Version bump; commentary

git-svn-id: file://localhost/svn/verilator/trunk/verilator@942 77ca24e4-aefa-0310-84f0-b9a241c72d87

Changes

@@ -3,6 +3,18 @@ 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 3.652 6/21/2007
+
+**** Report as many warning types as possible before exiting.
+
+**** Support V2K portlists with "input a,b,...".  [Mark Nodine]
+
+**** Support V2K function/task argument lists.
+
+**** Optimize constant $display arguments.
+
+**** Fix Preprocessor dropping some `line directives.  [Mark Nodine]
+
 * Verilator 3.651 5/22/2007
 
 ***  Added verilator_profcfunc utility.  [Gene Weber]

bin/verilator

@@ -214,6 +214,66 @@ C++, and linked with the Verilated files.
 
 The resulting executable will perform the actual simulation.
 
+=head1 ARGUMENT SUMMARY
+
+This is a short summary of the arguments to Verilator.  See the detailed
+descriptions in the next sections for more information.
+
+    {file.v}                    Verilog top level filenames
+    {file.c/cc/cpp}             Optional C++ files to link in
+
+    --assert                    Enable all assertions
+    --bin <filename>            Override Verilator binary
+    --cc                        Create C++ output
+    --compiler <compiler-name>  Tune for specified C++ compiler
+    --coverage                  Enable all coverage
+    --coverage-line             Enable line coverage
+    --coverage-user             Enable PSL/SVL user coverage
+    -D<var>[=<value>]           Set preprocessor define
+    --debug                     Enable debugging
+    --debug-check               Enable debugging assertions
+    --dump-tree                 Enable dumping .tree files
+    -E                          Preprocess, but do not compile
+    --exe                       Link to create executable
+    -f <file>                   Parse options from a file
+    --help                      Display this help.
+    -I<dir>                     Directory to search for includes
+    --inhibit-sim               Create function to turn off sim
+    --inline-mult <value>       Tune module inlining
+    --lint-only                 Lint, but do not make output
+    --MMD                       Create .d dependency files
+    --MP                        Create phony dependency targets
+    --Mdir <directory>          Name of output object directory
+    --mod-prefix <topname>      Name to prepend to lower classes
+    --no-skip-identical         Disable skipping identical output
+    -O0                         Disable optimizations
+    -O3                         High performance optimizations
+    -O<optimization-letter>     Selectable optimizations
+    --output-split <bytes>      Split .cpp files into pieces
+    --output-split-cfuncs <statements>   Split .ccp functions
+    --pins64                    Use uint64_t's for 33-64 bit sigs
+    --prefix <topname>          Name of top level class
+    --profile-cfuncs            Name functions for profiling
+    --private                   Debugging; see docs
+    --psl                       Enable PSL parsing
+    --public                    Debugging; see docs
+    --sc                        Create SystemC output
+    --sp                        Create SystemPerl output
+    --stats                     Create statistics file
+    --trace                     Enable waveform creation
+    --trace-depth <levels>      Depth of tracing
+    -U<var>                     Undefine preprocessor define
+    --underline-zero            Zero signals with leading _'s
+    -v <filename>               Verilog library
+    -Werror-<message>           Convert warning to error
+    -Wno-<message>              Disable warning
+    -x-assign <mode>            Initially assign Xs to this value
+    -y <dir>                    Directory to search for modules
+
+    +define+<var>+<value>       Set preprocessor define
+    +incdir+<dir>               Directory to search for includes
+    +libext+<ext>+[ext]...      Extensions for finding modules
+
 =head1 ARGUMENTS
 
 =over 4
@@ -320,6 +380,12 @@ internal assertions, debugging messages, and intermediate form dump files.
 Rarely needed.  Enable internal debugging assertion checks, without
 changing debug verbosity.  Enabled automatically when --debug specified.
 
+=item --dump-tree
+
+Rarely needed.  Enable writing .tree debug files.  This is enabled with
+--debug, so "--debug --no-dump-tree" may be useful if the dump files are
+large and not desired.
+
 =item -E
 
 Preprocess the source code, but do not compile, as with 'gcc -E'.  Output
@@ -577,7 +643,7 @@ We'll compile this example into C++.
       int main(int argc, char **argv, char **env) {
           Vour* top = new Vour;
           while (!Verilated::gotFinish()) { top->eval(); }
-          exit(0);	
+          exit(0);
       }
     EOF
 
@@ -637,7 +703,7 @@ 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); }
-          exit(0);	
+          exit(0);
       }
     EOF
 
@@ -1195,7 +1261,7 @@ lint_restore*/.  For example:
 If SOME_WARNING was on before the lint_off, it will now be restored to on,
 and if it was off before the lint_off it will remain off.
 
-=item /*verilator no_inline_task*/ 
+=item /*verilator no_inline_task*/
 
 Used in a function or task variable definition section to specify the
 function or task should not be inlined into where it is used.  This may
@@ -1870,6 +1936,25 @@ so your simulator shouldn't have to be -- and Verilator is closer to the
 synthesis interpretation, so this is a good thing for getting working
 silicon.
 
+=item May programs I create with Verilator remain under my own copyright?
+
+Yes, it's just like using GCC on your programs.  If you change Verilator
+itself, you must make the source code available under the GNU Public
+License.  However, the include and generated files use the GNU Lesser
+Public License, which means that files using them are NOT required to be released.
+
+You also have the option of using the Perl Artistic License, which again
+does not require you release your Verilog or generated code.
+
+=item Why is running Verilator so slow?
+
+Verilator needs more memory then the resulting simulator will require, as
+Verilator creates internally all of the state of the resulting simulator in
+order to optimize it.  If it takes more then a minute or so (and you're not
+using --debug), see if your machine is paging; most likely you need to run
+it on a machine with more memory.  Verilator is a full 64 bit application
+and may use more then 4GB, but about 1GB is the maximum typically needed.
+
 =item How do I generate waveforms (traces) in C++?
 
