DebugInfo: Move new hierarchy into place

Move the specialized metadata nodes for the new debug info hierarchy
into place, finishing off PR22464.  I've done bootstraps (and all that)
and I'm confident this commit is NFC as far as DWARF output is
concerned.  Let me know if I'm wrong :).

The code changes are fairly mechanical:

  - Bumped the "Debug Info Version".
  - `DIBuilder` now creates the appropriate subclass of `MDNode`.
  - Subclasses of DIDescriptor now expect to hold their "MD"
    counterparts (e.g., `DIBasicType` expects `MDBasicType`).
  - Deleted a ton of dead code in `AsmWriter.cpp` and `DebugInfo.cpp`
    for printing comments.
  - Big update to LangRef to describe the nodes in the new hierarchy.
    Feel free to make it better.

Testcase changes are enormous.  There's an accompanying clang commit on
its way.

If you have out-of-tree debug info testcases, I just broke your build.

  - `upgrade-specialized-nodes.sh` is attached to PR22564.  I used it to
    update all the IR testcases.
  - Unfortunately I failed to find way to script the updates to CHECK
    lines, so I updated all of these by hand.  This was fairly painful,
    since the old CHECKs are difficult to reason about.  That's one of
    the benefits of the new hierarchy.

This work isn't quite finished, BTW.  The `DIDescriptor` subclasses are
almost empty wrappers, but not quite: they still have loose casting
checks (see the `RETURN_FROM_RAW()` macro).  Once they're completely
gutted, I'll rename the "MD" classes to "DI" and kill the wrappers.  I
also expect to make a few schema changes now that it's easier to reason
about everything.

llvm-svn: 231082

18 files changed, 587 insertions, 587 deletions

diff --git a/llvm/test/CodeGen/ARM/2009-10-16-Scope.ll b/llvm/test/CodeGen/ARM/2009-10-16-Scope.ll
index de05644fc90..9caa785ee36 100644
--- a/llvm/test/CodeGen/ARM/2009-10-16-Scope.ll
+++ b/llvm/test/CodeGen/ARM/2009-10-16-Scope.ll
@@ -9,7 +9,7 @@ entry:
   br label %do.body, !dbg !0
 
 do.body:                                          ; preds = %entry
-  call void @llvm.dbg.declare(metadata i32* %count_, metadata !4, metadata !{!"0x102"})
+  call void @llvm.dbg.declare(metadata i32* %count_, metadata !4, metadata !MDExpression())
   %conv = ptrtoint i32* %count_ to i32, !dbg !0   ; <i32> [#uses=1]
   %call = call i32 @foo(i32 %conv) ssp, !dbg !0   ; <i32> [#uses=0]
   br label %do.end, !dbg !0
@@ -23,12 +23,12 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
 declare i32 @foo(i32) ssp
 
 !0 = !MDLocation(line: 5, column: 2, scope: !1)
-!1 = !{!"0xb\001\001\000", null, !2}; [DW_TAG_lexical_block ]
-!2 = !{!"0x2e\00bar\00bar\00bar\004\000\001\000\006\000\000\000", i32 0, !3, null, null, null, null, null, null}; [DW_TAG_subprogram ]
-!3 = !{!"0x11\0012\00clang 1.1\001\00\000\00\000", !8, null, !9, null, null, null}; [DW_TAG_compile_unit ]
-!4 = !{!"0x100\00count_\005\000", !5, !3, !6}; [ DW_TAG_auto_variable ]
-!5 = !{!"0xb\001\001\000", null, !1}; [DW_TAG_lexical_block ]
-!6 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !3}; [DW_TAG_base_type ]
+!1 = distinct !MDLexicalBlock(line: 1, column: 1, file: null, scope: !2)
+!2 = !MDSubprogram(name: "bar", linkageName: "bar", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scope: !3)
+!3 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang 1.1", isOptimized: true, emissionKind: 0, file: !8, retainedTypes: !9)
+!4 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "count_", line: 5, scope: !5, file: !3, type: !6)
+!5 = distinct !MDLexicalBlock(line: 1, column: 1, file: null, scope: !1)
+!6 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !7 = !MDLocation(line: 6, column: 1, scope: !2)
-!8 = !{!"genmodes.i", !"/Users/yash/Downloads"}
+!8 = !MDFile(filename: "genmodes.i", directory: "/Users/yash/Downloads")
 !9 = !{i32 0}
diff --git a/llvm/test/CodeGen/ARM/2010-04-15-ScavengerDebugValue.ll b/llvm/test/CodeGen/ARM/2010-04-15-ScavengerDebugValue.ll
index 6f7db935218..8df3aaf83c2 100644
--- a/llvm/test/CodeGen/ARM/2010-04-15-ScavengerDebugValue.ll
+++ b/llvm/test/CodeGen/ARM/2010-04-15-ScavengerDebugValue.ll
@@ -5,7 +5,7 @@ target triple = "armv4t-apple-darwin10"
 
 define hidden i32 @__addvsi3(i32 %a, i32 %b) nounwind {
 entry:
-  tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !0, metadata !{!"0x102"})
+  tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !0, metadata !MDExpression())
   %0 = add nsw i32 %b, %a, !dbg !9                ; <i32> [#uses=1]
   ret i32 %0, !dbg !11
 }
@@ -14,19 +14,19 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 
 !llvm.dbg.cu = !{!3}
 !llvm.module.flags = !{!15}
-!0 = !{!"0x101\00b\0093\000", !1, !2, !6} ; [ DW_TAG_arg_variable ]
-!1 = !{!"0x2e\00__addvsi3\00__addvsi3\00__addvsi3\0094\000\001\000\006\000\000\000", !12, null, !4, null, null, null, null, null} ; [ DW_TAG_subprogram ]
-!2 = !{!"0x29", !12} ; [ DW_TAG_file_type ]
-!12 = !{!"libgcc2.c", !"/Users/bwilson/local/nightly/test-2010-04-14/build/llvmgcc.roots/llvmgcc~obj/src/gcc"}
-!3 = !{!"0x11\001\004.2.1 (Based on Apple Inc. build 5658) (LLVM build 00)\001\00\000\00\000", !12, !13, !13, !14, null, null} ; [ DW_TAG_compile_unit ]
-!4 = !{!"0x15\00\000\000\000\000\000\000", !12, !2, null, !5, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!0 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "b", line: 93, arg: 0, scope: !1, file: !2, type: !6)
+!1 = !MDSubprogram(name: "__addvsi3", linkageName: "__addvsi3", line: 94, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !12, scope: null, type: !4)
+!2 = !MDFile(filename: "libgcc2.c", directory: "/Users/bwilson/local/nightly/test-2010-04-14/build/llvmgcc.roots/llvmgcc~obj/src/gcc")
+!12 = !MDFile(filename: "libgcc2.c", directory: "/Users/bwilson/local/nightly/test-2010-04-14/build/llvmgcc.roots/llvmgcc~obj/src/gcc")
+!3 = !MDCompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build 00)", isOptimized: true, emissionKind: 0, file: !12, enums: !13, retainedTypes: !13, subprograms: !14)
+!4 = !MDSubroutineType(types: !5)
 !5 = !{!6, !6, !6}
-!6 = !{!"0x16\00SItype\00152\000\000\000\000", !12, null, !8} ; [ DW_TAG_typedef ]
-!7 = !{!"0x29", !"libgcc2.h", !"/Users/bwilson/local/nightly/test-2010-04-14/build/llvmgcc.roots/llvmgcc~obj/src/gcc", !3} ; [ DW_TAG_file_type ]
-!8 = !{!"0x24\00int\000\0032\0032\000\000\005", !12, !2} ; [ DW_TAG_base_type ]
+!6 = !MDDerivedType(tag: DW_TAG_typedef, name: "SItype", line: 152, file: !12, baseType: !8)
+!7 = !MDFile(filename: "libgcc2.h", directory: "/Users/bwilson/local/nightly/test-2010-04-14/build/llvmgcc.roots/llvmgcc~obj/src/gcc")
+!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !MDLocation(line: 95, scope: !10)
-!10 = !{!"0xb\0094\000\000", !12, !1} ; [ DW_TAG_lexical_block ]
+!10 = distinct !MDLexicalBlock(line: 94, column: 0, file: !12, scope: !1)
 !11 = !MDLocation(line: 100, scope: !10)
 !13 = !{i32 0}
 !14 = !{!1}
-!15 = !{i32 1, !"Debug Info Version", i32 2}
+!15 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/2010-06-25-Thumb2ITInvalidIterator.ll b/llvm/test/CodeGen/ARM/2010-06-25-Thumb2ITInvalidIterator.ll
index b341a832042..52c39a48091 100644
--- a/llvm/test/CodeGen/ARM/2010-06-25-Thumb2ITInvalidIterator.ll
+++ b/llvm/test/CodeGen/ARM/2010-06-25-Thumb2ITInvalidIterator.ll
@@ -7,16 +7,16 @@ target triple = "thumbv7-apple-darwin3.0.0-iphoneos"
 
 define void @x0(i8* nocapture %buf, i32 %nbytes) nounwind optsize {
 entry:
-  tail call void @llvm.dbg.value(metadata i8* %buf, i64 0, metadata !0, metadata !{!"0x102"}), !dbg !15
-  tail call void @llvm.dbg.value(metadata i32 %nbytes, i64 0, metadata !8, metadata !{!"0x102"}), !dbg !16
+  tail call void @llvm.dbg.value(metadata i8* %buf, i64 0, metadata !0, metadata !MDExpression()), !dbg !15
+  tail call void @llvm.dbg.value(metadata i32 %nbytes, i64 0, metadata !8, metadata !MDExpression()), !dbg !16
   %tmp = load i32, i32* @length, !dbg !17              ; <i32> [#uses=3]
   %cmp = icmp eq i32 %tmp, -1, !dbg !17           ; <i1> [#uses=1]
   %cmp.not = xor i1 %cmp, true                    ; <i1> [#uses=1]
   %cmp3 = icmp ult i32 %tmp, %nbytes, !dbg !17    ; <i1> [#uses=1]
   %or.cond = and i1 %cmp.not, %cmp3               ; <i1> [#uses=1]
-  tail call void @llvm.dbg.value(metadata i32 %tmp, i64 0, metadata !8, metadata !{!"0x102"}), !dbg !17
+  tail call void @llvm.dbg.value(metadata i32 %tmp, i64 0, metadata !8, metadata !MDExpression()), !dbg !17
   %nbytes.addr.0 = select i1 %or.cond, i32 %tmp, i32 %nbytes ; <i32> [#uses=1]
-  tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !10, metadata !{!"0x102"}), !dbg !19
+  tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !10, metadata !MDExpression()), !dbg !19
   br label %while.cond, !dbg !20
 
 while.cond:                                       ; preds = %while.body, %entry
@@ -47,21 +47,21 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !llvm.dbg.lv.fn = !{!0, !8, !10, !12}
 !llvm.dbg.gv = !{!14}
 
-!0 = !{!"0x101\00buf\004\000", !1, !2, !6} ; [ DW_TAG_arg_variable ]
-!1 = !{!"0x2e\00x0\00x0\00x0\005\000\001\000\006\000\000\000", !26, null, !4, null, null, null, null, null} ; [ DW_TAG_subprogram ]
-!2 = !{!"0x29", !26} ; [ DW_TAG_file_type ]
-!3 = !{!"0x11\0012\00clang 2.0\001\00\00\00\00", !26, null, null, null, null, null} ; [ DW_TAG_compile_unit ]
-!4 = !{!"0x15\00\000\000\000\000\000\000", !26, !2, null, !5, null} ; [ DW_TAG_subroutine_type ]
+!0 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "buf", line: 4, arg: 0, scope: !1, file: !2, type: !6)
+!1 = !MDSubprogram(name: "x0", linkageName: "x0", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !26, scope: null, type: !4)
+!2 = !MDFile(filename: "t.c", directory: "/private/tmp")
+!3 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang 2.0", isOptimized: true, file: !26)
+!4 = !MDSubroutineType(types: !5)
 !5 = !{null}
-!6 = !{!"0xf\00\000\0032\0032\000\000", !26, !2, !7} ; [ DW_TAG_pointer_type ]
-!7 = !{!"0x24\00unsigned char\000\008\008\000\000\008", !26, !2} ; [ DW_TAG_base_type ]
-!8 = !{!"0x101\00nbytes\004\000", !1, !2, !9} ; [ DW_TAG_arg_variable ]
-!9 = !{!"0x24\00unsigned long\000\0032\0032\000\000\007", !26, !2} ; [ DW_TAG_base_type ]
-!10 = !{!"0x100\00nread\006\000", !11, !2, !9} ; [ DW_TAG_auto_variable ]
-!11 = !{!"0xb\005\001\000", !26, !1} ; [ DW_TAG_lexical_block ]
-!12 = !{!"0x100\00c\007\000", !11, !2, !13} ; [ DW_TAG_auto_variable ]
-!13 = !{!"0x24\00int\000\0032\0032\000\000\005", !26, !2} ; [ DW_TAG_base_type ]
-!14 = !{!"0x34\00length\00length\00length\001\000\001", !2, !2, !13, i32* @length} ; [ DW_TAG_variable ]
+!6 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !26, scope: !2, baseType: !7)
+!7 = !MDBasicType(tag: DW_TAG_base_type, name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
+!8 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "nbytes", line: 4, arg: 0, scope: !1, file: !2, type: !9)
+!9 = !MDBasicType(tag: DW_TAG_base_type, name: "unsigned long", size: 32, align: 32, encoding: DW_ATE_unsigned)
+!10 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "nread", line: 6, scope: !11, file: !2, type: !9)
+!11 = distinct !MDLexicalBlock(line: 5, column: 1, file: !26, scope: !1)
+!12 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "c", line: 7, scope: !11, file: !2, type: !13)
+!13 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!14 = !MDGlobalVariable(name: "length", linkageName: "length", line: 1, isLocal: false, isDefinition: true, scope: !2, file: !2, type: !13, variable: i32* @length)
 !15 = !MDLocation(line: 4, column: 24, scope: !1)
 !16 = !MDLocation(line: 4, column: 43, scope: !1)
 !17 = !MDLocation(line: 9, column: 2, scope: !11)
@@ -69,8 +69,8 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !19 = !MDLocation(line: 10, column: 2, scope: !11)
 !20 = !MDLocation(line: 11, column: 2, scope: !11)
 !21 = !MDLocation(line: 12, column: 3, scope: !22)
-!22 = !{!"0xb\0011\0045\000", !26, !11} ; [ DW_TAG_lexical_block ]
+!22 = distinct !MDLexicalBlock(line: 11, column: 45, file: !26, scope: !11)
 !23 = !MDLocation(line: 13, column: 3, scope: !22)
 !24 = !MDLocation(line: 14, column: 2, scope: !22)
 !25 = !MDLocation(line: 15, column: 1, scope: !11)
-!26 = !{!"t.c", !"/private/tmp"}
+!26 = !MDFile(filename: "t.c", directory: "/private/tmp")
diff --git a/llvm/test/CodeGen/ARM/2010-08-04-StackVariable.ll b/llvm/test/CodeGen/ARM/2010-08-04-StackVariable.ll
index 5d30995ebbe..a48aef33b16 100644
--- a/llvm/test/CodeGen/ARM/2010-08-04-StackVariable.ll
+++ b/llvm/test/CodeGen/ARM/2010-08-04-StackVariable.ll
@@ -6,8 +6,8 @@
 define i32 @_Z3fooi4SVal(i32 %i, %struct.SVal* noalias %location) nounwind ssp {
 entry:
   %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
-  call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !23, metadata !{!"0x102"}), !dbg !24
-  call void @llvm.dbg.value(metadata %struct.SVal* %location, i64 0, metadata !25, metadata !{!"0x102"}), !dbg !24
+  call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !23, metadata !MDExpression()), !dbg !24
+  call void @llvm.dbg.value(metadata %struct.SVal* %location, i64 0, metadata !25, metadata !MDExpression()), !dbg !24
   %0 = icmp ne i32 %i, 0, !dbg !27                ; <i1> [#uses=1]
   br i1 %0, label %bb, label %bb1, !dbg !27
 
@@ -34,7 +34,7 @@ return:                                           ; preds = %bb2
 define linkonce_odr void @_ZN4SValC1Ev(%struct.SVal* %this) nounwind ssp align 2  {
 entry:
   %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
-  call void @llvm.dbg.value(metadata %struct.SVal* %this, i64 0, metadata !31, metadata !{!"0x102"}), !dbg !34
+  call void @llvm.dbg.value(metadata %struct.SVal* %this, i64 0, metadata !31, metadata !MDExpression()), !dbg !34
   %0 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 0, !dbg !34 ; <i8**> [#uses=1]
   store i8* null, i8** %0, align 8, !dbg !34
   %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %this, i32 0, i32 1, !dbg !34 ; <i32*> [#uses=1]
@@ -52,7 +52,7 @@ entry:
   %0 = alloca %struct.SVal                        ; <%struct.SVal*> [#uses=3]
   %v = alloca %struct.SVal                        ; <%struct.SVal*> [#uses=4]
   %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
-  call void @llvm.dbg.declare(metadata %struct.SVal* %v, metadata !38, metadata !{!"0x102"}), !dbg !41
+  call void @llvm.dbg.declare(metadata %struct.SVal* %v, metadata !38, metadata !MDExpression()), !dbg !41
   call void @_ZN4SValC1Ev(%struct.SVal* %v) nounwind, !dbg !41
   %1 = getelementptr inbounds %struct.SVal, %struct.SVal* %v, i32 0, i32 1, !dbg !42 ; <i32*> [#uses=1]
   store i32 1, i32* %1, align 8, !dbg !42
@@ -65,7 +65,7 @@ entry:
   %7 = load i32, i32* %6, align 8, !dbg !43            ; <i32> [#uses=1]
   store i32 %7, i32* %5, align 8, !dbg !43
   %8 = call i32 @_Z3fooi4SVal(i32 2, %struct.SVal* noalias %0) nounwind, !dbg !43 ; <i32> [#uses=0]
-  call void @llvm.dbg.value(metadata i32 %8, i64 0, metadata !44, metadata !{!"0x102"}), !dbg !43
+  call void @llvm.dbg.value(metadata i32 %8, i64 0, metadata !44, metadata !MDExpression()), !dbg !43
   br label %return, !dbg !45
 
 return:                                           ; preds = %entry
@@ -77,53 +77,53 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !llvm.dbg.cu = !{!3}
 !llvm.module.flags = !{!49}
 
