diff --git a/llvm/include/llvm/IR/DebugInfo.h b/llvm/include/llvm/IR/DebugInfo.h
diff --git a/llvm/include/llvm/IR/Metadata.h b/llvm/include/llvm/IR/Metadata.h
@@ -32,9 +32,8 @@ class Module;
 template<typename ValueSubClass, typename ItemParentClass>
   class SymbolTableListTraits;
 
-
 enum LLVMConstants : uint32_t {
-  DEBUG_METADATA_VERSION = 2  // Current debug info version number.
+  DEBUG_METADATA_VERSION = 3 // Current debug info version number.
 };
 
 /// \brief Root of the metadata hierarchy.

diff --git a/llvm/lib/Analysis/ModuleDebugInfoPrinter.cpp b/llvm/lib/Analysis/ModuleDebugInfoPrinter.cpp
@@ -55,28 +55,74 @@ bool ModuleDebugInfoPrinter::runOnModule(Module &M) {
   return false;
 }
 
+static void printFile(raw_ostream &O, StringRef Filename, StringRef Directory,
+                      unsigned Line = 0) {
+  if (Filename.empty())
+    return;
+
+  O << " from ";
+  if (!Directory.empty())
+    O << Directory << "/";
+  O << Filename;
+  if (Line)
+    O << ":" << Line;
+}
+
 void ModuleDebugInfoPrinter::print(raw_ostream &O, const Module *M) const {
+  // Printing the nodes directly isn't particularly helpful (since they
+  // reference other nodes that won't be printed, particularly for the
+  // filenames), so just print a few useful things.
   for (DICompileUnit CU : Finder.compile_units()) {
-    O << "Compile Unit: ";
-    CU.print(O);
+    O << "Compile unit: ";
+    if (const char *Lang = LanguageString(CU.getLanguage()))
+      O << Lang;
+    else
+      O << "unknown-language(" << CU.getLanguage() << ")";
+    printFile(O, CU.getFilename(), CU.getDirectory());
     O << '\n';
   }
 
   for (DISubprogram S : Finder.subprograms()) {
-    O << "Subprogram: ";
-    S.print(O);
+    O << "Subprogram: " << S.getName();
+    printFile(O, S.getFilename(), S.getDirectory(), S.getLineNumber());
+    if (!S.getLinkageName().empty())
+      O << " ('" << S.getLinkageName() << "')";
     O << '\n';
   }
 
   for (DIGlobalVariable GV : Finder.global_variables()) {
-    O << "GlobalVariable: ";
-    GV.print(O);
+    O << "Global variable: " << GV.getName();
+    printFile(O, GV.getFilename(), GV.getDirectory(), GV.getLineNumber());
+    if (!GV.getLinkageName().empty())
+      O << " ('" << GV.getLinkageName() << "')";
     O << '\n';
   }
 
   for (DIType T : Finder.types()) {
-    O << "Type: ";
-    T.print(O);
+    O << "Type:";
+    if (!T.getName().empty())
+      O << ' ' << T.getName();
+    printFile(O, T.getFilename(), T.getDirectory(), T.getLineNumber());
+    if (T.isBasicType()) {
+      DIBasicType BT(T.get());
+      O << " ";
+      if (const char *Encoding =
+              dwarf::AttributeEncodingString(BT.getEncoding()))
+        O << Encoding;
+      else
+        O << "unknown-encoding(" << BT.getEncoding() << ')';
+    } else {
+      O << ' ';
+      if (const char *Tag = dwarf::TagString(T.getTag()))
+        O << Tag;
+      else
+        O << "unknown-tag(" << T.getTag() << ")";
+    }
+    if (T.isCompositeType()) {
+      DICompositeType CT(T.get());
+      if (auto *S = CT.getIdentifier())
+        O << " (identifier: '" << S->getString() << "')";
+    }
     O << '\n';
   }
 }
diff --git a/llvm/lib/IR/AsmWriter.cpp b/llvm/lib/IR/AsmWriter.cpp
@@ -2984,29 +2984,6 @@ void AssemblyWriter::printInstruction(const Instruction &I) {
   printInfoComment(I);
 }
 
