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Support writing to inout in fork after timing (#7345)

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This commit is contained in:
Kamil Danecki
2026-05-08 16:35:34 -04:00
committed by GitHub
parent f85641e40d
commit 5820d2936c
16 changed files with 395 additions and 63 deletions
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src/V3Fork.cpp
+5 -14
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@@ -443,20 +443,11 @@ class DynScopeVisitor final : public VNVisitor {
if (!isEvent && m_afterTimingControl && nodep->varp()->isWritable()
&& nodep->access().isWriteOrRW()) {
// The output variable may not exist after a delay, so we can't just write to it
if (m_inFunc) {
nodep->v3error(
"Writing to an "
<< nodep->varp()->verilogKwd()
<< " variable of a function after a timing control is not allowed");
} else {
nodep->v3warn(E_UNSUPPORTED, "Unsupported: Writing to a captured "
<< nodep->varp()->verilogKwd()
<< " variable in a "
<< (VN_IS(nodep->backp(), AssignDly)
? "non-blocking assignment"
: "fork")
<< " after a timing control");
}
nodep->v3error(
"Writing to an "
<< nodep->varp()->verilogKwd() << " automatic variable of a "
<< (m_inFunc ? "function" : "task")
<< " after a timing control is not allowed (IEEE 1800-2023 13.2.2)");
}
if (!framep->instance().initialized()) framep->createInstancePrototype();
framep->captureVarInsert(nodep->varp());