopep, newvarp);

src/V3Clock.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2010-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2010-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2010-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2010-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.
@@ -415,8 +415,7 @@ private:
 	    // Avoid comparing widthMin's, which results in lost optimization attempts
 	    // If cleanup sameTree to be smarter, this can be restored.
 	    //return node1p->sameTree(node2p);
-	    return node1p->castVarRef()->varp() == node2p->castVarRef()->varp()
-		&& node1p->castVarRef()->lvalue() == node2p->castVarRef()->lvalue();
+	    return node1p->same(node2p);
 	} else {
 	    return false;
 	}
@@ -431,7 +430,7 @@ private:
 	AstVarRef* elsevarp = elsep->lhsp()->castVarRef();
 	if (!ifvarp || !elsevarp) return false;
 	if (ifvarp->isWide()) return false;  // Would need temporaries, so not worth it
-	if (ifvarp->varp() != elsevarp->varp()) return false;
+	if (!ifvarp->sameTree(elsevarp)) return false;
 	return true;
     }
     bool operandIfIf(AstNodeIf* nodep) {
@@ -776,7 +775,7 @@ private:
 	AstSel* sel2p = nextp->lhsp()->castSel(); if (!sel2p) return false;
 	AstVarRef* varref1p = sel1p->fromp()->castVarRef(); if (!varref1p) return false;
 	AstVarRef* varref2p = sel2p->fromp()->castVarRef(); if (!varref2p) return false;
-	if (varref1p->varp() != varref2p->varp()) return false;
+	if (!varref1p->sameTree(varref2p)) return false;
 	AstConst* con1p = sel1p->lsbp()->castConst(); if (!con1p) return false;
 	AstConst* con2p = sel2p->lsbp()->castConst(); if (!con2p) return false;
 	// We need to make sure there's no self-references involved in either
@@ -827,7 +826,7 @@ private:
     bool replaceNodeAssign(AstNodeAssign* nodep) {
 	if (nodep->lhsp()->castVarRef()
 	    && nodep->rhsp()->castVarRef()
-	    && nodep->lhsp()->sameTree(nodep->rhsp())
+	    && nodep->lhsp()->castVarRef()->sameNoLvalue(nodep->rhsp()->castVarRef())
 	    && !nodep->castAssignDly()) {
 	    // X = X.  Quite pointless, though X <= X may override another earlier assignment
 	    if (nodep->castAssignW()) {

src/V3Const.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.cpp

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.
@@ -1368,7 +1368,16 @@ void EmitCImp::emitVarResets(AstNodeModule* modp) {
 		    puts(varp->name());
 		    for (int v=0; v<vects; ++v) puts( "[__Vi"+cvtToStr(v)+"]");
 		    if (zeroit) {
-			puts(" = 0;\n");
+			// We want to force an initial edge on uninitialized clocks (from 'X' to
+			// whatever the first value is). Since the class is instantiated before
+			// initial blocks are evaluated, this should not clash with any initial
+			// block settings. Clocks are always BIT datatypes, so zeroit is true.
+			if (v3Global.opt.xInitialEdge()
+			    && (0 == varp->name().find("__Vclklast__"))) {
+			    puts(" = 1;\n");
+			} else {
+			    puts(" = 0;\n");
+			}
 		    } else {
 			puts(" = VL_RAND_RESET_");
 			emitIQW(varp);

src/V3EmitC.h

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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

@@ -6,7 +6,7 @@
 //
 //*************************************************************************
 //
-// Copyright 2003-2012 by Wilson Snyder.  This program is free software; you can
+// Copyright 2003-2013 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.