[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, 9 insertions, 6 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 0d3b896..42742ae 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -341,10 +341,11 @@ CodeGenModule::CodeGenModule(ASTContext &C,
     : Context(C), LangOpts(C.getLangOpts()), FS(FS), HeaderSearchOpts(HSO),
       PreprocessorOpts(PPO), CodeGenOpts(CGO), TheModule(M), Diags(diags),
       Target(C.getTargetInfo()), ABI(createCXXABI(*this)),
-      VMContext(M.getContext()), Types(*this), VTables(*this),
+      VMContext(M.getContext()), VTables(*this),
       SanitizerMD(new SanitizerMetadata(*this)) {
 
   // Initialize the type cache.
+  Types.reset(new CodeGenTypes(*this));
   llvm::LLVMContext &LLVMContext = M.getContext();
   VoidTy = llvm::Type::getVoidTy(LLVMContext);
   Int8Ty = llvm::Type::getInt8Ty(LLVMContext);
@@ -403,7 +404,7 @@ CodeGenModule::CodeGenModule(ASTContext &C,
   if (LangOpts.Sanitize.has(SanitizerKind::Thread) ||
       (!CodeGenOpts.RelaxedAliasing && CodeGenOpts.OptimizationLevel > 0))
     TBAA.reset(new CodeGenTBAA(Context, getTypes(), TheModule, CodeGenOpts,
-                               getLangOpts(), getCXXABI().getMangleContext()));
+                               getLangOpts()));
 
   // If debug info or coverage generation is enabled, create the CGDebugInfo
   // object.
@@ -1465,12 +1466,12 @@ void CodeGenModule::EmitBackendOptionsMetadata(
 
 void CodeGenModule::UpdateCompletedType(const TagDecl *TD) {
   // Make sure that this type is translated.
-  Types.UpdateCompletedType(TD);
+  getTypes().UpdateCompletedType(TD);
 }
 
 void CodeGenModule::RefreshTypeCacheForClass(const CXXRecordDecl *RD) {
   // Make sure that this type is translated.
-  Types.RefreshTypeCacheForClass(RD);
+  getTypes().RefreshTypeCacheForClass(RD);
 }
 
 llvm::MDNode *CodeGenModule::getTBAATypeInfo(QualType QTy) {
@@ -5405,6 +5406,10 @@ void CodeGenModule::maybeSetTrivialComdat(const Decl &D,
   GO.setComdat(TheModule.getOrInsertComdat(GO.getName()));
 }
 
+const ABIInfo &CodeGenModule::getABIInfo() {
+  return getTargetCodeGenInfo().getABIInfo();
+}
+
 /// Pass IsTentative as true if you want to create a tentative definition.
 void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D,
                                             bool IsTentative) {
@@ -7813,7 +7818,5 @@ void CodeGenModule::moveLazyEmissionStates(CodeGenModule *NewBuilder) {
 
   NewBuilder->WeakRefReferences = std::move(WeakRefReferences);
 
-  NewBuilder->TBAA = std::move(TBAA);
-
   NewBuilder->ABI->MangleCtx = std::move(ABI->MangleCtx);
 }