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Fix a crasher: we need to check that the function is non-null before using it!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63902 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -120,7 +120,7 @@ AliasAnalysis::getModRefBehavior(CallSite CS,
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AliasAnalysis::ModRefBehavior
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AliasAnalysis::getModRefBehavior(Function *F,
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std::vector<PointerAccessInfo> *Info) {
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if (F->doesNotAccessMemory())
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if (F && F->doesNotAccessMemory())
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// Can't do better than this.
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return DoesNotAccessMemory;
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return UnknownModRefBehavior;
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