-static void WriteMDNodeComment(const MDNode *Node,
-                               formatted_raw_ostream &Out) {
-  if (Node->getNumOperands() < 1)
-    return;
-
-  Metadata *Op = Node->getOperand(0);
-  if (!Op || !isa<MDString>(Op))
-    return;
-
-  DIDescriptor Desc(Node);
-  if (!Desc.Verify())
-    return;
-
-  unsigned Tag = Desc.getTag();
-  Out.PadToColumn(50);
-  if (dwarf::TagString(Tag)) {
-    Out << "; ";
-    Desc.print(Out);
-  } else if (Tag == dwarf::DW_TAG_user_base) {
-    Out << "; [ DW_TAG_user_base ]";
-  }
-}
-
 void AssemblyWriter::writeMDNode(unsigned Slot, const MDNode *Node) {
   Out << '!' << Slot << " = ";
   printMDNodeBody(Node);
@@ -3027,7 +3004,6 @@ void AssemblyWriter::writeAllMDNodes() {
 
 void AssemblyWriter::printMDNodeBody(const MDNode *Node) {
   WriteMDNodeBodyInternal(Out, Node, &TypePrinter, &Machine, TheModule);
-  WriteMDNodeComment(Node, Out);
 }
 
 void AssemblyWriter::writeAllAttributeGroups() {

diff --git a/llvm/lib/IR/DIBuilder.cpp b/llvm/lib/IR/DIBuilder.cpp
diff --git a/llvm/lib/IR/DebugInfo.cpp b/llvm/lib/IR/DebugInfo.cpp
diff --git a/llvm/test/Assembler/2010-02-05-FunctionLocalMetadataBecomesNull.ll b/llvm/test/Assembler/2010-02-05-FunctionLocalMetadataBecomesNull.ll
@@ -13,7 +13,7 @@ target triple = "x86_64-apple-darwin10.2"
 define i32 @main() nounwind readonly {
   %diff1 = alloca i64                             ; <i64*> [#uses=2]
 ; CHECK: call void @llvm.dbg.value(metadata i64 72,
-  call void @llvm.dbg.declare(metadata i64* %diff1, metadata !0, metadata !{!"0x102"})
+  call void @llvm.dbg.declare(metadata i64* %diff1, metadata !0, metadata !MDExpression())
   store i64 72, i64* %diff1, align 8
   %v1 = load %struct.test*, %struct.test** @TestArrayPtr, align 8 ; <%struct.test*> [#uses=1]
   %v2 = ptrtoint %struct.test* %v1 to i64 ; <i64> [#uses=1]
@@ -25,15 +25,15 @@ define i32 @main() nounwind readonly {
 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
 
 !7 = !{!1}
-!6 = !{!"0x11\0012\00clang version 3.0 (trunk 131941)\001\00\000\00\000", !8, !9, !9, !7, null, null} ; [ DW_TAG_compile_unit ]
-!0 = !{!"0x100\00c\002\000", !1, !2, !5} ; [ DW_TAG_auto_variable ]
-!1 = !{!"0x2e\00main\00main\00\001\000\001\000\006\00256\000\001", !8, !2, !3, null, i32 ()* @main, null, null, null} ; [ DW_TAG_subprogram ]
-!2 = !{!"0x29", !8} ; [ DW_TAG_file_type ]
-!3 = !{!"0x15\00\000\000\000\000\000\000", !8, !2, null, !4, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!6 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 131941)", isOptimized: true, emissionKind: 0, file: !8, enums: !9, retainedTypes: !9, subprograms: !7)
+!0 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "c", line: 2, scope: !1, file: !2, type: !5)
+!1 = !MDSubprogram(name: "main", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !8, scope: !2, type: !3, function: i32 ()* @main)
+!2 = !MDFile(filename: "/d/j/debug-test.c", directory: "/Volumes/Data/b")
+!3 = !MDSubroutineType(types: !4)
 !4 = !{!5}
-!5 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !6} ; [ DW_TAG_base_type ]
-!8 = !{!"/d/j/debug-test.c", !"/Volumes/Data/b"}
+!5 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!8 = !MDFile(filename: "/d/j/debug-test.c", directory: "/Volumes/Data/b")
 !9 = !{i32 0}
 
