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Don't call Constant::getNullValue when the argument could be VoidTy

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17457 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-11-03 18:51:26 +00:00
parent 5200ad1b34
commit 82962de3b9
1 changed files with 3 additions and 2 deletions
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5
lib/Analysis/DataStructure/Local.cpp
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@ -209,7 +209,7 @@ DSGraph::DSGraph(const TargetData &td, Function &F, DSGraph *GG)
///
DSNodeHandle GraphBuilder::getValueDest(Value &Val) {
Value *V = &Val;
if (V == Constant::getNullValue(V->getType()))
if (isa<Constant>(V) && cast<Constant>(V)->isNullValue())
return 0; // Null doesn't point to anything, don't add to ScalarMap!
DSNodeHandle &NH = ScalarMap[V];
@ -528,7 +528,8 @@ void GraphBuilder::visitCallSite(CallSite CS) {
return;
} else if (F->getName() == "realloc") {
DSNodeHandle RetNH = getValueDest(*CS.getInstruction());
RetNH.mergeWith(getValueDest(**CS.arg_begin()));
if (CS.arg_begin() != CS.arg_end())
RetNH.mergeWith(getValueDest(**CS.arg_begin()));
if (DSNode *N = RetNH.getNode())
N->setHeapNodeMarker()->setModifiedMarker()->setReadMarker();
return;