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[SLP] Propagate 'nontemporal' attribute into vectorized instructions.
llvm-svn: 245633
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@ -242,6 +242,9 @@ static Instruction *propagateMetadata(Instruction *I, ArrayRef<Value *> VL) {
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case LLVMContext::MD_fpmath:
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case LLVMContext::MD_fpmath:
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MD = MDNode::getMostGenericFPMath(MD, IMD);
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MD = MDNode::getMostGenericFPMath(MD, IMD);
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break;
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break;
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case LLVMContext::MD_nontemporal:
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MD = MDNode::intersect(MD, IMD);
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break;
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}
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}
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}
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}
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I->setMetadata(Kind, MD);
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I->setMetadata(Kind, MD);
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47
test/Transforms/SLPVectorizer/AArch64/nontemporal.ll
Normal file
47
test/Transforms/SLPVectorizer/AArch64/nontemporal.ll
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@ -0,0 +1,47 @@
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; RUN: opt -S -basicaa -slp-vectorizer -dce < %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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target triple = "arm64-apple-ios5.0.0"
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; CHECK-LABEL: @foo
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define void @foo(float* noalias %a, float* noalias %b, float* noalias %c) {
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entry:
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; Check that we don't lose !nontemporal hint when vectorizing loads.
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; CHECK: %{{[0-9]*}} = load <4 x float>, <4 x float>* %{{[0-9]+}}, align 4, !nontemporal !0
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%b1 = load float, float* %b, align 4, !nontemporal !0
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%arrayidx.1 = getelementptr inbounds float, float* %b, i64 1
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%b2 = load float, float* %arrayidx.1, align 4, !nontemporal !0
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%arrayidx.2 = getelementptr inbounds float, float* %b, i64 2
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%b3 = load float, float* %arrayidx.2, align 4, !nontemporal !0
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%arrayidx.3 = getelementptr inbounds float, float* %b, i64 3
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%b4 = load float, float* %arrayidx.3, align 4, !nontemporal !0
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; Check that we don't introduce !nontemporal hint when the original scalar loads didn't have it.
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; CHECK: %{{[0-9]*}} = load <4 x float>, <4 x float>* %{{[0-9]+}}, align 4{{$}}
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%c1 = load float, float* %c, align 4
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%arrayidx2.1 = getelementptr inbounds float, float* %c, i64 1
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%c2 = load float, float* %arrayidx2.1, align 4
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%arrayidx2.2 = getelementptr inbounds float, float* %c, i64 2
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%c3 = load float, float* %arrayidx2.2, align 4
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%arrayidx2.3 = getelementptr inbounds float, float* %c, i64 3
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%c4 = load float, float* %arrayidx2.3, align 4
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%a1 = fadd float %b1, %c1
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%a2 = fadd float %b2, %c2
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%a3 = fadd float %b3, %c3
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%a4 = fadd float %b4, %c4
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; Check that we don't lose !nontemporal hint when vectorizing stores.
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; CHECK: store <4 x float> %{{[0-9]+}}, <4 x float>* %{{[0-9]+}}, align 4, !nontemporal !0
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store float %a1, float* %a, align 4, !nontemporal !0
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%arrayidx3.1 = getelementptr inbounds float, float* %a, i64 1
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store float %a2, float* %arrayidx3.1, align 4, !nontemporal !0
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%arrayidx3.2 = getelementptr inbounds float, float* %a, i64 2
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store float %a3, float* %arrayidx3.2, align 4, !nontemporal !0
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%arrayidx3.3 = getelementptr inbounds float, float* %a, i64 3
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store float %a4, float* %arrayidx3.3, align 4, !nontemporal !0
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; CHECK: ret void
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ret void
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}
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!0 = !{i32 1}
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