 !llvm.module.flags = !{!10}
-!10 = !{i32 1, !"Debug Info Version", i32 2}
+!10 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/Assembler/drop-debug-info.ll b/llvm/test/Assembler/drop-debug-info.ll
@@ -12,15 +12,15 @@ entry:
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!9}
 
-!0 = !{!"0x11\0012\00clang version 3.5 (trunk 195495) (llvm/trunk 195495:195504M)\000\00\000\00\000", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/Users/manmanren/llvm_gmail/release/../llvm/tools/clang/test/CodeGen/debug-info-version.c] [DW_LANG_C99]
-!1 = !{!"../llvm/tools/clang/test/CodeGen/debug-info-version.c", !"/Users/manmanren/llvm_gmail/release"}
+!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 (trunk 195495) (llvm/trunk 195495:195504M)", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !MDFile(filename: "../llvm/tools/clang/test/CodeGen/debug-info-version.c", directory: "/Users/manmanren/llvm_gmail/release")
 !2 = !{i32 0}
 !3 = !{!4}
-!4 = !{!"0x2e\00main\00main\00\003\000\001\000\006\00256\000\003", !1, !5, !6, null, i32 ()* @main, null, null, !2} ; [ DW_TAG_subprogram ] [line 3] [def] [main]
-!5 = !{!"0x29", !1}          ; [ DW_TAG_file_type ] [/Users/manmanren/llvm_gmail/release/../llvm/tools/clang/test/CodeGen/debug-info-version.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: "main", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !5, type: !6, function: i32 ()* @main, variables: !2)
+!5 = !MDFile(filename: "../llvm/tools/clang/test/CodeGen/debug-info-version.c", directory: "/Users/manmanren/llvm_gmail/release")
+!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 = !{i32 2, !"Dwarf Version", i32 2}
 !12 = !MDLocation(line: 4, scope: !4)
 

diff --git a/llvm/test/Assembler/functionlocal-metadata.ll b/llvm/test/Assembler/functionlocal-metadata.ll
@@ -3,30 +3,30 @@
 
 define void @Foo(i32 %a, i32 %b) {
 entry:
-  call void @llvm.dbg.value(metadata i32* %1, i64 16, metadata !2, metadata !{!"0x102"})
+  call void @llvm.dbg.value(metadata i32* %1, i64 16, metadata !2, metadata !MDExpression())
 ; CHECK: call void @llvm.dbg.value(metadata i32* %1, i64 16, metadata ![[ID2:[0-9]+]], metadata {{.*}})
   %0 = add i32 %a, 1                              ; <i32> [#uses=1]
   %two = add i32 %b, %0                           ; <i32> [#uses=0]
   %1 = alloca i32                                 ; <i32*> [#uses=1]
 