 See the next question for SystemC mode.

include/verilated.cpp

@@ -3,7 +3,7 @@
 //
 // Copyright 2003-2007 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
-// General Public License or the Perl Artistic License.
+// Lesser General Public License or the Perl Artistic License.
 //
 // Verilator is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -31,7 +31,7 @@
 //===========================================================================
 // Global variables
 
-int  Verilated::s_randReset = false;
+int  Verilated::s_randReset = 0;
 int  Verilated::s_debug = 1;
 bool Verilated::s_calcUnusedSigs = false;
 bool Verilated::s_gotFinish = false;

include/verilated.h

@@ -3,7 +3,7 @@
 //
 // Copyright 2003-2007 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
-// General Public License or the Perl Artistic License.
+// Lesser General Public License or the Perl Artistic License.
 //
 // Verilator is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of

include/verilated.mk.in

@@ -4,7 +4,7 @@
 #
 # Copyright 2003-2007 by Wilson Snyder. This program is free software; you can
 # redistribute it and/or modify it under the terms of either the GNU
-# General Public License or the Perl Artistic License.
+# Lesser General Public License or the Perl Artistic License.
 ######################################################################
 
 PERL = @PERL@

include/verilated.v

@@ -7,7 +7,7 @@
 //
 // Copyright 2003-2007 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
-// General Public License or the Perl Artistic License.
+// Lesser General Public License or the Perl Artistic License.
 //
 // This is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of

include/verilatedos.h

@@ -3,7 +3,7 @@
 //
 // Copyright 2003-2007 by Wilson Snyder. This program is free software; you can
 // redistribute it and/or modify it under the terms of either the GNU
-// General Public License or the Perl Artistic License.
+// Lesser General Public License or the Perl Artistic License.
 //
 // Verilator is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of

src/V3Assert.cpp

@@ -63,6 +63,9 @@ private:
 	AstNode* timesp = nodep->exprsp(); if (timesp) timesp->unlinkFrBack();
 	timesp = timesp->addNext(new AstTime(nodep->fileline()));
 	nodep->exprsp(timesp);
+	if (!nodep->scopeNamep() && nodep->name().find("%m") != string::npos) {
+	    nodep->scopeNamep(new AstScopeName(nodep->fileline()));
+	}
     }
 
     AstNode* newIfAssertOn(AstNode* nodep) {

src/V3AstNodes.h

@@ -1271,11 +1271,8 @@ public:
     bool	addNewline() const { return displayType().addNewline(); }  // * = Add a newline for $display
     AstNode*	filep() const { return op2p(); }
     void 	filep(AstNodeVarRef* nodep) { setNOp2p(nodep); }
-    AstNode*	scopeAttrp() const { return op3p(); }
-    AstText*	scopeTextp() const { return op3p()->castText(); }
-    void scopeAttrp(AstNode* nodep) { addOp3p(nodep); }
-    bool	needScopeTracking() { return (displayType().needScopeTracking()
-					      || name().find("%m") != string::npos); }
+    AstScopeName* scopeNamep() const { return op3p()->castScopeName(); }
+    void 	scopeNamep(AstNode* nodep) { setNOp3p(nodep); }
 };
 
 struct AstFClose : public AstNodeStmt {
@@ -1726,6 +1723,22 @@ public:
     int		dimension() const { return m_dimension; }
 };
 
+struct AstScopeName : public AstNode {
+    // For display %m
+    // Parents:  DISPLAY
+    // Children: TEXT
+    AstScopeName(FileLine* fl)
+	: AstNode(fl) {}
+    virtual ~AstScopeName() {}
+    virtual AstType type() const { return AstType::SCOPENAME;}
+    virtual AstNode* clone() { return new AstScopeName(*this); }
+    virtual void accept(AstNVisitor& v, AstNUser* vup=NULL) { v.visit(this,vup); }
+    virtual V3Hash sameHash() const { return V3Hash(); }
+    virtual bool same(AstNode* samep) const { return true; }
+    AstText*	scopeAttrp() const { return op1p()->castText(); }
+    void 	scopeAttrp(AstNode* nodep) { addOp1p(nodep); }
+};
+
 //======================================================================
 // non-ary ops
 

src/V3Begin.cpp

@@ -131,10 +131,10 @@ private:
 	nodep->replaceWith(newp);
 	nodep->deleteTree(); nodep=NULL;
     }
-    virtual void visit(AstDisplay* nodep, AstNUser*) {
+    virtual void visit(AstScopeName* nodep, AstNUser*) {
 	// If there's a %m in the display text, we add a special node that will contain the name()
 	// Similar code in V3Inline
-	if (m_beginScope != "" && nodep->needScopeTracking()) {
+	if (m_beginScope != "") {
 	    // To keep correct visual order, must add before other Text's
 	    AstNode* afterp = nodep->scopeAttrp();
 	    if (afterp) afterp->unlinkFrBackWithNext();

src/V3Clean.cpp

@@ -196,6 +196,9 @@ private:
     virtual void visit(AstText* nodep, AstNUser*) {
 	setClean (nodep, true);
     }
+    virtual void visit(AstScopeName* nodep, AstNUser*) {
+	setClean (nodep, true);
+    }
     virtual void visit(AstSel* nodep, AstNUser*) {
 	operandTriop(nodep);
         setClean (nodep, nodep->cleanOut());

src/V3Const.cpp

@@ -802,7 +802,12 @@ private:
 	if (nodep->sensp()->castConst()
 	    || (nodep->varrefp() && nodep->varrefp()->varp()->isParam())) {
 	    // Constants in sensitivity lists may be removed (we'll simplify later)
-	    AstSenItem* newp = new AstSenItem(nodep->fileline(), AstSenItem::Never());
+	    AstSenItem* newp;
+	    if (nodep->isClocked()) {  // A constant can never get a pos/negexge
+		newp = new AstSenItem(nodep->fileline(), AstSenItem::Never());
+	    } else {  // Otherwise it may compute a result that needs to settle out
+		newp = new AstSenItem(nodep->fileline(), AstSenItem::Combo());
+	    }
 	    nodep->replaceWith(newp);
 	    nodep->deleteTree(); nodep=NULL;
 	} else if (nodep->sensp()->castNot()) {
@@ -938,6 +943,63 @@ private:
 	}
     }
 
+    virtual void visit(AstDisplay* nodep, AstNUser*) {
+	// Substitute constants into displays.  The main point of this is to
+	// simplify assertion methodologies which call functions with display's.
+	// This eliminates a pile of wide temps, and makes the C a whole lot more readable.
+	nodep->iterateChildren(*this);
+	bool anyconst = false;
+	for (AstNode* argp = nodep->exprsp(); argp; argp=argp->nextp()) {
+	    if (argp->castConst()) { anyconst=true; break; }
+	}
+	if (anyconst) {
+	    //UINFO(9,"  Display in  "<<nodep->text()<<endl);
+	    string dispout = "";
+	    string fmt = "";
+	    bool inPct = false;
+	    AstNode* argp = nodep->exprsp();
+	    for (const char* inp = nodep->text().c_str(); *inp; inp++) {
+		char ch = *inp;   // Breaks with iterators...
+		if (!inPct && ch=='%') {
+		    inPct = true;
+		    fmt = ch;
+		} else if (inPct && isdigit(ch)) {
+		    fmt += ch;
+		} else if (inPct) {
+		    inPct = false;
+		    fmt += ch;
+		    switch (tolower(ch)) {
+		    case '%': break;  // %% - just output a %
+		    case 'm': break;  // %m - auto insert "name"
+		    default:  // Most operators, just move to next argument
+			if (argp) {
+			    AstNode* nextp=argp->nextp();
+			    if (argp && argp->castConst()) { // Convert it
+				string out = argp->castConst()->num().displayed(fmt);
+				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++) {
+					if (*pos == '%') fmt += '%';
+					fmt += *pos;
+				    }
+				}
+				argp->unlinkFrBack()->deleteTree();
+			    }
+			    argp=nextp;
+			}
+			break;
+		    } // switch
+		    dispout += fmt;
+		} else {
+		    dispout += ch;
+		}
+	    }
+	    nodep->text(dispout);
+	    //UINFO(9,"  Display out "<<nodep->text()<<endl);
+	}
+    }
+
     virtual void visit(AstWhile* nodep, AstNUser*) {
 	nodep->iterateChildren(*this);
 	if (nodep->condp()->isZero()) {

