[clang-repl] [codegen] Reduce the state in TBAA. NFC for static compilation. (#98138)

In incremental compilation clang works with multiple `llvm::Module`s.
Our current approach is to create a CodeGenModule entity for every new
module request (via StartModule). However, some of the state such as the
mangle context needs to be preserved to keep the original semantics in
the ever-growing TU.

Fixes: llvm/llvm-project#95581.

cc: @jeaye

1 files changed, 3 insertions, 2 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.h b/clang/lib/CodeGen/CodeGenModule.h
index 284bba8..c58bb88 100644
--- a/clang/lib/CodeGen/CodeGenModule.h
+++ b/clang/lib/CodeGen/CodeGenModule.h
@@ -320,7 +320,7 @@ private:
   // This should not be moved earlier, since its initialization depends on some
   // of the previous reference members being already initialized and also checks
   // if TheTargetCodeGenInfo is NULL
-  CodeGenTypes Types;
+  std::unique_ptr<CodeGenTypes> Types;
 
   /// Holds information about C++ vtables.
   CodeGenVTables VTables;
@@ -776,6 +776,7 @@ public:
   bool supportsCOMDAT() const;
   void maybeSetTrivialComdat(const Decl &D, llvm::GlobalObject &GO);
 
+  const ABIInfo &getABIInfo();
   CGCXXABI &getCXXABI() const { return *ABI; }
   llvm::LLVMContext &getLLVMContext() { return VMContext; }
 
@@ -783,7 +784,7 @@ public:
 
   const TargetCodeGenInfo &getTargetCodeGenInfo();
 
-  CodeGenTypes &getTypes() { return Types; }
+  CodeGenTypes &getTypes() { return *Types; }
 
   CodeGenVTables &getVTables() { return VTables; }