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[x86] Improve naming and comments for VSELECT lowering.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218586 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2014-09-29 00:51:58 +00:00
parent 8e93ce1780
commit b3cf6a65d6
1 changed files with 6 additions and 5 deletions
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11
lib/Target/X86/X86ISelLowering.cpp
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@ -11834,9 +11834,10 @@ static bool BUILD_VECTORtoBlendMask(BuildVectorSDNode *BuildVector,
return true;
}
// Try to lower a vselect node into a simple blend instruction.
static SDValue LowerVSELECTtoBlend(SDValue Op, const X86Subtarget *Subtarget,
SelectionDAG &DAG) {
/// \brief Try to lower a VSELECT instruction to an immediate-controlled blend
/// instruction.
static SDValue lowerVSELECTtoBLENDI(SDValue Op, const X86Subtarget *Subtarget,
SelectionDAG &DAG) {
SDValue Cond = Op.getOperand(0);
SDValue LHS = Op.getOperand(1);
SDValue RHS = Op.getOperand(2);
@ -11884,8 +11885,8 @@ SDValue X86TargetLowering::LowerVSELECT(SDValue Op, SelectionDAG &DAG) const {
ISD::isBuildVectorOfConstantSDNodes(Op.getOperand(1).getNode()) &&
ISD::isBuildVectorOfConstantSDNodes(Op.getOperand(2).getNode()))
return SDValue();
SDValue BlendOp = LowerVSELECTtoBlend(Op, Subtarget, DAG);
SDValue BlendOp = lowerVSELECTtoBLENDI(Op, Subtarget, DAG);
if (BlendOp.getNode())
return BlendOp;