src/V3EmitC.cpp

@@ -388,7 +388,7 @@ public:
     }
     virtual void visit(AstMulS* nodep, AstNUser* vup) {
 	if (nodep->widthWords() > VL_MULS_MAX_WORDS) {
-	    nodep->v3error("Signed multiply of "<<nodep->width()<<" bits exceeds hardcoded limit VL_MULS_MAX_WORDS in verilatedos.h\n");
+	    nodep->v3error("Unsupported: Signed multiply of "<<nodep->width()<<" bits exceeds hardcoded limit VL_MULS_MAX_WORDS in verilatedos.h\n");
 	}
 	visit(nodep->castNodeBiop(), vup);
     }
@@ -1052,16 +1052,17 @@ void EmitCStmts::visit(AstDisplay* nodep, AstNUser*) {
 		// Spec: h d o b c l
 		case 'b': displayArg(nodep,&elistp,fmt,'b'); break;
 		case 'c': displayArg(nodep,&elistp,fmt,'c'); break;
+		case 't':
 		case 'd': displayArg(nodep,&elistp,fmt,'u'); break;  // Unsigned decimal
 		case 'o': displayArg(nodep,&elistp,fmt,'o'); break;
 		case 'h':
 		case 'x': displayArg(nodep,&elistp,fmt,'x'); break;
 		case 's': displayArg(nodep,&elistp,fmt,'s'); break;
-		case 't': displayArg(nodep,&elistp,fmt,'u'); break;
 		case 'm': {
 		    emitDispState.pushFormat("%s");
 		    emitDispState.pushArg(NULL, "vlSymsp->name(");
-		    for (AstText* textp=nodep->scopeTextp(); textp; textp=textp->nextp()->castText()) {
+		    if (!nodep->scopeNamep()) nodep->v3fatalSrc("Display with %m but no AstScopeName");
+		    for (AstText* textp=nodep->scopeNamep()->scopeAttrp(); textp; textp=textp->nextp()->castText()) {
 			emitDispState.pushFormat(textp->text());
 		    }
 		    break;

src/V3EmitV.cpp

@@ -246,6 +246,8 @@ public:
     virtual void visit(AstText* nodep, AstNUser*) {
 	ofp()->putsNoTracking(nodep->text());
     }
+    virtual void visit(AstScopeName* nodep, AstNUser*) {
+    }
     virtual void visit(AstCStmt* nodep, AstNUser*) {
 	putbs("$_CSTMT(");
 	nodep->bodysp()->iterateAndNext(*this);

src/V3Error.cpp

@@ -34,7 +34,8 @@
 
 FileLine FileLine::s_defaultFileLine = FileLine(EmptySecret());
 
-int V3Error::s_errcnt = 0;
+int V3Error::s_errCount = 0;
+int V3Error::s_warnCount = 0;
 int V3Error::s_debugDefault = 0;
 ostringstream V3Error::s_errorStr;		// Error string being formed
 V3ErrorCode V3Error::s_errorCode = V3ErrorCode::FATAL;
@@ -187,25 +188,46 @@ string V3Error::lineStr (const char* filename, int lineno) {
     return out.str();
 }
 
+void V3Error::incWarnings() {
+    s_warnCount++;
+    if (errorOrWarnCount() == MAX_ERRORS) {  // Not >= as would otherwise recurse
+	v3fatal ("Exiting due to too many errors encountered\n");
+    }
+}
+
 void V3Error::incErrors() {
-    s_errcnt++;
-    if (errorCount() == MAX_ERRORS) {  // Not >= as would otherwise recurse
+    s_errCount++;
+    if (errorOrWarnCount() == MAX_ERRORS) {  // Not >= as would otherwise recurse
 	v3fatal ("Exiting due to too many errors encountered\n");
     }
 }
 
 void V3Error::abortIfErrors() {
     if (errorCount()) {
-	v3fatal ("Exiting due to "<<dec<<errorCount()<<" warning(s)\n");
+	v3fatal ("Exiting due to "<<dec<<errorOrWarnCount()<<" warning(s)\n");
     }
 }
 
+void V3Error::abortIfWarnings() {
+    if (errorOrWarnCount()) {
+	v3fatal ("Exiting due to "<<dec<<errorOrWarnCount()<<" warning(s)\n");
+    }
+}
+
+bool V3Error::isError(V3ErrorCode code) {
+    if (code==V3ErrorCode::SUPPRESS) return false;
+    else if (code==V3ErrorCode::FATAL) return true;
+    else if (code==V3ErrorCode::ERROR) return true;
+    else if (code<V3ErrorCode::FIRST_WARN
+	     || s_pretendError[code]) return true;
+    else return false;
+}
+
 string V3Error::msgPrefix(V3ErrorCode code) {
     if (code==V3ErrorCode::SUPPRESS) return "-arning-suppressed: ";
     else if (code==V3ErrorCode::FATAL) return "%Error: ";
     else if (code==V3ErrorCode::ERROR) return "%Error: ";
-    else if (code<V3ErrorCode::FIRST_WARN
-	     || s_pretendError[code]) return "%Error-"+(string)code.ascii()+": ";
+    else if (isError(code)) return "%Error-"+(string)code.ascii()+": ";
     else return "%Warning-"+(string)code.ascii()+": ";
 }
 
@@ -258,7 +280,8 @@ void V3Error::v3errorEnd (ostringstream& sstr) {
 		    cerr<<msgPrefix()<<"else you may end up with different sim results."<<endl;
 		}
 	    }
-	    incErrors();
+	    if (isError(s_errorCode)) incErrors();
+	    else incWarnings();
 	    if (s_errorCode==V3ErrorCode::FATAL) {
 		static bool inFatal = false;
 		if (!inFatal) {

src/V3Error.h

@@ -104,11 +104,13 @@ class V3Error {
     static bool 	s_describedEachWarn[V3ErrorCode::MAX]; // Told user specifics about this warning
     static bool 	s_pretendError[V3ErrorCode::MAX]; // Pretend this warning is an error
     static int		s_debugDefault;		// Default debugging level
-    static int		s_errcnt;		// Error count
+    static int		s_errCount;		// Error count
+    static int		s_warnCount;		// Error count
     static ostringstream s_errorStr;		// Error string being formed
     static V3ErrorCode	s_errorCode;		// Error string being formed will abort
     enum MaxErrors { 	MAX_ERRORS = 50 };	// Fatal after this may errors
     static void	incErrors();
+    static void	incWarnings();
 
