; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; 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 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
; CHECK-NEXT: 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
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)
;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
; CHECK: {{.*}}
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