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[x86] rename variables for types for readability; NFC 

This gets harder to follow if we allow changing types/sizes
between source, dest, and intermediate value.
This commit is contained in:
Sanjay Patel 2020-04-17 08:41:18 -04:00
parent a6fc687e34
commit 818126ae97
1 changed files with 6 additions and 6 deletions
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12
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -19183,9 +19183,9 @@ static SDValue lowerFPToIntToFP(SDValue CastToFP, SelectionDAG &DAG,
// See if we have a 128-bit vector cast op for this type of cast.
unsigned NumEltsInXMM = 128 / VT.getScalarSizeInBits();
MVT Vec128VT = MVT::getVectorVT(VT, NumEltsInXMM);
MVT Int128VT = MVT::getVectorVT(IntVT, NumEltsInXMM);
if (!useVectorCast(CastToFP.getOpcode(), Int128VT, Vec128VT, Subtarget))
MVT VecFPVT = MVT::getVectorVT(VT, NumEltsInXMM);
MVT VecIntVT = MVT::getVectorVT(IntVT, NumEltsInXMM);
if (!useVectorCast(CastToFP.getOpcode(), VecIntVT, VecFPVT, Subtarget))
return SDValue();
// sint_to_fp (fp_to_sint X) --> extelt (sint_to_fp (fp_to_sint (s2v X))), 0
@ -19196,9 +19196,9 @@ static SDValue lowerFPToIntToFP(SDValue CastToFP, SelectionDAG &DAG,
// penalties) with cast ops.
SDLoc DL(CastToFP);
SDValue ZeroIdx = DAG.getIntPtrConstant(0, DL);
SDValue VecX = DAG.getNode(ISD::SCALAR_TO_VECTOR, DL, Vec128VT, X);
SDValue VCastToInt = DAG.getNode(ISD::FP_TO_SINT, DL, Int128VT, VecX);
SDValue VCastToFP = DAG.getNode(ISD::SINT_TO_FP, DL, Vec128VT, VCastToInt);
SDValue VecX = DAG.getNode(ISD::SCALAR_TO_VECTOR, DL, VecFPVT, X);
SDValue VCastToInt = DAG.getNode(ISD::FP_TO_SINT, DL, VecIntVT, VecX);
SDValue VCastToFP = DAG.getNode(ISD::SINT_TO_FP, DL, VecFPVT, VCastToInt);
return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, VT, VCastToFP, ZeroIdx);
}