     V3Error() { cerr<<("Static class"); abort(); }
 
@@ -118,12 +120,16 @@ class V3Error {
     static void		debugDefault(int level) { s_debugDefault = level; }
     static int		debugDefault() { return s_debugDefault; }
     static string	msgPrefix(V3ErrorCode code=s_errorCode);	// returns %Error/%Warn
-    static int		errorCount() { return s_errcnt; }
+    static int		errorCount() { return s_errCount; }
+    static int		warnCount() { return s_warnCount; }
+    static int		errorOrWarnCount() { return errorCount()+warnCount(); }
     // METHODS
     static void		init();
     static void		abortIfErrors();
+    static void		abortIfWarnings();
     static void		suppressThisWarning();	// Suppress next %Warn if user has it off
     static void		pretendError(V3ErrorCode code, bool flag) { s_pretendError[code]=flag; }
+    static bool		isError(V3ErrorCode code);
     static string 	v3sform (const char* format, ...);
     static string	lineStr (const char* filename, int lineno);
     static V3ErrorCode	errorCode() { return s_errorCode; }

src/V3Inline.cpp

@@ -233,10 +233,10 @@ private:
 	}
 	nodep->iterateChildren(*this);
     }
-    virtual void visit(AstDisplay* nodep, AstNUser*) {
+    virtual void visit(AstScopeName* nodep, AstNUser*) {
 	// If there's a %m in the display text, we add a special node that will contain the name()
 	// Similar code in V3Begin
-	if (m_cellp && nodep->needScopeTracking()) {
+	if (m_cellp) {
 	    // To keep correct visual order, must add before other Text's
 	    AstNode* afterp = nodep->scopeAttrp();
 	    if (afterp) afterp->unlinkFrBackWithNext();

src/V3LinkResolve.cpp

@@ -335,6 +335,10 @@ private:
 		|| nodep->displayType() == AstDisplayType::FATAL)) {
 	    nodep->v3error(nodep->verilogKwd()+" only allowed under a assertion.");
 	}
+	if (nodep->displayType().needScopeTracking()
+	    || nodep->name().find("%m") != string::npos) {
+	    nodep->scopeNamep(new AstScopeName(nodep->fileline()));
+	}
     }
 
     virtual void visit(AstScCtor* nodep, AstNUser*) {

src/V3Number.cpp

@@ -303,7 +303,7 @@ V3Number& V3Number::setMask(int nbits) {
 }
 
 //======================================================================
-// ACCESSORS
+// ACCESSORS - as strings
 
 string V3Number::ascii(bool prefixed, bool cleanVerilog) const {
     ostringstream out;
@@ -334,34 +334,115 @@ string V3Number::ascii(bool prefixed, bool cleanVerilog) const {
     
     if (binary) {
 	out<<"b";
-	int bit=width()-1;
-	while (bit && bitIs0(bit)) bit--;
-	for(; bit>=0; --bit) {
-	    if (bitIs0(bit)) out<<'0';
-	    else if (bitIs1(bit)) out<<'1';
-	    else if (bitIsZ(bit)) out<<'z';
-	    else out<<'x';
-	}
+	out<<displayed("%0b");
     }
     else {
 	if (prefixed) out<<"h";
 	// Always deal with 4 bits at once.  Note no 4-state, it's above.
-	int hexStart = width()-1;
-	while (hexStart && bitIs0(hexStart)) hexStart--;
-	while ((hexStart&3)!=3) hexStart++;
-	for(int bit=hexStart; bit>0; ) {
-	    int v = 0;
-	    if (bitIs1(bit)) v |= 8; bit--;
-	    if (bitIs1(bit)) v |= 4; bit--;
-	    if (bitIs1(bit)) v |= 2; bit--;
-	    if (bitIs1(bit)) v |= 1; bit--;
-	    if (v>=10) out<<(char)('a'+v-10);
-	    else out<<(char)('0'+v);
-	}
+	out<<displayed("%0h");
     }
     return out.str();
 }
 
+string V3Number::displayed(const string& vformat) const {
+    string::const_iterator pos = vformat.begin();
+    UASSERT(pos != vformat.end() && pos[0]=='%', "display with non format argument "<<*this);
+    pos++;
+    string fmtsize;
+    for (; pos != vformat.end() && isdigit(pos[0]); pos++) {
+	fmtsize += pos[0];
+    }
+    string str;
+    char code = tolower(pos[0]);
+    switch (code) {
+    case 'b': {
+	int bit = width()-1;
+	if (fmtsize == "0") while (bit && bitIs0(bit)) bit--;
+	for (; bit>=0; bit--) {
+	    if (bitIs0(bit)) str+='0';
+	    else if (bitIs1(bit)) str+='1';
+	    else if (bitIsZ(bit)) str+='z';
+	    else str+='x';
+	}
+	return str;
+    }
+    case 'o': {
+	int bit = width()-1;
+	if (fmtsize == "0") while (bit && bitIs0(bit)) bit--;
+	while ((bit%3)!=2) bit++;
+	for (; bit>0; bit -= 3) {
+	    int v = bitsValue(bit-2, 3);
+	    str += (char)('0'+v);
+	}
+	return str;
+    }
+    case 'h':
+    case 'x': {
+	int bit = width()-1;
+	if (fmtsize == "0") while (bit && bitIs0(bit)) bit--;
+	while ((bit%4)!=3) bit++;
+	for (; bit>0; bit -= 4) {
+	    int v = bitsValue(bit-3, 4);
+	    if (v>=10) str += (char)('a'+v-10);
+	    else str += (char)('0'+v);
+	}
+	return str;
+    }
+    case 'c': {
+	if (this->width()>8) m_fileline->v3error("$display of char format of > 8 bit value");
+	int v = bitsValue(0, 8);
+	str += (char)(v);
+	return str;
+    }
+    case 's': {
+	// Spec says always drop leading zeros, this isn't quite right, we space pad.
+	int bit=this->width()-1;
+	bool start=true;
+	while ((bit%8)!=7) bit++;
+	for (; bit>=0; bit -= 8) {
+	    int v = bitsValue(bit-7, 8);
+	    if (!start || v) {
+		str += (char)((v==0)?' ':v);
+		start = false;	// Drop leading 0s
+	    } else {
+		if (fmtsize != "0") str += ' ';
+	    }
+	}
+	return str;
+    }
+    case '~': // Signed decimal
+    case 't':
+    case 'd': { // Unsigned decimal
+	bool issigned = (code == '~');
+	if (fmtsize == "") {
+	    double mantissabits = this->width() - (issigned?1:0);
+	    double maxval = pow(2.0, mantissabits);
+	    double dchars = log10(maxval)+1.0;
+	    if (issigned) dchars++;  // space for sign
+	    fmtsize = cvtToStr(int(dchars));
+	}
+	if (width() > 64) {
+	    m_fileline->v3error("Unsupported: $display of dec format of > 64 bit results (use hex format instead)");
+	    return "ERR";
+	}
+	if (issigned) {
+	    str = cvtToStr(asSQuad());
+	} else {
+	    str = cvtToStr(asQuad());
+	}
+	int intfmtsize = atoi(fmtsize.c_str());
+	while ((int)(str.length()) < intfmtsize) str = " "+str;
+	return str;
+    }
+    default:
+	m_fileline->v3fatalSrc("Unknown $display format code for number: %"<<pos[0]);
+	return "ERR";
+    }
+}
+
+//======================================================================
+// ACCESSORS - as numbers
+
 uint32_t V3Number::asInt() const {
     UASSERT(!isFourState(),"asInt with 4-state "<<*this);
     UASSERT((width()<33 || (width()<65 && m_value[1]==0)), "Value too wide "<<*this);
@@ -369,18 +450,24 @@ uint32_t V3Number::asInt() const {
 }
 
