Debug Info Testing: update context from empty string to null.

Context should be either null or MDNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190267 91177308-0d34-0410-b5e6-96231b3b80d8

34 files changed, 103 insertions, 103 deletions

diff --git a/test/DebugInfo/2009-11-05-DeadGlobalVariable.ll b/test/DebugInfo/2009-11-05-DeadGlobalVariable.ll
index 3df667c024..2acee5860f 100644
--- a/test/DebugInfo/2009-11-05-DeadGlobalVariable.ll
+++ b/test/DebugInfo/2009-11-05-DeadGlobalVariable.ll
@@ -14,7 +14,7 @@ entry:
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 720942, metadata !17, metadata !6, metadata !"foo", metadata !"foo", metadata !"", i32 1, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 true, i32 ()* @foo, null, null, metadata !10, i32 0} ; [ DW_TAG_subprogram ] [line 1] [def] [scope 0] [foo]
 !6 = metadata !{i32 720937, metadata !17} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9}
 !9 = metadata !{i32 720932, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !10 = metadata !{metadata !11}
diff --git a/test/DebugInfo/2009-11-10-CurrentFn.ll b/test/DebugInfo/2009-11-10-CurrentFn.ll
index b24e2d385f..8e68d7df35 100644
--- a/test/DebugInfo/2009-11-10-CurrentFn.ll
+++ b/test/DebugInfo/2009-11-10-CurrentFn.ll
@@ -17,7 +17,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 720942, metadata !17, metadata !6, metadata !"bar", metadata !"bar", metadata !"", i32 3, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (i32)* @bar, null, null, metadata !9, metadata !""} ; [ DW_TAG_subprogram ] [line 3] [def] [scope 0] [bar]
 !6 = metadata !{i32 720937, metadata !17} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{null}
 !9 = metadata !{metadata !11}
 !11 = metadata !{i32 721153, metadata !17, metadata !5, metadata !"i", i32 16777219, metadata !12, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
diff --git a/test/DebugInfo/X86/2011-09-26-GlobalVarContext.ll b/test/DebugInfo/X86/2011-09-26-GlobalVarContext.ll
index 367e47c301..6cd56a57c1 100644
--- a/test/DebugInfo/X86/2011-09-26-GlobalVarContext.ll
+++ b/test/DebugInfo/X86/2011-09-26-GlobalVarContext.ll
@@ -23,7 +23,7 @@ declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 720942, metadata !6, metadata !6, metadata !"f", metadata !"f", metadata !"", i32 3, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false, i32 ()* @f, null, null, metadata !10, i32 0} ; [ DW_TAG_subprogram ] [line 3] [def] [scope 0] [f]
 !6 = metadata !{i32 720937, metadata !20} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9}
 !9 = metadata !{i32 720932, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !10 = metadata !{metadata !11}
diff --git a/test/DebugInfo/X86/2011-12-16-BadStructRef.ll b/test/DebugInfo/X86/2011-12-16-BadStructRef.ll
index 842861eabe..3fb8dc5ab2 100644
--- a/test/DebugInfo/X86/2011-12-16-BadStructRef.ll
+++ b/test/DebugInfo/X86/2011-12-16-BadStructRef.ll
@@ -100,22 +100,22 @@ entry:
 !11 = metadata !{i32 720909, metadata !82, metadata !9, metadata !"h", i32 5, i64 32, i64 32, i64 0, i32 0, metadata !12} ; [ DW_TAG_member ]
 !12 = metadata !{i32 720932, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !13 = metadata !{i32 720942, metadata !82, metadata !9, metadata !"baz", metadata !"baz", metadata !"", i32 6, metadata !14, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !17, i32 0} ; [ DW_TAG_subprogram ]
-!14 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!14 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !15 = metadata !{null, metadata !16, metadata !12}
-!16 = metadata !{i32 720911, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !9} ; [ DW_TAG_pointer_type ]
+!16 = metadata !{i32 720911, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !9} ; [ DW_TAG_pointer_type ]
 !17 = metadata !{metadata !18}
 !18 = metadata !{i32 720932}                      ; [ DW_TAG_base_type ]
 !19 = metadata !{i32 720909, metadata !82, metadata !5, metadata !"b_ref", i32 12, i64 64, i64 64, i64 64, i32 0, metadata !20} ; [ DW_TAG_member ]
 !20 = metadata !{i32 720912, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !9} ; [ DW_TAG_reference_type ]
 !21 = metadata !{i32 720942, metadata !82, metadata !5, metadata !"bar", metadata !"bar", metadata !"", i32 13, metadata !22, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !25, i32 0} ; [ DW_TAG_subprogram ]
-!22 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !23, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!22 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !23, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !23 = metadata !{null, metadata !24, metadata !12}
-!24 = metadata !{i32 720911, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !5} ; [ DW_TAG_pointer_type ]
+!24 = metadata !{i32 720911, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !5} ; [ DW_TAG_pointer_type ]
 !25 = metadata !{metadata !26}
 !26 = metadata !{i32 720932}                      ; [ DW_TAG_base_type ]
 !27 = metadata !{metadata !29, metadata !37, metadata !40, metadata !43, metadata !46}
 !29 = metadata !{i32 720942, metadata !82, metadata !6, metadata !"main", metadata !"main", metadata !"", i32 17, metadata !30, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (i32, i8**)* @main, null, null, metadata !47, i32 0} ; [ DW_TAG_subprogram ] [line 17] [def] [scope 0] [main]
-!30 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !31, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!30 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !31, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !31 = metadata !{metadata !12, metadata !12, metadata !32}
 !32 = metadata !{i32 720911, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !33} ; [ DW_TAG_pointer_type ]
 !33 = metadata !{i32 720911, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !34} ; [ DW_TAG_pointer_type ]
diff --git a/test/DebugInfo/X86/DW_AT_byte_size.ll b/test/DebugInfo/X86/DW_AT_byte_size.ll
index 36fa044c4a..6bc907510a 100644
--- a/test/DebugInfo/X86/DW_AT_byte_size.ll
+++ b/test/DebugInfo/X86/DW_AT_byte_size.ll
@@ -29,7 +29,7 @@ declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 786478, metadata !20, metadata !6, metadata !"foo", metadata !"foo", metadata !"_Z3fooP1A", i32 3, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (%struct.A*)* @_Z3fooP1A, null, null, metadata !14, i32 3} ; [ DW_TAG_subprogram ]
 !6 = metadata !{i32 786473, metadata !20} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9, metadata !10}
 !9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !10 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !11} ; [ DW_TAG_pointer_type ]
diff --git a/test/DebugInfo/X86/DW_AT_object_pointer.ll b/test/DebugInfo/X86/DW_AT_object_pointer.ll
index 697655ee6a..2bfc4c5004 100644
--- a/test/DebugInfo/X86/DW_AT_object_pointer.ll
+++ b/test/DebugInfo/X86/DW_AT_object_pointer.ll
@@ -54,13 +54,13 @@ entry:
 !3 = metadata !{metadata !5, metadata !10, metadata !20}
 !5 = metadata !{i32 786478, metadata !6, metadata !6, metadata !"foo", metadata !"foo", metadata !"_Z3fooi", i32 7, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (i32)* @_Z3fooi, null, null, metadata !1, i32 7} ; [ DW_TAG_subprogram ] [line 7] [def] [foo]
 !6 = metadata !{i32 786473, metadata !37} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9}
 !9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
 !10 = metadata !{i32 786478, metadata !6, null, metadata !"A", metadata !"A", metadata !"_ZN1AC1Ev", i32 3, metadata !11, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%class.A*)* @_ZN1AC1Ev, null, metadata !17, metadata !1, i32 3} ; [ DW_TAG_subprogram ] [line 3] [def] [A]
-!11 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !12, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!11 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !12, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !12 = metadata !{null, metadata !13}
-!13 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !14} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from A]
+!13 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !14} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from A]
 !14 = metadata !{i32 786434, metadata !37, null, metadata !"A", i32 1, i64 32, i64 32, i32 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_class_type ] [A] [line 1, size 32, align 32, offset 0] [def] [from ]
 !15 = metadata !{metadata !16, metadata !17}
 !16 = metadata !{i32 786445, metadata !37, metadata !14, metadata !"m_a", i32 4, i64 32, i64 32, i64 0, i32 0, metadata !9} ; [ DW_TAG_member ] [m_a] [line 4, size 32, align 32, offset 0] [from int]
diff --git a/test/DebugInfo/X86/DW_AT_specification.ll b/test/DebugInfo/X86/DW_AT_specification.ll
index 4d928e33fa..f90d0fbf6e 100644
--- a/test/DebugInfo/X86/DW_AT_specification.ll
+++ b/test/DebugInfo/X86/DW_AT_specification.ll
@@ -21,9 +21,9 @@ entry:
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 720942, metadata !6, null, metadata !"bar", metadata !"bar", metadata !"_ZN3foo3barEv", i32 4, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void ()* @_ZN3foo3barEv, null, metadata !11, metadata !16, i32 4} ; [ DW_TAG_subprogram ] [line 4] [def] [bar]
 !6 = metadata !{i32 720937, metadata !27} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{null, metadata !9}
-!9 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !10} ; [ DW_TAG_pointer_type ]
+!9 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !10} ; [ DW_TAG_pointer_type ]
 !10 = metadata !{i32 786451, metadata !27, null, metadata !"foo", i32 1, i64 0, i64 0, i32 0, i32 4, null, null, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [foo] [line 1, size 0, align 0, offset 0] [decl] [from ]
 !11 = metadata !{i32 720942, metadata !6, metadata !12, metadata !"bar", metadata !"bar", metadata !"_ZN3foo3barEv", i32 2, metadata !7, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !14, i32 2} ; [ DW_TAG_subprogram ]
