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[X86][AVX] Add test for another 'reverse HADD' pattern mentioned in PR41813

This commit is contained in:
Simon Pilgrim 2021-01-13 15:13:56 +00:00
parent cbbfc82586
commit efb6e45d2b
1 changed files with 32 additions and 0 deletions
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32
llvm/test/CodeGen/X86/haddsub-4.ll
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@ -120,6 +120,38 @@ define <8 x float> @hadd_reverse2_v8f32(<8 x float> %a0, <8 x float> %a1) {
ret <8 x float> %add
}
define <8 x float> @hadd_reverse3_v8f32(<8 x float> %a0, <8 x float> %a1) {
; SSE-LABEL: hadd_reverse3_v8f32:
; SSE: # %bb.0:
; SSE-NEXT: movaps %xmm0, %xmm4
; SSE-NEXT: haddps %xmm2, %xmm4
; SSE-NEXT: haddps %xmm3, %xmm1
; SSE-NEXT: shufps {{.*#+}} xmm1 = xmm1[3,2,1,0]
; SSE-NEXT: shufps {{.*#+}} xmm4 = xmm4[3,2,1,0]
; SSE-NEXT: movaps %xmm1, %xmm0
; SSE-NEXT: movaps %xmm4, %xmm1
; SSE-NEXT: retq
;
; AVX1-LABEL: hadd_reverse3_v8f32:
; AVX1: # %bb.0:
; AVX1-NEXT: vhaddps %ymm1, %ymm0, %ymm0
; AVX1-NEXT: vpermilps {{.*#+}} ymm0 = ymm0[3,2,1,0,7,6,5,4]
; AVX1-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm0[2,3,0,1]
; AVX1-NEXT: retq
;
; AVX2-LABEL: hadd_reverse3_v8f32:
; AVX2: # %bb.0:
; AVX2-NEXT: vhaddps %ymm1, %ymm0, %ymm0
; AVX2-NEXT: vpermilps {{.*#+}} ymm0 = ymm0[3,2,1,0,7,6,5,4]
; AVX2-NEXT: vpermpd {{.*#+}} ymm0 = ymm0[2,3,0,1]
; AVX2-NEXT: retq
%shuf0 = shufflevector <8 x float> %a0, <8 x float> %a1, <8 x i32> <i32 0, i32 2, i32 8, i32 10, i32 4, i32 6, i32 12, i32 14>
%shuf1 = shufflevector <8 x float> %a0, <8 x float> %a1, <8 x i32> <i32 1, i32 3, i32 9, i32 11, i32 5, i32 7, i32 13, i32 15>
%add = fadd <8 x float> %shuf0, %shuf1
%shuf2 = shufflevector <8 x float> %add, <8 x float> poison, <8 x i32> <i32 7, i32 6, i32 5, i32 4, i32 3, i32 2, i32 1, i32 0>
ret <8 x float> %shuf2
}
define <16 x i16> @hadd_reverse_v16i16(<16 x i16> %a0, <16 x i16> %a1) nounwind {
; SSE-LABEL: hadd_reverse_v16i16:
; SSE: # %bb.0: