Revert "PR14606: debug info imported_module support"

This reverts commit r179836 as it seems to have caused test failures.

llvm-svn: 179840

Author: echristo

llvm/include/llvm/DIBuilder.h

@@ -37,13 +37,11 @@ namespace llvm {
   class DIType;
   class DIArray;
   class DIGlobalVariable;
-  class DIImportedModule;
   class DINameSpace;
   class DIVariable;
   class DISubrange;
   class DILexicalBlockFile;
   class DILexicalBlock;
-  class DIScope;
   class DISubprogram;
   class DITemplateTypeParameter;
   class DITemplateValueParameter;
@@ -59,7 +57,6 @@ namespace llvm {
     MDNode *TempRetainTypes;
     MDNode *TempSubprograms;
     MDNode *TempGVs;
-    MDNode *TempImportedModules;
 
     Function *DeclareFn;     // llvm.dbg.declare
     Function *ValueFn;       // llvm.dbg.value
@@ -68,7 +65,6 @@ namespace llvm {
     SmallVector<Value *, 4> AllRetainTypes;
     SmallVector<Value *, 4> AllSubprograms;
     SmallVector<Value *, 4> AllGVs;
-    SmallVector<Value *, 4> AllImportedModules;
 
     DIBuilder(const DIBuilder &) LLVM_DELETED_FUNCTION;
     void operator=(const DIBuilder &) LLVM_DELETED_FUNCTION;
@@ -570,13 +566,6 @@ namespace llvm {
     DILexicalBlock createLexicalBlock(DIDescriptor Scope, DIFile File,
                                       unsigned Line, unsigned Col);
 
-    /// \brief Create a descriptor for an imported module.
-    /// @param Context The scope this module is imported into
-    /// @param NS The namespace being imported here
-    /// @param LineNumber Line number
-    DIImportedModule createImportedModule(DIScope Context, DINameSpace NS,
-                                          unsigned Line);
-
     /// insertDeclare - Insert a new llvm.dbg.declare intrinsic call.
     /// @param Storage     llvm::Value of the variable
     /// @param VarInfo     Variable's debug info descriptor.

llvm/include/llvm/DebugInfo.h

@@ -125,7 +125,6 @@ namespace llvm {
     bool isTemplateTypeParameter() const;
     bool isTemplateValueParameter() const;
     bool isObjCProperty() const;
-    bool isImportedModule() const;
 
     /// print - print descriptor.
     void print(raw_ostream &OS) const;
@@ -200,9 +199,8 @@ namespace llvm {
     DIArray getRetainedTypes() const;
     DIArray getSubprograms() const;
     DIArray getGlobalVariables() const;
-    DIArray getImportedModules() const;
 
-    StringRef getSplitDebugFilename() const { return getStringField(12); }
+    StringRef getSplitDebugFilename() const { return getStringField(11); }
 
     /// Verify - Verify that a compile unit is well formed.
     bool Verify() const;
@@ -680,18 +678,6 @@ namespace llvm {
     bool Verify() const;
   };
 
-  /// \brief An imported module (C++ using directive or similar).
-  class DIImportedModule : public DIDescriptor {
-    friend class DIDescriptor;
-    void printInternal(raw_ostream &OS) const;
-  public:
-    explicit DIImportedModule(const MDNode *N) : DIDescriptor(N) { }
-    DIScope getContext() const { return getFieldAs<DIScope>(1); }
-    DINameSpace getNameSpace() const { return getFieldAs<DINameSpace>(2); }
-    unsigned getLineNumber() const { return getUnsignedField(3); }
-    bool Verify() const;
-  };
-
   /// getDISubprogram - Find subprogram that is enclosing this scope.
   DISubprogram getDISubprogram(const MDNode *Scope);
 

llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp

@@ -763,23 +763,6 @@ void DwarfDebug::constructSubprogramDIE(CompileUnit *TheCU,
     TheCU->addGlobalName(SP.getName(), SubprogramDie);
 }
 