 !12 = metadata !{i32 720898, metadata !27, null, metadata !"foo", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !13, i32 0, null, null} ; [ DW_TAG_class_type ]
diff --git a/test/DebugInfo/X86/DW_TAG_friend.ll b/test/DebugInfo/X86/DW_TAG_friend.ll
index f156069635..a059fd150d 100644
--- a/test/DebugInfo/X86/DW_TAG_friend.ll
+++ b/test/DebugInfo/X86/DW_TAG_friend.ll
@@ -27,9 +27,9 @@
 !9 = metadata !{i32 786445, metadata !28, metadata !7, metadata !"a", i32 2, i64 32, i64 32, i64 0, i32 1, metadata !10} ; [ DW_TAG_member ]
 !10 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !11 = metadata !{i32 786478, metadata !6, metadata !7, metadata !"A", metadata !"A", metadata !"", i32 1, metadata !12, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !15, i32 1} ; [ DW_TAG_subprogram ]
-!12 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !13, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!12 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !13, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !13 = metadata !{null, metadata !14}
-!14 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !7} ; [ DW_TAG_pointer_type ]
+!14 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !7} ; [ DW_TAG_pointer_type ]
 !15 = metadata !{metadata !16}
 !16 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !17 = metadata !{i32 786484, i32 0, null, metadata !"b", metadata !"b", metadata !"", metadata !6, i32 11, metadata !18, i32 0, i32 1, %class.B* @b, null} ; [ DW_TAG_variable ]
@@ -37,9 +37,9 @@
 !19 = metadata !{metadata !20, metadata !21, metadata !27}
 !20 = metadata !{i32 786445, metadata !28, metadata !18, metadata !"b", i32 7, i64 32, i64 32, i64 0, i32 1, metadata !10} ; [ DW_TAG_member ]
 !21 = metadata !{i32 786478, metadata !6, metadata !18, metadata !"B", metadata !"B", metadata !"", i32 5, metadata !22, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !25, i32 5} ; [ DW_TAG_subprogram ]
-!22 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !23, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!22 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !23, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !23 = metadata !{null, metadata !24}
-!24 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !18} ; [ DW_TAG_pointer_type ]
+!24 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !18} ; [ DW_TAG_pointer_type ]
 !25 = metadata !{metadata !26}
 !26 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !27 = metadata !{i32 786474, metadata !18, null, metadata !6, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !7} ; [ DW_TAG_friend ]
diff --git a/test/DebugInfo/X86/aligned_stack_var.ll b/test/DebugInfo/X86/aligned_stack_var.ll
index 74f8b9c651..464c68bc01 100644
--- a/test/DebugInfo/X86/aligned_stack_var.ll
+++ b/test/DebugInfo/X86/aligned_stack_var.ll
@@ -31,7 +31,7 @@ declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 786478, metadata !14, metadata !6, metadata !"run", metadata !"run", metadata !"_Z3runv", i32 1, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void ()* @_Z3runv, null, null, metadata !1, i32 1} ; [ DW_TAG_subprogram ]
 !6 = metadata !{i32 786473, metadata !14} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{null}
 !9 = metadata !{i32 786688, metadata !10, metadata !"x", metadata !6, i32 2, metadata !11, i32 0, i32 0} ; [ DW_TAG_auto_variable ]
 !10 = metadata !{i32 786443, metadata !14, metadata !5, i32 1, i32 12, i32 0} ; [ DW_TAG_lexical_block ]
diff --git a/test/DebugInfo/X86/block-capture.ll b/test/DebugInfo/X86/block-capture.ll
index 230e77a2a2..a4acb10cd1 100644
--- a/test/DebugInfo/X86/block-capture.ll
+++ b/test/DebugInfo/X86/block-capture.ll
@@ -67,7 +67,7 @@ declare i32 @__objc_personality_v0(...)
 !3 = metadata !{metadata !5, metadata !28, metadata !31, metadata !34}
 !5 = metadata !{i32 786478, metadata !6, metadata !6, metadata !"foo", metadata !"foo", metadata !"", i32 5, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, null, null, null, metadata !26, i32 5} ; [ DW_TAG_subprogram ]
 !6 = metadata !{i32 786473, metadata !63} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{null, metadata !9}
 !9 = metadata !{i32 786454, metadata !63, null, metadata !"dispatch_block_t", i32 1, i64 0, i64 0, i64 0, i32 0, metadata !10} ; [ DW_TAG_typedef ]
 !10 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 0, i64 0, i32 0, metadata !11} ; [ DW_TAG_pointer_type ]
@@ -89,10 +89,10 @@ declare i32 @__objc_personality_v0(...)
 !26 = metadata !{metadata !27}
 !27 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !28 = metadata !{i32 786478, metadata !6, metadata !6, metadata !"__foo_block_invoke_0", metadata !"__foo_block_invoke_0", metadata !"", i32 7, metadata !29, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (i8*)* @__foo_block_invoke_0, null, null, metadata !26, i32 7} ; [ DW_TAG_subprogram ]
-!29 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !30, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!29 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !30, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !30 = metadata !{null, metadata !14}
 !31 = metadata !{i32 786478, metadata !6, metadata !6, metadata !"__copy_helper_block_", metadata !"__copy_helper_block_", metadata !"", i32 10, metadata !32, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 false, null, null, null, metadata !26, i32 10} ; [ DW_TAG_subprogram ]
-!32 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !33, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!32 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !33, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !33 = metadata !{null, metadata !14, metadata !14}
 !34 = metadata !{i32 786478, metadata !6, metadata !6, metadata !"__destroy_helper_block_", metadata !"__destroy_helper_block_", metadata !"", i32 10, metadata !29, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 false, null, null, null, metadata !26, i32 10} ; [ DW_TAG_subprogram ]
 !35 = metadata !{i32 1, metadata !"Objective-C Version", i32 2}
diff --git a/test/DebugInfo/X86/concrete_out_of_line.ll b/test/DebugInfo/X86/concrete_out_of_line.ll
index ca932ad761..a7f785d8c1 100644
--- a/test/DebugInfo/X86/concrete_out_of_line.ll
+++ b/test/DebugInfo/X86/concrete_out_of_line.ll
@@ -39,16 +39,16 @@ declare void @_Z8moz_freePv(i8*)
 !3 = metadata !{metadata !5, metadata !23, metadata !27, metadata !31}
 !5 = metadata !{i32 720942, metadata !6, null, metadata !"Release", metadata !"Release", metadata !"_ZN17nsAutoRefCnt7ReleaseEv", i32 14, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32* null, null, metadata !12, metadata !20, i32 14} ; [ DW_TAG_subprogram ] [line 14] [def] [Release]
 !6 = metadata !{i32 720937, metadata !59} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9, metadata !10}
 !9 = metadata !{i32 720932, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
-!10 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !11} ; [ DW_TAG_pointer_type ]
+!10 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !11} ; [ DW_TAG_pointer_type ]
 !11 = metadata !{i32 786451, metadata !59, null, metadata !"nsAutoRefCnt", i32 10, i64 0, i64 0, i32 0, i32 4, null, null, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [nsAutoRefCnt] [line 10, size 0, align 0, offset 0] [decl] [from ]
 !12 = metadata !{i32 720942, metadata !6, metadata !13, metadata !"Release", metadata !"Release", metadata !"_ZN17nsAutoRefCnt7ReleaseEv", i32 11, metadata !7, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 true, null, null, i32 0, metadata !18, i32 11} ; [ DW_TAG_subprogram ]
 !13 = metadata !{i32 720898, metadata !59, null, metadata !"nsAutoRefCnt", i32 10, i64 8, i64 8, i32 0, i32 0, null, metadata !14, null, null, null} ; [ DW_TAG_class_type ]
 !14 = metadata !{metadata !12, metadata !15}
 !15 = metadata !{i32 720942, metadata !6, metadata !13, metadata !"~nsAutoRefCnt", metadata !"~nsAutoRefCnt", metadata !"", i32 12, metadata !16, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 true, null, null, i32 0, metadata !18, i32 12} ; [ DW_TAG_subprogram ]
-!16 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !17, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!16 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !17, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !17 = metadata !{null, metadata !10}
 !18 = metadata !{i32 720932}                      ; [ DW_TAG_base_type ]
 !20 = metadata !{metadata !22}
@@ -60,16 +60,16 @@ declare void @_Z8moz_freePv(i8*)
 !28 = metadata !{metadata !30}
 !30 = metadata !{i32 786689, metadata !27, metadata !"this", metadata !6, i32 16777234, metadata !10, i32 64, i32 0} ; [ DW_TAG_arg_variable ]
 !31 = metadata !{i32 720942, metadata !6, null, metadata !"operator=", metadata !"operator=", metadata !"_ZN12nsAutoRefCntaSEi", i32 4, metadata !32, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, null, null, metadata !36, metadata !43, i32 4} ; [ DW_TAG_subprogram ] [line 4] [def] [operator=]
-!32 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !33, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!32 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !33, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !33 = metadata !{metadata !9, metadata !34, metadata !9}
-!34 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !35} ; [ DW_TAG_pointer_type ]
+!34 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !35} ; [ DW_TAG_pointer_type ]
 !35 = metadata !{i32 786451, metadata !59, null, metadata !"nsAutoRefCnt", i32 2, i64 0, i64 0, i32 0, i32 4, null, null, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [nsAutoRefCnt] [line 2, size 0, align 0, offset 0] [decl] [from ]
 !36 = metadata !{i32 720942, metadata !6, metadata !37, metadata !"operator=", metadata !"operator=", metadata !"_ZN12nsAutoRefCntaSEi", i32 4, metadata !32, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 true, null, null, i32 0, metadata !18, i32 4} ; [ DW_TAG_subprogram ]
