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| author | Dan Gohman <gohman@apple.com> | 2008-10-31 00:57:24 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-10-31 00:57:24 +0000 |
| commit | d17cfbe1cad81b5f420031f73f52411285ec831f (patch) | |
| tree | 863477e1d0ed77d420195a5afd7a9a69c173e825 /test/CodeGen/X86/extractps.ll | |
| parent | 8fe95356dd487a79145ec07a9f46cd743b4c9bdd (diff) | |
Use MOVSSmr instead of EXTRACTPSmr in the case of extracting
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
Diffstat (limited to 'test/CodeGen/X86/extractps.ll')
| -rw-r--r-- | test/CodeGen/X86/extractps.ll | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/test/CodeGen/X86/extractps.ll b/test/CodeGen/X86/extractps.ll index cc6d92c8d3..484d2c4e5e 100644 --- a/test/CodeGen/X86/extractps.ll +++ b/test/CodeGen/X86/extractps.ll @@ -1,7 +1,7 @@ ; RUN: llvm-as < %s | llc -march=x86 -mcpu=penryn > %t ; RUN: not grep movd %t -; RUN: not grep movss %t -; RUN: grep {extractps \\\$0, %xmm0, } %t +; RUN: grep {movss %xmm} %t | count 1 +; RUN: grep {extractps \\\$1, %xmm0, } %t | count 1 ; PR2647 external global float, align 16 ; <float*>:0 [#uses=2] @@ -14,6 +14,14 @@ define internal void @""() nounwind { store float %4, float* @0, align 16 ret void } +define internal void @""() nounwind { + load float* @0, align 16 ; <float>:1 [#uses=1] + insertelement <4 x float> undef, float %1, i32 1 ; <<4 x float>>:2 [#uses=1] + call <4 x float> @llvm.x86.sse.rsqrt.ss( <4 x float> %2 ) ; <<4 x float>>:3 [#uses=1] + extractelement <4 x float> %3, i32 1 ; <float>:4 [#uses=1] + store float %4, float* @0, align 16 + ret void +} declare <4 x float> @llvm.x86.sse.rsqrt.ss(<4 x float>) nounwind readnone |