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Implement feedback from Bruno on making pblendvb an x86-specific ISD node in addition to being an intrinsic, and convert

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lowering to use it.  Hopefully the pattern fragment is doing the right thing with XMM0, looks correct in testing.

llvm-svn: 122277
This commit is contained in:
Nate Begeman 2010-12-20 22:04:24 +00:00
parent 11bdb2e5b5
commit c7dfecb10e
4 changed files with 14 additions and 11 deletions
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16
lib/Target/X86/X86ISelLowering.cpp
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@ -8398,9 +8398,7 @@ SDValue X86TargetLowering::LowerSHL(SDValue Op, SelectionDAG &DAG) const {
M = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_sse2_pslli_w, MVT::i32), M,
DAG.getConstant(4, MVT::i32));
R = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_sse41_pblendvb, MVT::i32),
R, M, Op);
R = DAG.getNode(X86ISD::PBLENDVB, dl, VT, R, M, Op);
// a += a
Op = DAG.getNode(ISD::ADD, dl, VT, Op, Op);
@ -8415,15 +8413,12 @@ SDValue X86TargetLowering::LowerSHL(SDValue Op, SelectionDAG &DAG) const {
M = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_sse2_pslli_w, MVT::i32), M,
DAG.getConstant(2, MVT::i32));
R = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_sse41_pblendvb, MVT::i32),
R, M, Op);
R = DAG.getNode(X86ISD::PBLENDVB, dl, VT, R, M, Op);
// a += a
Op = DAG.getNode(ISD::ADD, dl, VT, Op, Op);
// return pblendv(r, r+r, a);
R = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_sse41_pblendvb, MVT::i32),
R = DAG.getNode(X86ISD::PBLENDVB, dl, VT,
R, DAG.getNode(ISD::ADD, dl, VT, R, R), Op);
return R;
}
@ -8897,6 +8892,7 @@ const char *X86TargetLowering::getTargetNodeName(unsigned Opcode) const {
case X86ISD::PSIGNB: return "X86ISD::PSIGNB";
case X86ISD::PSIGNW: return "X86ISD::PSIGNW";
case X86ISD::PSIGND: return "X86ISD::PSIGND";
case X86ISD::PBLENDVB: return "X86ISD::PBLENDVB";
case X86ISD::FMAX: return "X86ISD::FMAX";
case X86ISD::FMIN: return "X86ISD::FMIN";
case X86ISD::FRSQRT: return "X86ISD::FRSQRT";
@ -11209,12 +11205,10 @@ static SDValue PerformOrCombine(SDNode *N, SelectionDAG &DAG,
if (!Subtarget->hasSSE41())
return SDValue();
unsigned IID = Intrinsic::x86_sse41_pblendvb;
X = DAG.getNode(ISD::BITCAST, DL, MVT::v16i8, X);
Y = DAG.getNode(ISD::BITCAST, DL, MVT::v16i8, Y);
Mask = DAG.getNode(ISD::BITCAST, DL, MVT::v16i8, Mask);
Mask = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, DL, MVT::v16i8,
DAG.getConstant(IID, MVT::i32), X, Y, Mask);
Mask = DAG.getNode(X86ISD::PBLENDVB, DL, MVT::v16i8, X, Y, Mask);
return DAG.getNode(ISD::BITCAST, DL, MVT::v2i64, Mask);
}
}

3
lib/Target/X86/X86ISelLowering.h
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@ -166,6 +166,9 @@ namespace llvm {
/// PSIGNB/W/D - Copy integer sign.
PSIGNB, PSIGNW, PSIGND,
/// PBLENDVB - Variable blend
PBLENDVB,
/// FMAX, FMIN - Floating point max and min.
///
FMAX, FMIN,

3
lib/Target/X86/X86InstrFragmentsSIMD.td
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@ -55,6 +55,9 @@ def X86psignw : SDNode<"X86ISD::PSIGNW",
def X86psignd : SDNode<"X86ISD::PSIGND",
SDTypeProfile<1, 2, [SDTCisVT<0, v4i32>, SDTCisSameAs<0,1>,
SDTCisSameAs<0,2>]>>;
def X86pblendv : SDNode<"X86ISD::PBLENDVB",
SDTypeProfile<1, 3, [SDTCisVT<0, v16i8>, SDTCisSameAs<0,1>,
SDTCisSameAs<0,2>, SDTCisSameAs<0,3>]>>;
def X86pextrb : SDNode<"X86ISD::PEXTRB",
SDTypeProfile<1, 2, [SDTCisVT<0, i32>, SDTCisPtrTy<2>]>>;
def X86pextrw : SDNode<"X86ISD::PEXTRW",

3
lib/Target/X86/X86InstrSSE.td
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@ -4855,6 +4855,9 @@ defm BLENDVPD : SS41I_ternary_int<0x15, "blendvpd", int_x86_sse41_blendvpd>;
defm BLENDVPS : SS41I_ternary_int<0x14, "blendvps", int_x86_sse41_blendvps>;
defm PBLENDVB : SS41I_ternary_int<0x10, "pblendvb", int_x86_sse41_pblendvb>;
def : Pat<(X86pblendv VR128:$src1, VR128:$src2, XMM0),
(PBLENDVBrr0 VR128:$src1, VR128:$src2)>;
let isAsmParserOnly = 1, Predicates = [HasAVX] in
def VMOVNTDQArm : SS48I<0x2A, MRMSrcMem, (outs VR128:$dst), (ins i128mem:$src),
"vmovntdqa\t{$src, $dst|$dst, $src}",