1; RUN: llc < %s -march=x86 -mattr=+sse2 | FileCheck %s 2 3; CHECK: foo 4; CHECK: xorps 5define void @foo(<4 x float>* %P) { 6 %T = load <4 x float>, <4 x float>* %P ; <<4 x float>> [#uses=1] 7 %S = fadd <4 x float> zeroinitializer, %T ; <<4 x float>> [#uses=1] 8 store <4 x float> %S, <4 x float>* %P 9 ret void 10} 11 12; CHECK: bar 13; CHECK: pxor 14define void @bar(<4 x i32>* %P) { 15 %T = load <4 x i32>, <4 x i32>* %P ; <<4 x i32>> [#uses=1] 16 %S = sub <4 x i32> zeroinitializer, %T ; <<4 x i32>> [#uses=1] 17 store <4 x i32> %S, <4 x i32>* %P 18 ret void 19} 20 21; Without any type hints from operations, we fall back to the smaller xorps. 22; The IR type <4 x i32> is ignored. 23; CHECK: untyped_zero 24; CHECK: xorps 25; CHECK: movaps 26define void @untyped_zero(<4 x i32>* %p) { 27entry: 28 store <4 x i32> zeroinitializer, <4 x i32>* %p, align 16 29 ret void 30} 31