 !37 = metadata !{i32 720898, metadata !59, null, metadata !"nsAutoRefCnt", i32 2, i64 32, i64 32, i32 0, i32 0, null, metadata !38, i32 0, null, null, null} ; [ DW_TAG_class_type ] [nsAutoRefCnt] [line 2, size 32, align 32, offset 0] [def] [from ]
 !38 = metadata !{metadata !39, metadata !40, metadata !36}
 !39 = metadata !{i32 786445, metadata !59, metadata !37, metadata !"mValue", i32 7, i64 32, i64 32, i64 0, i32 0, metadata !9} ; [ DW_TAG_member ]
 !40 = metadata !{i32 720942, metadata !6, metadata !37, metadata !"nsAutoRefCnt", metadata !"nsAutoRefCnt", metadata !"", i32 3, metadata !41, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 true, null, null, i32 0, metadata !18, i32 3} ; [ DW_TAG_subprogram ]
-!41 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !42, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!41 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !42, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !42 = metadata !{null, metadata !34}
 !43 = metadata !{metadata !45, metadata !46}
 !45 = metadata !{i32 786689, metadata !31, metadata !"this", metadata !6, i32 16777220, metadata !34, i32 64, i32 0} ; [ DW_TAG_arg_variable ]
diff --git a/test/DebugInfo/X86/dbg-at-specficiation.ll b/test/DebugInfo/X86/dbg-at-specficiation.ll
index 4612087baf..be06ece8f6 100644
--- a/test/DebugInfo/X86/dbg-at-specficiation.ll
+++ b/test/DebugInfo/X86/dbg-at-specficiation.ll
@@ -12,7 +12,7 @@
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 720948, i32 0, null, metadata !"a", metadata !"a", metadata !"", metadata !6, i32 1, metadata !7, i32 0, i32 1, [10 x i32]* @a, null} ; [ DW_TAG_variable ]
 !6 = metadata !{i32 720937, metadata !11} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 720897, null, metadata !"", null, i32 0, i64 320, i64 32, i32 0, i32 0, metadata !8, metadata !9, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 320, align 32, offset 0] [from int]
+!7 = metadata !{i32 720897, null, null, null, i32 0, i64 320, i64 32, i32 0, i32 0, metadata !8, metadata !9, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 320, align 32, offset 0] [from int]
 !8 = metadata !{i32 720932, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !9 = metadata !{metadata !10}
 !10 = metadata !{i32 720929, i64 0, i64 10}        ; [ DW_TAG_subrange_type ]
diff --git a/test/DebugInfo/X86/dbg-declare-arg.ll b/test/DebugInfo/X86/dbg-declare-arg.ll
index e475222cb1..7da41aa534 100644
--- a/test/DebugInfo/X86/dbg-declare-arg.ll
+++ b/test/DebugInfo/X86/dbg-declare-arg.ll
@@ -84,12 +84,12 @@ entry:
 !10 = metadata !{i32 786478, metadata !51, metadata !1, metadata !"A", metadata !"A", metadata !"", i32 2, metadata !11, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
 !11 = metadata !{i32 786453, metadata !51, metadata !3, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !12, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !12 = metadata !{null, metadata !13}
-!13 = metadata !{i32 786447, metadata !2, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !1} ; [ DW_TAG_pointer_type ]
+!13 = metadata !{i32 786447, metadata !2, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !1} ; [ DW_TAG_pointer_type ]
 !14 = metadata !{i32 786478, metadata !51, metadata !1, metadata !"A", metadata !"A", metadata !"", i32 2, metadata !15, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
 !15 = metadata !{i32 786453, metadata !51, metadata !3, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !16 = metadata !{null, metadata !13, metadata !17}
 !17 = metadata !{i32 589840, null, metadata !2, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !18} ; [ DW_TAG_reference_type ]
-!18 = metadata !{i32 786470, metadata !2, metadata !"", null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !1} ; [ DW_TAG_const_type ]
+!18 = metadata !{i32 786470, metadata !2, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !1} ; [ DW_TAG_const_type ]
 !19 = metadata !{i32 786478, metadata !51, metadata !3, metadata !"foo", metadata !"foo", metadata !"_Z3fooi", i32 4, metadata !20, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%class.A*, i32)* @_Z3fooi, null, null, null, i32 0} ; [ DW_TAG_subprogram ] [line 4] [def] [scope 0] [foo]
 !20 = metadata !{i32 786453, metadata !51, metadata !3, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !21, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !21 = metadata !{metadata !1}
diff --git a/test/DebugInfo/X86/dbg-declare.ll b/test/DebugInfo/X86/dbg-declare.ll
index 68468b0bfb..aa8218ace5 100644
--- a/test/DebugInfo/X86/dbg-declare.ll
+++ b/test/DebugInfo/X86/dbg-declare.ll
@@ -34,11 +34,11 @@ declare void @llvm.stackrestore(i8*) nounwind
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 786478, metadata !26, metadata !0, metadata !"foo", metadata !"foo", metadata !"", i32 6, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (i32*)* @foo, null, null, metadata !12, i32 0} ; [ DW_TAG_subprogram ]
 !6 = metadata !{i32 786473, metadata !26} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9, metadata !10}
 !9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
-!10 = metadata !{i32 786447, null, metadata !"", null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !11} ; [ DW_TAG_pointer_type ]
-!11 = metadata !{i32 786470, null, metadata !"", null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !9} ; [ DW_TAG_const_type ]
+!10 = metadata !{i32 786447, null, null, null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !11} ; [ DW_TAG_pointer_type ]
+!11 = metadata !{i32 786470, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !9} ; [ DW_TAG_const_type ]
 !12 = metadata !{metadata !13}
 !13 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !14 = metadata !{i32 786689, metadata !5, metadata !"x", metadata !6, i32 16777221, metadata !10, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
@@ -46,7 +46,7 @@ declare void @llvm.stackrestore(i8*) nounwind
 !16 = metadata !{i32 7, i32 13, metadata !17, null}
 !17 = metadata !{i32 786443, metadata !26, metadata !5, i32 6, i32 1, i32 0} ; [ DW_TAG_lexical_block ]
 !18 = metadata !{i32 786688, metadata !17, metadata !"a", metadata !6, i32 7, metadata !19, i32 0, i32 0} ; [ DW_TAG_auto_variable ]
-!19 = metadata !{i32 786433, null, metadata !"", null, i32 0, i64 0, i64 8, i32 0, i32 0, metadata !20, metadata !21, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 0, align 8, offset 0] [from char]
+!19 = metadata !{i32 786433, null, null, null, i32 0, i64 0, i64 8, i32 0, i32 0, metadata !20, metadata !21, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 0, align 8, offset 0] [from char]
 !20 = metadata !{i32 786468, null, null, metadata !"char", i32 0, i64 8, i64 8, i64 0, i32 0, i32 6} ; [ DW_TAG_base_type ]
 !21 = metadata !{metadata !22}
 !22 = metadata !{i32 786465, i64 0, i64 -1}        ; [ DW_TAG_subrange_type ]
diff --git a/test/DebugInfo/X86/dbg-large-unsigned-const.ll b/test/DebugInfo/X86/dbg-large-unsigned-const.ll
index a2c64757f5..5ec4f58d37 100644
--- a/test/DebugInfo/X86/dbg-large-unsigned-const.ll
+++ b/test/DebugInfo/X86/dbg-large-unsigned-const.ll
@@ -39,7 +39,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 !6 = metadata !{i32 786478, metadata !32, null, metadata !"fn", metadata !"fn", metadata !"_Z2fnx", i32 6, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i1 (i64)* @_Z2fnx, null, null, metadata !31, i32 6} ; [ DW_TAG_subprogram ] [line 6] [def] [fn]
 !7 = metadata !{i32 786689, metadata !1, metadata !"LHS", metadata !2, i32 16777218, metadata !8, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
 !8 = metadata !{i32 786448, metadata !0, null, null, i32 0, i64 32, i64 32, i64 0, i32 0, metadata !9} ; [ DW_TAG_reference_type ]
-!9 = metadata !{i32 786470, metadata !0, metadata !"", null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !10} ; [ DW_TAG_const_type ]
+!9 = metadata !{i32 786470, metadata !0, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !10} ; [ DW_TAG_const_type ]
 !10 = metadata !{i32 786468, null, metadata !0, metadata !"long long int", i32 0, i64 64, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !11 = metadata !{i32 786689, metadata !1, metadata !"RHS", metadata !2, i32 33554434, metadata !8, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
 !12 = metadata !{i32 786689, metadata !6, metadata !"a", metadata !2, i32 16777222, metadata !10, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
diff --git a/test/DebugInfo/X86/dbg-subrange.ll b/test/DebugInfo/X86/dbg-subrange.ll
index 94911c6e0d..62580dc19c 100644
--- a/test/DebugInfo/X86/dbg-subrange.ll
+++ b/test/DebugInfo/X86/dbg-subrange.ll
@@ -19,13 +19,13 @@ entry:
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 720942, metadata !21, metadata !6, metadata !"bar", metadata !"bar", metadata !"", i32 4, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void ()* @bar, null, null, metadata !9, i32 0} ; [ DW_TAG_subprogram ] [line 4] [def] [scope 0] [bar]
 !6 = metadata !{i32 720937, metadata !21} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{null}
 !9 = metadata !{metadata !10}
 !10 = metadata !{i32 720932}                      ; [ DW_TAG_base_type ]
 !11 = metadata !{metadata !13}
 !13 = metadata !{i32 720948, i32 0, null, metadata !"s", metadata !"s", metadata !"", metadata !6, i32 2, metadata !14, i32 0, i32 1, [4294967296 x i8]* @s, null} ; [ DW_TAG_variable ]
-!14 = metadata !{i32 720897, null, metadata !"", null, i32 0, i64 34359738368, i64 8, i32 0, i32 0, metadata !15, metadata !16, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 34359738368, align 8, offset 0] [from char]
+!14 = metadata !{i32 720897, null, null, null, i32 0, i64 34359738368, i64 8, i32 0, i32 0, metadata !15, metadata !16, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 34359738368, align 8, offset 0] [from char]