-!0 = !{!"0x2e\00SVal\00SVal\00\0011\000\000\000\006\000\000\000", !48, !1, !14, null, null, null, null, null} ; [ DW_TAG_subprogram ]
-!1 = !{!"0x13\00SVal\001\00128\0064\000\000\000", !48, null, null, !4, null, null, null} ; [ DW_TAG_structure_type ] [SVal] [line 1, size 128, align 64, offset 0] [def] [from ]
-!2 = !{!"0x29", !48} ; [ DW_TAG_file_type ]
-!3 = !{!"0x11\004\004.2.1 (Based on Apple Inc. build 5658) (LLVM build)\000\00\000\00\001", !48, !47, !47, !46, !47,  !47} ; [ DW_TAG_compile_unit ]
+!0 = !MDSubprogram(name: "SVal", line: 11, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, file: !48, scope: !1, type: !14)
+!1 = !MDCompositeType(tag: DW_TAG_structure_type, name: "SVal", line: 1, size: 128, align: 64, file: !48, elements: !4)
+!2 = !MDFile(filename: "small.cc", directory: "/Users/manav/R8248330")
+!3 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: false, emissionKind: 1, file: !48, enums: !47, retainedTypes: !47, subprograms: !46, globals: !47, imports:  !47)
 !4 = !{!5, !7, !0, !9}
-!5 = !{!"0xd\00Data\007\0064\0064\000\000", !48, !1, !6} ; [ DW_TAG_member ]
-!6 = !{!"0xf\00\000\0064\0064\000\000", !48, null, null} ; [ DW_TAG_pointer_type ]
-!7 = !{!"0xd\00Kind\008\0032\0032\0064\000", !48, !1, !8} ; [ DW_TAG_member ]
-!8 = !{!"0x24\00unsigned int\000\0032\0032\000\000\007", !48, null} ; [ DW_TAG_base_type ]
-!9 = !{!"0x2e\00~SVal\00~SVal\00\0012\000\000\000\006\000\000\000", !48, !1, !10, null, null, null, null, null} ; [ DW_TAG_subprogram ]
-!10 = !{!"0x15\00\000\000\000\000\000\000", !48, null, null, !11, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!5 = !MDDerivedType(tag: DW_TAG_member, name: "Data", line: 7, size: 64, align: 64, file: !48, scope: !1, baseType: !6)
+!6 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !48, baseType: null)
+!7 = !MDDerivedType(tag: DW_TAG_member, name: "Kind", line: 8, size: 32, align: 32, offset: 64, file: !48, scope: !1, baseType: !8)
+!8 = !MDBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
+!9 = !MDSubprogram(name: "~SVal", line: 12, isLocal: false, isDefinition: false, virtualIndex: 6, isOptimized: false, file: !48, scope: !1, type: !10)
+!10 = !MDSubroutineType(types: !11)
 !11 = !{null, !12, !13}
-!12 = !{!"0xf\00\000\0064\0064\000\0064", !48, null, !1} ; [ DW_TAG_pointer_type ]
-!13 = !{!"0x24\00int\000\0032\0032\000\000\005", !48, null} ; [ DW_TAG_base_type ]
-!14 = !{!"0x15\00\000\000\000\000\000\000", !48, null, null, !15, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!12 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, file: !48, baseType: !1)
+!13 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!14 = !MDSubroutineType(types: !15)
 !15 = !{null, !12}
-!16 = !{!"0x2e\00SVal\00SVal\00_ZN4SValC1Ev\0011\000\001\000\006\000\000\000", !48, !1, !14, null, void (%struct.SVal*)* @_ZN4SValC1Ev, null, null, null} ; [ DW_TAG_subprogram ]
-!17 = !{!"0x2e\00foo\00foo\00_Z3fooi4SVal\0016\000\001\000\006\000\000\000", !48, !2, !18, null, i32 (i32, %struct.SVal*)* @_Z3fooi4SVal, null, null, null} ; [ DW_TAG_subprogram ]
-!18 = !{!"0x15\00\000\000\000\000\000\000", !48, null, null, !19, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!16 = !MDSubprogram(name: "SVal", linkageName: "_ZN4SValC1Ev", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !48, scope: !1, type: !14, function: void (%struct.SVal*)* @_ZN4SValC1Ev)
+!17 = !MDSubprogram(name: "foo", linkageName: "_Z3fooi4SVal", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !48, scope: !2, type: !18, function: i32 (i32, %struct.SVal*)* @_Z3fooi4SVal)
+!18 = !MDSubroutineType(types: !19)
 !19 = !{!13, !13, !1}
-!20 = !{!"0x2e\00main\00main\00main\0023\000\001\000\006\000\000\000", !48, !2, !21, null, i32 ()* @main, null, null, null} ; [ DW_TAG_subprogram ]
-!21 = !{!"0x15\00\000\000\000\000\000\000", !48, null, null, !22, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!20 = !MDSubprogram(name: "main", linkageName: "main", line: 23, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !48, scope: !2, type: !21, function: i32 ()* @main)
+!21 = !MDSubroutineType(types: !22)
 !22 = !{!13}
-!23 = !{!"0x101\00i\0016\000", !17, !2, !13} ; [ DW_TAG_arg_variable ]
+!23 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "i", line: 16, arg: 0, scope: !17, file: !2, type: !13)
 !24 = !MDLocation(line: 16, scope: !17)
-!25 = !{!"0x101\00location\0016\000", !17, !2, !26} ; [ DW_TAG_arg_variable ]
-!26 = !{!"0x10\00SVal\000\0064\0064\000\000", !48, !2, !1} ; [ DW_TAG_reference_type ]
+!25 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "location", line: 16, arg: 0, scope: !17, file: !2, type: !26)
+!26 = !MDDerivedType(tag: DW_TAG_reference_type, name: "SVal", size: 64, align: 64, file: !48, scope: !2, baseType: !1)
 !27 = !MDLocation(line: 17, scope: !28)
-!28 = !{!"0xb\0016\000\002", !2, !17} ; [ DW_TAG_lexical_block ]
+!28 = distinct !MDLexicalBlock(line: 16, column: 0, file: !2, scope: !17)
 !29 = !MDLocation(line: 18, scope: !28)
 !30 = !MDLocation(line: 20, scope: !28)
-!31 = !{!"0x101\00this\0011\000", !16, !2, !32} ; [ DW_TAG_arg_variable ]
-!32 = !{!"0x26\00\000\0064\0064\000\0064", !48, !2, !33} ; [ DW_TAG_const_type ]
-!33 = !{!"0xf\00\000\0064\0064\000\000", !48, !2, !1} ; [ DW_TAG_pointer_type ]
+!31 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", line: 11, arg: 0, scope: !16, file: !2, type: !32)
+!32 = !MDDerivedType(tag: DW_TAG_const_type, size: 64, align: 64, flags: DIFlagArtificial, file: !48, scope: !2, baseType: !33)
+!33 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !48, scope: !2, baseType: !1)
 !34 = !MDLocation(line: 11, scope: !16)
 !35 = !MDLocation(line: 11, scope: !36)
-!36 = !{!"0xb\0011\000\001", !48, !37} ; [ DW_TAG_lexical_block ]
-!37 = !{!"0xb\0011\000\000", !48, !16} ; [ DW_TAG_lexical_block ]
-!38 = !{!"0x100\00v\0024\000", !39, !2, !1} ; [ DW_TAG_auto_variable ]
-!39 = !{!"0xb\0023\000\004", !48, !40} ; [ DW_TAG_lexical_block ]
-!40 = !{!"0xb\0023\000\003", !48, !20} ; [ DW_TAG_lexical_block ]
+!36 = distinct !MDLexicalBlock(line: 11, column: 0, file: !48, scope: !37)
+!37 = distinct !MDLexicalBlock(line: 11, column: 0, file: !48, scope: !16)
+!38 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "v", line: 24, scope: !39, file: !2, type: !1)
+!39 = distinct !MDLexicalBlock(line: 23, column: 0, file: !48, scope: !40)
+!40 = distinct !MDLexicalBlock(line: 23, column: 0, file: !48, scope: !20)
 !41 = !MDLocation(line: 24, scope: !39)
 !42 = !MDLocation(line: 25, scope: !39)
 !43 = !MDLocation(line: 26, scope: !39)
-!44 = !{!"0x100\00k\0026\000", !39, !2, !13} ; [ DW_TAG_auto_variable ]
+!44 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "k", line: 26, scope: !39, file: !2, type: !13)
 !45 = !MDLocation(line: 27, scope: !39)
 !46 = !{!16, !17, !20}
 !47 = !{}
-!48 = !{!"small.cc", !"/Users/manav/R8248330"}
-!49 = !{i32 1, !"Debug Info Version", i32 2}
+!48 = !MDFile(filename: "small.cc", directory: "/Users/manav/R8248330")
+!49 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll b/llvm/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll
index 5dc07e4730e..b361c13941c 100644
--- a/llvm/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll
+++ b/llvm/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll
@@ -30,9 +30,9 @@ target triple = "thumbv7-apple-darwin10"
 
 define zeroext i8 @get1(i8 zeroext %a) nounwind optsize {
 entry:
-  tail call void @llvm.dbg.value(metadata i8 %a, i64 0, metadata !10, metadata !{!"0x102"}), !dbg !30
+  tail call void @llvm.dbg.value(metadata i8 %a, i64 0, metadata !10, metadata !MDExpression()), !dbg !30
   %0 = load i8, i8* @x1, align 4, !dbg !30
-  tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !11, metadata !{!"0x102"}), !dbg !30
+  tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !11, metadata !MDExpression()), !dbg !30
   store i8 %a, i8* @x1, align 4, !dbg !30
   ret i8 %0, !dbg !31
 }
@@ -41,36 +41,36 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 
 define zeroext i8 @get2(i8 zeroext %a) nounwind optsize {
 entry:
-  tail call void @llvm.dbg.value(metadata i8 %a, i64 0, metadata !18, metadata !{!"0x102"}), !dbg !32
+  tail call void @llvm.dbg.value(metadata i8 %a, i64 0, metadata !18, metadata !MDExpression()), !dbg !32
   %0 = load i8, i8* @x2, align 4, !dbg !32
-  tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !19, metadata !{!"0x102"}), !dbg !32
+  tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !19, metadata !MDExpression()), !dbg !32
   store i8 %a, i8* @x2, align 4, !dbg !32
   ret i8 %0, !dbg !33
 }
 
 define zeroext i8 @get3(i8 zeroext %a) nounwind optsize {
 entry:
-  tail call void @llvm.dbg.value(metadata i8 %a, i64 0, metadata !21, metadata !{!"0x102"}), !dbg !34
+  tail call void @llvm.dbg.value(metadata i8 %a, i64 0, metadata !21, metadata !MDExpression()), !dbg !34
   %0 = load i8, i8* @x3, align 4, !dbg !34
-  tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !22, metadata !{!"0x102"}), !dbg !34
+  tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !22, metadata !MDExpression()), !dbg !34
   store i8 %a, i8* @x3, align 4, !dbg !34
   ret i8 %0, !dbg !35
 }
 
 define zeroext i8 @get4(i8 zeroext %a) nounwind optsize {
 entry:
-  tail call void @llvm.dbg.value(metadata i8 %a, i64 0, metadata !24, metadata !{!"0x102"}), !dbg !36
+  tail call void @llvm.dbg.value(metadata i8 %a, i64 0, metadata !24, metadata !MDExpression()), !dbg !36
   %0 = load i8, i8* @x4, align 4, !dbg !36
-  tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !25, metadata !{!"0x102"}), !dbg !36
+  tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !25, metadata !MDExpression()), !dbg !36
   store i8 %a, i8* @x4, align 4, !dbg !36
   ret i8 %0, !dbg !37
 }
 
 define zeroext i8 @get5(i8 zeroext %a) nounwind optsize {
 entry:
-  tail call void @llvm.dbg.value(metadata i8 %a, i64 0, metadata !27, metadata !{!"0x102"}), !dbg !38
+  tail call void @llvm.dbg.value(metadata i8 %a, i64 0, metadata !27, metadata !MDExpression()), !dbg !38
   %0 = load i8, i8* @x5, align 4, !dbg !38
-  tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !28, metadata !{!"0x102"}), !dbg !38
+  tail call void @llvm.dbg.value(metadata i8 %0, i64 0, metadata !28, metadata !MDExpression()), !dbg !38
   store i8 %a, i8* @x5, align 4, !dbg !38
   ret i8 %0, !dbg !39
 }
@@ -78,36 +78,36 @@ entry:
 !llvm.dbg.cu = !{!2}
 !llvm.module.flags = !{!49}
 
-!0 = !{!"0x2e\00get1\00get1\00get1\004\000\001\000\006\00256\001\004", !47, !1, !3, null, i8 (i8)* @get1, null, null, !42} ; [ DW_TAG_subprogram ]
-!1 = !{!"0x29", !47} ; [ DW_TAG_file_type ]
-!2 = !{!"0x11\001\004.2.1 (Based on Apple Inc. build 5658) (LLVM build 2369.8)\001\00\000\00\000", !47, !48, !48, !40, !41,  !48} ; [ DW_TAG_compile_unit ]
-!3 = !{!"0x15\00\000\000\000\000\000\000", !47, !1, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!0 = !MDSubprogram(name: "get1", linkageName: "get1", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 4, file: !47, scope: !1, type: !3, function: i8 (i8)* @get1, variables: !42)
+!1 = !MDFile(filename: "foo.c", directory: "/tmp/")
+!2 = !MDCompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2369.8)", isOptimized: true, emissionKind: 0, file: !47, enums: !48, retainedTypes: !48, subprograms: !40, globals: !41, imports:  !48)
+!3 = !MDSubroutineType(types: !4)
 !4 = !{!5, !5}
-!5 = !{!"0x24\00_Bool\000\008\008\000\000\002", !47, !1} ; [ DW_TAG_base_type ]
-!6 = !{!"0x2e\00get2\00get2\00get2\007\000\001\000\006\00256\001\007", !47, !1, !3, null, i8 (i8)* @get2, null, null, !43} ; [ DW_TAG_subprogram ]
-!7 = !{!"0x2e\00get3\00get3\00get3\0010\000\001\000\006\00256\001\0010", !47, !1, !3, null, i8 (i8)* @get3, null, null, !44} ; [ DW_TAG_subprogram ]
-!8 = !{!"0x2e\00get4\00get4\00get4\0013\000\001\000\006\00256\001\0013", !47, !1, !3, null, i8 (i8)* @get4, null, null, !45} ; [ DW_TAG_subprogram ]
-!9 = !{!"0x2e\00get5\00get5\00get5\0016\000\001\000\006\00256\001\0016", !47, !1, !3, null, i8 (i8)* @get5, null, null, !46} ; [ DW_TAG_subprogram ]
-!10 = !{!"0x101\00a\004\000", !0, !1, !5} ; [ DW_TAG_arg_variable ]
-!11 = !{!"0x100\00b\004\000", !12, !1, !5} ; [ DW_TAG_auto_variable ]
-!12 = !{!"0xb\004\000\000", !47, !0} ; [ DW_TAG_lexical_block ]
-!13 = !{!"0x34\00x1\00x1\00\003\001\001", !1, !1, !5, i8* @x1, null} ; [ DW_TAG_variable ]
-!14 = !{!"0x34\00x2\00x2\00\006\001\001", !1, !1, !5, i8* @x2, null} ; [ DW_TAG_variable ]
-!15 = !{!"0x34\00x3\00x3\00\009\001\001", !1, !1, !5, i8* @x3, null} ; [ DW_TAG_variable ]
-!16 = !{!"0x34\00x4\00x4\00\0012\001\001", !1, !1, !5, i8* @x4, null} ; [ DW_TAG_variable ]
-!17 = !{!"0x34\00x5\00x5\00\0015\000\001", !1, !1, !5, i8* @x5, null} ; [ DW_TAG_variable ]
-!18 = !{!"0x101\00a\007\000", !6, !1, !5} ; [ DW_TAG_arg_variable ]
-!19 = !{!"0x100\00b\007\000", !20, !1, !5} ; [ DW_TAG_auto_variable ]
-!20 = !{!"0xb\007\000\001", !47, !6} ; [ DW_TAG_lexical_block ]
-!21 = !{!"0x101\00a\0010\000", !7, !1, !5} ; [ DW_TAG_arg_variable ]
-!22 = !{!"0x100\00b\0010\000", !23, !1, !5} ; [ DW_TAG_auto_variable ]
-!23 = !{!"0xb\0010\000\002", !47, !7} ; [ DW_TAG_lexical_block ]
-!24 = !{!"0x101\00a\0013\000", !8, !1, !5} ; [ DW_TAG_arg_variable ]
-!25 = !{!"0x100\00b\0013\000", !26, !1, !5} ; [ DW_TAG_auto_variable ]
-!26 = !{!"0xb\0013\000\003", !47, !8} ; [ DW_TAG_lexical_block ]
-!27 = !{!"0x101\00a\0016\000", !9, !1, !5} ; [ DW_TAG_arg_variable ]
-!28 = !{!"0x100\00b\0016\000", !29, !1, !5} ; [ DW_TAG_auto_variable ]
-!29 = !{!"0xb\0016\000\004", !47, !9} ; [ DW_TAG_lexical_block ]
+!5 = !MDBasicType(tag: DW_TAG_base_type, name: "_Bool", size: 8, align: 8, encoding: DW_ATE_boolean)
+!6 = !MDSubprogram(name: "get2", linkageName: "get2", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 7, file: !47, scope: !1, type: !3, function: i8 (i8)* @get2, variables: !43)
+!7 = !MDSubprogram(name: "get3", linkageName: "get3", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 10, file: !47, scope: !1, type: !3, function: i8 (i8)* @get3, variables: !44)
+!8 = !MDSubprogram(name: "get4", linkageName: "get4", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 13, file: !47, scope: !1, type: !3, function: i8 (i8)* @get4, variables: !45)
+!9 = !MDSubprogram(name: "get5", linkageName: "get5", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 16, file: !47, scope: !1, type: !3, function: i8 (i8)* @get5, variables: !46)
+!10 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 4, arg: 0, scope: !0, file: !1, type: !5)
+!11 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 4, scope: !12, file: !1, type: !5)
+!12 = distinct !MDLexicalBlock(line: 4, column: 0, file: !47, scope: !0)
+!13 = !MDGlobalVariable(name: "x1", line: 3, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5, variable: i8* @x1)
+!14 = !MDGlobalVariable(name: "x2", line: 6, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5, variable: i8* @x2)
+!15 = !MDGlobalVariable(name: "x3", line: 9, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5, variable: i8* @x3)
+!16 = !MDGlobalVariable(name: "x4", line: 12, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !5, variable: i8* @x4)
+!17 = !MDGlobalVariable(name: "x5", line: 15, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !5, variable: i8* @x5)
+!18 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 7, arg: 0, scope: !6, file: !1, type: !5)
+!19 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 7, scope: !20, file: !1, type: !5)
+!20 = distinct !MDLexicalBlock(line: 7, column: 0, file: !47, scope: !6)
+!21 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 10, arg: 0, scope: !7, file: !1, type: !5)
+!22 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 10, scope: !23, file: !1, type: !5)
+!23 = distinct !MDLexicalBlock(line: 10, column: 0, file: !47, scope: !7)
+!24 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 13, arg: 0, scope: !8, file: !1, type: !5)
+!25 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 13, scope: !26, file: !1, type: !5)
+!26 = distinct !MDLexicalBlock(line: 13, column: 0, file: !47, scope: !8)
+!27 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 16, arg: 0, scope: !9, file: !1, type: !5)
+!28 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 16, scope: !29, file: !1, type: !5)
+!29 = distinct !MDLexicalBlock(line: 16, column: 0, file: !47, scope: !9)
 !30 = !MDLocation(line: 4, scope: !0)
 !31 = !MDLocation(line: 4, scope: !12)
 !32 = !MDLocation(line: 7, scope: !6)
@@ -125,6 +125,6 @@ entry:
 !44 = !{!21, !22}
 !45 = !{!24, !25}
 !46 = !{!27, !28}
-!47 = !{!"foo.c", !"/tmp/"}
+!47 = !MDFile(filename: "foo.c", directory: "/tmp/")
 !48 = !{}
-!49 = !{i32 1, !"Debug Info Version", i32 2}
+!49 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll b/llvm/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll
index cc843471342..dee4d67ec54 100644
--- a/llvm/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll
+++ b/llvm/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll
@@ -29,41 +29,41 @@ target triple = "thumbv7-apple-macosx10.7.0"
 @x5 = global i32 0, align 4
 
