commit 55ca964e944b610bfa09dd52490772b3d9f92fea
author Duncan P. N. Exon Smith <dexonsmith@apple.com> Mon Aug 03 17:26:41 2015 +0000
committer Duncan P. N. Exon Smith <dexonsmith@apple.com> Mon Aug 03 17:26:41 2015 +0000
tree f748d9e2304be9b0b442f37f7d606e336bcd39f0
parent 910dde7ab2f725732222387af0d93f898afec42b

DI: Disallow uniquable DICompileUnits

Since r241097, `DIBuilder` has only created distinct `DICompileUnit`s.
The backend is liable to start relying on that (if it hasn't already),
so make uniquable `DICompileUnit`s illegal and automatically upgrade old
bitcode.  This is a nice cleanup, since we can remove an unnecessary
`DenseSet` (and the associated uniquing info) from `LLVMContextImpl`.

Almost all the testcases were updated with this script:

    git grep -e '= !DICompileUnit' -l -- test |
    grep -v test/Bitcode |
    xargs sed -i '' -e 's,= !DICompileUnit,= distinct !DICompileUnit,'

I imagine something similar should work for out-of-tree testcases.

llvm-svn: 243885

llvm/test/DebugInfo/X86/2010-04-13-PubType.ll

diff --git a/llvm/test/DebugInfo/X86/2010-04-13-PubType.ll b/llvm/test/DebugInfo/X86/2010-04-13-PubType.ll
index 240929c..a55e39c 100644
--- a/llvm/test/DebugInfo/X86/2010-04-13-PubType.ll
+++ b/llvm/test/DebugInfo/X86/2010-04-13-PubType.ll
@@ -34,7 +34,7 @@
 !0 = !DILocalVariable(name: "x", line: 7, arg: 1, scope: !1, file: !2, type: !7)
 !1 = !DISubprogram(name: "foo", linkageName: "foo", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 7, file: !18, scope: !2, type: !4, function: i32 (%struct.X*, %struct.Y*)* @foo)
 !2 = !DIFile(filename: "a.c", directory: "/tmp/")
-!3 = !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, emissionKind: 0, file: !18, enums: !19, retainedTypes: !19, subprograms: !17, imports:  null)
+!3 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, emissionKind: 0, file: !18, enums: !19, retainedTypes: !19, subprograms: !17, imports:  null)
 !4 = !DISubroutineType(types: !5)
 !5 = !{!6, !7, !9}
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)

llvm/test/DebugInfo/X86/2011-09-26-GlobalVarContext.ll

diff --git a/llvm/test/DebugInfo/X86/2011-09-26-GlobalVarContext.ll b/llvm/test/DebugInfo/X86/2011-09-26-GlobalVarContext.ll
index 3561172..e29ce88 100644
--- a/llvm/test/DebugInfo/X86/2011-09-26-GlobalVarContext.ll
+++ b/llvm/test/DebugInfo/X86/2011-09-26-GlobalVarContext.ll
@@ -19,7 +19,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!21}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk)", isOptimized: false, emissionKind: 0, file: !20, enums: !1, retainedTypes: !1, subprograms: !3, globals: !12, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk)", isOptimized: false, emissionKind: 0, file: !20, enums: !1, retainedTypes: !1, subprograms: !3, globals: !12, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "f", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !6, scope: !6, type: !7, function: i32 ()* @f)

llvm/test/DebugInfo/X86/2011-12-16-BadStructRef.ll

diff --git a/llvm/test/DebugInfo/X86/2011-12-16-BadStructRef.ll b/llvm/test/DebugInfo/X86/2011-12-16-BadStructRef.ll
index 5bd068e..f19c193 100644
--- a/llvm/test/DebugInfo/X86/2011-12-16-BadStructRef.ll
+++ b/llvm/test/DebugInfo/X86/2011-12-16-BadStructRef.ll
@@ -89,7 +89,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!83}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 146596)", isOptimized: false, emissionKind: 0, file: !82, enums: !1, retainedTypes: !3, subprograms: !27, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 146596)", isOptimized: false, emissionKind: 0, file: !82, enums: !1, retainedTypes: !3, subprograms: !27, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5, !9}
 !5 = !DICompositeType(tag: DW_TAG_class_type, name: "bar", line: 9, size: 128, align: 64, file: !82, elements: !7)

llvm/test/DebugInfo/X86/DW_AT_byte_size.ll

diff --git a/llvm/test/DebugInfo/X86/DW_AT_byte_size.ll b/llvm/test/DebugInfo/X86/DW_AT_byte_size.ll
index f460327..db999c8 100644
--- a/llvm/test/DebugInfo/X86/DW_AT_byte_size.ll
+++ b/llvm/test/DebugInfo/X86/DW_AT_byte_size.ll
@@ -26,7 +26,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!21}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 150996)", isOptimized: false, emissionKind: 0, file: !20, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 150996)", isOptimized: false, emissionKind: 0, file: !20, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "foo", linkageName: "_Z3fooP1A", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !20, scope: !6, type: !7, function: i32 (%struct.A*)* @_Z3fooP1A)

llvm/test/DebugInfo/X86/DW_AT_linkage_name.ll

diff --git a/llvm/test/DebugInfo/X86/DW_AT_linkage_name.ll b/llvm/test/DebugInfo/X86/DW_AT_linkage_name.ll
index 57f4bb3..d275678 100644
--- a/llvm/test/DebugInfo/X86/DW_AT_linkage_name.ll
+++ b/llvm/test/DebugInfo/X86/DW_AT_linkage_name.ll
@@ -77,7 +77,7 @@
 !llvm.module.flags = !{!23, !24}
 !llvm.ident = !{!25}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !16, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !16, globals: !2, imports: !2)
 !1 = !DIFile(filename: "linkage-name.cpp", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/DW_AT_location-reference.ll

diff --git a/llvm/test/DebugInfo/X86/DW_AT_location-reference.ll b/llvm/test/DebugInfo/X86/DW_AT_location-reference.ll
index ae080b9..ff1512c 100644
--- a/llvm/test/DebugInfo/X86/DW_AT_location-reference.ll
+++ b/llvm/test/DebugInfo/X86/DW_AT_location-reference.ll
@@ -104,7 +104,7 @@
 
 !0 = !DISubprogram(name: "f", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 4, file: !23, scope: !1, type: !3, function: void ()* @f, variables: !22)
 !1 = !DIFile(filename: "simple.c", directory: "/home/rengol01/temp/tests/dwarf/relocation")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk)", isOptimized: true, emissionKind: 1, file: !23, enums: !{}, retainedTypes: !{}, subprograms: !21, imports:  null)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk)", isOptimized: true, emissionKind: 1, file: !23, enums: !{}, retainedTypes: !{}, subprograms: !21, imports:  null)
 !3 = !DISubroutineType(types: !4)
 !4 = !{null}
 !5 = !DILocalVariable(name: "x", line: 5, scope: !6, file: !1, type: !7)

llvm/test/DebugInfo/X86/DW_AT_object_pointer.ll

diff --git a/llvm/test/DebugInfo/X86/DW_AT_object_pointer.ll b/llvm/test/DebugInfo/X86/DW_AT_object_pointer.ll
index 31f28ea..2171880 100644
--- a/llvm/test/DebugInfo/X86/DW_AT_object_pointer.ll
+++ b/llvm/test/DebugInfo/X86/DW_AT_object_pointer.ll
@@ -51,7 +51,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!38}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 163586) (llvm/trunk 163570)", isOptimized: false, emissionKind: 0, file: !37, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 163586) (llvm/trunk 163570)", isOptimized: false, emissionKind: 0, file: !37, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5, !10, !20}
 !5 = !DISubprogram(name: "foo", linkageName: "_Z3fooi", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 7, file: !6, scope: !6, type: !7, function: i32 (i32)* @_Z3fooi, variables: !1)

llvm/test/DebugInfo/X86/DW_AT_specification.ll

diff --git a/llvm/test/DebugInfo/X86/DW_AT_specification.ll b/llvm/test/DebugInfo/X86/DW_AT_specification.ll
index 993e623..85da5a6 100644
--- a/llvm/test/DebugInfo/X86/DW_AT_specification.ll
+++ b/llvm/test/DebugInfo/X86/DW_AT_specification.ll
@@ -20,7 +20,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!28}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 ()", isOptimized: false, emissionKind: 0, file: !27, enums: !1, retainedTypes: !1, subprograms: !3, globals: !18, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 ()", isOptimized: false, emissionKind: 0, file: !27, enums: !1, retainedTypes: !1, subprograms: !3, globals: !18, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "bar", linkageName: "_ZN3foo3barEv", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !6, scope: null, type: !7, function: void ()* @_ZN3foo3barEv, declaration: !11)

llvm/test/DebugInfo/X86/DW_AT_stmt_list_sec_offset.ll

diff --git a/llvm/test/DebugInfo/X86/DW_AT_stmt_list_sec_offset.ll b/llvm/test/DebugInfo/X86/DW_AT_stmt_list_sec_offset.ll
index c8e71a2..ef841f6 100644
--- a/llvm/test/DebugInfo/X86/DW_AT_stmt_list_sec_offset.ll
+++ b/llvm/test/DebugInfo/X86/DW_AT_stmt_list_sec_offset.ll
@@ -30,7 +30,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9, !11}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "test.c", directory: "C:\5CProjects")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/DW_TAG_friend.ll

diff --git a/llvm/test/DebugInfo/X86/DW_TAG_friend.ll b/llvm/test/DebugInfo/X86/DW_TAG_friend.ll
index 8237c40..8681f33 100644
--- a/llvm/test/DebugInfo/X86/DW_TAG_friend.ll
+++ b/llvm/test/DebugInfo/X86/DW_TAG_friend.ll
@@ -18,7 +18,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!29}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 153413) (llvm/trunk 153428)", isOptimized: false, emissionKind: 0, file: !28, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 153413) (llvm/trunk 153428)", isOptimized: false, emissionKind: 0, file: !28, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5, !17}
 !5 = !DIGlobalVariable(name: "a", line: 10, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: %class.A* @a)

llvm/test/DebugInfo/X86/InlinedFnLocalVar.ll

diff --git a/llvm/test/DebugInfo/X86/InlinedFnLocalVar.ll b/llvm/test/DebugInfo/X86/InlinedFnLocalVar.ll
index 6c50eee..184554e 100644
--- a/llvm/test/DebugInfo/X86/InlinedFnLocalVar.ll
+++ b/llvm/test/DebugInfo/X86/InlinedFnLocalVar.ll
@@ -27,7 +27,7 @@
 
 !0 = !DISubprogram(name: "foo", line: 9, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 9, file: !27, scope: !1, type: !3, variables: !24)
 !1 = !DIFile(filename: "bar.c", directory: "/tmp/")
-!2 = !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !27, enums: !20, retainedTypes: !20, subprograms: !25, globals: !26, imports:  !20)
+!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !27, enums: !20, retainedTypes: !20, subprograms: !25, globals: !26, imports:  !20)
 !3 = !DISubroutineType(types: !4)
 !4 = !{!5, !5}
 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)

llvm/test/DebugInfo/X86/aligned_stack_var.ll

diff --git a/llvm/test/DebugInfo/X86/aligned_stack_var.ll b/llvm/test/DebugInfo/X86/aligned_stack_var.ll
index a24a27f..07b8dd8 100644
--- a/llvm/test/DebugInfo/X86/aligned_stack_var.ll
+++ b/llvm/test/DebugInfo/X86/aligned_stack_var.ll
@@ -27,7 +27,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!15}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 155696:155697) (llvm/trunk 155696)", isOptimized: false, emissionKind: 0, file: !14, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 155696:155697) (llvm/trunk 155696)", isOptimized: false, emissionKind: 0, file: !14, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "run", linkageName: "_Z3runv", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !14, scope: !6, type: !7, function: void ()* @_Z3runv, variables: !1)

llvm/test/DebugInfo/X86/arange-and-stub.ll

diff --git a/llvm/test/DebugInfo/X86/arange-and-stub.ll b/llvm/test/DebugInfo/X86/arange-and-stub.ll
index bbc6de5..55ea8d1 100644
--- a/llvm/test/DebugInfo/X86/arange-and-stub.ll
+++ b/llvm/test/DebugInfo/X86/arange-and-stub.ll
@@ -32,7 +32,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!17, !18}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 234308) (llvm/trunk 234310)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !10, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 234308) (llvm/trunk 234310)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !10, imports: !2)
 !1 = !DIFile(filename: "/Users/espindola/llvm/<stdin>", directory: "/Users/espindola/llvm/build")
 !2 = !{}
 !3 = !{!4, !9}

llvm/test/DebugInfo/X86/arange.ll

diff --git a/llvm/test/DebugInfo/X86/arange.ll b/llvm/test/DebugInfo/X86/arange.ll
index 0b0c2a0..f88cdb3 100644
--- a/llvm/test/DebugInfo/X86/arange.ll
+++ b/llvm/test/DebugInfo/X86/arange.ll
@@ -29,7 +29,7 @@
 !llvm.module.flags = !{!12, !13}
 !llvm.ident = !{!14}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !2, globals: !9, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !2, globals: !9, imports: !2)
 !1 = !DIFile(filename: "simple.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/arguments.ll

diff --git a/llvm/test/DebugInfo/X86/arguments.ll b/llvm/test/DebugInfo/X86/arguments.ll
index 6a58718..89bb79f 100644
--- a/llvm/test/DebugInfo/X86/arguments.ll
+++ b/llvm/test/DebugInfo/X86/arguments.ll
@@ -49,7 +49,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!24}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "scratch.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/array.ll

diff --git a/llvm/test/DebugInfo/X86/array.ll b/llvm/test/DebugInfo/X86/array.ll
index 8a59c24..604b65e 100644
--- a/llvm/test/DebugInfo/X86/array.ll
+++ b/llvm/test/DebugInfo/X86/array.ll
@@ -60,7 +60,7 @@
 !llvm.module.flags = !{!25, !26}
 !llvm.ident = !{!27}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "array.c", directory: "")
 !2 = !{}
 !3 = !{!4, !12}

llvm/test/DebugInfo/X86/array2.ll

diff --git a/llvm/test/DebugInfo/X86/array2.ll b/llvm/test/DebugInfo/X86/array2.ll
index 61f2f10..05b9b9e 100644
--- a/llvm/test/DebugInfo/X86/array2.ll
+++ b/llvm/test/DebugInfo/X86/array2.ll
@@ -72,7 +72,7 @@
 !llvm.module.flags = !{!16, !17}
 !llvm.ident = !{!18}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "array.c", directory: "")
 !2 = !{}
 !3 = !{!4, !10}

llvm/test/DebugInfo/X86/bitfields.ll

diff --git a/llvm/test/DebugInfo/X86/bitfields.ll b/llvm/test/DebugInfo/X86/bitfields.ll
index e895fd6..e0fa4f6 100644
--- a/llvm/test/DebugInfo/X86/bitfields.ll
+++ b/llvm/test/DebugInfo/X86/bitfields.ll
@@ -54,7 +54,7 @@
 !llvm.module.flags = !{!13, !14, !15}
 !llvm.ident = !{!16}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 240548) (llvm/trunk 240554)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "bitfields.c", directory: "/")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/block-capture.ll

diff --git a/llvm/test/DebugInfo/X86/block-capture.ll b/llvm/test/DebugInfo/X86/block-capture.ll
index 7e844f8..ee483e4 100644
--- a/llvm/test/DebugInfo/X86/block-capture.ll
+++ b/llvm/test/DebugInfo/X86/block-capture.ll
@@ -62,7 +62,7 @@
 !llvm.module.flags = !{!16, !17, !18, !19, !20, !21, !22}
 !llvm.ident = !{!23}
 
-!0 = !DICompileUnit(language: DW_LANG_ObjC, producer: "clang version 3.6.0 (trunk 223471)", isOptimized: false, runtimeVersion: 2, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_ObjC, producer: "clang version 3.6.0 (trunk 223471)", isOptimized: false, runtimeVersion: 2, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "foo.m", directory: "")
 !2 = !{}
 !3 = !{!8}

llvm/test/DebugInfo/X86/byvalstruct.ll

diff --git a/llvm/test/DebugInfo/X86/byvalstruct.ll b/llvm/test/DebugInfo/X86/byvalstruct.ll
index 2d48ac3..bd20248 100644
--- a/llvm/test/DebugInfo/X86/byvalstruct.ll
+++ b/llvm/test/DebugInfo/X86/byvalstruct.ll
@@ -87,7 +87,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!24, !25, !26, !27, !38}
 
-!0 = !DICompileUnit(language: DW_LANG_ObjC_plus_plus, producer: "clang version 3.4 ", isOptimized: false, runtimeVersion: 2, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !6, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_ObjC_plus_plus, producer: "clang version 3.4 ", isOptimized: false, runtimeVersion: 2, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !6, globals: !2, imports: !2)
 !1 = !DIFile(filename: "t.mm", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/c-type-units.ll

diff --git a/llvm/test/DebugInfo/X86/c-type-units.ll b/llvm/test/DebugInfo/X86/c-type-units.ll
index 6756bd4..d832138 100644
--- a/llvm/test/DebugInfo/X86/c-type-units.ll
+++ b/llvm/test/DebugInfo/X86/c-type-units.ll
@@ -17,7 +17,7 @@
 !llvm.module.flags = !{!7, !8}
 !llvm.ident = !{!9}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "simple.c", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/coff_debug_info_type.ll

diff --git a/llvm/test/DebugInfo/X86/coff_debug_info_type.ll b/llvm/test/DebugInfo/X86/coff_debug_info_type.ll
index fd86c88..4c3ee3f 100644
--- a/llvm/test/DebugInfo/X86/coff_debug_info_type.ll
+++ b/llvm/test/DebugInfo/X86/coff_debug_info_type.ll
@@ -29,7 +29,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9, !11}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "test.c", directory: "C:\5CProjects")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/coff_relative_names.ll

diff --git a/llvm/test/DebugInfo/X86/coff_relative_names.ll b/llvm/test/DebugInfo/X86/coff_relative_names.ll
index 6b7864a..8613fe5 100644
--- a/llvm/test/DebugInfo/X86/coff_relative_names.ll
+++ b/llvm/test/DebugInfo/X86/coff_relative_names.ll
@@ -23,7 +23,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9, !11}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "test.c", directory: "C:\5CProjects")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/concrete_out_of_line.ll

diff --git a/llvm/test/DebugInfo/X86/concrete_out_of_line.ll b/llvm/test/DebugInfo/X86/concrete_out_of_line.ll
index 2d67e44..42b5a3b 100644
--- a/llvm/test/DebugInfo/X86/concrete_out_of_line.ll
+++ b/llvm/test/DebugInfo/X86/concrete_out_of_line.ll
@@ -76,7 +76,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!60}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 ()", isOptimized: true, emissionKind: 0, file: !59, enums: !1, retainedTypes: !1, subprograms: !3, globals: !47, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 ()", isOptimized: true, emissionKind: 0, file: !59, enums: !1, retainedTypes: !1, subprograms: !3, globals: !47, imports:  !1)
 !1 = !{}
 !3 = !{!5, !23, !27, !31}
 !5 = !DISubprogram(name: "Release", linkageName: "_ZN17nsAutoRefCnt7ReleaseEv", line: 14, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 14, file: !6, scope: null, type: !7, function: i32 ()* @_ZN17nsAutoRefCnt7ReleaseEv , declaration: !12, variables: !20)

llvm/test/DebugInfo/X86/constant-aggregate.ll

diff --git a/llvm/test/DebugInfo/X86/constant-aggregate.ll b/llvm/test/DebugInfo/X86/constant-aggregate.ll
index 8135873..896e9aa 100644
--- a/llvm/test/DebugInfo/X86/constant-aggregate.ll
+++ b/llvm/test/DebugInfo/X86/constant-aggregate.ll
@@ -72,7 +72,7 @@
 !llvm.module.flags = !{!33, !34, !35}
 !llvm.ident = !{!36}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (trunk 225364) (llvm/trunk 225366)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !11, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (trunk 225364) (llvm/trunk 225366)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !11, globals: !2, imports: !2)
 !1 = !DIFile(filename: "sroasplit-4.cpp", directory: "")
 !2 = !{}
 !3 = !{!4, !8}

llvm/test/DebugInfo/X86/cu-ranges-odr.ll

diff --git a/llvm/test/DebugInfo/X86/cu-ranges-odr.ll b/llvm/test/DebugInfo/X86/cu-ranges-odr.ll
index 7af6d9c..240df66 100644
--- a/llvm/test/DebugInfo/X86/cu-ranges-odr.ll
+++ b/llvm/test/DebugInfo/X86/cu-ranges-odr.ll
@@ -61,7 +61,7 @@
 !llvm.module.flags = !{!23, !24}
 !llvm.ident = !{!25}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 (trunk 199923) (llvm/trunk 199940)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !13, globals: !21, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 (trunk 199923) (llvm/trunk 199940)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !13, globals: !21, imports: !2)
 !1 = !DIFile(filename: "baz.cpp", directory: "/usr/local/google/home/echristo/tmp")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/cu-ranges.ll

diff --git a/llvm/test/DebugInfo/X86/cu-ranges.ll b/llvm/test/DebugInfo/X86/cu-ranges.ll
index a8fd5c3..8ce29c7 100644
--- a/llvm/test/DebugInfo/X86/cu-ranges.ll
+++ b/llvm/test/DebugInfo/X86/cu-ranges.ll
@@ -56,7 +56,7 @@
 !llvm.module.flags = !{!10, !11}
 !llvm.ident = !{!12}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (trunk 204164) (llvm/trunk 204183)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (trunk 204164) (llvm/trunk 204183)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "z.c", directory: "/usr/local/google/home/echristo")
 !2 = !{}
 !3 = !{!4, !9}

llvm/test/DebugInfo/X86/data_member_location.ll

diff --git a/llvm/test/DebugInfo/X86/data_member_location.ll b/llvm/test/DebugInfo/X86/data_member_location.ll
index c17c45b..5b33096 100644
--- a/llvm/test/DebugInfo/X86/data_member_location.ll
+++ b/llvm/test/DebugInfo/X86/data_member_location.ll
@@ -34,7 +34,7 @@
 !llvm.module.flags = !{!13, !15}
 !llvm.ident = !{!14}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !2, globals: !10, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !2, globals: !10, imports: !2)
 !1 = !DIFile(filename: "data_member_location.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/dbg-at-specficiation.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-at-specficiation.ll b/llvm/test/DebugInfo/X86/dbg-at-specficiation.ll
index ccb5ab1..7302aae 100644
--- a/llvm/test/DebugInfo/X86/dbg-at-specficiation.ll
+++ b/llvm/test/DebugInfo/X86/dbg-at-specficiation.ll
@@ -8,7 +8,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!12}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 140253)", isOptimized: true, emissionKind: 0, file: !11, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 140253)", isOptimized: true, emissionKind: 0, file: !11, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3)
 !2 = !{}
 !3 = !{!5}
 !5 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: [10 x i32]* @a)

llvm/test/DebugInfo/X86/dbg-byval-parameter.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-byval-parameter.ll b/llvm/test/DebugInfo/X86/dbg-byval-parameter.ll
index ced7d1c..a2498ed 100644
--- a/llvm/test/DebugInfo/X86/dbg-byval-parameter.ll
+++ b/llvm/test/DebugInfo/X86/dbg-byval-parameter.ll
@@ -31,7 +31,7 @@
 !0 = !DILocalVariable(name: "my_r0", line: 11, arg: 1, scope: !1, file: !2, type: !7)
 !1 = !DISubprogram(name: "foo", linkageName: "foo", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !19, scope: !2, type: !4, function: double (%struct.Rect*)* @foo)
 !2 = !DIFile(filename: "b2.c", directory: "/tmp/")
-!3 = !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, emissionKind: 0, file: !19, enums: !20, retainedTypes: !20, subprograms: !18, imports:  null)
+!3 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, emissionKind: 0, file: !19, enums: !20, retainedTypes: !20, subprograms: !18, imports:  null)
 !4 = !DISubroutineType(types: !5)
 !5 = !{!6, !7}
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "double", size: 64, align: 64, encoding: DW_ATE_float)

llvm/test/DebugInfo/X86/dbg-const-int.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-const-int.ll b/llvm/test/DebugInfo/X86/dbg-const-int.ll
index cac74bb..566b489 100644
--- a/llvm/test/DebugInfo/X86/dbg-const-int.ll
+++ b/llvm/test/DebugInfo/X86/dbg-const-int.ll
@@ -21,7 +21,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!15}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 132191)", isOptimized: true, emissionKind: 0, file: !13, enums: !14, retainedTypes: !14, subprograms: !11, imports:  null)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 132191)", isOptimized: true, emissionKind: 0, file: !13, enums: !14, retainedTypes: !14, subprograms: !11, imports:  null)
 !1 = !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, file: !13, scope: !2, type: !3, function: i32 ()* @foo, variables: !12)
 !2 = !DIFile(filename: "a.c", directory: "/private/tmp")
 !3 = !DISubroutineType(types: !4)

llvm/test/DebugInfo/X86/dbg-const.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-const.ll b/llvm/test/DebugInfo/X86/dbg-const.ll
index efd81bc..139b9ad 100644
--- a/llvm/test/DebugInfo/X86/dbg-const.ll
+++ b/llvm/test/DebugInfo/X86/dbg-const.ll
@@ -33,7 +33,7 @@
 
 !0 = !DISubprogram(name: "foobar", linkageName: "foobar", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, file: !15, scope: !1, type: !3, function: i32 ()* @foobar, variables: !14)
 !1 = !DIFile(filename: "mu.c", directory: "/private/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 114183)", isOptimized: true, emissionKind: 1, file: !15, enums: !16, retainedTypes: !16, subprograms: !13, imports:  null)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 114183)", isOptimized: true, emissionKind: 1, file: !15, enums: !16, retainedTypes: !16, subprograms: !13, imports:  null)
 !3 = !DISubroutineType(types: !4)
 !4 = !{!5}
 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)

llvm/test/DebugInfo/X86/dbg-declare-arg.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-declare-arg.ll b/llvm/test/DebugInfo/X86/dbg-declare-arg.ll
index 2b239f2..7f49905 100644
--- a/llvm/test/DebugInfo/X86/dbg-declare-arg.ll
+++ b/llvm/test/DebugInfo/X86/dbg-declare-arg.ll
@@ -74,7 +74,7 @@
 
 !0 = !DISubprogram(name: "~A", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !51, scope: !1, type: !11)
 !1 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 2, size: 128, align: 32, file: !51, scope: !2, elements: !4)
-!2 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 (trunk 130127)", isOptimized: false, emissionKind: 1, file: !51, enums: !{}, retainedTypes: !{}, subprograms: !50)
+!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 (trunk 130127)", isOptimized: false, emissionKind: 1, file: !51, enums: !{}, retainedTypes: !{}, subprograms: !50)
 !3 = !DIFile(filename: "a.cc", directory: "/private/tmp")
 !4 = !{!5, !7, !8, !9, !0, !10, !14}
 !5 = !DIDerivedType(tag: DW_TAG_member, name: "x", line: 2, size: 32, align: 32, file: !51, scope: !3, baseType: !6)

llvm/test/DebugInfo/X86/dbg-declare.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-declare.ll b/llvm/test/DebugInfo/X86/dbg-declare.ll
index 71b698e..11c5cb4 100644
--- a/llvm/test/DebugInfo/X86/dbg-declare.ll
+++ b/llvm/test/DebugInfo/X86/dbg-declare.ll
@@ -30,7 +30,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!27}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 153698)", isOptimized: false, emissionKind: 0, file: !26, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 153698)", isOptimized: false, emissionKind: 0, file: !26, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "foo", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !26, scope: !0, type: !7, function: i32 (i32*)* @foo)

llvm/test/DebugInfo/X86/dbg-file-name.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-file-name.ll b/llvm/test/DebugInfo/X86/dbg-file-name.ll
index cc18c08..c568129 100644
--- a/llvm/test/DebugInfo/X86/dbg-file-name.ll
+++ b/llvm/test/DebugInfo/X86/dbg-file-name.ll
@@ -13,7 +13,7 @@
 !llvm.module.flags = !{!12}
 
