| ; RUN: opt -disable-output -S -passes=print-ir-similarity < %s 2>&1 | FileCheck %s |
| |
| ; When a debug instruction is the first instruction in a block, when that block |
| ; has not been given a canonical numbering, since debug instructions are not |
| ; counted in similarity matching they must be ignored when creating canonical |
| ; relations from one region to another. This checks that this is enforced. |
| |
| ; CHECK: 2 candidates of length 3. Found in: |
| ; CHECK-NEXT: Function: main, Basic Block: entry |
| ; CHECK-NEXT: Start Instruction: br label %for.body169 |
| ; CHECK-NEXT: End Instruction: %1 = sub i32 1, 4 |
| ; CHECK-NEXT: Function: main, Basic Block: for.body169 |
| ; CHECK-NEXT: Start Instruction: br label %for.end122 |
| ; CHECK-NEXT: End Instruction: %3 = sub i32 1, 4 |
| ; CHECK-NEXT: 2 candidates of length 2. Found in: |
| ; CHECK-NEXT: Function: main, Basic Block: for.end122 |
| ; CHECK-NEXT: Start Instruction: store i32 30, ptr undef, align 1 |
| ; CHECK-NEXT: End Instruction: %1 = sub i32 1, 4 |
| ; CHECK-NEXT: Function: main, Basic Block: for.end246 |
| ; CHECK-NEXT: Start Instruction: store i32 0, ptr undef, align 1 |
| ; CHECK-NEXT: End Instruction: %3 = sub i32 1, 4 |
| ; CHECK-NEXT: 2 candidates of length 4. Found in: |
| ; CHECK-NEXT: Function: main, Basic Block: entry |
| ; CHECK-NEXT: Start Instruction: %0 = add i32 1, 4 |
| ; CHECK-NEXT: End Instruction: %1 = sub i32 1, 4 |
| ; CHECK-NEXT: Function: main, Basic Block: for.body169 |
| ; CHECK-NEXT: Start Instruction: %2 = add i32 1, 4 |
| ; CHECK-NEXT: End Instruction: %3 = sub i32 1, 4 |
| |
| source_filename = "irsimilarity_crash.ll" |
| |
| @v_13 = external dso_local global ptr, align 1 |
| |
| ; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #0 |
| |
| define dso_local i16 @main() { |
| entry: |
| %0 = add i32 1, 4 |
| br label %for.body169 |
| |
| for.end122: ; preds = %for.cond108 |
| store i32 30, ptr undef, align 1 |
| %1 = sub i32 1, 4 |
| ret i16 1 |
| |
| for.body169: ; preds = %for.cond167 |
| %2 = add i32 1, 4 |
| br label %for.end122 |
| |
| for.end246: ; preds = %for.cond167 |
| call void @llvm.dbg.declare(metadata ptr undef, metadata !1, metadata !DIExpression()), !dbg !11 |
| store i32 0, ptr undef, align 1 |
| %3 = sub i32 1, 4 |
| unreachable |
| } |
| |
| attributes #0 = { nocallback nofree nosync nounwind readnone speculatable willreturn } |
| |
| !llvm.dbg.cu = !{} |
| !llvm.module.flags = !{!0} |
| |
| !0 = !{i32 2, !"Debug Info Version", i32 3} |
| !1 = !DILocalVariable(name: "v_68", scope: !2, file: !3, line: 522, type: !10) |
| !2 = distinct !DILexicalBlock(scope: !4, file: !3, line: 522, column: 9) |
| !3 = !DIFile(filename: "41097217.c", directory: "rt.outdir") |
| !4 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 480, type: !5, scopeLine: 481, spFlags: DISPFlagDefinition, unit: !8, retainedNodes: !9) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7} |
| !7 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed) |
| !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) |
| !9 = !{} |
| !10 = !DIBasicType(name: "long", size: 32, encoding: DW_ATE_signed) |
| !11 = !DILocation(line: 522, column: 23, scope: !2) |