| ; RUN: opt %loadPolly -pass-remarks-missed="polly-detect" -polly-detect-track-failures -polly-detect -analyze < %s 2>&1| FileCheck %s |
| |
| ; struct b { |
| ; double **b; |
| ; }; |
| ; |
| ; void a(struct b *A) { |
| ; for (int i=0; i<32; i++) |
| ; A[i].b[i] = 0; |
| ; } |
| |
| ; The loads are currently just adds %7 to the list of required invariant loads |
| ; and only -polly-scops checks whether it is actionally possible the be load |
| ; hoisted. The SCoP is still rejected by -polly-detect because it may alias |
| ; with %A and is not considered to be eligble for runtime alias checking. |
| |
| ; CHECK: remark: ReportVariantBasePtr01.c:6:8: The following errors keep this region from being a Scop. |
| ; CHECK: remark: ReportVariantBasePtr01.c:7:5: Accesses to the arrays "A", " <unknown> " may access the same memory. |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| %struct.b = type { double** } |
| |
| define void @a(%struct.b* nocapture readonly %A) #0 !dbg !4 { |
| entry: |
| br label %entry.split |
| |
| entry.split: ; preds = %entry |
| tail call void @llvm.dbg.value(metadata %struct.b* %A, i64 0, metadata !16, metadata !DIExpression()), !dbg !23 |
| tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !17, metadata !DIExpression()), !dbg !25 |
| br label %for.body, !dbg !27 |
| |
| for.body: ; preds = %for.body, %entry.split |
| %indvar4 = phi i64 [ %indvar.next, %for.body ], [ 0, %entry.split ] |
| %b = getelementptr inbounds %struct.b, %struct.b* %A, i64 %indvar4, i32 0, !dbg !26 |
| %0 = mul i64 %indvar4, 4, !dbg !26 |
| %1 = add i64 %0, 3, !dbg !26 |
| %2 = add i64 %0, 2, !dbg !26 |
| %3 = add i64 %0, 1, !dbg !26 |
| %4 = load double**, double*** %b, align 8, !dbg !26, !tbaa !28 |
| %arrayidx = getelementptr double*, double** %4, i64 %0, !dbg !26 |
| store double* null, double** %arrayidx, align 8, !dbg !26, !tbaa !33 |
| %5 = load double**, double*** %b, align 8, !dbg !26, !tbaa !28 |
| %arrayidx.1 = getelementptr double*, double** %5, i64 %3, !dbg !26 |
| store double* null, double** %arrayidx.1, align 8, !dbg !26, !tbaa !33 |
| %6 = load double**, double*** %b, align 8, !dbg !26, !tbaa !28 |
| %arrayidx.2 = getelementptr double*, double** %6, i64 %2, !dbg !26 |
| store double* null, double** %arrayidx.2, align 8, !dbg !26, !tbaa !33 |
| %7 = load double**, double*** %b, align 8, !dbg !26, !tbaa !28 |
| %arrayidx.3 = getelementptr double*, double** %7, i64 %1, !dbg !26 |
| store double* null, double** %arrayidx.3, align 8, !dbg !26, !tbaa !33 |
| %indvar.next = add i64 %indvar4, 1, !dbg !27 |
| %exitcond = icmp eq i64 %indvar.next, 8, !dbg !27 |
| br i1 %exitcond, label %for.end, label %for.body, !dbg !27 |
| |
| for.end: ; preds = %for.body |
| ret void, !dbg !34 |
| } |
| |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 |
| |
| attributes #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" } |
| attributes #1 = { nounwind readnone } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!20, !21} |
| !llvm.ident = !{!22} |
| |
| !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) |
| !1 = !DIFile(filename: "ReportVariantBasePtr01.c", directory: "test/ScopDetectionDiagnostics") |
| !2 = !{} |
| !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) |
| !5 = !DIFile(filename: "ReportVariantBasePtr01.c", directory: "test/ScopDetectionDiagnostics") |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{null, !8} |
| !8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9) |
| !9 = !DICompositeType(tag: DW_TAG_structure_type, name: "b", line: 1, size: 64, align: 64, file: !1, elements: !10) |
| !10 = !{!11} |
| !11 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 2, size: 64, align: 64, file: !1, scope: !9, baseType: !12) |
| !12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !13) |
| !13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !14) |
| !14 = !DIBasicType(tag: DW_TAG_base_type, name: "double", size: 64, align: 64, encoding: DW_ATE_float) |
| !15 = !{!16, !17} |
| !16 = !DILocalVariable(name: "A", line: 5, arg: 1, scope: !4, file: !5, type: !8) |
| !17 = !DILocalVariable(name: "i", line: 6, scope: !18, file: !5, type: !19) |
| !18 = distinct !DILexicalBlock(line: 6, column: 3, file: !1, scope: !4) |
| !19 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !20 = !{i32 2, !"Dwarf Version", i32 4} |
| !21 = !{i32 2, !"Debug Info Version", i32 3} |
| !22 = !{!"clang version 3.5.0 "} |
| !23 = !DILocation(line: 5, column: 18, scope: !4) |
| !24 = !{i32 0} |
| !25 = !DILocation(line: 6, column: 12, scope: !18) |
| !26 = !DILocation(line: 7, column: 5, scope: !18) |
| !27 = !DILocation(line: 6, column: 8, scope: !18) |
| !28 = !{!29, !30, i64 0} |
| !29 = !{!"b", !30, i64 0} |
| !30 = !{!"any pointer", !31, i64 0} |
| !31 = !{!"omnipotent char", !32, i64 0} |
| !32 = !{!"Simple C/C++ TBAA"} |
| !33 = !{!30, !30, i64 0} |
| !34 = !DILocation(line: 8, column: 1, scope: !4) |