 define i32 @get1(i32 %a) nounwind optsize ssp {
-  tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !10, metadata !{!"0x102"}), !dbg !30
+  tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !10, metadata !MDExpression()), !dbg !30
   %1 = load i32, i32* @x1, align 4, !dbg !31
-  tail call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !11, metadata !{!"0x102"}), !dbg !31
+  tail call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !11, metadata !MDExpression()), !dbg !31
   store i32 %a, i32* @x1, align 4, !dbg !31
   ret i32 %1, !dbg !31
 }
 
 define i32 @get2(i32 %a) nounwind optsize ssp {
-  tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !13, metadata !{!"0x102"}), !dbg !32
+  tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !13, metadata !MDExpression()), !dbg !32
   %1 = load i32, i32* @x2, align 4, !dbg !33
-  tail call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !14, metadata !{!"0x102"}), !dbg !33
+  tail call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !14, metadata !MDExpression()), !dbg !33
   store i32 %a, i32* @x2, align 4, !dbg !33
   ret i32 %1, !dbg !33
 }
 
 define i32 @get3(i32 %a) nounwind optsize ssp {
-  tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !16, metadata !{!"0x102"}), !dbg !34
+  tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !16, metadata !MDExpression()), !dbg !34
   %1 = load i32, i32* @x3, align 4, !dbg !35
-  tail call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !17, metadata !{!"0x102"}), !dbg !35
+  tail call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !17, metadata !MDExpression()), !dbg !35
   store i32 %a, i32* @x3, align 4, !dbg !35
   ret i32 %1, !dbg !35
 }
 
 define i32 @get4(i32 %a) nounwind optsize ssp {
-  tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !19, metadata !{!"0x102"}), !dbg !36
+  tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !19, metadata !MDExpression()), !dbg !36
   %1 = load i32, i32* @x4, align 4, !dbg !37
-  tail call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !20, metadata !{!"0x102"}), !dbg !37
+  tail call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !20, metadata !MDExpression()), !dbg !37
   store i32 %a, i32* @x4, align 4, !dbg !37
   ret i32 %1, !dbg !37
 }
 
 define i32 @get5(i32 %a) nounwind optsize ssp {
-  tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !27, metadata !{!"0x102"}), !dbg !38
+  tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !27, metadata !MDExpression()), !dbg !38
   %1 = load i32, i32* @x5, align 4, !dbg !39
-  tail call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !28, metadata !{!"0x102"}), !dbg !39
+  tail call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !28, metadata !MDExpression()), !dbg !39
   store i32 %a, i32* @x5, align 4, !dbg !39
   ret i32 %1, !dbg !39
 }
@@ -73,33 +73,33 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!49}
 
-!0 = !{!"0x11\0012\00clang\001\00\000\00\001", !47, !48, !48, !40, !41,  !48} ; [ DW_TAG_compile_unit ]
-!1 = !{!"0x2e\00get1\00get1\00\005\000\001\000\006\00256\001\005", !47, !2, !3, null, i32 (i32)* @get1, null, null, !42} ; [ DW_TAG_subprogram ] [line 5] [def] [get1]
-!2 = !{!"0x29", !47} ; [ DW_TAG_file_type ]
-!3 = !{!"0x15\00\000\000\000\000\000\000", !47, !2, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang", isOptimized: true, emissionKind: 1, file: !47, enums: !48, retainedTypes: !48, subprograms: !40, globals: !41, imports:  !48)
+!1 = !MDSubprogram(name: "get1", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 5, file: !47, scope: !2, type: !3, function: i32 (i32)* @get1, variables: !42)
+!2 = !MDFile(filename: "ss3.c", directory: "/private/tmp")
+!3 = !MDSubroutineType(types: !4)
 !4 = !{!5}
-!5 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !0} ; [ DW_TAG_base_type ]
-!6 = !{!"0x2e\00get2\00get2\00\008\000\001\000\006\00256\001\008", !47, !2, !3, null, i32 (i32)* @get2, null, null, !43} ; [ DW_TAG_subprogram ] [line 8] [def] [get2]
-!7 = !{!"0x2e\00get3\00get3\00\0011\000\001\000\006\00256\001\0011", !47, !2, !3, null, i32 (i32)* @get3, null, null, !44} ; [ DW_TAG_subprogram ] [line 11] [def] [get3]
-!8 = !{!"0x2e\00get4\00get4\00\0014\000\001\000\006\00256\001\0014", !47, !2, !3, null, i32 (i32)* @get4, null, null, !45} ; [ DW_TAG_subprogram ] [line 14] [def] [get4]
-!9 = !{!"0x2e\00get5\00get5\00\0017\000\001\000\006\00256\001\0017", !47, !2, !3, null, i32 (i32)* @get5, null, null, !46} ; [ DW_TAG_subprogram ] [line 17] [def] [get5]
-!10 = !{!"0x101\00a\0016777221\000", !1, !2, !5} ; [ DW_TAG_arg_variable ]
-!11 = !{!"0x100\00b\005\000", !12, !2, !5} ; [ DW_TAG_auto_variable ]
-!12 = !{!"0xb\005\0019\000", !47, !1} ; [ DW_TAG_lexical_block ]
-!13 = !{!"0x101\00a\0016777224\000", !6, !2, !5} ; [ DW_TAG_arg_variable ]
-!14 = !{!"0x100\00b\008\000", !15, !2, !5} ; [ DW_TAG_auto_variable ]
-!15 = !{!"0xb\008\0017\001", !47, !6} ; [ DW_TAG_lexical_block ]
-!16 = !{!"0x101\00a\0016777227\000", !7, !2, !5} ; [ DW_TAG_arg_variable ]
-!17 = !{!"0x100\00b\0011\000", !18, !2, !5} ; [ DW_TAG_auto_variable ]
-!18 = !{!"0xb\0011\0019\002", !47, !7} ; [ DW_TAG_lexical_block ]
-!19 = !{!"0x101\00a\0016777230\000", !8, !2, !5} ; [ DW_TAG_arg_variable ]
-!20 = !{!"0x100\00b\0014\000", !21, !2, !5} ; [ DW_TAG_auto_variable ]
-!21 = !{!"0xb\0014\0019\003", !47, !8} ; [ DW_TAG_lexical_block ]
-!25 = !{!"0x34\00x1\00x1\00\004\001\001", !0, !2, !5, i32* @x1, null} ; [ DW_TAG_variable ]
-!26 = !{!"0x34\00x2\00x2\00\007\001\001", !0, !2, !5, i32* @x2, null} ; [ DW_TAG_variable ]
-!27 = !{!"0x101\00a\0016777233\000", !9, !2, !5} ; [ DW_TAG_arg_variable ]
-!28 = !{!"0x100\00b\0017\000", !29, !2, !5} ; [ DW_TAG_auto_variable ]
-!29 = !{!"0xb\0017\0019\004", !47, !9} ; [ DW_TAG_lexical_block ]
+!5 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!6 = !MDSubprogram(name: "get2", line: 8, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 8, file: !47, scope: !2, type: !3, function: i32 (i32)* @get2, variables: !43)
+!7 = !MDSubprogram(name: "get3", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 11, file: !47, scope: !2, type: !3, function: i32 (i32)* @get3, variables: !44)
+!8 = !MDSubprogram(name: "get4", line: 14, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 14, file: !47, scope: !2, type: !3, function: i32 (i32)* @get4, variables: !45)
+!9 = !MDSubprogram(name: "get5", line: 17, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 17, file: !47, scope: !2, type: !3, function: i32 (i32)* @get5, variables: !46)
+!10 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 5, arg: 1, scope: !1, file: !2, type: !5)
+!11 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 5, scope: !12, file: !2, type: !5)
+!12 = distinct !MDLexicalBlock(line: 5, column: 19, file: !47, scope: !1)
+!13 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 8, arg: 1, scope: !6, file: !2, type: !5)
+!14 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 8, scope: !15, file: !2, type: !5)
+!15 = distinct !MDLexicalBlock(line: 8, column: 17, file: !47, scope: !6)
+!16 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 11, arg: 1, scope: !7, file: !2, type: !5)
+!17 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 11, scope: !18, file: !2, type: !5)
+!18 = distinct !MDLexicalBlock(line: 11, column: 19, file: !47, scope: !7)
+!19 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 14, arg: 1, scope: !8, file: !2, type: !5)
+!20 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 14, scope: !21, file: !2, type: !5)
+!21 = distinct !MDLexicalBlock(line: 14, column: 19, file: !47, scope: !8)
+!25 = !MDGlobalVariable(name: "x1", line: 4, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !5, variable: i32* @x1)
+!26 = !MDGlobalVariable(name: "x2", line: 7, isLocal: true, isDefinition: true, scope: !0, file: !2, type: !5, variable: i32* @x2)
+!27 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 17, arg: 1, scope: !9, file: !2, type: !5)
+!28 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 17, scope: !29, file: !2, type: !5)
+!29 = distinct !MDLexicalBlock(line: 17, column: 19, file: !47, scope: !9)
 !30 = !MDLocation(line: 5, column: 16, scope: !1)
 !31 = !MDLocation(line: 5, column: 32, scope: !12)
 !32 = !MDLocation(line: 8, column: 14, scope: !6)
@@ -117,6 +117,6 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !44 = !{!16, !17}
 !45 = !{!19, !20}
 !46 = !{!27, !28}
-!47 = !{!"ss3.c", !"/private/tmp"}
+!47 = !MDFile(filename: "ss3.c", directory: "/private/tmp")
 !48 = !{}
-!49 = !{i32 1, !"Debug Info Version", i32 2}
+!49 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/coalesce-dbgvalue.ll b/llvm/test/CodeGen/ARM/coalesce-dbgvalue.ll
index 4f2b66d54dc..9ec9c6ce1cc 100644
--- a/llvm/test/CodeGen/ARM/coalesce-dbgvalue.ll
+++ b/llvm/test/CodeGen/ARM/coalesce-dbgvalue.ll
@@ -27,11 +27,11 @@ for.cond1:                                        ; preds = %for.end9, %for.cond
 
 for.body2:                                        ; preds = %for.cond1
   store i32 %storemerge11, i32* @b, align 4, !dbg !26
-  tail call void @llvm.dbg.value(metadata i32* null, i64 0, metadata !11, metadata !{!"0x102"}), !dbg !28
+  tail call void @llvm.dbg.value(metadata i32* null, i64 0, metadata !11, metadata !MDExpression()), !dbg !28
   %0 = load i64, i64* @a, align 8, !dbg !29
   %xor = xor i64 %0, %e.1.ph, !dbg !29
   %conv3 = trunc i64 %xor to i32, !dbg !29
-  tail call void @llvm.dbg.value(metadata i32 %conv3, i64 0, metadata !10, metadata !{!"0x102"}), !dbg !29
+  tail call void @llvm.dbg.value(metadata i32 %conv3, i64 0, metadata !10, metadata !MDExpression()), !dbg !29
   %tobool4 = icmp eq i32 %conv3, 0, !dbg !29
   br i1 %tobool4, label %land.end, label %land.rhs, !dbg !29
 
@@ -79,33 +79,33 @@ attributes #3 = { nounwind }
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!33}
 
-!0 = !{!"0x11\0012\00clang version 3.4 (trunk 182024) (llvm/trunk 182023)\001\00\000\00\000", !1, !2, !2, !3, !15, !2} ; [ DW_TAG_compile_unit ] [/d/b/pr16110.c] [DW_LANG_C99]
-!1 = !{!"pr16110.c", !"/d/b"}
+!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 182024) (llvm/trunk 182023)", isOptimized: true, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !15, imports: !2)
+!1 = !MDFile(filename: "pr16110.c", directory: "/d/b")
 !2 = !{}
 !3 = !{!4}
-!4 = !{!"0x2e\00pr16110\00pr16110\00\007\000\001\000\006\000\001\007", !1, !5, !6, null, i32 ()* @pr16110, null, null, !9} ; [ DW_TAG_subprogram ] [line 7] [def] [pr16110]
-!5 = !{!"0x29", !1}          ; [ DW_TAG_file_type ] [/d/b/pr16110.c]
-!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!4 = !MDSubprogram(name: "pr16110", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 7, file: !1, scope: !5, type: !6, function: i32 ()* @pr16110, variables: !9)
+!5 = !MDFile(filename: "pr16110.c", directory: "/d/b")
+!6 = !MDSubroutineType(types: !7)
 !7 = !{!8}
-!8 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
+!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{!10, !11}
-!10 = !{!"0x100\00e\008\000", !4, !5, !8} ; [ DW_TAG_auto_variable ] [e] [line 8]
-!11 = !{!"0x100\00f\0013\000", !12, !5, !14} ; [ DW_TAG_auto_variable ] [f] [line 13]
-!12 = !{!"0xb\0012\000\002", !1, !13} ; [ DW_TAG_lexical_block ] [/d/b/pr16110.c]
-!13 = !{!"0xb\0012\000\001", !1, !4} ; [ DW_TAG_lexical_block ] [/d/b/pr16110.c]
-!14 = !{!"0xf\00\000\0032\0032\000\000", null, null, !8} ; [ DW_TAG_pointer_type ] [line 0, size 32, align 32, offset 0] [from int]
+!10 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "e", line: 8, scope: !4, file: !5, type: !8)
+!11 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "f", line: 13, scope: !12, file: !5, type: !14)
+!12 = distinct !MDLexicalBlock(line: 12, column: 0, file: !1, scope: !13)
+!13 = distinct !MDLexicalBlock(line: 12, column: 0, file: !1, scope: !4)
+!14 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !8)
 !15 = !{!16, !18, !19, !20}
-!16 = !{!"0x34\00a\00a\00\001\000\001", null, !5, !17, i64* @a, null} ; [ DW_TAG_variable ] [a] [line 1] [def]
-!17 = !{!"0x24\00long long int\000\0064\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [long long int] [line 0, size 64, align 32, offset 0, enc DW_ATE_signed]
-!18 = !{!"0x34\00b\00b\00\002\000\001", null, !5, !8, i32* @b, null} ; [ DW_TAG_variable ] [b] [line 2] [def]
-!19 = !{!"0x34\00c\00c\00\003\000\001", null, !5, !8, i32* @c, null} ; [ DW_TAG_variable ] [c] [line 3] [def]
-!20 = !{!"0x34\00d\00d\00\004\000\001", null, !5, !8, i32* @d, null} ; [ DW_TAG_variable ] [d] [line 4] [def]
+!16 = !MDGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !17, variable: i64* @a)
+!17 = !MDBasicType(tag: DW_TAG_base_type, name: "long long int", size: 64, align: 32, encoding: DW_ATE_signed)
+!18 = !MDGlobalVariable(name: "b", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8, variable: i32* @b)
+!19 = !MDGlobalVariable(name: "c", line: 3, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8, variable: i32* @c)
+!20 = !MDGlobalVariable(name: "d", line: 4, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8, variable: i32* @d)
 !21 = !MDLocation(line: 10, scope: !22)
-!22 = !{!"0xb\0010\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [/d/b/pr16110.c]
+!22 = distinct !MDLexicalBlock(line: 10, column: 0, file: !1, scope: !4)
 !26 = !MDLocation(line: 12, scope: !13)
 !27 = !{i32* null}
 !28 = !MDLocation(line: 13, scope: !12)
 !29 = !MDLocation(line: 14, scope: !12)
 !31 = !MDLocation(line: 16, scope: !4)
 !32 = !MDLocation(line: 18, scope: !4)
-!33 = !{i32 1, !"Debug Info Version", i32 2}
+!33 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/debug-frame-vararg.ll b/llvm/test/CodeGen/ARM/debug-frame-vararg.ll
index 934e125c4db..2608623b986 100644
--- a/llvm/test/CodeGen/ARM/debug-frame-vararg.ll
+++ b/llvm/test/CodeGen/ARM/debug-frame-vararg.ll
@@ -25,37 +25,37 @@
 !llvm.module.flags = !{!9, !10}
 !llvm.ident = !{!11}
 
