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Internals: Add -fno-dead-cells, -fno-dead-assigns for debug use

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This commit is contained in:
Wilson Snyder
2023-12-22 16:26:51 -05:00
parent 8e1c0b0852
commit 8769c1a92b
7 changed files with 98 additions and 2 deletions
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src/V3Dead.cpp
+2 -2
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@@ -291,7 +291,7 @@ class DeadVisitor final : public VNVisitor {
checkAll(nodep);
// Has to be direct assignment without any EXTRACTing.
AstVarRef* const varrefp = VN_CAST(nodep->lhsp(), VarRef);
if (varrefp && !m_sideEffect
if (varrefp && !m_sideEffect && v3Global.opt.fDeadAssigns()
&& varrefp->varScopep()) { // For simplicity, we only remove post-scoping
m_assignMap.emplace(varrefp->varScopep(), nodep);
checkAll(varrefp); // Must track reference to dtype()
@@ -387,7 +387,7 @@ class DeadVisitor final : public VNVisitor {
void deadCheckCells() {
for (AstCell* cellp : m_cellsp) {
if (cellp->user1() == 0 && !cellp->modp()->stmtsp()) {
if (cellp->user1() == 0 && !cellp->modp()->stmtsp() && v3Global.opt.fDeadCells()) {
cellp->modp()->user1Inc(-1);
deleting(cellp);
}