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Add AVX2 instruction lowering for add, sub, and mul.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144174 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2011-11-09 07:28:55 +00:00
parent 89d093d5b6
commit aaa643c70e
2 changed files with 154 additions and 21 deletions
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99
lib/Target/X86/X86ISelLowering.cpp
View File

@ -1031,25 +1031,42 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
setOperationAction(ISD::SELECT, MVT::v4i64, Custom);
setOperationAction(ISD::SELECT, MVT::v8f32, Custom);
setOperationAction(ISD::VSELECT, MVT::v4f64, Legal);
setOperationAction(ISD::VSELECT, MVT::v4i64, Legal);
setOperationAction(ISD::VSELECT, MVT::v8i32, Legal);
setOperationAction(ISD::VSELECT, MVT::v8f32, Legal);
setOperationAction(ISD::VSELECT, MVT::v4f64, Legal);
setOperationAction(ISD::VSELECT, MVT::v4i64, Legal);
setOperationAction(ISD::VSELECT, MVT::v8i32, Legal);
setOperationAction(ISD::VSELECT, MVT::v8f32, Legal);
setOperationAction(ISD::ADD, MVT::v4i64, Custom);
setOperationAction(ISD::ADD, MVT::v8i32, Custom);
setOperationAction(ISD::ADD, MVT::v16i16, Custom);
setOperationAction(ISD::ADD, MVT::v32i8, Custom);
if (Subtarget->hasAVX2()) {
setOperationAction(ISD::ADD, MVT::v4i64, Legal);
setOperationAction(ISD::ADD, MVT::v8i32, Legal);
setOperationAction(ISD::ADD, MVT::v16i16, Legal);
setOperationAction(ISD::ADD, MVT::v32i8, Legal);
setOperationAction(ISD::SUB, MVT::v4i64, Custom);
setOperationAction(ISD::SUB, MVT::v8i32, Custom);
setOperationAction(ISD::SUB, MVT::v16i16, Custom);
setOperationAction(ISD::SUB, MVT::v32i8, Custom);
setOperationAction(ISD::SUB, MVT::v4i64, Legal);
setOperationAction(ISD::SUB, MVT::v8i32, Legal);
setOperationAction(ISD::SUB, MVT::v16i16, Legal);
setOperationAction(ISD::SUB, MVT::v32i8, Legal);
setOperationAction(ISD::MUL, MVT::v4i64, Custom);
setOperationAction(ISD::MUL, MVT::v8i32, Custom);
setOperationAction(ISD::MUL, MVT::v16i16, Custom);
// Don't lower v32i8 because there is no 128-bit byte mul
setOperationAction(ISD::MUL, MVT::v4i64, Custom);
setOperationAction(ISD::MUL, MVT::v8i32, Legal);
setOperationAction(ISD::MUL, MVT::v16i16, Legal);
// Don't lower v32i8 because there is no 128-bit byte mul
} else {
setOperationAction(ISD::ADD, MVT::v4i64, Custom);
setOperationAction(ISD::ADD, MVT::v8i32, Custom);
setOperationAction(ISD::ADD, MVT::v16i16, Custom);
setOperationAction(ISD::ADD, MVT::v32i8, Custom);
setOperationAction(ISD::SUB, MVT::v4i64, Custom);
setOperationAction(ISD::SUB, MVT::v8i32, Custom);
setOperationAction(ISD::SUB, MVT::v16i16, Custom);
setOperationAction(ISD::SUB, MVT::v32i8, Custom);
setOperationAction(ISD::MUL, MVT::v4i64, Custom);
setOperationAction(ISD::MUL, MVT::v8i32, Custom);
setOperationAction(ISD::MUL, MVT::v16i16, Custom);
// Don't lower v32i8 because there is no 128-bit byte mul
}
// Custom lower several nodes for 256-bit types.
for (unsigned i = (unsigned)MVT::FIRST_VECTOR_VALUETYPE;
@ -10004,12 +10021,55 @@ SDValue X86TargetLowering::LowerMUL(SDValue Op, SelectionDAG &DAG) const {
EVT VT = Op.getValueType();
// Decompose 256-bit ops into smaller 128-bit ops.