-!0 = !{!"0x11\0012\00clang version 3.5 \000\00\000\00\000", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/var.c] [DW_LANG_C99]
-!1 = !{!"var.c", !"/tmp"}
+!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !MDFile(filename: "var.c", directory: "/tmp")
 !2 = !{}
 !3 = !{!4}
-!4 = !{!"0x2e\00sum\00sum\00\005\000\001\000\006\00256\000\005", !1, !5, !6, null, i32 (i32, ...)* @sum, null, null, !2} ; [ DW_TAG_subprogram ] [line 5] [def] [sum]
-!5 = !{!"0x29", !1}          ; [ DW_TAG_file_type ] [/tmp/var.c]
-!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!4 = !MDSubprogram(name: "sum", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !5, type: !6, function: i32 (i32, ...)* @sum, variables: !2)
+!5 = !MDFile(filename: "var.c", directory: "/tmp")
+!6 = !MDSubroutineType(types: !7)
 !7 = !{!8, !8}
-!8 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
+!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{i32 2, !"Dwarf Version", i32 4}
-!10 = !{i32 1, !"Debug Info Version", i32 2}
+!10 = !{i32 1, !"Debug Info Version", i32 3}
 !11 = !{!"clang version 3.5 "}
-!12 = !{!"0x101\00count\0016777221\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [count] [line 5]
+!12 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "count", line: 5, arg: 1, scope: !4, file: !5, type: !8)
 !13 = !MDLocation(line: 5, scope: !4)
-!14 = !{!"0x100\00vl\006\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [vl] [line 6]
-!15 = !{!"0x16\00va_list\0030\000\000\000\000", !16, null, !17} ; [ DW_TAG_typedef ] [va_list] [line 30, size 0, align 0, offset 0] [from __builtin_va_list]
-!16 = !{!"/linux-x86_64-high/gcc_4.7.2/dbg/llvm/bin/../lib/clang/3.5/include/stdarg.h", !"/tmp"}
-!17 = !{!"0x16\00__builtin_va_list\006\000\000\000\000", !1, null, !18} ; [ DW_TAG_typedef ] [__builtin_va_list] [line 6, size 0, align 0, offset 0] [from __va_list]
-!18 = !{!"0x13\00__va_list\006\0032\0032\000\000\000", !1, null, null, !19, null, null, null} ; [ DW_TAG_structure_type ] [__va_list] [line 6, size 32, align 32, offset 0] [def] [from ]
+!14 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "vl", line: 6, scope: !4, file: !5, type: !15)
+!15 = !MDDerivedType(tag: DW_TAG_typedef, name: "va_list", line: 30, file: !16, baseType: !17)
+!16 = !MDFile(filename: "/linux-x86_64-high/gcc_4.7.2/dbg/llvm/bin/../lib/clang/3.5/include/stdarg.h", directory: "/tmp")
+!17 = !MDDerivedType(tag: DW_TAG_typedef, name: "__builtin_va_list", line: 6, file: !1, baseType: !18)
+!18 = !MDCompositeType(tag: DW_TAG_structure_type, name: "__va_list", line: 6, size: 32, align: 32, file: !1, elements: !19)
 !19 = !{!20}
-!20 = !{!"0xd\00__ap\006\0032\0032\000\000", !1, !18, !21} ; [ DW_TAG_member ] [__ap] [line 6, size 32, align 32, offset 0] [from ]
-!21 = !{!"0xf\00\000\0032\0032\000\000", null, null, null} ; [ DW_TAG_pointer_type ] [line 0, size 32, align 32, offset 0] [from ]
+!20 = !MDDerivedType(tag: DW_TAG_member, name: "__ap", line: 6, size: 32, align: 32, file: !1, scope: !18, baseType: !21)
+!21 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: null)
 !22 = !MDLocation(line: 6, scope: !4)
 !23 = !MDLocation(line: 7, scope: !4)
-!24 = !{!"0x100\00sum\008\000", !4, !5, !8} ; [ DW_TAG_auto_variable ] [sum] [line 8]
+!24 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "sum", line: 8, scope: !4, file: !5, type: !8)
 !25 = !MDLocation(line: 8, scope: !4)
-!26 = !{!"0x100\00i\009\000", !27, !5, !8} ; [ DW_TAG_auto_variable ] [i] [line 9]
-!27 = !{!"0xb\009\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [/tmp/var.c]
+!26 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i", line: 9, scope: !27, file: !5, type: !8)
+!27 = distinct !MDLexicalBlock(line: 9, column: 0, file: !1, scope: !4)
 !28 = !MDLocation(line: 9, scope: !27)
 !29 = !MDLocation(line: 10, scope: !30)
-!30 = !{!"0xb\009\000\001", !1, !27} ; [ DW_TAG_lexical_block ] [/tmp/var.c]
+!30 = distinct !MDLexicalBlock(line: 9, column: 0, file: !1, scope: !27)
 !31 = !MDLocation(line: 11, scope: !30)
 !32 = !MDLocation(line: 12, scope: !4)
 !33 = !MDLocation(line: 13, scope: !4)
diff --git a/llvm/test/CodeGen/ARM/debug-frame.ll b/llvm/test/CodeGen/ARM/debug-frame.ll
index 16e2c4c59f9..9b115edc74d 100644
--- a/llvm/test/CodeGen/ARM/debug-frame.ll
+++ b/llvm/test/CodeGen/ARM/debug-frame.ll
@@ -128,37 +128,37 @@ declare void @_ZSt9terminatev()
 !llvm.module.flags = !{!10, !11}
 !llvm.ident = !{!12}
 
-!0 = !{!"0x11\004\00clang version 3.5 \000\00\000\00\000", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/exp.cpp] [DW_LANG_C_plus_plus]
-!1 = !{!"exp.cpp", !"/tmp"}
+!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !MDFile(filename: "exp.cpp", directory: "/tmp")
 !2 = !{}
 !3 = !{!4}
-!4 = !{!"0x2e\00test\00test\00_Z4testiiiiiddddd\004\000\001\000\006\00256\000\005", !1, !5, !6, null, void (i32, i32, i32, i32, i32, double, double, double, double, double)* @_Z4testiiiiiddddd, null, null, !2} ; [ DW_TAG_subprogram ] [line 4] [def] [scope 5] [test]
-!5 = !{!"0x29", !1}          ; [ DW_TAG_file_type ] [/tmp/exp.cpp]
-!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!4 = !MDSubprogram(name: "test", linkageName: "_Z4testiiiiiddddd", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !5, type: !6, function: void (i32, i32, i32, i32, i32, double, double, double, double, double)* @_Z4testiiiiiddddd, variables: !2)
+!5 = !MDFile(filename: "exp.cpp", directory: "/tmp")
+!6 = !MDSubroutineType(types: !7)
 !7 = !{null, !8, !8, !8, !8, !8, !9, !9, !9, !9, !9}
-!8 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
-!9 = !{!"0x24\00double\000\0064\0064\000\000\004", null, null} ; [ DW_TAG_base_type ] [double] [line 0, size 64, align 64, offset 0, enc DW_ATE_float]
+!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!9 = !MDBasicType(tag: DW_TAG_base_type, name: "double", size: 64, align: 64, encoding: DW_ATE_float)
 !10 = !{i32 2, !"Dwarf Version", i32 4}
-!11 = !{i32 1, !"Debug Info Version", i32 2}
+!11 = !{i32 1, !"Debug Info Version", i32 3}
 !12 = !{!"clang version 3.5 "}
-!13 = !{!"0x101\00a\0016777220\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [a] [line 4]
+!13 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 4, arg: 1, scope: !4, file: !5, type: !8)
 !14 = !MDLocation(line: 4, scope: !4)
-!15 = !{!"0x101\00b\0033554436\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [b] [line 4]
-!16 = !{!"0x101\00c\0050331652\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [c] [line 4]
-!17 = !{!"0x101\00d\0067108868\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [d] [line 4]
-!18 = !{!"0x101\00e\0083886084\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [e] [line 4]
-!19 = !{!"0x101\00m\00100663301\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [m] [line 5]
+!15 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "b", line: 4, arg: 2, scope: !4, file: !5, type: !8)
+!16 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "c", line: 4, arg: 3, scope: !4, file: !5, type: !8)
+!17 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "d", line: 4, arg: 4, scope: !4, file: !5, type: !8)
+!18 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "e", line: 4, arg: 5, scope: !4, file: !5, type: !8)
+!19 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "m", line: 5, arg: 6, scope: !4, file: !5, type: !9)
 !20 = !MDLocation(line: 5, scope: !4)
-!21 = !{!"0x101\00n\00117440517\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [n] [line 5]
-!22 = !{!"0x101\00p\00134217733\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [p] [line 5]
-!23 = !{!"0x101\00q\00150994949\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [q] [line 5]
-!24 = !{!"0x101\00r\00167772165\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [r] [line 5]
+!21 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "n", line: 5, arg: 7, scope: !4, file: !5, type: !9)
+!22 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "p", line: 5, arg: 8, scope: !4, file: !5, type: !9)
+!23 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "q", line: 5, arg: 9, scope: !4, file: !5, type: !9)
+!24 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "r", line: 5, arg: 10, scope: !4, file: !5, type: !9)
 !25 = !MDLocation(line: 7, scope: !26)
-!26 = !{!"0xb\006\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [/tmp/exp.cpp]
+!26 = distinct !MDLexicalBlock(line: 6, column: 0, file: !1, scope: !4)
 !27 = !MDLocation(line: 8, scope: !26)
 !28 = !MDLocation(line: 11, scope: !26)
 !29 = !MDLocation(line: 9, scope: !30)
-!30 = !{!"0xb\008\000\001", !1, !4} ; [ DW_TAG_lexical_block ] [/tmp/exp.cpp]
+!30 = distinct !MDLexicalBlock(line: 8, column: 0, file: !1, scope: !4)
 !31 = !MDLocation(line: 10, scope: !30)
 !32 = !MDLocation(line: 10, scope: !4)
 !33 = !MDLocation(line: 11, scope: !4)
diff --git a/llvm/test/CodeGen/ARM/debug-info-arg.ll b/llvm/test/CodeGen/ARM/debug-info-arg.ll
index 8679589a486..cb9520e9fa9 100644
--- a/llvm/test/CodeGen/ARM/debug-info-arg.ll
+++ b/llvm/test/CodeGen/ARM/debug-info-arg.ll
@@ -7,13 +7,13 @@ target triple = "thumbv7-apple-ios"
 %struct.tag_s = type { i32, i32, i32 }
 
 define void @foo(%struct.tag_s* nocapture %this, %struct.tag_s* %c, i64 %x, i64 %y, %struct.tag_s* nocapture %ptr1, %struct.tag_s* nocapture %ptr2) nounwind ssp {
-  tail call void @llvm.dbg.value(metadata %struct.tag_s* %this, i64 0, metadata !5, metadata !{!"0x102"}), !dbg !20
-  tail call void @llvm.dbg.value(metadata %struct.tag_s* %c, i64 0, metadata !13, metadata !{!"0x102"}), !dbg !21
-  tail call void @llvm.dbg.value(metadata i64 %x, i64 0, metadata !14, metadata !{!"0x102"}), !dbg !22
-  tail call void @llvm.dbg.value(metadata i64 %y, i64 0, metadata !17, metadata !{!"0x102"}), !dbg !23
+  tail call void @llvm.dbg.value(metadata %struct.tag_s* %this, i64 0, metadata !5, metadata !MDExpression()), !dbg !20
+  tail call void @llvm.dbg.value(metadata %struct.tag_s* %c, i64 0, metadata !13, metadata !MDExpression()), !dbg !21
+  tail call void @llvm.dbg.value(metadata i64 %x, i64 0, metadata !14, metadata !MDExpression()), !dbg !22
+  tail call void @llvm.dbg.value(metadata i64 %y, i64 0, metadata !17, metadata !MDExpression()), !dbg !23
 ;CHECK:	@DEBUG_VALUE: foo:y <- [R7+8]
-  tail call void @llvm.dbg.value(metadata %struct.tag_s* %ptr1, i64 0, metadata !18, metadata !{!"0x102"}), !dbg !24
-  tail call void @llvm.dbg.value(metadata %struct.tag_s* %ptr2, i64 0, metadata !19, metadata !{!"0x102"}), !dbg !25
+  tail call void @llvm.dbg.value(metadata %struct.tag_s* %ptr1, i64 0, metadata !18, metadata !MDExpression()), !dbg !24
+  tail call void @llvm.dbg.value(metadata %struct.tag_s* %ptr2, i64 0, metadata !19, metadata !MDExpression()), !dbg !25
   %1 = icmp eq %struct.tag_s* %c, null, !dbg !26
   br i1 %1, label %3, label %2, !dbg !26
 
@@ -32,26 +32,26 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!33}
 
-!0 = !{!"0x11\0012\00Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn)\001\00\000\00\001", !32, !4, !4, !30, null,  null} ; [ DW_TAG_compile_unit ]
-!1 = !{!"0x2e\00foo\00foo\00\0011\000\001\000\006\00256\001\0011", !2, !2, !3, null, void (%struct.tag_s*, %struct.tag_s*, i64, i64, %struct.tag_s*, %struct.tag_s*)* @foo, null, null, !31} ; [ DW_TAG_subprogram ] [line 11] [def] [foo]
-!2 = !{!"0x29", !32} ; [ DW_TAG_file_type ]
-!3 = !{!"0x15\00\000\000\000\000\000\000", !32, !2, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn)", isOptimized: true, emissionKind: 1, file: !32, enums: !4, retainedTypes: !4, subprograms: !30, imports:  null)
+!1 = !MDSubprogram(name: "foo", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 11, file: !2, scope: !2, type: !3, function: void (%struct.tag_s*, %struct.tag_s*, i64, i64, %struct.tag_s*, %struct.tag_s*)* @foo, variables: !31)
+!2 = !MDFile(filename: "one.c", directory: "/Volumes/Athwagate/R10048772")
+!3 = !MDSubroutineType(types: !4)
 !4 = !{null}
-!5 = !{!"0x101\00this\0016777227\000", !1, !2, !6} ; [ DW_TAG_arg_variable ]
-!6 = !{!"0xf\00\000\0032\0032\000\000", null, !0, !7} ; [ DW_TAG_pointer_type ]
-!7 = !{!"0x13\00tag_s\005\0096\0032\000\000\000", !32, !0, null, !8, null, null, null} ; [ DW_TAG_structure_type ] [tag_s] [line 5, size 96, align 32, offset 0] [def] [from ]
+!5 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", line: 11, arg: 1, scope: !1, file: !2, type: !6)
+!6 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !0, baseType: !7)
+!7 = !MDCompositeType(tag: DW_TAG_structure_type, name: "tag_s", line: 5, size: 96, align: 32, file: !32, scope: !0, elements: !8)
 !8 = !{!9, !11, !12}
-!9 = !{!"0xd\00x\006\0032\0032\000\000", !32, !7, !10} ; [ DW_TAG_member ]
-!10 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !0} ; [ DW_TAG_base_type ]
-!11 = !{!"0xd\00y\007\0032\0032\0032\000", !32, !7, !10} ; [ DW_TAG_member ]
-!12 = !{!"0xd\00z\008\0032\0032\0064\000", !32, !7, !10} ; [ DW_TAG_member ]
-!13 = !{!"0x101\00c\0033554443\000", !1, !2, !6} ; [ DW_TAG_arg_variable ]
-!14 = !{!"0x101\00x\0050331659\000", !1, !2, !15} ; [ DW_TAG_arg_variable ]
-!15 = !{!"0x16\00UInt64\001\000\000\000\000", !32, !0, !16} ; [ DW_TAG_typedef ]
-!16 = !{!"0x24\00long long unsigned int\000\0064\0032\000\000\007", null, !0} ; [ DW_TAG_base_type ]
-!17 = !{!"0x101\00y\0067108875\000", !1, !2, !15} ; [ DW_TAG_arg_variable ]
-!18 = !{!"0x101\00ptr1\0083886091\000", !1, !2, !6} ; [ DW_TAG_arg_variable ]
-!19 = !{!"0x101\00ptr2\00100663307\000", !1, !2, !6} ; [ DW_TAG_arg_variable ]
+!9 = !MDDerivedType(tag: DW_TAG_member, name: "x", line: 6, size: 32, align: 32, file: !32, scope: !7, baseType: !10)
+!10 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!11 = !MDDerivedType(tag: DW_TAG_member, name: "y", line: 7, size: 32, align: 32, offset: 32, file: !32, scope: !7, baseType: !10)
+!12 = !MDDerivedType(tag: DW_TAG_member, name: "z", line: 8, size: 32, align: 32, offset: 64, file: !32, scope: !7, baseType: !10)
+!13 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "c", line: 11, arg: 2, scope: !1, file: !2, type: !6)
+!14 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "x", line: 11, arg: 3, scope: !1, file: !2, type: !15)
+!15 = !MDDerivedType(tag: DW_TAG_typedef, name: "UInt64", line: 1, file: !32, scope: !0, baseType: !16)
+!16 = !MDBasicType(tag: DW_TAG_base_type, name: "long long unsigned int", size: 64, align: 32, encoding: DW_ATE_unsigned)
+!17 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "y", line: 11, arg: 4, scope: !1, file: !2, type: !15)
+!18 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "ptr1", line: 11, arg: 5, scope: !1, file: !2, type: !6)
+!19 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "ptr2", line: 11, arg: 6, scope: !1, file: !2, type: !6)
 !20 = !MDLocation(line: 11, column: 24, scope: !1)
 !21 = !MDLocation(line: 11, column: 44, scope: !1)
 !22 = !MDLocation(line: 11, column: 54, scope: !1)
@@ -59,10 +59,10 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !24 = !MDLocation(line: 11, column: 81, scope: !1)
 !25 = !MDLocation(line: 11, column: 101, scope: !1)
 !26 = !MDLocation(line: 12, column: 3, scope: !27)
-!27 = !{!"0xb\0011\00107\000", !2, !1} ; [ DW_TAG_lexical_block ]
+!27 = distinct !MDLexicalBlock(line: 11, column: 107, file: !2, scope: !1)
 !28 = !MDLocation(line: 13, column: 5, scope: !27)
 !29 = !MDLocation(line: 14, column: 1, scope: !27)
 !30 = !{!1}
 !31 = !{!5, !13, !14, !17, !18, !19}
-!32 = !{!"one.c", !"/Volumes/Athwagate/R10048772"}
-!33 = !{i32 1, !"Debug Info Version", i32 2}
+!32 = !MDFile(filename: "one.c", directory: "/Volumes/Athwagate/R10048772")
+!33 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/debug-info-blocks.ll b/llvm/test/CodeGen/ARM/debug-info-blocks.ll
index fcdf43bb61a..b205291856e 100644
--- a/llvm/test/CodeGen/ARM/debug-info-blocks.ll
+++ b/llvm/test/CodeGen/ARM/debug-info-blocks.ll
@@ -31,17 +31,17 @@ define hidden void @foobar_func_block_invoke_0(i8* %.block_descriptor, %0* %load
   %1 = alloca %0*, align 4
   %bounds = alloca %struct.CR, align 4
   %data = alloca %struct.CR, align 4
-  call void @llvm.dbg.value(metadata i8* %.block_descriptor, i64 0, metadata !27, metadata !{!"0x102"}), !dbg !129
+  call void @llvm.dbg.value(metadata i8* %.block_descriptor, i64 0, metadata !27, metadata !MDExpression()), !dbg !129
   store %0* %loadedMydata, %0** %1, align 4
-  call void @llvm.dbg.declare(metadata %0** %1, metadata !130, metadata !{!"0x102"}), !dbg !131
+  call void @llvm.dbg.declare(metadata %0** %1, metadata !130, metadata !MDExpression()), !dbg !131
   %2 = bitcast %struct.CR* %bounds to %1*
   %3 = getelementptr %1, %1* %2, i32 0, i32 0
   store [4 x i32] %bounds.coerce0, [4 x i32]* %3
-  call void @llvm.dbg.declare(metadata %struct.CR* %bounds, metadata !132, metadata !{!"0x102"}), !dbg !133
+  call void @llvm.dbg.declare(metadata %struct.CR* %bounds, metadata !132, metadata !MDExpression()), !dbg !133
   %4 = bitcast %struct.CR* %data to %1*
   %5 = getelementptr %1, %1* %4, i32 0, i32 0
   store [4 x i32] %data.coerce0, [4 x i32]* %5
-  call void @llvm.dbg.declare(metadata %struct.CR* %data, metadata !134, metadata !{!"0x102"}), !dbg !135
+  call void @llvm.dbg.declare(metadata %struct.CR* %data, metadata !134, metadata !MDExpression()), !dbg !135
   %6 = bitcast i8* %.block_descriptor to %2*
   %7 = getelementptr inbounds %2, %2* %6, i32 0, i32 6
   call void @llvm.dbg.declare(metadata %2* %6, metadata !136, metadata !163), !dbg !137
@@ -95,169 +95,169 @@ define hidden void @foobar_func_block_invoke_0(i8* %.block_descriptor, %0* %load
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!162}
 
