Move name mangling support from CodeGen to AST. In the

process, perform a number of refactorings:

- Move MiscNameMangler member functions to MangleContext
- Remove GlobalDecl dependency from MangleContext
- Make MangleContext abstract and move Itanium/Microsoft functionality
  to their own classes/files
- Implement ASTContext::createMangleContext and have CodeGen use it

No (intended) functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123386 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 3 deletions

diff --git a/lib/CodeGen/CGCXXABI.h b/lib/CodeGen/CGCXXABI.h
index 56c4ea98ae..8bc1385d7f 100644
--- a/lib/CodeGen/CGCXXABI.h
+++ b/lib/CodeGen/CGCXXABI.h
@@ -32,18 +32,20 @@ namespace clang {
   class CXXMethodDecl;
   class CXXRecordDecl;
   class FieldDecl;
+  class MangleContext;
 
 namespace CodeGen {
   class CodeGenFunction;
   class CodeGenModule;
-  class MangleContext;
 
 /// Implements C++ ABI-specific code generation functions.
 class CGCXXABI {
 protected:
   CodeGenModule &CGM;
+  llvm::OwningPtr<MangleContext> MangleCtx;
 
-  CGCXXABI(CodeGenModule &CGM) : CGM(CGM) {}
+  CGCXXABI(CodeGenModule &CGM)
+    : CGM(CGM), MangleCtx(CGM.getContext().createMangleContext()) {}
 
 protected:
   ImplicitParamDecl *&getThisDecl(CodeGenFunction &CGF) {
@@ -74,7 +76,9 @@ public:
   virtual ~CGCXXABI();
 
   /// Gets the mangle context.
-  virtual MangleContext &getMangleContext() = 0;
+  MangleContext &getMangleContext() {
+    return *MangleCtx;
+  }
 
   /// Find the LLVM type used to represent the given member pointer
   /// type.