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authorEvan Cheng <evan.cheng@apple.com>2008-09-25 20:50:48 +0000
committerEvan Cheng <evan.cheng@apple.com>2008-09-25 20:50:48 +0000
commit0b457f0c3a7e21b1fb9ac8b9f8e404e1312b6a60 (patch)
tree2ba33e7e3f6ad009c22409a680fc91cb58deb29b /test/CodeGen/X86
parentc9c6da61ac027d9818652d417907f84398288b99 (diff)
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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.ll16
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
+}