r315705 - [CodeGen] EmitLoadOfReference() to generate TBAA info along with LValue base info

[Ivan A. Kosarev via cfe-commits]

Author: kosarev
Date: Fri Oct 13 09:50:50 2017
New Revision: 315705

URL: http://llvm.org/viewvc/llvm-project?rev=315705&view=rev
Log:
[CodeGen] EmitLoadOfReference() to generate TBAA info along with LValue base info

This patch should not bring in any functional changes.

Differential Revision: https://reviews.llvm.org/D38793

Modified:
    cfe/trunk/lib/CodeGen/CGExpr.cpp
    cfe/trunk/lib/CodeGen/CodeGenFunction.h

Modified: cfe/trunk/lib/CodeGen/CGExpr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExpr.cpp?rev=315705&r1=315704&r2=315705&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGExpr.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGExpr.cpp Fri Oct 13 09:50:50 2017
@@ -2149,7 +2149,11 @@ static LValue EmitThreadPrivateVarDeclLV
 
 Address CodeGenFunction::EmitLoadOfReference(Address Addr,
                                              const ReferenceType *RefTy,
-                                             LValueBaseInfo *BaseInfo) {
+                                             LValueBaseInfo *BaseInfo,
+                                             TBAAAccessInfo *TBAAInfo) {
+  if (TBAAInfo)
+    *TBAAInfo = CGM.getTBAAAccessInfo(RefTy->getPointeeType());
+
   llvm::Value *Ptr = Builder.CreateLoad(Addr);
   return Address(Ptr, getNaturalTypeAlignment(RefTy->getPointeeType(),
                                               BaseInfo, /*forPointee*/ true));
@@ -2158,9 +2162,9 @@ Address CodeGenFunction::EmitLoadOfRefer
 LValue CodeGenFunction::EmitLoadOfReferenceLValue(Address RefAddr,
                                                   const ReferenceType *RefTy) {
   LValueBaseInfo BaseInfo;
-  Address Addr = EmitLoadOfReference(RefAddr, RefTy, &BaseInfo);
-  return MakeAddrLValue(Addr, RefTy->getPointeeType(), BaseInfo,
-                        CGM.getTBAAAccessInfo(RefTy->getPointeeType()));
+  TBAAAccessInfo TBAAInfo;
+  Address Addr = EmitLoadOfReference(RefAddr, RefTy, &BaseInfo, &TBAAInfo);
+  return MakeAddrLValue(Addr, RefTy->getPointeeType(), BaseInfo, TBAAInfo);
 }
 
 Address CodeGenFunction::EmitLoadOfPointer(Address Ptr,

Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenFunction.h?rev=315705&r1=315704&r2=315705&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CodeGenFunction.h (original)
+++ cfe/trunk/lib/CodeGen/CodeGenFunction.h Fri Oct 13 09:50:50 2017
@@ -1944,7 +1944,8 @@ public:
                                            LValueBaseInfo *BaseInfo = nullptr);
 
   Address EmitLoadOfReference(Address Ref, const ReferenceType *RefTy,
-                              LValueBaseInfo *BaseInfo = nullptr);
+                              LValueBaseInfo *BaseInfo = nullptr,
+                              TBAAAccessInfo *TBAAInfo = nullptr);
   LValue EmitLoadOfReferenceLValue(Address Ref, const ReferenceType *RefTy);
 
   Address EmitLoadOfPointer(Address Ptr, const PointerType *PtrTy,