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| author | Mon P Wang <wangmp@apple.com> | 2008-12-10 03:59:02 +0000 |
|---|---|---|
| committer | Mon P Wang <wangmp@apple.com> | 2008-12-10 03:59:02 +0000 |
| commit | bae527d949949da0cf45d279990eee21e7c66108 (patch) | |
| tree | eb1ebbaca087e0ba2e5bdaf214406f6ae6eb5d6c /lib | |
| parent | 5788d1a169db3346a612a13113348d2709bdd15b (diff) | |
| download | external_llvm-bae527d949949da0cf45d279990eee21e7c66108.zip external_llvm-bae527d949949da0cf45d279990eee21e7c66108.tar.gz external_llvm-bae527d949949da0cf45d279990eee21e7c66108.tar.bz2 | |
Fixed a bug when trying to optimize a extract vector element of a
bit convert that changes the number of elements of a shuffle.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60829 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 aae4c59..9cc8061 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -4874,7 +4874,8 @@ SDValue DAGCombiner::visitEXTRACT_VECTOR_ELT(SDNode *N) { MVT LVT = EVT; if (InVec.getOpcode() == ISD::BIT_CONVERT) { MVT BCVT = InVec.getOperand(0).getValueType(); - if (!BCVT.isVector() || EVT.bitsGT(BCVT.getVectorElementType())) + if (!BCVT.isVector() || EVT.bitsGT(BCVT.getVectorElementType()) || + VT.getVectorNumElements() != BCVT.getVectorNumElements()) return SDValue(); InVec = InVec.getOperand(0); EVT = BCVT.getVectorElementType(); |