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Don't try to use the insertps instruction for vector

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element inserts with non-constant indices. This fixes
CodeGen/X86/vector-variable-idx.ll on machines that
have SSE4.1.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54801 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-08-14 22:43:26 +00:00
parent e285a74f7c
commit c0573b13a1
1 changed files with 1 additions and 1 deletions
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2
lib/Target/X86/X86ISelLowering.cpp
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@ -4153,7 +4153,7 @@ X86TargetLowering::LowerINSERT_VECTOR_ELT_SSE4(SDValue Op, SelectionDAG &DAG){
if (N2.getValueType() != MVT::i32)
N2 = DAG.getIntPtrConstant(cast<ConstantSDNode>(N2)->getValue());
return DAG.getNode(Opc, VT, N0, N1, N2);
} else if (EVT == MVT::f32) {
} else if (EVT == MVT::f32 && isa<ConstantSDNode>(N2)) {
// Bits [7:6] of the constant are the source select. This will always be
// zero here. The DAG Combiner may combine an extract_elt index into these
// bits. For example (insert (extract, 3), 2) could be matched by putting