forked from OSchip/llvm-project
410 lines
17 KiB
LLVM
410 lines
17 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+sse2 | FileCheck %s --check-prefix=SSE --check-prefix=SSE2
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; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+sse4.2 | FileCheck %s --check-prefix=SSE --check-prefix=SSE42
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; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx | FileCheck %s --check-prefix=AVX --check-prefix=AVX1
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; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx2 | FileCheck %s --check-prefix=AVX --check-prefix=AVX2
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; PR6399
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define <2 x i32> @_mul2xi32a(<2 x i32>, <2 x i32>) {
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; SSE-LABEL: _mul2xi32a:
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; SSE: # %bb.0:
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; SSE-NEXT: movdqa %xmm0, %xmm2
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; SSE-NEXT: psrlq $32, %xmm2
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; SSE-NEXT: pmuludq %xmm1, %xmm2
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; SSE-NEXT: movdqa %xmm1, %xmm3
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; SSE-NEXT: psrlq $32, %xmm3
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; SSE-NEXT: pmuludq %xmm0, %xmm3
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; SSE-NEXT: paddq %xmm2, %xmm3
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; SSE-NEXT: psllq $32, %xmm3
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; SSE-NEXT: pmuludq %xmm1, %xmm0
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; SSE-NEXT: paddq %xmm3, %xmm0
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; SSE-NEXT: retq
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;
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; AVX-LABEL: _mul2xi32a:
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; AVX: # %bb.0:
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; AVX-NEXT: vpsrlq $32, %xmm0, %xmm2
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; AVX-NEXT: vpmuludq %xmm1, %xmm2, %xmm2
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; AVX-NEXT: vpsrlq $32, %xmm1, %xmm3
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; AVX-NEXT: vpmuludq %xmm3, %xmm0, %xmm3
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; AVX-NEXT: vpaddq %xmm2, %xmm3, %xmm2
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; AVX-NEXT: vpsllq $32, %xmm2, %xmm2
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; AVX-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
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; AVX-NEXT: vpaddq %xmm2, %xmm0, %xmm0
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; AVX-NEXT: retq
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%r = mul <2 x i32> %0, %1
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ret <2 x i32> %r
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}
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define <2 x i32> @_mul2xi32b(<2 x i32>, <2 x i32>) {
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; SSE2-LABEL: _mul2xi32b:
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; SSE2: # %bb.0:
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; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
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; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
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; SSE2-NEXT: pmuludq %xmm0, %xmm1
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; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm1[0,1,1,3]
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; SSE2-NEXT: retq
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;
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; SSE42-LABEL: _mul2xi32b:
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; SSE42: # %bb.0:
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; SSE42-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
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; SSE42-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
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; SSE42-NEXT: pmuludq %xmm0, %xmm1
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; SSE42-NEXT: pmovzxdq {{.*#+}} xmm0 = xmm1[0],zero,xmm1[1],zero
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; SSE42-NEXT: retq
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;
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; AVX-LABEL: _mul2xi32b:
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; AVX: # %bb.0:
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; AVX-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
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; AVX-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
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; AVX-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
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; AVX-NEXT: vpmovzxdq {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero
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; AVX-NEXT: retq
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%factor0 = shufflevector <2 x i32> %0, <2 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
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%factor1 = shufflevector <2 x i32> %1, <2 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
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%product64 = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %factor0, <4 x i32> %factor1) readnone
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%product = bitcast <2 x i64> %product64 to <4 x i32>
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%r = shufflevector <4 x i32> %product, <4 x i32> undef, <2 x i32> <i32 0, i32 4>
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ret <2 x i32> %r
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}
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define <4 x i32> @_mul4xi32a(<4 x i32>, <4 x i32>) {
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; SSE2-LABEL: _mul4xi32a:
