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[X86] getTargetConstantBitsFromNode - remove unnecessary X86ISD::VBROADCAST handling. 

We create X86ISD::VBROADCAST_LOAD for constant pool folds now.
This commit is contained in:
Simon Pilgrim 2020-05-17 14:39:51 +01:00
parent bfd512160f
commit 9aca5b68ee
1 changed files with 0 additions and 17 deletions
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17
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -6445,23 +6445,6 @@ static bool getTargetConstantBitsFromNode(SDValue Op, unsigned EltSizeInBits,
} }
// Extract constant bits from a broadcasted constant pool scalar. // Extract constant bits from a broadcasted constant pool scalar.
if (Op.getOpcode() == X86ISD::VBROADCAST &&
EltSizeInBits <= VT.getScalarSizeInBits()) {
if (auto *Broadcast = getTargetConstantFromNode(Op.getOperand(0))) {
unsigned SrcEltSizeInBits = Broadcast->getType()->getScalarSizeInBits();
unsigned NumSrcElts = SizeInBits / SrcEltSizeInBits;
APInt UndefSrcElts(NumSrcElts, 0);
SmallVector<APInt, 64> SrcEltBits(1, APInt(SrcEltSizeInBits, 0));
if (CollectConstantBits(Broadcast, SrcEltBits[0], UndefSrcElts, 0)) {
if (UndefSrcElts[0])
UndefSrcElts.setBits(0, NumSrcElts);
SrcEltBits.append(NumSrcElts - 1, SrcEltBits[0]);
return CastBitData(UndefSrcElts, SrcEltBits);
}
}
}
if (Op.getOpcode() == X86ISD::VBROADCAST_LOAD && if (Op.getOpcode() == X86ISD::VBROADCAST_LOAD &&
EltSizeInBits <= VT.getScalarSizeInBits()) { EltSizeInBits <= VT.getScalarSizeInBits()) {
auto *MemIntr = cast<MemIntrinsicSDNode>(Op); auto *MemIntr = cast<MemIntrinsicSDNode>(Op);