[PATCH] D110281: Change __builtin_sycl_unique_stable_name to just use an Itanium mangling

[Erich Keane via Phabricator via cfe-commits]

erichkeane created this revision.
erichkeane added reviewers: aaron.ballman, rjmccall.
Herald added subscribers: Naghasan, Anastasia, ebevhan, mgrang, yaxunl.
erichkeane requested review of this revision.

After significant problems in our downstream with the previous
implementation, the SYCL standard has opted to make using macros/etc to
change kernel-naming-lambdas in any way UB (even passively). As a
result, we are able to just emit the itanium mangling.

However, this DOES require a little work in the CXXABI, as the microsoft
and itanium mangler use different numbering schemes for lambdas.  This
patch adds a pair of mangling contexts that use the normal 'itanium'
mangling strategy to fill in the "DeviceManglingNumber" used previously
by CUDA.


https://reviews.llvm.org/D110281

Files:
  clang/docs/LanguageExtensions.rst
  clang/include/clang/AST/ASTContext.h
  clang/include/clang/Basic/DiagnosticSemaKinds.td
  clang/include/clang/Sema/Sema.h
  clang/lib/AST/ASTContext.cpp
  clang/lib/AST/Expr.cpp
  clang/lib/AST/ExprConstant.cpp
  clang/lib/AST/ItaniumCXXABI.cpp
  clang/lib/AST/ItaniumMangle.cpp
  clang/lib/AST/MicrosoftCXXABI.cpp
  clang/lib/Sema/SemaSYCL.cpp
  clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
  clang/test/CodeGenSYCL/unique_stable_name.cpp
  clang/test/CodeGenSYCL/unique_stable_name_windows_diff.cpp
  clang/test/SemaSYCL/unique_stable_name.cpp

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