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3e5d5c53a0
The xorps instruction is smaller than pxor, so prefer that encoding. The ExecutionDepsFix pass will switch the encoding to pxor and xorpd when appropriate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143996 91177308-0d34-0410-b5e6-96231b3b80d8
31 lines
906 B
LLVM
31 lines
906 B
LLVM
; RUN: llc < %s -march=x86 -mattr=+sse2 | FileCheck %s
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; CHECK: foo
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; CHECK: xorps
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define void @foo(<4 x float>* %P) {
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%T = load <4 x float>* %P ; <<4 x float>> [#uses=1]
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%S = fadd <4 x float> zeroinitializer, %T ; <<4 x float>> [#uses=1]
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store <4 x float> %S, <4 x float>* %P
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ret void
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}
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; CHECK: bar
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; CHECK: pxor
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define void @bar(<4 x i32>* %P) {
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%T = load <4 x i32>* %P ; <<4 x i32>> [#uses=1]
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%S = add <4 x i32> zeroinitializer, %T ; <<4 x i32>> [#uses=1]
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store <4 x i32> %S, <4 x i32>* %P
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ret void
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}
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; Without any type hints from operations, we fall back to the smaller xorps.
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; The IR type <4 x i32> is ignored.
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; CHECK: untyped_zero
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; CHECK: xorps
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; CHECK: movaps
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define void @untyped_zero(<4 x i32>* %p) {
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entry:
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store <4 x i32> zeroinitializer, <4 x i32>* %p, align 16
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ret void
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}
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