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2022-10-01 14:53:40 +00:00
parent 159cf0429c
commit f1ba6cb517
3 changed files with 80 additions and 44 deletions
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src/V3Dead.cpp
+12 -9
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@@ -425,7 +425,7 @@ private:
void preserveTopIfaces(AstNetlist* rootp) {
for (AstNodeModule* modp = rootp->modulesp(); modp && modp->level() <= 2;
modp = VN_AS(modp->nextp(), NodeModule)) {
modp = VN_AS(modp->nextp(), NodeModule)) {
for (AstNode* subnodep = modp->stmtsp(); subnodep; subnodep = subnodep->nextp()) {
if (AstVar* const varp = VN_CAST(subnodep, Var)) {
if (varp->isIfaceRef()) {
@@ -433,23 +433,24 @@ private:
const AstIfaceRefDType* ifacerefp = nullptr;
if (VN_IS(subtypep, IfaceRefDType)) {
ifacerefp = VN_AS(varp->subDTypep(), IfaceRefDType);
}
else if (VN_IS(subtypep, BracketArrayDType)) {
const AstBracketArrayDType* const arrp = VN_AS(subtypep, BracketArrayDType);
} else if (VN_IS(subtypep, BracketArrayDType)) {
const AstBracketArrayDType* const arrp
= VN_AS(subtypep, BracketArrayDType);
const AstNodeDType* const arrsubtypep = arrp->subDTypep();
if (VN_IS(arrsubtypep, IfaceRefDType)) {
ifacerefp = VN_AS(arrsubtypep, IfaceRefDType);
}
}
else if (VN_IS(subtypep, UnpackArrayDType)) {
const AstUnpackArrayDType* const arrp = VN_AS(subtypep, UnpackArrayDType);
} else if (VN_IS(subtypep, UnpackArrayDType)) {
const AstUnpackArrayDType* const arrp
= VN_AS(subtypep, UnpackArrayDType);
const AstNodeDType* const arrsubtypep = arrp->subDTypep();
if (VN_IS(arrsubtypep, IfaceRefDType)) {
ifacerefp = VN_AS(arrsubtypep, IfaceRefDType);
}
}
if (ifacerefp && !ifacerefp->cellp() && (ifacerefp->ifacep()->user1() == 0)) {
if (ifacerefp && !ifacerefp->cellp()
&& (ifacerefp->ifacep()->user1() == 0)) {
ifacerefp->ifacep()->user1(1);
}
}
@@ -491,7 +492,9 @@ public:
void V3Dead::deadifyModules(AstNetlist* nodep) {
UINFO(2, __FUNCTION__ << ": " << endl);
{ DeadVisitor{nodep, false, false, false, false, !v3Global.opt.topIfacesSupported()}; } // Destruct before checking
{
DeadVisitor{nodep, false, false, false, false, !v3Global.opt.topIfacesSupported()};
} // Destruct before checking
V3Global::dumpCheckGlobalTree("deadModules", 0, dumpTree() >= 6);
}