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28 lines
1014 B
LLVM
28 lines
1014 B
LLVM
; RUN: opt < %s -S -early-cse | FileCheck %s
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; RUN: opt < %s -S -basicaa -early-cse-memssa | FileCheck %s
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; Ensure we don't simplify away additions vectors of +0.0's (same as scalars).
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define <4 x float> @fV( <4 x float> %a) {
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; CHECK: %b = fadd <4 x float> %a, zeroinitializer
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%b = fadd <4 x float> %a, <float 0.0,float 0.0,float 0.0,float 0.0>
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ret <4 x float> %b
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}
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define <4 x float> @fW( <4 x float> %a) {
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; CHECK: ret <4 x float> %a
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%b = fadd <4 x float> %a, <float -0.0,float -0.0,float -0.0,float -0.0>
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ret <4 x float> %b
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}
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; CSE unary fnegs.
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define void @fX(<4 x float> *%p, <4 x float> %a) {
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; CHECK: %x = fneg <4 x float> %a
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; CHECK-NEXT: store volatile <4 x float> %x, <4 x float>* %p
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; CHECK-NEXT: store volatile <4 x float> %x, <4 x float>* %p
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%x = fneg <4 x float> %a
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%y = fneg <4 x float> %a
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store volatile <4 x float> %x, <4 x float>* %p
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store volatile <4 x float> %y, <4 x float>* %p
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ret void
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}
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