 !1 = !DIFile(filename: "simple.c", directory: "/Users/manav/one/two")
-!2 = !DICompileUnit(language: DW_LANG_C89, producer: "LLVM build 00", isOptimized: true, emissionKind: 0, file: !10, enums: !11, retainedTypes: !11, subprograms: !9)
+!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "LLVM build 00", isOptimized: true, emissionKind: 0, file: !10, enums: !11, retainedTypes: !11, subprograms: !9)
 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !6 = !DISubprogram(name: "main", linkageName: "main", line: 9, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !10, scope: !1, type: !7, function: i32 ()* @main)
 !7 = !DISubroutineType(types: !8)

llvm/test/DebugInfo/X86/dbg-i128-const.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-i128-const.ll b/llvm/test/DebugInfo/X86/dbg-i128-const.ll
index f773786..008cfcf 100644
--- a/llvm/test/DebugInfo/X86/dbg-i128-const.ll
+++ b/llvm/test/DebugInfo/X86/dbg-i128-const.ll
@@ -21,7 +21,7 @@
 !2 = distinct !DILexicalBlock(line: 26, column: 0, file: !13, scope: !3)
 !3 = !DISubprogram(name: "__foo", linkageName: "__foo", line: 26, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 26, file: !13, scope: !4, type: !6, function: i128 (i128, i128)* @__foo)
 !4 = !DIFile(filename: "foo.c", directory: "/tmp")
-!5 = !DICompileUnit(language: DW_LANG_C89, producer: "clang", isOptimized: true, emissionKind: 0, file: !13, enums: !15, retainedTypes: !15, subprograms: !12, imports:  null)
+!5 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "clang", isOptimized: true, emissionKind: 0, file: !13, enums: !15, retainedTypes: !15, subprograms: !12, imports:  null)
 !6 = !DISubroutineType(types: !7)
 !7 = !{!8, !8, !8}
 !8 = !DIDerivedType(tag: DW_TAG_typedef, name: "ti_int", line: 78, file: !14, scope: !4, baseType: !10)

llvm/test/DebugInfo/X86/dbg-merge-loc-entry.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-merge-loc-entry.ll b/llvm/test/DebugInfo/X86/dbg-merge-loc-entry.ll
index de4a2a4..7ce5ceb 100644
--- a/llvm/test/DebugInfo/X86/dbg-merge-loc-entry.ll
+++ b/llvm/test/DebugInfo/X86/dbg-merge-loc-entry.ll
@@ -42,7 +42,7 @@
 
 !0 = !DISubprogram(name: "__udivmodti4", line: 879, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 879, file: !29, scope: !1, type: !3)
 !1 = !DIFile(filename: "foobar.c", directory: "/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !29, enums: !31, retainedTypes: !31, subprograms: !28, imports:  null)
+!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !29, enums: !31, retainedTypes: !31, subprograms: !28, imports:  null)
 !3 = !DISubroutineType(types: !4)
 !4 = !{!5, !5, !5, !8}
 !5 = !DIDerivedType(tag: DW_TAG_typedef, name: "UTItype", line: 166, file: !30, scope: !6, baseType: !7)

llvm/test/DebugInfo/X86/dbg-prolog-end.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-prolog-end.ll b/llvm/test/DebugInfo/X86/dbg-prolog-end.ll
index 4dbeaa3..b2243a0 100644
--- a/llvm/test/DebugInfo/X86/dbg-prolog-end.ll
+++ b/llvm/test/DebugInfo/X86/dbg-prolog-end.ll
@@ -36,7 +36,7 @@
 !llvm.module.flags = !{!21}
 !18 = !{!1, !6}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 131100)", isOptimized: false, emissionKind: 0, file: !19, enums: !20, retainedTypes: !20, subprograms: !18, imports:  null)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 131100)", isOptimized: false, emissionKind: 0, file: !19, enums: !20, retainedTypes: !20, subprograms: !18, imports:  null)
 !1 = !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !19, scope: !2, type: !3, function: i32 (i32)* @foo)
 !2 = !DIFile(filename: "/tmp/a.c", directory: "/private/tmp")
 !3 = !DISubroutineType(types: !4)

llvm/test/DebugInfo/X86/dbg-subrange.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-subrange.ll b/llvm/test/DebugInfo/X86/dbg-subrange.ll
index e3bd073..0e3fb61 100644
--- a/llvm/test/DebugInfo/X86/dbg-subrange.ll
+++ b/llvm/test/DebugInfo/X86/dbg-subrange.ll
@@ -15,7 +15,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!22}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 144833)", isOptimized: false, emissionKind: 0, file: !21, enums: !1, retainedTypes: !1, subprograms: !3, globals: !11, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 144833)", isOptimized: false, emissionKind: 0, file: !21, enums: !1, retainedTypes: !1, subprograms: !3, globals: !11, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "bar", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !21, scope: !6, type: !7, function: void ()* @bar)

llvm/test/DebugInfo/X86/dbg-value-const-byref.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-value-const-byref.ll b/llvm/test/DebugInfo/X86/dbg-value-const-byref.ll
index 05eca6c..14dbfbd 100644
--- a/llvm/test/DebugInfo/X86/dbg-value-const-byref.ll
+++ b/llvm/test/DebugInfo/X86/dbg-value-const-byref.ll
@@ -78,7 +78,7 @@
 !llvm.module.flags = !{!11, !12}
 !llvm.ident = !{!13}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "dbg-value-const-byref.c", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/dbg-value-dag-combine.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-value-dag-combine.ll b/llvm/test/DebugInfo/X86/dbg-value-dag-combine.ll
index e4fcdef..92b89a4 100644
--- a/llvm/test/DebugInfo/X86/dbg-value-dag-combine.ll
+++ b/llvm/test/DebugInfo/X86/dbg-value-dag-combine.ll
@@ -26,7 +26,7 @@
 
 !0 = !DISubprogram(name: "__OpenCL_test_kernel", linkageName: "__OpenCL_test_kernel", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !19, scope: !1, type: !3, function: void (i32 addrspace(1)*)* @__OpenCL_test_kernel)
 !1 = !DIFile(filename: "OCL6368.tmp.cl", directory: "E:CUsersCmvillmow.AMDCAppDataCLocalCTemp")
-!2 = !DICompileUnit(language: DW_LANG_C89, producer: "clc", isOptimized: false, emissionKind: 1, file: !19, enums: !12, retainedTypes: !12, subprograms: !18, imports:  null)
+!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "clc", isOptimized: false, emissionKind: 1, file: !19, enums: !12, retainedTypes: !12, subprograms: !18, imports:  null)
 !3 = !DISubroutineType(types: !4)
 !4 = !{null, !5}
 !5 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !6)

llvm/test/DebugInfo/X86/dbg-value-inlined-parameter.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-value-inlined-parameter.ll b/llvm/test/DebugInfo/X86/dbg-value-inlined-parameter.ll
index f08e94e..e636d7a 100644
--- a/llvm/test/DebugInfo/X86/dbg-value-inlined-parameter.ll
+++ b/llvm/test/DebugInfo/X86/dbg-value-inlined-parameter.ll
@@ -76,7 +76,7 @@
 
 !0 = !DISubprogram(name: "foo", line: 8, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 8, file: !1, scope: !1, type: !3, function: i32 (%struct.S1*, i32)* @foo, variables: !41)
 !1 = !DIFile(filename: "nm2.c", directory: "/private/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 125693)", isOptimized: true, emissionKind: 1, file: !42, enums: !{}, retainedTypes: !{}, subprograms: !39, globals: !40, imports:  !44)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 125693)", isOptimized: true, emissionKind: 1, file: !42, enums: !{}, retainedTypes: !{}, subprograms: !39, globals: !40, imports:  !44)
 !3 = !DISubroutineType(types: !4)
 !4 = !{!5}
 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)

llvm/test/DebugInfo/X86/dbg-value-isel.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-value-isel.ll b/llvm/test/DebugInfo/X86/dbg-value-isel.ll
index 557836b..35b1ca9 100644
--- a/llvm/test/DebugInfo/X86/dbg-value-isel.ll
+++ b/llvm/test/DebugInfo/X86/dbg-value-isel.ll
@@ -83,7 +83,7 @@
 
 !0 = !DISubprogram(name: "__OpenCL_nbt02_kernel", linkageName: "__OpenCL_nbt02_kernel", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !20, scope: !1, type: !3, function: void (i32 addrspace(1)*)* @__OpenCL_nbt02_kernel)
 !1 = !DIFile(filename: "OCLlLwTXZ.cl", directory: "/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C89, producer: "clc", isOptimized: false, emissionKind: 1, file: !20, enums: !21, retainedTypes: !21, subprograms: !19, imports:  null)
+!2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "clc", isOptimized: false, emissionKind: 1, file: !20, enums: !21, retainedTypes: !21, subprograms: !19, imports:  null)
 !3 = !DISubroutineType(types: !4)
 !4 = !{null, !5}
 !5 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !6)

llvm/test/DebugInfo/X86/dbg-value-location.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-value-location.ll b/llvm/test/DebugInfo/X86/dbg-value-location.ll
index e9628e0..1303893 100644
--- a/llvm/test/DebugInfo/X86/dbg-value-location.ll
+++ b/llvm/test/DebugInfo/X86/dbg-value-location.ll
@@ -52,7 +52,7 @@
 
 !0 = !DISubprogram(name: "foo", line: 19510, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 19510, file: !26, scope: !1, type: !3, function: i32 (i32, i64, i8*, i32)* @foo)
 !1 = !DIFile(filename: "/tmp/f.c", directory: "/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 124753)", isOptimized: true, emissionKind: 0, file: !27, enums: !28, retainedTypes: !28, subprograms: !24, imports:  null)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 124753)", isOptimized: true, emissionKind: 0, file: !27, enums: !28, retainedTypes: !28, subprograms: !24, imports:  null)
 !3 = !DISubroutineType(types: !4)
 !4 = !{!5}
 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)

llvm/test/DebugInfo/X86/dbg-value-range.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-value-range.ll b/llvm/test/DebugInfo/X86/dbg-value-range.ll
index da83623..9a9b0cd 100644
--- a/llvm/test/DebugInfo/X86/dbg-value-range.ll
+++ b/llvm/test/DebugInfo/X86/dbg-value-range.ll
@@ -22,7 +22,7 @@
 
 !0 = !DISubprogram(name: "bar", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, file: !22, scope: !1, type: !3, function: i32 (%struct.a*)* @bar, variables: !21)
 !1 = !DIFile(filename: "bar.c", directory: "/private/tmp")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 122997)", isOptimized: true, emissionKind: 1, file: !22, enums: !23, retainedTypes: !23, subprograms: !20, imports:  null)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 2.9 (trunk 122997)", isOptimized: true, emissionKind: 1, file: !22, enums: !23, retainedTypes: !23, subprograms: !20, imports:  null)
 !3 = !DISubroutineType(types: !4)
 !4 = !{!5}
 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)

llvm/test/DebugInfo/X86/dbg-value-terminator.ll

diff --git a/llvm/test/DebugInfo/X86/dbg-value-terminator.ll b/llvm/test/DebugInfo/X86/dbg-value-terminator.ll
index 26da1e6..a36c8b5 100644
--- a/llvm/test/DebugInfo/X86/dbg-value-terminator.ll
+++ b/llvm/test/DebugInfo/X86/dbg-value-terminator.ll
@@ -113,7 +113,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!22}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "Apple clang version", isOptimized: true, emissionKind: 1, file: !20, enums: !21, retainedTypes: !21, subprograms: !18, imports:  null)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "Apple clang version", isOptimized: true, emissionKind: 1, file: !20, enums: !21, retainedTypes: !21, subprograms: !18, imports:  null)
 !1 = !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, file: !20, scope: !2, type: !3, function: %a* ()* @test, variables: !19)
 !2 = !DIFile(filename: "a.c", directory: "/private/tmp")
 !3 = !DISubroutineType(types: !4)

llvm/test/DebugInfo/X86/dbg_value_direct.ll

diff --git a/llvm/test/DebugInfo/X86/dbg_value_direct.ll b/llvm/test/DebugInfo/X86/dbg_value_direct.ll
index dd208a2..34548c4 100644
--- a/llvm/test/DebugInfo/X86/dbg_value_direct.ll
+++ b/llvm/test/DebugInfo/X86/dbg_value_direct.ll
@@ -147,7 +147,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!22, !27}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "crash.cpp", directory: "/tmp")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/debug-dead-local-var.ll

diff --git a/llvm/test/DebugInfo/X86/debug-dead-local-var.ll b/llvm/test/DebugInfo/X86/debug-dead-local-var.ll
index ea8c689..fcf58a9 100644
--- a/llvm/test/DebugInfo/X86/debug-dead-local-var.ll
+++ b/llvm/test/DebugInfo/X86/debug-dead-local-var.ll
@@ -27,7 +27,7 @@
 !llvm.module.flags = !{!18, !19}
 !llvm.ident = !{!20}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (trunk 209255) (llvm/trunk 209253)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (trunk 209255) (llvm/trunk 209253)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "debug-dead-local-var.c", directory: "/usr/local/google/home/echristo")
 !2 = !{}
 !3 = !{!4, !9}

llvm/test/DebugInfo/X86/debug-info-access.ll

diff --git a/llvm/test/DebugInfo/X86/debug-info-access.ll b/llvm/test/DebugInfo/X86/debug-info-access.ll
index 21da7b2..ec7ff37 100644
--- a/llvm/test/DebugInfo/X86/debug-info-access.ll
+++ b/llvm/test/DebugInfo/X86/debug-info-access.ll
@@ -106,7 +106,7 @@
 !llvm.module.flags = !{!38, !39}
 !llvm.ident = !{!40}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !29, globals: !34, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !29, globals: !34, imports: !2)
 !1 = !DIFile(filename: "/llvm/tools/clang/test/CodeGenCXX/debug-info-access.cpp", directory: "")
 !2 = !{}
 !3 = !{!4, !12, !22}

llvm/test/DebugInfo/X86/debug-info-block-captured-self.ll

diff --git a/llvm/test/DebugInfo/X86/debug-info-block-captured-self.ll b/llvm/test/DebugInfo/X86/debug-info-block-captured-self.ll
index c5cb056..0991251b 100644
--- a/llvm/test/DebugInfo/X86/debug-info-block-captured-self.ll
+++ b/llvm/test/DebugInfo/X86/debug-info-block-captured-self.ll
@@ -80,7 +80,7 @@
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!108}
-!0 = !DICompileUnit(language: DW_LANG_ObjC, producer: "clang version 3.3 ", isOptimized: false, runtimeVersion: 2, emissionKind: 0, file: !107, enums: !2, retainedTypes: !4, subprograms: !23, globals: !15, imports:  !15)
+!0 = distinct !DICompileUnit(language: DW_LANG_ObjC, producer: "clang version 3.3 ", isOptimized: false, runtimeVersion: 2, emissionKind: 0, file: !107, enums: !2, retainedTypes: !4, subprograms: !23, globals: !15, imports:  !15)
 !1 = !DIFile(filename: "llvm/tools/clang/test/CodeGenObjC/debug-info-block-captured-self.m", directory: "")
 !2 = !{!3}
 !3 = !DICompositeType(tag: DW_TAG_enumeration_type, line: 20, size: 32, align: 32, file: !107, elements: !4)

llvm/test/DebugInfo/X86/debug-info-blocks.ll

diff --git a/llvm/test/DebugInfo/X86/debug-info-blocks.ll b/llvm/test/DebugInfo/X86/debug-info-blocks.ll
index 4753470..ed17748 100644
--- a/llvm/test/DebugInfo/X86/debug-info-blocks.ll
+++ b/llvm/test/DebugInfo/X86/debug-info-blocks.ll
@@ -270,7 +270,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!56, !57, !58, !59, !110}
 