-  call void @llvm.dbg.declare(metadata i32* %1, metadata i32* %1, metadata !{!"0x102"})
+  call void @llvm.dbg.declare(metadata i32* %1, metadata i32* %1, metadata !MDExpression())
 ; CHECK: call void @llvm.dbg.declare(metadata i32* %1, metadata i32* %1, metadata {{.*}})
-  call void @llvm.dbg.declare(metadata i32 %two, metadata i32 %0, metadata !{!"0x102"})
+  call void @llvm.dbg.declare(metadata i32 %two, metadata i32 %0, metadata !MDExpression())
 ; CHECK: call void @llvm.dbg.declare(metadata i32 %two, metadata i32 %0, metadata {{.*}})
-  call void @llvm.dbg.declare(metadata i32* %1, metadata i32 %b, metadata !{!"0x102"})
+  call void @llvm.dbg.declare(metadata i32* %1, metadata i32 %b, metadata !MDExpression())
 ; CHECK: call void @llvm.dbg.declare(metadata i32* %1, metadata i32 %b, metadata {{.*}})
-  call void @llvm.dbg.declare(metadata i32 %a, metadata i32 %a, metadata !{!"0x102"})
+  call void @llvm.dbg.declare(metadata i32 %a, metadata i32 %a, metadata !MDExpression())
 ; CHECK: call void @llvm.dbg.declare(metadata i32 %a, metadata i32 %a, metadata {{.*}})
-  call void @llvm.dbg.declare(metadata i32 %b, metadata i32 %two, metadata !{!"0x102"})
+  call void @llvm.dbg.declare(metadata i32 %b, metadata i32 %two, metadata !MDExpression())
 ; CHECK: call void @llvm.dbg.declare(metadata i32 %b, metadata i32 %two, metadata {{.*}})
 
-  call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !1, metadata !{!"0x102"})
+  call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !1, metadata !MDExpression())
 ; CHECK: call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata ![[ID1:[0-9]+]], metadata {{.*}})
-  call void @llvm.dbg.value(metadata i32 %0, i64 25, metadata !0, metadata !{!"0x102"})
+  call void @llvm.dbg.value(metadata i32 %0, i64 25, metadata !0, metadata !MDExpression())
 ; CHECK: call void @llvm.dbg.value(metadata i32 %0, i64 25, metadata ![[ID0:[0-9]+]], metadata {{.*}})
-  call void @llvm.dbg.value(metadata i32* %1, i64 16, metadata !3, metadata !{!"0x102"})
+  call void @llvm.dbg.value(metadata i32* %1, i64 16, metadata !3, metadata !MDExpression())
 ; CHECK: call void @llvm.dbg.value(metadata i32* %1, i64 16, metadata ![[ID3:[0-9]+]], metadata {{.*}})
-  call void @llvm.dbg.value(metadata !3, i64 12, metadata !2, metadata !{!"0x102"})
+  call void @llvm.dbg.value(metadata !3, i64 12, metadata !2, metadata !MDExpression())
 ; CHECK: call void @llvm.dbg.value(metadata ![[ID3]], i64 12, metadata ![[ID2]], metadata {{.*}})
 
   ret void, !foo !0, !bar !1
@@ -39,7 +39,7 @@ entry:
 !1 = !{i32 4, !"foo"}
 !2 = !{!"bar"}
 !3 = !{!"foo"}
-!4 = !{i32 1, !"Debug Info Version", i32 2}
+!4 = !{i32 1, !"Debug Info Version", i32 3}
 
 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone

diff --git a/llvm/test/Bindings/OCaml/core.ml b/llvm/test/Bindings/OCaml/core.ml
@@ -1443,7 +1443,7 @@ let test_builder () =
 (* End-of-file checks for things like metdata and attributes.
  * CHECK: attributes #0 = {{.*}}uwtable{{.*}}
  * CHECK: !llvm.module.flags = !{!0}
- * CHECK: !0 = !{i32 1, !"Debug Info Version", i32 2}
+ * CHECK: !0 = !{i32 1, !"Debug Info Version", i32 3}
  * CHECK: !1 = !{i32 1, !"metadata test"}
  * CHECK: !2 = !MDLocation(line: 2, column: 3, scope: !3, inlinedAt: !3)
  *)

diff --git a/llvm/test/BugPoint/metadata.ll b/llvm/test/BugPoint/metadata.ll
@@ -6,8 +6,8 @@
 
