1; 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 2; RUN: opt -mcpu=kryo -mtriple=aarch64-gnu-linux -loop-data-prefetch -S < %s | FileCheck %s --check-prefix=NO_LARGE_PREFETCH --check-prefix=ALL 3; 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 4; RUN: opt -mcpu=kryo -mtriple=aarch64-gnu-linux -passes=loop-data-prefetch -S < %s | FileCheck %s --check-prefix=NO_LARGE_PREFETCH --check-prefix=ALL 5 6target 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" 7 8; ALL-LABEL: @small_stride( 9define void @small_stride(double* nocapture %a, double* nocapture readonly %b) { 10entry: 11 br label %for.body 12 13; ALL: for.body: 14for.body: ; preds = %for.body, %entry 15 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 16 %arrayidx = getelementptr inbounds double, double* %b, i64 %indvars.iv 17; ALL-NOT: call void @llvm.prefetch 18 %0 = load double, double* %arrayidx, align 8 19 %add = fadd double %0, 1.000000e+00 20 %arrayidx2 = getelementptr inbounds double, double* %a, i64 %indvars.iv 21 store double %add, double* %arrayidx2, align 8 22 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 23 %exitcond = icmp eq i64 %indvars.iv.next, 1600 24 br i1 %exitcond, label %for.end, label %for.body 25 26; ALL: for.end: 27for.end: ; preds = %for.body 28 ret void 29} 30 31; ALL-LABEL: @large_stride( 32define void @large_stride(double* nocapture %a, double* nocapture readonly %b) { 33entry: 34 br label %for.body 35 36; ALL: for.body: 37for.body: ; preds = %for.body, %entry 38 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 39 %arrayidx = getelementptr inbounds double, double* %b, i64 %indvars.iv 40; LARGE_PREFETCH: call void @llvm.prefetch 41; NO_LARGE_PREFETCH-NOT: call void @llvm.prefetch 42 %0 = load double, double* %arrayidx, align 8 43 %add = fadd double %0, 1.000000e+00 44 %arrayidx2 = getelementptr inbounds double, double* %a, i64 %indvars.iv 45 store double %add, double* %arrayidx2, align 8 46 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 150 47 %exitcond = icmp eq i64 %indvars.iv.next, 160000 48 br i1 %exitcond, label %for.end, label %for.body 49 50; ALL: for.end: 51for.end: ; preds = %for.body 52 ret void 53} 54