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[X86][SSE4A] Add tests showing missed opportunities to combine EXTRQI/INSERTQI shuffles

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llvm-svn: 307027
This commit is contained in:
Simon Pilgrim 2017-07-03 15:01:07 +00:00
parent ef2bf78d2f
commit f76cda29cb
1 changed files with 80 additions and 0 deletions
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test/CodeGen/X86/vector-shuffle-combining-sse4a.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+ssse3,+sse4a | FileCheck %s --check-prefix=ALL --check-prefix=SSE --check-prefix=SSE4A
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx,+sse4a| FileCheck %s --check-prefix=ALL --check-prefix=AVX --check-prefix=AVX1
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx2,+sse4a | FileCheck %s --check-prefix=ALL --check-prefix=AVX --check-prefix=AVX2
;
; Combine tests involving SSE41 target shuffles (BLEND,INSERTPS,MOVZX)
declare <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8>, <16 x i8>)
define <16 x i8> @combine_extrqi_pshufb_16i8(<16 x i8> %a0) {
; SSE-LABEL: combine_extrqi_pshufb_16i8:
; SSE: # BB#0:
; SSE-NEXT: extrq {{.*#+}} xmm0 = xmm0[1,2],zero,zero,zero,zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
; SSE-NEXT: pshufb {{.*#+}} xmm0 = xmm0[0,1,2,3,4],zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
; SSE-NEXT: retq
;
; AVX-LABEL: combine_extrqi_pshufb_16i8:
; AVX: # BB#0:
; AVX-NEXT: extrq {{.*#+}} xmm0 = xmm0[1,2],zero,zero,zero,zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
; AVX-NEXT: vpshufb {{.*#+}} xmm0 = xmm0[0,1,2,3,4],zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
; AVX-NEXT: retq
%1 = shufflevector <16 x i8> %a0, <16 x i8> zeroinitializer, <16 x i32> <i32 1, i32 2, i32 16, i32 16, i32 16, i32 16, i32 16, i32 16, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%2 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %1, <16 x i8> <i8 0, i8 1, i8 2, i8 3, i8 4, i8 255, i8 255, i8 255, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef>)
ret <16 x i8> %2
}
define <8 x i16> @combine_extrqi_pshufb_8i16(<8 x i16> %a0) {
; SSE-LABEL: combine_extrqi_pshufb_8i16:
; SSE: # BB#0:
; SSE-NEXT: extrq {{.*#+}} xmm0 = xmm0[2,3,4,5],zero,zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
; SSE-NEXT: pshufb {{.*#+}} xmm0 = xmm0[0,1],zero,zero,zero,zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
; SSE-NEXT: retq
;
; AVX-LABEL: combine_extrqi_pshufb_8i16:
; AVX: # BB#0:
; AVX-NEXT: extrq {{.*#+}} xmm0 = xmm0[2,3,4,5],zero,zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
; AVX-NEXT: vpmovzxwq {{.*#+}} xmm0 = xmm0[0],zero,zero,zero,xmm0[1],zero,zero,zero
; AVX-NEXT: retq
%1 = shufflevector <8 x i16> %a0, <8 x i16> zeroinitializer, <8 x i32> <i32 1, i32 2, i32 8, i32 8, i32 undef, i32 undef, i32 undef, i32 undef>
%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 255, i8 255, i8 255, i8 255, i8 255, i8 255, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef>)
%4 = bitcast <16 x i8> %3 to <8 x i16>
ret <8 x i16> %4
}
define <16 x i8> @combine_insertqi_pshufb_16i8(<16 x i8> %a0, <16 x i8> %a1) {
; SSE-LABEL: combine_insertqi_pshufb_16i8:
; SSE: # BB#0:
; SSE-NEXT: insertq {{.*#+}} xmm0 = xmm1[0,1,2],xmm0[3,4,5,6,7,u,u,u,u,u,u,u,u]
; SSE-NEXT: pshufb {{.*#+}} xmm0 = xmm0[0,1],zero,zero,zero,zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
; SSE-NEXT: retq
;
; AVX-LABEL: combine_insertqi_pshufb_16i8:
; AVX: # BB#0:
; AVX-NEXT: insertq {{.*#+}} xmm0 = xmm1[0,1,2],xmm0[3,4,5,6,7,u,u,u,u,u,u,u,u]
; AVX-NEXT: vpmovzxwq {{.*#+}} xmm0 = xmm0[0],zero,zero,zero,xmm0[1],zero,zero,zero
; AVX-NEXT: retq
%1 = shufflevector <16 x i8> %a0, <16 x i8> %a1, <16 x i32> <i32 16, i32 17, i32 18, i32 3, i32 4, i32 5, i32 6, i32 7, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef, i32 undef>
%2 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> %1, <16 x i8> <i8 0, i8 1, i8 255, i8 255, i8 255, i8 255, i8 255, i8 255, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef>)
ret <16 x i8> %2
}
define <8 x i16> @combine_insertqi_pshufb_8i16(<8 x i16> %a0, <8 x i16> %a1) {
; SSE-LABEL: combine_insertqi_pshufb_8i16:
; SSE: # BB#0:
; SSE-NEXT: insertq {{.*#+}} xmm0 = xmm1[0,1],xmm0[2,3,4,5,6,7,u,u,u,u,u,u,u,u]
; SSE-NEXT: pshufb {{.*#+}} xmm0 = xmm0[0,1],zero,zero,zero,zero,zero,zero,xmm0[u,u,u,u,u,u,u,u]
; SSE-NEXT: retq
;
; AVX-LABEL: combine_insertqi_pshufb_8i16:
; AVX: # BB#0:
; AVX-NEXT: insertq {{.*#+}} xmm0 = xmm1[0,1],xmm0[2,3,4,5,6,7,u,u,u,u,u,u,u,u]
; AVX-NEXT: vpmovzxwq {{.*#+}} xmm0 = xmm0[0],zero,zero,zero,xmm0[1],zero,zero,zero
; AVX-NEXT: retq
%1 = shufflevector <8 x i16> %a0, <8 x i16> %a1, <8 x i32> <i32 8, i32 1, i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef>
%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 255, i8 255, i8 255, i8 255, i8 255, i8 255, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef, i8 undef>)
%4 = bitcast <16 x i8> %3 to <8 x i16>
ret <8 x i16> %4
}