blob: fc185d18044733ddaca90b3687344f5bbceb1096 [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+sse2 | FileCheck %s --check-prefix=SSE --check-prefix=SSE2
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+sse4.2 | FileCheck %s --check-prefix=SSE --check-prefix=SSE42
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx | FileCheck %s --check-prefix=AVX --check-prefix=AVX1
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx2 | FileCheck %s --check-prefix=AVX --check-prefix=AVX2
; PR6399
define <2 x i32> @_mul2xi32a(<2 x i32>, <2 x i32>) {
; SSE-LABEL: _mul2xi32a:
; SSE: # %bb.0:
; SSE-NEXT: pmuludq %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: _mul2xi32a:
; AVX: # %bb.0:
; AVX-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%r = mul <2 x i32> %0, %1
ret <2 x i32> %r
}
define <2 x i32> @_mul2xi32b(<2 x i32>, <2 x i32>) {
; SSE2-LABEL: _mul2xi32b:
; SSE2: # %bb.0:
; SSE2-NEXT: pmuludq %xmm1, %xmm0
; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,1,1,3]
; SSE2-NEXT: retq
;
; SSE42-LABEL: _mul2xi32b:
; SSE42: # %bb.0:
; SSE42-NEXT: pmuludq %xmm1, %xmm0
; SSE42-NEXT: pmovzxdq {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero
; SSE42-NEXT: retq
;
; AVX-LABEL: _mul2xi32b:
; AVX: # %bb.0:
; AVX-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
; AVX-NEXT: vpmovzxdq {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero
; AVX-NEXT: retq
%factor0 = shufflevector <2 x i32> %0, <2 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
%factor1 = shufflevector <2 x i32> %1, <2 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
%product64 = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %factor0, <4 x i32> %factor1) readnone
%product = bitcast <2 x i64> %product64 to <4 x i32>
%r = shufflevector <4 x i32> %product, <4 x i32> undef, <2 x i32> <i32 0, i32 4>
ret <2 x i32> %r
}
define <4 x i32> @_mul4xi32a(<4 x i32>, <4 x i32>) {
; SSE2-LABEL: _mul4xi32a:
; SSE2: # %bb.0:
; SSE2-NEXT: pshufd {{.*#+}} xmm2 = xmm0[1,1,3,3]
; SSE2-NEXT: pmuludq %xmm1, %xmm0
; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
; SSE2-NEXT: pmuludq %xmm2, %xmm1
; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
; SSE2-NEXT: punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
; SSE2-NEXT: retq
;
; SSE42-LABEL: _mul4xi32a:
; SSE42: # %bb.0:
; SSE42-NEXT: pmulld %xmm1, %xmm0
; SSE42-NEXT: retq
;
; AVX-LABEL: _mul4xi32a:
; AVX: # %bb.0:
; AVX-NEXT: vpmulld %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%r = mul <4 x i32> %0, %1
ret <4 x i32> %r
}
define <4 x i32> @_mul4xi32b(<4 x i32>, <4 x i32>) {
; SSE2-LABEL: _mul4xi32b:
; SSE2: # %bb.0:
; SSE2-NEXT: pshufd {{.*#+}} xmm2 = xmm0[1,1,3,3]
; SSE2-NEXT: pmuludq %xmm1, %xmm0
; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
; SSE2-NEXT: pmuludq %xmm2, %xmm1
; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,2,2,3]
; SSE2-NEXT: punpckldq {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
; SSE2-NEXT: retq
;
; SSE42-LABEL: _mul4xi32b:
; SSE42: # %bb.0:
; SSE42-NEXT: pshufd {{.*#+}} xmm2 = xmm0[1,1,3,3]
; SSE42-NEXT: pmuludq %xmm1, %xmm0
; SSE42-NEXT: pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
; SSE42-NEXT: pmuludq %xmm2, %xmm1
; SSE42-NEXT: pshufd {{.*#+}} xmm1 = xmm1[0,0,2,2]
; SSE42-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm1[2,3],xmm0[4,5],xmm1[6,7]
; SSE42-NEXT: retq
;
; AVX1-LABEL: _mul4xi32b:
; AVX1: # %bb.0:
; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm2
; AVX1-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