-!0 = !{!"0x11\0016\00Apple clang version 2.1\000\00\002\00\001", !153, !147, !26, !148, null, null} ; [ DW_TAG_compile_unit ]
-!1 = !{!"0x4\00\00248\0032\0032\000\000\000", !160, !0, null, !3, null, null, null} ; [ DW_TAG_enumeration_type ] [line 248, size 32, align 32, offset 0] [def] [from ]
-!2 = !{!"0x29", !160} ; [ DW_TAG_file_type ]
+!0 = !MDCompileUnit(language: DW_LANG_ObjC, producer: "Apple clang version 2.1", isOptimized: false, runtimeVersion: 2, emissionKind: 1, file: !153, enums: !147, retainedTypes: !26, subprograms: !148)
+!1 = !MDCompositeType(tag: DW_TAG_enumeration_type, line: 248, size: 32, align: 32, file: !160, scope: !0, elements: !3)
+!2 = !MDFile(filename: "header.h", directory: "/Volumes/Sandbox/llvm")
 !3 = !{!4}
-!4 = !{!"0x28\00Ver1\000"} ; [ DW_TAG_enumerator ]
-!5 = !{!"0x4\00Mode\0079\0032\0032\000\000\000", !160, !0, null, !7, null, null, null} ; [ DW_TAG_enumeration_type ] [Mode] [line 79, size 32, align 32, offset 0] [def] [from ]
-!6 = !{!"0x29", !161} ; [ DW_TAG_file_type ]
+!4 = !MDEnumerator(name: "Ver1", value: 0) ; [ DW_TAG_enumerator ]
+!5 = !MDCompositeType(tag: DW_TAG_enumeration_type, name: "Mode", line: 79, size: 32, align: 32, file: !160, scope: !0, elements: !7)
+!6 = !MDFile(filename: "header2.h", directory: "/Volumes/Sandbox/llvm")
 !7 = !{!8}
-!8 = !{!"0x28\00One\000"} ; [ DW_TAG_enumerator ]
-!9 = !{!"0x4\00\0015\0032\0032\000\000\000", !149, !0, null, !11, null, null, null} ; [ DW_TAG_enumeration_type ] [line 15, size 32, align 32, offset 0] [def] [from ]
-!10 = !{!"0x29", !149} ; [ DW_TAG_file_type ]
+!8 = !MDEnumerator(name: "One", value: 0) ; [ DW_TAG_enumerator ]
+!9 = !MDCompositeType(tag: DW_TAG_enumeration_type, line: 15, size: 32, align: 32, file: !149, scope: !0, elements: !11)
+!10 = !MDFile(filename: "header3.h", directory: "/Volumes/Sandbox/llvm")
 !11 = !{!12, !13}
-!12 = !{!"0x28\00Unknown\000"} ; [ DW_TAG_enumerator ]
-!13 = !{!"0x28\00Known\001"} ; [ DW_TAG_enumerator ]
-!14 = !{!"0x4\00\0020\0032\0032\000\000\000", !150, !0, null, !16, null, null, null} ; [ DW_TAG_enumeration_type ] [line 20, size 32, align 32, offset 0] [def] [from ]
-!15 = !{!"0x29", !150} ; [ DW_TAG_file_type ]
+!12 = !MDEnumerator(name: "Unknown", value: 0) ; [ DW_TAG_enumerator ]
+!13 = !MDEnumerator(name: "Known", value: 1) ; [ DW_TAG_enumerator ]
+!14 = !MDCompositeType(tag: DW_TAG_enumeration_type, line: 20, size: 32, align: 32, file: !150, scope: !0, elements: !16)
+!15 = !MDFile(filename: "Private.h", directory: "/Volumes/Sandbox/llvm")
 !16 = !{!17, !18}
-!17 = !{!"0x28\00Single\000"} ; [ DW_TAG_enumerator ]
-!18 = !{!"0x28\00Double\001"} ; [ DW_TAG_enumerator ]
-!19 = !{!"0x4\00\0014\0032\0032\000\000\000", !151, !0, null, !21, null, null, null} ; [ DW_TAG_enumeration_type ] [line 14, size 32, align 32, offset 0] [def] [from ]
-!20 = !{!"0x29", !151} ; [ DW_TAG_file_type ]
+!17 = !MDEnumerator(name: "Single", value: 0) ; [ DW_TAG_enumerator ]
+!18 = !MDEnumerator(name: "Double", value: 1) ; [ DW_TAG_enumerator ]
+!19 = !MDCompositeType(tag: DW_TAG_enumeration_type, line: 14, size: 32, align: 32, file: !151, scope: !0, elements: !21)
+!20 = !MDFile(filename: "header4.h", directory: "/Volumes/Sandbox/llvm")
 !21 = !{!22}
-!22 = !{!"0x28\00Eleven\000"} ; [ DW_TAG_enumerator ]
-!23 = !{!"0x2e\00foobar_func_block_invoke_0\00foobar_func_block_invoke_0\00\00609\001\001\000\006\00256\000\00609", !152, !24, !25, null, void (i8*, %0*, [4 x i32], [4 x i32])* @foobar_func_block_invoke_0, null, null, null} ; [ DW_TAG_subprogram ] [line 609] [local] [def] [foobar_func_block_invoke_0]
-!24 = !{!"0x29", !152} ; [ DW_TAG_file_type ]
-!25 = !{!"0x15\00\000\000\000\000\000\000", !152, !24, null, !26, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!22 = !MDEnumerator(name: "Eleven", value: 0) ; [ DW_TAG_enumerator ]
+!23 = !MDSubprogram(name: "foobar_func_block_invoke_0", line: 609, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 609, file: !152, scope: !24, type: !25, function: void (i8*, %0*, [4 x i32], [4 x i32])* @foobar_func_block_invoke_0)
+!24 = !MDFile(filename: "MyLibrary.m", directory: "/Volumes/Sandbox/llvm")
+!25 = !MDSubroutineType(types: !26)
 !26 = !{null}
-!27 = !{!"0x101\00.block_descriptor\0016777825\0064", !23, !24, !28} ; [ DW_TAG_arg_variable ]
-!28 = !{!"0xf\00\000\0032\000\000\000", null, !0, !29} ; [ DW_TAG_pointer_type ]
-!29 = !{!"0x13\00__block_literal_14\00609\00256\0032\000\000\000", !152, !24, null, !30, null, null, null} ; [ DW_TAG_structure_type ] [__block_literal_14] [line 609, size 256, align 32, offset 0] [def] [from ]
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+!116 = !MDDerivedType(tag: DW_TAG_member, name: "y", line: 15, size: 32, align: 32, offset: 32, file: !156, scope: !77, baseType: !76)
+!117 = !MDDerivedType(tag: DW_TAG_member, name: "size", line: 31, size: 64, align: 32, offset: 64, file: !156, scope: !77, baseType: !118)
+!118 = !MDDerivedType(tag: DW_TAG_typedef, name: "Size", line: 25, file: !156, scope: !0, baseType: !119)
+!119 = !MDCompositeType(tag: DW_TAG_structure_type, name: "Size", line: 21, size: 64, align: 32, file: !156, scope: !0, elements: !120)
 !120 = !{!121, !122}
-!121 = !{!"0xd\00width\0022\0032\0032\000\000", !156, !77, !76} ; [ DW_TAG_member ]
-!122 = !{!"0xd\00height\0023\0032\0032\0032\000", !156, !77, !76} ; [ DW_TAG_member ]
-!123 = !{!"0xd\00_data\0040\00128\0032\00256\001", !152, !24, !108, !"", !"", !"", i32 0} ; [ DW_TAG_member ]
-!124 = !{!"0xd\00semi\00609\0032\0032\00224\000", !152, !24, !125} ; [ DW_TAG_member ]
-!125 = !{!"0x16\00d_t\0035\000\000\000\000", !152, !0, !126} ; [ DW_TAG_typedef ]
-!126 = !{!"0xf\00\000\0032\0032\000\000", null, !0, !127} ; [ DW_TAG_pointer_type ]
-!127 = !{!"0x13\00my_struct\0049\000\000\000\004\000", !159, !0, null, null, null, null, null} ; [ DW_TAG_structure_type ] [my_struct] [line 49, size 0, align 0, offset 0] [decl] [from ]
-!128 = !{!"0x29", !159} ; [ DW_TAG_file_type ]
+!121 = !MDDerivedType(tag: DW_TAG_member, name: "width", line: 22, size: 32, align: 32, file: !156, scope: !77, baseType: !76)
+!122 = !MDDerivedType(tag: DW_TAG_member, name: "height", line: 23, size: 32, align: 32, offset: 32, file: !156, scope: !77, baseType: !76)
+!123 = !MDDerivedType(tag: DW_TAG_member, name: "_data", line: 40, size: 128, align: 32, offset: 256, flags: DIFlagPrivate, file: !152, scope: !24, baseType: !108, extraData: !"")
+!124 = !MDDerivedType(tag: DW_TAG_member, name: "semi", line: 609, size: 32, align: 32, offset: 224, file: !152, scope: !24, baseType: !125)
+!125 = !MDDerivedType(tag: DW_TAG_typedef, name: "d_t", line: 35, file: !152, scope: !0, baseType: !126)
+!126 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !0, baseType: !127)
+!127 = !MDCompositeType(tag: DW_TAG_structure_type, name: "my_struct", line: 49, flags: DIFlagFwdDecl, file: !159, scope: !0)
+!128 = !MDFile(filename: "header15.h", directory: "/Volumes/Sandbox/llvm")
 !129 = !MDLocation(line: 609, column: 144, scope: !23)
-!130 = !{!"0x101\00loadedMydata\0033555041\000", !23, !24, !59} ; [ DW_TAG_arg_variable ]
+!130 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "loadedMydata", line: 609, arg: 2, scope: !23, file: !24, type: !59)
 !131 = !MDLocation(line: 609, column: 155, scope: !23)
-!132 = !{!"0x101\00bounds\0050332257\000", !23, !24, !108} ; [ DW_TAG_arg_variable ]
+!132 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "bounds", line: 609, arg: 3, scope: !23, file: !24, type: !108)
 !133 = !MDLocation(line: 609, column: 175, scope: !23)
-!134 = !{!"0x101\00data\0067109473\000", !23, !24, !108} ; [ DW_TAG_arg_variable ]
+!134 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "data", line: 609, arg: 4, scope: !23, file: !24, type: !108)
 !135 = !MDLocation(line: 609, column: 190, scope: !23)
-!136 = !{!"0x100\00mydata\00604\000", !23, !24, !50} ; [ DW_TAG_auto_variable ]
+!136 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "mydata", line: 604, scope: !23, file: !24, type: !50)
 !137 = !MDLocation(line: 604, column: 49, scope: !23)
-!138 = !{!"0x100\00self\00604\000", !23, !40, !90} ; [ DW_TAG_auto_variable ]
-!139 = !{!"0x100\00semi\00607\000", !23, !24, !125} ; [ DW_TAG_auto_variable ]
+!138 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "self", line: 604, scope: !23, file: !40, type: !90)
+!139 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "semi", line: 607, scope: !23, file: !24, type: !125)
 !140 = !MDLocation(line: 607, column: 30, scope: !23)
 !141 = !MDLocation(line: 610, column: 17, scope: !142)
-!142 = !{!"0xb\00609\00200\0094", !152, !23} ; [ DW_TAG_lexical_block ]
+!142 = distinct !MDLexicalBlock(line: 609, column: 200, file: !152, scope: !23)
 !143 = !MDLocation(line: 611, column: 17, scope: !142)
 !144 = !MDLocation(line: 612, column: 17, scope: !142)
 !145 = !MDLocation(line: 613, column: 17, scope: !142)
 !146 = !MDLocation(line: 615, column: 13, scope: !142)
 !147 = !{!1, !1, !5, !5, !9, !14, !19, !19, !14, !14, !14, !19, !19, !19}
 !148 = !{!23}
-!149 = !{!"header3.h", !"/Volumes/Sandbox/llvm"}
-!150 = !{!"Private.h", !"/Volumes/Sandbox/llvm"}
-!151 = !{!"header4.h", !"/Volumes/Sandbox/llvm"}
-!152 = !{!"MyLibrary.m", !"/Volumes/Sandbox/llvm"}
-!153 = !{!"MyLibrary.i", !"/Volumes/Sandbox/llvm"}
-!154 = !{!"header11.h", !"/Volumes/Sandbox/llvm"}
-!155 = !{!"NSO.h", !"/Volumes/Sandbox/llvm"}
-!156 = !{!"header12.h", !"/Volumes/Sandbox/llvm"}
-!157 = !{!"header13.h", !"/Volumes/Sandbox/llvm"}
-!158 = !{!"header14.h", !"/Volumes/Sandbox/llvm"}
-!159 = !{!"header15.h", !"/Volumes/Sandbox/llvm"}
-!160 = !{!"header.h", !"/Volumes/Sandbox/llvm"}
+!149 = !MDFile(filename: "header3.h", directory: "/Volumes/Sandbox/llvm")
+!150 = !MDFile(filename: "Private.h", directory: "/Volumes/Sandbox/llvm")
+!151 = !MDFile(filename: "header4.h", directory: "/Volumes/Sandbox/llvm")
+!152 = !MDFile(filename: "MyLibrary.m", directory: "/Volumes/Sandbox/llvm")
+!153 = !MDFile(filename: "MyLibrary.i", directory: "/Volumes/Sandbox/llvm")
+!154 = !MDFile(filename: "header11.h", directory: "/Volumes/Sandbox/llvm")
+!155 = !MDFile(filename: "NSO.h", directory: "/Volumes/Sandbox/llvm")
+!156 = !MDFile(filename: "header12.h", directory: "/Volumes/Sandbox/llvm")
+!157 = !MDFile(filename: "header13.h", directory: "/Volumes/Sandbox/llvm")
+!158 = !MDFile(filename: "header14.h", directory: "/Volumes/Sandbox/llvm")
+!159 = !MDFile(filename: "header15.h", directory: "/Volumes/Sandbox/llvm")
+!160 = !MDFile(filename: "header.h", directory: "/Volumes/Sandbox/llvm")
 !161 = !{!"header2.h", !"/Volumes/Sandbox/llvm"}
-!162 = !{i32 1, !"Debug Info Version", i32 2}
-!163 = !{!"0x102\0034\0020\006\0034\004\006\0034\0024"} ; [ DW_TAG_expression ] [DW_OP_plus 20 DW_OP_deref DW_OP_plus 4 DW_OP_deref DW_OP_plus 24]
-!164 = !{!"0x102\0034\0024"} ; [ DW_TAG_expression ] [DW_OP_plus 24]
-!165 = !{!"0x102\0034\0028"} ; [ DW_TAG_expression ] [DW_OP_plus 28]
+!162 = !{i32 1, !"Debug Info Version", i32 3}
+!163 = !MDExpression(DW_OP_plus, 20, DW_OP_deref, DW_OP_plus, 4, DW_OP_deref, DW_OP_plus, 24)
+!164 = !MDExpression(DW_OP_plus, 24)
+!165 = !MDExpression(DW_OP_plus, 28)
diff --git a/llvm/test/CodeGen/ARM/debug-info-branch-folding.ll b/llvm/test/CodeGen/ARM/debug-info-branch-folding.ll
index 94756953de0..6d6b90503ea 100644
--- a/llvm/test/CodeGen/ARM/debug-info-branch-folding.ll
+++ b/llvm/test/CodeGen/ARM/debug-info-branch-folding.ll
@@ -20,9 +20,9 @@ entry:
 
 for.body9:                                        ; preds = %for.body9, %entry
   %add19 = fadd <4 x float> undef, <float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 1.000000e+00>, !dbg !39
-  tail call void @llvm.dbg.value(metadata <4 x float> %add19, i64 0, metadata !27, metadata !{!"0x102"}), !dbg !39
+  tail call void @llvm.dbg.value(metadata <4 x float> %add19, i64 0, metadata !27, metadata !MDExpression()), !dbg !39
   %add20 = fadd <4 x float> undef, <float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 1.000000e+00>, !dbg !39
-  tail call void @llvm.dbg.value(metadata <4 x float> %add20, i64 0, metadata !28, metadata !{!"0x102"}), !dbg !39
+  tail call void @llvm.dbg.value(metadata <4 x float> %add20, i64 0, metadata !28, metadata !MDExpression()), !dbg !39
   br i1 %cond, label %for.end54, label %for.body9, !dbg !44
 
 for.end54:                                        ; preds = %for.body9
@@ -42,60 +42,60 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !llvm.module.flags = !{!56}
 !llvm.dbg.cu = !{!2}
 