 ; CHECK: call void @foo(), !dbg ![[LOC:[0-9]+]], !attach ![[CALL:[0-9]+]]
 ; CHECK: ![[LOC]] = !MDLocation(line: 104, column: 105, scope: ![[SCOPE:[0-9]+]], inlinedAt: ![[SCOPE]])
-; CHECK: ![[SCOPE]] = !{!"0x11\000\00me\001\00\000\00\000", ![[FILE:[0-9]+]], ![[LIST:[0-9]+]], ![[LIST]], null, null, null}
-; CHECK: ![[FILE]] = !{!"source.c", !"/dir"}
+; CHECK: ![[SCOPE]] = !MDCompileUnit(language: 0, file: ![[FILE:[0-9]+]], producer: "me", isOptimized: true, runtimeVersion: 0, emissionKind: 0, enums: ![[LIST:[0-9]+]], retainedTypes: ![[LIST]])
+; CHECK: ![[FILE]] = !MDFile(filename: "source.c", directory: "/dir")
 ; CHECK: ![[LIST]] = !{i32 0}
 ; CHECK: ![[CALL]] = !{!"the call to foo"}
 
@@ -31,12 +31,12 @@ declare void @foo()
 !3 = !{!"noise"}
 !4 = !{!"filler"}
 
-!9 = !{!"0x11\000\00me\001\00\000\00\000", !15, !16, !16, null, null, null} ; [ DW_TAG_compile_unit ]
+!9 = !MDCompileUnit(language: 0, producer: "me", isOptimized: true, emissionKind: 0, file: !15, enums: !16, retainedTypes: !16)
 !10 = !MDLocation(line: 100, column: 101, scope: !9, inlinedAt: !9)
 !11 = !MDLocation(line: 102, column: 103, scope: !9, inlinedAt: !9)
 !12 = !MDLocation(line: 104, column: 105, scope: !9, inlinedAt: !9)
 !13 = !MDLocation(line: 106, column: 107, scope: !9, inlinedAt: !9)
 !14 = !MDLocation(line: 108, column: 109, scope: !9, inlinedAt: !9)
-!15 = !{!"source.c", !"/dir"}
+!15 = !MDFile(filename: "source.c", directory: "/dir")
 !16 = !{i32 0}
-!17 = !{i32 1, !"Debug Info Version", i32 2}
+!17 = !{i32 1, !"Debug Info Version", i32 3}
diff --git a/llvm/test/CodeGen/AArch64/aarch64-2014-08-11-MachineCombinerCrash.ll b/llvm/test/CodeGen/AArch64/aarch64-2014-08-11-MachineCombinerCrash.ll
@@ -16,7 +16,7 @@ for.body:                                         ; preds = %for.body, %entry
   %add53 = add nsw i64 %n1, 0, !dbg !52
   %add55 = add nsw i64 %n1, 0, !dbg !53
   %mul63 = mul nsw i64 %add53, -20995, !dbg !54
-  tail call void @llvm.dbg.value(metadata i64 %mul63, i64 0, metadata !30, metadata !{!"0x102"}), !dbg !55
+  tail call void @llvm.dbg.value(metadata i64 %mul63, i64 0, metadata !30, metadata !MDExpression()), !dbg !55
   %mul65 = mul nsw i64 %add55, -3196, !dbg !56
   %add67 = add nsw i64 0, %mul65, !dbg !57
   %add80 = add i64 0, 1024, !dbg !58
@@ -44,51 +44,51 @@ attributes #1 = { nounwind readnone }
 !llvm.module.flags = !{!36, !37}
 !llvm.ident = !{!38}
 