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; SSE2: # %bb.0:
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; SSE2-NEXT: pshufd {{.*#+}} xmm2 = xmm0[1,1,3,3]
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; SSE2-NEXT: pmuludq %xmm1, %xmm0
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; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
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; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
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; SSE2-NEXT: pmuludq %xmm2, %xmm1
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; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
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; SSE2-NEXT: punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
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; SSE2-NEXT: retq
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;
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; SSE42-LABEL: _mul4xi32a:
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; SSE42: # %bb.0:
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; SSE42-NEXT: pmulld %xmm1, %xmm0
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; SSE42-NEXT: retq
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;
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; AVX-LABEL: _mul4xi32a:
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; AVX: # %bb.0:
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; AVX-NEXT: vpmulld %xmm1, %xmm0, %xmm0
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; AVX-NEXT: retq
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%r = mul <4 x i32> %0, %1
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ret <4 x i32> %r
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}
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define <4 x i32> @_mul4xi32b(<4 x i32>, <4 x i32>) {
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; SSE2-LABEL: _mul4xi32b:
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; SSE2: # %bb.0:
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; SSE2-NEXT: pshufd {{.*#+}} xmm2 = xmm0[1,1,3,3]
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; SSE2-NEXT: pmuludq %xmm1, %xmm0
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; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
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; SSE2-NEXT: pmuludq %xmm2, %xmm1
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; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
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; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
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; SSE2-NEXT: punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
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; SSE2-NEXT: retq
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;
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; SSE42-LABEL: _mul4xi32b:
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; SSE42: # %bb.0:
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; SSE42-NEXT: pshufd {{.*#+}} xmm2 = xmm0[1,1,3,3]
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; SSE42-NEXT: pmuludq %xmm1, %xmm0
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; SSE42-NEXT: pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
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; SSE42-NEXT: pmuludq %xmm2, %xmm1
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; SSE42-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,0,2,2]
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; SSE42-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm1[2,3],xmm0[4,5],xmm1[6,7]
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; SSE42-NEXT: retq
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;
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; AVX1-LABEL: _mul4xi32b:
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; AVX1: # %bb.0:
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; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm2
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; AVX1-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
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; AVX1-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
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; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
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; AVX1-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,0,2,2]
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; AVX1-NEXT: vpblendw {{.*#+}} xmm0 = xmm2[0,1],xmm0[2,3],xmm2[4,5],xmm0[6,7]
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; AVX1-NEXT: retq
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;
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; AVX2-LABEL: _mul4xi32b:
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; AVX2: # %bb.0:
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; AVX2-NEXT: vpmuludq %xmm1, %xmm0, %xmm2
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; AVX2-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
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; AVX2-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
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; AVX2-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
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; AVX2-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,0,2,2]
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; AVX2-NEXT: vpblendd {{.*#+}} xmm0 = xmm2[0],xmm0[1],xmm2[2],xmm0[3]
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; AVX2-NEXT: retq
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%even0 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
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%even1 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
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%evenMul64 = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %even0, <4 x i32> %even1) readnone
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%evenMul = bitcast <2 x i64> %evenMul64 to <4 x i32>
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%odd0 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 3, i32 undef>
