1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt -disable-output -S -passes=print-ir-similarity < %s 2>&1 | FileCheck %s 3 4; When a debug instruction is the first instruction in a block, when that block 5; has not been given a canonical numbering, since debug instructions are not 6; counted in similarity matching they must be ignored when creating canonical 7; relations from one region to another. This checks that this is enforced. 8 9; CHECK: 2 candidates of length 4. Found in: 10; CHECK-NEXT: Function: main, Basic Block: entry 11; CHECK-NEXT: Start Instruction: %0 = add i32 1, 4 12; CHECK-NEXT: End Instruction: %1 = sub i32 1, 4 13; CHECK-NEXT: Function: main, Basic Block: for.body169 14; CHECK-NEXT: Start Instruction: %2 = add i32 1, 4 15; CHECK-NEXT: End Instruction: %3 = sub i32 1, 4 16; CHECK-NEXT: 2 candidates of length 3. Found in: 17; CHECK-NEXT: Function: main, Basic Block: entry 18; CHECK-NEXT: Start Instruction: br label %for.body169 19; CHECK-NEXT: End Instruction: %1 = sub i32 1, 4 20; CHECK-NEXT: Function: main, Basic Block: for.body169 21; CHECK-NEXT: Start Instruction: br label %for.end122 22; CHECK-NEXT: End Instruction: %3 = sub i32 1, 4 23; CHECK-NEXT: 2 candidates of length 2. Found in: 24; CHECK-NEXT: Function: main, Basic Block: for.end122 25; CHECK-NEXT: Start Instruction: store i32 30, ptr undef, align 1 26; CHECK-NEXT: End Instruction: %1 = sub i32 1, 4 27; CHECK-NEXT: Function: main, Basic Block: for.end246 28; CHECK-NEXT: Start Instruction: store i32 0, ptr undef, align 1 29; CHECK-NEXT: End Instruction: %3 = sub i32 1, 4 30 31source_filename = "irsimilarity_crash.ll" 32 33@v_13 = external dso_local global ptr, align 1 34 35; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn 36declare void @llvm.dbg.declare(metadata, metadata, metadata) #0 37 38define dso_local i16 @main() { 39entry: 40 %0 = add i32 1, 4 41 br label %for.body169 42 43for.end122: ; preds = %for.cond108 44 store i32 30, ptr undef, align 1 45 %1 = sub i32 1, 4 46 ret i16 1 47 48for.body169: ; preds = %for.cond167 49 %2 = add i32 1, 4 50 br label %for.end122 51 52for.end246: ; preds = %for.cond167 53 call void @llvm.dbg.declare(metadata ptr undef, metadata !1, metadata !DIExpression()), !dbg !11 54 store i32 0, ptr undef, align 1 55 %3 = sub i32 1, 4 56 unreachable 57} 58 59attributes #0 = { nocallback nofree nosync nounwind readnone speculatable willreturn } 60 61!llvm.dbg.cu = !{} 62!llvm.module.flags = !{!0} 63 64!0 = !{i32 2, !"Debug Info Version", i32 3} 65!1 = !DILocalVariable(name: "v_68", scope: !2, file: !3, line: 522, type: !10) 66!2 = distinct !DILexicalBlock(scope: !4, file: !3, line: 522, column: 9) 67!3 = !DIFile(filename: "41097217.c", directory: "rt.outdir") 68!4 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 480, type: !5, scopeLine: 481, spFlags: DISPFlagDefinition, unit: !8, retainedNodes: !9) 69!5 = !DISubroutineType(types: !6) 70!6 = !{!7} 71!7 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed) 72!8 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 15.0.0.prerel", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, retainedTypes: !9, globals: !9, splitDebugInlining: false, nameTableKind: None) 73!9 = !{} 74!10 = !DIBasicType(name: "long", size: 32, encoding: DW_ATE_signed) 75!11 = !DILocation(line: 522, column: 23, scope: !2) 76;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line: 77; CHECK: {{.*}} 78