-!0 = !{!"0x11\0012\00clang version 3.6.0 \001\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [] [] []
-!1 = !{!"test.c", !""}
+!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
+!1 = !MDFile(filename: "test.c", directory: "")
 !2 = !{}
 !3 = !{!4}
-!4 = !{!"0x2e\00\00\00\00140\000\001\000\006\00256\001\00141", !1, !5, !6, null, void ()* @test, null, null, !12} ; [ DW_TAG_subprogram ] [] [] [def] [scope 141] []
-!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [] []
-!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [] [] [from ]
+!4 = !MDSubprogram(name: "", line: 140, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 141, file: !1, scope: !5, type: !6, function: void ()* @test, variables: !12)
+!5 = !MDFile(filename: "test.c", directory: "")
+!6 = !MDSubroutineType(types: !7)
 !7 = !{null, !8}
-!8 = !{!"0xf\00\000\0064\0064\000\000", null, null, !9} ; [ DW_TAG_pointer_type ] [] [] []
-!9 = !{!"0x16\00\0030\000\000\000\000", !10, null, !11} ; [ DW_TAG_typedef ] [] [] [] [from int]
-!10 = !{!"", !""}
-!11 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [] [int] []
+!8 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
+!9 = !MDDerivedType(tag: DW_TAG_typedef, line: 30, file: !10, baseType: !11)
+!10 = !MDFile(filename: "", directory: "")
+!11 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
 !12 = !{!13, !14, !18, !19, !20, !21, !22, !23, !24, !25, !26, !27, !28, !29, !30, !31, !32, !33, !34, !35}
-!13 = !{!"0x101\00\0016777356\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [] [data] []
-!14 = !{!"0x100\00\00142\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [] [] []
-!15 = !{!"0x16\00\00183\000\000\000\000", !16, null, !17} ; [ DW_TAG_typedef ] [] [INT32] [] [from long int]
-!16 = !{!"", !""}
-!17 = !{!"0x24\00\000\0064\0064\000\000\005", null, null} ; [ DW_TAG_base_type ] [] [long int] []
-!18 = !{!"0x100\00\00142\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [] [] []
-!19 = !{!"0x100\00\00142\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [] [] []
-!20 = !{!"0x100\00\00142\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [] [] []
-!21 = !{!"0x100\00\00142\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [] [] []
-!22 = !{!"0x100\00\00142\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [] [] []
-!23 = !{!"0x100\00\00142\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [] [] []
-!24 = !{!"0x100\00\00142\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [  ] [] []
-!25 = !{!"0x100\00\00143\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [  ] [] []
-!26 = !{!"0x100\00\00143\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [  ] [] []
-!27 = !{!"0x100\00\00143\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [  ] [] []
-!28 = !{!"0x100\00\00143\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [  ] [] []
-!29 = !{!"0x100\00\00144\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [  ] [] []
-!30 = !{!"0x100\00\00144\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [  ] [] []
-!31 = !{!"0x100\00\00144\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [  ] [] []
-!32 = !{!"0x100\00\00144\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [ ] [] []
-!33 = !{!"0x100\00\00144\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [  ] [] []