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%odd1 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 3, i32 undef>
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%oddMul64 = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %odd0, <4 x i32> %odd1) readnone
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%oddMul = bitcast <2 x i64> %oddMul64 to <4 x i32>
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%r = shufflevector <4 x i32> %evenMul, <4 x i32> %oddMul, <4 x i32> <i32 0, i32 4, i32 2, i32 6>
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ret <4 x i32> %r
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}
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; the following extractelement's and insertelement's
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; are just an unrolled 'zext' on a vector
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; %ext0 = zext <4 x i32> %0 to <4 x i64>
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; %ext1 = zext <4 x i32> %1 to <4 x i64>
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define <4 x i64> @_mul4xi32toi64a(<4 x i32>, <4 x i32>) {
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; SSE2-LABEL: _mul4xi32toi64a:
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; SSE2: # %bb.0:
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; SSE2-NEXT: pxor %xmm3, %xmm3
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; SSE2-NEXT: movdqa %xmm0, %xmm4
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; SSE2-NEXT: punpckhdq {{.*#+}} xmm4 = xmm4[2],xmm3[2],xmm4[3],xmm3[3]
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; SSE2-NEXT: punpckldq {{.*#+}} xmm0 = xmm0[0],xmm3[0],xmm0[1],xmm3[1]
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; SSE2-NEXT: movdqa %xmm1, %xmm2
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; SSE2-NEXT: punpckhdq {{.*#+}} xmm2 = xmm2[2],xmm3[2],xmm2[3],xmm3[3]
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; SSE2-NEXT: pmuludq %xmm4, %xmm2
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; SSE2-NEXT: punpckldq {{.*#+}} xmm1 = xmm1[0],xmm3[0],xmm1[1],xmm3[1]
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; SSE2-NEXT: pmuludq %xmm1, %xmm0
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; SSE2-NEXT: movdqa %xmm2, %xmm1
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; SSE2-NEXT: retq
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;
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; SSE42-LABEL: _mul4xi32toi64a:
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; SSE42: # %bb.0:
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; SSE42-NEXT: pshufd {{.*#+}} xmm2 = xmm0[2,3,0,1]
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; SSE42-NEXT: pmovzxdq {{.*#+}} xmm3 = xmm2[0],zero,xmm2[1],zero
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; SSE42-NEXT: pmovzxdq {{.*#+}} xmm4 = xmm0[0],zero,xmm0[1],zero
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; SSE42-NEXT: pshufd {{.*#+}} xmm0 = xmm1[2,3,0,1]
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; SSE42-NEXT: pmovzxdq {{.*#+}} xmm2 = xmm0[0],zero,xmm0[1],zero
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; SSE42-NEXT: pmuludq %xmm3, %xmm2
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; SSE42-NEXT: pmovzxdq {{.*#+}} xmm0 = xmm1[0],zero,xmm1[1],zero
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; SSE42-NEXT: pmuludq %xmm4, %xmm0
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; SSE42-NEXT: movdqa %xmm2, %xmm1
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; SSE42-NEXT: retq
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;
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; AVX1-LABEL: _mul4xi32toi64a:
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; AVX1: # %bb.0:
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; AVX1-NEXT: vpshufd {{.*#+}} xmm2 = xmm1[2,2,3,3]
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; AVX1-NEXT: vpshufd {{.*#+}} xmm3 = xmm0[2,2,3,3]
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; AVX1-NEXT: vpmuludq %xmm2, %xmm3, %xmm2
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; AVX1-NEXT: vpmovzxdq {{.*#+}} xmm1 = xmm1[0],zero,xmm1[1],zero
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; AVX1-NEXT: vpmovzxdq {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero
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; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
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; AVX1-NEXT: vinsertf128 $1, %xmm2, %ymm0, %ymm0
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; AVX1-NEXT: retq
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;
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; AVX2-LABEL: _mul4xi32toi64a:
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; AVX2: # %bb.0:
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; AVX2-NEXT: vpmovzxdq {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
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; AVX2-NEXT: vpmovzxdq {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero
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; AVX2-NEXT: vpmuludq %ymm1, %ymm0, %ymm0
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; AVX2-NEXT: retq
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%f00 = extractelement <4 x i32> %0, i32 0
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%f01 = extractelement <4 x i32> %0, i32 1
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%f02 = extractelement <4 x i32> %0, i32 2
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%f03 = extractelement <4 x i32> %0, i32 3
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%f10 = extractelement <4 x i32> %1, i32 0
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%f11 = extractelement <4 x i32> %1, i32 1
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%f12 = extractelement <4 x i32> %1, i32 2
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%f13 = extractelement <4 x i32> %1, i32 3
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%ext00 = zext i32 %f00 to i64
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%ext01 = zext i32 %f01 to i64
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%ext02 = zext i32 %f02 to i64
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%ext03 = zext i32 %f03 to i64
