forked from OSchip/llvm-project
18 lines
832 B
LLVM
18 lines
832 B
LLVM
; RUN: llc -relocation-model=pic -march=x86-64 -mtriple=x86_64-unknown-unknown -mattr=+ssse3 < %s | FileCheck %s
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; Verify that the backend correctly folds the shuffle in function 'fold_pshufb'
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; into a simple load from constant pool.
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define <2 x i64> @fold_pshufb() {
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; CHECK-LABEL: fold_pshufb:
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; CHECK: # BB#0:
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; CHECK-NEXT: movaps {{.*#+}} xmm0 = [0,0,0,0,1,0,0,0,2,0,0,0,3,0,0,0]
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; CHECK-NEXT: retq
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entry:
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%0 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> <i8 0, i8 0, i8 0, i8 0, i8 1, i8 0, i8 0, i8 0, i8 2, i8 0, i8 0, i8 0, i8 3, i8 0, i8 0, i8 0>, <16 x i8> <i8 0, i8 1, i8 2, i8 3, i8 4, i8 5, i8 6, i8 7, i8 8, i8 9, i8 10, i8 11, i8 12, i8 13, i8 14, i8 15>)
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%1 = bitcast <16 x i8> %0 to <2 x i64>
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ret <2 x i64> %1
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}
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declare <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8>, <16 x i8>)
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