Revert "PR14606: debug info imported_module support"

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179840 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 6 insertions, 48 deletions

diff --git a/lib/IR/DIBuilder.cpp b/lib/IR/DIBuilder.cpp
index 2e981a5..9d6e840 100644
--- a/lib/IR/DIBuilder.cpp
+++ b/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) {
diff --git a/lib/IR/DebugInfo.cpp b/lib/IR/DebugInfo.cpp
index ec83dca..10beb69 100644
--- a/lib/IR/DebugInfo.cpp
+++ b/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)))
@@ -734,7 +722,7 @@ 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)))
@@ -742,15 +730,6 @@ DIArray DICompileUnit::getGlobalVariables() const {
   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) {