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Support force/release (#2491) (#2593).

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This commit is contained in:
Wilson Snyder
2022-01-01 12:24:19 -05:00
parent 24a0d2a0c9
commit 0c3ffa1841
27 changed files with 579 additions and 87 deletions
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src/V3LinkLValue.cpp
+7
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@@ -35,6 +35,7 @@ private:
// NODE STATE
// STATE
bool m_setContinuously = false; // Set that var has some continuous assignment
VAccess m_setRefLvalue; // Set VarRefs to lvalues for pin assignments
AstNodeFTask* m_ftaskp = nullptr; // Function or task we're inside
@@ -47,6 +48,9 @@ private:
// VarRef: LValue its reference
if (m_setRefLvalue != VAccess::NOCHANGE) nodep->access(m_setRefLvalue);
if (nodep->varp()) {
if (nodep->access().isWriteOrRW() && m_setContinuously) {
nodep->varp()->isContinuously(true);
}
if (nodep->access().isWriteOrRW() && !m_ftaskp && nodep->varp()->isReadOnly()) {
nodep->v3warn(ASSIGNIN,
"Assigning to input/const variable: " << nodep->prettyNameQ());
@@ -69,10 +73,13 @@ private:
}
virtual void visit(AstNodeAssign* nodep) override {
VL_RESTORER(m_setRefLvalue);
VL_RESTORER(m_setContinuously);
{
m_setRefLvalue = VAccess::WRITE;
m_setContinuously = VN_IS(nodep, AssignW) || VN_IS(nodep, AssignAlias);
iterateAndNextNull(nodep->lhsp());
m_setRefLvalue = VAccess::NOCHANGE;
m_setContinuously = false;
iterateAndNextNull(nodep->rhsp());
}
}