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| author | Evan Cheng <evan.cheng@apple.com> | 2008-09-25 20:50:48 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-09-25 20:50:48 +0000 |
| commit | 0b457f0c3a7e21b1fb9ac8b9f8e404e1312b6a60 (patch) | |
| tree | 2ba33e7e3f6ad009c22409a680fc91cb58deb29b /test/CodeGen/X86 | |
| parent | c9c6da61ac027d9818652d417907f84398288b99 (diff) | |
| download | external_llvm-0b457f0c3a7e21b1fb9ac8b9f8e404e1312b6a60.zip external_llvm-0b457f0c3a7e21b1fb9ac8b9f8e404e1312b6a60.tar.gz external_llvm-0b457f0c3a7e21b1fb9ac8b9f8e404e1312b6a60.tar.bz2 | |
With sse3 and when the source is a load or has multiple uses, favors movddup over shuffp*, pshufd, etc. Without sse3 or when the source is from a register, make use of movlhps
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56620 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86')
| -rw-r--r-- | test/CodeGen/X86/vec_shuffle-22.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/CodeGen/X86/vec_shuffle-22.ll b/test/CodeGen/X86/vec_shuffle-22.ll new file mode 100644 index 0000000..5648356 --- /dev/null +++ b/test/CodeGen/X86/vec_shuffle-22.ll @@ -0,0 +1,16 @@ +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | not grep shuf +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2,-sse3 | grep movlhps | count 2 +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse3 | grep movddup | count 1 + +define <4 x float> @t1(<4 x float> %a) nounwind { +entry: + %tmp1 = shufflevector <4 x float> %a, <4 x float> undef, <4 x i32> < i32 0, i32 1, i32 0, i32 1 > ; <<4 x float>> [#uses=1] + ret <4 x float> %tmp1 +} + +define <4 x i32> @t2(<4 x i32>* %a) nounwind { +entry: + %tmp1 = load <4 x i32>* %a; + %tmp2 = shufflevector <4 x i32> %tmp1, <4 x i32> undef, <4 x i32> < i32 0, i32 1, i32 0, i32 1 > ; <<4 x i32>> [#uses=1] + ret <4 x i32> %tmp2 +} |