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| author | Torok Edwin <edwintorok@gmail.com> | 2009-05-24 14:23:16 +0000 |
|---|---|---|
| committer | Torok Edwin <edwintorok@gmail.com> | 2009-05-24 14:23:16 +0000 |
| commit | b679de2a21f5ecbae81b444290d72af93aa5b0b3 (patch) | |
| tree | 8a582e9fdfcd6bc1efa5b91248c86aafe4c22f00 /lib/Analysis/ScalarEvolutionExpander.cpp | |
| parent | ed2f8c557a86612ee14fea25e7be2d3c1445951a (diff) | |
The rewriter may hold references to instructions that are deleted because they are trivially dead.
Fix by clearing the rewriter cache before deleting the trivially dead
instructions.
Also make InsertedExpressions use an AssertingVH to catch these
bugs easier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72364 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/ScalarEvolutionExpander.cpp')
| -rw-r--r-- | lib/Analysis/ScalarEvolutionExpander.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp index 507ced74fd..fc66ddb6f4 100644 --- a/lib/Analysis/ScalarEvolutionExpander.cpp +++ b/lib/Analysis/ScalarEvolutionExpander.cpp @@ -526,7 +526,7 @@ Value *SCEVExpander::expandCodeFor(SCEVHandle SH, const Type *Ty) { Value *SCEVExpander::expand(const SCEV *S) { // Check to see if we already expanded this. - std::map<SCEVHandle, Value*>::iterator I = InsertedExpressions.find(S); + std::map<SCEVHandle, AssertingVH<Value> >::iterator I = InsertedExpressions.find(S); if (I != InsertedExpressions.end()) return I->second; |