54 lines
2.5 KiB
LLVM
54 lines
2.5 KiB
LLVM
; RUN: opt -mcpu=kryo -mtriple=aarch64-gnu-linux -loop-data-prefetch -max-prefetch-iters-ahead=1000 -S < %s | FileCheck %s --check-prefix=LARGE_PREFETCH --check-prefix=ALL
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; RUN: opt -mcpu=kryo -mtriple=aarch64-gnu-linux -loop-data-prefetch -S < %s | FileCheck %s --check-prefix=NO_LARGE_PREFETCH --check-prefix=ALL
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; RUN: opt -mcpu=kryo -mtriple=aarch64-gnu-linux -passes=loop-data-prefetch -max-prefetch-iters-ahead=1000 -S < %s | FileCheck %s --check-prefix=LARGE_PREFETCH --check-prefix=ALL
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; RUN: opt -mcpu=kryo -mtriple=aarch64-gnu-linux -passes=loop-data-prefetch -S < %s | FileCheck %s --check-prefix=NO_LARGE_PREFETCH --check-prefix=ALL
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-n32:64-S128"
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; ALL-LABEL: @small_stride(
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define void @small_stride(double* nocapture %a, double* nocapture readonly %b) {
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entry:
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br label %for.body
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; ALL: 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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; ALL-NOT: 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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; ALL: 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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; ALL-LABEL: @large_stride(
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define void @large_stride(double* nocapture %a, double* nocapture readonly %b) {
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entry:
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br label %for.body
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; ALL: 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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; LARGE_PREFETCH: call void @llvm.prefetch
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; NO_LARGE_PREFETCH-NOT: 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, 150
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%exitcond = icmp eq i64 %indvars.iv.next, 160000
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br i1 %exitcond, label %for.end, label %for.body
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; ALL: 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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