-!0 = !{!"0x2e\00test0001\00test0001\00\003\000\001\000\006\00256\001\000", !54, null, !3, i32 0, <4 x float> (float)* @test0001, null, null, !51} ; [ DW_TAG_subprogram ]
-!1 = !{!"0x29", !54} ; [ DW_TAG_file_type ]
-!2 = !{!"0x11\0012\00clang version 3.0 (trunk 129915)\001\00\000\00\001", !54, !17, !17, !50, null,  null} ; [ DW_TAG_compile_unit ]
-!3 = !{!"0x15\00\000\000\000\000\000\000", !54, !1, i32 0, !4, i32 0} ; [ DW_TAG_subroutine_type ]
+!0 = !MDSubprogram(name: "test0001", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, file: !54, scope: null, type: !3, function: <4 x float> (float)* @test0001, variables: !51)
+!1 = !MDFile(filename: "build2.c", directory: "/private/tmp")
+!2 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 129915)", isOptimized: true, emissionKind: 1, file: !54, enums: !17, retainedTypes: !17, subprograms: !50, imports:  null)
+!3 = !MDSubroutineType(types: !4)
 !4 = !{!5}
-!5 = !{!"0x16\00v4f32\0014\000\000\000\000", !54, !2, !6} ; [ DW_TAG_typedef ]
-!6 = !{!"0x1\00\000\00128\00128\000\000", !54, !2, !7, !8, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 128, align 128, offset 0] [from float]
-!7 = !{!"0x24\00float\000\0032\0032\000\000\004", null, !2} ; [ DW_TAG_base_type ]
+!5 = !MDDerivedType(tag: DW_TAG_typedef, name: "v4f32", line: 14, file: !54, scope: !2, baseType: !6)
+!6 = !MDCompositeType(tag: DW_TAG_array_type, size: 128, align: 128, file: !54, scope: !2, baseType: !7, elements: !8)
+!7 = !MDBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
 !8 = !{!9}
-!9 = !{!"0x21\000\004"}         ; [ DW_TAG_subrange_type ]
-!10 = !{!"0x2e\00main\00main\00\0059\000\001\000\006\00256\001\000", !54, null, !11, null, i32 (i32, i8**, i1)* @main, null, null, !52} ; [ DW_TAG_subprogram ] [line 59] [def] [scope 0] [main]
-!11 = !{!"0x15\00\000\000\000\000\000\000", !54, !1, null, !12, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!9 = !MDSubrange(count: 4)
+!10 = !MDSubprogram(name: "main", line: 59, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, file: !54, scope: null, type: !11, function: i32 (i32, i8**, i1)* @main, variables: !52)
+!11 = !MDSubroutineType(types: !12)
 !12 = !{!13}
-!13 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !2} ; [ DW_TAG_base_type ]
-!14 = !{!"0x2e\00printFV\00printFV\00\0041\001\001\000\006\00256\001\000", !55, null, !16, null, null, null, null, !53} ; [ DW_TAG_subprogram ] [line 41] [local] [def] [scope 0] [printFV]
-!15 = !{!"0x29", !55} ; [ DW_TAG_file_type ]
-!16 = !{!"0x15\00\000\000\000\000\000\000", !55, !15, null, !17, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!13 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!14 = !MDSubprogram(name: "printFV", line: 41, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, file: !55, scope: null, type: !16, variables: !53)
+!15 = !MDFile(filename: "/Volumes/Lalgate/work/llvm/projects/llvm-test/SingleSource/UnitTests/Vector/helpers.h", directory: "/private/tmp")
+!16 = !MDSubroutineType(types: !17)
 !17 = !{null}
-!18 = !{!"0x101\00a\0016777219\000", !0, !1, !7} ; [ DW_TAG_arg_variable ]
-!19 = !{!"0x101\00argc\0016777275\000", !10, !1, !13} ; [ DW_TAG_arg_variable ]
-!20 = !{!"0x101\00argv\0033554491\000", !10, !1, !21} ; [ DW_TAG_arg_variable ]
-!21 = !{!"0xf\00\000\0032\0032\000\000", null, !2, !22} ; [ DW_TAG_pointer_type ]
-!22 = !{!"0xf\00\000\0032\0032\000\000", null, !2, !23} ; [ DW_TAG_pointer_type ]
-!23 = !{!"0x24\00char\000\008\008\000\000\006", null, !2} ; [ DW_TAG_base_type ]
-!24 = !{!"0x100\00i\0060\000", !25, !1, !13} ; [ DW_TAG_auto_variable ]
-!25 = !{!"0xb\0059\0033\0014", !1, !10} ; [ DW_TAG_lexical_block ]
-!26 = !{!"0x100\00j\0060\000", !25, !1, !13} ; [ DW_TAG_auto_variable ]
-!27 = !{!"0x100\00x\0061\000", !25, !1, !5} ; [ DW_TAG_auto_variable ]
-!28 = !{!"0x100\00y\0062\000", !25, !1, !5} ; [ DW_TAG_auto_variable ]
-!29 = !{!"0x100\00z\0063\000", !25, !1, !5} ; [ DW_TAG_auto_variable ]
-!30 = !{!"0x101\00F\0016777257\000", !14, !15, !31} ; [ DW_TAG_arg_variable ]
-!31 = !{!"0xf\00\000\0032\0032\000\000", null, !2, !32} ; [ DW_TAG_pointer_type ]
-!32 = !{!"0x16\00FV\0025\000\000\000\000", !55, !2, !33} ; [ DW_TAG_typedef ]
-!33 = !{!"0x17\00\0022\00128\00128\000\000\000", !55, !2, i32 0, !34, null} ; [ DW_TAG_union_type ]
+!18 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 3, arg: 1, scope: !0, file: !1, type: !7)
+!19 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "argc", line: 59, arg: 1, scope: !10, file: !1, type: !13)
+!20 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "argv", line: 59, arg: 2, scope: !10, file: !1, type: !21)
+!21 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !22)
+!22 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !23)
+!23 = !MDBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
+!24 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i", line: 60, scope: !25, file: !1, type: !13)
+!25 = distinct !MDLexicalBlock(line: 59, column: 33, file: !1, scope: !10)
+!26 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "j", line: 60, scope: !25, file: !1, type: !13)
+!27 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "x", line: 61, scope: !25, file: !1, type: !5)
+!28 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "y", line: 62, scope: !25, file: !1, type: !5)
+!29 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "z", line: 63, scope: !25, file: !1, type: !5)
+!30 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "F", line: 41, arg: 1, scope: !14, file: !15, type: !31)
+!31 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !32)
+!32 = !MDDerivedType(tag: DW_TAG_typedef, name: "FV", line: 25, file: !55, scope: !2, baseType: !33)
+!33 = !MDCompositeType(tag: DW_TAG_union_type, line: 22, size: 128, align: 128, file: !55, scope: !2, elements: !34)
 !34 = !{!35, !37}
-!35 = !{!"0xd\00V\0023\00128\00128\000\000", !55, !15, !36} ; [ DW_TAG_member ]
-!36 = !{!"0x16\00v4sf\003\000\000\000\000", !55, !2, !6} ; [ DW_TAG_typedef ]
-!37 = !{!"0xd\00A\0024\00128\0032\000\000", !55, !15, !38} ; [ DW_TAG_member ]
-!38 = !{!"0x1\00\000\00128\0032\000\000", null, !2, !7, !8, i32 0, i32 0} ; [ DW_TAG_array_type ]
+!35 = !MDDerivedType(tag: DW_TAG_member, name: "V", line: 23, size: 128, align: 128, file: !55, scope: !15, baseType: !36)
+!36 = !MDDerivedType(tag: DW_TAG_typedef, name: "v4sf", line: 3, file: !55, scope: !2, baseType: !6)
+!37 = !MDDerivedType(tag: DW_TAG_member, name: "A", line: 24, size: 128, align: 32, file: !55, scope: !15, baseType: !38)
+!38 = !MDCompositeType(tag: DW_TAG_array_type, size: 128, align: 32, scope: !2, baseType: !7, elements: !8)
 !39 = !MDLocation(line: 79, column: 7, scope: !40)
-!40 = !{!"0xb\0075\0035\0018", !1, !41} ; [ DW_TAG_lexical_block ]
-!41 = !{!"0xb\0075\005\0017", !1, !42} ; [ DW_TAG_lexical_block ]
-!42 = !{!"0xb\0071\0032\0016", !1, !43} ; [ DW_TAG_lexical_block ]
-!43 = !{!"0xb\0071\003\0015", !1, !25} ; [ DW_TAG_lexical_block ]
+!40 = distinct !MDLexicalBlock(line: 75, column: 35, file: !1, scope: !41)
+!41 = distinct !MDLexicalBlock(line: 75, column: 5, file: !1, scope: !42)
+!42 = distinct !MDLexicalBlock(line: 71, column: 32, file: !1, scope: !43)
+!43 = distinct !MDLexicalBlock(line: 71, column: 3, file: !1, scope: !25)
 !44 = !MDLocation(line: 75, column: 5, scope: !42)
 !45 = !MDLocation(line: 42, column: 2, scope: !46, inlinedAt: !48)
-!46 = !{!"0xb\0042\002\0020", !15, !47} ; [ DW_TAG_lexical_block ]
-!47 = !{!"0xb\0041\0028\0019", !15, !14} ; [ DW_TAG_lexical_block ]
+!46 = distinct !MDLexicalBlock(line: 42, column: 2, file: !15, scope: !47)
+!47 = distinct !MDLexicalBlock(line: 41, column: 28, file: !15, scope: !14)
 !48 = !MDLocation(line: 95, column: 3, scope: !25)
 !49 = !MDLocation(line: 99, column: 3, scope: !25)
 !50 = !{!0, !10, !14}
 !51 = !{!18}
 !52 = !{!19, !20, !24, !26, !27, !28, !29}
 !53 = !{!30}
-!54 = !{!"build2.c", !"/private/tmp"}
-!55 = !{!"/Volumes/Lalgate/work/llvm/projects/llvm-test/SingleSource/UnitTests/Vector/helpers.h", !"/private/tmp"}
-!56 = !{i32 1, !"Debug Info Version", i32 2}
+!54 = !MDFile(filename: "build2.c", directory: "/private/tmp")
+!55 = !MDFile(filename: "/Volumes/Lalgate/work/llvm/projects/llvm-test/SingleSource/UnitTests/Vector/helpers.h", directory: "/private/tmp")
+!56 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/debug-info-d16-reg.ll b/llvm/test/CodeGen/ARM/debug-info-d16-reg.ll
index 301bce82ca3..30815b339dc 100644
--- a/llvm/test/CodeGen/ARM/debug-info-d16-reg.ll
+++ b/llvm/test/CodeGen/ARM/debug-info-d16-reg.ll
@@ -12,9 +12,9 @@ target triple = "thumbv7-apple-darwin10"
 
 define i32 @inlineprinter(i8* %ptr, double %val, i8 zeroext %c) nounwind optsize {
 entry:
-  tail call void @llvm.dbg.value(metadata i8* %ptr, i64 0, metadata !19, metadata !{!"0x102"}), !dbg !26
-  tail call void @llvm.dbg.value(metadata double %val, i64 0, metadata !20, metadata !{!"0x102"}), !dbg !26
-  tail call void @llvm.dbg.value(metadata i8 %c, i64 0, metadata !21, metadata !{!"0x102"}), !dbg !26
+  tail call void @llvm.dbg.value(metadata i8* %ptr, i64 0, metadata !19, metadata !MDExpression()), !dbg !26
+  tail call void @llvm.dbg.value(metadata double %val, i64 0, metadata !20, metadata !MDExpression()), !dbg !26
+  tail call void @llvm.dbg.value(metadata i8 %c, i64 0, metadata !21, metadata !MDExpression()), !dbg !26
   %0 = zext i8 %c to i32, !dbg !27
   %1 = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.str, i32 0, i32 0), i8* %ptr, double %val, i32 %0) nounwind, !dbg !27
   ret i32 0, !dbg !29
@@ -22,9 +22,9 @@ entry:
 
 define i32 @printer(i8* %ptr, double %val, i8 zeroext %c) nounwind optsize noinline {
 entry:
-  tail call void @llvm.dbg.value(metadata i8* %ptr, i64 0, metadata !16, metadata !{!"0x102"}), !dbg !30
-  tail call void @llvm.dbg.value(metadata double %val, i64 0, metadata !17, metadata !{!"0x102"}), !dbg !30
-  tail call void @llvm.dbg.value(metadata i8 %c, i64 0, metadata !18, metadata !{!"0x102"}), !dbg !30
+  tail call void @llvm.dbg.value(metadata i8* %ptr, i64 0, metadata !16, metadata !MDExpression()), !dbg !30
+  tail call void @llvm.dbg.value(metadata double %val, i64 0, metadata !17, metadata !MDExpression()), !dbg !30
+  tail call void @llvm.dbg.value(metadata i8 %c, i64 0, metadata !18, metadata !MDExpression()), !dbg !30
   %0 = zext i8 %c to i32, !dbg !31
   %1 = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.str, i32 0, i32 0), i8* %ptr, double %val, i32 %0) nounwind, !dbg !31
   ret i32 0, !dbg !33
@@ -36,18 +36,18 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 
 define i32 @main(i32 %argc, i8** nocapture %argv) nounwind optsize {
 entry:
-  tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !22, metadata !{!"0x102"}), !dbg !34
-  tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !23, metadata !{!"0x102"}), !dbg !34
+  tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !22, metadata !MDExpression()), !dbg !34
+  tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !23, metadata !MDExpression()), !dbg !34
   %0 = sitofp i32 %argc to double, !dbg !35
   %1 = fadd double %0, 5.555552e+05, !dbg !35
-  tail call void @llvm.dbg.value(metadata double %1, i64 0, metadata !24, metadata !{!"0x102"}), !dbg !35
+  tail call void @llvm.dbg.value(metadata double %1, i64 0, metadata !24, metadata !MDExpression()), !dbg !35
   %2 = tail call i32 @puts(i8* getelementptr inbounds ([6 x i8]* @.str1, i32 0, i32 0)) nounwind, !dbg !36
   %3 = getelementptr inbounds i8, i8* bitcast (i32 (i32, i8**)* @main to i8*), i32 %argc, !dbg !37
   %4 = trunc i32 %argc to i8, !dbg !37
   %5 = add i8 %4, 97, !dbg !37
-  tail call void @llvm.dbg.value(metadata i8* %3, i64 0, metadata !19, metadata !{!"0x102"}) nounwind, !dbg !38
-  tail call void @llvm.dbg.value(metadata double %1, i64 0, metadata !20, metadata !{!"0x102"}) nounwind, !dbg !38
-  tail call void @llvm.dbg.value(metadata i8 %5, i64 0, metadata !21, metadata !{!"0x102"}) nounwind, !dbg !38
+  tail call void @llvm.dbg.value(metadata i8* %3, i64 0, metadata !19, metadata !MDExpression()) nounwind, !dbg !38
+  tail call void @llvm.dbg.value(metadata double %1, i64 0, metadata !20, metadata !MDExpression()) nounwind, !dbg !38
+  tail call void @llvm.dbg.value(metadata i8 %5, i64 0, metadata !21, metadata !MDExpression()) nounwind, !dbg !38
   %6 = zext i8 %5 to i32, !dbg !39
   %7 = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.str, i32 0, i32 0), i8* %3, double %1, i32 %6) nounwind, !dbg !39
   %8 = tail call i32 @printer(i8* %3, double %1, i8 zeroext %5) nounwind, !dbg !40
@@ -59,39 +59,39 @@ declare i32 @puts(i8* nocapture) nounwind
 !llvm.dbg.cu = !{!2}
 !llvm.module.flags = !{!48}
 
-!0 = !{!"0x2e\00printer\00printer\00printer\0012\000\001\000\006\00256\001\0012", !46, !1, !3, null, i32 (i8*, double, i8)* @printer, null, null, !43} ; [ DW_TAG_subprogram ]
-!1 = !{!"0x29", !46} ; [ DW_TAG_file_type ]
-!2 = !{!"0x11\001\00(LLVM build 00)\001\00\000\00\001", !46, !47, !47, !42, null,  null} ; [ DW_TAG_compile_unit ]
-!3 = !{!"0x15\00\000\000\000\000\000\000", !46, !1, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!0 = !MDSubprogram(name: "printer", linkageName: "printer", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 12, file: !46, scope: !1, type: !3, function: i32 (i8*, double, i8)* @printer, variables: !43)
+!1 = !MDFile(filename: "a.c", directory: "/tmp/")
+!2 = !MDCompileUnit(language: DW_LANG_C89, producer: "(LLVM build 00)", isOptimized: true, emissionKind: 1, file: !46, enums: !47, retainedTypes: !47, subprograms: !42, imports:  null)
+!3 = !MDSubroutineType(types: !4)
 !4 = !{!5, !6, !7, !8}
-!5 = !{!"0x24\00int\000\0032\0032\000\000\005", !46, !1} ; [ DW_TAG_base_type ]
-!6 = !{!"0xf\00\000\0032\0032\000\000", !46, !1, null} ; [ DW_TAG_pointer_type ]
-!7 = !{!"0x24\00double\000\0064\0032\000\000\004", !46, !1} ; [ DW_TAG_base_type ]
-!8 = !{!"0x24\00unsigned char\000\008\008\000\000\008", !46, !1} ; [ DW_TAG_base_type ]
-!9 = !{!"0x2e\00inlineprinter\00inlineprinter\00inlineprinter\005\000\001\000\006\00256\001\005", !46, !1, !3, null, i32 (i8*, double, i8)* @inlineprinter, null, null, !44} ; [ DW_TAG_subprogram ]
-!10 = !{!"0x2e\00main\00main\00main\0018\000\001\000\006\00256\001\0018", !46, !1, !11, null, i32 (i32, i8**)* @main, null, null, !45} ; [ DW_TAG_subprogram ]
-!11 = !{!"0x15\00\000\000\000\000\000\000", !46, !1, null, !12, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!5 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!6 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !46, scope: !1, baseType: null)
+!7 = !MDBasicType(tag: DW_TAG_base_type, name: "double", size: 64, align: 32, encoding: DW_ATE_float)
+!8 = !MDBasicType(tag: DW_TAG_base_type, name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
+!9 = !MDSubprogram(name: "inlineprinter", linkageName: "inlineprinter", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 5, file: !46, scope: !1, type: !3, function: i32 (i8*, double, i8)* @inlineprinter, variables: !44)
+!10 = !MDSubprogram(name: "main", linkageName: "main", line: 18, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 18, file: !46, scope: !1, type: !11, function: i32 (i32, i8**)* @main, variables: !45)
+!11 = !MDSubroutineType(types: !12)
 !12 = !{!5, !5, !13}
-!13 = !{!"0xf\00\000\0032\0032\000\000", !46, !1, !14} ; [ DW_TAG_pointer_type ]
-!14 = !{!"0xf\00\000\0032\0032\000\000", !46, !1, !15} ; [ DW_TAG_pointer_type ]
-!15 = !{!"0x24\00char\000\008\008\000\000\006", !46, !1} ; [ DW_TAG_base_type ]
-!16 = !{!"0x101\00ptr\0011\000", !0, !1, !6} ; [ DW_TAG_arg_variable ]
-!17 = !{!"0x101\00val\0011\000", !0, !1, !7} ; [ DW_TAG_arg_variable ]
-!18 = !{!"0x101\00c\0011\000", !0, !1, !8} ; [ DW_TAG_arg_variable ]
-!19 = !{!"0x101\00ptr\004\000", !9, !1, !6} ; [ DW_TAG_arg_variable ]
-!20 = !{!"0x101\00val\004\000", !9, !1, !7} ; [ DW_TAG_arg_variable ]
-!21 = !{!"0x101\00c\004\000", !9, !1, !8} ; [ DW_TAG_arg_variable ]
-!22 = !{!"0x101\00argc\0017\000", !10, !1, !5} ; [ DW_TAG_arg_variable ]
-!23 = !{!"0x101\00argv\0017\000", !10, !1, !13} ; [ DW_TAG_arg_variable ]
-!24 = !{!"0x100\00dval\0019\000", !25, !1, !7} ; [ DW_TAG_auto_variable ]
-!25 = !{!"0xb\0018\000\002", !46, !10} ; [ DW_TAG_lexical_block ]
+!13 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !46, scope: !1, baseType: !14)
+!14 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !46, scope: !1, baseType: !15)
+!15 = !MDBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
+!16 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "ptr", line: 11, arg: 0, scope: !0, file: !1, type: !6)
+!17 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "val", line: 11, arg: 0, scope: !0, file: !1, type: !7)
+!18 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "c", line: 11, arg: 0, scope: !0, file: !1, type: !8)
+!19 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "ptr", line: 4, arg: 0, scope: !9, file: !1, type: !6)
+!20 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "val", line: 4, arg: 0, scope: !9, file: !1, type: !7)
+!21 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "c", line: 4, arg: 0, scope: !9, file: !1, type: !8)
+!22 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "argc", line: 17, arg: 0, scope: !10, file: !1, type: !5)
+!23 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "argv", line: 17, arg: 0, scope: !10, file: !1, type: !13)
+!24 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "dval", line: 19, scope: !25, file: !1, type: !7)
+!25 = distinct !MDLexicalBlock(line: 18, column: 0, file: !46, scope: !10)
 !26 = !MDLocation(line: 4, scope: !9)
 !27 = !MDLocation(line: 6, scope: !28)
-!28 = !{!"0xb\005\000\001", !46, !9} ; [ DW_TAG_lexical_block ]
+!28 = distinct !MDLexicalBlock(line: 5, column: 0, file: !46, scope: !9)
 !29 = !MDLocation(line: 7, scope: !28)
 !30 = !MDLocation(line: 11, scope: !0)
 !31 = !MDLocation(line: 13, scope: !32)
-!32 = !{!"0xb\0012\000\000", !46, !0} ; [ DW_TAG_lexical_block ]
+!32 = distinct !MDLexicalBlock(line: 12, column: 0, file: !46, scope: !0)
 !33 = !MDLocation(line: 14, scope: !32)
 !34 = !MDLocation(line: 17, scope: !10)
 !35 = !MDLocation(line: 19, scope: !25)
@@ -105,6 +105,6 @@ declare i32 @puts(i8* nocapture) nounwind
 !43 = !{!16, !17, !18}
 !44 = !{!19, !20, !21}
 !45 = !{!22, !23, !24}
-!46 = !{!"a.c", !"/tmp/"}
+!46 = !MDFile(filename: "a.c", directory: "/tmp/")
 !47 = !{i32 0}
-!48 = !{i32 1, !"Debug Info Version", i32 2}
+!48 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/debug-info-qreg.ll b/llvm/test/CodeGen/ARM/debug-info-qreg.ll
index 75cdd578ec3..7e6cc9750d5 100644
--- a/llvm/test/CodeGen/ARM/debug-info-qreg.ll
+++ b/llvm/test/CodeGen/ARM/debug-info-qreg.ll
@@ -24,7 +24,7 @@ for.body9:                                        ; preds = %for.body9, %entry
   br i1 undef, label %for.end54, label %for.body9, !dbg !44
 
