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Summary: Refactor the existing support into a LoopDataPrefetch implementation class and a LoopDataPrefetchLegacyPass class that invokes it. Add a new LoopDataPrefetchPass for the new pass manager that utilizes the LoopDataPrefetch implementation class. Reviewers: mehdi_amini Subscribers: sanjoy, mzolotukhin, nemanjai, llvm-commits Differential Revision: https://reviews.llvm.org/D23483 llvm-svn: 278591
27 lines
1.0 KiB
LLVM
27 lines
1.0 KiB
LLVM
; RUN: opt -mcpu=a2 -loop-data-prefetch -S < %s | FileCheck %s
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; RUN: opt -mcpu=a2 -passes=loop-data-prefetch -S < %s | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-bgq-linux"
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define void @foo(double* nocapture %a, double* nocapture readonly %b) {
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entry:
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br label %for.body
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; CHECK: for.body:
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for.body: ; preds = %for.body, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds double, double* %b, i64 %indvars.iv
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; CHECK: call void @llvm.prefetch
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%0 = load double, double* %arrayidx, align 8
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%add = fadd double %0, 1.000000e+00
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%arrayidx2 = getelementptr inbounds double, double* %a, i64 %indvars.iv
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store double %add, double* %arrayidx2, align 8
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 1600
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br i1 %exitcond, label %for.end, label %for.body
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; CHECK: for.end:
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for.end: ; preds = %for.body
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ret void
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}
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