[LLVMbugs] [Bug 6981] JIT crashes on code containing debug info

[bugzilla-daemon at llvm.org]

https://llvm.org/bugs/show_bug.cgi?id=6981

Paweł Bylica <chfast at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #3 from Paweł Bylica <chfast at gmail.com> ---
This cannot be reproduced any more with LLVM/clang 3.7. Tested on win32 with
MCJIT and interpreter with test:

target triple = "i686-pc-win32-msvc-elf"

; Function Attrs: nounwind uwtable
define i32 @main() #0 {
  %1 = alloca i32, align 4
  %a = alloca i32, align 4
  store i32 0, i32* %1
  br label %2, !dbg !11

; <label>:2                                       ; preds = %0
  call void @llvm.dbg.declare(metadata i32* %a, metadata !12, metadata !13),
!dbg !14
  store i32 0, i32* %a, align 4, !dbg !14
  ret i32 0, !dbg !15
}

; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1

attributes #0 = { nounwind uwtable "less-precise-fpmad"="false"
"no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"
"no-infs-fp-math"="false" "no-nans-fp-math"="false"
"stack-protector-buffer-size"="8" "target-cpu"="x86-64"
"unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone }

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!8, !9}
!llvm.ident = !{!10}

!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "Ubuntu
clang version 3.7.0-svn235195-1~exp1 (trunk) (based on LLVM 3.7.0)",
isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2,
retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
!1 = !DIFile(filename:
"/tmp/gcc-explorer-compiler115425-68-1iou2qg/example.cpp", directory:
"/gcc-explorer")
!2 = !{}
!3 = !{!4}
!4 = !DISubprogram(name: "main", scope: !1, file: !1, line: 1, type: !5,
isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped,
isOptimized: false, function: i32 ()* @main, variables: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{!7}
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{!"Ubuntu clang version 3.7.0-svn235195-1~exp1 (trunk) (based on LLVM
3.7.0)"}
!11 = !DILocation(line: 2, column: 9, scope: !4)
!12 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "a", scope: !4, file:
!1, line: 4, type: !7)
!13 = !DIExpression()
!14 = !DILocation(line: 4, column: 13, scope: !4)
!15 = !DILocation(line: 5, column: 9, scope: !4)

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