if (VT.getSizeInBits() == 256)
if (VT.getSizeInBits() == 256 && !Subtarget->hasAVX2())
return Lower256IntArith(Op, DAG);
assert(VT == MVT::v2i64 && "Only know how to lower V2I64 multiply");
DebugLoc dl = Op.getDebugLoc();
SDValue A = Op.getOperand(0);
SDValue B = Op.getOperand(1);
if (VT == MVT::v4i64) {
assert(Subtarget->hasAVX2() && "Lowering v4i64 multiply requires AVX2");
// ulong2 Ahi = __builtin_ia32_psrlqi256( a, 32);
// ulong2 Bhi = __builtin_ia32_psrlqi256( b, 32);
// ulong2 AloBlo = __builtin_ia32_pmuludq256( a, b );
// ulong2 AloBhi = __builtin_ia32_pmuludq256( a, Bhi );
// ulong2 AhiBlo = __builtin_ia32_pmuludq256( Ahi, b );
//
// AloBhi = __builtin_ia32_psllqi256( AloBhi, 32 );
// AhiBlo = __builtin_ia32_psllqi256( AhiBlo, 32 );
// return AloBlo + AloBhi + AhiBlo;
SDValue Ahi = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_avx2_psrli_q, MVT::i32),
A, DAG.getConstant(32, MVT::i32));
SDValue Bhi = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_avx2_psrli_q, MVT::i32),
B, DAG.getConstant(32, MVT::i32));
SDValue AloBlo = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_avx2_pmulu_dq, MVT::i32),
A, B);
SDValue AloBhi = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_avx2_pmulu_dq, MVT::i32),
A, Bhi);
SDValue AhiBlo = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_avx2_pmulu_dq, MVT::i32),
Ahi, B);
AloBhi = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_avx2_pslli_q, MVT::i32),
AloBhi, DAG.getConstant(32, MVT::i32));
AhiBlo = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_avx2_pslli_q, MVT::i32),
AhiBlo, DAG.getConstant(32, MVT::i32));
SDValue Res = DAG.getNode(ISD::ADD, dl, VT, AloBlo, AloBhi);
Res = DAG.getNode(ISD::ADD, dl, VT, Res, AhiBlo);
return Res;
}
assert(VT == MVT::v2i64 && "Only know how to lower V2I64 multiply");
// ulong2 Ahi = __builtin_ia32_psrlqi128( a, 32);
// ulong2 Bhi = __builtin_ia32_psrlqi128( b, 32);
// ulong2 AloBlo = __builtin_ia32_pmuludq128( a, b );
@ -10020,9 +10080,6 @@ SDValue X86TargetLowering::LowerMUL(SDValue Op, SelectionDAG &DAG) const {
// AhiBlo = __builtin_ia32_psllqi128( AhiBlo, 32 );
// return AloBlo + AloBhi + AhiBlo;
SDValue A = Op.getOperand(0);
SDValue B = Op.getOperand(1);
SDValue Ahi = DAG.getNode(ISD::INTRINSIC_WO_CHAIN, dl, VT,
DAG.getConstant(Intrinsic::x86_sse2_psrli_q, MVT::i32),
A, DAG.getConstant(32, MVT::i32));

76
test/CodeGen/X86/avx2-arith.ll Normal file
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@ -0,0 +1,76 @@
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=core-avx2 -mattr=+avx2 | FileCheck %s
; CHECK: vpaddq %ymm
define <4 x i64> @vpaddq(<4 x i64> %i, <4 x i64> %j) nounwind readnone {
%x = add <4 x i64> %i, %j
ret <4 x i64> %x
}
; CHECK: vpaddd %ymm
define <8 x i32> @vpaddd(<8 x i32> %i, <8 x i32> %j) nounwind readnone {
%x = add <8 x i32> %i, %j
ret <8 x i32> %x
}
; CHECK: vpaddw %ymm
define <16 x i16> @vpaddw(<16 x i16> %i, <16 x i16> %j) nounwind readnone {
%x = add <16 x i16> %i, %j
ret <16 x i16> %x
}
; CHECK: vpaddb %ymm
define <32 x i8> @vpaddb(<32 x i8> %i, <32 x i8> %j) nounwind readnone {
%x = add <32 x i8> %i, %j
ret <32 x i8> %x
}
; CHECK: vpsubq %ymm
define <4 x i64> @vpsubq(<4 x i64> %i, <4 x i64> %j) nounwind readnone {
%x = sub <4 x i64> %i, %j
ret <4 x i64> %x
}
; CHECK: vpsubd %ymm
define <8 x i32> @vpsubd(<8 x i32> %i, <8 x i32> %j) nounwind readnone {
%x = sub <8 x i32> %i, %j
ret <8 x i32> %x
}
; CHECK: vpsubw %ymm
define <16 x i16> @vpsubw(<16 x i16> %i, <16 x i16> %j) nounwind readnone {
%x = sub <16 x i16> %i, %j
ret <16 x i16> %x
}
; CHECK: vpsubb %ymm
define <32 x i8> @vpsubb(<32 x i8> %i, <32 x i8> %j) nounwind readnone {
%x = sub <32 x i8> %i, %j
ret <32 x i8> %x
}
; CHECK: vpmulld %ymm
define <8 x i32> @vpmulld(<8 x i32> %i, <8 x i32> %j) nounwind readnone {
%x = mul <8 x i32> %i, %j
ret <8 x i32> %x
}
; CHECK: vpmullw %ymm
define <16 x i16> @vpmullw(<16 x i16> %i, <16 x i16> %j) nounwind readnone {
%x = mul <16 x i16> %i, %j
ret <16 x i16> %x
}
; CHECK: vpmuludq %ymm
; CHECK-NEXT: vpsrlq $32, %ymm
; CHECK-NEXT: vpmuludq %ymm
; CHECK-NEXT: vpsllq $32, %ymm
; CHECK-NEXT: vpaddq %ymm
; CHECK-NEXT: vpsrlq $32, %ymm
; CHECK-NEXT: vpmuludq %ymm
; CHECK-NEXT: vpsllq $32, %ymm
; CHECK-NEXT: vpaddq %ymm
define <4 x i64> @mul-v4i64(<4 x i64> %i, <4 x i64> %j) nounwind readnone {
%x = mul <4 x i64> %i, %j
ret <4 x i64> %x
}