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Add support for undef

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17055 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-10-16 18:19:26 +00:00
parent a79e7cca0d
commit bd1d382cc4
3 changed files with 8 additions and 3 deletions
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3
lib/Analysis/DataStructure/Local.cpp
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@@ -246,6 +246,9 @@ DSNodeHandle GraphBuilder::getValueDest(Value &Val) {
} else if (ConstantIntegral *CI = dyn_cast<ConstantIntegral>(C)) {
// Random constants are unknown mem
return NH = createNode()->setUnknownNodeMarker();
} else if (isa<UndefValue>(C)) {
ScalarMap.erase(V);
return 0;
} else {
assert(0 && "Unknown constant type!");
}