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[X86][SSE] Merge SSE2 PINSRW lowering with SSE41 PINSRB/PINSRW lowering. NFCI.

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These are identical apart from the extra SSE41 guard for PINSRB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293766 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Simon Pilgrim 2017-02-01 13:32:19 +00:00
parent 47d1df4cfd
commit 30afc90a60
1 changed files with 21 additions and 32 deletions
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27
lib/Target/X86/X86ISelLowering.cpp
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@ -13921,18 +13921,19 @@ SDValue X86TargetLowering::LowerINSERT_VECTOR_ELT(SDValue Op,
}
assert(VT.is128BitVector() && "Only 128-bit vector types should be left!");
if (Subtarget.hasSSE41()) {
if (EltVT.getSizeInBits() == 8 || EltVT.getSizeInBits() == 16) {
// Transform it so it match pinsr{b,w} which expects a GR32 as its second
// argument. SSE41 required for pinsrb.
if (VT == MVT::v8i16 || (VT == MVT::v16i8 && Subtarget.hasSSE41())) {
unsigned Opc;
if (VT == MVT::v8i16) {
assert(Subtarget.hasSSE2() && "SSE2 required for PINSRW");
Opc = X86ISD::PINSRW;
} else {
assert(VT == MVT::v16i8);
assert(VT == MVT::v16i8 && "PINSRB requires v16i8 vector");
assert(Subtarget.hasSSE41() && "SSE41 required for PINSRB");
Opc = X86ISD::PINSRB;
}
// Transform it so it match pinsr{b,w} which expects a GR32 as its second
// argument.
if (N1.getValueType() != MVT::i32)
N1 = DAG.getNode(ISD::ANY_EXTEND, dl, MVT::i32, N1);
if (N2.getValueType() != MVT::i32)
@ -13940,6 +13941,7 @@ SDValue X86TargetLowering::LowerINSERT_VECTOR_ELT(SDValue Op,
return DAG.getNode(Opc, dl, VT, N0, N1, N2);
}
if (Subtarget.hasSSE41()) {
if (EltVT == MVT::f32) {
// 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
@ -13969,24 +13971,11 @@ SDValue X86TargetLowering::LowerINSERT_VECTOR_ELT(SDValue Op,
return DAG.getNode(X86ISD::INSERTPS, dl, VT, N0, N1, N2);
}
if (EltVT == MVT::i32 || EltVT == MVT::i64) {
// PINSR* works with constant index.
if (EltVT == MVT::i32 || EltVT == MVT::i64)
return Op;
}
}
if (EltVT == MVT::i8)
return SDValue();
if (EltVT.getSizeInBits() == 16) {
// Transform it so it match pinsrw which expects a 16-bit value in a GR32
// as its second argument.
if (N1.getValueType() != MVT::i32)
N1 = DAG.getNode(ISD::ANY_EXTEND, dl, MVT::i32, N1);
if (N2.getValueType() != MVT::i32)
N2 = DAG.getIntPtrConstant(IdxVal, dl);
return DAG.getNode(X86ISD::PINSRW, dl, VT, N0, N1, N2);
}
return SDValue();
}