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:     -pass-remarks-with-hotness \
4; RUN:     < %s 2>&1 | FileCheck %s
5; RUN: opt -mcpu=cyclone -mtriple=arm64-apple-ios -passes=loop-data-prefetch \
6; RUN:     -pass-remarks=loop-data-prefetch -S -max-prefetch-iters-ahead=100 \
7; RUN:     -pass-remarks-with-hotness \
8; RUN:     < %s 2>&1 | FileCheck %s
9
10; ModuleID = '/tmp/s.c'
11source_filename = "/tmp/s.c"
12target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
13target triple = "arm64-apple-ios5.0.0"
14
15;   1	struct MyStruct {
16;   2	  int field;
17;   3	  char kk[2044];
18;   4	} *my_struct;
19;   5
20;   6	int f(struct MyStruct *p, int N) {
21;   7	  int total = 0;
22;   8	  for (int i = 0; i < N; i++) {
23;   9	    total += my_struct[i].field;
24;  10	  }
25;  11	  return total;
26;  12	}
27
28; CHECK: remark: /tmp/s.c:9:27: prefetched memory access (hotness: 600)
29
30%struct.MyStruct = type { i32, [2044 x i8] }
31
32@my_struct = common global %struct.MyStruct* null, align 8
33
34define i32 @f(%struct.MyStruct* nocapture readnone %p, i32 %N) !dbg !6 !prof !21 {
35entry:
36  %cmp6 = icmp sgt i32 %N, 0, !dbg !8
37  br i1 %cmp6, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !9, !prof !22
38
39for.body.lr.ph:                                   ; preds = %entry
40  %0 = load %struct.MyStruct*, %struct.MyStruct** @my_struct, align 8, !dbg !10, !tbaa !11
41  br label %for.body, !dbg !9
42
43for.cond.cleanup:                                 ; preds = %for.body, %entry
44  %total.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
45  ret i32 %total.0.lcssa, !dbg !15
46
47for.body:                                         ; preds = %for.body, %for.body.lr.ph
48  %indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
49  %total.07 = phi i32 [ 0, %for.body.lr.ph ], [ %add, %for.body ]
50  %field = getelementptr inbounds %struct.MyStruct, %struct.MyStruct* %0, i64 %indvars.iv, i32 0, !dbg !16
51  %1 = load i32, i32* %field, align 4, !dbg !16, !tbaa !17
52  %add = add nsw i32 %1, %total.07, !dbg !20
53  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !9
54  %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !9
55  %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !9
56  br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !9, !prof !23
57}
58
59!llvm.dbg.cu = !{!0}
60!llvm.module.flags = !{!3, !4}
61!llvm.ident = !{!5}
62
63!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0", isOptimized: true, runtimeVersion: 0, emissionKind: NoDebug, enums: !2)
64!1 = !DIFile(filename: "/tmp/s.c", directory: "/tmp")
65!2 = !{}
66!3 = !{i32 2, !"Debug Info Version", i32 3}
67!4 = !{i32 1, !"PIC Level", i32 2}
68!5 = !{!"clang version 3.9.0"}
69!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, variables: !2)
70!7 = !DISubroutineType(types: !2)
71!8 = !DILocation(line: 8, column: 21, scope: !6)
72!9 = !DILocation(line: 8, column: 3, scope: !6)
73!10 = !DILocation(line: 9, column: 14, scope: !6)
74!11 = !{!12, !12, i64 0}
75!12 = !{!"any pointer", !13, i64 0}
76!13 = !{!"omnipotent char", !14, i64 0}
77!14 = !{!"Simple C/C++ TBAA"}
78!15 = !DILocation(line: 11, column: 3, scope: !6)
79!16 = !DILocation(line: 9, column: 27, scope: !6)
80!17 = !{!18, !19, i64 0}
81!18 = !{!"MyStruct", !19, i64 0, !13, i64 4}
82!19 = !{!"int", !13, i64 0}
83!20 = !DILocation(line: 9, column: 11, scope: !6)
84!21 = !{!"function_entry_count", i64 6}
85!22 = !{!"branch_weights", i32 99, i32 1}
86!23 = !{!"branch_weights", i32 1, i32 99}
87