 !15 = metadata !{i32 720932, null, null, metadata !"char", i32 0, i64 8, i64 8, i64 0, i32 0, i32 6} ; [ DW_TAG_base_type ]
 !16 = metadata !{metadata !17}
 !17 = metadata !{i32 720929, i64 0, i64 4294967296} ; [ DW_TAG_subrange_type ]
diff --git a/test/DebugInfo/X86/debug-info-static-member.ll b/test/DebugInfo/X86/debug-info-static-member.ll
index 2f9dd1261f..ddaa687e02 100644
--- a/test/DebugInfo/X86/debug-info-static-member.ll
+++ b/test/DebugInfo/X86/debug-info-static-member.ll
@@ -63,7 +63,7 @@ declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 786478, metadata !33, metadata !6, metadata !"main", metadata !"main", metadata !"", i32 18, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @main, null, null, metadata !1, i32 23} ; [ DW_TAG_subprogram ] [line 18] [def] [scope 23] [main]
 !6 = metadata !{i32 786473, metadata !33} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9}
 !9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
 !10 = metadata !{metadata !12, metadata !27, metadata !28}
diff --git a/test/DebugInfo/X86/dwarf-public-names.ll b/test/DebugInfo/X86/dwarf-public-names.ll
index e5ae022757..20f2033909 100644
--- a/test/DebugInfo/X86/dwarf-public-names.ll
+++ b/test/DebugInfo/X86/dwarf-public-names.ll
@@ -95,9 +95,9 @@ attributes #1 = { nounwind readnone }
 !2 = metadata !{metadata !3, metadata !18, metadata !19, metadata !20}
 !3 = metadata !{i32 786478, metadata !4, null, metadata !"member_function", metadata !"member_function", metadata !"_ZN1C15member_functionEv", i32 9, metadata !5, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.C*)* @_ZN1C15member_functionEv, null, metadata !12, metadata !1, i32 9} ; [ DW_TAG_subprogram ] [line 9] [def] [member_function]
 !4 = metadata !{i32 786473, metadata !37} ; [ DW_TAG_file_type ]
-!5 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !6, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!5 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !6, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !6 = metadata !{null, metadata !7}
-!7 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !8} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from C]
+!7 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !8} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from C]
 !8 = metadata !{i32 786451, metadata !37, null, metadata !"C", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !9, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [C] [line 1, size 8, align 8, offset 0] [def] [from ]
 !9 = metadata !{metadata !10, metadata !12, metadata !14}
 !10 = metadata !{i32 786445, metadata !37, metadata !8, metadata !"static_member_variable", i32 4, i64 0, i64 0, i64 0, i32 4096, metadata !11, null} ; [ DW_TAG_member ] [static_member_variable] [line 4, size 0, align 0, offset 0] [static] [from int]
@@ -105,14 +105,14 @@ attributes #1 = { nounwind readnone }
 !12 = metadata !{i32 786478, metadata !4, metadata !8, metadata !"member_function", metadata !"member_function", metadata !"_ZN1C15member_functionEv", i32 2, metadata !5, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !13, i32 2} ; [ DW_TAG_subprogram ] [line 2] [member_function]
 !13 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ] [line 0, size 0, align 0, offset 0]
 !14 = metadata !{i32 786478, metadata !4, metadata !8, metadata !"static_member_function", metadata !"static_member_function", metadata !"_ZN1C22static_member_functionEv", i32 3, metadata !15, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !17, i32 3} ; [ DW_TAG_subprogram ] [line 3] [static_member_function]
-!15 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!15 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !16 = metadata !{metadata !11}
 !17 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ] [line 0, size 0, align 0, offset 0]
 !18 = metadata !{i32 786478, metadata !4, null, metadata !"static_member_function", metadata !"static_member_function", metadata !"_ZN1C22static_member_functionEv", i32 13, metadata !15, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @_ZN1C22static_member_functionEv, null, metadata !14, metadata !1, i32 13} ; [ DW_TAG_subprogram ] [line 13] [def] [static_member_function]
 !19 = metadata !{i32 786478, metadata !4, metadata !4, metadata !"global_function", metadata !"global_function", metadata !"_Z15global_functionv", i32 19, metadata !15, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @_Z15global_functionv, null, null, metadata !1, i32 19} ; [ DW_TAG_subprogram ] [line 19] [def] [global_function]
 !20 = metadata !{i32 786478, metadata !4, metadata !21, metadata !"global_namespace_function", metadata !"global_namespace_function", metadata !"_ZN2ns25global_namespace_functionEv", i32 24, metadata !22, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void ()* @_ZN2ns25global_namespace_functionEv, null, null, metadata !1, i32 24} ; [ DW_TAG_subprogram ] [line 24] [def] [global_namespace_function]
 !21 = metadata !{i32 786489, null, metadata !"ns", metadata !4, i32 23} ; [ DW_TAG_namespace ] [/usr2/kparzysz/s.hex/t/dwarf-public-names.cpp]
-!22 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !23, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!22 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !23, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !23 = metadata !{null}
 !24 = metadata !{metadata !25, metadata !26, metadata !27}
 !25 = metadata !{i32 786484, i32 0, metadata !8, metadata !"static_member_variable", metadata !"static_member_variable", metadata !"_ZN1C22static_member_variableE", metadata !4, i32 7, metadata !11, i32 0, i32 1, i32* @_ZN1C22static_member_variableE, metadata !10} ; [ DW_TAG_variable ] [static_member_variable] [line 7] [def]
diff --git a/test/DebugInfo/X86/elf-names.ll b/test/DebugInfo/X86/elf-names.ll
index b30cd4948b..b85f5fb84b 100644
--- a/test/DebugInfo/X86/elf-names.ll
+++ b/test/DebugInfo/X86/elf-names.ll
@@ -63,9 +63,9 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 !3 = metadata !{metadata !5, metadata !31}
 !5 = metadata !{i32 786478, metadata !6, null, metadata !"D", metadata !"D", metadata !"_ZN1DC2Ev", i32 12, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (%class.D*)* @_ZN1DC2Ev, null, metadata !17, metadata !27, i32 12} ; [ DW_TAG_subprogram ] [line 12] [def] [D]
 !6 = metadata !{i32 786473, metadata !53} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{null, metadata !9}
-!9 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !10} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from D]
+!9 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !10} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from D]
 !10 = metadata !{i32 786434, metadata !53, null, metadata !"D", i32 1, i64 128, i64 32, i32 0, i32 0, null, metadata !11, i32 0, null, null, null} ; [ DW_TAG_class_type ] [D] [line 1, size 128, align 32, offset 0] [def] [from ]
 !11 = metadata !{metadata !12, metadata !14, metadata !15, metadata !16, metadata !17, metadata !20}
 !12 = metadata !{i32 786445, metadata !53, metadata !10, metadata !"c1", i32 6, i64 32, i64 32, i64 0, i32 1, metadata !13} ; [ DW_TAG_member ] [c1] [line 6, size 32, align 32, offset 0] [private] [from int]
@@ -77,7 +77,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 !18 = metadata !{metadata !19}
 !19 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ] [line 0, size 0, align 0, offset 0]
 !20 = metadata !{i32 786478, metadata !6, metadata !10, metadata !"D", metadata !"D", metadata !"", i32 4, metadata !21, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 true, null, null, i32 0, metadata !25, i32 4} ; [ DW_TAG_subprogram ] [line 4] [D]
-!21 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !22, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!21 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !22, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !22 = metadata !{null, metadata !9, metadata !23}
 !23 = metadata !{i32 786448, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !24} ; [ DW_TAG_reference_type ] [line 0, size 0, align 0, offset 0] [from ]
 !24 = metadata !{i32 786470, null, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, metadata !10} ; [ DW_TAG_const_type ] [line 0, size 0, align 0, offset 0] [from D]
diff --git a/test/DebugInfo/X86/empty-and-one-elem-array.ll b/test/DebugInfo/X86/empty-and-one-elem-array.ll
index 9e80865af8..57e0e18e77 100644
--- a/test/DebugInfo/X86/empty-and-one-elem-array.ll
+++ b/test/DebugInfo/X86/empty-and-one-elem-array.ll
@@ -66,7 +66,7 @@ declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 786478, metadata !6, metadata !6, metadata !"func", metadata !"func", metadata !"", i32 11, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false, i32 ()* @func, null, null, metadata !1, i32 11} ; [ DW_TAG_subprogram ] [line 11] [def] [func]
 !6 = metadata !{i32 786473, metadata !32} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9}
 !9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
 !10 = metadata !{i32 786688, metadata !11, metadata !"my_foo", metadata !6, i32 12, metadata !12, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [my_foo] [line 12]
diff --git a/test/DebugInfo/X86/empty-array.ll b/test/DebugInfo/X86/empty-array.ll
index f8d1fc1c66..c0a422be90 100644
--- a/test/DebugInfo/X86/empty-array.ll
+++ b/test/DebugInfo/X86/empty-array.ll
@@ -37,9 +37,9 @@
 !12 = metadata !{metadata !13}
 !13 = metadata !{i32 786465, i64 0, i64 -1} ; [ DW_TAG_subrange_type ] [unbound]
 !14 = metadata !{i32 786478, metadata !6, metadata !7, metadata !"A", metadata !"A", metadata !"", i32 1, metadata !15, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !18, i32 1} ; [ DW_TAG_subprogram ] [line 1] [A]
-!15 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!15 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !16 = metadata !{null, metadata !17}
