1 ; RUN: opt -mcpu=cyclone -mtriple=arm64-apple-ios -loop-data-prefetch \
2 ; RUN: -pass-remarks=loop-data-prefetch -S -max-prefetch-iters-ahead=100 \
3 ; RUN: < %s 2>&1 | FileCheck %s
4 ; RUN: opt -mcpu=cyclone -mtriple=arm64-apple-ios -passes=loop-data-prefetch \
5 ; RUN: -pass-remarks=loop-data-prefetch -S -max-prefetch-iters-ahead=100 \
6 ; RUN: < %s 2>&1 | FileCheck %s
8 ; ModuleID = '/tmp/s.c'
9 source_filename = "/tmp/s.c"
10 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
11 target triple = "arm64-apple-ios5.0.0"
18 ; 6 int f(struct MyStruct *p, int N) {
20 ; 8 for (int i = 0; i < N; i++) {
21 ; 9 total += my_struct[i].field;
26 ; CHECK: remark: /tmp/s.c:9:27: prefetched memory access
28 %struct.MyStruct = type { i32, [2044 x i8] }
30 @my_struct = common global %struct.MyStruct* null, align 8
32 define i32 @f(%struct.MyStruct* nocapture readnone %p, i32 %N) !dbg !6 {
34 %cmp6 = icmp sgt i32 %N, 0, !dbg !8
35 br i1 %cmp6, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !9
37 for.body.lr.ph: ; preds = %entry
38 %0 = load %struct.MyStruct*, %struct.MyStruct** @my_struct, align 8, !dbg !10, !tbaa !11
39 br label %for.body, !dbg !9
41 for.cond.cleanup: ; preds = %for.body, %entry
42 %total.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
43 ret i32 %total.0.lcssa, !dbg !15
45 for.body: ; preds = %for.body, %for.body.lr.ph
46 %indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
47 %total.07 = phi i32 [ 0, %for.body.lr.ph ], [ %add, %for.body ]
48 %field = getelementptr inbounds %struct.MyStruct, %struct.MyStruct* %0, i64 %indvars.iv, i32 0, !dbg !16
49 %1 = load i32, i32* %field, align 4, !dbg !16, !tbaa !17
50 %add = add nsw i32 %1, %total.07, !dbg !20
51 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !9
52 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !9
53 %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !9
54 br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !9
58 !llvm.module.flags = !{!3, !4}
61 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0", isOptimized: true, runtimeVersion: 0, emissionKind: NoDebug, enums: !2)
62 !1 = !DIFile(filename: "/tmp/s.c", directory: "/tmp")
64 !3 = !{i32 2, !"Debug Info Version", i32 3}
65 !4 = !{i32 1, !"PIC Level", i32 2}
66 !5 = !{!"clang version 3.9.0"}
67 !6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 6, type: !7, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
68 !7 = !DISubroutineType(types: !2)
69 !8 = !DILocation(line: 8, column: 21, scope: !6)
70 !9 = !DILocation(line: 8, column: 3, scope: !6)
71 !10 = !DILocation(line: 9, column: 14, scope: !6)
72 !11 = !{!12, !12, i64 0}
73 !12 = !{!"any pointer", !13, i64 0}
74 !13 = !{!"omnipotent char", !14, i64 0}
75 !14 = !{!"Simple C/C++ TBAA"}
76 !15 = !DILocation(line: 11, column: 3, scope: !6)
77 !16 = !DILocation(line: 9, column: 27, scope: !6)
78 !17 = !{!18, !19, i64 0}
79 !18 = !{!"MyStruct", !19, i64 0, !13, i64 4}
80 !19 = !{!"int", !13, i64 0}
81 !20 = !DILocation(line: 9, column: 11, scope: !6)