From 4637c3c6988d47600d556dbb51d87b48cbd7d5cf Mon Sep 17 00:00:00 2001 From: Mon P Wang Date: Wed, 10 Dec 2008 03:59:02 +0000 Subject: Fixed a bug when trying to optimize a extract vector element of a bit convert that changes the number of elements of a shuffle. llvm-svn: 60829 --- llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp') diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index aae4c59a8c7..9cc8061f183 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/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(); -- cgit v1.2.3