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Support covergroup/function/task (ref/virtual/array) interface arguments (#8180)

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Marco Bartoli
2026-08-22 15:46:07 -04:00
committed by GitHub
parent 063b938f41
commit 0820506d74
39 changed files with 1630 additions and 136 deletions
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src/V3LinkDot.cpp
+5 -1
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@@ -2811,6 +2811,10 @@ private:
// Remember the alias - can't do it yet because we may have additional symbols to be added,
// or maybe an alias of an alias
m_statep->insertScopeAlias(LinkDotState::SAMN_IFTOP, lhsSymp, rhsSymp);
AstVarScope* const lhsVscp = VN_CAST(lhsSymp->nodep(), VarScope);
AstVarScope* const rhsVscp = VN_CAST(rhsSymp->nodep(), VarScope);
UASSERT_OBJ(lhsVscp && rhsVscp, nodep, "Interface alias missing variable scope");
setAliasVarScope(lhsVscp, rhsVscp);
// We have stored the link, we don't need these any more
VL_DO_DANGLING(nodep->unlinkFrBack()->deleteTree(), nodep);
}
@@ -5186,7 +5190,7 @@ class LinkDotResolveVisitor final : public VNVisitor {
checkNoDot(nodep);
iterateChildren(nodep);
AstVarScope* aliasp = LinkDotScopeVisitor::getAliasVarScopep(nodep);
if (aliasp && aliasp != nodep) {
if (aliasp && aliasp != nodep && !nodep->varp()->isIfaceRef()) {
// Aliased variable might still be references from outside,
// eg through the VPI, and is traced, so we need the value to propagate.
// TODO: this means external writes to the LHS (e.g.: through the VPI) don't work