Add support to create class type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121279 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/Analysis/DIBuilder.h b/include/llvm/Analysis/DIBuilder.h
index 50382c2..0140f93 100644
--- a/include/llvm/Analysis/DIBuilder.h
+++ b/include/llvm/Analysis/DIBuilder.h
@@ -142,6 +142,26 @@
uint64_t AlignInBits, uint64_t OffsetInBits,
unsigned Flags, DIType Ty);
+ /// CreateClassType - Create debugging information entry for a class.
+ /// @param Scope Scope in which this class is defined.
+ /// @param Name class name.
+ /// @param File File where this member is defined.
+ /// @param LineNo Line number.
+ /// @param SizeInBits Member size.
+ /// @param AlignInBits Member alignment.
+ /// @param OffsetInBits Member offset.
+ /// @param Flags Flags to encode member attribute, e.g. private
+ /// @param Elements class members.
+ /// @param VTableHolder Debug info of the base class that contains vtable
+ /// for this type. This is used in
+ /// DW_AT_containing_type. See DWARF documentation
+ /// for more info.
+ DIType CreateClassType(DIDescriptor Scope, StringRef Name, DIFile File,
+ unsigned LineNumber, uint64_t SizeInBits,
+ uint64_t AlignInBits, uint64_t OffsetInBits,
+ unsigned Flags, DIType DerivedFrom,
+ DIArray Elements, MDNode *VTableHolder = 0);
+
/// CreateStructType - Create debugging information entry for a struct.
/// @param Scope Scope in which this struct is defined.
/// @param Name Struct name.
@@ -149,7 +169,6 @@
/// @param LineNo Line number.
/// @param SizeInBits Member size.
/// @param AlignInBits Member alignment.
- /// @param OffsetInBits Member offset.
/// @param Flags Flags to encode member attribute, e.g. private
/// @param Elements Struct elements.
/// @param RunTimeLang Optional parameter, Objective-C runtime version.
@@ -165,7 +184,6 @@
/// @param LineNo Line number.
/// @param SizeInBits Member size.
/// @param AlignInBits Member alignment.
- /// @param OffsetInBits Member offset.
/// @param Flags Flags to encode member attribute, e.g. private
/// @param Elements Union elements.
/// @param RunTimeLang Optional parameter, Objective-C runtime version.
diff --git a/include/llvm/Analysis/DebugInfo.h b/include/llvm/Analysis/DebugInfo.h
index 5f4db24..f0effb7 100644
--- a/include/llvm/Analysis/DebugInfo.h
+++ b/include/llvm/Analysis/DebugInfo.h
@@ -288,6 +288,7 @@
/// replaceAllUsesWith - Replace all uses of debug info referenced by
/// this descriptor.
void replaceAllUsesWith(DIDescriptor &D);
+ void replaceAllUsesWith(MDNode *D);
/// print - print type.
void print(raw_ostream &OS) const;
diff --git a/lib/Analysis/DIBuilder.cpp b/lib/Analysis/DIBuilder.cpp
index c9a4229..658b377 100644
--- a/lib/Analysis/DIBuilder.cpp
+++ b/lib/Analysis/DIBuilder.cpp
@@ -236,6 +236,32 @@
return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
}
+/// CreateClassType - Create debugging information entry for a class.
+DIType DIBuilder::CreateClassType(DIDescriptor Context, StringRef Name,
+ DIFile File, unsigned LineNumber,
+ uint64_t SizeInBits, uint64_t AlignInBits,
+ uint64_t OffsetInBits, unsigned Flags,
+ DIType DerivedFrom, DIArray Elements,
+ MDNode *VTableHoder) {
+ // TAG_class_type is encoded in DICompositeType format.
+ Value *Elts[] = {
+ GetTagConstant(VMContext, dwarf::DW_TAG_class_type),
+ Context,
+ MDString::get(VMContext, Name),
+ File,
+ ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
+ ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
+ ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
+ ConstantInt::get(Type::getInt32Ty(VMContext), OffsetInBits),
+ ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
+ DerivedFrom,
+ Elements,
+ ConstantInt::get(Type::getInt32Ty(VMContext), 0),
+ VTableHoder
+ };
+ return DIType(MDNode::get(VMContext, &Elts[0], array_lengthof(Elts)));
+}
+
/// CreateStructType - Create debugging information entry for a struct.
DIType DIBuilder::CreateStructType(DIDescriptor Context, StringRef Name,
DIFile File, unsigned LineNumber,
diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index f968d06..9e802c6 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -288,6 +288,26 @@
}
}
+/// replaceAllUsesWith - Replace all uses of debug info referenced by
+/// this descriptor.
+void DIType::replaceAllUsesWith(MDNode *D) {
+ if (!DbgNode)
+ return;
+
+ // Since we use a TrackingVH for the node, its easy for clients to manufacture
+ // legitimate situations where they want to replaceAllUsesWith() on something
+ // which, due to uniquing, has merged with the source. We shield clients from
+ // this detail by allowing a value to be replaced with replaceAllUsesWith()
+ // itself.
+ if (DbgNode != D) {
+ MDNode *Node = const_cast<MDNode*>(DbgNode);
+ const MDNode *DN = D;
+ const Value *V = cast_or_null<Value>(DN);
+ Node->replaceAllUsesWith(const_cast<Value*>(V));
+ MDNode::deleteTemporary(Node);
+ }
+}
+
/// Verify - Verify that a compile unit is well formed.
bool DICompileUnit::Verify() const {
if (!DbgNode)