[PATCH] D37826: Refine generation of TBAA information in clang

[Ivan A. Kosarev via Phabricator via cfe-commits]

kosarev updated this revision to Diff 117653.
kosarev added a comment.

Rebased.

This is how how the rebased patch differs from the mainline:

- It incorporates changes from (not landed yet) https://reviews.llvm.org/D38503.
- Simplifies generation of TBAA info in EmitLValueForField().
- Replaces TBAAPathTag with TBAAAccessInfo for caching purposes.
- Decorated atomic accesses with complete TBAA info and not just final access types (propagation of TBAA info for atomic accesses is already fixed in https://reviews.llvm.org/D38460).
- Fixes the bug with writing to a wrong cache in getTBAAStructTypeInfo() / getBaseTypeInfo().


https://reviews.llvm.org/D37826

Files:
  lib/CodeGen/CGAtomic.cpp
  lib/CodeGen/CGClass.cpp
  lib/CodeGen/CGExpr.cpp
  lib/CodeGen/CGValue.h
  lib/CodeGen/CodeGenFunction.cpp
  lib/CodeGen/CodeGenFunction.h
  lib/CodeGen/CodeGenModule.cpp
  lib/CodeGen/CodeGenModule.h
  lib/CodeGen/CodeGenTBAA.cpp
  lib/CodeGen/CodeGenTBAA.h

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