-!0 = !DICompileUnit(language: DW_LANG_ObjC, producer: "clang version 3.3 ", isOptimized: false, runtimeVersion: 2, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !12, globals: !2, imports:  !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_ObjC, producer: "clang version 3.3 ", isOptimized: false, runtimeVersion: 2, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !12, globals: !2, imports:  !2)
 !1 = !DIFile(filename: "llvm/tools/clang/test/CodeGenObjC/<unknown>", directory: "llvm/_build.ninja.Debug")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/debug-info-packed-struct.ll

diff --git a/llvm/test/DebugInfo/X86/debug-info-packed-struct.ll b/llvm/test/DebugInfo/X86/debug-info-packed-struct.ll
index 6829c2d..50b68a7 100644
--- a/llvm/test/DebugInfo/X86/debug-info-packed-struct.ll
+++ b/llvm/test/DebugInfo/X86/debug-info-packed-struct.ll
@@ -148,7 +148,7 @@
 !llvm.module.flags = !{!45, !46}
 !llvm.ident = !{!47}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 240791) (llvm/trunk 240790)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 240791) (llvm/trunk 240790)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "/llvm/tools/clang/test/CodeGen/<stdin>", directory: "/llvm/_build.ninja.release")
 !2 = !{}
 !3 = !{!4, !18, !25, !35}

llvm/test/DebugInfo/X86/debug-info-static-member.ll

diff --git a/llvm/test/DebugInfo/X86/debug-info-static-member.ll b/llvm/test/DebugInfo/X86/debug-info-static-member.ll
index bd7f634..4ea91aa 100644
--- a/llvm/test/DebugInfo/X86/debug-info-static-member.ll
+++ b/llvm/test/DebugInfo/X86/debug-info-static-member.ll
@@ -59,7 +59,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!34}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 171914)", isOptimized: false, emissionKind: 0, file: !33, enums: !1, retainedTypes: !1, subprograms: !3, globals: !10, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 171914)", isOptimized: false, emissionKind: 0, file: !33, enums: !1, retainedTypes: !1, subprograms: !3, globals: !10, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "main", line: 18, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 23, file: !33, scope: !6, type: !7, function: i32 ()* @main, variables: !1)

llvm/test/DebugInfo/X86/debug-loc-asan.ll

diff --git a/llvm/test/DebugInfo/X86/debug-loc-asan.ll b/llvm/test/DebugInfo/X86/debug-loc-asan.ll
index c187b54e..5f635c1 100644
--- a/llvm/test/DebugInfo/X86/debug-loc-asan.ll
+++ b/llvm/test/DebugInfo/X86/debug-loc-asan.ll
@@ -165,7 +165,7 @@
 !llvm.module.flags = !{!9, !10}
 !llvm.ident = !{!11}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (209308)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (209308)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "test.cc", directory: "/llvm_cmake_gcc")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/debug-loc-empty-entries.ll

diff --git a/llvm/test/DebugInfo/X86/debug-loc-empty-entries.ll b/llvm/test/DebugInfo/X86/debug-loc-empty-entries.ll
index 40dcdce..cca6307 100644
--- a/llvm/test/DebugInfo/X86/debug-loc-empty-entries.ll
+++ b/llvm/test/DebugInfo/X86/debug-loc-empty-entries.ll
@@ -44,7 +44,7 @@
 !llvm.module.flags = !{!11, !12}
 !llvm.ident = !{!13}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 238517) (llvm/trunk 238524)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 238517) (llvm/trunk 238524)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "<stdin>", directory: "/Users/dexonsmith/data/llvm/bootstrap/play/delta2/testcase")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/debug-loc-offset.ll

diff --git a/llvm/test/DebugInfo/X86/debug-loc-offset.ll b/llvm/test/DebugInfo/X86/debug-loc-offset.ll
index f2a5556..f912708 100644
--- a/llvm/test/DebugInfo/X86/debug-loc-offset.ll
+++ b/llvm/test/DebugInfo/X86/debug-loc-offset.ll
@@ -116,7 +116,7 @@
 !llvm.module.flags = !{!18, !19}
 !llvm.ident = !{!20, !20}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (210479)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (210479)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "debug-loc-offset1.cc", directory: "/llvm_cmake_gcc")
 !2 = !{}
 !3 = !{!4}
@@ -125,7 +125,7 @@
 !6 = !DISubroutineType(types: !7)
 !7 = !{!8, !8}
 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!9 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (210479)", isOptimized: false, emissionKind: 1, file: !10, enums: !2, retainedTypes: !11, subprograms: !13, globals: !2, imports: !2)
+!9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (210479)", isOptimized: false, emissionKind: 1, file: !10, enums: !2, retainedTypes: !11, subprograms: !13, globals: !2, imports: !2)
 !10 = !DIFile(filename: "debug-loc-offset2.cc", directory: "/llvm_cmake_gcc")
 !11 = !{!12}
 !12 = !DICompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, flags: DIFlagFwdDecl, file: !10, identifier: "_ZTS1A")

llvm/test/DebugInfo/X86/debug-ranges-offset.ll

diff --git a/llvm/test/DebugInfo/X86/debug-ranges-offset.ll b/llvm/test/DebugInfo/X86/debug-ranges-offset.ll
index 711cca1..45305eb 100644
--- a/llvm/test/DebugInfo/X86/debug-ranges-offset.ll
+++ b/llvm/test/DebugInfo/X86/debug-ranges-offset.ll
@@ -202,7 +202,7 @@
 !llvm.module.flags = !{!16, !17}
 !llvm.ident = !{!18}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (trunk 207243) (llvm/trunk 207259)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (trunk 207243) (llvm/trunk 207259)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "foo.cpp", directory: "/usr/local/google/home/echristo/tmp")
 !2 = !{}
 !3 = !{!4, !13}

llvm/test/DebugInfo/X86/debug_frame.ll

diff --git a/llvm/test/DebugInfo/X86/debug_frame.ll b/llvm/test/DebugInfo/X86/debug_frame.ll
index 48ce554..c6b0e110 100644
--- a/llvm/test/DebugInfo/X86/debug_frame.ll
+++ b/llvm/test/DebugInfo/X86/debug_frame.ll
@@ -15,7 +15,7 @@
 
 !0 = !DISubprogram(name: "f", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !6, scope: !1, type: !3, function: void ()* @f)
 !1 = !DIFile(filename: "/home/espindola/llvm/test.c", directory: "/home/espindola/llvm/build")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 ()", isOptimized: true, emissionKind: 0, file: !6, enums: !{}, retainedTypes: !{}, subprograms: !5)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 ()", isOptimized: true, emissionKind: 0, file: !6, enums: !{}, retainedTypes: !{}, subprograms: !5)
 !3 = !DISubroutineType(types: !4)
 !4 = !{null}
 !6 = !DIFile(filename: "/home/espindola/llvm/test.c", directory: "/home/espindola/llvm/build")

llvm/test/DebugInfo/X86/debugger-tune.ll

diff --git a/llvm/test/DebugInfo/X86/debugger-tune.ll b/llvm/test/DebugInfo/X86/debugger-tune.ll
index 7d862e3..b685612 100644
--- a/llvm/test/DebugInfo/X86/debugger-tune.ll
+++ b/llvm/test/DebugInfo/X86/debugger-tune.ll
@@ -33,7 +33,7 @@
 !llvm.module.flags = !{!6, !7}
 !llvm.ident = !{!8}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 238808)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 238808)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "debugger-tune.cpp", directory: "/home/probinson/projects/scratch")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/decl-derived-member.ll

diff --git a/llvm/test/DebugInfo/X86/decl-derived-member.ll b/llvm/test/DebugInfo/X86/decl-derived-member.ll
index 0dffcb5..98ae28c 100644
--- a/llvm/test/DebugInfo/X86/decl-derived-member.ll
+++ b/llvm/test/DebugInfo/X86/decl-derived-member.ll
@@ -100,7 +100,7 @@
 !llvm.module.flags = !{!30, !31}
 !llvm.ident = !{!32}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 (trunk 227104) (llvm/trunk 227103)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !9, globals: !28, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 (trunk 227104) (llvm/trunk 227103)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !9, globals: !28, imports: !2)
 !1 = !DIFile(filename: "decl-derived-member.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4, !8}

llvm/test/DebugInfo/X86/deleted-bit-piece.ll

diff --git a/llvm/test/DebugInfo/X86/deleted-bit-piece.ll b/llvm/test/DebugInfo/X86/deleted-bit-piece.ll
index 1ee8a08..483e024 100644
--- a/llvm/test/DebugInfo/X86/deleted-bit-piece.ll
+++ b/llvm/test/DebugInfo/X86/deleted-bit-piece.ll
@@ -28,7 +28,7 @@
 
 !0 = !{i32 2, !"Dwarf Version", i32 2}
 !1 = !{i32 2, !"Debug Info Version", i32 3}
-!2 = !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !4, retainedTypes: !5, subprograms: !11, globals: !4, imports: !4)
+!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !4, retainedTypes: !5, subprograms: !11, globals: !4, imports: !4)
 !3 = !DIFile(filename: "foo.cpp", directory: "/path/to/dir")
 !4 = !{}
 !5 = !{!6}

llvm/test/DebugInfo/X86/discriminator.ll

diff --git a/llvm/test/DebugInfo/X86/discriminator.ll b/llvm/test/DebugInfo/X86/discriminator.ll
index da5acc7..5350462 100644
--- a/llvm/test/DebugInfo/X86/discriminator.ll
+++ b/llvm/test/DebugInfo/X86/discriminator.ll
@@ -41,7 +41,7 @@
 !llvm.module.flags = !{!7, !8}
 !llvm.ident = !{!9}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "discriminator.c", directory: ".")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/dwarf-aranges-no-dwarf-labels.ll

diff --git a/llvm/test/DebugInfo/X86/dwarf-aranges-no-dwarf-labels.ll b/llvm/test/DebugInfo/X86/dwarf-aranges-no-dwarf-labels.ll
index 1cde07a..da8da98 100644
--- a/llvm/test/DebugInfo/X86/dwarf-aranges-no-dwarf-labels.ll
+++ b/llvm/test/DebugInfo/X86/dwarf-aranges-no-dwarf-labels.ll
@@ -60,7 +60,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!19, !26}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (191881)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !17, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (191881)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !17, imports: !2)
 !1 = !DIFile(filename: "tmp/debug_ranges/a.cc", directory: "/")
 !2 = !{}
 !3 = !{!4, !11, !14}

llvm/test/DebugInfo/X86/dwarf-aranges.ll

diff --git a/llvm/test/DebugInfo/X86/dwarf-aranges.ll b/llvm/test/DebugInfo/X86/dwarf-aranges.ll
index 9924697..d5e4ccf 100644
--- a/llvm/test/DebugInfo/X86/dwarf-aranges.ll
+++ b/llvm/test/DebugInfo/X86/dwarf-aranges.ll
@@ -62,7 +62,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!13, !16}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !8, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !8, imports: !2)
 !1 = !DIFile(filename: "test.c", directory: "/home/kayamon")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/dwarf-public-names.ll

diff --git a/llvm/test/DebugInfo/X86/dwarf-public-names.ll b/llvm/test/DebugInfo/X86/dwarf-public-names.ll
index 4458d04..50f6417 100644
--- a/llvm/test/DebugInfo/X86/dwarf-public-names.ll
+++ b/llvm/test/DebugInfo/X86/dwarf-public-names.ll
@@ -96,7 +96,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!38}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (http://llvm.org/git/clang.git a09cd8103a6a719cb2628cdf0c91682250a17bd2) (http://llvm.org/git/llvm.git 47d03cec0afca0c01ae42b82916d1d731716cd20)", isOptimized: false, emissionKind: 0, file: !37, enums: !1, retainedTypes: !1, subprograms: !2, globals: !24, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (http://llvm.org/git/clang.git a09cd8103a6a719cb2628cdf0c91682250a17bd2) (http://llvm.org/git/llvm.git 47d03cec0afca0c01ae42b82916d1d731716cd20)", isOptimized: false, emissionKind: 0, file: !37, enums: !1, retainedTypes: !1, subprograms: !2, globals: !24, imports:  !1)
 !1 = !{}
 !2 = !{!3, !18, !19, !20}
 !3 = !DISubprogram(name: "member_function", linkageName: "_ZN1C15member_functionEv", line: 9, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 9, file: !4, scope: null, type: !5, function: void (%struct.C*)* @_ZN1C15member_functionEv, declaration: !12, variables: !1)

llvm/test/DebugInfo/X86/dwarf-pubnames-split.ll

diff --git a/llvm/test/DebugInfo/X86/dwarf-pubnames-split.ll b/llvm/test/DebugInfo/X86/dwarf-pubnames-split.ll
index f17f784..c55c782 100644
--- a/llvm/test/DebugInfo/X86/dwarf-pubnames-split.ll
+++ b/llvm/test/DebugInfo/X86/dwarf-pubnames-split.ll
@@ -24,7 +24,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9, !11}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 189287) (llvm/trunk 189296)", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 189287) (llvm/trunk 189296)", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "foo.c", directory: "/usr/local/google/home/echristo/tmp")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/earlydup-crash.ll

