4beef4c90d
This used to resort to splitting the 256-bit operation into two 128-bit shuffles and then recombining the results. Fixes <rdar://problem/16167303> llvm-svn: 204735
23 lines
953 B
LLVM
23 lines
953 B
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=core-avx2 | FileCheck %s
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define void @shuffle_v16i16(<16 x i16>* %a) {
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; CHECK-LABEL: shuffle_v16i16:
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; CHECK: vpshufb {{.*}}%ymm
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; CHECK-NOT: vpshufb {{.*}}%xmm
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entry:
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%0 = load <16 x i16>* %a, align 32
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%shuffle = shufflevector <16 x i16> %0, <16 x i16> undef, <16 x i32> <i32 1, i32 1, i32 3, i32 3, i32 5, i32 5, i32 7, i32 7, i32 9, i32 9, i32 11, i32 11, i32 13, i32 13, i32 15, i32 15>
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store <16 x i16> %shuffle, <16 x i16>* %a, align 32
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ret void
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}
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define void @shuffle_v16i16_lanecrossing(<16 x i16>* %a) {
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; CHECK-LABEL: shuffle_v16i16_lanecrossing:
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; CHECK-NOT: vpshufb {{.*}}%ymm
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entry:
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%0 = load <16 x i16>* %a, align 32
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%shuffle = shufflevector <16 x i16> %0, <16 x i16> undef, <16 x i32> <i32 1, i32 1, i32 3, i32 3, i32 5, i32 13, i32 7, i32 7, i32 9, i32 9, i32 11, i32 11, i32 13, i32 13, i32 15, i32 15>
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store <16 x i16> %shuffle, <16 x i16>* %a, align 32
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ret void
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}
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