-!34 = !{!"0x100\00\00145\000", !4, !5, !8} ; [ DW_TAG_auto_variable ] [  ] [] []
-!35 = !{!"0x100\00\00146\000", !4, !5, !11} ; [ DW_TAG_auto_variable ] [  ] [] []
+!13 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "", line: 140, arg: 1, scope: !4, file: !5, type: !8)
+!14 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 142, scope: !4, file: !5, type: !15)
+!15 = !MDDerivedType(tag: DW_TAG_typedef, line: 183, file: !16, baseType: !17)
+!16 = !MDFile(filename: "", directory: "")
+!17 = !MDBasicType(tag: DW_TAG_base_type, size: 64, align: 64, encoding: DW_ATE_signed)
+!18 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 142, scope: !4, file: !5, type: !15)
+!19 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 142, scope: !4, file: !5, type: !15)
+!20 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 142, scope: !4, file: !5, type: !15)
+!21 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 142, scope: !4, file: !5, type: !15)
+!22 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 142, scope: !4, file: !5, type: !15)
+!23 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 142, scope: !4, file: !5, type: !15)
+!24 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 142, scope: !4, file: !5, type: !15)
+!25 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 143, scope: !4, file: !5, type: !15)
+!26 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 143, scope: !4, file: !5, type: !15)
+!27 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 143, scope: !4, file: !5, type: !15)
+!28 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 143, scope: !4, file: !5, type: !15)
+!29 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 144, scope: !4, file: !5, type: !15)
+!30 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 144, scope: !4, file: !5, type: !15)
+!31 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 144, scope: !4, file: !5, type: !15)
+!32 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 144, scope: !4, file: !5, type: !15)
+!33 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 144, scope: !4, file: !5, type: !15)
+!34 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 145, scope: !4, file: !5, type: !8)
+!35 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "", line: 146, scope: !4, file: !5, type: !11)
 !36 = !{i32 2, !"Dwarf Version", i32 4}
-!37 = !{i32 2, !"Debug Info Version", i32 2}
+!37 = !{i32 2, !"Debug Info Version", i32 3}
 !38 = !{!"clang version 3.6.0 "}
 !39 = !MDLocation(line: 154, column: 8, scope: !40)
-!40 = !{!"0xb\00154\008\002", !1, !41} ; [ DW_TAG_lexical_block ] [  ] []
-!41 = !{!"0xb\00154\008\001", !1, !42} ; [ DW_TAG_lexical_block ] [  ] []
-!42 = !{!"0xb\00154\003\000", !1, !4} ; [ DW_TAG_lexical_block ] [  ] []
+!40 = distinct !MDLexicalBlock(line: 154, column: 8, file: !1, scope: !41)
+!41 = distinct !MDLexicalBlock(line: 154, column: 8, file: !1, scope: !42)
+!42 = distinct !MDLexicalBlock(line: 154, column: 3, file: !1, scope: !4)
 !43 = !MDLocation(line: 157, column: 5, scope: !44)
-!44 = !{!"0xb\00154\0042\000", !1, !42} ; [ DW_TAG_lexical_block ] [  ] []
+!44 = distinct !MDLexicalBlock(line: 154, column: 42, file: !1, scope: !42)
 !45 = !MDLocation(line: 159, column: 5, scope: !44)
 !46 = !{!47, !47, i64 0}
 !47 = !{!"int", !48, i64 0}

