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do not repeatedly dereference use_iterator

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107963 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif 2010-07-09 13:17:13 +00:00
parent b654435712
commit 517e124d53
1 changed files with 5 additions and 3 deletions
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8
lib/Analysis/IPA/CallGraph.cpp
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@ -126,13 +126,15 @@ private:
} }
// Loop over all of the users of the function, looking for non-call uses. // Loop over all of the users of the function, looking for non-call uses.
for (Value::use_iterator I = F->use_begin(), E = F->use_end(); I != E; ++I) for (Value::use_iterator I = F->use_begin(), E = F->use_end(); I != E; ++I){
if ((!isa<CallInst>(I) && !isa<InvokeInst>(I)) User *U = *I;
|| !CallSite(cast<Instruction>(I)).isCallee(I)) { if ((!isa<CallInst>(U) && !isa<InvokeInst>(U))
|| !CallSite(cast<Instruction>(U)).isCallee(I)) {
// Not a call, or being used as a parameter rather than as the callee. // Not a call, or being used as a parameter rather than as the callee.
ExternalCallingNode->addCalledFunction(CallSite(), Node); ExternalCallingNode->addCalledFunction(CallSite(), Node);
break; break;
} }
}
// If this function is not defined in this translation unit, it could call // If this function is not defined in this translation unit, it could call
// anything. // anything.