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[X86][SSE] Added tests showing missed combines of shifts with shuffles. 

llvm-svn: 288037
This commit is contained in:
Simon Pilgrim 2016-11-28 15:50:39 +00:00
parent 59168e28e0
commit 3def9e11e2
2 changed files with 108 additions and 0 deletions
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54
llvm/test/CodeGen/X86/vector-shuffle-combining-avx2.ll
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@ -596,6 +596,60 @@ define <32 x i8> @combine_pshufb_not_as_pshufw(<32 x i8> %a0) {
ret <32 x i8> %res1
}
define <32 x i8> @combine_psrlw_pshufb(<16 x i16> %a0) {
; X32-LABEL: combine_psrlw_pshufb:
; X32: # BB#0:
; X32-NEXT: vpsrlw $8, %ymm0, %ymm0
; X32-NEXT: vpshufb {{.*#+}} ymm0 = ymm0[1,0,3,2,5,4,7,6,9,8,11,10,13,12,15,14,17,16,19,18,21,20,23,22,25,24,27,26,29,28,31,30]
; X32-NEXT: retl
;
; X64-LABEL: combine_psrlw_pshufb:
; X64: # BB#0:
; X64-NEXT: vpsrlw $8, %ymm0, %ymm0
; X64-NEXT: vpshufb {{.*#+}} ymm0 = ymm0[1,0,3,2,5,4,7,6,9,8,11,10,13,12,15,14,17,16,19,18,21,20,23,22,25,24,27,26,29,28,31,30]
; X64-NEXT: retq
%1 = lshr <16 x i16> %a0, <i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8>
%2 = bitcast <16 x i16> %1 to <32 x i8>
%3 = tail call <32 x i8> @llvm.x86.avx2.pshuf.b(<32 x i8> %2, <32 x i8> <i8 1, i8 0, i8 3, i8 2, i8 5, i8 4, i8 7, i8 6, i8 9, i8 8, i8 11, i8 10, i8 13, i8 12, i8 15, i8 14, i8 17, i8 16, i8 19, i8 18, i8 21, i8 20, i8 23, i8 22, i8 25, i8 24, i8 27, i8 26, i8 29, i8 28, i8 31, i8 30>)
ret <32 x i8> %3
}
define <32 x i8> @combine_pslld_pshufb(<8 x i32> %a0) {
; X32-LABEL: combine_pslld_pshufb:
; X32: # BB#0:
; X32-NEXT: vpslld $24, %ymm0, %ymm0
; X32-NEXT: vpshufb {{.*#+}} ymm0 = ymm0[3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12,19,18,17,16,23,22,21,20,27,26,25,24,31,30,29,28]
; X32-NEXT: retl
;
; X64-LABEL: combine_pslld_pshufb:
; X64: # BB#0:
; X64-NEXT: vpslld $24, %ymm0, %ymm0
; X64-NEXT: vpshufb {{.*#+}} ymm0 = ymm0[3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12,19,18,17,16,23,22,21,20,27,26,25,24,31,30,29,28]
; X64-NEXT: retq
%1 = shl <8 x i32> %a0, <i32 24, i32 24, i32 24, i32 24, i32 24, i32 24, i32 24, i32 24>
%2 = bitcast <8 x i32> %1 to <32 x i8>
%3 = tail call <32 x i8> @llvm.x86.avx2.pshuf.b(<32 x i8> %2, <32 x i8> <i8 3, i8 2, i8 1, i8 0, i8 7, i8 6, i8 5, i8 4, i8 11, i8 10, i8 9, i8 8, i8 15, i8 14, i8 13, i8 12, i8 19, i8 18, i8 17, i8 16, i8 23, i8 22, i8 21, i8 20, i8 27, i8 26, i8 25, i8 24, i8 31, i8 30, i8 29, i8 28>)
ret <32 x i8> %3
}
define <32 x i8> @combine_psrlq_pshufb(<4 x i64> %a0) {
; X32-LABEL: combine_psrlq_pshufb:
; X32: # BB#0:
; X32-NEXT: vpsrlq $32, %ymm0, %ymm0
; X32-NEXT: vpshufb {{.*#+}} ymm0 = ymm0[7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8,23,22,21,20,19,18,17,31,30,29,28,27,26,25,24,23]
; X32-NEXT: retl
;
; X64-LABEL: combine_psrlq_pshufb:
; X64: # BB#0:
; X64-NEXT: vpsrlq $32, %ymm0, %ymm0
; X64-NEXT: vpshufb {{.*#+}} ymm0 = ymm0[7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8,23,22,21,20,19,18,17,31,30,29,28,27,26,25,24,23]
; X64-NEXT: retq
%1 = lshr <4 x i64> %a0, <i64 32, i64 32, i64 32, i64 32>
%2 = bitcast <4 x i64> %1 to <32 x i8>
%3 = tail call <32 x i8> @llvm.x86.avx2.pshuf.b(<32 x i8> %2, <32 x i8> <i8 7, i8 6, i8 5, i8 4, i8 3, i8 2, i8 1, i8 0, i8 15, i8 14, i8 13, i8 12, i8 11, i8 10, i8 9, i8 8, i8 23, i8 22, i8 21, i8 20, i8 19, i8 18, i8 17, i8 31, i8 30, i8 29, i8 28, i8 27, i8 26, i8 25, i8 24, i8 23>)
ret <32 x i8> %3
}
define <8 x i32> @constant_fold_permd() {
; X32-LABEL: constant_fold_permd:
; X32: # BB#0:

