From 0b457f0c3a7e21b1fb9ac8b9f8e404e1312b6a60 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Thu, 25 Sep 2008 20:50:48 +0000 Subject: 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 --- test/CodeGen/X86/vec_shuffle-22.ll | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 test/CodeGen/X86/vec_shuffle-22.ll (limited to 'test/CodeGen/X86/vec_shuffle-22.ll') 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 +} -- cgit v1.1