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d17cfbe1ca
vector element 0 for a store, as it's smaller and faster. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58483 91177308-0d34-0410-b5e6-96231b3b80d8
28 lines
1.2 KiB
LLVM
28 lines
1.2 KiB
LLVM
; RUN: llvm-as < %s | llc -march=x86 -mcpu=penryn > %t
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; RUN: not grep movd %t
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; RUN: grep {movss %xmm} %t | count 1
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; RUN: grep {extractps \\\$1, %xmm0, } %t | count 1
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; PR2647
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external global float, align 16 ; <float*>:0 [#uses=2]
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define internal void @""() nounwind {
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load float* @0, align 16 ; <float>:1 [#uses=1]
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insertelement <4 x float> undef, float %1, i32 0 ; <<4 x float>>:2 [#uses=1]
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call <4 x float> @llvm.x86.sse.rsqrt.ss( <4 x float> %2 ) ; <<4 x float>>:3 [#uses=1]
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extractelement <4 x float> %3, i32 0 ; <float>:4 [#uses=1]
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store float %4, float* @0, align 16
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ret void
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}
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define internal void @""() nounwind {
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load float* @0, align 16 ; <float>:1 [#uses=1]
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insertelement <4 x float> undef, float %1, i32 1 ; <<4 x float>>:2 [#uses=1]
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call <4 x float> @llvm.x86.sse.rsqrt.ss( <4 x float> %2 ) ; <<4 x float>>:3 [#uses=1]
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extractelement <4 x float> %3, i32 1 ; <float>:4 [#uses=1]
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store float %4, float* @0, align 16
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ret void
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}
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declare <4 x float> @llvm.x86.sse.rsqrt.ss(<4 x float>) nounwind readnone
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