[PATCH] D154658: Optimize emission of `dynamic_cast` to final classes.

[Richard Smith - zygoloid via Phabricator via cfe-commits]

rsmith updated this revision to Diff 539776.
rsmith marked an inline comment as done.
rsmith added a comment.
Herald added a reviewer: jdoerfert.
Herald added subscribers: jplehr, sstefan1.

- Avoid emitting the type_info when detecting whether it would be null.
- Bring back class type in GetVTablePtr and instead don't use it here.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D154658/new/

https://reviews.llvm.org/D154658

Files:
  clang/lib/AST/ExprCXX.cpp
  clang/lib/CodeGen/CGCXXABI.h
  clang/lib/CodeGen/CGExprCXX.cpp
  clang/lib/CodeGen/CodeGenModule.cpp
  clang/lib/CodeGen/CodeGenModule.h
  clang/lib/CodeGen/ItaniumCXXABI.cpp
  clang/lib/CodeGen/MicrosoftCXXABI.cpp
  clang/test/CodeGenCXX/dynamic-cast-always-null.cpp
  clang/test/CodeGenCXX/dynamic-cast-exact-disabled.cpp
  clang/test/CodeGenCXX/dynamic-cast-exact.cpp

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