 vlsint32_t V3Number::asSInt() const {
-    UASSERT(!isFourState(),"asSInt with 4-state "<<*this);
-    UASSERT((width()<33 || (width()<65 && m_value[1]==0)), "Value too wide "<<*this);
-    uint32_t signExtend = (-((m_value[0]) & (1UL<<(width()-1))));
-    uint32_t extended = m_value[0] | signExtend;
+    uint32_t v = asInt();
+    uint32_t signExtend = (-(v & (1UL<<(width()-1))));
+    uint32_t extended = v | signExtend;
     return (vlsint32_t)(extended);
 }
 
 vluint64_t V3Number::asQuad() const {
     UASSERT(!isFourState(),"asQuad with 4-state "<<*this);
     UASSERT(width()<65, "Value too wide "<<*this);
-    if (width()<=32) return ((vluint64_t)m_value[0]);
-    else return ((vluint64_t)m_value[1]<<VL_ULL(32)) | ((vluint64_t)m_value[0]);
+    if (width()<=32) return ((vluint64_t)(asInt()));
+    return ((vluint64_t)m_value[1]<<VL_ULL(32)) | ((vluint64_t)m_value[0]);
+}
+
+vlsint64_t V3Number::asSQuad() const {
+    vluint64_t v = asQuad();
+    vluint64_t signExtend = (-(v & (VL_ULL(1)<<(width()-1))));
+    vluint64_t extended = v | signExtend;
+    return (vlsint64_t)(extended);
 }
 
 uint32_t V3Number::asHash() const {

src/V3Number.h

@@ -94,6 +94,12 @@ private:
     bool bitIsZ (int bit) const {
 	if (bit>=m_width) return bitIsZ(m_width-1);
 	return ( (~m_value[bit/32] & (1UL<<(bit&31))) && (m_valueX[bit/32] & (1UL<<(bit&31))) ); }
+    uint32_t bitsValue(int lsb, int nbits) const {
+	uint32_t v=0;
+	for (int bitn=0; bitn<nbits; bitn++) { v |= (bitIs1(lsb+bitn)<<bitn); }
+	return v;
+    }
+
     int words() const { return ((width()+31)/32); }
 
 public:
@@ -112,6 +118,7 @@ public:
 
     // ACCESSORS
     string ascii(bool prefixed=true, bool cleanVerilog=false) const;
+    string displayed(const string& format) const;
     int width() const { return m_width; }
     int minWidth() const;	// Minimum width that can represent this number (~== log2(num)+1)
     bool sized() const { return m_sized; }
@@ -129,6 +136,7 @@ public:
     uint32_t asInt() const;
     vlsint32_t asSInt() const;
     vluint64_t asQuad() const;
+    vlsint64_t asSQuad() const;
     uint32_t asHash() const;
     uint32_t dataWord(int word) const;
     uint32_t countOnes() const;

src/V3PreLex.h

@@ -40,6 +40,7 @@
 #define VP_DEFINE	261
 #define VP_ELSE		262
 #define VP_ELSIF	263
+#define VP_LINE		264
 
 #define VP_SYMBOL	300
 #define VP_STRING	301

src/V3PreLex.l

@@ -73,7 +73,8 @@ psl		[p]sl
 	/**************************************************************/
 %%
 
-<INITIAL>^{ws}*"`line"{ws}+.*{crnl}	{ V3PreLex::s_currentLexp->lineDirective(yytext); }
+<INITIAL>^{ws}*"`line"{ws}+.*{crnl}	{ V3PreLex::s_currentLexp->lineDirective(yytext);
+					  return(VP_LINE); }
 
 	/* Special directives we recognise */
 <INITIAL>"`include"	{ return(VP_INCLUDE); }

src/V3PreProc.cpp

@@ -328,6 +328,7 @@ const char* V3PreProcImp::tokenName(int tok) {
     case VP_DEFINE	: return("DEFINE");
     case VP_ELSE	: return("ELSE");	
     case VP_ELSIF	: return("ELSIF");	
+    case VP_LINE	: return("LINE");	
     case VP_SYMBOL	: return("SYMBOL");
     case VP_STRING	: return("STRING");
     case VP_DEFVALUE	: return("DEFVALUE");
@@ -583,6 +584,10 @@ int V3PreProcImp::getToken() {
 	    for (int len=0; len<yyleng; len++) { if (yytext[len]=='\n') m_lineAdd++; }
 	    goto next_tok;
 	}
+	if (tok==VP_LINE) {
+	    addLineComment(0);
+	    goto next_tok;
+	}
 	// Deal with some special parser states
 	switch (m_state) {
 	case ps_TOP: {

src/V3Scope.cpp

@@ -198,19 +198,17 @@ private:
 	nodep->taskp(NULL);
 	nodep->iterateChildren(*this);
     }
-    virtual void visit(AstDisplay* nodep, AstNUser*) {
+    virtual void visit(AstScopeName* nodep, AstNUser*) {
 	// If there's a %m in the display text, we add a special node that will contain the name()
-	if (nodep->name().find("%m") != string::npos) {
-	    string prefix = (string)(".")+m_scopep->prettyName();
-	    // TOP and above will be the user's name().
-	    // Note 'TOP.'is stripped by prettyName, but not 'TOP'.
-	    if (prefix != ".TOP") {
-		// To keep correct visual order, must add before other Text's
-		AstNode* afterp = nodep->scopeAttrp();
-		if (afterp) afterp->unlinkFrBackWithNext();
-		nodep->scopeAttrp(new AstText(nodep->fileline(), prefix));
-		if (afterp) nodep->scopeAttrp(afterp);
-	    }
+	string prefix = (string)(".")+m_scopep->prettyName();
+	// TOP and above will be the user's name().
+	// Note 'TOP.'is stripped by prettyName, but not 'TOP'.
+	if (prefix != ".TOP") {
+	    // To keep correct visual order, must add before other Text's
+	    AstNode* afterp = nodep->scopeAttrp();
+	    if (afterp) afterp->unlinkFrBackWithNext();
+	    nodep->scopeAttrp(new AstText(nodep->fileline(), prefix));
+	    if (afterp) nodep->scopeAttrp(afterp);
 	}
 	nodep->iterateChildren(*this);
     }