-void DwarfDebug::constructImportedModuleDIE(CompileUnit *TheCU,
-                                            const MDNode *N) {
-  DIImportedModule Module(N);
-  if (!Module.Verify())
-    return;
-  DIE *IMDie = new DIE(dwarf::DW_TAG_imported_module);
-  TheCU->insertDIE(Module, IMDie);
-  DIE *NSDie = TheCU->getOrCreateNameSpace(Module.getNameSpace());
-  unsigned FileID = getOrCreateSourceID(Module.getContext().getFilename(),
-                                        Module.getContext().getDirectory(),
-                                        TheCU->getUniqueID());
-  TheCU->addUInt(IMDie, dwarf::DW_AT_decl_file, 0, FileID);
-  TheCU->addUInt(IMDie, dwarf::DW_AT_decl_line, 0, Module.getLineNumber());
-  TheCU->addDIEEntry(IMDie, dwarf::DW_AT_import, dwarf::DW_FORM_ref4, NSDie);
-  TheCU->addToContextOwner(IMDie, Module.getContext());
-}
-
 // Emit all Dwarf sections that should come prior to the content. Create
 // global DIEs and emit initial debug info sections. This is invoked by
 // the target AsmPrinter.
@@ -813,11 +796,6 @@ void DwarfDebug::beginModule() {
     DIArray RetainedTypes = CUNode.getRetainedTypes();
     for (unsigned i = 0, e = RetainedTypes.getNumElements(); i != e; ++i)
       CU->getOrCreateTypeDIE(RetainedTypes.getElement(i));
-    // Emit imported_modules last so that the relevant context is already
-    // available.
-    DIArray ImportedModules = CUNode.getImportedModules();
-    for (unsigned i = 0, e = ImportedModules.getNumElements(); i != e; ++i)
-      constructImportedModuleDIE(CU, ImportedModules.getElement(i));
     // If we're splitting the dwarf out now that we've got the entire
     // CU then construct a skeleton CU based upon it.
     if (useSplitDwarf()) {

llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h

@@ -555,9 +555,6 @@ class DwarfDebug {
   /// \brief Construct subprogram DIE.
   void constructSubprogramDIE(CompileUnit *TheCU, const MDNode *N);
 
-  /// \brief Construct import_module DIE.
-  void constructImportedModuleDIE(CompileUnit *TheCU, const MDNode *N);
-
   /// \brief Register a source line with debug info. Returns the unique
   /// label that was emitted and which provides correspondence to the
   /// source line list.

llvm/lib/IR/DIBuilder.cpp

@@ -61,9 +61,6 @@ void DIBuilder::finalize() {
 
   DIArray GVs = getOrCreateArray(AllGVs);
   DIType(TempGVs).replaceAllUsesWith(GVs);
-
-  DIArray IMs = getOrCreateArray(AllImportedModules);
-  DIType(TempImportedModules).replaceAllUsesWith(IMs);
 }
 
 /// getNonCompileUnitScope - If N is compile unit return NULL otherwise return
@@ -104,8 +101,6 @@ void DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
 
   TempGVs = MDNode::getTemporary(VMContext, TElts);
 
-  TempImportedModules = MDNode::getTemporary(VMContext, TElts);
-
   Value *Elts[] = {
     GetTagConstant(VMContext, dwarf::DW_TAG_compile_unit),
     createFilePathPair(VMContext, Filename, Directory),
@@ -118,7 +113,6 @@ void DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
     TempRetainTypes,
     TempSubprograms,
     TempGVs,
-    TempImportedModules,
     MDString::get(VMContext, SplitName)
   };
   TheCU = DICompileUnit(MDNode::get(VMContext, Elts));
@@ -128,21 +122,6 @@ void DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
   NMD->addOperand(TheCU);
 }
 
-DIImportedModule DIBuilder::createImportedModule(DIScope Context,
-                                                 DINameSpace NS,
-                                                 unsigned Line) {
-  Value *Elts[] = {
-    GetTagConstant(VMContext, dwarf::DW_TAG_imported_module),
-    Context,
-    NS,
-    ConstantInt::get(Type::getInt32Ty(VMContext), Line),
-  };
-  DIImportedModule M(MDNode::get(VMContext, Elts));
-  assert(M.Verify() && "Imported module should be valid");
-  AllImportedModules.push_back(M);
-  return M;
-}
-
 /// createFile - Create a file descriptor to hold debugging information
 /// for a file.
 DIFile DIBuilder::createFile(StringRef Filename, StringRef Directory) {

llvm/lib/IR/DebugInfo.cpp

@@ -64,8 +64,7 @@ bool DIDescriptor::Verify() const {
           DISubrange(DbgNode).Verify() || DIEnumerator(DbgNode).Verify() ||
           DIObjCProperty(DbgNode).Verify() ||
           DITemplateTypeParameter(DbgNode).Verify() ||
-          DITemplateValueParameter(DbgNode).Verify() ||
-          DIImportedModule(DbgNode).Verify());
+          DITemplateValueParameter(DbgNode).Verify());
 }
 