; AVX1-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
; AVX1-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,0,2,2]
; AVX1-NEXT: vpblendw {{.*#+}} xmm0 = xmm2[0,1],xmm0[2,3],xmm2[4,5],xmm0[6,7]
; AVX1-NEXT: retq
;
; AVX2-LABEL: _mul4xi32b:
; AVX2: # %bb.0:
; AVX2-NEXT: vpmuludq %xmm1, %xmm0, %xmm2
; AVX2-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
; AVX2-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
; AVX2-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
; AVX2-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,0,2,2]
; AVX2-NEXT: vpblendd {{.*#+}} xmm0 = xmm2[0],xmm0[1],xmm2[2],xmm0[3]
; AVX2-NEXT: retq
%even0 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
%even1 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
%evenMul64 = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %even0, <4 x i32> %even1) readnone
%evenMul = bitcast <2 x i64> %evenMul64 to <4 x i32>
%odd0 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 3, i32 undef>
%odd1 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 3, i32 undef>
%oddMul64 = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %odd0, <4 x i32> %odd1) readnone
%oddMul = bitcast <2 x i64> %oddMul64 to <4 x i32>
%r = shufflevector <4 x i32> %evenMul, <4 x i32> %oddMul, <4 x i32> <i32 0, i32 4, i32 2, i32 6>
ret <4 x i32> %r
}
; the following extractelement's and insertelement's
; are just an unrolled 'zext' on a vector
; %ext0 = zext <4 x i32> %0 to <4 x i64>
; %ext1 = zext <4 x i32> %1 to <4 x i64>
define <4 x i64> @_mul4xi32toi64a(<4 x i32>, <4 x i32>) {
; SSE2-LABEL: _mul4xi32toi64a:
; SSE2: # %bb.0:
; SSE2-NEXT: pshufd {{.*#+}} xmm3 = xmm1[0,1,1,3]
; SSE2-NEXT: pshufd {{.*#+}} xmm2 = xmm0[0,1,1,3]
; SSE2-NEXT: pmuludq %xmm3, %xmm2
; SSE2-NEXT: pshufd {{.*#+}} xmm3 = xmm1[2,1,3,3]
; SSE2-NEXT: pshufd {{.*#+}} xmm1 = xmm0[2,1,3,3]
; SSE2-NEXT: pmuludq %xmm3, %xmm1
; SSE2-NEXT: movdqa %xmm2, %xmm0
; SSE2-NEXT: retq
;
; SSE42-LABEL: _mul4xi32toi64a:
; SSE42: # %bb.0:
; SSE42-NEXT: pmovzxdq {{.*#+}} xmm3 = xmm1[0],zero,xmm1[1],zero
; SSE42-NEXT: pmovzxdq {{.*#+}} xmm2 = xmm0[0],zero,xmm0[1],zero
; SSE42-NEXT: pmuludq %xmm3, %xmm2
; SSE42-NEXT: pshufd {{.*#+}} xmm3 = xmm1[2,2,3,3]
; SSE42-NEXT: pshufd {{.*#+}} xmm1 = xmm0[2,2,3,3]
; SSE42-NEXT: pmuludq %xmm3, %xmm1
; SSE42-NEXT: movdqa %xmm2, %xmm0
; SSE42-NEXT: retq
;
; AVX1-LABEL: _mul4xi32toi64a:
; AVX1: # %bb.0:
; AVX1-NEXT: vpshufd {{.*#+}} xmm2 = xmm1[2,2,3,3]
; AVX1-NEXT: vpshufd {{.*#+}} xmm3 = xmm0[2,2,3,3]
; AVX1-NEXT: vpmuludq %xmm2, %xmm3, %xmm2
; AVX1-NEXT: vpmovzxdq {{.*#+}} xmm1 = xmm1[0],zero,xmm1[1],zero
; AVX1-NEXT: vpmovzxdq {{.*#+}} xmm0 = xmm0[0],zero,xmm0[1],zero
; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
; AVX1-NEXT: vinsertf128 $1, %xmm2, %ymm0, %ymm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: _mul4xi32toi64a:
; AVX2: # %bb.0:
; AVX2-NEXT: vpmovzxdq {{.*#+}} ymm0 = xmm0[0],zero,xmm0[1],zero,xmm0[2],zero,xmm0[3],zero
; AVX2-NEXT: vpmovzxdq {{.*#+}} ymm1 = xmm1[0],zero,xmm1[1],zero,xmm1[2],zero,xmm1[3],zero
; AVX2-NEXT: vpmuludq %ymm1, %ymm0, %ymm0
; AVX2-NEXT: retq
%f00 = extractelement <4 x i32> %0, i32 0
%f01 = extractelement <4 x i32> %0, i32 1
%f02 = extractelement <4 x i32> %0, i32 2
%f03 = extractelement <4 x i32> %0, i32 3
%f10 = extractelement <4 x i32> %1, i32 0
%f11 = extractelement <4 x i32> %1, i32 1
%f12 = extractelement <4 x i32> %1, i32 2
%f13 = extractelement <4 x i32> %1, i32 3
%ext00 = zext i32 %f00 to i64
