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Malloc/Free have mod/ref effects. Do not allow CSE of function calls that

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call malloc/free.  This fixes PR555.

llvm-svn: 21443
This commit is contained in:
Chris Lattner 2005-04-22 05:36:59 +00:00
parent 0d14436bc5
commit c638ca05a0
1 changed files with 2 additions and 0 deletions
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2
lib/Analysis/IPA/GlobalsModRef.cpp
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@ -310,6 +310,8 @@ void GlobalsModRef::AnalyzeSCC(std::vector<CallGraphNode *> &SCC) {
FunctionEffect |= Ref;
else if (isa<StoreInst>(*II))
FunctionEffect |= Mod;
else if (isa<MallocInst>(*II) || isa<FreeInst>(*II))
FunctionEffect |= ModRef;
}
if ((FunctionEffect & Mod) == 0)