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Complicate Chris's simplification, avoiding complaints

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about singular iterators when building with expensive
checks turned on.

llvm-svn: 80757
This commit is contained in:
Duncan Sands 2009-09-02 03:48:41 +00:00
parent 3b7954c9bf
commit b970a46d06
1 changed files with 5 additions and 1 deletions
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6
lib/Analysis/IPA/CallGraphSCCPass.cpp
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@ -161,7 +161,7 @@ void CGPassManager::RefreshCallGraph(std::vector<CallGraphNode*> &CurSCC,
// CGN with those actually in the function.
// Get the set of call sites currently in the function.
for (CallGraphNode::iterator I = CGN->begin(), E = CGN->end(); I != E; ){
for (CallGraphNode::iterator I = CGN->begin(), E = CGN->end(); I != E; ) {
// If this call site is null, then the function pass deleted the call
// entirely and the WeakVH nulled it out.
if (I->first == 0 ||
@ -178,7 +178,11 @@ void CGPassManager::RefreshCallGraph(std::vector<CallGraphNode*> &CurSCC,
"CallGraphSCCPass did not update the CallGraph correctly!");
// Just remove the edge from the set of callees.
bool wasLast = I + 1 == E;
CGN->removeCallEdge(I);
if (wasLast)
// I is now a singular iterator, do not compare with E.
break;
E = CGN->end();
continue;
}