1 ; RUN: opt -mcpu=cyclone -mtriple=arm64-apple-ios -passes=loop-data-prefetch -max-prefetch-iters-ahead=100 -S < %s | FileCheck %s --check-prefix=LARGE_PREFETCH --check-prefix=ALL
2 ; RUN: opt -mcpu=cyclone -mtriple=arm64-apple-ios -passes=loop-data-prefetch -S < %s | FileCheck %s --check-prefix=NO_LARGE_PREFETCH --check-prefix=ALL
3 ; RUN: opt -mcpu=generic -mtriple=arm64-apple-ios -passes=loop-data-prefetch -S < %s | FileCheck %s --check-prefix=NO_LARGE_PREFETCH --check-prefix=ALL
5 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"
7 ; ALL-LABEL: @small_stride(
8 define void @small_stride(ptr nocapture %a, ptr nocapture readonly %b) {
13 for.body: ; preds = %for.body, %entry
14 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
15 %arrayidx = getelementptr inbounds double, ptr %b, i64 %indvars.iv
16 ; ALL-NOT: call void @llvm.prefetch
17 %0 = load double, ptr %arrayidx, align 8
18 %add = fadd double %0, 1.000000e+00
19 %arrayidx2 = getelementptr inbounds double, ptr %a, i64 %indvars.iv
20 store double %add, ptr %arrayidx2, align 8
21 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
22 %exitcond = icmp eq i64 %indvars.iv.next, 1600
23 br i1 %exitcond, label %for.end, label %for.body
26 for.end: ; preds = %for.body
30 ; ALL-LABEL: @large_stride(
31 define void @large_stride(ptr nocapture %a, ptr nocapture readonly %b) {
36 for.body: ; preds = %for.body, %entry
37 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
38 %arrayidx = getelementptr inbounds double, ptr %b, i64 %indvars.iv
39 ; LARGE_PREFETCH: call void @llvm.prefetch
40 ; NO_LARGE_PREFETCH-NOT: call void @llvm.prefetch
41 %0 = load double, ptr %arrayidx, align 8
42 %add = fadd double %0, 1.000000e+00
43 %arrayidx2 = getelementptr inbounds double, ptr %a, i64 %indvars.iv
44 store double %add, ptr %arrayidx2, align 8
45 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 300
46 %exitcond = icmp eq i64 %indvars.iv.next, 160000
47 br i1 %exitcond, label %for.end, label %for.body
50 for.end: ; preds = %for.body