-!17 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !7} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from A]
+!17 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !7} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from A]
 !18 = metadata !{metadata !19}
 !19 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ] [line 0, size 0, align 0, offset 0]
 !20 = metadata !{metadata !"t.cpp", metadata !"/Volumes/Sandbox/llvm"}
diff --git a/test/DebugInfo/X86/ending-run.ll b/test/DebugInfo/X86/ending-run.ll
index e212a0f257..b914d690f3 100644
--- a/test/DebugInfo/X86/ending-run.ll
+++ b/test/DebugInfo/X86/ending-run.ll
@@ -33,7 +33,7 @@ declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 786478, metadata !19, metadata !6, metadata !"callee", metadata !"callee", metadata !"", i32 4, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false, i32 (i32)* @callee, null, null, metadata !10, i32 7} ; [ DW_TAG_subprogram ]
 !6 = metadata !{i32 786473, metadata !19} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9, metadata !9}
 !9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !10 = metadata !{metadata !11}
diff --git a/test/DebugInfo/X86/linkage-name.ll b/test/DebugInfo/X86/linkage-name.ll
index e5902f93f2..0c2742741e 100644
--- a/test/DebugInfo/X86/linkage-name.ll
+++ b/test/DebugInfo/X86/linkage-name.ll
@@ -31,10 +31,10 @@ declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 786478, metadata !6, null, metadata !"a", metadata !"a", metadata !"_ZN1A1aEi", i32 5, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (%class.A*, i32)* @_ZN1A1aEi, null, metadata !13, metadata !16, i32 5} ; [ DW_TAG_subprogram ]
 !6 = metadata !{i32 786473, metadata !28} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9, metadata !10, metadata !9}
 !9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
-!10 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !11} ; [ DW_TAG_pointer_type ]
+!10 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !11} ; [ DW_TAG_pointer_type ]
 !11 = metadata !{i32 786434, metadata !28, null, metadata !"A", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !12, i32 0, null, null, null} ; [ DW_TAG_class_type ] [A] [line 1, size 8, align 8, offset 0] [def] [from ]
 !12 = metadata !{metadata !13}
 !13 = metadata !{i32 786478, metadata !6, metadata !11, metadata !"a", metadata !"a", metadata !"_ZN1A1aEi", i32 2, metadata !7, i1 false, i1 false, i32 0, i32 0, null, i32 257, i1 false, null, null, i32 0, metadata !14, i32 0} ; [ DW_TAG_subprogram ]
diff --git a/test/DebugInfo/X86/low-pc-cu.ll b/test/DebugInfo/X86/low-pc-cu.ll
index 682820896c..56706ebe84 100644
--- a/test/DebugInfo/X86/low-pc-cu.ll
+++ b/test/DebugInfo/X86/low-pc-cu.ll
@@ -19,7 +19,7 @@ entry:
 !3 = metadata !{metadata !5, metadata !12}
 !5 = metadata !{i32 786478, metadata !6, null, metadata !"q", metadata !"q", metadata !"_Z1qv", i32 5, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @_Z1qv, null, null, metadata !10, i32 0} ; [ DW_TAG_subprogram ] [line 5] [def] [scope 0] [q]
 !6 = metadata !{i32 786473, metadata !15} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9}
 !9 = metadata !{i32 786468, metadata !15, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !10 = metadata !{metadata !11}
diff --git a/test/DebugInfo/X86/misched-dbg-value.ll b/test/DebugInfo/X86/misched-dbg-value.ll
index 50b1bc85c6..bbfa500182 100644
--- a/test/DebugInfo/X86/misched-dbg-value.ll
+++ b/test/DebugInfo/X86/misched-dbg-value.ll
@@ -102,7 +102,7 @@ attributes #1 = { nounwind readnone }
 !10 = metadata !{i32 0}
 !11 = metadata !{metadata !12}
 !12 = metadata !{i32 786478, metadata !82, metadata !3, metadata !"Proc8", metadata !"Proc8", metadata !"", i32 180, metadata !13, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 true, void (i32*, [51 x i32]*, i32, i32)* @Proc8, null, null, metadata !22, i32 185} ; [ DW_TAG_subprogram ] [line 180] [def] [scope 185] [Proc8]
-!13 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !14, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!13 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !14, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !14 = metadata !{null, metadata !15, metadata !17, metadata !21, metadata !21}
 !15 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !16} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int]
 !16 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
diff --git a/test/DebugInfo/X86/multiple-at-const-val.ll b/test/DebugInfo/X86/multiple-at-const-val.ll
index 8842d3ab36..74a2e9c1da 100644
--- a/test/DebugInfo/X86/multiple-at-const-val.ll
+++ b/test/DebugInfo/X86/multiple-at-const-val.ll
@@ -45,7 +45,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 !32 = metadata !{i32 786472, metadata !"_S_os_ostate_end", i64 65536} ; [ DW_TAG_enumerator ] [_S_os_ostate_end :: 65536]
 !49 = metadata !{i32 786434, metadata !1801, metadata !4, metadata !"os_base", i32 200, i64 1728, i64 64, i32 0, i32 0, null, metadata !50, i32 0, metadata !49, null, null} ; [ DW_TAG_class_type ] [os_base] [line 200, size 1728, align 64, offset 0] [def] [from ]
 !50 = metadata !{metadata !77}
-!54 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !55, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!54 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !55, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !55 = metadata !{metadata !56}
 !56 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !77 = metadata !{i32 786445, metadata !1801, metadata !49, metadata !"badbit", i32 331, i64 0, i64 0, i64 0, i32 4096, metadata !78, i32 1} ; [ DW_TAG_member ]
diff --git a/test/DebugInfo/X86/nondefault-subrange-array.ll b/test/DebugInfo/X86/nondefault-subrange-array.ll
index 0776fb083f..44d35a222a 100644
--- a/test/DebugInfo/X86/nondefault-subrange-array.ll
+++ b/test/DebugInfo/X86/nondefault-subrange-array.ll
@@ -40,9 +40,9 @@
 !12 = metadata !{metadata !13}
 !13 = metadata !{i32 786465, i64 -3, i64 42} ; [ DW_TAG_subrange_type ] [-3, 39]
 !14 = metadata !{i32 786478, metadata !6, metadata !7, metadata !"A", metadata !"A", metadata !"", i32 1, metadata !15, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !18, i32 1} ; [ DW_TAG_subprogram ] [line 1] [A]
-!15 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!15 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !16 = metadata !{null, metadata !17}
-!17 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !7} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from A]
+!17 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !7} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from A]
 !18 = metadata !{metadata !19}
 !19 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ] [line 0, size 0, align 0, offset 0]
 !20 = metadata !{metadata !"t.cpp", metadata !"/Volumes/Sandbox/llvm"}
diff --git a/test/DebugInfo/X86/op_deref.ll b/test/DebugInfo/X86/op_deref.ll
index 1f55dd067f..a56dd66149 100644
--- a/test/DebugInfo/X86/op_deref.ll
+++ b/test/DebugInfo/X86/op_deref.ll
@@ -70,7 +70,7 @@ declare void @llvm.stackrestore(i8*) nounwind
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 786478, metadata !28, metadata !6, metadata !"testVLAwithSize", metadata !"testVLAwithSize", metadata !"", i32 1, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (i32)* @testVLAwithSize, null, null, metadata !1, i32 2} ; [ DW_TAG_subprogram ]
 !6 = metadata !{i32 786473, metadata !28} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{null, metadata !9}
 !9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !10 = metadata !{i32 786689, metadata !5, metadata !"s", metadata !6, i32 16777217, metadata !9, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
diff --git a/test/DebugInfo/X86/pr11300.ll b/test/DebugInfo/X86/pr11300.ll
index 4283dbc803..423a5e7e2f 100644
--- a/test/DebugInfo/X86/pr11300.ll
+++ b/test/DebugInfo/X86/pr11300.ll
@@ -36,15 +36,15 @@ entry:
 !3 = metadata !{metadata !5, metadata !20}
 !5 = metadata !{i32 720942, metadata !6, metadata !6, metadata !"zed", metadata !"zed", metadata !"_Z3zedP3foo", i32 4, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.foo*)* @_Z3zedP3foo, null, null, metadata !21, i32 4} ; [ DW_TAG_subprogram ] [line 4] [def] [zed]
 !6 = metadata !{i32 720937, metadata !32} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{null, metadata !9}
 !9 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !10} ; [ DW_TAG_pointer_type ]
 !10 = metadata !{i32 720898, metadata !32, null, metadata !"foo", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !11, i32 0, null, null, null} ; [ DW_TAG_class_type ] [foo] [line 1, size 8, align 8, offset 0] [def] [from ]
 !11 = metadata !{metadata !12}
 !12 = metadata !{i32 720942, metadata !6, metadata !10, metadata !"bar", metadata !"bar", metadata !"_ZN3foo3barEv", i32 2, metadata !13, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !16, i32 2} ; [ DW_TAG_subprogram ]
-!13 = metadata !{i32 720917, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !14, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!13 = metadata !{i32 720917, i32 0, null, i32 0, i32 0, i64 0, i64 0, i32 0, i32 0, null, metadata !14, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !14 = metadata !{null, metadata !15}
-!15 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !10} ; [ DW_TAG_pointer_type ]
+!15 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !10} ; [ DW_TAG_pointer_type ]
 !16 = metadata !{metadata !17}
 !17 = metadata !{i32 720932}                      ; [ DW_TAG_base_type ]
 !18 = metadata !{metadata !19}
diff --git a/test/DebugInfo/X86/pr12831.ll b/test/DebugInfo/X86/pr12831.ll
index a5910d9a73..4d07873b60 100644
--- a/test/DebugInfo/X86/pr12831.ll
+++ b/test/DebugInfo/X86/pr12831.ll
@@ -82,42 +82,42 @@ entry:
 !3 = metadata !{metadata !5, metadata !106, metadata !107, metadata !126, metadata !127}