diff --git a/llvm/test/DebugInfo/X86/earlydup-crash.ll b/llvm/test/DebugInfo/X86/earlydup-crash.ll
index 99f5603..281cac2 100644
--- a/llvm/test/DebugInfo/X86/earlydup-crash.ll
+++ b/llvm/test/DebugInfo/X86/earlydup-crash.ll
@@ -48,7 +48,7 @@
 !1 = distinct !DILexicalBlock(line: 515, column: 0, file: !44, scope: !2)
 !2 = !DISubprogram(name: "framework_construct_pathname", line: 515, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, file: !44, scope: null, type: !5, function: i8* (i8*, %struct.cpp_dir*)* @framework_construct_pathname)
 !3 = !DIFile(filename: "darwin-c.c", directory: "/Users/espindola/llvm/build-llvm-gcc/gcc/../../llvm-gcc-4.2/gcc/config")
-!4 = !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !44, enums: !46, retainedTypes: !46, subprograms: !45)
+!4 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: 0, file: !44, enums: !46, retainedTypes: !46, subprograms: !45)
 !5 = !DISubroutineType(types: !6)
 !6 = !{!7, !9, !11}
 !7 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !44, scope: !3, baseType: !8)

llvm/test/DebugInfo/X86/elf-names.ll

diff --git a/llvm/test/DebugInfo/X86/elf-names.ll b/llvm/test/DebugInfo/X86/elf-names.ll
index b2d1882..a0fe84b 100644
--- a/llvm/test/DebugInfo/X86/elf-names.ll
+++ b/llvm/test/DebugInfo/X86/elf-names.ll
@@ -62,7 +62,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!54}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 167506) (llvm/trunk 167505)", isOptimized: true, emissionKind: 0, file: !53, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 167506) (llvm/trunk 167505)", isOptimized: true, emissionKind: 0, file: !53, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5, !31}
 !5 = !DISubprogram(name: "D", linkageName: "_ZN1DC2Ev", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 12, file: !6, scope: null, type: !7, function: void (%class.D*)* @_ZN1DC2Ev, declaration: !17, variables: !27)

llvm/test/DebugInfo/X86/empty-and-one-elem-array.ll

diff --git a/llvm/test/DebugInfo/X86/empty-and-one-elem-array.ll b/llvm/test/DebugInfo/X86/empty-and-one-elem-array.ll
index 4ad9d9c..903a6ac 100644
--- a/llvm/test/DebugInfo/X86/empty-and-one-elem-array.ll
+++ b/llvm/test/DebugInfo/X86/empty-and-one-elem-array.ll
@@ -63,7 +63,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!33}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: 0, file: !32, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: 0, file: !32, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "func", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 11, file: !6, scope: !6, type: !7, function: i32 ()* @func, variables: !1)

llvm/test/DebugInfo/X86/empty-array.ll

diff --git a/llvm/test/DebugInfo/X86/empty-array.ll b/llvm/test/DebugInfo/X86/empty-array.ll
index ce460a7..bad080c 100644
--- a/llvm/test/DebugInfo/X86/empty-array.ll
+++ b/llvm/test/DebugInfo/X86/empty-array.ll
@@ -27,7 +27,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!21}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: 0, file: !20, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: 0, file: !20, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: %class.A* @a)

llvm/test/DebugInfo/X86/empty.ll

diff --git a/llvm/test/DebugInfo/X86/empty.ll b/llvm/test/DebugInfo/X86/empty.ll
index 1f48a2f..695e9ca 100644
--- a/llvm/test/DebugInfo/X86/empty.ll
+++ b/llvm/test/DebugInfo/X86/empty.ll
@@ -19,7 +19,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!5}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 143523)", isOptimized: true, emissionKind: 0, file: !4, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 143523)", isOptimized: true, emissionKind: 0, file: !4, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2)
 !2 = !{}
 !3 = !DIFile(filename: "empty.c", directory: "/home/nlewycky")
 !4 = !DIFile(filename: "empty.c", directory: "/home/nlewycky")

llvm/test/DebugInfo/X86/ending-run.ll

diff --git a/llvm/test/DebugInfo/X86/ending-run.ll b/llvm/test/DebugInfo/X86/ending-run.ll
index 60c395f..063b46c 100644
--- a/llvm/test/DebugInfo/X86/ending-run.ll
+++ b/llvm/test/DebugInfo/X86/ending-run.ll
@@ -29,7 +29,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!20}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 153921) (llvm/trunk 153916)", isOptimized: false, emissionKind: 0, file: !19, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 153921) (llvm/trunk 153916)", isOptimized: false, emissionKind: 0, file: !19, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "callee", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 7, file: !19, scope: !6, type: !7, function: i32 (i32)* @callee)

llvm/test/DebugInfo/X86/enum-class.ll

diff --git a/llvm/test/DebugInfo/X86/enum-class.ll b/llvm/test/DebugInfo/X86/enum-class.ll
index 57b2aa4..fda0b49 100644
--- a/llvm/test/DebugInfo/X86/enum-class.ll
+++ b/llvm/test/DebugInfo/X86/enum-class.ll
@@ -8,7 +8,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!23}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 157269) (llvm/trunk 157264)", isOptimized: false, emissionKind: 0, file: !22, enums: !1, retainedTypes: !15, subprograms: !15, globals: !17, imports:  !15)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 157269) (llvm/trunk 157264)", isOptimized: false, emissionKind: 0, file: !22, enums: !1, retainedTypes: !15, subprograms: !15, globals: !17, imports:  !15)
 !1 = !{!3, !8, !12}
 !3 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "A", line: 1, size: 32, align: 32, file: !4, baseType: !5, elements: !6)
 !4 = !DIFile(filename: "foo.cpp", directory: "/Users/echristo/tmp")

llvm/test/DebugInfo/X86/enum-fwd-decl.ll

diff --git a/llvm/test/DebugInfo/X86/enum-fwd-decl.ll b/llvm/test/DebugInfo/X86/enum-fwd-decl.ll
index f5deeb7..ec862d1 100644
--- a/llvm/test/DebugInfo/X86/enum-fwd-decl.ll
+++ b/llvm/test/DebugInfo/X86/enum-fwd-decl.ll
@@ -6,7 +6,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 165274) (llvm/trunk 165272)", isOptimized: false, emissionKind: 0, file: !8, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 165274) (llvm/trunk 165272)", isOptimized: false, emissionKind: 0, file: !8, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DIGlobalVariable(name: "e", line: 2, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: i16* @e)

llvm/test/DebugInfo/X86/fission-cu.ll

diff --git a/llvm/test/DebugInfo/X86/fission-cu.ll b/llvm/test/DebugInfo/X86/fission-cu.ll
index 493f842..d52333c 100644
--- a/llvm/test/DebugInfo/X86/fission-cu.ll
+++ b/llvm/test/DebugInfo/X86/fission-cu.ll
@@ -8,7 +8,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 169021) (llvm/trunk 169020)", isOptimized: false, splitDebugFilename: "baz.dwo", emissionKind: 0, file: !8, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 169021) (llvm/trunk 169020)", isOptimized: false, splitDebugFilename: "baz.dwo", emissionKind: 0, file: !8, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: i32* @a)

llvm/test/DebugInfo/X86/fission-hash.ll

diff --git a/llvm/test/DebugInfo/X86/fission-hash.ll b/llvm/test/DebugInfo/X86/fission-hash.ll
index 7476441..84568a9 100644
--- a/llvm/test/DebugInfo/X86/fission-hash.ll
+++ b/llvm/test/DebugInfo/X86/fission-hash.ll
@@ -9,7 +9,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!3, !4}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 188230) (llvm/trunk 188234)", isOptimized: false, splitDebugFilename: "foo.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 188230) (llvm/trunk 188234)", isOptimized: false, splitDebugFilename: "foo.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2, imports: !2)
 !1 = !DIFile(filename: "foo.c", directory: "/usr/local/google/home/echristo/tmp")
 !2 = !{}
 !3 = !{i32 2, !"Dwarf Version", i32 3}

llvm/test/DebugInfo/X86/fission-inline.ll

diff --git a/llvm/test/DebugInfo/X86/fission-inline.ll b/llvm/test/DebugInfo/X86/fission-inline.ll
index 53e7827..9d41cab 100644
--- a/llvm/test/DebugInfo/X86/fission-inline.ll
+++ b/llvm/test/DebugInfo/X86/fission-inline.ll
@@ -92,7 +92,7 @@
 !llvm.module.flags = !{!22, !23}
 !llvm.ident = !{!24}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, splitDebugFilename: "fission-inline.dwo", emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !9, globals: !2, imports: !18)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, splitDebugFilename: "fission-inline.dwo", emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !9, globals: !2, imports: !18)
 !1 = !DIFile(filename: "fission-inline.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/fission-ranges.ll

diff --git a/llvm/test/DebugInfo/X86/fission-ranges.ll b/llvm/test/DebugInfo/X86/fission-ranges.ll
index 8ad4786..2cb4786 100644
--- a/llvm/test/DebugInfo/X86/fission-ranges.ll
+++ b/llvm/test/DebugInfo/X86/fission-ranges.ll
@@ -153,7 +153,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!26, !43}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 191700) (llvm/trunk 191710)", isOptimized: true, splitDebugFilename: "small.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 191700) (llvm/trunk 191710)", isOptimized: true, splitDebugFilename: "small.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "small.c", directory: "/usr/local/google/home/echristo/tmp")
 !2 = !{}
 !3 = !{!4, !8}

llvm/test/DebugInfo/X86/float_const.ll

diff --git a/llvm/test/DebugInfo/X86/float_const.ll b/llvm/test/DebugInfo/X86/float_const.ll
index 982aaa3..b2221ac 100644
--- a/llvm/test/DebugInfo/X86/float_const.ll
+++ b/llvm/test/DebugInfo/X86/float_const.ll
@@ -31,7 +31,7 @@
 !llvm.module.flags = !{!15, !16, !17}
 !llvm.ident = !{!18}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 (trunk 227686)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !6, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 (trunk 227686)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !6, globals: !2, imports: !2)
 !1 = !DIFile(filename: "foo.c", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/formal_parameter.ll

diff --git a/llvm/test/DebugInfo/X86/formal_parameter.ll b/llvm/test/DebugInfo/X86/formal_parameter.ll
index 3b833d1..6db47fe 100644
--- a/llvm/test/DebugInfo/X86/formal_parameter.ll
+++ b/llvm/test/DebugInfo/X86/formal_parameter.ll
@@ -59,7 +59,7 @@
 !llvm.module.flags = !{!11, !12}
 !llvm.ident = !{!13}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "formal_parameter.c", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/frame-register.ll

diff --git a/llvm/test/DebugInfo/X86/frame-register.ll b/llvm/test/DebugInfo/X86/frame-register.ll
index d5fed1f..a860ebc 100644
--- a/llvm/test/DebugInfo/X86/frame-register.ll
+++ b/llvm/test/DebugInfo/X86/frame-register.ll
@@ -33,7 +33,7 @@
 !llvm.module.flags = !{!12, !13}
 !llvm.ident = !{!14}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "x.c", directory: "")
 !2 = !{}
 !3 = !{!4, !9}

llvm/test/DebugInfo/X86/generate-odr-hash.ll

diff --git a/llvm/test/DebugInfo/X86/generate-odr-hash.ll b/llvm/test/DebugInfo/X86/generate-odr-hash.ll
index 293c92a..4cdc043 100644
--- a/llvm/test/DebugInfo/X86/generate-odr-hash.ll
+++ b/llvm/test/DebugInfo/X86/generate-odr-hash.ll
@@ -219,7 +219,7 @@
 !llvm.module.flags = !{!43, !44}
 !llvm.ident = !{!45}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 ", isOptimized: false, splitDebugFilename: "bar.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !21, globals: !38, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 ", isOptimized: false, splitDebugFilename: "bar.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !21, globals: !38, imports: !2)
 !1 = !DIFile(filename: "bar.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4, !6, !14, !17}

llvm/test/DebugInfo/X86/ghost-sdnode-dbgvalues.ll

diff --git a/llvm/test/DebugInfo/X86/ghost-sdnode-dbgvalues.ll b/llvm/test/DebugInfo/X86/ghost-sdnode-dbgvalues.ll
index d080603..c25c086 100644
--- a/llvm/test/DebugInfo/X86/ghost-sdnode-dbgvalues.ll
+++ b/llvm/test/DebugInfo/X86/ghost-sdnode-dbgvalues.ll
@@ -68,7 +68,7 @@
 !llvm.module.flags = !{!13, !14}
 !llvm.ident = !{!15}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !7, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !7, globals: !2, imports: !2)
 !1 = !DIFile(filename: "ghost-sdnode-dbgvalues.c", directory: "/tmp")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/gnu-public-names-empty.ll

diff --git a/llvm/test/DebugInfo/X86/gnu-public-names-empty.ll b/llvm/test/DebugInfo/X86/gnu-public-names-empty.ll
index d87d8ef..4bd33df 100644
--- a/llvm/test/DebugInfo/X86/gnu-public-names-empty.ll
+++ b/llvm/test/DebugInfo/X86/gnu-public-names-empty.ll
@@ -12,7 +12,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!3, !4}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 191846) (llvm/trunk 191866)", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 191846) (llvm/trunk 191866)", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2, imports: !2)
 !1 = !DIFile(filename: "foo.c", directory: "/usr/local/google/home/echristo/tmp")
 !2 = !{}
 !3 = !{i32 2, !"Dwarf Version", i32 4}

llvm/test/DebugInfo/X86/gnu-public-names.ll

diff --git a/llvm/test/DebugInfo/X86/gnu-public-names.ll b/llvm/test/DebugInfo/X86/gnu-public-names.ll
index ab67037..71e9691 100644
--- a/llvm/test/DebugInfo/X86/gnu-public-names.ll
+++ b/llvm/test/DebugInfo/X86/gnu-public-names.ll
@@ -300,7 +300,7 @@
 !llvm.module.flags = !{!48, !49}
 !llvm.ident = !{!50}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 234897) (llvm/trunk 234911)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !3, subprograms: !19, globals: !31, imports: !44)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 234897) (llvm/trunk 234911)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !3, subprograms: !19, globals: !31, imports: !44)
 !1 = !DIFile(filename: "gnu-public-names.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4, !15}

llvm/test/DebugInfo/X86/header.ll

diff --git a/llvm/test/DebugInfo/X86/header.ll b/llvm/test/DebugInfo/X86/header.ll
index 8575c4a..ba99f91 100644
--- a/llvm/test/DebugInfo/X86/header.ll
+++ b/llvm/test/DebugInfo/X86/header.ll
@@ -17,7 +17,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!7, !8}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "foo", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "foo", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "/foo/test.c", directory: "/foo")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/inline-member-function.ll

