Favors pshufd over shufps when shuffling elements from one vector. pshufd is faster than shufps.

llvm-svn: 49244
diff --git a/llvm/test/CodeGen/X86/vec_set-6.ll b/llvm/test/CodeGen/X86/vec_set-6.ll
index a28c544..1eeedf1 100644
--- a/llvm/test/CodeGen/X86/vec_set-6.ll
+++ b/llvm/test/CodeGen/X86/vec_set-6.ll
@@ -2,7 +2,7 @@
 ; RUN: grep unpcklps %t | count 1
 ; RUN: grep shufps   %t | count 1
 
-define <4 x float> @test(float %a, float %b, float %c) {
+define <4 x float> @test(float %a, float %b, float %c) nounwind {
         %tmp = insertelement <4 x float> zeroinitializer, float %a, i32 1               ; <<4 x float>> [#uses=1]
         %tmp8 = insertelement <4 x float> %tmp, float %b, i32 2         ; <<4 x float>> [#uses=1]
         %tmp10 = insertelement <4 x float> %tmp8, float %c, i32 3               ; <<4 x float>> [#uses=1]