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Support inout clocking items (#5160)

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This commit is contained in:
Arkadiusz Kozdra
2024-06-07 08:30:58 -04:00
committed by GitHub
parent 3f886f7c61
commit 1dbf1be3e6
9 changed files with 116 additions and 23 deletions
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src/V3LinkDot.cpp
+18
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@@ -1211,6 +1211,23 @@ class LinkDotFindVisitor final : public VNVisitor {
foundp = m_modSymp; // Conflicts with modname?
}
AstVar* const findvarp = foundp ? VN_CAST(foundp->nodep(), Var) : nullptr;
// clocking items can have duplicate names (inout)
if (findvarp && VN_IS(findvarp->backp(), ClockingItem)
&& VN_IS(nodep->backp(), ClockingItem)) {
AstClockingItem* const itemp = VN_AS(nodep->backp(), ClockingItem);
AstClockingItem* const finditemp = VN_AS(findvarp->backp(), ClockingItem);
UINFO(4, "ClockCompl: " << itemp << " ;; " << finditemp << endl);
UINFO(4, "ClockCompV: " << nodep << " ;; " << findvarp << endl);
if (*itemp->exprp()->fileline() == *finditemp->exprp()->fileline()) {
UASSERT_OBJ(finditemp->direction() == VDirection::INPUT
&& itemp->direction() == VDirection::OUTPUT,
itemp, "Input after output?");
// pretend nothing found and rename
foundp = nullptr;
nodep->name("__Voutput_" + nodep->name());
finditemp->outputp(itemp);
}
}
bool ins = false;
if (!foundp) {
ins = true;
@@ -2181,6 +2198,7 @@ class LinkDotResolveVisitor final : public VNVisitor {
AstVar* const eventp = new AstVar{
clockingp->fileline(), VVarType::MODULETEMP, clockingp->name(), VFlagChildDType{},
new AstBasicDType{clockingp->fileline(), VBasicDTypeKwd::EVENT}};
eventp->lifetime(VLifetime::STATIC);
clockingp->eventp(eventp);
// Trigger the clocking event in Observed (IEEE 1800-2023 14.13)
clockingp->addNextHere(new AstAlwaysObserved{