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Remove the 128-bit special handling from SCALAR_TO_VECTOR. This isn't

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the way to go. Doing this here will prevent several node matches later,
and would have to force looking all the way through several
VINSERTF128/VEXTRACTF128 chains to optimize simple things.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135730 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bruno Cardoso Lopes 2011-07-22 00:15:10 +00:00
parent 6683efb4cd
commit c41e593509
1 changed files with 0 additions and 18 deletions
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18
lib/Target/X86/X86ISelLowering.cpp
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@ -983,7 +983,6 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
setOperationAction(ISD::VECTOR_SHUFFLE, SVT, Custom);
setOperationAction(ISD::INSERT_VECTOR_ELT, SVT, Custom);
setOperationAction(ISD::EXTRACT_VECTOR_ELT, SVT, Custom);
setOperationAction(ISD::SCALAR_TO_VECTOR, SVT, Custom);
setOperationAction(ISD::INSERT_SUBVECTOR, SVT, Custom);
}
@ -6339,26 +6338,9 @@ X86TargetLowering::LowerINSERT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const {
SDValue
X86TargetLowering::LowerSCALAR_TO_VECTOR(SDValue Op, SelectionDAG &DAG) const {
LLVMContext *Context = DAG.getContext();
DebugLoc dl = Op.getDebugLoc();
EVT OpVT = Op.getValueType();
// If this is a 256-bit vector result, first insert into a 128-bit
// vector and then insert into the 256-bit vector.
if (OpVT.getSizeInBits() > 128) {
// Insert into a 128-bit vector.
EVT VT128 = EVT::getVectorVT(*Context,
OpVT.getVectorElementType(),
OpVT.getVectorNumElements() / 2);
Op = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT128, Op.getOperand(0));
// Insert the 128-bit vector.
return Insert128BitVector(DAG.getNode(ISD::UNDEF, dl, OpVT), Op,
DAG.getConstant(0, MVT::i32),
DAG, dl);
}
if (Op.getValueType() == MVT::v1i64 &&
Op.getOperand(0).getValueType() == MVT::i64)
return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, MVT::v1i64, Op.getOperand(0));