1 ; RUN: llc < %s -march=x86 -mattr=+sse2 | FileCheck %s 2 3 define i32 @t() nounwind optsize { 4 entry: 5 ; CHECK: punpckldq 6 %a = alloca <4 x i32> ; <<4 x i32>*> [#uses=2] 7 %b = alloca <4 x i32> ; <<4 x i32>*> [#uses=5] 8 volatile store <4 x i32> < i32 0, i32 1, i32 2, i32 3 >, <4 x i32>* %a 9 %tmp = load <4 x i32>* %a ; <<4 x i32>> [#uses=1] 10 store <4 x i32> %tmp, <4 x i32>* %b 11 %tmp1 = load <4 x i32>* %b ; <<4 x i32>> [#uses=1] 12 %tmp2 = load <4 x i32>* %b ; <<4 x i32>> [#uses=1] 13 %punpckldq = shufflevector <4 x i32> %tmp1, <4 x i32> %tmp2, <4 x i32> < i32 0, i32 4, i32 1, i32 5 > ; <<4 x i32>> [#uses=1] 14 store <4 x i32> %punpckldq, <4 x i32>* %b 15 %tmp3 = load <4 x i32>* %b ; <<4 x i32>> [#uses=1] 16 %result = extractelement <4 x i32> %tmp3, i32 0 ; <i32> [#uses=1] 17 ret i32 %result 18 } 19