diff --git a/llvm/test/DebugInfo/X86/inline-member-function.ll b/llvm/test/DebugInfo/X86/inline-member-function.ll
index ee2047e..b970c2e 100644
--- a/llvm/test/DebugInfo/X86/inline-member-function.ll
+++ b/llvm/test/DebugInfo/X86/inline-member-function.ll
@@ -65,7 +65,7 @@
 !llvm.module.flags = !{!20, !21}
 !llvm.ident = !{!22}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !12, globals: !18, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !12, globals: !18, imports: !2)
 !1 = !DIFile(filename: "inline.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/inline-seldag-test.ll

diff --git a/llvm/test/DebugInfo/X86/inline-seldag-test.ll b/llvm/test/DebugInfo/X86/inline-seldag-test.ll
index be06aea..6acadbe 100644
--- a/llvm/test/DebugInfo/X86/inline-seldag-test.ll
+++ b/llvm/test/DebugInfo/X86/inline-seldag-test.ll
@@ -48,7 +48,7 @@
 !llvm.module.flags = !{!12, !13}
 !llvm.ident = !{!14}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "inline-seldag-test.c", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4, !8}

llvm/test/DebugInfo/X86/inlined-formal-parameter.ll

diff --git a/llvm/test/DebugInfo/X86/inlined-formal-parameter.ll b/llvm/test/DebugInfo/X86/inlined-formal-parameter.ll
index 6a5274a..13fd44b 100644
--- a/llvm/test/DebugInfo/X86/inlined-formal-parameter.ll
+++ b/llvm/test/DebugInfo/X86/inlined-formal-parameter.ll
@@ -48,7 +48,7 @@
 !llvm.module.flags = !{!13, !14, !15}
 !llvm.ident = !{!16}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 235110) (llvm/trunk 235108)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 235110) (llvm/trunk 235108)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "t.c", directory: "/path/to/dir")
 !2 = !{}
 !3 = !{!4, !7}

llvm/test/DebugInfo/X86/inlined-indirect-value.ll

diff --git a/llvm/test/DebugInfo/X86/inlined-indirect-value.ll b/llvm/test/DebugInfo/X86/inlined-indirect-value.ll
index 7f95691f..562bf23 100644
--- a/llvm/test/DebugInfo/X86/inlined-indirect-value.ll
+++ b/llvm/test/DebugInfo/X86/inlined-indirect-value.ll
@@ -49,7 +49,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!13, !14}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !9, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !9, imports: !2)
 !1 = !DIFile(filename: "inline-break.c", directory: "/build/dir")
 !2 = !{}
 !3 = !{!4, !8}

llvm/test/DebugInfo/X86/instcombine-instrinsics.ll

diff --git a/llvm/test/DebugInfo/X86/instcombine-instrinsics.ll b/llvm/test/DebugInfo/X86/instcombine-instrinsics.ll
index eeafca8..fce8749 100644
--- a/llvm/test/DebugInfo/X86/instcombine-instrinsics.ll
+++ b/llvm/test/DebugInfo/X86/instcombine-instrinsics.ll
@@ -54,7 +54,7 @@
 !llvm.module.flags = !{!8, !9}
 !llvm.ident = !{!10}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "instcombine_intrinsics.c", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/lexical_block.ll

diff --git a/llvm/test/DebugInfo/X86/lexical_block.ll b/llvm/test/DebugInfo/X86/lexical_block.ll
index 5af8b75..6388ddb 100644
--- a/llvm/test/DebugInfo/X86/lexical_block.ll
+++ b/llvm/test/DebugInfo/X86/lexical_block.ll
@@ -48,7 +48,7 @@
 !llvm.module.flags = !{!8, !9}
 !llvm.ident = !{!10}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "lexical_block.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/line-info.ll

diff --git a/llvm/test/DebugInfo/X86/line-info.ll b/llvm/test/DebugInfo/X86/line-info.ll
index cd0f40e..2ce8511 100644
--- a/llvm/test/DebugInfo/X86/line-info.ll
+++ b/llvm/test/DebugInfo/X86/line-info.ll
@@ -38,7 +38,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!19}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports:  !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports:  !2)
 !1 = !DIFile(filename: "list0.c", directory: "/usr/local/google/home/blaikie/dev/scratch")
 !2 = !{}
 !3 = !{!4, !10}

llvm/test/DebugInfo/X86/linkage-name.ll

diff --git a/llvm/test/DebugInfo/X86/linkage-name.ll b/llvm/test/DebugInfo/X86/linkage-name.ll
index 83914a4..f0ebd64 100644
--- a/llvm/test/DebugInfo/X86/linkage-name.ll
+++ b/llvm/test/DebugInfo/X86/linkage-name.ll
@@ -27,7 +27,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!29}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 152691) (llvm/trunk 152692)", isOptimized: false, emissionKind: 0, file: !28, enums: !1, retainedTypes: !1, subprograms: !3, globals: !18, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 152691) (llvm/trunk 152692)", isOptimized: false, emissionKind: 0, file: !28, enums: !1, retainedTypes: !1, subprograms: !3, globals: !18, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "a", linkageName: "_ZN1A1aEi", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !6, scope: null, type: !7, function: i32 (%class.A*, i32)* @_ZN1A1aEi, declaration: !13)

llvm/test/DebugInfo/X86/low-pc-cu.ll

diff --git a/llvm/test/DebugInfo/X86/low-pc-cu.ll b/llvm/test/DebugInfo/X86/low-pc-cu.ll
index 727a7bb..2e8cc23 100644
--- a/llvm/test/DebugInfo/X86/low-pc-cu.ll
+++ b/llvm/test/DebugInfo/X86/low-pc-cu.ll
@@ -32,7 +32,7 @@
 !llvm.module.flags = !{!8, !9}
 !llvm.ident = !{!10}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (trunk 204164) (llvm/trunk 204183)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (trunk 204164) (llvm/trunk 204183)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "z.c", directory: "/usr/local/google/home/echristo")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/memberfnptr.ll

diff --git a/llvm/test/DebugInfo/X86/memberfnptr.ll b/llvm/test/DebugInfo/X86/memberfnptr.ll
index a53264d..9b1c57d 100644
--- a/llvm/test/DebugInfo/X86/memberfnptr.ll
+++ b/llvm/test/DebugInfo/X86/memberfnptr.ll
@@ -24,7 +24,7 @@
 !llvm.module.flags = !{!14, !15, !16}
 !llvm.ident = !{!17}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !2, globals: !10, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !2, globals: !10, imports: !2)
 !1 = !DIFile(filename: "memberfnptr.cpp", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/mi-print.ll

diff --git a/llvm/test/DebugInfo/X86/mi-print.ll b/llvm/test/DebugInfo/X86/mi-print.ll
index 28df8e8..bafc6f2 100644
--- a/llvm/test/DebugInfo/X86/mi-print.ll
+++ b/llvm/test/DebugInfo/X86/mi-print.ll
@@ -31,7 +31,7 @@
 !llvm.module.flags = !{!13, !14, !15}
 !llvm.ident = !{!16}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 233919) (llvm/trunk 233920)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 233919) (llvm/trunk 233920)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "t.c", directory: "/Users/dexonsmith/data/llvm/debug-info/test/DebugInfo/X86")
 !2 = !{}
 !3 = !{!4, !10}

llvm/test/DebugInfo/X86/misched-dbg-value.ll

diff --git a/llvm/test/DebugInfo/X86/misched-dbg-value.ll b/llvm/test/DebugInfo/X86/misched-dbg-value.ll
index 28a8990..3d726b6 100644
--- a/llvm/test/DebugInfo/X86/misched-dbg-value.ll
+++ b/llvm/test/DebugInfo/X86/misched-dbg-value.ll
@@ -103,7 +103,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!83}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 175015)", isOptimized: true, emissionKind: 1, file: !82, enums: !1, retainedTypes: !10, subprograms: !11, globals: !29, imports:  !10)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 175015)", isOptimized: true, emissionKind: 1, file: !82, enums: !1, retainedTypes: !10, subprograms: !11, globals: !29, imports:  !10)
 !1 = !{!2}
 !2 = !DICompositeType(tag: DW_TAG_enumeration_type, line: 128, size: 32, align: 32, file: !82, elements: !4)
 !3 = !DIFile(filename: "dry.c", directory: "/Users/manmanren/test-Nov/rdar_13183203/test2")

llvm/test/DebugInfo/X86/missing-file-line.ll

diff --git a/llvm/test/DebugInfo/X86/missing-file-line.ll b/llvm/test/DebugInfo/X86/missing-file-line.ll
index d98a0a8..4645fc7 100644
--- a/llvm/test/DebugInfo/X86/missing-file-line.ll
+++ b/llvm/test/DebugInfo/X86/missing-file-line.ll
@@ -36,7 +36,7 @@
 !llvm.module.flags = !{!7, !8}
 !llvm.ident = !{!9}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "file.c", directory: "/dir")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/multiple-aranges.ll

diff --git a/llvm/test/DebugInfo/X86/multiple-aranges.ll b/llvm/test/DebugInfo/X86/multiple-aranges.ll
index 571454b..17a475d 100644
--- a/llvm/test/DebugInfo/X86/multiple-aranges.ll
+++ b/llvm/test/DebugInfo/X86/multiple-aranges.ll
@@ -44,14 +44,14 @@
 !llvm.dbg.cu = !{!0, !7}
 !llvm.module.flags = !{!12, !13}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !2, globals: !3, imports: !2)
 !1 = !DIFile(filename: "test1.c", directory: "/home/kayamon")
 !2 = !{}
 !3 = !{!4}
 !4 = !DIGlobalVariable(name: "kittens", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !6, variable: i32* @kittens)
 !5 = !DIFile(filename: "test1.c", directory: "/home/kayamon")
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!7 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !8, enums: !2, retainedTypes: !2, subprograms: !2, globals: !9, imports: !2)
+!7 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !8, enums: !2, retainedTypes: !2, subprograms: !2, globals: !9, imports: !2)
 !8 = !DIFile(filename: "test2.c", directory: "/home/kayamon")
 !9 = !{!10}
 !10 = !DIGlobalVariable(name: "rainbows", line: 1, isLocal: false, isDefinition: true, scope: null, file: !11, type: !6, variable: i32* @rainbows)

llvm/test/DebugInfo/X86/multiple-at-const-val.ll

diff --git a/llvm/test/DebugInfo/X86/multiple-at-const-val.ll b/llvm/test/DebugInfo/X86/multiple-at-const-val.ll
index 01e3af2..624e64f 100644
--- a/llvm/test/DebugInfo/X86/multiple-at-const-val.ll
+++ b/llvm/test/DebugInfo/X86/multiple-at-const-val.ll
@@ -32,7 +32,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!1803}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 174207)", isOptimized: true, emissionKind: 0, file: !1802, enums: !1, retainedTypes: !955, subprograms: !956, globals: !1786, imports:  !955)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 174207)", isOptimized: true, emissionKind: 0, file: !1802, enums: !1, retainedTypes: !955, subprograms: !956, globals: !1786, imports:  !955)
 !1 = !{!26}
 !4 = !DINamespace(name: "std", line: 48, scope: !5)
 !5 = !DIFile(filename: "os_base.h", directory: "/privite/tmp")

llvm/test/DebugInfo/X86/nodebug_with_debug_loc.ll

diff --git a/llvm/test/DebugInfo/X86/nodebug_with_debug_loc.ll b/llvm/test/DebugInfo/X86/nodebug_with_debug_loc.ll
index 334c68d..c5bcaf4 100644
--- a/llvm/test/DebugInfo/X86/nodebug_with_debug_loc.ll
+++ b/llvm/test/DebugInfo/X86/nodebug_with_debug_loc.ll
@@ -97,7 +97,7 @@
 !llvm.module.flags = !{!23, !24}
 !llvm.ident = !{!25}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !10, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !10, globals: !2, imports: !2)
 !1 = !DIFile(filename: "<stdin>", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/nondefault-subrange-array.ll

diff --git a/llvm/test/DebugInfo/X86/nondefault-subrange-array.ll b/llvm/test/DebugInfo/X86/nondefault-subrange-array.ll
index 20406cf..fc82fa5 100644
--- a/llvm/test/DebugInfo/X86/nondefault-subrange-array.ll
+++ b/llvm/test/DebugInfo/X86/nondefault-subrange-array.ll
@@ -30,7 +30,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!21}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: 0, file: !20, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 169136)", isOptimized: false, emissionKind: 0, file: !20, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: %class.A* @a)

llvm/test/DebugInfo/X86/nophysreg.ll

diff --git a/llvm/test/DebugInfo/X86/nophysreg.ll b/llvm/test/DebugInfo/X86/nophysreg.ll
index b1d3733..05ade56 100644
--- a/llvm/test/DebugInfo/X86/nophysreg.ll
+++ b/llvm/test/DebugInfo/X86/nophysreg.ll
@@ -136,7 +136,7 @@
 !llvm.module.flags = !{!29, !30, !31}
 !llvm.ident = !{!32}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 (trunk 227088) (llvm/trunk 227091)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !10, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 (trunk 227088) (llvm/trunk 227091)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !10, globals: !2, imports: !2)
 !1 = !DIFile(filename: "test.cpp", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/objc-fwd-decl.ll

diff --git a/llvm/test/DebugInfo/X86/objc-fwd-decl.ll b/llvm/test/DebugInfo/X86/objc-fwd-decl.ll
index 5b0aca5..30024dc 100644
--- a/llvm/test/DebugInfo/X86/objc-fwd-decl.ll
+++ b/llvm/test/DebugInfo/X86/objc-fwd-decl.ll
@@ -12,7 +12,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9, !10, !11, !12, !14}
 
-!0 = !DICompileUnit(language: DW_LANG_ObjC, producer: "clang version 3.1 (trunk 152054 trunk 152094)", isOptimized: false, runtimeVersion: 2, emissionKind: 0, file: !13, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_ObjC, producer: "clang version 3.1 (trunk 152054 trunk 152094)", isOptimized: false, runtimeVersion: 2, emissionKind: 0, file: !13, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DIGlobalVariable(name: "a", line: 3, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: %0** @a)

llvm/test/DebugInfo/X86/objc-property-void.ll

diff --git a/llvm/test/DebugInfo/X86/objc-property-void.ll b/llvm/test/DebugInfo/X86/objc-property-void.ll
index 45d3512..4ef9735a 100644
--- a/llvm/test/DebugInfo/X86/objc-property-void.ll
+++ b/llvm/test/DebugInfo/X86/objc-property-void.ll
@@ -72,7 +72,7 @@
 !llvm.module.flags = !{!17, !18, !19, !20, !21, !22}
 !llvm.ident = !{!23}
 
