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| author | Evan Cheng <evan.cheng@apple.com> | 2012-12-13 01:34:32 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2012-12-13 01:34:32 +0000 |
| commit | 9a65a01eeb97cdc10ca6b97ade3f9f8aba11fa9f (patch) | |
| tree | d376ded4c446a84b0834cee60526d031460ffb5e /lib | |
| parent | b573539c6b47d020ade2e41c0ff3afcd00f294f4 (diff) | |
| download | external_llvm-9a65a01eeb97cdc10ca6b97ade3f9f8aba11fa9f.zip external_llvm-9a65a01eeb97cdc10ca6b97ade3f9f8aba11fa9f.tar.gz external_llvm-9a65a01eeb97cdc10ca6b97ade3f9f8aba11fa9f.tar.bz2 | |
Fix a bug in DAGCombiner::MatchBSwapHWord. Make sure the node has operands before referencing them. rdar://12868039
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170078 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 893cf20..7c54d17 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -2984,7 +2984,8 @@ SDValue DAGCombiner::MatchBSwapHWord(SDNode *N, SDValue N0, SDValue N1) { SDValue N00 = N0.getOperand(0); SDValue N01 = N0.getOperand(1); - if (N1.getOpcode() == ISD::OR) { + if (N1.getOpcode() == ISD::OR && + N00.getNumOperands() == 2 && N01.getNumOperands() == 2) { // (or (or (and), (and)), (or (and), (and))) SDValue N000 = N00.getOperand(0); if (!isBSwapHWordElement(N000, Parts)) |