%ext01 = zext i32 %f01 to i64
%ext02 = zext i32 %f02 to i64
%ext03 = zext i32 %f03 to i64
%ext10 = zext i32 %f10 to i64
%ext11 = zext i32 %f11 to i64
%ext12 = zext i32 %f12 to i64
%ext13 = zext i32 %f13 to i64
%extv00 = insertelement <4 x i64> undef, i64 %ext00, i32 0
%extv01 = insertelement <4 x i64> %extv00, i64 %ext01, i32 1
%extv02 = insertelement <4 x i64> %extv01, i64 %ext02, i32 2
%extv03 = insertelement <4 x i64> %extv02, i64 %ext03, i32 3
%extv10 = insertelement <4 x i64> undef, i64 %ext10, i32 0
%extv11 = insertelement <4 x i64> %extv10, i64 %ext11, i32 1
%extv12 = insertelement <4 x i64> %extv11, i64 %ext12, i32 2
%extv13 = insertelement <4 x i64> %extv12, i64 %ext13, i32 3
%r = mul <4 x i64> %extv03, %extv13
ret <4 x i64> %r
}
; very similar to mul4xi32 above
; there is no bitcast and the final shuffle is a little different
define <4 x i64> @_mul4xi32toi64b(<4 x i32>, <4 x i32>) {
; SSE-LABEL: _mul4xi32toi64b:
; SSE: # %bb.0:
; SSE-NEXT: movdqa %xmm0, %xmm2
; SSE-NEXT: pshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
; SSE-NEXT: pmuludq %xmm1, %xmm2
; SSE-NEXT: pshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
; SSE-NEXT: pmuludq %xmm0, %xmm1
; SSE-NEXT: movdqa %xmm2, %xmm0
; SSE-NEXT: punpcklqdq {{.*#+}} xmm0 = xmm0[0],xmm1[0]
; SSE-NEXT: punpckhqdq {{.*#+}} xmm2 = xmm2[1],xmm1[1]
; SSE-NEXT: movdqa %xmm2, %xmm1
; SSE-NEXT: retq
;
; AVX1-LABEL: _mul4xi32toi64b:
; AVX1: # %bb.0:
; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm2
; AVX1-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
; AVX1-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
; AVX1-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
; AVX1-NEXT: vpunpckhqdq {{.*#+}} xmm1 = xmm2[1],xmm0[1]
; AVX1-NEXT: vpunpcklqdq {{.*#+}} xmm0 = xmm2[0],xmm0[0]
; AVX1-NEXT: vinsertf128 $1, %xmm1, %ymm0, %ymm0
; AVX1-NEXT: retq
;
; AVX2-LABEL: _mul4xi32toi64b:
; AVX2: # %bb.0:
; AVX2-NEXT: vpmuludq %xmm1, %xmm0, %xmm2
; AVX2-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[1,1,3,3]
; AVX2-NEXT: vpshufd {{.*#+}} xmm1 = xmm1[1,1,3,3]
; AVX2-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
; AVX2-NEXT: vinserti128 $1, %xmm0, %ymm2, %ymm0
; AVX2-NEXT: vpermq {{.*#+}} ymm0 = ymm0[0,2,1,3]
; AVX2-NEXT: retq
%even0 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
%even1 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 2, i32 undef>
%evenMul = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %even0, <4 x i32> %even1) readnone
%odd0 = shufflevector <4 x i32> %0, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 3, i32 undef>
%odd1 = shufflevector <4 x i32> %1, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 3, i32 undef>
%oddMul = call <2 x i64> @llvm.x86.sse2.pmulu.dq(<4 x i32> %odd0, <4 x i32> %odd1) readnone
%r = shufflevector <2 x i64> %evenMul, <2 x i64> %oddMul, <4 x i32> <i32 0, i32 2, i32 1, i32 3>
ret <4 x i64> %r
}
; Here we do not split into even and odd indexed elements
; but into the lower and the upper half of the factor vectors.
; This makes the initial shuffle more complicated,
; but the final shuffle is a no-op.
define <4 x i64> @_mul4xi32toi64c(<4 x i32>, <4 x i32>) {
; SSE2-LABEL: _mul4xi32toi64c:
; SSE2: # %bb.0:
; SSE2-NEXT: pshufd {{.*#+}} xmm3 = xmm0[0,1,1,3]
; 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: pmuludq %xmm1, %xmm0
; SSE42-NEXT: retq
;
; AVX-LABEL: _mul2xi64toi64a:
; AVX: # %bb.0:
; AVX-NEXT: vpmuludq %xmm1, %xmm0, %xmm0
; AVX-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