1; RUN: opt %loadNPMPolly -pass-remarks-missed="polly-detect" -polly-detect-track-failures '-passes=print<polly-detect>' -disable-output < %s 2>&1| FileCheck %s 2 3; struct b { 4; double **b; 5; }; 6; 7; void a(struct b *A) { 8; for (int i=0; i<32; i++) 9; A[i].b[i] = 0; 10; } 11 12; The loads are currently just adds %7 to the list of required invariant loads 13; and only -polly-scops checks whether it is actionally possible the be load 14; hoisted. The SCoP is still rejected by -polly-detect because it may alias 15; with %A and is not considered to be eligible for runtime alias checking. 16 17; CHECK: remark: ReportVariantBasePtr01.c:6:8: The following errors keep this region from being a Scop. 18; CHECK: remark: ReportVariantBasePtr01.c:7:5: Accesses to the arrays "A", " <unknown> " may access the same memory. 19 20target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 21 22%struct.b = type { ptr } 23 24define void @a(ptr nocapture readonly %A) #0 !dbg !4 { 25entry: 26 br label %entry.split 27 28entry.split: ; preds = %entry 29 tail call void @llvm.dbg.value(metadata ptr %A, i64 0, metadata !16, metadata !DIExpression()), !dbg !23 30 tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !17, metadata !DIExpression()), !dbg !25 31 br label %for.body, !dbg !27 32 33for.body: ; preds = %for.body, %entry.split 34 %indvar4 = phi i64 [ %indvar.next, %for.body ], [ 0, %entry.split ] 35 %b = getelementptr inbounds %struct.b, ptr %A, i64 %indvar4, i32 0, !dbg !26 36 %0 = mul i64 %indvar4, 4, !dbg !26 37 %1 = add i64 %0, 3, !dbg !26 38 %2 = add i64 %0, 2, !dbg !26 39 %3 = add i64 %0, 1, !dbg !26 40 %4 = load ptr, ptr %b, align 8, !dbg !26, !tbaa !28 41 %arrayidx = getelementptr ptr, ptr %4, i64 %0, !dbg !26 42 store ptr null, ptr %arrayidx, align 8, !dbg !26, !tbaa !33 43 %5 = load ptr, ptr %b, align 8, !dbg !26, !tbaa !28 44 %arrayidx.1 = getelementptr ptr, ptr %5, i64 %3, !dbg !26 45 store ptr null, ptr %arrayidx.1, align 8, !dbg !26, !tbaa !33 46 %6 = load ptr, ptr %b, align 8, !dbg !26, !tbaa !28 47 %arrayidx.2 = getelementptr ptr, ptr %6, i64 %2, !dbg !26 48 store ptr null, ptr %arrayidx.2, align 8, !dbg !26, !tbaa !33 49 %7 = load ptr, ptr %b, align 8, !dbg !26, !tbaa !28 50 %arrayidx.3 = getelementptr ptr, ptr %7, i64 %1, !dbg !26 51 store ptr null, ptr %arrayidx.3, align 8, !dbg !26, !tbaa !33 52 %indvar.next = add i64 %indvar4, 1, !dbg !27 53 %exitcond = icmp eq i64 %indvar.next, 8, !dbg !27 54 br i1 %exitcond, label %for.end, label %for.body, !dbg !27 55 56for.end: ; preds = %for.body 57 ret void, !dbg !34 58} 59 60declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 61 62attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 63attributes #1 = { nounwind readnone } 64 65!llvm.dbg.cu = !{!0} 66!llvm.module.flags = !{!20, !21} 67!llvm.ident = !{!22} 68 69!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 70!1 = !DIFile(filename: "ReportVariantBasePtr01.c", directory: "test/ScopDetectionDiagnostics") 71!2 = !{} 72!4 = distinct !DISubprogram(name: "a", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 5, file: !1, scope: !5, type: !6, retainedNodes: !15) 73!5 = !DIFile(filename: "ReportVariantBasePtr01.c", directory: "test/ScopDetectionDiagnostics") 74!6 = !DISubroutineType(types: !7) 75!7 = !{null, !8} 76!8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9) 77!9 = !DICompositeType(tag: DW_TAG_structure_type, name: "b", line: 1, size: 64, align: 64, file: !1, elements: !10) 78!10 = !{!11} 79!11 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 2, size: 64, align: 64, file: !1, scope: !9, baseType: !12) 80!12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !13) 81!13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !14) 82!14 = !DIBasicType(tag: DW_TAG_base_type, name: "double", size: 64, align: 64, encoding: DW_ATE_float) 83!15 = !{!16, !17} 84!16 = !DILocalVariable(name: "A", line: 5, arg: 1, scope: !4, file: !5, type: !8) 85!17 = !DILocalVariable(name: "i", line: 6, scope: !18, file: !5, type: !19) 86!18 = distinct !DILexicalBlock(line: 6, column: 3, file: !1, scope: !4) 87!19 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 88!20 = !{i32 2, !"Dwarf Version", i32 4} 89!21 = !{i32 2, !"Debug Info Version", i32 3} 90!22 = !{!"clang version 3.5.0 "} 91!23 = !DILocation(line: 5, column: 18, scope: !4) 92!24 = !{i32 0} 93!25 = !DILocation(line: 6, column: 12, scope: !18) 94!26 = !DILocation(line: 7, column: 5, scope: !18) 95!27 = !DILocation(line: 6, column: 8, scope: !18) 96!28 = !{!29, !30, i64 0} 97!29 = !{!"b", !30, i64 0} 98!30 = !{!"any pointer", !31, i64 0} 99!31 = !{!"omnipotent char", !32, i64 0} 100!32 = !{!"Simple C/C++ TBAA"} 101!33 = !{!30, !30, i64 0} 102!34 = !DILocation(line: 8, column: 1, scope: !4) 103