 !5 = metadata !{i32 786478, metadata !6, null, metadata !"writeExpr", metadata !"writeExpr", metadata !"_ZN17BPLFunctionWriter9writeExprEv", i32 19, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%class.BPLFunctionWriter*)* @_ZN17BPLFunctionWriter9writeExprEv, null, metadata !103, metadata !1, i32 19} ; [ DW_TAG_subprogram ]
 !6 = metadata !{i32 786473, metadata !160} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{null, metadata !9}
-!9 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !10} ; [ DW_TAG_pointer_type ]
+!9 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !10} ; [ DW_TAG_pointer_type ]
 !10 = metadata !{i32 786434, metadata !160, null, metadata !"BPLFunctionWriter", i32 15, i64 64, i64 64, i32 0, i32 0, null, metadata !11, i32 0, null, null, null} ; [ DW_TAG_class_type ] [BPLFunctionWriter] [line 15, size 64, align 64, offset 0] [def] [from ]
 !11 = metadata !{metadata !12, metadata !103}
 !12 = metadata !{i32 786445, metadata !160, metadata !10, metadata !"MW", i32 16, i64 64, i64 64, i64 0, i32 1, metadata !13} ; [ DW_TAG_member ]
-!13 = metadata !{i32 786447, null, metadata !"", null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !14} ; [ DW_TAG_pointer_type ]
+!13 = metadata !{i32 786447, null, null, null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !14} ; [ DW_TAG_pointer_type ]
 !14 = metadata !{i32 786434, metadata !160, null, metadata !"BPLModuleWriter", i32 12, i64 8, i64 8, i32 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_class_type ] [BPLModuleWriter] [line 12, size 8, align 8, offset 0] [def] [from ]
 !15 = metadata !{metadata !16}
 !16 = metadata !{i32 786478, metadata !6, metadata !14, metadata !"writeIntrinsic", metadata !"writeIntrinsic", metadata !"_ZN15BPLModuleWriter14writeIntrinsicE8functionIFvvEE", i32 13, metadata !17, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !101, i32 13} ; [ DW_TAG_subprogram ]
-!17 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !18, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!17 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !18, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !18 = metadata !{null, metadata !19, metadata !20}
-!19 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !14} ; [ DW_TAG_pointer_type ]
+!19 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !14} ; [ DW_TAG_pointer_type ]
 !20 = metadata !{i32 786434, metadata !160, null, metadata !"function<void ()>", i32 6, i64 8, i64 8, i32 0, i32 0, null, metadata !21, i32 0, null, metadata !97, null} ; [ DW_TAG_class_type ] [function<void ()>] [line 6, size 8, align 8, offset 0] [def] [from ]
 !21 = metadata !{metadata !22, metadata !51, metadata !58, metadata !86, metadata !92}
 !22 = metadata !{i32 786478, metadata !6, metadata !20, metadata !"function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:20:36> >", metadata !"function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:20:36> >", metadata !"", i32 8, metadata !23, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, metadata !47, i32 0, metadata !49, i32 8} ; [ DW_TAG_subprogram ]
-!23 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !24, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!23 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !24, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !24 = metadata !{null, metadata !25, metadata !26}
-!25 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !20} ; [ DW_TAG_pointer_type ]
+!25 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !20} ; [ DW_TAG_pointer_type ]
 !26 = metadata !{i32 786434, metadata !160, metadata !5, metadata !"", i32 20, i64 8, i64 8, i32 0, i32 0, null, metadata !27, i32 0, null, null, null} ; [ DW_TAG_class_type ] [line 20, size 8, align 8, offset 0] [def] [from ]
 !27 = metadata !{metadata !28, metadata !35, metadata !41}
 !28 = metadata !{i32 786478, metadata !6, metadata !26, metadata !"operator()", metadata !"operator()", metadata !"", i32 20, metadata !29, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !33, i32 20} ; [ DW_TAG_subprogram ]
-!29 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !30, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!29 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !30, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !30 = metadata !{null, metadata !31}
-!31 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !32} ; [ DW_TAG_pointer_type ]
-!32 = metadata !{i32 786470, null, metadata !"", null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !26} ; [ DW_TAG_const_type ]
+!31 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !32} ; [ DW_TAG_pointer_type ]
+!32 = metadata !{i32 786470, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !26} ; [ DW_TAG_const_type ]
 !33 = metadata !{metadata !34}
 !34 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !35 = metadata !{i32 786478, metadata !6, metadata !26, metadata !"~", metadata !"~", metadata !"", i32 20, metadata !36, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !39, i32 20} ; [ DW_TAG_subprogram ]
-!36 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !37, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!36 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !37, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !37 = metadata !{null, metadata !38}
-!38 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !26} ; [ DW_TAG_pointer_type ]
+!38 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !26} ; [ DW_TAG_pointer_type ]
 !39 = metadata !{metadata !40}
 !40 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !41 = metadata !{i32 786478, metadata !6, metadata !26, metadata !"", metadata !"", metadata !"", i32 20, metadata !42, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !45, i32 20} ; [ DW_TAG_subprogram ]
-!42 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !43, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!42 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !43, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !43 = metadata !{null, metadata !38, metadata !44}
 !44 = metadata !{i32 786498, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !26} ; [ DW_TAG_rvalue_reference_type ]
 !45 = metadata !{metadata !46}
@@ -127,32 +127,32 @@ entry:
 !49 = metadata !{metadata !50}
 !50 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !51 = metadata !{i32 786478, metadata !6, metadata !20, metadata !"function<function<void ()> >", metadata !"function<function<void ()> >", metadata !"", i32 8, metadata !52, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, metadata !54, i32 0, metadata !56, i32 8} ; [ DW_TAG_subprogram ]
-!52 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !53, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!52 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !53, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !53 = metadata !{null, metadata !25, metadata !20}
 !54 = metadata !{metadata !55}
 !55 = metadata !{i32 786479, null, metadata !"_Functor", metadata !20, null, i32 0, i32 0} ; [ DW_TAG_template_type_parameter ]
 !56 = metadata !{metadata !57}
 !57 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !58 = metadata !{i32 786478, metadata !6, metadata !20, metadata !"function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:23:36> >", metadata !"function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:23:36> >", metadata !"", i32 8, metadata !59, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, metadata !82, i32 0, metadata !84, i32 8} ; [ DW_TAG_subprogram ]
-!59 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !60, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!59 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !60, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !60 = metadata !{null, metadata !25, metadata !61}
 !61 = metadata !{i32 786434, metadata !160, metadata !5, metadata !"", i32 23, i64 8, i64 8, i32 0, i32 0, null, metadata !62, i32 0, null, null, null} ; [ DW_TAG_class_type ] [line 23, size 8, align 8, offset 0] [def] [from ]
 !62 = metadata !{metadata !63, metadata !70, metadata !76}
 !63 = metadata !{i32 786478, metadata !6, metadata !61, metadata !"operator()", metadata !"operator()", metadata !"", i32 23, metadata !64, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !68, i32 23} ; [ DW_TAG_subprogram ]
-!64 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !65, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!64 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !65, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !65 = metadata !{null, metadata !66}
-!66 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !67} ; [ DW_TAG_pointer_type ]
-!67 = metadata !{i32 786470, null, metadata !"", null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !61} ; [ DW_TAG_const_type ]
+!66 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !67} ; [ DW_TAG_pointer_type ]
+!67 = metadata !{i32 786470, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !61} ; [ DW_TAG_const_type ]
 !68 = metadata !{metadata !69}
 !69 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !70 = metadata !{i32 786478, metadata !6, metadata !61, metadata !"~", metadata !"~", metadata !"", i32 23, metadata !71, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !74, i32 23} ; [ DW_TAG_subprogram ]
-!71 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !72, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!71 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !72, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !72 = metadata !{null, metadata !73}
-!73 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !61} ; [ DW_TAG_pointer_type ]
+!73 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !61} ; [ DW_TAG_pointer_type ]
 !74 = metadata !{metadata !75}
