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560bddce20
that are unused. This allows the combiner to delete math feeding shuffles where the math isn't actually necessary. This improves some of the vperm2x128 tests that regressed when the vector shuffle lowering started actually generating vperm instructions rather than forcibly decomposing them. Sadly, this isn't enough to get this *really* right because we still form a completely unnecessary permutation. To fix that, we also need to fold shuffles which just rearrange concatenated or inserted subvectors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219086 91177308-0d34-0410-b5e6-96231b3b80d8
195 lines
8.1 KiB
LLVM
195 lines
8.1 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx -mattr=+avx | FileCheck %s --check-prefix=ALL --check-prefix=AVX1
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=core-avx2 -mattr=+avx2 | FileCheck %s --check-prefix=ALL --check-prefix=AVX2
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define <8 x float> @A(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
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; ALL-LABEL: A:
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; ALL: ## BB#0: ## %entry
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; ALL-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm0[2,3,0,1]
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; ALL-NEXT: retq
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entry:
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%shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 0, i32 1, i32 2, i32 3>
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ret <8 x float> %shuffle
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}
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define <8 x float> @B(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
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; ALL-LABEL: B:
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; ALL: ## BB#0: ## %entry
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; ALL-NEXT: vblendpd {{.*#+}} ymm0 = ymm0[0,1],ymm1[2,3]
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; ALL-NEXT: retq
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entry:
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%shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 12, i32 13, i32 14, i32 15>
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ret <8 x float> %shuffle
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}
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define <8 x float> @C(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
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; ALL-LABEL: C:
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; ALL: ## BB#0: ## %entry
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; ALL-NEXT: vinsertf128 $1, %xmm0, %ymm0, %ymm0
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; ALL-NEXT: retq
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entry:
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%shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
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ret <8 x float> %shuffle
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}
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define <8 x float> @D(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
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; ALL-LABEL: D:
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; ALL: ## BB#0: ## %entry
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; ALL-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm0[2,3,2,3]
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; ALL-NEXT: retq
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entry:
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%shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 4, i32 5, i32 6, i32 7>
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ret <8 x float> %shuffle
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}
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define <32 x i8> @E(<32 x i8> %a, <32 x i8> %b) nounwind uwtable readnone ssp {
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; ALL-LABEL: E:
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; ALL: ## BB#0: ## %entry
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; ALL-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm0[2,3,2,3]
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; ALL-NEXT: retq
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entry:
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%shuffle = shufflevector <32 x i8> %a, <32 x i8> %b, <32 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>
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ret <32 x i8> %shuffle
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}
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define <4 x i64> @E2(<4 x i64> %a, <4 x i64> %b) nounwind uwtable readnone ssp {
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; ALL-LABEL: E2:
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; ALL: ## BB#0: ## %entry
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; ALL-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm1[2,3],ymm0[0,1]
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; ALL-NEXT: retq
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entry:
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%shuffle = shufflevector <4 x i64> %a, <4 x i64> %b, <4 x i32> <i32 6, i32 7, i32 0, i32 1>
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ret <4 x i64> %shuffle
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}
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define <32 x i8> @Ei(<32 x i8> %a, <32 x i8> %b) nounwind uwtable readnone ssp {
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; AVX1-LABEL: Ei:
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; AVX1: ## BB#0: ## %entry
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; AVX1-NEXT: vextractf128 $1, %ymm0, %xmm0
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; AVX1-NEXT: vpaddb {{.*}}(%rip), %xmm0, %xmm0
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; AVX1-NEXT: vinsertf128 $1, %xmm0, %ymm0, %ymm0
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; AVX1-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm0[2,3,2,3]
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; AVX1-NEXT: retq
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;
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; AVX2-LABEL: Ei:
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; AVX2: ## BB#0: ## %entry
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; AVX2-NEXT: vpaddb {{.*}}(%rip), %ymm0, %ymm0
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; AVX2-NEXT: vperm2i128 {{.*#+}} ymm0 = ymm0[2,3,2,3]
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; AVX2-NEXT: retq
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entry:
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; add forces execution domain
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%a2 = add <32 x i8> %a, <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, 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>
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%shuffle = shufflevector <32 x i8> %a2, <32 x i8> %b, <32 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31>
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ret <32 x i8> %shuffle
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}
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define <4 x i64> @E2i(<4 x i64> %a, <4 x i64> %b) nounwind uwtable readnone ssp {
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; AVX1-LABEL: E2i:
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; AVX1: ## BB#0: ## %entry
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; AVX1-NEXT: vpaddq {{.*}}(%rip), %xmm0, %xmm0
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; AVX1-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm1[2,3],ymm0[0,1]
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; AVX1-NEXT: retq
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;
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; AVX2-LABEL: E2i:
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; AVX2: ## BB#0: ## %entry
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; AVX2-NEXT: vpbroadcastq {{.*}}(%rip), %ymm2
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; AVX2-NEXT: vpaddq %ymm2, %ymm0, %ymm0
