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| author | Chris Lattner <sabre@nondot.org> | 2009-11-15 19:57:43 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-11-15 19:57:43 +0000 |
| commit | 5f037b6439856fa4a8414c00838cfbe5b794b560 (patch) | |
| tree | be973c6725e5755e7568e4b09fc24c63c6c169fa /llvm/lib/Transforms | |
| parent | fb7613a5d698822beb4e63860e87a07dd3701fc2 (diff) | |
| download | bcm5719-llvm-5f037b6439856fa4a8414c00838cfbe5b794b560.tar.gz bcm5719-llvm-5f037b6439856fa4a8414c00838cfbe5b794b560.zip | |
fix a bug handling 'not x' when x is undef.
llvm-svn: 88864
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/JumpThreading.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/JumpThreading.cpp b/llvm/lib/Transforms/Scalar/JumpThreading.cpp index d5ce86aca0c..de4c118b69d 100644 --- a/llvm/lib/Transforms/Scalar/JumpThreading.cpp +++ b/llvm/lib/Transforms/Scalar/JumpThreading.cpp @@ -350,8 +350,9 @@ ComputeValueKnownInPredecessors(Value *V, BasicBlock *BB,PredValueInfo &Result){ // Invert the known values. for (unsigned i = 0, e = Result.size(); i != e; ++i) - Result[i].first = - cast<ConstantInt>(ConstantExpr::getNot(Result[i].first)); + if (Result[i].first) + Result[i].first = + cast<ConstantInt>(ConstantExpr::getNot(Result[i].first)); return true; } } |