 !75 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !76 = metadata !{i32 786478, metadata !6, metadata !61, metadata !"", metadata !"", metadata !"", i32 23, metadata !77, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !80, i32 23} ; [ DW_TAG_subprogram ]
-!77 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !78, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!77 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !78, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !78 = metadata !{null, metadata !73, metadata !79}
 !79 = metadata !{i32 786498, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !61} ; [ DW_TAG_rvalue_reference_type ]
 !80 = metadata !{metadata !81}
@@ -162,19 +162,19 @@ entry:
 !84 = metadata !{metadata !85}
 !85 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !86 = metadata !{i32 786478, metadata !6, metadata !20, metadata !"function", metadata !"function", metadata !"", i32 6, metadata !87, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !90, i32 6} ; [ DW_TAG_subprogram ]
-!87 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !88, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!87 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !88, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !88 = metadata !{null, metadata !25, metadata !89}
 !89 = metadata !{i32 786498, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !20} ; [ DW_TAG_rvalue_reference_type ]
 !90 = metadata !{metadata !91}
 !91 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !92 = metadata !{i32 786478, metadata !6, metadata !20, metadata !"~function", metadata !"~function", metadata !"", i32 6, metadata !93, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !95, i32 6} ; [ DW_TAG_subprogram ]
-!93 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !94, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!93 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !94, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !94 = metadata !{null, metadata !25}
 !95 = metadata !{metadata !96}
 !96 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ]
 !97 = metadata !{metadata !98}
 !98 = metadata !{i32 786479, null, metadata !"T", metadata !99, null, i32 0, i32 0} ; [ DW_TAG_template_type_parameter ]
-!99 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !100, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
+!99 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !100, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
 !100 = metadata !{null}
 !101 = metadata !{metadata !102}
 !102 = metadata !{i32 786468}                     ; [ DW_TAG_base_type ]
@@ -183,7 +183,7 @@ entry:
 !105 = metadata !{i32 786468}                     ; [ DW_TAG_base_type ]
 !106 = metadata !{i32 786478, metadata !6, null, metadata !"function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:23:36> >", metadata !"function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:23:36> >", metadata !"_ZN8functionIFvvEEC2IZN17BPLFunctionWriter9writeExprEvE3$_1_0EET_", i32 8, metadata !59, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%class.function*)* @"_ZN8functionIFvvEEC2IZN17BPLFunctionWriter9writeExprEvE3$_1_0EET_", metadata !82, metadata !58, metadata !1, i32 8} ; [ DW_TAG_subprogram ]
 !107 = metadata !{i32 786478, metadata !6, null, metadata !"_M_not_empty_function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:23:36> >", metadata !"_M_not_empty_function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:23:36> >", metadata !"_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_1_0EEvRKT_", i32 3, metadata !108, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%class.anon.0*)* @"_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_1_0EEvRKT_", metadata !111, metadata !113, metadata !1, i32 3} ; [ DW_TAG_subprogram ]
-!108 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !109, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!108 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !109, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !109 = metadata !{null, metadata !110}
 !110 = metadata !{i32 786448, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !61} ; [ DW_TAG_reference_type ]
 !111 = metadata !{metadata !112}
@@ -192,7 +192,7 @@ entry:
 !114 = metadata !{i32 786434, metadata !160, null, metadata !"_Base_manager", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !115, i32 0, null, null, null} ; [ DW_TAG_class_type ] [_Base_manager] [line 1, size 8, align 8, offset 0] [def] [from ]
 !115 = metadata !{metadata !116, metadata !113}
 !116 = metadata !{i32 786478, metadata !6, metadata !114, metadata !"_M_not_empty_function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:20:36> >", metadata !"_M_not_empty_function<BPLFunctionWriter::<lambda at BPLFunctionWriter2.ii:20:36> >", metadata !"_ZN13_Base_manager21_M_not_empty_functionIZN17BPLFunctionWriter9writeExprEvE3$_0EEvRKT_", i32 3, metadata !117, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, metadata !120, i32 0, metadata !122, i32 3} ; [ DW_TAG_subprogram ]
-!117 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !118, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!117 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !118, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !118 = metadata !{null, metadata !119}
 !119 = metadata !{i32 786448, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !26} ; [ DW_TAG_reference_type ]
 !120 = metadata !{metadata !121}
@@ -208,14 +208,14 @@ entry:
 !131 = metadata !{i32 786470, null, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, metadata !132} ; [ DW_TAG_const_type ]
 !132 = metadata !{i32 786468, null, null, metadata !"bool", i32 0, i64 8, i64 8, i64 0, i32 0, i32 2} ; [ DW_TAG_base_type ]
 !133 = metadata !{i32 786689, metadata !5, metadata !"this", metadata !6, i32 16777235, metadata !134, i32 64, i32 0} ; [ DW_TAG_arg_variable ]
-!134 = metadata !{i32 786447, null, metadata !"", null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !10} ; [ DW_TAG_pointer_type ]
+!134 = metadata !{i32 786447, null, null, null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !10} ; [ DW_TAG_pointer_type ]
 !135 = metadata !{i32 19, i32 39, metadata !5, null}
 !136 = metadata !{i32 20, i32 17, metadata !137, null}
 !137 = metadata !{i32 786443, metadata !5, i32 19, i32 51, metadata !6, i32 0} ; [ DW_TAG_lexical_block ]
 !138 = metadata !{i32 23, i32 17, metadata !137, null}
 !139 = metadata !{i32 26, i32 15, metadata !137, null}
 !140 = metadata !{i32 786689, metadata !106, metadata !"this", metadata !6, i32 16777224, metadata !141, i32 64, i32 0} ; [ DW_TAG_arg_variable ]
-!141 = metadata !{i32 786447, null, metadata !"", null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !20} ; [ DW_TAG_pointer_type ]
+!141 = metadata !{i32 786447, null, null, null, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !20} ; [ DW_TAG_pointer_type ]
 !142 = metadata !{i32 8, i32 45, metadata !106, null}
 !143 = metadata !{i32 786689, metadata !106, metadata !"__f", metadata !6, i32 33554440, metadata !61, i32 0, i32 0} ; [ DW_TAG_arg_variable ]
 !144 = metadata !{i32 8, i32 63, metadata !106, null}
diff --git a/test/DebugInfo/X86/subrange-type.ll b/test/DebugInfo/X86/subrange-type.ll
index cd1d57c8ec..7fd273b7fd 100644
--- a/test/DebugInfo/X86/subrange-type.ll
+++ b/test/DebugInfo/X86/subrange-type.ll
@@ -25,7 +25,7 @@ declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
 !3 = metadata !{metadata !5}
 !5 = metadata !{i32 786478, metadata !6, metadata !6, metadata !"main", metadata !"main", metadata !"", i32 2, metadata !7, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @main, null, null, metadata !1, i32 3} ; [ DW_TAG_subprogram ] [line 2] [def] [scope 3] [main]
 !6 = metadata !{i32 786473, metadata !17} ; [ DW_TAG_file_type ]
-!7 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !8, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !8 = metadata !{metadata !9}
 !9 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
 !10 = metadata !{i32 786688, metadata !11, metadata !"i", metadata !6, i32 4, metadata !12, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [i] [line 4]
diff --git a/test/DebugInfo/dwarf-public-names.ll b/test/DebugInfo/dwarf-public-names.ll
index e9eb13d498..ee9cbd5d8d 100644
--- a/test/DebugInfo/dwarf-public-names.ll
+++ b/test/DebugInfo/dwarf-public-names.ll
@@ -92,9 +92,9 @@ attributes #1 = { nounwind readnone }
 !2 = metadata !{metadata !3, metadata !18, metadata !19, metadata !20}
 !3 = metadata !{i32 786478, metadata !4, null, metadata !"member_function", metadata !"member_function", metadata !"_ZN1C15member_functionEv", i32 9, metadata !5, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (%struct.C*)* @_ZN1C15member_functionEv, null, metadata !12, metadata !1, i32 9} ; [ DW_TAG_subprogram ] [line 9] [def] [member_function]
 !4 = metadata !{i32 786473, metadata !37} ; [ DW_TAG_file_type ]
-!5 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !6, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!5 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !6, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !6 = metadata !{null, metadata !7}
-!7 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !8} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from C]
+!7 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !8} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from C]
 !8 = metadata !{i32 786451, metadata !37, null, metadata !"C", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !9, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [C] [line 1, size 8, align 8, offset 0] [def] [from ]
 !9 = metadata !{metadata !10, metadata !12, metadata !14}
 !10 = metadata !{i32 786445, metadata !37, metadata !8, metadata !"static_member_variable", i32 4, i64 0, i64 0, i64 0, i32 4096, metadata !11, null} ; [ DW_TAG_member ] [static_member_variable] [line 4, size 0, align 0, offset 0] [static] [from int]
