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1; RUN: opt -mcpu=cyclone -mtriple=arm64-apple-ios -passes=loop-data-prefetch \2; RUN: -pass-remarks=loop-data-prefetch -S -max-prefetch-iters-ahead=100 \3; RUN: < %s 2>&1 | FileCheck %s4 5; ModuleID = '/tmp/s.c'6source_filename = "/tmp/s.c"7target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"8target triple = "arm64-apple-ios5.0.0"9 10; 1 struct MyStruct {11; 2 int field;12; 3 char kk[2044];13; 4 } *my_struct;14; 515; 6 int f(struct MyStruct *p, int N) {16; 7 int total = 0;17; 8 for (int i = 0; i < N; i++) {18; 9 total += my_struct[i].field;19; 10 }20; 11 return total;21; 12 }22 23; CHECK: remark: /tmp/s.c:9:27: prefetched memory access24 25%struct.MyStruct = type { i32, [2044 x i8] }26 27@my_struct = common global ptr null, align 828 29define i32 @f(ptr nocapture readnone %p, i32 %N) !dbg !6 {30entry:31 %cmp6 = icmp sgt i32 %N, 0, !dbg !832 br i1 %cmp6, label %for.body.lr.ph, label %for.cond.cleanup, !dbg !933 34for.body.lr.ph: ; preds = %entry35 %0 = load ptr, ptr @my_struct, align 8, !dbg !10, !tbaa !1136 br label %for.body, !dbg !937 38for.cond.cleanup: ; preds = %for.body, %entry39 %total.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]40 ret i32 %total.0.lcssa, !dbg !1541 42for.body: ; preds = %for.body, %for.body.lr.ph43 %indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]44 %total.07 = phi i32 [ 0, %for.body.lr.ph ], [ %add, %for.body ]45 %field = getelementptr inbounds %struct.MyStruct, ptr %0, i64 %indvars.iv, i32 0, !dbg !1646 %1 = load i32, ptr %field, align 4, !dbg !16, !tbaa !1747 %add = add nsw i32 %1, %total.07, !dbg !2048 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !949 %lftr.wideiv = trunc i64 %indvars.iv.next to i32, !dbg !950 %exitcond = icmp eq i32 %lftr.wideiv, %N, !dbg !951 br i1 %exitcond, label %for.cond.cleanup, label %for.body, !dbg !952}53 54!llvm.dbg.cu = !{!0}55!llvm.module.flags = !{!3, !4}56!llvm.ident = !{!5}57 58!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0", isOptimized: true, runtimeVersion: 0, emissionKind: NoDebug, enums: !2)59!1 = !DIFile(filename: "/tmp/s.c", directory: "/tmp")60!2 = !{}61!3 = !{i32 2, !"Debug Info Version", i32 3}62!4 = !{i32 1, !"PIC Level", i32 2}63!5 = !{!"clang version 3.9.0"}64!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)65!7 = !DISubroutineType(types: !2)66!8 = !DILocation(line: 8, column: 21, scope: !6)67!9 = !DILocation(line: 8, column: 3, scope: !6)68!10 = !DILocation(line: 9, column: 14, scope: !6)69!11 = !{!12, !12, i64 0}70!12 = !{!"any pointer", !13, i64 0}71!13 = !{!"omnipotent char", !14, i64 0}72!14 = !{!"Simple C/C++ TBAA"}73!15 = !DILocation(line: 11, column: 3, scope: !6)74!16 = !DILocation(line: 9, column: 27, scope: !6)75!17 = !{!18, !19, i64 0}76!18 = !{!"MyStruct", !19, i64 0, !13, i64 4}77!19 = !{!"int", !13, i64 0}78!20 = !DILocation(line: 9, column: 11, scope: !6)79