src/V3Width.cpp

@@ -385,6 +385,9 @@ private:
     virtual void visit(AstText* nodep, AstNUser* vup) {
 	// Only used in CStmts which don't care....
     }
+    virtual void visit(AstScopeName* nodep, AstNUser* vup) {
+	// Only used in Displays which don't care....
+    }
     virtual void visit(AstVar* nodep, AstNUser* vup) {
 	//if (debug()) nodep->dumpTree(cout,"  InitPre: ");
 	// Must have deterministic constant width

src/Verilator.cpp

@@ -538,7 +538,7 @@ int main(int argc, char** argv, char** env) {
 
     // Final steps
     v3Global.rootp()->dumpTreeFile(v3Global.debugFilename("final.tree",99));
-    V3Error::abortIfErrors();
+    V3Error::abortIfWarnings();
 
     if (!v3Global.opt.lintOnly() && v3Global.opt.makeDepend()) {
 	V3File::writeDepend(v3Global.opt.makeDir()+"/"+v3Global.opt.prefix()+"__ver.d");

src/config_build.h.in

@@ -24,7 +24,7 @@
 //**********************************************************************
 //**** Version and host name
 
-#define DTVERSION	"Verilator 3.651 4/20/2007"
+#define DTVERSION	"Verilator 3.652 6/21/2007"
 
 //**********************************************************************
 //**** Functions

src/verilog.l

@@ -718,7 +718,7 @@ escid	\\[^ \t\f\r\n]+
 
 <V95,V01,V05,S05,PSL>{
   "`"[a-zA-Z_0-9]+	{ yyerrorf("Define or directive not defined: %s",yytext); }
-  "//"[^\n]+		{ }  /* throw away single line comments */
+  "//"[^\n]*		{ }  /* throw away single line comments */
   .			{yylval.fileline = CRELINE(); return yytext[0];}	/* return single char ops. */
 }
 

src/verilog.y

@@ -288,7 +288,7 @@ class AstSenTree;
 //	Trailing E indicates this type may have empty match
 %type<modulep>	modHdr
 %type<nodep>	modPortsE portList port
-%type<nodep>	portV2kList portV2kSig
+%type<nodep>	portV2kArgs portV2kList portV2kSecond portV2kSig
 %type<nodep>	portV2kDecl ioDecl varDecl
 %type<nodep>	modParDecl modParList modParE
 %type<nodep>	modItem modItemList modItemListE modOrGenItem
@@ -325,7 +325,7 @@ class AstSenTree;
 %type<nodep>	taskDecl
 %type<nodep>	varDeclList
 %type<funcp>	funcDecl
-%type<nodep>	funcBody funcVarList funcVar
+%type<nodep>	funcBody funcGuts funcVarList funcVar
 %type<rangep>	funcTypeE
 %type<rangep>	instRangeE
 %type<nodep>	gateDecl
@@ -386,7 +386,7 @@ modParList:	modParDecl				{ $$ = $1; }
 modPortsE:	/* empty */					{ $$ = NULL; }
 	|	'(' ')'						{ $$ = NULL; }
 	|	'(' {V3Parse::s_pinNum=1;} portList ')'		{ $$ = $3; }
-	|	'(' {V3Parse::s_pinNum=1;} portV2kList ')'	{ $$ = $3; }
+	|	'(' {V3Parse::s_pinNum=1;} portV2kArgs ')'	{ $$ = $3; }
 	;
 
 portList:	port				       	{ $$ = $1; }
@@ -396,8 +396,17 @@ portList:	port				       	{ $$ = $1; }
 port:		yaID portRangeE			       	{ $$ = new AstPort(CRELINE(),V3Parse::s_pinNum++,*$1); }
 	;
 
-portV2kList:	portV2kDecl				{ $$ = $1; }
-	|	portV2kList ',' portV2kDecl		{ $$ = $1->addNext($3); }
+portV2kArgs:	portV2kDecl				{ $$ = $1; }
+	|	portV2kDecl ',' portV2kList		{ $$ = $1->addNext($3); }
+ 	;
+
+portV2kList:	portV2kSecond				{ $$ = $1; }
+	|	portV2kList ',' portV2kSecond		{ $$ = $1->addNext($3); }
+	;
+
+// Called only after a comma in a v2k list, to allow parsing "input a,b"
+portV2kSecond:	portV2kDecl				{ $$ = $1; }
+	|	portV2kSig				{ $$ = $1; }
 	;
 
 portV2kSig:	sigAndAttr				{ $$=$1; $$->addNext(new AstPort(CRELINE(),V3Parse::s_pinNum++, V3Parse::s_varAttrp->name())); }
@@ -849,21 +858,25 @@ taskRef:	idDotted		 		{ $$ = new AstTaskRef(CRELINE(),new AstParseRef($1->fileli
 funcRef:	idDotted '(' exprList ')'		{ $$ = new AstFuncRef($2,new AstParseRef($1->fileline(), AstParseRefExp::FUNC, $1), $3); }
 	;
 
-taskDecl: 	yTASK taskAutoE yaID ';'             stmtBlock yENDTASK	{ $$ = new AstTask ($1,*$3,$5);}
-	| 	yTASK taskAutoE yaID ';' funcVarList stmtBlock yENDTASK	{ $$ = new AstTask ($1,*$3,$5); $5->addNextNull($6); }
+taskDecl: 	yTASK taskAutoE yaID funcGuts yENDTASK	{ $$ = new AstTask ($1,*$3,$4);}
 	;
 
