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
4target 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(
7define void @small_stride(double* nocapture %a, double* nocapture readonly %b) {
8entry:
9  br label %for.body
10
11; ALL: for.body:
12for.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:
25for.end:                                          ; preds = %for.body
26  ret void
27}
28
29; ALL-LABEL: @large_stride(
30define void @large_stride(double* nocapture %a, double* nocapture readonly %b) {
31entry:
32  br label %for.body
33
34; ALL: for.body:
35for.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:
49for.end:                                          ; preds = %for.body
50  ret void
51}
52