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Fix tristate bug512, broken with tristate commit.

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This commit is contained in:
Wilson Snyder
2012-05-09 20:34:15 -04:00
parent 435a27b66a
commit 37a3a7cdce
3 changed files with 76 additions and 5 deletions
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src/V3Tristate.cpp
+8 -5
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@@ -456,13 +456,16 @@ class TristateVisitor : public TristateBaseVisitor {
// Check for unsupported tristate constructs. This is not a 100% check.
// The best way would be to visit the tree again and find any user1p()
// pointers that did not get picked up and expanded.
if (m_alhs && nodep->user1p())
if (m_alhs && nodep->user1p()) {
nodep->v3error("Unsupported LHS tristate construct: "<<nodep->prettyTypeName());
if ((nodep->op1p() && nodep->op1p()->user1p())
|| (nodep->op2p() && nodep->op2p()->user1p())
|| (nodep->op3p() && nodep->op3p()->user1p())
|| (nodep->op4p() && nodep->op4p()->user1p()))
}
// Ignore Var's because they end up adjacent to statements
if ((nodep->op1p() && nodep->op1p()->user1p() && !nodep->op1p()->castVar())
|| (nodep->op2p() && nodep->op2p()->user1p() && !nodep->op1p()->castVar())
|| (nodep->op3p() && nodep->op3p()->user1p() && !nodep->op1p()->castVar())
|| (nodep->op4p() && nodep->op4p()->user1p() && !nodep->op1p()->castVar())) {
nodep->v3error("Unsupported tristate construct: "<<nodep->prettyTypeName());
}
}
void insertTristates(AstNodeModule* nodep) {