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