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; AVX2-NEXT: vperm2i128 {{.*#+}} ymm0 = ymm1[2,3],ymm0[0,1]
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; AVX2-NEXT: retq
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entry:
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; add forces execution domain
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%a2 = add <4 x i64> %a, <i64 1, i64 1, i64 1, i64 1>
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%shuffle = shufflevector <4 x i64> %a2, <4 x i64> %b, <4 x i32> <i32 6, i32 7, i32 0, i32 1>
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ret <4 x i64> %shuffle
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}
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define <8 x i32> @E3i(<8 x i32> %a, <8 x i32> %b) nounwind uwtable readnone ssp {
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; AVX1-LABEL: E3i:
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; AVX1: ## BB#0: ## %entry
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; AVX1-NEXT: vextractf128 $1, %ymm0, %xmm0
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; AVX1-NEXT: vpaddd {{.*}}(%rip), %xmm0, %xmm0
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; AVX1-NEXT: vinsertf128 $1, %xmm0, %ymm0, %ymm0
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; AVX1-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm0[2,3],ymm1[2,3]
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; AVX1-NEXT: retq
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;
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; AVX2-LABEL: E3i:
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; AVX2: ## BB#0: ## %entry
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; AVX2-NEXT: vpbroadcastd {{.*}}(%rip), %ymm2
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; AVX2-NEXT: vpaddd %ymm2, %ymm0, %ymm0
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; AVX2-NEXT: vperm2i128 {{.*#+}} ymm0 = ymm0[2,3],ymm1[2,3]
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; AVX2-NEXT: retq
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entry:
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; add forces execution domain
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%a2 = add <8 x i32> %a, <i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1>
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%shuffle = shufflevector <8 x i32> %a2, <8 x i32> %b, <8 x i32> <i32 undef, i32 5, i32 undef, i32 7, i32 12, i32 13, i32 14, i32 15>
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ret <8 x i32> %shuffle
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}
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define <16 x i16> @E4i(<16 x i16> %a, <16 x i16> %b) nounwind uwtable readnone ssp {
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; AVX1-LABEL: E4i:
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; AVX1: ## BB#0: ## %entry
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; AVX1-NEXT: vpaddw {{.*}}(%rip), %xmm0, %xmm0
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; AVX1-NEXT: vinsertf128 $1, %xmm0, %ymm1, %ymm0
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; AVX1-NEXT: retq
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;
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; AVX2-LABEL: E4i:
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; AVX2: ## BB#0: ## %entry
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; AVX2-NEXT: vpaddw {{.*}}(%rip), %ymm0, %ymm0
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; AVX2-NEXT: vinserti128 $1, %xmm0, %ymm1, %ymm0
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; AVX2-NEXT: retq
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entry:
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; add forces execution domain
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%a2 = add <16 x i16> %a, <i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1>
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%shuffle = shufflevector <16 x i16> %a2, <16 x i16> %b, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
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ret <16 x i16> %shuffle
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}
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define <16 x i16> @E5i(<16 x i16>* %a, <16 x i16>* %b) nounwind uwtable readnone ssp {
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; AVX1-LABEL: E5i:
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; AVX1: ## BB#0: ## %entry
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; AVX1-NEXT: vmovdqa (%rdi), %ymm0
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; AVX1-NEXT: vpaddw {{.*}}(%rip), %xmm0, %xmm0
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; AVX1-NEXT: vmovaps (%rsi), %ymm1
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; AVX1-NEXT: vinsertf128 $1, %xmm0, %ymm1, %ymm0
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; AVX1-NEXT: retq
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;
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; AVX2-LABEL: E5i:
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; AVX2: ## BB#0: ## %entry
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; AVX2-NEXT: vmovdqa (%rdi), %ymm0
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; AVX2-NEXT: vmovdqa (%rsi), %ymm1
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; AVX2-NEXT: vpaddw {{.*}}(%rip), %ymm0, %ymm0
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; AVX2-NEXT: vinserti128 $1, %xmm0, %ymm1, %ymm0
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; AVX2-NEXT: retq
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entry:
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%c = load <16 x i16>* %a
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%d = load <16 x i16>* %b
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%c2 = add <16 x i16> %c, <i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1, i16 1>
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%shuffle = shufflevector <16 x i16> %c2, <16 x i16> %d, <16 x i32> <i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
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ret <16 x i16> %shuffle
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}
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;;;; Cases with undef indicies mixed in the mask
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define <8 x float> @F(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
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; ALL-LABEL: F:
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; ALL: ## BB#0: ## %entry
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; ALL-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm1[0,1,0,1]
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; ALL-NEXT: retq
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entry:
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%shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 undef, i32 undef, i32 6, i32 7, i32 undef, i32 9, i32 undef, i32 11>
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ret <8 x float> %shuffle
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}
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;;;; Cases we must not select vperm2f128
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define <8 x float> @G(<8 x float> %a, <8 x float> %b) nounwind uwtable readnone ssp {
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; ALL-LABEL: G:
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; ALL: ## BB#0: ## %entry
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; ALL-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm0[0,1,0,1]
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; ALL-NEXT: vpermilps {{.*#+}} ymm1 = ymm1[0,0,2,3,4,4,6,7]
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; ALL-NEXT: vblendpd {{.*#+}} ymm0 = ymm1[0],ymm0[1],ymm1[2,3]
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; ALL-NEXT: retq
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entry:
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%shuffle = shufflevector <8 x float> %a, <8 x float> %b, <8 x i32> <i32 undef, i32 undef, i32 6, i32 7, i32 undef, i32 12, i32 undef, i32 15>
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ret <8 x float> %shuffle
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}
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