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InequalityGraph::node() can create new nodes, invalidating iterators across

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the set of nodes. Fix makeEqual to handle this by creating the new node first
then iterating across them second.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51573 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2008-05-27 00:59:05 +00:00
parent 70ef629d46
commit 6918a9141e
1 changed files with 1 additions and 0 deletions
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lib/Transforms/Scalar/PredicateSimplifier.cpp
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@ -1594,6 +1594,7 @@ namespace {
if (mergeIGNode) { if (mergeIGNode) {
// Create N1. // Create N1.
if (!n1) n1 = VN.getOrInsertVN(V1, Top); if (!n1) n1 = VN.getOrInsertVN(V1, Top);
IG.node(n1); // Ensure that IG.Nodes won't get resized
// Migrate relationships from removed nodes to N1. // Migrate relationships from removed nodes to N1.
for (SetVector<unsigned>::iterator I = Remove.begin(), E = Remove.end(); for (SetVector<unsigned>::iterator I = Remove.begin(), E = Remove.end();