derek.holloway
7502bf64a4
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96 lines
3.7 KiB
LLVM
96 lines
3.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
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; RUN: llc < %s -mtriple=aarch64 | FileCheck %s --check-prefix=CHECKLE
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; RUN: llc < %s -mtriple=aarch64_be | FileCheck %s --check-prefix=CHECKBE
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define <4 x i16> @test_reconstructshuffle(<16 x i8> %a, <16 x i8> %b) nounwind {
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; CHECKLE-LABEL: test_reconstructshuffle:
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; CHECKLE: // %bb.0:
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; CHECKLE-NEXT: mov b2, v0.b[3]
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; CHECKLE-NEXT: mov d1, v1.d[1]
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; CHECKLE-NEXT: mov v2.b[2], v0.b[2]
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; CHECKLE-NEXT: mov v2.b[4], v0.b[1]
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; CHECKLE-NEXT: mov v2.b[6], v0.b[0]
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; CHECKLE-NEXT: zip2 v0.8b, v1.8b, v0.8b
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; CHECKLE-NEXT: add v0.4h, v2.4h, v0.4h
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; CHECKLE-NEXT: bic v0.4h, #255, lsl #8
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; CHECKLE-NEXT: ret
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;
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; CHECKBE-LABEL: test_reconstructshuffle:
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; CHECKBE: // %bb.0:
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; CHECKBE-NEXT: rev64 v0.16b, v0.16b
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; CHECKBE-NEXT: rev64 v1.16b, v1.16b
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; CHECKBE-NEXT: ext v0.16b, v0.16b, v0.16b, #8
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; CHECKBE-NEXT: ext v1.16b, v1.16b, v1.16b, #8
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; CHECKBE-NEXT: mov b2, v0.b[3]
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; CHECKBE-NEXT: mov d1, v1.d[1]
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; CHECKBE-NEXT: mov v2.b[2], v0.b[2]
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; CHECKBE-NEXT: mov v2.b[4], v0.b[1]
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; CHECKBE-NEXT: mov v2.b[6], v0.b[0]
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; CHECKBE-NEXT: zip2 v0.8b, v1.8b, v0.8b
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; CHECKBE-NEXT: add v0.4h, v2.4h, v0.4h
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; CHECKBE-NEXT: bic v0.4h, #255, lsl #8
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; CHECKBE-NEXT: rev64 v0.4h, v0.4h
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; CHECKBE-NEXT: ret
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%tmp1 = shufflevector <16 x i8> %a, <16 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0>
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%tmp2 = shufflevector <16 x i8> %b, <16 x i8> poison, <4 x i32> <i32 12, i32 13, i32 14, i32 15>
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%tmp3 = add <4 x i8> %tmp1, %tmp2
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%tmp4 = zext <4 x i8> %tmp3 to <4 x i16>
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ret <4 x i16> %tmp4
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}
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; a shufflevector of even elements can become just xtn on little-endian, but not on big-endian.
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define <8 x i8> @xtn_shuffle_even_v16i8(<16 x i8> %a) {
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; CHECKLE-LABEL: xtn_shuffle_even_v16i8:
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; CHECKLE: // %bb.0:
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; CHECKLE-NEXT: xtn v0.8b, v0.8h
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; CHECKLE-NEXT: ret
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;
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; CHECKBE-LABEL: xtn_shuffle_even_v16i8:
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; CHECKBE: // %bb.0:
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; CHECKBE-NEXT: rev64 v0.16b, v0.16b
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; CHECKBE-NEXT: ext v0.16b, v0.16b, v0.16b, #8
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; CHECKBE-NEXT: uzp1 v0.16b, v0.16b, v0.16b
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; CHECKBE-NEXT: rev64 v0.8b, v0.8b
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; CHECKBE-NEXT: ret
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%r = shufflevector <16 x i8> %a, <16 x i8> poison, <8 x i32> <i32 0, i32 2, i32 4, i32 6, i32 8, i32 10, i32 12, i32 14>
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ret <8 x i8> %r
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}
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; a shufflevector of even elements can become just xtn on little-endian, but not on big-endian.
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define <4 x i16> @xtn_shuffle_even_v8i16(<8 x i16> %a) {
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; CHECKLE-LABEL: xtn_shuffle_even_v8i16:
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; CHECKLE: // %bb.0:
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; CHECKLE-NEXT: xtn v0.4h, v0.4s
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; CHECKLE-NEXT: ret
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;
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; CHECKBE-LABEL: xtn_shuffle_even_v8i16:
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; CHECKBE: // %bb.0:
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; CHECKBE-NEXT: rev64 v0.8h, v0.8h
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; CHECKBE-NEXT: ext v0.16b, v0.16b, v0.16b, #8
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; CHECKBE-NEXT: uzp1 v0.8h, v0.8h, v0.8h
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; CHECKBE-NEXT: rev64 v0.4h, v0.4h
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; CHECKBE-NEXT: ret
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%r = shufflevector <8 x i16> %a, <8 x i16> poison, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
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ret <4 x i16> %r
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}
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; a shufflevector of even elements can become just xtn on little-endian, but not on big-endian.
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define <4 x i32> @xtn_shuffle_uzp1_poison_v4i32(<4 x i32> %a) {
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; CHECKLE-LABEL: xtn_shuffle_uzp1_poison_v4i32:
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; CHECKLE: // %bb.0:
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; CHECKLE-NEXT: xtn v0.2s, v0.2d
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; CHECKLE-NEXT: ret
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;
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; CHECKBE-LABEL: xtn_shuffle_uzp1_poison_v4i32:
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; CHECKBE: // %bb.0:
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; CHECKBE-NEXT: rev64 v0.4s, v0.4s
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; CHECKBE-NEXT: ext v0.16b, v0.16b, v0.16b, #8
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; CHECKBE-NEXT: uzp1 v0.4s, v0.4s, v0.4s
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; CHECKBE-NEXT: rev64 v0.4s, v0.4s
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; CHECKBE-NEXT: ext v0.16b, v0.16b, v0.16b, #8
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; CHECKBE-NEXT: ret
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%r = shufflevector <4 x i32> %a, <4 x i32> poison, <4 x i32> <i32 0, i32 2, i32 poison, i32 poison>
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ret <4 x i32> %r
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}
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