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Add test case peeking through vector concat when combining insert into shuffles. NFC

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llvm-svn: 373171
This commit is contained in:
Amaury Sechet 2019-09-29 17:54:03 +00:00
parent 909ec9e622
commit f1f66201d3
1 changed files with 71 additions and 0 deletions
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71
test/CodeGen/X86/vector-shuffle-combining.ll
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@ -2910,3 +2910,74 @@ define <8 x i16> @shuffle_extract_insert_double(<8 x i16> %a, <8 x i16> %b) {
%7 = insertelement <8 x i16> %6, i16 %b15, i32 7
ret <8 x i16> %7
}
define <8 x i16> @shuffle_extract_concat_insert(<4 x i16> %lhsa, <4 x i16> %rhsa, <8 x i16> %b) {
; SSE2-LABEL: shuffle_extract_concat_insert:
; SSE2: # %bb.0:
; SSE2-NEXT: movd %xmm1, %eax
; SSE2-NEXT: pextrw $2, %xmm1, %ecx
; SSE2-NEXT: pextrw $5, %xmm2, %edx
; SSE2-NEXT: pextrw $7, %xmm2, %esi
; SSE2-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm2[0],xmm0[1],xmm2[1],xmm0[2],xmm2[2],xmm0[3],xmm2[3]
; SSE2-NEXT: pshufhw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,7,6,7]
; SSE2-NEXT: pshufd {{.*#+}} xmm0 = xmm0[0,2,2,3]
; SSE2-NEXT: pshuflw {{.*#+}} xmm0 = xmm0[2,1,0,3,4,5,6,7]
; SSE2-NEXT: pinsrw $4, %ecx, %xmm0
; SSE2-NEXT: pinsrw $5, %edx, %xmm0
; SSE2-NEXT: pinsrw $6, %eax, %xmm0
; SSE2-NEXT: pinsrw $7, %esi, %xmm0
; SSE2-NEXT: retq
;
; SSSE3-LABEL: shuffle_extract_concat_insert:
; SSSE3: # %bb.0:
; SSSE3-NEXT: pextrw $2, %xmm1, %eax
; SSSE3-NEXT: pextrw $5, %xmm2, %ecx
; SSSE3-NEXT: pextrw $7, %xmm2, %edx
; SSSE3-NEXT: movd %xmm1, %esi
; SSSE3-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm2[0],xmm0[1],xmm2[1],xmm0[2],xmm2[2],xmm0[3],xmm2[3]
; SSSE3-NEXT: pshufb {{.*#+}} xmm0 = xmm0[8,9,2,3,0,1,14,15,8,9,14,15,12,13,14,15]
; SSSE3-NEXT: pinsrw $4, %eax, %xmm0
; SSSE3-NEXT: pinsrw $5, %ecx, %xmm0
; SSSE3-NEXT: pinsrw $6, %esi, %xmm0
; SSSE3-NEXT: pinsrw $7, %edx, %xmm0
; SSSE3-NEXT: retq
;
; SSE41-LABEL: shuffle_extract_concat_insert:
; SSE41: # %bb.0:
; SSE41-NEXT: movd %xmm1, %eax
; SSE41-NEXT: pextrw $2, %xmm1, %ecx
; SSE41-NEXT: punpcklwd {{.*#+}} xmm0 = xmm0[0],xmm2[0],xmm0[1],xmm2[1],xmm0[2],xmm2[2],xmm0[3],xmm2[3]
; SSE41-NEXT: pshufb {{.*#+}} xmm0 = xmm0[8,9,2,3,0,1,14,15,8,9,14,15,12,13,14,15]
; SSE41-NEXT: pinsrw $4, %ecx, %xmm0
; SSE41-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3,4],xmm2[5],xmm0[6,7]
; SSE41-NEXT: pinsrw $6, %eax, %xmm0
; SSE41-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,5,6],xmm2[7]
; SSE41-NEXT: retq
;
; AVX-LABEL: shuffle_extract_concat_insert:
; AVX: # %bb.0:
; AVX-NEXT: vmovd %xmm1, %eax
; AVX-NEXT: vpextrw $2, %xmm1, %ecx
; AVX-NEXT: vpunpcklwd {{.*#+}} xmm0 = xmm0[0],xmm2[0],xmm0[1],xmm2[1],xmm0[2],xmm2[2],xmm0[3],xmm2[3]
; AVX-NEXT: vpshufb {{.*#+}} xmm0 = xmm0[8,9,2,3,0,1,14,15,8,9,14,15,12,13,14,15]
; AVX-NEXT: vpinsrw $4, %ecx, %xmm0, %xmm0
; AVX-NEXT: vpblendw {{.*#+}} xmm0 = xmm0[0,1,2,3,4],xmm2[5],xmm0[6,7]
; AVX-NEXT: vpinsrw $6, %eax, %xmm0, %xmm0
; AVX-NEXT: vpblendw {{.*#+}} xmm0 = xmm0[0,1,2,3,4,5,6],xmm2[7]
; AVX-NEXT: retq
%a = shufflevector <4 x i16> %lhsa, <4 x i16> %rhsa, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
%a0 = extractelement <8 x i16> %a, i32 0
%a4 = extractelement <8 x i16> %a, i32 4
%a6 = extractelement <8 x i16> %a, i32 6
%b11 = extractelement <8 x i16> %b, i32 3
%b13 = extractelement <8 x i16> %b, i32 5
%b15 = extractelement <8 x i16> %b, i32 7
%1 = shufflevector <8 x i16> %a, <8 x i16> %b, <8 x i32> <i32 2, i32 8, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%2 = insertelement <8 x i16> %1, i16 %a0, i32 2
%3 = insertelement <8 x i16> %2, i16 %b11, i32 3
%4 = insertelement <8 x i16> %3, i16 %a6, i32 4
%5 = insertelement <8 x i16> %4, i16 %b13, i32 5
%6 = insertelement <8 x i16> %5, i16 %a4, i32 6
%7 = insertelement <8 x i16> %6, i16 %b15, i32 7
ret <8 x i16> %7
}