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Optimize Dfg only once, after V3Scope (#7362)

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This commit is contained in:
Geza Lore
2026-04-09 08:31:12 -04:00
committed by GitHub
parent e63c4f563e
commit 9f9532ff78
54 changed files with 752 additions and 1399 deletions
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src/V3Options.cpp
+12 -11
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@@ -1455,11 +1455,7 @@ void V3Options::parseOptsList(FileLine* fl, const string& optdir, int argc,
DECL_OPTION("-fdead-assigns", FOnOff, &m_fDeadAssigns);
DECL_OPTION("-fdead-cells", FOnOff, &m_fDeadCells);
DECL_OPTION("-fdedup", FOnOff, &m_fDedupe);
DECL_OPTION("-fdfg", CbFOnOff, [this](bool flag) {
m_fDfgPreInline = flag;
m_fDfgPostInline = flag;
m_fDfgScoped = flag;
});
DECL_OPTION("-fdfg", CbFOnOff, [this](bool flag) { m_fDfg = flag; });
DECL_OPTION("-fdfg-break-cycles", FOnOff, &m_fDfgBreakCycles);
DECL_OPTION("-fdfg-peephole", FOnOff, &m_fDfgPeephole);
DECL_OPTION("-fdfg-peephole-", CbPartialMatch, [this](const char* optp) { //
@@ -1468,11 +1464,18 @@ void V3Options::parseOptsList(FileLine* fl, const string& optdir, int argc,
DECL_OPTION("-fno-dfg-peephole-", CbPartialMatch, [this](const char* optp) { //
m_fDfgPeepholeDisabled.emplace(optp);
});
DECL_OPTION("-fdfg-pre-inline", FOnOff, &m_fDfgPreInline);
DECL_OPTION("-fdfg-post-inline", FOnOff, &m_fDfgPostInline);
DECL_OPTION("-fdfg-pre-inline", CbFOnOff, [fl](bool) {
fl->v3warn(DEPRECATED, "Option '-fno-dfg-pre-inline' is deprecated and has no effect");
});
DECL_OPTION("-fdfg-post-inline", CbFOnOff, [fl](bool) {
fl->v3warn(DEPRECATED, "Option '-fno-dfg-post-inline' is deprecated and has no effect");
});
DECL_OPTION("-fdfg-push-down-sels", FOnOff, &m_fDfgPushDownSels);
DECL_OPTION("-fdfg-scoped", FOnOff, &m_fDfgScoped);
DECL_OPTION("-fdfg-synthesize-all", FOnOff, &m_fDfgSynthesizeAll);
DECL_OPTION("-fdfg-scoped", CbFOnOff, [this, fl](bool flag) {
fl->v3warn(DEPRECATED, "Option '-fno-dfg-scoped' is deprecated, use '-fno-dfg' instead.");
m_fDfg = flag;
});
DECL_OPTION("-fexpand", FOnOff, &m_fExpand);
DECL_OPTION("-ffunc-opt", CbFOnOff, [this](bool flag) { //
m_fFuncSplitCat = flag;
@@ -2351,9 +2354,7 @@ void V3Options::optimize(int level) {
m_fConst = flag;
m_fConstBitOpTree = flag;
m_fDedupe = flag;
m_fDfgPreInline = flag;
m_fDfgPostInline = flag;
m_fDfgScoped = flag;
m_fDfg = flag;
m_fDeadAssigns = flag;
m_fDeadCells = flag;
m_fExpand = flag;