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bca214cf27
Chandler correctly pointed out that I need an LLVM IR test for r210282, which modified the vperm -> shuffle transform for little endian PowerPC. This patch provides that test. llvm-svn: 210297
18 lines
1008 B
LLVM
18 lines
1008 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32:64"
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target triple = "powerpc64le-unknown-linux-gnu"
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define <16 x i8> @foo() nounwind ssp {
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; CHECK: @foo
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;; Arguments are {0,1,...,15},{16,17,...,31},{30,28,26,...,0}
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%1 = call <4 x i32> @llvm.ppc.altivec.vperm(<4 x i32> <i32 50462976, i32 117835012, i32 185207048, i32 252579084>, <4 x i32> <i32 319951120, i32 387323156, i32 454695192, i32 522067228>, <16 x i8> <i8 30, i8 28, i8 26, i8 24, i8 22, i8 20, i8 18, i8 16, i8 14, i8 12, i8 10, i8 8, i8 6, i8 4, i8 2, i8 0>)
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%2 = bitcast <4 x i32> %1 to <16 x i8>
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ret <16 x i8> %2
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;; Revised arguments are {16,17,...31},{0,1,...,15},{1,3,5,...,31}
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;; optimized into the following:
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; CHECK: ret <16 x i8> <i8 17, i8 19, i8 21, i8 23, i8 25, i8 27, i8 29, i8 31, i8 1, i8 3, i8 5, i8 7, i8 9, i8 11, i8 13, i8 15>
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}
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declare <4 x i32> @llvm.ppc.altivec.vperm(<4 x i32>, <4 x i32>, <16 x i8>)
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