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9bdd9cede2
This patch corresponds to review: http://reviews.llvm.org/D21358 Vector shifts that have the same semantics as a vector swap are cannonicalized as such to provide additional opportunities for swap removal optimization to remove unnecessary swaps. llvm-svn: 275168
28 lines
1005 B
LLVM
28 lines
1005 B
LLVM
; RUN: llc -mcpu=pwr8 -mtriple=powerpc64le-unknown-linux-gnu \
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; RUN: -verify-machineinstrs < %s | FileCheck %s
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; RUN: llc -mcpu=pwr8 -mtriple=powerpc64-unknown-linux-gnu \
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; RUN: -verify-machineinstrs < %s | FileCheck %s
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define <4 x i32> @test1(<4 x i32> %a) {
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entry:
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; CHECK-LABEL: test1
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; CHECK: xxswapd 34, 34
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%vecins6 = shufflevector <4 x i32> %a, <4 x i32> undef, <4 x i32> <i32 2, i32 3, i32 0, i32 1>
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ret <4 x i32> %vecins6
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}
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define <8 x i16> @test2(<8 x i16> %a) #0 {
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entry:
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; CHECK-LABEL: test2
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; CHECK: xxswapd 34, 34
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%vecins14 = shufflevector <8 x i16> %a, <8 x i16> undef, <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 i16> %vecins14
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}
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define <16 x i8> @test3(<16 x i8> %a) #0 {
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entry:
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; CHECK-LABEL: test3
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; CHECK: xxswapd 34, 34
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%vecins30 = shufflevector <16 x i8> %a, <16 x i8> undef, <16 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
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ret <16 x i8> %vecins30
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}
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