1; RUN: llc -march=x86-64 -mattr=-sse4.2,+sse4.1 < %s | FileCheck %s 2; Make sure we don't load from the location pointed to by %p 3; twice: it has non-obvious performance implications, and 4; the relevant transformation doesn't know how to update 5; the chains correctly. 6; PR10747 7 8; CHECK-LABEL: test: 9; CHECK: pextrd $2, %xmm 10define <4 x i32> @test(<4 x i32>* %p) { 11 %v = load <4 x i32>, <4 x i32>* %p 12 %e = extractelement <4 x i32> %v, i32 2 13 %cmp = icmp eq i32 %e, 3 14 %sel = select i1 %cmp, <4 x i32> %v, <4 x i32> zeroinitializer 15 ret <4 x i32> %sel 16} 17