diff --git a/llvm/test/CodeGen/AArch64/arm64-2011-03-17-AsmPrinterCrash.ll b/llvm/test/CodeGen/AArch64/arm64-2011-03-17-AsmPrinterCrash.ll
@@ -11,7 +11,7 @@ if.then24:                                        ; preds = %entry
   unreachable
 
 if.else295:                                       ; preds = %entry
-  call void @llvm.dbg.declare(metadata i32* %do_tab_convert, metadata !16, metadata !{!"0x102"}), !dbg !18
+  call void @llvm.dbg.declare(metadata i32* %do_tab_convert, metadata !16, metadata !MDExpression()), !dbg !18
   store i32 0, i32* %do_tab_convert, align 4, !dbg !19
   unreachable
 }
@@ -21,25 +21,25 @@ declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
 !llvm.dbg.gv = !{!0}
 !llvm.dbg.sp = !{!1, !7, !10, !11, !12}
 
-!0 = !{!"0x34\00vsplive\00vsplive\00\00617\001\001", !1, !2, !6, null, null} ; [ DW_TAG_variable ]
-!1 = !{!"0x2e\00drt_vsprintf\00drt_vsprintf\00\00616\000\001\000\006\00256\000\000", !20, !2, !4, null, null, null, null, null} ; [ DW_TAG_subprogram ]
-!2 = !{!"0x29", !20} ; [ DW_TAG_file_type ]
-!3 = !{!"0x11\0012\00clang version 3.0 (http://llvm.org/git/clang.git git:/git/puzzlebox/clang.git/ c4d1aea01c4444eb81bdbf391f1be309127c3cf1)\001\00\000\00\000", !20, !21, !21, null, null, null} ; [ DW_TAG_compile_unit ]
-!4 = !{!"0x15\00\000\000\000\000\000\000", !20, !2, null, !5, i32 0} ; [ DW_TAG_subroutine_type ]
+!0 = !MDGlobalVariable(name: "vsplive", line: 617, isLocal: true, isDefinition: true, scope: !1, file: !2, type: !6)
+!1 = !MDSubprogram(name: "drt_vsprintf", line: 616, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !20, scope: !2, type: !4)
+!2 = !MDFile(filename: "print.i", directory: "/Volumes/Ebi/echeng/radars/r9146594")
+!3 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (http://llvm.org/git/clang.git git:/git/puzzlebox/clang.git/ c4d1aea01c4444eb81bdbf391f1be309127c3cf1)", isOptimized: true, emissionKind: 0, file: !20, enums: !21, retainedTypes: !21)
+!4 = !MDSubroutineType(types: !5)
 !5 = !{!6}
-!6 = !{!"0x24\00int\000\0032\0032\000\000\005", null, !3} ; [ DW_TAG_base_type ]
-!7 = !{!"0x2e\00putc_mem\00putc_mem\00\0030\001\001\000\006\00256\000\000", !20, !2, !8, null, null, null, null, null} ; [ DW_TAG_subprogram ]
-!8 = !{!"0x15\00\000\000\000\000\000\000", !20, !2, null, !9, i32 0} ; [ DW_TAG_subroutine_type ]
+!6 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
+!7 = !MDSubprogram(name: "putc_mem", line: 30, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !20, scope: !2, type: !8)
+!8 = !MDSubroutineType(types: !9)
 !9 = !{null}
-!10 = !{!"0x2e\00print_double\00print_double\00\00203\001\001\000\006\00256\000\000", !20, !2, !4, null, null, null, null, null} ; [ DW_TAG_subprogram ]
-!11 = !{!"0x2e\00print_number\00print_number\00\0075\001\001\000\006\00256\000\000", !20, !2, !4, i32 0, null, null, null, null} ; [ DW_TAG_subprogram ]
-!12 = !{!"0x2e\00get_flags\00get_flags\00\00508\001\001\000\006\00256\000\000", !20, !2, !8, null, null, null, null, null} ; [ DW_TAG_subprogram ]
+!10 = !MDSubprogram(name: "print_double", line: 203, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !20, scope: !2, type: !4)
+!11 = !MDSubprogram(name: "print_number", line: 75, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !20, scope: !2, type: !4)
+!12 = !MDSubprogram(name: "get_flags", line: 508, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !20, scope: !2, type: !8)
 !13 = !MDLocation(line: 653, column: 5, scope: !14)
-!14 = !{!"0xb\00652\0035\002", !20, !15} ; [ DW_TAG_lexical_block ]
-!15 = !{!"0xb\00616\001\000", !20, !1} ; [ DW_TAG_lexical_block ]
-!16 = !{!"0x100\00do_tab_convert\00853\000", !17, !2, !6} ; [ DW_TAG_auto_variable ]
-!17 = !{!"0xb\00850\0012\0033", !20, !14} ; [ DW_TAG_lexical_block ]
+!14 = distinct !MDLexicalBlock(line: 652, column: 35, file: !20, scope: !15)
+!15 = distinct !MDLexicalBlock(line: 616, column: 1, file: !20, scope: !1)
+!16 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "do_tab_convert", line: 853, scope: !17, file: !2, type: !6)
+!17 = distinct !MDLexicalBlock(line: 850, column: 12, file: !20, scope: !14)
 !18 = !MDLocation(line: 853, column: 11, scope: !17)
 !19 = !MDLocation(line: 853, column: 29, scope: !17)
-!20 = !{!"print.i", !"/Volumes/Ebi/echeng/radars/r9146594"}
+!20 = !MDFile(filename: "print.i", directory: "/Volumes/Ebi/echeng/radars/r9146594")
 !21 = !{i32 0}
diff --git 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
@@ -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
@@ -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
@@ -47,30 +47,30 @@ 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)
 !18 = !{i32 0}
 !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
@@ -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
@@ -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
 }
@@ -41,73 +41,73 @@ 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
 }
 
 !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
@@ -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
@@ -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
@@ -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
@@ -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
@@ -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
 
@@ -32,37 +32,37 @@ 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)
 !23 = !MDLocation(line: 11, column: 64, scope: !1)
 !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}