-!0 = !DICompileUnit(language: DW_LANG_ObjC, isOptimized: false, runtimeVersion: 2, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !9, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_ObjC, isOptimized: false, runtimeVersion: 2, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !9, globals: !2, imports: !2)
 !1 = !DIFile(filename: "-", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/op_deref.ll

diff --git a/llvm/test/DebugInfo/X86/op_deref.ll b/llvm/test/DebugInfo/X86/op_deref.ll
index 09200a6..db51a1d 100644
--- a/llvm/test/DebugInfo/X86/op_deref.ll
+++ b/llvm/test/DebugInfo/X86/op_deref.ll
@@ -80,7 +80,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!29}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 156005) (llvm/trunk 156000)", isOptimized: false, emissionKind: 1, file: !28, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 156005) (llvm/trunk 156000)", isOptimized: false, emissionKind: 1, file: !28, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "testVLAwithSize", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !28, scope: !6, type: !7, function: void (i32)* @testVLAwithSize, variables: !1)

llvm/test/DebugInfo/X86/parameters.ll

diff --git a/llvm/test/DebugInfo/X86/parameters.ll b/llvm/test/DebugInfo/X86/parameters.ll
index b351786..02ea6b3 100644
--- a/llvm/test/DebugInfo/X86/parameters.ll
+++ b/llvm/test/DebugInfo/X86/parameters.ll
@@ -82,7 +82,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!21, !33}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "pass.cpp", directory: "/tmp")
 !2 = !{}
 !3 = !{!4, !17}

llvm/test/DebugInfo/X86/pieces-1.ll

diff --git a/llvm/test/DebugInfo/X86/pieces-1.ll b/llvm/test/DebugInfo/X86/pieces-1.ll
index 984d879..cbaf0f6 100644
--- a/llvm/test/DebugInfo/X86/pieces-1.ll
+++ b/llvm/test/DebugInfo/X86/pieces-1.ll
@@ -50,7 +50,7 @@
 !llvm.module.flags = !{!17, !18}
 !llvm.ident = !{!19}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "pieces.c", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/pieces-2.ll

diff --git a/llvm/test/DebugInfo/X86/pieces-2.ll b/llvm/test/DebugInfo/X86/pieces-2.ll
index 25ae127..c751a95 100644
--- a/llvm/test/DebugInfo/X86/pieces-2.ll
+++ b/llvm/test/DebugInfo/X86/pieces-2.ll
@@ -57,7 +57,7 @@
 !llvm.module.flags = !{!22, !23}
 !llvm.ident = !{!24}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "sroasplit-1.c", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/pieces-3.ll

diff --git a/llvm/test/DebugInfo/X86/pieces-3.ll b/llvm/test/DebugInfo/X86/pieces-3.ll
index 3080943..1c7e666 100644
--- a/llvm/test/DebugInfo/X86/pieces-3.ll
+++ b/llvm/test/DebugInfo/X86/pieces-3.ll
@@ -67,7 +67,7 @@
 !llvm.module.flags = !{!21, !22}
 !llvm.ident = !{!23}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "sroasplit-2.c", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/pointer-type-size.ll

diff --git a/llvm/test/DebugInfo/X86/pointer-type-size.ll b/llvm/test/DebugInfo/X86/pointer-type-size.ll
index f5abdfe..cc43c76 100644
--- a/llvm/test/DebugInfo/X86/pointer-type-size.ll
+++ b/llvm/test/DebugInfo/X86/pointer-type-size.ll
@@ -11,7 +11,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!14}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 147882)", isOptimized: false, emissionKind: 0, file: !13, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 147882)", isOptimized: false, emissionKind: 0, file: !13, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DIGlobalVariable(name: "crass", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: %struct.crass* @crass)

llvm/test/DebugInfo/X86/pr11300.ll

diff --git a/llvm/test/DebugInfo/X86/pr11300.ll b/llvm/test/DebugInfo/X86/pr11300.ll
index 46e80e2..248316f 100644
--- a/llvm/test/DebugInfo/X86/pr11300.ll
+++ b/llvm/test/DebugInfo/X86/pr11300.ll
@@ -38,7 +38,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!33}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 ()", isOptimized: false, emissionKind: 0, file: !32, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 ()", isOptimized: false, emissionKind: 0, file: !32, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5, !20}
 !5 = !DISubprogram(name: "zed", linkageName: "_Z3zedP3foo", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !6, scope: !6, type: !7, function: void (%struct.foo*)* @_Z3zedP3foo)

llvm/test/DebugInfo/X86/pr12831.ll

diff --git a/llvm/test/DebugInfo/X86/pr12831.ll b/llvm/test/DebugInfo/X86/pr12831.ll
index 0f0fd69..16ca0f1 100644
--- a/llvm/test/DebugInfo/X86/pr12831.ll
+++ b/llvm/test/DebugInfo/X86/pr12831.ll
@@ -78,7 +78,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!162}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 ", isOptimized: false, emissionKind: 0, file: !161, enums: !1, retainedTypes: !1, subprograms: !3, globals: !128)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 ", isOptimized: false, emissionKind: 0, file: !161, enums: !1, retainedTypes: !1, subprograms: !3, globals: !128)
 !1 = !{}
 !3 = !{!5, !106, !107, !126, !127}
 !5 = !DISubprogram(name: "writeExpr", linkageName: "_ZN17BPLFunctionWriter9writeExprEv", line: 19, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 19, file: !6, scope: null, type: !7, function: void (%class.BPLFunctionWriter*)* @_ZN17BPLFunctionWriter9writeExprEv, declaration: !103, variables: !1)

llvm/test/DebugInfo/X86/pr13303.ll

diff --git a/llvm/test/DebugInfo/X86/pr13303.ll b/llvm/test/DebugInfo/X86/pr13303.ll
index df31a79..fa0e639 100644
--- a/llvm/test/DebugInfo/X86/pr13303.ll
+++ b/llvm/test/DebugInfo/X86/pr13303.ll
@@ -15,7 +15,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!13}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 160143)", isOptimized: false, emissionKind: 0, file: !12, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 160143)", isOptimized: false, emissionKind: 0, file: !12, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "main", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 1, file: !12, scope: !6, type: !7, function: i32 ()* @main, variables: !1)

llvm/test/DebugInfo/X86/pr19307.ll

diff --git a/llvm/test/DebugInfo/X86/pr19307.ll b/llvm/test/DebugInfo/X86/pr19307.ll
index 431fd91..f9431c4 100644
--- a/llvm/test/DebugInfo/X86/pr19307.ll
+++ b/llvm/test/DebugInfo/X86/pr19307.ll
@@ -84,7 +84,7 @@
 !llvm.module.flags = !{!42, !43}
 !llvm.ident = !{!44}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (209308)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !12, globals: !2, imports: !21)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (209308)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !12, globals: !2, imports: !21)
 !1 = !DIFile(filename: "pr19307.cc", directory: "/llvm_cmake_gcc")
 !2 = !{}
 !3 = !{!4, !6, !8}

llvm/test/DebugInfo/X86/processes-relocations.ll

diff --git a/llvm/test/DebugInfo/X86/processes-relocations.ll b/llvm/test/DebugInfo/X86/processes-relocations.ll
index bb49e6b..e138eaa 100644
--- a/llvm/test/DebugInfo/X86/processes-relocations.ll
+++ b/llvm/test/DebugInfo/X86/processes-relocations.ll
@@ -13,7 +13,7 @@
 !llvm.module.flags = !{!3, !4}
 !llvm.ident = !{!5}
 
-!0 = !DICompileUnit(file: !1, language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: false, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2, imports: !2, emissionKind: 1)
+!0 = distinct !DICompileUnit(file: !1, language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: false, enums: !2, retainedTypes: !2, subprograms: !2, globals: !2, imports: !2, emissionKind: 1)
 !1 = !DIFile(filename: "empty.c", directory: "/a")
 !2 = !{}
 !3 = !{i32 2, !"Dwarf Version", i32 4}

llvm/test/DebugInfo/X86/prologue-stack.ll

diff --git a/llvm/test/DebugInfo/X86/prologue-stack.ll b/llvm/test/DebugInfo/X86/prologue-stack.ll
index cd362e3..2b05436 100644
--- a/llvm/test/DebugInfo/X86/prologue-stack.ll
+++ b/llvm/test/DebugInfo/X86/prologue-stack.ll
@@ -21,7 +21,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!14}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 164980) (llvm/trunk 164979)", isOptimized: false, emissionKind: 0, file: !13, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 164980) (llvm/trunk 164979)", isOptimized: false, emissionKind: 0, file: !13, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "isel_line_test2", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 4, file: !13, scope: !6, type: !7, function: i32 ()* @isel_line_test2, variables: !1)

llvm/test/DebugInfo/X86/recursive_inlining.ll

diff --git a/llvm/test/DebugInfo/X86/recursive_inlining.ll b/llvm/test/DebugInfo/X86/recursive_inlining.ll
index c059b98..62c0405 100644
--- a/llvm/test/DebugInfo/X86/recursive_inlining.ll
+++ b/llvm/test/DebugInfo/X86/recursive_inlining.ll
@@ -199,7 +199,7 @@
 !llvm.module.flags = !{!28, !29}
 !llvm.ident = !{!30}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !13, globals: !26, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !13, globals: !26, imports: !2)
 !1 = !DIFile(filename: "<stdin>", directory: "/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/ref_addr_relocation.ll

diff --git a/llvm/test/DebugInfo/X86/ref_addr_relocation.ll b/llvm/test/DebugInfo/X86/ref_addr_relocation.ll
index 488f98e..fd074a3 100644
--- a/llvm/test/DebugInfo/X86/ref_addr_relocation.ll
+++ b/llvm/test/DebugInfo/X86/ref_addr_relocation.ll
@@ -58,7 +58,7 @@
 !llvm.dbg.cu = !{!0, !9}
 !llvm.module.flags = !{!14, !15}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (trunk 191799)", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !2, globals: !6, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (trunk 191799)", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !2, globals: !6, imports: !2)
 !1 = !DIFile(filename: "tu1.cpp", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
 !2 = !{}
 !3 = !{!4}
@@ -67,7 +67,7 @@
 !6 = !{!7}
 !7 = !DIGlobalVariable(name: "f", line: 2, isLocal: false, isDefinition: true, scope: null, file: !8, type: !4, variable: %struct.foo* @f)
 !8 = !DIFile(filename: "tu1.cpp", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
-!9 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (trunk 191799)", isOptimized: false, emissionKind: 0, file: !10, enums: !2, retainedTypes: !3, subprograms: !2, globals: !11, imports: !2)
+!9 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (trunk 191799)", isOptimized: false, emissionKind: 0, file: !10, enums: !2, retainedTypes: !3, subprograms: !2, globals: !11, imports: !2)
 !10 = !DIFile(filename: "tu2.cpp", directory: "/Users/manmanren/test-Nov/type_unique_air/ref_addr")
 !11 = !{!12}
 !12 = !DIGlobalVariable(name: "g", line: 2, isLocal: false, isDefinition: true, scope: null, file: !13, type: !4, variable: %struct.foo* @g)

llvm/test/DebugInfo/X86/reference-argument.ll

diff --git a/llvm/test/DebugInfo/X86/reference-argument.ll b/llvm/test/DebugInfo/X86/reference-argument.ll
index cdbd3f8..4b2df62 100644
--- a/llvm/test/DebugInfo/X86/reference-argument.ll
+++ b/llvm/test/DebugInfo/X86/reference-argument.ll
@@ -32,7 +32,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!47, !68}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "aggregate-indirect-arg.cpp", directory: "")
 !2 = !{}
 !3 = !{!4, !29, !33, !34, !35}

llvm/test/DebugInfo/X86/rvalue-ref.ll

diff --git a/llvm/test/DebugInfo/X86/rvalue-ref.ll b/llvm/test/DebugInfo/X86/rvalue-ref.ll
index bc35a37..e65a381 100644
--- a/llvm/test/DebugInfo/X86/rvalue-ref.ll
+++ b/llvm/test/DebugInfo/X86/rvalue-ref.ll
@@ -23,7 +23,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!17}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 157054) (llvm/trunk 157060)", isOptimized: false, emissionKind: 0, file: !16, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 157054) (llvm/trunk 157060)", isOptimized: false, emissionKind: 0, file: !16, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "foo", linkageName: "_Z3fooOi", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !16, scope: !6, type: !7, function: void (i32*)* @_Z3fooOi, variables: !1)

llvm/test/DebugInfo/X86/sret.ll

diff --git a/llvm/test/DebugInfo/X86/sret.ll b/llvm/test/DebugInfo/X86/sret.ll
index 0ecfc65..00ee0ca 100644
--- a/llvm/test/DebugInfo/X86/sret.ll
+++ b/llvm/test/DebugInfo/X86/sret.ll
@@ -263,7 +263,7 @@
 !llvm.module.flags = !{!64, !65}
 !llvm.ident = !{!66}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (trunk 203283) (llvm/trunk 203307)", isOptimized: false, splitDebugFilename: "sret.dwo", emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !48, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (trunk 203283) (llvm/trunk 203307)", isOptimized: false, splitDebugFilename: "sret.dwo", emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !48, globals: !2, imports: !2)
 !1 = !DIFile(filename: "sret.cpp", directory: "/usr/local/google/home/echristo/tmp")
 !2 = !{}
 !3 = !{!4, !37}

llvm/test/DebugInfo/X86/sroasplit-1.ll

diff --git a/llvm/test/DebugInfo/X86/sroasplit-1.ll b/llvm/test/DebugInfo/X86/sroasplit-1.ll
index e079605..33685dd 100644
--- a/llvm/test/DebugInfo/X86/sroasplit-1.ll
+++ b/llvm/test/DebugInfo/X86/sroasplit-1.ll
@@ -65,7 +65,7 @@
 !llvm.module.flags = !{!22, !23}
 !llvm.ident = !{!24}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !{}, retainedTypes: !{}, subprograms: !3, globals: !{}, imports: !{})
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !{}, retainedTypes: !{}, subprograms: !3, globals: !{}, imports: !{})
 !1 = !DIFile(filename: "sroasplit-1.c", directory: "")
 !2 = !DIExpression()
 !3 = !{!4}

