; RUN: llc -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s

target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32"
target triple = "thumbv7-apple-darwin10"

@x1 = internal global i8 1, align 1
@x2 = internal global i8 1, align 1
@x3 = internal global i8 1, align 1
@x4 = internal global i8 1, align 1
@x5 = global i8 1, align 1

; Check debug info output for merged global.
; DW_AT_location
; 0x03 DW_OP_addr
; 0x.. .long __MergedGlobals
; 0x10 DW_OP_constu
; 0x.. offset
; 0x22 DW_OP_plus

; CHECK: DW_TAG_variable
; CHECK-NOT: DW_TAG
; CHECK:    DW_AT_name {{.*}} "x1"
; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK:    DW_AT_location [DW_FORM_exprloc]        (<0x8> 03 [[ADDR:.. .. .. ..]] 10 00 22  )
; CHECK: DW_TAG_variable
; CHECK-NOT: DW_TAG
; CHECK:    DW_AT_name {{.*}} "x2"
; CHECK-NOT: {{DW_TAG|NULL}}
; CHECK:    DW_AT_location [DW_FORM_exprloc]        (<0x8> 03 [[ADDR]] 10 01 22  )

define zeroext i8 @get1(i8 zeroext %a) nounwind optsize {
entry:
  tail call void @llvm.dbg.value(metadata !{i8 %a}, i64 0, metadata !10, metadata !{i32 786690}), !dbg !30
  %0 = load i8* @x1, align 4, !dbg !30
  tail call void @llvm.dbg.value(metadata !{i8 %0}, i64 0, metadata !11, metadata !{i32 786690}), !dbg !30
  store i8 %a, i8* @x1, align 4, !dbg !30
  ret i8 %0, !dbg !31
}

declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone

define zeroext i8 @get2(i8 zeroext %a) nounwind optsize {
entry:
  tail call void @llvm.dbg.value(metadata !{i8 %a}, i64 0, metadata !18, metadata !{i32 786690}), !dbg !32
  %0 = load i8* @x2, align 4, !dbg !32
  tail call void @llvm.dbg.value(metadata !{i8 %0}, i64 0, metadata !19, metadata !{i32 786690}), !dbg !32
  store i8 %a, i8* @x2, align 4, !dbg !32
  ret i8 %0, !dbg !33
}

define zeroext i8 @get3(i8 zeroext %a) nounwind optsize {
entry:
  tail call void @llvm.dbg.value(metadata !{i8 %a}, i64 0, metadata !21, metadata !{i32 786690}), !dbg !34
  %0 = load i8* @x3, align 4, !dbg !34
  tail call void @llvm.dbg.value(metadata !{i8 %0}, i64 0, metadata !22, metadata !{i32 786690}), !dbg !34
  store i8 %a, i8* @x3, align 4, !dbg !34
  ret i8 %0, !dbg !35
}

define zeroext i8 @get4(i8 zeroext %a) nounwind optsize {
entry:
  tail call void @llvm.dbg.value(metadata !{i8 %a}, i64 0, metadata !24, metadata !{i32 786690}), !dbg !36
  %0 = load i8* @x4, align 4, !dbg !36
  tail call void @llvm.dbg.value(metadata !{i8 %0}, i64 0, metadata !25, metadata !{i32 786690}), !dbg !36
  store i8 %a, i8* @x4, align 4, !dbg !36
  ret i8 %0, !dbg !37
}

define zeroext i8 @get5(i8 zeroext %a) nounwind optsize {
entry:
  tail call void @llvm.dbg.value(metadata !{i8 %a}, i64 0, metadata !27, metadata !{i32 786690}), !dbg !38
  %0 = load i8* @x5, align 4, !dbg !38
  tail call void @llvm.dbg.value(metadata !{i8 %0}, i64 0, metadata !28, metadata !{i32 786690}), !dbg !38
  store i8 %a, i8* @x5, align 4, !dbg !38
  ret i8 %0, !dbg !39
}

