text: ; REQUIRES: object-emission
  
  ; RUN: llc -mtriple=x86_64-unknown-unknown -O0 -filetype=obj < %s > %t
  ; RUN: llvm-dwarfdump %t | FileCheck %s
  
  ; IR generated from clang -g with the following source:
  ; struct foo {
  ;   foo(const foo&);
  ;   int i;
  ; };
  ;
  ; void func(foo f, foo g) {
  ;   f.i++;
  ; }
  
  ; CHECK: debug_info contents
  ; CHECK: DW_TAG_subprogram
  ; CHECK-NOT: DW_TAG
  ; CHECK: DW_AT_linkage_name{{.*}}"_Z4func3fooS_"
  ; CHECK-NOT: NULL
  ; CHECK: DW_TAG_formal_parameter
  ; CHECK-NOT: DW_TAG
  ; CHECK: DW_AT_name{{.*}}"f"
  ; CHECK-NOT: NULL
  ; CHECK: DW_TAG_formal_parameter
  ; CHECK-NOT: DW_TAG
  ; CHECK: DW_AT_name{{.*}}"g"
  
  %struct.foo = type { i32 }
  
  ; Function Attrs: nounwind uwtable
  define void @_Z4func3fooS_(%struct.foo* %f, %struct.foo* %g) #0 !dbg !4 {
  entry:
    call void @llvm.dbg.declare(metadata %struct.foo* %f, metadata !19, metadata !DIExpression()), !dbg !20
    call void @llvm.dbg.declare(metadata %struct.foo* %g, metadata !21, metadata !DIExpression()), !dbg !20
    %i = getelementptr inbounds %struct.foo, %struct.foo* %f, i32 0, i32 0, !dbg !22
    %0 = load i32, i32* %i, align 4, !dbg !22
    %inc = add nsw i32 %0, 1, !dbg !22
    store i32 %inc, i32* %i, align 4, !dbg !22
    ret void, !dbg !23
  }
  
  ; 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"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
  attributes #1 = { nounwind readnone }
  
  !llvm.dbg.cu = !{!0}
  !llvm.module.flags = !{!24}
  
  !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
  !1 = !DIFile(filename: "scratch.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch")
  !2 = !{}
  !4 = distinct !DISubprogram(name: "func", linkageName: "_Z4func3fooS_", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 6, file: !1, scope: !5, type: !6, variables: !2)
  !5 = !DIFile(filename: "scratch.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch")
  !6 = !DISubroutineType(types: !7)
  !7 = !{null, !8, !8}
  !8 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 1, size: 32, align: 32, file: !1, elements: !9)
  !9 = !{!10, !12}
  !10 = !DIDerivedType(tag: DW_TAG_member, name: "i", line: 3, size: 32, align: 32, file: !1, scope: !8, baseType: !11)
  !11 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
  !12 = !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !1, scope: !8, type: !13)
  !13 = !DISubroutineType(types: !14)
  !14 = !{null, !15, !16}
  !15 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !8)
  !16 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !17)
  !17 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8)
  !19 = !DILocalVariable(name: "f", line: 6, arg: 1, scope: !4, file: !5, type: !8)
  !20 = !DILocation(line: 6, scope: !4)
  !21 = !DILocalVariable(name: "g", line: 6, arg: 2, scope: !4, file: !5, type: !8)
  !22 = !DILocation(line: 7, scope: !4)
  !23 = !DILocation(line: 8, scope: !4)
  !24 = !{i32 1, !"Debug Info Version", i32 3}
  