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%ext10 = zext i32 %f10 to i64
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%ext11 = zext i32 %f11 to i64
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%ext12 = zext i32 %f12 to i64
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%ext13 = zext i32 %f13 to i64
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%extv00 = insertelement <4 x i64> undef, i64 %ext00, i32 0
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%extv01 = insertelement <4 x i64> %extv00, i64 %ext01, i32 1
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%extv02 = insertelement <4 x i64> %extv01, i64 %ext02, i32 2
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%extv03 = insertelement <4 x i64> %extv02, i64 %ext03, i32 3
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%extv10 = insertelement <4 x i64> undef, i64 %ext10, i32 0
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%extv11 = insertelement <4 x i64> %extv10, i64 %ext11, i32 1
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%extv12 = insertelement <4 x i64> %extv11, i64 %ext12, i32 2
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%extv13 = insertelement <4 x i64> %extv12, i64 %ext13, i32 3
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%r = mul <4 x i64> %extv03, %extv13
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ret <4 x i64> %r
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}
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; very similar to mul4xi32 above
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; there is no bitcast and the final shuffle is a little different
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define <4 x i64> @_mul4xi32toi64b(<4 x i32>, <4 x i32>) {
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; SSE-LABEL: _mul4xi32toi64b:
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; SSE: # %bb.0:
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; SSE-NEXT: movdqa %xmm0, %xmm2
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; SSE-NEXT: pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
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; SSE-NEXT: pmuludq %xmm1, %xmm2
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; SSE-NEXT: pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
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; SSE-NEXT: pmuludq %xmm0, %xmm1
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; SSE-NEXT: movdqa %xmm2, %xmm0
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; SSE-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
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; SSE-NEXT: punpckhqdq {{.*#+}} xmm2 = xmm2[1],xmm1[1]
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; SSE-NEXT: movdqa %xmm2, %xmm1
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; SSE-NEXT: retq
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;
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; AVX1-LABEL: _mul4xi32toi64b:
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; AVX1: # %bb.0:
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; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm2
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; AVX1-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
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; AVX1-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
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; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
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; AVX1-NEXT: vpunpckhqdq {{.*#+}} xmm1 = xmm2[1],xmm0[1]
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; AVX1-NEXT: vpunpcklqdq {{.*#+}} xmm0 = xmm2[0],xmm0[0]
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; AVX1-NEXT: vinsertf128 $1, %xmm1, %ymm0, %ymm0
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; AVX1-NEXT: retq
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;
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; AVX2-LABEL: _mul4xi32toi64b:
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; AVX2: # %bb.0:
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; AVX2-NEXT: vpmuludq %xmm1, %xmm0, %xmm2
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; AVX2-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
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; AVX2-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
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; AVX2-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
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; AVX2-NEXT: vinserti128 $1, %xmm0, %ymm2, %ymm0
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; AVX2-NEXT: vpermq {{.*#+}} ymm0 = ymm0[0,2,1,3]
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; AVX2-NEXT: retq
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%even0 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
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%even1 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
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%evenMul = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %even0, <4 x i32> %even1) readnone
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%odd0 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 3, i32 undef>
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%odd1 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 3, i32 undef>
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%oddMul = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %odd0, <4 x i32> %odd1) readnone
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%r = shufflevector <2 x i64> %evenMul, <2 x i64> %oddMul, <4 x i32> <i32 0, i32 2, i32 1, i32 3>
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ret <4 x i64> %r
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}
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; Here we do not split into even and odd indexed elements
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; but into the lower and the upper half of the factor vectors.
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; This makes the initial shuffle more complicated,
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; but the final shuffle is a no-op.