@@ -102,14 +102,14 @@ attributes #1 = { nounwind readnone }
 !12 = metadata !{i32 786478, metadata !4, metadata !8, metadata !"member_function", metadata !"member_function", metadata !"_ZN1C15member_functionEv", i32 2, metadata !5, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !13, i32 2} ; [ DW_TAG_subprogram ] [line 2] [member_function]
 !13 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ] [line 0, size 0, align 0, offset 0]
 !14 = metadata !{i32 786478, metadata !4, metadata !8, metadata !"static_member_function", metadata !"static_member_function", metadata !"_ZN1C22static_member_functionEv", i32 3, metadata !15, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 false, null, null, i32 0, metadata !17, i32 3} ; [ DW_TAG_subprogram ] [line 3] [static_member_function]
-!15 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!15 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !16 = metadata !{metadata !11}
 !17 = metadata !{i32 786468}                      ; [ DW_TAG_base_type ] [line 0, size 0, align 0, offset 0]
 !18 = metadata !{i32 786478, metadata !4, null, metadata !"static_member_function", metadata !"static_member_function", metadata !"_ZN1C22static_member_functionEv", i32 13, metadata !15, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @_ZN1C22static_member_functionEv, null, metadata !14, metadata !1, i32 13} ; [ DW_TAG_subprogram ] [line 13] [def] [static_member_function]
 !19 = metadata !{i32 786478, metadata !4, metadata !4, metadata !"global_function", metadata !"global_function", metadata !"_Z15global_functionv", i32 19, metadata !15, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @_Z15global_functionv, null, null, metadata !1, i32 19} ; [ DW_TAG_subprogram ] [line 19] [def] [global_function]
 !20 = metadata !{i32 786478, metadata !4, metadata !21, metadata !"global_namespace_function", metadata !"global_namespace_function", metadata !"_ZN2ns25global_namespace_functionEv", i32 24, metadata !22, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void ()* @_ZN2ns25global_namespace_functionEv, null, null, metadata !1, i32 24} ; [ DW_TAG_subprogram ] [line 24] [def] [global_namespace_function]
 !21 = metadata !{i32 786489, null, metadata !"ns", metadata !4, i32 23} ; [ DW_TAG_namespace ] [/usr2/kparzysz/s.hex/t/dwarf-public-names.cpp]
-!22 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !23, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!22 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !23, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !23 = metadata !{null}
 !24 = metadata !{metadata !25, metadata !26, metadata !27}
 !25 = metadata !{i32 786484, i32 0, metadata !8, metadata !"static_member_variable", metadata !"static_member_variable", metadata !"_ZN1C22static_member_variableE", metadata !4, i32 7, metadata !11, i32 0, i32 1, i32* @_ZN1C22static_member_variableE, metadata !10} ; [ DW_TAG_variable ] [static_member_variable] [line 7] [def]
diff --git a/test/DebugInfo/inheritance.ll b/test/DebugInfo/inheritance.ll
index dcc7c1499a..6b3ae090e1 100644
--- a/test/DebugInfo/inheritance.ll
+++ b/test/DebugInfo/inheritance.ll
@@ -110,29 +110,29 @@ declare void @_ZdlPv(i8*) nounwind
 !2 = metadata !{i32 458763, metadata !44, metadata !3, i32 0, i32 0, i32 0} ; [ DW_TAG_lexical_block ]
 !3 = metadata !{i32 458798, i32 0, metadata !4, metadata !"main", metadata !"main", metadata !"main", i32 11, metadata !5, i1 false, i1 true, i32 0, i32 0, null, i1 false, i32 0, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
 !4 = metadata !{i32 458769, metadata !44, i32 4, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 true, metadata !"", i32 0, metadata !45, metadata !45, null, null, null, metadata !""} ; [ DW_TAG_compile_unit ]
-!5 = metadata !{i32 458773, metadata !4, metadata !"", metadata !4, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !6, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!5 = metadata !{i32 458773, metadata !4, null, metadata !4, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !6, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !6 = metadata !{metadata !7}
 !7 = metadata !{i32 458788, null, metadata !4, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
 !8 = metadata !{i32 458771, metadata !44, metadata !4, metadata !"test1", i32 1, i64 64, i64 64, i64 0, i32 0, null, metadata !9, i32 0, metadata !8, null, null} ; [ DW_TAG_structure_type ] [test1] [line 1, size 64, align 64, offset 0] [def] [from ]
 !9 = metadata !{metadata !10, metadata !14, metadata !18}
 !10 = metadata !{i32 458765, metadata !44, metadata !8, metadata !"_vptr$test1", i32 1, i64 64, i64 64, i64 0, i32 0, metadata !11} ; [ DW_TAG_member ]
-!11 = metadata !{i32 458767, metadata !4, metadata !"", metadata !4, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !12} ; [ DW_TAG_pointer_type ]
+!11 = metadata !{i32 458767, metadata !4, null, metadata !4, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !12} ; [ DW_TAG_pointer_type ]
 !12 = metadata !{i32 458767, null, metadata !4, metadata !"__vtbl_ptr_type", i32 0, i64 0, i64 0, i64 0, i32 0, metadata !5} ; [ DW_TAG_pointer_type ]
 !13 = metadata !{i32 458769, metadata !46, i32 4, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 false, metadata !"", i32 0, metadata !45, metadata !45, null, null, null, metadata !""} ; [ DW_TAG_compile_unit ]
 !14 = metadata !{i32 458798, i32 0, metadata !8, metadata !"test1", metadata !"test1", metadata !"", i32 1, metadata !15, i1 false, i1 false, i32 0, i32 0, null, i1 true, i32 0, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
-!15 = metadata !{i32 458773, metadata !4, metadata !"", metadata !4, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!15 = metadata !{i32 458773, metadata !4, null, metadata !4, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !16, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !16 = metadata !{null, metadata !17}
-!17 = metadata !{i32 458767, metadata !4, metadata !"", metadata !4, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !8} ; [ DW_TAG_pointer_type ]
+!17 = metadata !{i32 458767, metadata !4, null, metadata !4, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !8} ; [ DW_TAG_pointer_type ]
 !18 = metadata !{i32 458798, i32 0, metadata !8, metadata !"~test1", metadata !"~test1", metadata !"", i32 4, metadata !19, i1 false, i1 false, i32 1, i32 0, metadata !8, i1 false, i32 0, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
-!19 = metadata !{i32 458773, metadata !4, metadata !"", metadata !4, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !20, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!19 = metadata !{i32 458773, metadata !4, null, metadata !4, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !20, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !20 = metadata !{null, metadata !17, metadata !7}
 !21 = metadata !{i32 11, i32 0, metadata !1, null}
 !22 = metadata !{i32 13, i32 0, metadata !1, null}
 !23 = metadata !{i32 14, i32 0, metadata !1, null}
 !24 = metadata !{i32 459009, metadata !25, metadata !"this", metadata !4, i32 13, metadata !26} ; [ DW_TAG_arg_variable ]
 !25 = metadata !{i32 458798, i32 0, metadata !4, metadata !"test1", metadata !"test1", metadata !"_ZN5test1C1Ev", i32 1, metadata !15, i1 false, i1 true, i32 0, i32 0, null, i1 false, i32 0, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
-!26 = metadata !{i32 458790, metadata !4, metadata !"", metadata !4, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !27} ; [ DW_TAG_const_type ]
-!27 = metadata !{i32 458767, metadata !4, metadata !"", metadata !4, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !8} ; [ DW_TAG_pointer_type ]
+!26 = metadata !{i32 458790, metadata !4, null, metadata !4, i32 0, i64 64, i64 64, i64 0, i32 64, metadata !27} ; [ DW_TAG_const_type ]
+!27 = metadata !{i32 458767, metadata !4, null, metadata !4, i32 0, i64 64, i64 64, i64 0, i32 0, metadata !8} ; [ DW_TAG_pointer_type ]
 !28 = metadata !{i32 1, i32 0, metadata !25, null}
 !29 = metadata !{i32 1, i32 0, metadata !30, null}
 !30 = metadata !{i32 458763, metadata !44, metadata !31, i32 0, i32 0, i32 0} ; [ DW_TAG_lexical_block ]
diff --git a/test/DebugInfo/member-pointers.ll b/test/DebugInfo/member-pointers.ll
index c562b71dfd..42b57f572b 100644
--- a/test/DebugInfo/member-pointers.ll
+++ b/test/DebugInfo/member-pointers.ll
@@ -32,7 +32,7 @@
 !9 = metadata !{i32 786451, metadata !15, null, metadata !"S", i32 1, i64 8, i64 8, i32 0, i32 0, null, metadata !1, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [S] [line 1, size 8, align 8, offset 0] [def] [from ]
 !10 = metadata !{i32 786484, i32 0, null, metadata !"y", metadata !"y", metadata !"", metadata !6, i32 5, metadata !11, i32 0, i32 1, { i64, i64 }* @y, null} ; [ DW_TAG_variable ] [y] [line 5] [def]
 !11 = metadata !{i32 786463, null, null, null, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !12, metadata !9} ; [ DW_TAG_ptr_to_member_type ] [line 0, size 0, align 0, offset 0] [from ]
-!12 = metadata !{i32 786453, i32 0, metadata !"", i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !13, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!12 = metadata !{i32 786453, i32 0, null, i32 0, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !13, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
 !13 = metadata !{null, metadata !14, metadata !8}
-!14 = metadata !{i32 786447, i32 0, metadata !"", i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !9} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from S]
+!14 = metadata !{i32 786447, i32 0, null, i32 0, i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !9} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from S]
 !15 = metadata !{metadata !"simple.cpp", metadata !"/home/blaikie/Development/scratch"}