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Support self-recursive modules, bug659.

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This commit is contained in:
Wilson Snyder
2017-11-18 17:42:35 -05:00
parent 21369bec95
commit a579e9273b
19 changed files with 229 additions and 31 deletions
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src/V3Dead.cpp
+8 -4
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@@ -137,8 +137,10 @@ private:
// VISITORS
virtual void visit(AstNodeModule* nodep) {
m_modp = nodep;
nodep->iterateChildren(*this);
checkAll(nodep);
if (!nodep->dead()) {
nodep->iterateChildren(*this);
checkAll(nodep);
}
m_modp = NULL;
}
virtual void visit(AstCFunc* nodep) {
@@ -280,12 +282,14 @@ private:
AstNodeModule* nextmodp;
for (AstNodeModule* modp = v3Global.rootp()->modulesp(); modp; modp=nextmodp) {
nextmodp = modp->nextp()->castNodeModule();
if (modp->level()>2 && modp->user1()==0 && !modp->internal()) {
if (modp->dead() || (modp->level()>2 && modp->user1()==0 && !modp->internal())) {
// > 2 because L1 is the wrapper, L2 is the top user module
UINFO(4," Dead module "<<modp<<endl);
// And its children may now be killable too; correct counts
// Recurse, as cells may not be directly under the module but in a generate
DeadModVisitor visitor(modp);
if (!modp->dead()) { // If was dead didn't increment user1's
DeadModVisitor visitor(modp);
}
modp->unlinkFrBack()->deleteTree(); VL_DANGLING(modp);
retry = true;
}