-funcDecl: 	yFUNCTION taskAutoE         funcTypeE yaID			 ';' funcBody yENDFUNCTION { $$ = new AstFunc ($1,*$4,$6,$3); }
-	|	yFUNCTION taskAutoE ySIGNED funcTypeE yaID			 ';' funcBody yENDFUNCTION { $$ = new AstFunc ($1,*$5,$7,$4); $$->isSigned(true); }
-	| 	yFUNCTION taskAutoE         funcTypeE yaID yVL_ISOLATE_ASSIGNMENTS ';' funcBody yENDFUNCTION { $$ = new AstFunc ($1,*$4,$7,$3); $$->attrIsolateAssign(true);}
-	|	yFUNCTION taskAutoE ySIGNED funcTypeE yaID yVL_ISOLATE_ASSIGNMENTS ';' funcBody yENDFUNCTION { $$ = new AstFunc ($1,*$5,$8,$4); $$->attrIsolateAssign(true); $$->isSigned(true); }
+funcDecl: 	yFUNCTION taskAutoE         funcTypeE yaID			   funcGuts yENDFUNCTION { $$ = new AstFunc ($1,*$4,$5,$3); }
+	|	yFUNCTION taskAutoE ySIGNED funcTypeE yaID			   funcGuts yENDFUNCTION { $$ = new AstFunc ($1,*$5,$6,$4); $$->isSigned(true); }
+	| 	yFUNCTION taskAutoE         funcTypeE yaID yVL_ISOLATE_ASSIGNMENTS funcGuts yENDFUNCTION { $$ = new AstFunc ($1,*$4,$6,$3); $$->attrIsolateAssign(true);}
+	|	yFUNCTION taskAutoE ySIGNED funcTypeE yaID yVL_ISOLATE_ASSIGNMENTS funcGuts yENDFUNCTION { $$ = new AstFunc ($1,*$5,$7,$4); $$->attrIsolateAssign(true); $$->isSigned(true); }
 	;
 
 taskAutoE:	/* empty */		 		{ }
 	|	yAUTOMATIC		 		{ }
 	;
 
+funcGuts:	'(' {V3Parse::s_pinNum=1;} portV2kArgs ')' ';' funcBody	{ $$ = $3->addNextNull($6); }
+	|	';' funcBody				{ $$ = $2; }
+	;
+
 funcBody:	funcVarList stmtBlock			{ $$ = $1;$1->addNextNull($2); }
+	|	stmtBlock				{ $$ = $1; }
 	;
 
 funcTypeE:	/* empty */				{ $$ = NULL; }

test_regress/driver.pl

@@ -549,6 +549,7 @@ sub _make_main {
 	print $fh "    double sim_time = 1000;\n";
     }
     print $fh "    Verilated::debug(".($self->{verilated_debug}?1:0).");\n";
+    print $fh "    Verilated::randReset(".$self->{verilated_randReset}.");\n" if defined $self->{verilated_randReset};
     print $fh "    topp = new $VM_PREFIX (\"TOP\");\n";
     my $set;
     if ($self->sp) {

test_regress/t/t_display.pl

@@ -24,6 +24,8 @@ execute (
 [0] %x=00abc1234567812345678 %0x=abc1234567812345678 %o=012570110642547402215053170 %b=000001010101111000001001000110100010101100111100000010010001101000101011001111000
 
 [0] %s=! %s= what! %s= hmmm!1234
+[0] hello, from a very long string. Percent %s are literally substituted in.
+*-* All Finished *-*
 '),
      );
 

test_regress/t/t_display.v

@@ -33,6 +33,9 @@ module t;
       $display("[%0t] %%s=%s %%s=%s %%s=%s", $time,
 	       str2[7:0], str2, str3);
 
+      $display("[%0t] %s%s%s", $time,
+	       "hel", "lo, fr", "om a very long string. Percent %s are literally substituted in.");
+
       // Str check
 `ifndef nc	// NC-Verilog 5.3 chokes on this test
       if (str !== 32'h00_bf_11_0a) $stop;

test_regress/t/t_display_noopt.pl

@@ -0,0 +1,36 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("./driver.pl", @ARGV, $0); die; }
+# $Id$
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2003 by Wilson Snyder. This program is free software; you can
+# redistribute it and/or modify it under the terms of either the GNU
+# General Public License or the Perl Artistic License.
+
+top_filename("t/t_display.v");
+
+compile (
+	 v_flags2 => [$Last_Self->{v3}?"-O0":""],
+	 );
+
+execute (
+	 check_finished=>1,
+	 expect=>quotemeta(
+'[0] In TOP.v: Hi
+[0] In TOP.v.sub
+[0] In TOP.v.sub.subblock
+[0] In TOP.v.sub2
+[0] In TOP.v.sub2.subblock2
+[0] %X=0c %D=12 %0X=c %0O=14 %B=001100
+[0] %x=0c %d=12 %0x=c %0o=14 %b=001100
+[0] %x=00abbbbcccc %0x=abbbbcccc %o=00527356746314 %b=00000101010111011101110111100110011001100
+[0] %x=00abc1234567812345678 %0x=abc1234567812345678 %o=012570110642547402215053170 %b=000001010101111000001001000110100010101100111100000010010001101000101011001111000
+
+[0] %s=! %s= what! %s= hmmm!1234
+[0] hello, from a very long string. Percent %s are literally substituted in.
+*-* All Finished *-*
+'),
+     );
+
+ok(1);
+1;

test_regress/t/t_display_signed.pl

@@ -13,12 +13,12 @@ compile (
 execute (
 	 check_finished=>1,
 	 expect=> quotemeta(
-'[0] %x=0bbccc %x=0bbccc %o=2736314 %b=010111011110011001100 %0d=769228 %d=  769228
-[0] %x=1bbccc %x=1bbccc %o=6736314 %b=110111011110011001100 %0d=-279348 %d= -279348
-[0] %x=000bbbbcccc %x=000bbbbcccc %o=00027356746314 %b=00000000010111011101110111100110011001100 %0d=3149647052 %d=    3149647052
-[0] %x=100bbbbcccc %x=100bbbbcccc %o=20027356746314 %b=10000000010111011101110111100110011001100 %0d=-1096361980724 %d=-1096361980724
-[0] %x=000bc1234567812345678 %x=000bc1234567812345678 %o=000570110642547402215053170 %b=000000000101111000001001000110100010101100111100000010010001101000101011001111000
-[0] %x=000bc1234577812345678 %x=000bc1234577812345678 %o=000570110642567402215053170 %b=000000000101111000001001000110100010101110111100000010010001101000101011001111000
+'[0] lp %x=0bbccc %x=0bbccc %o=2736314 %b=010111011110011001100 %0d=769228 %d=  769228
+[0] ln %x=1bbccc %x=1bbccc %o=6736314 %b=110111011110011001100 %0d=-279348 %d= -279348
+[0] qp %x=001bbbbcccc %x=001bbbbcccc %o=00067356746314 %b=00000000110111011101110111100110011001100 %0d=7444614348 %d=    7444614348
+[0] qn %x=101bbbbcccc %x=101bbbbcccc %o=20067356746314 %b=10000000110111011101110111100110011001100 %0d=-1092067013428 %d=-1092067013428
+[0] wp %x=000bc1234567812345678 %x=000bc1234567812345678 %o=000570110642547402215053170 %b=000000000101111000001001000110100010101100111100000010010001101000101011001111000
+[0] wn %x=000bc1234577812345678 %x=000bc1234577812345678 %o=000570110642567402215053170 %b=000000000101111000001001000110100010101110111100000010010001101000101011001111000
 '),
      );
 