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define <4 x i64> @_mul4xi32toi64c(<4 x i32>, <4 x i32>) {
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; SSE2-LABEL: _mul4xi32toi64c:
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; SSE2: # %bb.0:
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; SSE2-NEXT: pshufd {{.*#+}} xmm3 = xmm0[0,1,1,3]
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|
; SSE2-NEXT: pshufd {{.*#+}} xmm2 = xmm1[0,1,1,3]
|
|
; SSE2-NEXT: pmuludq %xmm3, %xmm2
|
|
; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[2,1,3,3]
|
|
; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[2,1,3,3]
|
|
; SSE2-NEXT: pmuludq %xmm0, %xmm1
|
|
; SSE2-NEXT: movdqa %xmm2, %xmm0
|
|
; SSE2-NEXT: retq
|
|
;
|
|
; SSE42-LABEL: _mul4xi32toi64c:
|
|
; SSE42: # %bb.0:
|
|
; SSE42-NEXT: pmovzxdq {{.*#+}} xmm3 = xmm0[0],zero,xmm0[1],zero
|
|
; SSE42-NEXT: pmovzxdq {{.*#+}} xmm2 = xmm1[0],zero,xmm1[1],zero
|
|
; SSE42-NEXT: pmuludq %xmm3, %xmm2
|
|
; SSE42-NEXT: pshufd {{.*#+}} xmm0 = xmm0[2,2,3,3]
|
|
; SSE42-NEXT: pshufd {{.*#+}} xmm1 = xmm1[2,2,3,3]
|
|
; SSE42-NEXT: pmuludq %xmm0, %xmm1
|
|
; SSE42-NEXT: movdqa %xmm2, %xmm0
|
|
; SSE42-NEXT: retq
|
|
;
|
|
; AVX1-LABEL: _mul4xi32toi64c:
|
|
; AVX1: # %bb.0:
|
|
; AVX1-NEXT: vpmovzxdq {{.*#+}} xmm2 = xmm0[0],zero,xmm0[1],zero
|
|
; AVX1-NEXT: vpmovzxdq {{.*#+}} xmm3 = xmm1[0],zero,xmm1[1],zero
|
|
; AVX1-NEXT: vpmuludq %xmm3, %xmm2, %xmm2
|
|
; AVX1-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[2,2,3,3]
|
|
; AVX1-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[2,2,3,3]
|
|
; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
|
|
; AVX1-NEXT: vinsertf128 $1, %xmm0, %ymm2, %ymm0
|
|
; AVX1-NEXT: retq
|
|
;
|
|
; AVX2-LABEL: _mul4xi32toi64c:
|
|
; AVX2: # %bb.0:
|
|
; AVX2-NEXT: vpmovzxdq {{.*#+}} xmm2 = xmm0[0],zero,xmm0[1],zero
|
|
; AVX2-NEXT: vpmovzxdq {{.*#+}} xmm3 = xmm1[0],zero,xmm1[1],zero
|
|
; AVX2-NEXT: vpmuludq %xmm3, %xmm2, %xmm2
|
|
; AVX2-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[2,2,3,3]
|
|
; AVX2-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[2,2,3,3]
|
|
; AVX2-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
|
|
; AVX2-NEXT: vinserti128 $1, %xmm0, %ymm2, %ymm0
|
|
; AVX2-NEXT: retq
|
|
%lower0 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 1, i32 undef>
|
|
%lower1 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 1, i32 undef>
|
|
%lowerMul = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %lower0, <4 x i32> %lower1) readnone
|
|
%upper0 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 2, i32 undef, i32 3, i32 undef>
|
|
%upper1 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 2, i32 undef, i32 3, i32 undef>
|
|
%upperMul = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %upper0, <4 x i32> %upper1) readnone
|
|
%r = shufflevector <2 x i64> %lowerMul, <2 x i64> %upperMul, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
|
|
ret <4 x i64> %r
|
|
}
|
|
|
|
; If we know, that the most significant half of i64 elements are zero,
|
|
; then multiplication can be simplified drastically.
|
|
; In the following example I assert a zero upper half
|
|
; by 'trunc' followed by 'zext'.