 static Value *getField(const MDNode *DbgNode, unsigned Elt) {
@@ -337,12 +336,6 @@ bool DIDescriptor::isEnumerator() const {
 bool DIDescriptor::isObjCProperty() const {
   return DbgNode && getTag() == dwarf::DW_TAG_APPLE_property;
 }
-
-/// \brief Return true if the specified tag is DW_TAG_imported_module.
-bool DIDescriptor::isImportedModule() const {
-  return DbgNode && getTag() == dwarf::DW_TAG_imported_module;
-}
-
 //===----------------------------------------------------------------------===//
 // Simple Descriptor Constructors and other Methods
 //===----------------------------------------------------------------------===//
@@ -425,7 +418,7 @@ bool DICompileUnit::Verify() const {
   if (N.empty())
     return false;
   // It is possible that directory and produce string is empty.
-  return DbgNode->getNumOperands() == 13;
+  return DbgNode->getNumOperands() == 12;
 }
 
 /// Verify - Verify that an ObjC property is well formed.
@@ -587,11 +580,6 @@ bool DITemplateValueParameter::Verify() const {
   return isTemplateValueParameter() && DbgNode->getNumOperands() == 8;
 }
 
-/// \brief Verify that the imported module descriptor is well formed.
-bool DIImportedModule::Verify() const {
-  return isImportedModule() && DbgNode->getNumOperands() == 4;
-}
-
 /// getOriginalTypeSize - If this type is derived from a base type then
 /// return base type size.
 uint64_t DIDerivedType::getOriginalTypeSize() const {
@@ -706,7 +694,7 @@ StringRef DIScope::getDirectory() const {
 }
 
 DIArray DICompileUnit::getEnumTypes() const {
-  if (!DbgNode || DbgNode->getNumOperands() < 13)
+  if (!DbgNode || DbgNode->getNumOperands() < 12)
     return DIArray();
 
   if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(7)))
@@ -715,7 +703,7 @@ DIArray DICompileUnit::getEnumTypes() const {
 }
 
 DIArray DICompileUnit::getRetainedTypes() const {
-  if (!DbgNode || DbgNode->getNumOperands() < 13)
+  if (!DbgNode || DbgNode->getNumOperands() < 12)
     return DIArray();
 
   if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(8)))
@@ -724,7 +712,7 @@ DIArray DICompileUnit::getRetainedTypes() const {
 }
 
 DIArray DICompileUnit::getSubprograms() const {
-  if (!DbgNode || DbgNode->getNumOperands() < 13)
+  if (!DbgNode || DbgNode->getNumOperands() < 12)
     return DIArray();
 
   if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(9)))
@@ -734,23 +722,14 @@ DIArray DICompileUnit::getSubprograms() const {
 
 
 DIArray DICompileUnit::getGlobalVariables() const {
-  if (!DbgNode || DbgNode->getNumOperands() < 13)
+  if (!DbgNode || DbgNode->getNumOperands() < 12)
     return DIArray();
 
   if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(10)))
     return DIArray(N);
   return DIArray();
 }
 
-DIArray DICompileUnit::getImportedModules() const {
-  if (!DbgNode || DbgNode->getNumOperands() < 13)
-    return DIArray();
-
-  if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(11)))
-    return DIArray(N);
-  return DIArray();
-}
-
 /// fixupObjcLikeName - Replace contains special characters used
 /// in a typical Objective-C names with '.' in a given string.
 static void fixupObjcLikeName(StringRef Str, SmallVectorImpl<char> &Out) {

llvm/test/CodeGen/ARM/2010-08-04-StackVariable.ll

@@ -79,7 +79,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 !0 = metadata !{i32 786478, metadata !1, metadata !"SVal", metadata !"SVal", metadata !"", metadata !2, i32 11, metadata !14, i1 false, i1 false, i32 0, i32 0, null, i1 false, i1 false, null} ; [ DW_TAG_subprogram ]
 !1 = metadata !{i32 786451, metadata !2, metadata !"SVal", metadata !2, i32 1, i64 128, i64 64, i64 0, i32 0, null, metadata !4, i32 0, null} ; [ DW_TAG_structure_type ]
 !2 = metadata !{i32 786473, metadata !48} ; [ DW_TAG_file_type ]
-!3 = metadata !{i32 786449, i32 4, metadata !2, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 false, metadata !"", i32 0, metadata !47, metadata !47, metadata !46, metadata !47,  metadata !47, metadata !""} ; [ DW_TAG_compile_unit ]
+!3 = metadata !{i32 786449, i32 4, metadata !2, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 false, metadata !"", i32 0, metadata !47, metadata !47, metadata !46, metadata !47, metadata !""} ; [ DW_TAG_compile_unit ]
 !4 = metadata !{metadata !5, metadata !7, metadata !0, metadata !9}
 !5 = metadata !{i32 786445, metadata !1, metadata !"Data", metadata !2, i32 7, i64 64, i64 64, i64 0, i32 0, metadata !6} ; [ DW_TAG_member ]
 !6 = metadata !{i32 786447, metadata !2, metadata !"", metadata !2, i32 0, i64 64, i64 64, i64 0, i32 0, null} ; [ DW_TAG_pointer_type ]

llvm/test/CodeGen/ARM/2011-01-19-MergedGlobalDbg.ll

@@ -79,7 +79,7 @@ entry:
 
 !0 = metadata !{i32 786478, metadata !1, metadata !"get1", metadata !"get1", metadata !"get1", metadata !1, i32 4, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i8 (i8)* @get1, null, null, metadata !42, i32 4} ; [ DW_TAG_subprogram ]
 !1 = metadata !{i32 786473, metadata !47} ; [ DW_TAG_file_type ]
-!2 = metadata !{i32 786449, metadata !47, i32 1, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2369.8)", i1 true, metadata !"", i32 0, null, null, metadata !40, metadata !41,  metadata !41, metadata !""} ; [ DW_TAG_compile_unit ]
+!2 = metadata !{i32 786449, metadata !47, i32 1, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2369.8)", i1 true, metadata !"", i32 0, null, null, metadata !40, metadata !41, metadata !""} ; [ DW_TAG_compile_unit ]
 !3 = metadata !{i32 786453, metadata !1, metadata !1, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !4, i32 0, null} ; [ DW_TAG_subroutine_type ]
 !4 = metadata !{metadata !5, metadata !5}
 !5 = metadata !{i32 786468, metadata !1, metadata !1, metadata !"_Bool", i32 0, i64 8, i64 8, i64 0, i32 0, i32 2} ; [ DW_TAG_base_type ]

llvm/test/CodeGen/ARM/2011-08-02-MergedGlobalDbg.ll

@@ -74,7 +74,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 
 !llvm.dbg.cu = !{!0}
 
-!0 = metadata !{i32 786449, metadata !47, i32 12, metadata !"clang", i1 true, metadata !"", i32 0, null, null, metadata !40, metadata !41,  metadata !41, null} ; [ DW_TAG_compile_unit ]
+!0 = metadata !{i32 786449, metadata !47, i32 12, metadata !"clang", i1 true, metadata !"", i32 0, null, null, metadata !40, metadata !41, null} ; [ DW_TAG_compile_unit ]
 !1 = metadata !{i32 786478, metadata !2, metadata !"get1", metadata !"get1", metadata !"", metadata !2, i32 5, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 true, i32 (i32)* @get1, null, null, metadata !42, i32 5} ; [ DW_TAG_subprogram ]
 !2 = metadata !{i32 786473, metadata !47} ; [ DW_TAG_file_type ]
 !3 = metadata !{i32 786453, metadata !2, metadata !2, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]

llvm/test/CodeGen/ARM/debug-info-arg.ll

@@ -31,7 +31,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 
 !llvm.dbg.cu = !{!0}
 
-!0 = metadata !{i32 786449, metadata !32, i32 12, metadata !"Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn)", i1 true, metadata !"", i32 0, null, null, metadata !30, null,  null, null} ; [ DW_TAG_compile_unit ]
+!0 = metadata !{i32 786449, metadata !32, i32 12, metadata !"Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn)", i1 true, metadata !"", i32 0, null, null, metadata !30, null, null} ; [ DW_TAG_compile_unit ]
 !1 = metadata !{i32 786478, metadata !2, metadata !2, metadata !"foo", metadata !"foo", metadata !"", i32 11, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 true, void (%struct.tag_s*, %struct.tag_s*, i64, i64, %struct.tag_s*, %struct.tag_s*)* @foo, null, null, metadata !31, i32 11} ; [ DW_TAG_subprogram ]
 !2 = metadata !{i32 786473, metadata !32} ; [ DW_TAG_file_type ]
 !3 = metadata !{i32 786453, metadata !32, metadata !2, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]

