[CodeGen] Introduce generic TBAA access descriptors

With this patch we implement a concept of TBAA access descriptors
that are capable of representing both scalar and struct-path
accesses in a generic way.

This is part of D37826 reworked to be a separate patch to
simplify review.

Differential Revision: https://reviews.llvm.org/D38456

llvm-svn: 314780

1 files changed, 2 insertions, 5 deletions

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index ec122b795ce..a16f350f9d5 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -23,7 +23,6 @@
 #include "CGOpenMPRuntimeNVPTX.h"
 #include "CodeGenFunction.h"
 #include "CodeGenPGO.h"
-#include "CodeGenTBAA.h"
 #include "ConstantEmitter.h"
 #include "CoverageMappingGen.h"
 #include "TargetInfo.h"
@@ -591,12 +590,10 @@ llvm::MDNode *CodeGenModule::getTBAAStructInfo(QualType QTy) {
   return TBAA->getTBAAStructInfo(QTy);
 }
 
-llvm::MDNode *CodeGenModule::getTBAAStructTagInfo(QualType BaseTy,
-                                                  llvm::MDNode *AccessN,
-                                                  uint64_t O) {
+llvm::MDNode *CodeGenModule::getTBAAStructTagInfo(TBAAAccessInfo Info) {
   if (!TBAA)
     return nullptr;
-  return TBAA->getTBAAStructTagInfo(BaseTy, AccessN, O);
+  return TBAA->getTBAAStructTagInfo(Info);
 }
 
 llvm::MDNode *CodeGenModule::getTBAAMayAliasTypeInfo() {