39 lines
1.7 KiB
LLVM
39 lines
1.7 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=i686-- -mcpu=penryn | FileCheck %s
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; PR2647
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@0 = external dso_local global float, align 16 ; <float*>:0 [#uses=2]
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define internal void @a() nounwind {
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; CHECK-LABEL: a:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: rsqrtss %xmm0, %xmm0
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; CHECK-NEXT: movss %xmm0, __unnamed_1
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; CHECK-NEXT: retl
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load float, 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 @b() nounwind {
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; CHECK-LABEL: b:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
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; CHECK-NEXT: movsldup {{.*#+}} xmm0 = xmm0[0,0,2,2]
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; CHECK-NEXT: rsqrtss %xmm0, %xmm0
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; CHECK-NEXT: extractps $1, %xmm0, __unnamed_1
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; CHECK-NEXT: retl
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load float, 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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