!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!49}

!0 = metadata !{i32 786478, metadata !47, metadata !1, metadata !"get1", metadata !"get1", metadata !"get1", i32 4, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i8 (i8)* @get1, null, null, metadata !42, i32 4} ; [ DW_TAG_subprogram ]
!1 = metadata !{i32 786473, metadata !47} ; [ DW_TAG_file_type ]
!2 = metadata !{i32 786449, metadata !47, i32 1, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2369.8)", i1 true, metadata !"", i32 0, metadata !48, metadata !48, metadata !40, metadata !41,  metadata !48, metadata !""} ; [ DW_TAG_compile_unit ]
!3 = metadata !{i32 786453, metadata !47, metadata !1, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !4, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!4 = metadata !{metadata !5, metadata !5}
!5 = metadata !{i32 786468, metadata !47, metadata !1, metadata !"_Bool", i32 0, i64 8, i64 8, i64 0, i32 0, i32 2} ; [ DW_TAG_base_type ]
!6 = metadata !{i32 786478, metadata !47, metadata !1, metadata !"get2", metadata !"get2", metadata !"get2", i32 7, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i8 (i8)* @get2, null, null, metadata !43, i32 7} ; [ DW_TAG_subprogram ]
!7 = metadata !{i32 786478, metadata !47, metadata !1, metadata !"get3", metadata !"get3", metadata !"get3", i32 10, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i8 (i8)* @get3, null, null, metadata !44, i32 10} ; [ DW_TAG_subprogram ]
!8 = metadata !{i32 786478, metadata !47, metadata !1, metadata !"get4", metadata !"get4", metadata !"get4", i32 13, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i8 (i8)* @get4, null, null, metadata !45, i32 13} ; [ DW_TAG_subprogram ]
!9 = metadata !{i32 786478, metadata !47, metadata !1, metadata !"get5", metadata !"get5", metadata !"get5", i32 16, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i8 (i8)* @get5, null, null, metadata !46, i32 16} ; [ DW_TAG_subprogram ]
!10 = metadata !{i32 786689, metadata !0, metadata !"a", metadata !1, i32 4, metadata !5, i32 0, null} ; [ DW_TAG_arg_variable ]
!11 = metadata !{i32 786688, metadata !12, metadata !"b", metadata !1, i32 4, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!12 = metadata !{i32 786443, metadata !47, metadata !0, i32 4, i32 0, i32 0} ; [ DW_TAG_lexical_block ]
!13 = metadata !{i32 786484, i32 0, metadata !1, metadata !"x1", metadata !"x1", metadata !"", metadata !1, i32 3, metadata !5, i1 true, i1 true, i8* @x1, null} ; [ DW_TAG_variable ]
!14 = metadata !{i32 786484, i32 0, metadata !1, metadata !"x2", metadata !"x2", metadata !"", metadata !1, i32 6, metadata !5, i1 true, i1 true, i8* @x2, null} ; [ DW_TAG_variable ]
!15 = metadata !{i32 786484, i32 0, metadata !1, metadata !"x3", metadata !"x3", metadata !"", metadata !1, i32 9, metadata !5, i1 true, i1 true, i8* @x3, null} ; [ DW_TAG_variable ]
!16 = metadata !{i32 786484, i32 0, metadata !1, metadata !"x4", metadata !"x4", metadata !"", metadata !1, i32 12, metadata !5, i1 true, i1 true, i8* @x4, null} ; [ DW_TAG_variable ]
!17 = metadata !{i32 786484, i32 0, metadata !1, metadata !"x5", metadata !"x5", metadata !"", metadata !1, i32 15, metadata !5, i1 false, i1 true, i8* @x5, null} ; [ DW_TAG_variable ]
!18 = metadata !{i32 786689, metadata !6, metadata !"a", metadata !1, i32 7, metadata !5, i32 0, null} ; [ DW_TAG_arg_variable ]
!19 = metadata !{i32 786688, metadata !20, metadata !"b", metadata !1, i32 7, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!20 = metadata !{i32 786443, metadata !47, metadata !6, i32 7, i32 0, i32 1} ; [ DW_TAG_lexical_block ]
!21 = metadata !{i32 786689, metadata !7, metadata !"a", metadata !1, i32 10, metadata !5, i32 0, null} ; [ DW_TAG_arg_variable ]
!22 = metadata !{i32 786688, metadata !23, metadata !"b", metadata !1, i32 10, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!23 = metadata !{i32 786443, metadata !47, metadata !7, i32 10, i32 0, i32 2} ; [ DW_TAG_lexical_block ]
!24 = metadata !{i32 786689, metadata !8, metadata !"a", metadata !1, i32 13, metadata !5, i32 0, null} ; [ DW_TAG_arg_variable ]
!25 = metadata !{i32 786688, metadata !26, metadata !"b", metadata !1, i32 13, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!26 = metadata !{i32 786443, metadata !47, metadata !8, i32 13, i32 0, i32 3} ; [ DW_TAG_lexical_block ]
!27 = metadata !{i32 786689, metadata !9, metadata !"a", metadata !1, i32 16, metadata !5, i32 0, null} ; [ DW_TAG_arg_variable ]
!28 = metadata !{i32 786688, metadata !29, metadata !"b", metadata !1, i32 16, metadata !5, i32 0, null} ; [ DW_TAG_auto_variable ]
!29 = metadata !{i32 786443, metadata !47, metadata !9, i32 16, i32 0, i32 4} ; [ DW_TAG_lexical_block ]
!30 = metadata !{i32 4, i32 0, metadata !0, null}
!31 = metadata !{i32 4, i32 0, metadata !12, null}
!32 = metadata !{i32 7, i32 0, metadata !6, null}
!33 = metadata !{i32 7, i32 0, metadata !20, null}
!34 = metadata !{i32 10, i32 0, metadata !7, null}
!35 = metadata !{i32 10, i32 0, metadata !23, null}
!36 = metadata !{i32 13, i32 0, metadata !8, null}
!37 = metadata !{i32 13, i32 0, metadata !26, null}
!38 = metadata !{i32 16, i32 0, metadata !9, null}
!39 = metadata !{i32 16, i32 0, metadata !29, null}
!40 = metadata !{metadata !0, metadata !6, metadata !7, metadata !8, metadata !9}
!41 = metadata !{metadata !13, metadata !14, metadata !15, metadata !16, metadata !17}
!42 = metadata !{metadata !10, metadata !11}
!43 = metadata !{metadata !18, metadata !19}
!44 = metadata !{metadata !21, metadata !22}
!45 = metadata !{metadata !24, metadata !25}
!46 = metadata !{metadata !27, metadata !28}
!47 = metadata !{metadata !"foo.c", metadata !"/tmp/"}
!48 = metadata !{}
!49 = metadata !{i32 1, metadata !"Debug Info Version", i32 1}