llvm/test/DebugInfo/X86/sroasplit-2.ll

diff --git a/llvm/test/DebugInfo/X86/sroasplit-2.ll b/llvm/test/DebugInfo/X86/sroasplit-2.ll
index d40d380..d189aa6 100644
--- a/llvm/test/DebugInfo/X86/sroasplit-2.ll
+++ b/llvm/test/DebugInfo/X86/sroasplit-2.ll
@@ -71,7 +71,7 @@
 !llvm.module.flags = !{!21, !22}
 !llvm.ident = !{!23}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !{}, retainedTypes: !{}, subprograms: !3, globals: !{}, imports: !{})
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !{}, retainedTypes: !{}, subprograms: !3, globals: !{}, imports: !{})
 !1 = !DIFile(filename: "sroasplit-2.c", directory: "")
 !2 = !DIExpression()
 !3 = !{!4}

llvm/test/DebugInfo/X86/sroasplit-3.ll

diff --git a/llvm/test/DebugInfo/X86/sroasplit-3.ll b/llvm/test/DebugInfo/X86/sroasplit-3.ll
index db65dc6..b3a3545 100644
--- a/llvm/test/DebugInfo/X86/sroasplit-3.ll
+++ b/llvm/test/DebugInfo/X86/sroasplit-3.ll
@@ -41,7 +41,7 @@
 !llvm.module.flags = !{!12, !13, !14}
 !llvm.ident = !{!15}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "test.c", directory: "/Volumes/Data/llvm/_build.ninja.debug")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/sroasplit-4.ll

diff --git a/llvm/test/DebugInfo/X86/sroasplit-4.ll b/llvm/test/DebugInfo/X86/sroasplit-4.ll
index cecd5b9..f3165f8 100644
--- a/llvm/test/DebugInfo/X86/sroasplit-4.ll
+++ b/llvm/test/DebugInfo/X86/sroasplit-4.ll
@@ -109,7 +109,7 @@
 !llvm.module.flags = !{!21, !22}
 !llvm.ident = !{!23}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !16, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !16, globals: !2, imports: !2)
 !1 = !DIFile(filename: "<stdin>", directory: "")
 !2 = !{}
 !3 = !{!4, !10}

llvm/test/DebugInfo/X86/sroasplit-5.ll

diff --git a/llvm/test/DebugInfo/X86/sroasplit-5.ll b/llvm/test/DebugInfo/X86/sroasplit-5.ll
index 4c3633f..3f1a51d 100644
--- a/llvm/test/DebugInfo/X86/sroasplit-5.ll
+++ b/llvm/test/DebugInfo/X86/sroasplit-5.ll
@@ -66,7 +66,7 @@
 !llvm.module.flags = !{!13, !14}
 !llvm.ident = !{!15}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "<stdin>", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/stmt-list-multiple-compile-units.ll

diff --git a/llvm/test/DebugInfo/X86/stmt-list-multiple-compile-units.ll b/llvm/test/DebugInfo/X86/stmt-list-multiple-compile-units.ll
index 958f121..0ca46cc 100644
--- a/llvm/test/DebugInfo/X86/stmt-list-multiple-compile-units.ll
+++ b/llvm/test/DebugInfo/X86/stmt-list-multiple-compile-units.ll
@@ -81,7 +81,7 @@
 
 !llvm.dbg.cu = !{!0, !10}
 !llvm.module.flags = !{!25}
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3", isOptimized: false, emissionKind: 1, file: !23, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3", isOptimized: false, emissionKind: 1, file: !23, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "test", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !23, scope: !6, type: !7, function: i32 (i32)* @test, variables: !1)
@@ -89,7 +89,7 @@
 !7 = !DISubroutineType(types: !8)
 !8 = !{!9, !9}
 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!10 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 172862)", isOptimized: false, emissionKind: 1, file: !24, enums: !1, retainedTypes: !1, subprograms: !11, globals: !1, imports:  !1)
+!10 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 172862)", isOptimized: false, emissionKind: 1, file: !24, enums: !1, retainedTypes: !1, subprograms: !11, globals: !1, imports:  !1)
 !11 = !{!13}
 !13 = !DISubprogram(name: "fn", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !24, scope: !14, type: !7, function: i32 (i32)* @fn, variables: !1)
 !14 = !DIFile(filename: "simple2.c", directory: "/private/tmp")

llvm/test/DebugInfo/X86/stmt-list.ll

diff --git a/llvm/test/DebugInfo/X86/stmt-list.ll b/llvm/test/DebugInfo/X86/stmt-list.ll
index 1f5189e..a711464 100644
--- a/llvm/test/DebugInfo/X86/stmt-list.ll
+++ b/llvm/test/DebugInfo/X86/stmt-list.ll
@@ -16,7 +16,7 @@
 
 !0 = !DISubprogram(name: "f", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 1, file: !6, scope: !1, type: !3, function: void ()* @f)
 !1 = !DIFile(filename: "test2.c", directory: "/home/espindola/llvm")
-!2 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 ()", isOptimized: true, emissionKind: 0, file: !6, enums: !{}, retainedTypes: !{}, subprograms: !5)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 ()", isOptimized: true, emissionKind: 0, file: !6, enums: !{}, retainedTypes: !{}, subprograms: !5)
 !3 = !DISubroutineType(types: !4)
 !4 = !{null}
 !6 = !DIFile(filename: "test2.c", directory: "/home/espindola/llvm")

llvm/test/DebugInfo/X86/stringpool.ll

diff --git a/llvm/test/DebugInfo/X86/stringpool.ll b/llvm/test/DebugInfo/X86/stringpool.ll
index 62b2b1b..9030ae0 100644
--- a/llvm/test/DebugInfo/X86/stringpool.ll
+++ b/llvm/test/DebugInfo/X86/stringpool.ll
@@ -6,7 +6,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 143009)", isOptimized: true, emissionKind: 0, file: !8, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 143009)", isOptimized: true, emissionKind: 0, file: !8, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DIGlobalVariable(name: "yyyy", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: i32* @yyyy)

llvm/test/DebugInfo/X86/struct-loc.ll

diff --git a/llvm/test/DebugInfo/X86/struct-loc.ll b/llvm/test/DebugInfo/X86/struct-loc.ll
index 2c133b9..2236cd0 100644
--- a/llvm/test/DebugInfo/X86/struct-loc.ll
+++ b/llvm/test/DebugInfo/X86/struct-loc.ll
@@ -14,7 +14,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!12}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 152837) (llvm/trunk 152845)", isOptimized: false, emissionKind: 0, file: !11, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 152837) (llvm/trunk 152845)", isOptimized: false, emissionKind: 0, file: !11, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DIGlobalVariable(name: "f", line: 5, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: %struct.foo* @f)

llvm/test/DebugInfo/X86/subrange-type.ll

diff --git a/llvm/test/DebugInfo/X86/subrange-type.ll b/llvm/test/DebugInfo/X86/subrange-type.ll
index 1b01604..752ac78 100644
--- a/llvm/test/DebugInfo/X86/subrange-type.ll
+++ b/llvm/test/DebugInfo/X86/subrange-type.ll
@@ -21,7 +21,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!18}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 171472) (llvm/trunk 171487)", isOptimized: false, emissionKind: 0, file: !17, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 171472) (llvm/trunk 171487)", isOptimized: false, emissionKind: 0, file: !17, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DISubprogram(name: "main", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !6, scope: !6, type: !7, function: i32 ()* @main, variables: !1)

llvm/test/DebugInfo/X86/subreg.ll

diff --git a/llvm/test/DebugInfo/X86/subreg.ll b/llvm/test/DebugInfo/X86/subreg.ll
index 608f0d8..770bf01 100644
--- a/llvm/test/DebugInfo/X86/subreg.ll
+++ b/llvm/test/DebugInfo/X86/subreg.ll
@@ -24,7 +24,7 @@
 !0 = !DILocalVariable(name: "zzz", line: 3, arg: 1, scope: !1, file: !2, type: !6)
 !1 = !DISubprogram(name: "f", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !10, scope: !2, type: !4, function: i16 (i16)* @f)
 !2 = !DIFile(filename: "/home/espindola/llvm/test.c", directory: "/home/espindola/tmpfs/build")
-!3 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 ()", isOptimized: false, emissionKind: 1, file: !10, enums: !{}, retainedTypes: !{}, subprograms: !9, imports:  null)
+!3 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 ()", isOptimized: false, emissionKind: 1, file: !10, enums: !{}, retainedTypes: !{}, subprograms: !9, imports:  null)
 !4 = !DISubroutineType(types: !5)
 !5 = !{null}
 !6 = !DIBasicType(tag: DW_TAG_base_type, name: "short", size: 16, align: 16, encoding: DW_ATE_signed)

llvm/test/DebugInfo/X86/subregisters.ll

diff --git a/llvm/test/DebugInfo/X86/subregisters.ll b/llvm/test/DebugInfo/X86/subregisters.ll
index 94bc583..014ece0 100644
--- a/llvm/test/DebugInfo/X86/subregisters.ll
+++ b/llvm/test/DebugInfo/X86/subregisters.ll
@@ -78,7 +78,7 @@
 !llvm.module.flags = !{!22, !23}
 !llvm.ident = !{!24}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "subregisters.c", directory: "")
 !2 = !{}
 !3 = !{!4, !17}

llvm/test/DebugInfo/X86/template.ll

diff --git a/llvm/test/DebugInfo/X86/template.ll b/llvm/test/DebugInfo/X86/template.ll
index f846b29..a41ac40 100644
--- a/llvm/test/DebugInfo/X86/template.ll
+++ b/llvm/test/DebugInfo/X86/template.ll
@@ -89,7 +89,7 @@
 !llvm.module.flags = !{!33, !34}
 !llvm.ident = !{!35}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (trunk 224394) (llvm/trunk 224384)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !9, globals: !30, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (trunk 224394) (llvm/trunk 224384)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !9, globals: !30, imports: !2)
 !1 = !DIFile(filename: "template.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4, !8}

llvm/test/DebugInfo/X86/tls.ll

diff --git a/llvm/test/DebugInfo/X86/tls.ll b/llvm/test/DebugInfo/X86/tls.ll
index b5544b5..d7d848f 100644
--- a/llvm/test/DebugInfo/X86/tls.ll
+++ b/llvm/test/DebugInfo/X86/tls.ll
@@ -111,7 +111,7 @@
 !llvm.module.flags = !{!15, !16}
 !llvm.ident = !{!17}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 ", isOptimized: false, splitDebugFilename: "-.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !12, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 ", isOptimized: false, splitDebugFilename: "-.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !12, imports: !2)
 !1 = !DIFile(filename: "tls.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/type_units_with_addresses.ll

diff --git a/llvm/test/DebugInfo/X86/type_units_with_addresses.ll b/llvm/test/DebugInfo/X86/type_units_with_addresses.ll
index 2a8d664..10a4197 100644
--- a/llvm/test/DebugInfo/X86/type_units_with_addresses.ll
+++ b/llvm/test/DebugInfo/X86/type_units_with_addresses.ll
@@ -112,7 +112,7 @@
 !llvm.module.flags = !{!34, !35}
 !llvm.ident = !{!36}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, splitDebugFilename: "tu.dwo", emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !2, globals: !27, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, splitDebugFilename: "tu.dwo", emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !2, globals: !27, imports: !2)
 !1 = !DIFile(filename: "tu.cpp", directory: "/tmp/dbginfo")
 !2 = !{}
 !3 = !{!4, !9, !12, !13, !17, !18, !19, !23, !24}

llvm/test/DebugInfo/X86/union-const.ll

diff --git a/llvm/test/DebugInfo/X86/union-const.ll b/llvm/test/DebugInfo/X86/union-const.ll
index 70b03b3..fc0c164 100644
--- a/llvm/test/DebugInfo/X86/union-const.ll
+++ b/llvm/test/DebugInfo/X86/union-const.ll
@@ -40,7 +40,7 @@
 !llvm.module.flags = !{!17, !18, !19}
 !llvm.ident = !{!20}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 (trunk 226915) (llvm/trunk 226905)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 (trunk 226915) (llvm/trunk 226905)", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "union.c", directory: "")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/union-template.ll

diff --git a/llvm/test/DebugInfo/X86/union-template.ll b/llvm/test/DebugInfo/X86/union-template.ll
index 8f5bde8..51d9c0d 100644
--- a/llvm/test/DebugInfo/X86/union-template.ll
+++ b/llvm/test/DebugInfo/X86/union-template.ll
@@ -29,7 +29,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!28}
 
-!0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 178499) (llvm/trunk 178472)", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !9, imports:  !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 178499) (llvm/trunk 178472)", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !9, imports:  !2)
 !1 = !DIFile(filename: "foo.cc", directory: "/usr/local/google/home/echristo/tmp")
 !2 = !{}
 !3 = !{!4}

llvm/test/DebugInfo/X86/vector.ll

diff --git a/llvm/test/DebugInfo/X86/vector.ll b/llvm/test/DebugInfo/X86/vector.ll
index f95ad95..3e2092b 100644
--- a/llvm/test/DebugInfo/X86/vector.ll
+++ b/llvm/test/DebugInfo/X86/vector.ll
@@ -12,7 +12,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!13}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 171825) (llvm/trunk 171822)", isOptimized: false, emissionKind: 0, file: !12, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 171825) (llvm/trunk 171822)", isOptimized: false, emissionKind: 0, file: !12, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports:  !1)
 !1 = !{}
 !3 = !{!5}
 !5 = !DIGlobalVariable(name: "a", line: 3, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: <4 x i32>* @a)

llvm/test/DebugInfo/X86/vla.ll

diff --git a/llvm/test/DebugInfo/X86/vla.ll b/llvm/test/DebugInfo/X86/vla.ll
index 5b7ca5f..243ae2b 100644
--- a/llvm/test/DebugInfo/X86/vla.ll
+++ b/llvm/test/DebugInfo/X86/vla.ll
@@ -75,7 +75,7 @@
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!29}
 
-!0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
 !1 = !DIFile(filename: "vla.c", directory: "")
 !2 = !{}
 !3 = !{!4, !9}