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[X86][SSSE3] Add target shuffle constant folding tests

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llvm-svn: 281827
This commit is contained in:
Simon Pilgrim 2016-09-17 17:40:08 +00:00
parent 374b9a54f7
commit b44df8e06b
1 changed files with 16 additions and 0 deletions
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test/CodeGen/X86/vector-shuffle-combining-ssse3.ll
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@ -380,3 +380,19 @@ define <16 x i8> @combine_unpckl_arg1_pshufb(<16 x i8> %a0, <16 x i8> %a1) {
%2 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %1, <16 x i8> <i8 1, i8 -1, i8 -1, i8 -1, i8 1, i8 -1, i8 -1, i8 -1, i8 1, i8 -1, i8 -1, i8 -1, i8 1, i8 -1, i8 -1, i8 -1>)
ret <16 x i8> %2
}
define <16 x i8> @constant_fold_pshufb() {
; SSE-LABEL: constant_fold_pshufb:
; SSE: # BB#0:
; SSE-NEXT: movdqa {{.*#+}} xmm0 = [15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0]
; SSE-NEXT: pshufb {{.*#+}} xmm0 = xmm0[1],zero,zero,zero,xmm0[u,u],zero,zero,xmm0[15],zero,zero,zero,zero,zero,xmm0[7,6]
; SSE-NEXT: retq
;
; AVX-LABEL: constant_fold_pshufb:
; AVX: # BB#0:
; AVX-NEXT: vmovdqa {{.*#+}} xmm0 = [15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0]
; AVX-NEXT: vpshufb {{.*#+}} xmm0 = xmm0[1],zero,zero,zero,xmm0[u,u],zero,zero,xmm0[15],zero,zero,zero,zero,zero,xmm0[7,6]
; AVX-NEXT: retq
%1 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> <i8 15, i8 14, i8 13, i8 12, i8 11, i8 10, i8 9, i8 8, i8 7, i8 6, i8 5, i8 4, i8 3, i8 2, i8 1, i8 0>, <16 x i8> <i8 1, i8 -1, i8 -1, i8 -1, i8 undef, i8 undef, i8 -1, i8 -1, i8 15, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 7, i8 6>)
ret <16 x i8> %1
}