54
llvm/test/CodeGen/X86/vector-shuffle-combining-ssse3.ll
View File

@ -409,6 +409,60 @@ define <16 x i8> @combine_pshufb_as_unary_unpckhwd(<16 x i8> %a0) {
ret <16 x i8> %1
}
define <16 x i8> @combine_psrlw_pshufb(<8 x i16> %a0) {
; SSE-LABEL: combine_psrlw_pshufb:
; SSE: # BB#0:
; SSE-NEXT: psrlw $8, %xmm0
; SSE-NEXT: pshufb {{.*#+}} xmm0 = xmm0[0],zero,zero,zero,xmm0[0],zero,zero,zero,xmm0[0],zero,zero,zero,xmm0[0],zero,zero,zero
; SSE-NEXT: retq
;
; AVX-LABEL: combine_psrlw_pshufb:
; AVX: # BB#0:
; AVX-NEXT: vpsrlw $8, %xmm0, %xmm0
; AVX-NEXT: vpshufb {{.*#+}} xmm0 = xmm0[0],zero,zero,zero,xmm0[0],zero,zero,zero,xmm0[0],zero,zero,zero,xmm0[0],zero,zero,zero
; AVX-NEXT: retq
%1 = lshr <8 x i16> %a0, <i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8, i16 8>
%2 = bitcast <8 x i16> %1 to <16 x i8>
%3 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %2, <16 x i8> <i8 0, i8 -1, i8 -1, i8 -1, i8 0, i8 -1, i8 -1, i8 -1, i8 0, i8 -1, i8 -1, i8 -1, i8 0, i8 -1, i8 -1, i8 -1>)
ret <16 x i8> %3
}
define <16 x i8> @combine_pslld_pshufb(<4 x i32> %a0) {
; SSE-LABEL: combine_pslld_pshufb:
; SSE: # BB#0:
; SSE-NEXT: pslld $8, %xmm0
; SSE-NEXT: pshufb {{.*#+}} xmm0 = xmm0[3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12]
; SSE-NEXT: retq
;
; AVX-LABEL: combine_pslld_pshufb:
; AVX: # BB#0:
; AVX-NEXT: vpslld $8, %xmm0, %xmm0
; AVX-NEXT: vpshufb {{.*#+}} xmm0 = xmm0[3,2,1,0,7,6,5,4,11,10,9,8,15,14,13,12]
; AVX-NEXT: retq
%1 = shl <4 x i32> %a0, <i32 8, i32 8, i32 8, i32 8>
%2 = bitcast <4 x i32> %1 to <16 x i8>
%3 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %2, <16 x i8> <i8 3, i8 2, i8 1, i8 0, i8 7, i8 6, i8 5, i8 4, i8 11, i8 10, i8 9, i8 8, i8 15, i8 14, i8 13, i8 12>)
ret <16 x i8> %3
}
define <16 x i8> @combine_psrlq_pshufb(<2 x i64> %a0) {
; SSE-LABEL: combine_psrlq_pshufb:
; SSE: # BB#0:
; SSE-NEXT: psrlq $48, %xmm0
; SSE-NEXT: pshufb {{.*#+}} xmm0 = xmm0[7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8]
; SSE-NEXT: retq
;
; AVX-LABEL: combine_psrlq_pshufb:
; AVX: # BB#0:
; AVX-NEXT: vpsrlq $48, %xmm0, %xmm0
; AVX-NEXT: vpshufb {{.*#+}} xmm0 = xmm0[7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8]
; AVX-NEXT: retq
%1 = lshr <2 x i64> %a0, <i64 48, i64 48>
%2 = bitcast <2 x i64> %1 to <16 x i8>
%3 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %2, <16 x i8> <i8 7, i8 6, i8 5, i8 4, i8 3, i8 2, i8 1, i8 0, i8 15, i8 14, i8 13, i8 12, i8 11, i8 10, i8 9, i8 8>)
ret <16 x i8> %3
}
define <16 x i8> @combine_unpckl_arg0_pshufb(<16 x i8> %a0, <16 x i8> %a1) {
; SSE-LABEL: combine_unpckl_arg0_pshufb:
; SSE: # BB#0: