Revert 105492 & 105493 due to a testcase regression. Radar 7424645.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105511 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 19 insertions, 36 deletions

diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index e5c2e26..a7b6d2b 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -73,15 +73,6 @@ GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const {
   return 0;
 }
 
-Function *DIDescriptor::getFunctionField(unsigned Elt) const {
-  if (DbgNode == 0)
-    return 0;
-
-  if (Elt < DbgNode->getNumOperands())
-      return dyn_cast_or_null<Function>(DbgNode->getOperand(Elt));
-  return 0;
-}
-
 unsigned DIVariable::getNumAddrElements() const {
   return DbgNode->getNumOperands()-6;
 }
@@ -947,8 +938,7 @@ DISubprogram DIFactory::CreateSubprogram(DIDescriptor Context,
                                          unsigned VK, unsigned VIndex,
                                          DIType ContainingType,
                                          bool isArtificial,
-                                         bool isOptimized,
-                                         Function *Fn) {
+                                         bool isOptimized) {
 
   Value *Elts[] = {
     GetTagConstant(dwarf::DW_TAG_subprogram),
@@ -966,10 +956,9 @@ DISubprogram DIFactory::CreateSubprogram(DIDescriptor Context,
     ConstantInt::get(Type::getInt32Ty(VMContext), VIndex),
     ContainingType,
     ConstantInt::get(Type::getInt1Ty(VMContext), isArtificial),
-    ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
-    Fn
+    ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized)
   };
-  return DISubprogram(MDNode::get(VMContext, &Elts[0], 17));
+  return DISubprogram(MDNode::get(VMContext, &Elts[0], 16));
 }
 
 /// CreateSubprogramDefinition - Create new subprogram descriptor for the
@@ -990,15 +979,14 @@ DISubprogram DIFactory::CreateSubprogramDefinition(DISubprogram &SPDeclaration)
     DeclNode->getOperand(7), // LineNo
     DeclNode->getOperand(8), // Type
     DeclNode->getOperand(9), // isLocalToUnit
-    ConstantInt::get(Type::getInt1Ty(VMContext), true), // isDefinition
+    ConstantInt::get(Type::getInt1Ty(VMContext), true),
     DeclNode->getOperand(11), // Virtuality
     DeclNode->getOperand(12), // VIndex
     DeclNode->getOperand(13), // Containting Type
     DeclNode->getOperand(14), // isArtificial
-    DeclNode->getOperand(15), // isOptimized
-    DeclNode->getOperand(16)  // Function*
+    DeclNode->getOperand(15)  // isOptimized
   };
-  return DISubprogram(MDNode::get(VMContext, &Elts[0], 17));
+  return DISubprogram(MDNode::get(VMContext, &Elts[0], 16));
 }
 
 /// CreateGlobalVariable - Create a new descriptor for the specified global.
@@ -1122,6 +1110,18 @@ DILocation DIFactory::CreateLocation(unsigned LineNo, unsigned ColumnNo,
   return DILocation(MDNode::get(VMContext, &Elts[0], 4));
 }
 
+/// CreateLocation - Creates a debug info location.
+DILocation DIFactory::CreateLocation(unsigned LineNo, unsigned ColumnNo,
+                                     DIScope S, MDNode *OrigLoc) {
+ Value *Elts[] = {
+    ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
+    ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo),
+    S,
+    OrigLoc
+  };
+  return DILocation(MDNode::get(VMContext, &Elts[0], 4));
+}
+
 //===----------------------------------------------------------------------===//
 // DIFactory: Routines for inserting code into a function
 //===----------------------------------------------------------------------===//
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index e3b93fb..eca94cb 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -866,10 +866,6 @@ void DwarfDebug::addToContextOwner(DIE *Die, DIDescriptor Context) {
   } else if (Context.isNameSpace()) {
     DIE *ContextDIE = getOrCreateNameSpace(DINameSpace(Context));
     ContextDIE->addChild(Die);
-  } else if (Context.isSubprogram()) {
-    DIE *ContextDIE = createSubprogramDIE(DISubprogram(Context),
-                                          /*MakeDecl=*/false);
-    ContextDIE->addChild(Die);
   } else if (DIE *ContextDIE = getCompileUnit(Context)->getDIE(Context))
     ContextDIE->addChild(Die);
   else 
@@ -1059,10 +1055,6 @@ void DwarfDebug::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
     if (DIDescriptor(ContainingType).isCompositeType())
       addDIEEntry(&Buffer, dwarf::DW_AT_containing_type, dwarf::DW_FORM_ref4, 
                   getOrCreateTypeDIE(DIType(ContainingType)));
-    else {
-      DIDescriptor Context = CTy.getContext();
-      addToContextOwner(&Buffer, Context);
-    }
     break;
   }
   default:
@@ -1337,9 +1329,6 @@ DIE *DwarfDebug::createSubprogramDIE(const DISubprogram &SP, bool MakeDecl) {
   // DW_TAG_inlined_subroutine may refer to this DIE.
   SPCU->insertDIE(SP, SPDie);
 
-  // Add to context owner.
-  addToContextOwner(SPDie, SP.getContext());
-
   return SPDie;
 }
 
@@ -2352,14 +2341,8 @@ DbgScope *DwarfDebug::getOrCreateDbgScope(const MDNode *Scope, const MDNode *Inl
     }
 
     if (!WScope->getParent()) {
-      // The SPName check is the "old way," kept here for backwards
-      // compatibility with the existing .ll test cases in the LLVM
-      // test suite.  The debug info for some functions omits any
-      // linkage name because it confuses GDB.  Updated front-ends
-      // should include a Function * that we can check instead.
       StringRef SPName = DISubprogram(Scope).getLinkageName();
-      if ((SPName == Asm->MF->getFunction()->getName()) ||
-          (DISubprogram(Scope).getFunction() == Asm->MF->getFunction()))
+      if (SPName == Asm->MF->getFunction()->getName())
         CurrentFnDbgScope = WScope;
     }