diff options
| 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 | 99cdf8893efc0e108329fa62524fad62f72140a1 (patch) | |
| tree | 6c2253f58da4d1acf1369a903ab0a298a195dc87 /llvm/test/CodeGen/X86/extractps.ll | |
| parent | d119c0bd24a4aa011f1db43fff0828271254d00a (diff) | |
| download | bcm5719-llvm-99cdf8893efc0e108329fa62524fad62f72140a1.tar.gz bcm5719-llvm-99cdf8893efc0e108329fa62524fad62f72140a1.zip | |
Use MOVSSmr instead of EXTRACTPSmr in the case of extracting
vector element 0 for a store, as it's smaller and faster.
llvm-svn: 58483
Diffstat (limited to 'llvm/test/CodeGen/X86/extractps.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/extractps.ll | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/llvm/test/CodeGen/X86/extractps.ll b/llvm/test/CodeGen/X86/extractps.ll index cc6d92c8d39..484d2c4e5e1 100644 --- a/llvm/test/CodeGen/X86/extractps.ll +++ b/llvm/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 |