 for.end54:                                        ; preds = %for.body9
-  tail call void @llvm.dbg.value(metadata <4 x float> %add19, i64 0, metadata !27, metadata !{!"0x102"}), !dbg !39
+  tail call void @llvm.dbg.value(metadata <4 x float> %add19, i64 0, metadata !27, metadata !MDExpression()), !dbg !39
   %tmp115 = extractelement <4 x float> %add19, i32 1
   %conv6.i75 = fpext float %tmp115 to double, !dbg !45
   %call.i82 = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([13 x i8]* @.str, i32 0, i32 0), double undef, double %conv6.i75, double undef, double undef) nounwind, !dbg !45
@@ -38,60 +38,60 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !llvm.dbg.cu = !{!2}
 !llvm.module.flags = !{!56}
 
-!0 = !{!"0x2e\00test0001\00test0001\00\003\000\001\000\006\00256\001\003", !54, !1, !3, null, <4 x float> (float)* @test0001, null, null, !51} ; [ DW_TAG_subprogram ] [line 3] [def] [test0001]
-!1 = !{!"0x29", !54} ; [ DW_TAG_file_type ]
-!2 = !{!"0x11\0012\00clang version 3.0 (trunk 129915)\001\00\000\00\001", !54, !17, !17, !50, null,  null} ; [ DW_TAG_compile_unit ]
-!3 = !{!"0x15\00\000\000\000\000\000\000", !54, !1, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!0 = !MDSubprogram(name: "test0001", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 3, file: !54, scope: !1, type: !3, function: <4 x float> (float)* @test0001, variables: !51)
+!1 = !MDFile(filename: "build2.c", directory: "/private/tmp")
+!2 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 129915)", isOptimized: true, emissionKind: 1, file: !54, enums: !17, retainedTypes: !17, subprograms: !50, imports:  null)
+!3 = !MDSubroutineType(types: !4)
 !4 = !{!5}
-!5 = !{!"0x16\00v4f32\0014\000\000\000\000", !54, !2, !6} ; [ DW_TAG_typedef ]
-!6 = !{!"0x1\00\000\00128\00128\000\000", !2, null, !7, !8, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 128, align 128, offset 0] [from float]
-!7 = !{!"0x24\00float\000\0032\0032\000\000\004", null, !2} ; [ DW_TAG_base_type ]
+!5 = !MDDerivedType(tag: DW_TAG_typedef, name: "v4f32", line: 14, file: !54, scope: !2, baseType: !6)
+!6 = !MDCompositeType(tag: DW_TAG_array_type, size: 128, align: 128, file: !2, baseType: !7, elements: !8)
+!7 = !MDBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
 !8 = !{!9}
-!9 = !{!"0x21\000\004"}         ; [ DW_TAG_subrange_type ]
-!10 = !{!"0x2e\00main\00main\00\0059\000\001\000\006\00256\001\0059", !54, !1, !11, null, i32 (i32, i8**)* @main, null, null, !52} ; [ DW_TAG_subprogram ] [line 59] [def] [main]
-!11 = !{!"0x15\00\000\000\000\000\000\000", !54, !1, null, !12, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!9 = !MDSubrange(count: 4)
+!10 = !MDSubprogram(name: "main", line: 59, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 59, file: !54, scope: !1, type: !11, function: i32 (i32, i8**)* @main, variables: !52)
+!11 = !MDSubroutineType(types: !12)
 !12 = !{!13}
-!13 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !2} ; [ DW_TAG_base_type ]
-!14 = !{!"0x2e\00printFV\00printFV\00\0041\001\001\000\006\00256\001\0041", !55, !15, !16, null, null, null, null, !53} ; [ DW_TAG_subprogram ] [line 41] [local] [def] [printFV]
-!15 = !{!"0x29", !55} ; [ DW_TAG_file_type ]
-!16 = !{!"0x15\00\000\000\000\000\000\000", !55, !15, null, !17, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!13 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!14 = !MDSubprogram(name: "printFV", line: 41, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 41, file: !55, scope: !15, type: !16, variables: !53)
+!15 = !MDFile(filename: "/Volumes/Lalgate/work/llvm/projects/llvm-test/SingleSource/UnitTests/Vector/helpers.h", directory: "/private/tmp")
+!16 = !MDSubroutineType(types: !17)
 !17 = !{null}
-!18 = !{!"0x101\00a\0016777219\000", !0, !1, !7} ; [ DW_TAG_arg_variable ]
-!19 = !{!"0x101\00argc\0016777275\000", !10, !1, !13} ; [ DW_TAG_arg_variable ]
-!20 = !{!"0x101\00argv\0033554491\000", !10, !1, !21} ; [ DW_TAG_arg_variable ]
-!21 = !{!"0xf\00\000\0032\0032\000\000", null, !2, !22} ; [ DW_TAG_pointer_type ]
-!22 = !{!"0xf\00\000\0032\0032\000\000", null, !2, !23} ; [ DW_TAG_pointer_type ]
-!23 = !{!"0x24\00char\000\008\008\000\000\006", null, !2} ; [ DW_TAG_base_type ]
-!24 = !{!"0x100\00i\0060\000", !25, !1, !13} ; [ DW_TAG_auto_variable ]
-!25 = !{!"0xb\0059\0033\0014", !54, !10} ; [ DW_TAG_lexical_block ]
-!26 = !{!"0x100\00j\0060\000", !25, !1, !13} ; [ DW_TAG_auto_variable ]
-!27 = !{!"0x100\00x\0061\000", !25, !1, !5} ; [ DW_TAG_auto_variable ]
-!28 = !{!"0x100\00y\0062\000", !25, !1, !5} ; [ DW_TAG_auto_variable ]
-!29 = !{!"0x100\00z\0063\000", !25, !1, !5} ; [ DW_TAG_auto_variable ]
-!30 = !{!"0x101\00F\0016777257\000", !14, !15, !31} ; [ DW_TAG_arg_variable ]
-!31 = !{!"0xf\00\000\0032\0032\000\000", null, !2, !32} ; [ DW_TAG_pointer_type ]
-!32 = !{!"0x16\00FV\0025\000\000\000\000", !55, !2, !33} ; [ DW_TAG_typedef ]
-!33 = !{!"0x17\00\0022\00128\00128\000\000\000", !55, !2, i32 0, !34, null} ; [ DW_TAG_union_type ]
+!18 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 3, arg: 1, scope: !0, file: !1, type: !7)
+!19 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "argc", line: 59, arg: 1, scope: !10, file: !1, type: !13)
+!20 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "argv", line: 59, arg: 2, scope: !10, file: !1, type: !21)
+!21 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !22)
+!22 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !23)
+!23 = !MDBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
+!24 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i", line: 60, scope: !25, file: !1, type: !13)
+!25 = distinct !MDLexicalBlock(line: 59, column: 33, file: !54, scope: !10)
+!26 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "j", line: 60, scope: !25, file: !1, type: !13)
+!27 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "x", line: 61, scope: !25, file: !1, type: !5)
+!28 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "y", line: 62, scope: !25, file: !1, type: !5)
+!29 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "z", line: 63, scope: !25, file: !1, type: !5)
+!30 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "F", line: 41, arg: 1, scope: !14, file: !15, type: !31)
+!31 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !32)
+!32 = !MDDerivedType(tag: DW_TAG_typedef, name: "FV", line: 25, file: !55, scope: !2, baseType: !33)
+!33 = !MDCompositeType(tag: DW_TAG_union_type, line: 22, size: 128, align: 128, file: !55, scope: !2, elements: !34)
 !34 = !{!35, !37}
-!35 = !{!"0xd\00V\0023\00128\00128\000\000", !55, !15, !36} ; [ DW_TAG_member ]
-!36 = !{!"0x16\00v4sf\003\000\000\000\000", !55, !2, !6} ; [ DW_TAG_typedef ]
-!37 = !{!"0xd\00A\0024\00128\0032\000\000", !55, !15, !38} ; [ DW_TAG_member ]
-!38 = !{!"0x1\00\000\00128\0032\000\000", null, !2, !7, !8, i32 0, i32 0} ; [ DW_TAG_array_type ]
+!35 = !MDDerivedType(tag: DW_TAG_member, name: "V", line: 23, size: 128, align: 128, file: !55, scope: !15, baseType: !36)
+!36 = !MDDerivedType(tag: DW_TAG_typedef, name: "v4sf", line: 3, file: !55, scope: !2, baseType: !6)
+!37 = !MDDerivedType(tag: DW_TAG_member, name: "A", line: 24, size: 128, align: 32, file: !55, scope: !15, baseType: !38)
+!38 = !MDCompositeType(tag: DW_TAG_array_type, size: 128, align: 32, scope: !2, baseType: !7, elements: !8)
 !39 = !MDLocation(line: 79, column: 7, scope: !40)
-!40 = !{!"0xb\0075\0035\0018", !54, !41} ; [ DW_TAG_lexical_block ]
-!41 = !{!"0xb\0075\005\0017", !54, !42} ; [ DW_TAG_lexical_block ]
-!42 = !{!"0xb\0071\0032\0016", !54, !43} ; [ DW_TAG_lexical_block ]
-!43 = !{!"0xb\0071\003\0015", !54, !25} ; [ DW_TAG_lexical_block ]
+!40 = distinct !MDLexicalBlock(line: 75, column: 35, file: !54, scope: !41)
+!41 = distinct !MDLexicalBlock(line: 75, column: 5, file: !54, scope: !42)
+!42 = distinct !MDLexicalBlock(line: 71, column: 32, file: !54, scope: !43)
+!43 = distinct !MDLexicalBlock(line: 71, column: 3, file: !54, scope: !25)
 !44 = !MDLocation(line: 75, column: 5, scope: !42)
 !45 = !MDLocation(line: 42, column: 2, scope: !46, inlinedAt: !48)
-!46 = !{!"0xb\0042\002\0020", !55, !47} ; [ DW_TAG_lexical_block ]
-!47 = !{!"0xb\0041\0028\0019", !55, !14} ; [ DW_TAG_lexical_block ]
+!46 = distinct !MDLexicalBlock(line: 42, column: 2, file: !55, scope: !47)
+!47 = distinct !MDLexicalBlock(line: 41, column: 28, file: !55, scope: !14)
 !48 = !MDLocation(line: 95, column: 3, scope: !25)
 !49 = !MDLocation(line: 99, column: 3, scope: !25)
 !50 = !{!0, !10, !14}
 !51 = !{!18}
 !52 = !{!19, !20, !24, !26, !27, !28, !29}
 !53 = !{!30}
-!54 = !{!"build2.c", !"/private/tmp"}
-!55 = !{!"/Volumes/Lalgate/work/llvm/projects/llvm-test/SingleSource/UnitTests/Vector/helpers.h", !"/private/tmp"}
-!56 = !{i32 1, !"Debug Info Version", i32 2}
+!54 = !MDFile(filename: "build2.c", directory: "/private/tmp")
+!55 = !MDFile(filename: "/Volumes/Lalgate/work/llvm/projects/llvm-test/SingleSource/UnitTests/Vector/helpers.h", directory: "/private/tmp")
+!56 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/debug-info-s16-reg.ll b/llvm/test/CodeGen/ARM/debug-info-s16-reg.ll
index 5aa2ca92a0e..e3f9f231d79 100644
--- a/llvm/test/CodeGen/ARM/debug-info-s16-reg.ll
+++ b/llvm/test/CodeGen/ARM/debug-info-s16-reg.ll
@@ -14,9 +14,9 @@ target triple = "thumbv7-apple-macosx10.6.7"
 
 define i32 @inlineprinter(i8* %ptr, float %val, i8 zeroext %c) nounwind optsize ssp {
 entry:
-  tail call void @llvm.dbg.value(metadata i8* %ptr, i64 0, metadata !8, metadata !{!"0x102"}), !dbg !24
-  tail call void @llvm.dbg.value(metadata float %val, i64 0, metadata !10, metadata !{!"0x102"}), !dbg !25
-  tail call void @llvm.dbg.value(metadata i8 %c, i64 0, metadata !12, metadata !{!"0x102"}), !dbg !26
+  tail call void @llvm.dbg.value(metadata i8* %ptr, i64 0, metadata !8, metadata !MDExpression()), !dbg !24
+  tail call void @llvm.dbg.value(metadata float %val, i64 0, metadata !10, metadata !MDExpression()), !dbg !25
+  tail call void @llvm.dbg.value(metadata i8 %c, i64 0, metadata !12, metadata !MDExpression()), !dbg !26
   %conv = fpext float %val to double, !dbg !27
   %conv3 = zext i8 %c to i32, !dbg !27
   %call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.str, i32 0, i32 0), i8* %ptr, double %conv, i32 %conv3) nounwind optsize, !dbg !27
@@ -27,9 +27,9 @@ declare i32 @printf(i8* nocapture, ...) nounwind optsize
 
 define i32 @printer(i8* %ptr, float %val, i8 zeroext %c) nounwind optsize noinline ssp {
 entry:
-  tail call void @llvm.dbg.value(metadata i8* %ptr, i64 0, metadata !14, metadata !{!"0x102"}), !dbg !30
-  tail call void @llvm.dbg.value(metadata float %val, i64 0, metadata !15, metadata !{!"0x102"}), !dbg !31
-  tail call void @llvm.dbg.value(metadata i8 %c, i64 0, metadata !16, metadata !{!"0x102"}), !dbg !32
+  tail call void @llvm.dbg.value(metadata i8* %ptr, i64 0, metadata !14, metadata !MDExpression()), !dbg !30
+  tail call void @llvm.dbg.value(metadata float %val, i64 0, metadata !15, metadata !MDExpression()), !dbg !31
+  tail call void @llvm.dbg.value(metadata i8 %c, i64 0, metadata !16, metadata !MDExpression()), !dbg !32
   %conv = fpext float %val to double, !dbg !33
   %conv3 = zext i8 %c to i32, !dbg !33
   %call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.str, i32 0, i32 0), i8* %ptr, double %conv, i32 %conv3) nounwind optsize, !dbg !33
@@ -38,19 +38,19 @@ entry:
 
 define i32 @main(i32 %argc, i8** nocapture %argv) nounwind optsize ssp {
 entry:
-  tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !17, metadata !{!"0x102"}), !dbg !36
-  tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !18, metadata !{!"0x102"}), !dbg !37
+  tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !17, metadata !MDExpression()), !dbg !36
+  tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !18, metadata !MDExpression()), !dbg !37
   %conv = sitofp i32 %argc to double, !dbg !38
   %add = fadd double %conv, 5.555552e+05, !dbg !38
   %conv1 = fptrunc double %add to float, !dbg !38
-  tail call void @llvm.dbg.value(metadata float %conv1, i64 0, metadata !22, metadata !{!"0x102"}), !dbg !38
+  tail call void @llvm.dbg.value(metadata float %conv1, i64 0, metadata !22, metadata !MDExpression()), !dbg !38
   %call = tail call i32 @puts(i8* getelementptr inbounds ([6 x i8]* @.str1, i32 0, i32 0)) nounwind optsize, !dbg !39
   %add.ptr = getelementptr i8, i8* bitcast (i32 (i32, i8**)* @main to i8*), i32 %argc, !dbg !40
   %add5 = add nsw i32 %argc, 97, !dbg !40
   %conv6 = trunc i32 %add5 to i8, !dbg !40
-  tail call void @llvm.dbg.value(metadata i8* %add.ptr, i64 0, metadata !8, metadata !{!"0x102"}) nounwind, !dbg !41
-  tail call void @llvm.dbg.value(metadata float %conv1, i64 0, metadata !10, metadata !{!"0x102"}) nounwind, !dbg !42
-  tail call void @llvm.dbg.value(metadata i8 %conv6, i64 0, metadata !12, metadata !{!"0x102"}) nounwind, !dbg !43
+  tail call void @llvm.dbg.value(metadata i8* %add.ptr, i64 0, metadata !8, metadata !MDExpression()) nounwind, !dbg !41
+  tail call void @llvm.dbg.value(metadata float %conv1, i64 0, metadata !10, metadata !MDExpression()) nounwind, !dbg !42
+  tail call void @llvm.dbg.value(metadata i8 %conv6, i64 0, metadata !12, metadata !MDExpression()) nounwind, !dbg !43
   %conv.i = fpext float %conv1 to double, !dbg !44
   %conv3.i = and i32 %add5, 255, !dbg !44
   %call.i = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([11 x i8]* @.str, i32 0, i32 0), i8* %add.ptr, double %conv.i, i32 %conv3.i) nounwind optsize, !dbg !44
@@ -65,41 +65,41 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !llvm.dbg.cu = !{!2}
 !llvm.module.flags = !{!53}
 