llvm/test/CodeGen/ARM/debug-info-branch-folding.ll

@@ -40,7 +40,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 
 !0 = metadata !{i32 786478, i32 0, metadata !1, metadata !"test0001", metadata !"test0001", metadata !"", metadata !1, i32 3, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 true, <4 x float> (float)* @test0001, null, null, metadata !51, i32 0} ; [ DW_TAG_subprogram ]
 !1 = metadata !{i32 786473, metadata !54} ; [ DW_TAG_file_type ]
-!2 = metadata !{i32 786449, metadata !54, i32 12, metadata !"clang version 3.0 (trunk 129915)", i1 true, metadata !"", i32 0, null, null, metadata !50, null,  null, null} ; [ DW_TAG_compile_unit ]
+!2 = metadata !{i32 786449, metadata !54, i32 12, metadata !"clang version 3.0 (trunk 129915)", i1 true, metadata !"", i32 0, null, null, metadata !50, null, null} ; [ DW_TAG_compile_unit ]
 !3 = metadata !{i32 786453, metadata !54, metadata !1, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
 !4 = metadata !{metadata !5}
 !5 = metadata !{i32 786454, metadata !54, metadata !2, metadata !"v4f32", i32 14, i64 0, i64 0, i64 0, i32 0, metadata !6} ; [ DW_TAG_typedef ]

llvm/test/CodeGen/ARM/debug-info-d16-reg.ll

@@ -60,7 +60,7 @@ declare i32 @puts(i8* nocapture) nounwind
 
 !0 = metadata !{i32 786478, metadata !1, metadata !"printer", metadata !"printer", metadata !"printer", metadata !1, i32 12, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 (i8*, double, i8)* @printer, null, null, metadata !43, i32 12} ; [ DW_TAG_subprogram ]
 !1 = metadata !{i32 786473, metadata !46} ; [ DW_TAG_file_type ]
-!2 = metadata !{i32 786449, i32 1, metadata !1, metadata !"(LLVM build 00)", i1 true, metadata !"", i32 0, null, null, metadata !42, null,  null, metadata !""} ; [ DW_TAG_compile_unit ]
+!2 = metadata !{i32 786449, i32 1, metadata !1, metadata !"(LLVM build 00)", i1 true, metadata !"", i32 0, null, null, metadata !42, null, metadata !""} ; [ DW_TAG_compile_unit ]
 !3 = metadata !{i32 786453, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !4, i32 0, null} ; [ DW_TAG_subroutine_type ]
 !4 = metadata !{metadata !5, metadata !6, metadata !7, metadata !8}
 !5 = metadata !{i32 786468, metadata !1, metadata !"int", metadata !1, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]

llvm/test/CodeGen/ARM/debug-info-qreg.ll

@@ -39,7 +39,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 
 !0 = metadata !{i32 786478, metadata !1, metadata !"test0001", metadata !"test0001", metadata !"", metadata !1, i32 3, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 true, <4 x float> (float)* @test0001, null, null, metadata !51, i32 3} ; [ DW_TAG_subprogram ]
 !1 = metadata !{i32 786473, metadata !54} ; [ DW_TAG_file_type ]
-!2 = metadata !{i32 786449, metadata !54, i32 12, metadata !"clang version 3.0 (trunk 129915)", i1 true, metadata !"", i32 0, null, null, metadata !50, null,  null, null} ; [ DW_TAG_compile_unit ]
+!2 = metadata !{i32 786449, metadata !54, i32 12, metadata !"clang version 3.0 (trunk 129915)", i1 true, metadata !"", i32 0, null, null, metadata !50, null, null} ; [ DW_TAG_compile_unit ]
 !3 = metadata !{i32 786453, metadata !54, metadata !1, metadata !"", i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
 !4 = metadata !{metadata !5}
 !5 = metadata !{i32 786454, metadata !54, metadata !2, metadata !"v4f32", i32 14, i64 0, i64 0, i64 0, i32 0, metadata !6} ; [ DW_TAG_typedef ]

llvm/test/CodeGen/ARM/debug-info-s16-reg.ll

@@ -65,7 +65,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 
 !0 = metadata !{i32 786478, metadata !1, metadata !"inlineprinter", metadata !"inlineprinter", metadata !"", metadata !1, i32 5, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 256, i1 true, i32 (i8*, float, i8)* @inlineprinter, null, null, metadata !48, i32 5} ; [ DW_TAG_subprogram ]
 !1 = metadata !{i32 786473, metadata !51} ; [ DW_TAG_file_type ]
-!2 = metadata !{i32 786449, i32 12, metadata !1, metadata !"clang version 3.0 (trunk 129915)", i1 true, metadata !"", i32 0, null, null, metadata !47, null,  null, null} ; [ DW_TAG_compile_unit ]
+!2 = metadata !{i32 786449, i32 12, metadata !1, metadata !"clang version 3.0 (trunk 129915)", i1 true, metadata !"", i32 0, null, null, metadata !47, null, null} ; [ DW_TAG_compile_unit ]
 !3 = metadata !{i32 786453, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
 !4 = metadata !{metadata !5}
 !5 = metadata !{i32 786468, metadata !2, metadata !"int", null, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]