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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 | bf0baa9de7f84cbd9fdd810aa5ae3566bad52596 (patch) | |
| tree | 2864811df9e3c6fa94c198313769ecaae3011c56 /llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | |
| parent | 79e1cdb00b85e9459b12df2f5fa692b490da5f36 (diff) | |
| download | bcm5719-llvm-bf0baa9de7f84cbd9fdd810aa5ae3566bad52596.tar.gz bcm5719-llvm-bf0baa9de7f84cbd9fdd810aa5ae3566bad52596.zip | |
Fix a bug in DAGCombiner::MatchBSwapHWord. Make sure the node has operands before referencing them. rdar://12868039
llvm-svn: 170078
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 893cf2036a4..7c54d17275a 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/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)) |