-!0 = !{!"0x2e\00inlineprinter\00inlineprinter\00\005\000\001\000\006\00256\001\005", !51, !1, !3, null, i32 (i8*, float, i8)* @inlineprinter, null, null, !48} ; [ DW_TAG_subprogram ] [line 5] [def] [inlineprinter]
-!1 = !{!"0x29", !51} ; [ DW_TAG_file_type ]
-!2 = !{!"0x11\0012\00clang version 3.0 (trunk 129915)\001\00\000\00\001", !51, !52, !52, !47, null,  null} ; [ DW_TAG_compile_unit ]
-!3 = !{!"0x15\00\000\000\000\000\000\000", !51, !1, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!0 = !MDSubprogram(name: "inlineprinter", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 5, file: !51, scope: !1, type: !3, function: i32 (i8*, float, i8)* @inlineprinter, variables: !48)
+!1 = !MDFile(filename: "a.c", directory: "/private/tmp")
+!2 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 129915)", isOptimized: true, emissionKind: 1, file: !51, enums: !52, retainedTypes: !52, subprograms: !47, imports:  null)
+!3 = !MDSubroutineType(types: !4)
 !4 = !{!5}
-!5 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !2} ; [ DW_TAG_base_type ]
-!6 = !{!"0x2e\00printer\00printer\00\0012\000\001\000\006\00256\001\0012", !51, !1, !3, null, i32 (i8*, float, i8)* @printer, null, null, !49} ; [ DW_TAG_subprogram ] [line 12] [def] [printer]
-!7 = !{!"0x2e\00main\00main\00\0018\000\001\000\006\00256\001\0018", !51, !1, !3, null, i32 (i32, i8**)* @main, null, null, !50} ; [ DW_TAG_subprogram ] [line 18] [def] [main]
-!8 = !{!"0x101\00ptr\0016777220\000", !0, !1, !9} ; [ DW_TAG_arg_variable ]
-!9 = !{!"0xf\00\000\0032\0032\000\000", null, !2, null} ; [ DW_TAG_pointer_type ]
-!10 = !{!"0x101\00val\0033554436\000", !0, !1, !11} ; [ DW_TAG_arg_variable ]
-!11 = !{!"0x24\00float\000\0032\0032\000\000\004", null, !2} ; [ DW_TAG_base_type ]
-!12 = !{!"0x101\00c\0050331652\000", !0, !1, !13} ; [ DW_TAG_arg_variable ]
-!13 = !{!"0x24\00unsigned char\000\008\008\000\000\008", null, !2} ; [ DW_TAG_base_type ]
-!14 = !{!"0x101\00ptr\0016777227\000", !6, !1, !9} ; [ DW_TAG_arg_variable ]
-!15 = !{!"0x101\00val\0033554443\000", !6, !1, !11} ; [ DW_TAG_arg_variable ]
-!16 = !{!"0x101\00c\0050331659\000", !6, !1, !13} ; [ DW_TAG_arg_variable ]
-!17 = !{!"0x101\00argc\0016777233\000", !7, !1, !5} ; [ DW_TAG_arg_variable ]
-!18 = !{!"0x101\00argv\0033554449\000", !7, !1, !19} ; [ DW_TAG_arg_variable ]
-!19 = !{!"0xf\00\000\0032\0032\000\000", null, !2, !20} ; [ DW_TAG_pointer_type ]
-!20 = !{!"0xf\00\000\0032\0032\000\000", null, !2, !21} ; [ DW_TAG_pointer_type ]
-!21 = !{!"0x24\00char\000\008\008\000\000\006", null, !2} ; [ DW_TAG_base_type ]
-!22 = !{!"0x100\00dval\0019\000", !23, !1, !11} ; [ DW_TAG_auto_variable ]
-!23 = !{!"0xb\0018\001\002", !51, !7} ; [ DW_TAG_lexical_block ]
+!5 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!6 = !MDSubprogram(name: "printer", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 12, file: !51, scope: !1, type: !3, function: i32 (i8*, float, i8)* @printer, variables: !49)
+!7 = !MDSubprogram(name: "main", line: 18, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 18, file: !51, scope: !1, type: !3, function: i32 (i32, i8**)* @main, variables: !50)
+!8 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "ptr", line: 4, arg: 1, scope: !0, file: !1, type: !9)
+!9 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: null)
+!10 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "val", line: 4, arg: 2, scope: !0, file: !1, type: !11)
+!11 = !MDBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
+!12 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "c", line: 4, arg: 3, scope: !0, file: !1, type: !13)
+!13 = !MDBasicType(tag: DW_TAG_base_type, name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
+!14 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "ptr", line: 11, arg: 1, scope: !6, file: !1, type: !9)
+!15 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "val", line: 11, arg: 2, scope: !6, file: !1, type: !11)
+!16 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "c", line: 11, arg: 3, scope: !6, file: !1, type: !13)
+!17 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "argc", line: 17, arg: 1, scope: !7, file: !1, type: !5)
+!18 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "argv", line: 17, arg: 2, scope: !7, file: !1, type: !19)
+!19 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !20)
+!20 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, scope: !2, baseType: !21)
+!21 = !MDBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
+!22 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "dval", line: 19, scope: !23, file: !1, type: !11)
+!23 = distinct !MDLexicalBlock(line: 18, column: 1, file: !51, scope: !7)
 !24 = !MDLocation(line: 4, column: 22, scope: !0)
 !25 = !MDLocation(line: 4, column: 33, scope: !0)
 !26 = !MDLocation(line: 4, column: 52, scope: !0)
 !27 = !MDLocation(line: 6, column: 3, scope: !28)
-!28 = !{!"0xb\005\001\000", !51, !0} ; [ DW_TAG_lexical_block ]
+!28 = distinct !MDLexicalBlock(line: 5, column: 1, file: !51, scope: !0)
 !29 = !MDLocation(line: 7, column: 3, scope: !28)
 !30 = !MDLocation(line: 11, column: 42, scope: !6)
 !31 = !MDLocation(line: 11, column: 53, scope: !6)
 !32 = !MDLocation(line: 11, column: 72, scope: !6)
 !33 = !MDLocation(line: 13, column: 3, scope: !34)
-!34 = !{!"0xb\0012\001\001", !51, !6} ; [ DW_TAG_lexical_block ]
+!34 = distinct !MDLexicalBlock(line: 12, column: 1, file: !51, scope: !6)
 !35 = !MDLocation(line: 14, column: 3, scope: !34)
 !36 = !MDLocation(line: 17, column: 15, scope: !7)
 !37 = !MDLocation(line: 17, column: 28, scope: !7)
@@ -116,6 +116,6 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !48 = !{!8, !10, !12}
 !49 = !{!14, !15, !16}
 !50 = !{!17, !18, !22}
-!51 = !{!"a.c", !"/private/tmp"}
+!51 = !MDFile(filename: "a.c", directory: "/private/tmp")
 !52 = !{i32 0}
-!53 = !{i32 1, !"Debug Info Version", i32 2}
+!53 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/debug-info-sreg2.ll b/llvm/test/CodeGen/ARM/debug-info-sreg2.ll
index 977a6f27677..df578fd2b3f 100644
--- a/llvm/test/CodeGen/ARM/debug-info-sreg2.ll
+++ b/llvm/test/CodeGen/ARM/debug-info-sreg2.ll
@@ -15,7 +15,7 @@ target triple = "thumbv7-apple-macosx10.6.7"
 define void @_Z3foov() optsize ssp {
 entry:
   %call = tail call float @_Z3barv() optsize, !dbg !11
-  tail call void @llvm.dbg.value(metadata float %call, i64 0, metadata !5, metadata !{!"0x102"}), !dbg !11
+  tail call void @llvm.dbg.value(metadata float %call, i64 0, metadata !5, metadata !MDExpression()), !dbg !11
   %call16 = tail call float @_Z2f2v() optsize, !dbg !12
   %cmp7 = fcmp olt float %call, %call16, !dbg !12
   br i1 %cmp7, label %for.body, label %for.end, !dbg !12
@@ -43,17 +43,17 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!20}
 
-!0 = !{!"0x11\004\00clang version 3.0 (trunk 130845)\001\00\000\00\001", !18, !19, !19, !16, null,  null} ; [ DW_TAG_compile_unit ]
-!1 = !{!"0x2e\00foo\00foo\00_Z3foov\005\000\001\000\006\00256\001\005", !18, !2, !3, null, void ()* @_Z3foov, null, null, !17} ; [ DW_TAG_subprogram ] [line 5] [def] [foo]
-!2 = !{!"0x29", !18} ; [ DW_TAG_file_type ]
-!3 = !{!"0x15\00\000\000\000\000\000\000", !18, !2, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 (trunk 130845)", isOptimized: true, emissionKind: 1, file: !18, enums: !19, retainedTypes: !19, subprograms: !16, imports:  null)
+!1 = !MDSubprogram(name: "foo", linkageName: "_Z3foov", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 5, file: !18, scope: !2, type: !3, function: void ()* @_Z3foov, variables: !17)
+!2 = !MDFile(filename: "k.cc", directory: "/private/tmp")
+!3 = !MDSubroutineType(types: !4)
 !4 = !{null}
-!5 = !{!"0x100\00k\006\000", !6, !2, !7} ; [ DW_TAG_auto_variable ]
-!6 = !{!"0xb\005\0012\000", !18, !1} ; [ DW_TAG_lexical_block ]
-!7 = !{!"0x24\00float\000\0032\0032\000\000\004", null, !0} ; [ DW_TAG_base_type ]
-!8 = !{!"0x100\00y\008\000", !9, !2, !7} ; [ DW_TAG_auto_variable ]
-!9 = !{!"0xb\007\0025\002", !18, !10} ; [ DW_TAG_lexical_block ]
-!10 = !{!"0xb\007\003\001", !18, !6} ; [ DW_TAG_lexical_block ]
+!5 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "k", line: 6, scope: !6, file: !2, type: !7)
+!6 = distinct !MDLexicalBlock(line: 5, column: 12, file: !18, scope: !1)
+!7 = !MDBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
+!8 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "y", line: 8, scope: !9, file: !2, type: !7)
+!9 = distinct !MDLexicalBlock(line: 7, column: 25, file: !18, scope: !10)
+!10 = distinct !MDLexicalBlock(line: 7, column: 3, file: !18, scope: !6)
 !11 = !MDLocation(line: 6, column: 18, scope: !6)
 !12 = !MDLocation(line: 7, column: 3, scope: !6)
 !13 = !MDLocation(line: 8, column: 20, scope: !9)
@@ -61,6 +61,6 @@ declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnon
 !15 = !MDLocation(line: 10, column: 1, scope: !6)
 !16 = !{!1}
 !17 = !{!5, !8}
-!18 = !{!"k.cc", !"/private/tmp"}
+!18 = !MDFile(filename: "k.cc", directory: "/private/tmp")
 !19 = !{i32 0}
-!20 = !{i32 1, !"Debug Info Version", i32 2}
+!20 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/ARM/debug-segmented-stacks.ll b/llvm/test/CodeGen/ARM/debug-segmented-stacks.ll
index 7ea5665a7a9..72027dedec1 100644
--- a/llvm/test/CodeGen/ARM/debug-segmented-stacks.ll
+++ b/llvm/test/CodeGen/ARM/debug-segmented-stacks.ll
@@ -39,37 +39,37 @@ define void @test_basic() #0 {
 ; ARM-linux       .cfi_same_value r5
 }
 
-!0 = !{!"0x11\0012\00clang version 3.5 \000\00\000\00\000", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/var.c] [DW_LANG_C99]
-!1 = !{!"var.c", !"/tmp"}
+!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !MDFile(filename: "var.c", directory: "/tmp")
 !2 = !{}
 !3 = !{!4}
-!4 = !{!"0x2e\00test_basic\00test_basic\00\005\000\001\000\006\00256\000\005", !1, !5, !6, null, void ()* @test_basic, null, null, !2} ; [ DW_TAG_subprogram ] [line 5] [def] [sum]
-!5 = !{!"0x29", !1}          ; [ DW_TAG_file_type ] [/tmp/var.c]
-!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!4 = !MDSubprogram(name: "test_basic", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !5, type: !6, function: void ()* @test_basic, variables: !2)
+!5 = !MDFile(filename: "var.c", directory: "/tmp")
+!6 = !MDSubroutineType(types: !7)
 !7 = !{!8, !8}
-!8 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
+!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !9 = !{i32 2, !"Dwarf Version", i32 4}
-!10 = !{i32 1, !"Debug Info Version", i32 2}
+!10 = !{i32 1, !"Debug Info Version", i32 3}
 !11 = !{!"clang version 3.5 "}
-!12 = !{!"0x101\00count\0016777221\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [count] [line 5]
+!12 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "count", line: 5, arg: 1, scope: !4, file: !5, type: !8)
 !13 = !MDLocation(line: 5, scope: !4)
-!14 = !{!"0x100\00vl\006\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [vl] [line 6]
-!15 = !{!"0x16\00va_list\0030\000\000\000\000", !16, null, !17} ; [ DW_TAG_typedef ] [va_list] [line 30, size 0, align 0, offset 0] [from __builtin_va_list]
-!16 = !{!"/linux-x86_64-high/gcc_4.7.2/dbg/llvm/bin/../lib/clang/3.5/include/stdarg.h", !"/tmp"}
-!17 = !{!"0x16\00__builtin_va_list\006\000\000\000\000", !1, null, !18} ; [ DW_TAG_typedef ] [__builtin_va_list] [line 6, size 0, align 0, offset 0] [from __va_list]
-!18 = !{!"0x13\00__va_list\006\0032\0032\000\000\000", !1, null, null, !19, null, null, null} ; [ DW_TAG_structure_type ] [__va_list] [line 6, size 32, align 32, offset 0] [def] [from ]
+!14 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "vl", line: 6, scope: !4, file: !5, type: !15)
+!15 = !MDDerivedType(tag: DW_TAG_typedef, name: "va_list", line: 30, file: !16, baseType: !17)
+!16 = !MDFile(filename: "/linux-x86_64-high/gcc_4.7.2/dbg/llvm/bin/../lib/clang/3.5/include/stdarg.h", directory: "/tmp")
+!17 = !MDDerivedType(tag: DW_TAG_typedef, name: "__builtin_va_list", line: 6, file: !1, baseType: !18)
+!18 = !MDCompositeType(tag: DW_TAG_structure_type, name: "__va_list", line: 6, size: 32, align: 32, file: !1, elements: !19)
 !19 = !{!20}
-!20 = !{!"0xd\00__ap\006\0032\0032\000\000", !1, !18, !21} ; [ DW_TAG_member ] [__ap] [line 6, size 32, align 32, offset 0] [from ]
-!21 = !{!"0xf\00\000\0032\0032\000\000", null, null, null} ; [ DW_TAG_pointer_type ] [line 0, size 32, align 32, offset 0] [from ]
+!20 = !MDDerivedType(tag: DW_TAG_member, name: "__ap", line: 6, size: 32, align: 32, file: !1, scope: !18, baseType: !21)
+!21 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: null)
 !22 = !MDLocation(line: 6, scope: !4)
 !23 = !MDLocation(line: 7, scope: !4)
-!24 = !{!"0x100\00test_basic\008\000", !4, !5, !8} ; [ DW_TAG_auto_variable ] [sum] [line 8]
+!24 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "test_basic", line: 8, scope: !4, file: !5, type: !8)
 !25 = !MDLocation(line: 8, scope: !4)
-!26 = !{!"0x100\00i\009\000", !27, !5, !8} ; [ DW_TAG_auto_variable ] [i] [line 9]
-!27 = !{!"0xb\009\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [/tmp/var.c]
+!26 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i", line: 9, scope: !27, file: !5, type: !8)
+!27 = distinct !MDLexicalBlock(line: 9, column: 0, file: !1, scope: !4)
 !28 = !MDLocation(line: 9, scope: !27)
 !29 = !MDLocation(line: 10, scope: !30)
-!30 = !{!"0xb\009\000\001", !1, !27} ; [ DW_TAG_lexical_block ] [/tmp/var.c]
+!30 = distinct !MDLexicalBlock(line: 9, column: 0, file: !1, scope: !27)
 !31 = !MDLocation(line: 11, scope: !30)
 !32 = !MDLocation(line: 12, scope: !4)
 !33 = !MDLocation(line: 13, scope: !4)
diff --git a/llvm/test/CodeGen/ARM/vfp-regs-dwarf.ll b/llvm/test/CodeGen/ARM/vfp-regs-dwarf.ll
index b67f770bfd1..70c1e20c5ef 100644
--- a/llvm/test/CodeGen/ARM/vfp-regs-dwarf.ll
+++ b/llvm/test/CodeGen/ARM/vfp-regs-dwarf.ll
@@ -31,14 +31,14 @@ define void @stack_offsets() {
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!8, !9}
 
-!0 = !{!"0x11\0012\00clang version 3.5.0 \000\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/Users/tim/llvm/build/tmp.c] [DW_LANG_C99]
-!1 = !{!"tmp.c", !"/Users/tim/llvm/build"}
+!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !MDFile(filename: "tmp.c", directory: "/Users/tim/llvm/build")
 !2 = !{}
 !3 = !{!4}
-!4 = !{!"0x2e\00bar\00bar\00\001\000\001\000\006\000\000\001", !1, !5, !6, null, void ()* @stack_offsets, null, null, !2} ; [ DW_TAG_subprogram ] [line 1] [def] [bar]
-!5 = !{!"0x29", !1}          ; [ DW_TAG_file_type ] [/Users/tim/llvm/build/tmp.c]
-!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!4 = !MDSubprogram(name: "bar", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !6, function: void ()* @stack_offsets, variables: !2)
+!5 = !MDFile(filename: "tmp.c", directory: "/Users/tim/llvm/build")
+!6 = !MDSubroutineType(types: !7)
 !7 = !{null}
 !8 = !{i32 2, !"Dwarf Version", i32 4}
-!9 = !{i32 1, !"Debug Info Version", i32 2}
+!9 = !{i32 1, !"Debug Info Version", i32 3}