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Simplify VL_CONST_W macro generation for faster compiles.

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This commit is contained in:
Wilson Snyder
2017-09-18 21:36:18 -04:00
parent ce16f7689d
commit 38ab22bf1d
7 changed files with 226 additions and 99 deletions
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src/V3EmitCInlines.cpp
+1 -39
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@@ -32,30 +32,15 @@
#include "V3EmitCBase.h"
#include "V3Stats.h"
#define EMITCINLINES_NUM_CONSTW 10 // Number of VL_CONST_W_*X's in verilated.h (IE VL_CONST_W_9X is last)
//######################################################################
class EmitCInlines : EmitCBaseVisitor {
// STATE
vector<V3Double0> m_wordWidths; // What sizes are used?
// METHODS
void emitInt();
// VISITORS
virtual void visit(AstVar* nodep) {
// All wide constants load into variables, so we can just hunt for them
nodep->iterateChildren(*this);
int words = nodep->widthWords();
if (words >= EMITCINLINES_NUM_CONSTW ) {
if (int(m_wordWidths.size()) <= words) {
m_wordWidths.resize(words+5);
}
++ m_wordWidths.at(words);
v3Global.needHInlines(true);
}
}
virtual void visit(AstBasicDType* nodep) {
if (nodep->keyword() == AstBasicDTypeKwd::STRING) {
v3Global.needHeavy(true); // #include <string> via verilated_heavy.h when we create symbol file
@@ -94,30 +79,7 @@ void EmitCInlines::emitInt() {
puts("\n//======================\n\n");
for (unsigned words=0; words<m_wordWidths.size(); words++) {
if (m_wordWidths.at(words)) {
puts("#ifndef VL_HAVE_CONST_W_"+cvtToStr(words)+"X\n");
puts("# define VL_HAVE_CONST_W_"+cvtToStr(words)+"X\n");
puts("static inline WDataOutP VL_CONST_W_"+cvtToStr(words)+"X(int obits, WDataOutP o\n");
puts("\t");
for (int i=words-1; i>=0; --i) {
puts(",IData d"+cvtToStr(i));
if (i && (i % 8 == 0)) puts("\n\t");
}
puts(") {\n");
puts(" ");
for (int i=words-1; i>=0; --i) {
puts(" o["+cvtToStr(i)+"]=d"+cvtToStr(i)+";");
if (i && (i % 8 == 0)) puts("\n ");
}
puts("\n");
puts(" for(int i="+cvtToStr(words)+";i<VL_WORDS_I(obits);i++) o[i] = (IData)0x0;\n");
puts(" return o;\n");
puts("}\n");
puts("#endif\n");
puts("\n");
}
}
// Placeholder - v3Global.needHInlines(true) currently not used
puts("//======================\n\n");
puts("#endif /*guard*/\n");