|
|
;
|
|
; the following extractelement's and insertelement's
|
|
; are just an unrolled 'trunc' plus 'zext' on a vector
|
|
; %trunc0 = trunc <2 x i64> %0 to <2 x i32>
|
|
; %trunc1 = trunc <2 x i64> %1 to <2 x i32>
|
|
; %ext0 = zext <2 x i32> %0 to <2 x i64>
|
|
; %ext1 = zext <2 x i32> %1 to <2 x i64>
|
|
define <2 x i64> @_mul2xi64toi64a(<2 x i64>, <2 x i64>) {
|
|
; SSE2-LABEL: _mul2xi64toi64a:
|
|
; SSE2: # %bb.0:
|
|
; SSE2-NEXT: movdqa {{.*#+}} xmm2 = [4294967295,4294967295]
|
|
; SSE2-NEXT: pand %xmm2, %xmm0
|
|
; SSE2-NEXT: pand %xmm2, %xmm1
|
|
; SSE2-NEXT: pmuludq %xmm1, %xmm0
|
|
; SSE2-NEXT: retq
|
|
;
|
|
; SSE42-LABEL: _mul2xi64toi64a:
|
|
; SSE42: # %bb.0:
|
|
; SSE42-NEXT: pxor %xmm2, %xmm2
|
|
; SSE42-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm2[2,3],xmm0[4,5],xmm2[6,7]
|
|
; SSE42-NEXT: pblendw {{.*#+}} xmm1 = xmm1[0,1],xmm2[2,3],xmm1[4,5],xmm2[6,7]
|
|
; SSE42-NEXT: pmuludq %xmm1, %xmm0
|
|
; SSE42-NEXT: retq
|
|
;
|
|
; AVX1-LABEL: _mul2xi64toi64a:
|
|
; AVX1: # %bb.0:
|
|
; AVX1-NEXT: vpxor %xmm2, %xmm2, %xmm2
|
|
; AVX1-NEXT: vpblendw {{.*#+}} xmm0 = xmm0[0,1],xmm2[2,3],xmm0[4,5],xmm2[6,7]
|
|
; AVX1-NEXT: vpblendw {{.*#+}} xmm1 = xmm1[0,1],xmm2[2,3],xmm1[4,5],xmm2[6,7]
|
|
; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
|
|
; AVX1-NEXT: retq
|
|
;
|
|
; AVX2-LABEL: _mul2xi64toi64a:
|
|
; AVX2: # %bb.0:
|
|
; AVX2-NEXT: vpxor %xmm2, %xmm2, %xmm2
|
|
; AVX2-NEXT: vpblendd {{.*#+}} xmm0 = xmm0[0],xmm2[1],xmm0[2],xmm2[3]
|
|
; AVX2-NEXT: vpblendd {{.*#+}} xmm1 = xmm1[0],xmm2[1],xmm1[2],xmm2[3]
|
|
; AVX2-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
|
|
; AVX2-NEXT: retq
|
|
%f00 = extractelement <2 x i64> %0, i32 0
|
|
%f01 = extractelement <2 x i64> %0, i32 1
|
|
%f10 = extractelement <2 x i64> %1, i32 0
|
|
%f11 = extractelement <2 x i64> %1, i32 1
|
|
%trunc00 = trunc i64 %f00 to i32
|
|
%trunc01 = trunc i64 %f01 to i32
|
|
%ext00 = zext i32 %trunc00 to i64
|
|
%ext01 = zext i32 %trunc01 to i64
|
|
%trunc10 = trunc i64 %f10 to i32
|
|
%trunc11 = trunc i64 %f11 to i32
|
|
%ext10 = zext i32 %trunc10 to i64
|
|
%ext11 = zext i32 %trunc11 to i64
|
|
%extv00 = insertelement <2 x i64> undef, i64 %ext00, i32 0
|
|
%extv01 = insertelement <2 x i64> %extv00, i64 %ext01, i32 1
|
|
%extv10 = insertelement <2 x i64> undef, i64 %ext10, i32 0
|
|
%extv11 = insertelement <2 x i64> %extv10, i64 %ext11, i32 1
|
|
%r = mul <2 x i64> %extv01, %extv11
|
|
ret <2 x i64> %r
|
|
}
|
|
|
|
define <2 x i64> @_mul2xi64toi64b(<2 x i64>, <2 x i64>) {
|
|
; SSE-LABEL: _mul2xi64toi64b:
|
|
; SSE: # %bb.0:
|
|
; SSE-NEXT: pmuludq %xmm1, %xmm0
|
|
; SSE-NEXT: retq
|
|
;
|
|
; AVX-LABEL: _mul2xi64toi64b:
|
|
; AVX: # %bb.0:
|
|
; AVX-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
|
|
; AVX-NEXT: retq
|
|
%f0 = bitcast <2 x i64> %0 to <4 x i32>
|
|
%f1 = bitcast <2 x i64> %1 to <4 x i32>
|
|
%r = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %f0, <4 x i32> %f1) readnone
|
|
ret <2 x i64> %r
|
|
}
|
|
|
|
declare <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32>, <4 x i32>) nounwind readnone
|