test_regress/t/t_display_signed.v

@@ -7,24 +7,24 @@
 module t;
    reg signed [20:0] longp; initial longp = 21'shbbccc;
    reg signed [20:0] longn; initial longn = 21'shbbccc; initial longn[20]=1'b1;
-   reg signed [40:0] quadp; initial quadp = 41'shbbbb_cccc;
-   reg signed [40:0] quadn; initial quadn = 41'shbbbb_cccc; initial quadn[40]=1'b1;
+   reg signed [40:0] quadp; initial quadp = 41'sh1_bbbb_cccc;
+   reg signed [40:0] quadn; initial quadn = 41'sh1_bbbb_cccc; initial quadn[40]=1'b1;
    reg signed [80:0] widep; initial widep = 81'shbc_1234_5678_1234_5678;
    reg signed [80:0] widen; initial widen = 81'shbc_1234_5678_1234_5678; initial widen[40]=1'b1;
 
    initial begin
       // Display formatting
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
+      $display("[%0t] lp %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
 	       longp, longp, longp, longp, longp, longp);
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
+      $display("[%0t] ln %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
 	       longn, longn, longn, longn, longn, longn);
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
+      $display("[%0t] qp %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
 	       quadp, quadp, quadp, quadp, quadp, quadp);
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
+      $display("[%0t] qn %%x=%x %%x=%x %%o=%o %%b=%b %%0d=%0d %%d=%d", $time,
 	       quadn, quadn, quadn, quadn, quadn, quadn);
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b", $time,
+      $display("[%0t] wp %%x=%x %%x=%x %%o=%o %%b=%b", $time,
 	       widep, widep, widep, widep);
-      $display("[%0t] %%x=%x %%x=%x %%o=%o %%b=%b", $time,
+      $display("[%0t] wn %%x=%x %%x=%x %%o=%o %%b=%b", $time,
 	       widen, widen, widen, widen);
       $display;
       $write("*-* All Finished *-*\n");

test_regress/t/t_display_signed_noopt.pl

@@ -0,0 +1,29 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("./driver.pl", @ARGV, $0); die; }
+# $Id$
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2003 by Wilson Snyder. This program is free software; you can
+# redistribute it and/or modify it under the terms of either the GNU
+# General Public License or the Perl Artistic License.
+
+top_filename("t/t_display_signed.v");
+
+compile (
+	 v_flags2 => [$Last_Self->{v3}?"-O0":""],
+	 );
+
+execute (
+	 check_finished=>1,
+	 expect=> quotemeta(
+'[0] lp %x=0bbccc %x=0bbccc %o=2736314 %b=010111011110011001100 %0d=769228 %d=  769228
+[0] ln %x=1bbccc %x=1bbccc %o=6736314 %b=110111011110011001100 %0d=-279348 %d= -279348
+[0] qp %x=001bbbbcccc %x=001bbbbcccc %o=00067356746314 %b=00000000110111011101110111100110011001100 %0d=7444614348 %d=    7444614348
+[0] qn %x=101bbbbcccc %x=101bbbbcccc %o=20067356746314 %b=10000000110111011101110111100110011001100 %0d=-1092067013428 %d=-1092067013428
+[0] wp %x=000bc1234567812345678 %x=000bc1234567812345678 %o=000570110642547402215053170 %b=000000000101111000001001000110100010101100111100000010010001101000101011001111000
+[0] wn %x=000bc1234577812345678 %x=000bc1234577812345678 %o=000570110642567402215053170 %b=000000000101111000001001000110100010101110111100000010010001101000101011001111000
+'),
+     );
+
+ok(1);
+1;

test_regress/t/t_func.v

@@ -67,10 +67,11 @@ module t;
       end
    endtask
 
-   task incr;
-      output [31:0] z;
-      input [31:0] a;
-      input [31:0] inc;
+   task incr (
+	      // Check a V2K style input/output list
+    output [31:0] z,
+    input [31:0]  a, inc
+	      );
       z = a + inc;
    endtask
 

test_regress/t/t_func_check.pl

@@ -0,0 +1,20 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("./driver.pl", @ARGV, $0); die; }
+# $Id$
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2003 by Wilson Snyder. This program is free software; you can
+# redistribute it and/or modify it under the terms of either the GNU
+# General Public License or the Perl Artistic License.
+
+$Last_Self->{verilated_randReset} = 1;
+
+compile (
+	 );
+
+execute (
+	 check_finished=>1,
+     );
+
+ok(1);
+1;

test_regress/t/t_func_check.v

@@ -0,0 +1,75 @@
+// $Id$
+// DESCRIPTION: Verilator: Verilog Test module
+
+// verilator lint_off WIDTH
+// verilator lint_off VARHIDDEN
+
+module t (
+   clk
+   );
+   input clk;
+   integer 	cyc=0;
+   reg [63:0] 	crc; initial crc = 64'h1;
+
+   chk chk (.clk	(clk),
+	    .rst_l	(1'b1),
+	    .expr	(|crc),
+	    );
+
+   always @ (posedge clk) begin
+      cyc <= cyc + 1;
+      crc <= {crc[62:0], crc[63]^crc[2]^crc[0]};
+      if (cyc==0) begin
+	 crc <= 64'h5aef0c8d_d70a4497;
+      end
+      else if (cyc<90) begin
+      end
+      else if (cyc==99) begin
+	 $write("*-* All Finished *-*\n");
+	 $finish;
+      end
+   end
+endmodule
+
+module chk (input clk, input rst_l, input expr);
+
+   integer errors; initial errors = 0;
+
+   task printerr;
+      input [8*64:1] msg;
+      begin
+	 errors = errors + 1;
+	 $write("%%Error: %0s\n", msg);
+	 $stop;
+      end
+   endtask 
+
+   always @(posedge clk) begin
+      if (rst_l) begin
+	 if (expr == 1'b0) begin
+            printerr("expr not asserted");
+	 end
+      end
+   end
+
+   wire noxs = ((expr ^ expr) == 1'b0);
+
+   reg 	  hasx;
+   always @ (noxs) begin
+      if (noxs) begin
+         hasx = 1'b0;
+      end
+      else begin
+         hasx = 1'b1;
+      end
+   end
+
+   always @(posedge clk) begin
+      if (rst_l) begin
+         if (hasx) begin
+            printerr("expr has unknowns");
+         end
+      end
+   end
+
+endmodule 

test_regress/t/t_func_outp.v

@@ -56,7 +56,7 @@ endmodule
 
 module ftest(
              input [ 7:0 ]  a,
-             input [ 7:0 ]  b,
+                            b,   // Test legal syntax
              input clk,
              output  [ 7:0 ]  z
              );
@@ -85,7 +85,7 @@ endmodule // ftest
 
 module mytop ( 
            input [ 7:0 ]  a,
-           input [ 7:0 ]  b,
+                          b,
            input clk,
            output  [ 7:0 ]  z
            );

test_regress/t/t_preproc.out

@@ -22,6 +22,8 @@ At file t/t_preproc_inc2.v  line 4
 
 `line 1 "t/t_preproc_inc3.v" 1
 
+`line 2 "inc3_a_filename_from_line_directive" 0
+