[PATCH] D133341: [C++] [Coroutines] Prefer aligned (de)allocation for coroutines - implement the option2 of P2014R0

[Chuanqi Xu via Phabricator via cfe-commits]

ChuanqiXu created this revision.
ChuanqiXu added reviewers: erichkeane, ychen, rjmccall.
ChuanqiXu added projects: clang, clang-language-wg.
Herald added a project: All.
ChuanqiXu requested review of this revision.
Herald added subscribers: cfe-commits, MaskRay.

This implements the option2 of https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p2014r0.pdf.

This also fixes https://github.com/llvm/llvm-project/issues/56671.

Although wg21 didn't get consensus for the direction of the problem, we're happy to have some implementation and user experience first. And from issue56671, the option2 should be the pursued one.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D133341

Files:
  clang/docs/ClangCommandLineReference.rst
  clang/docs/ReleaseNotes.rst
  clang/include/clang/Basic/Builtins.def
  clang/include/clang/Basic/DiagnosticGroups.td
  clang/include/clang/Basic/DiagnosticSemaKinds.td
  clang/include/clang/Basic/LangOptions.def
  clang/include/clang/Driver/Options.td
  clang/include/clang/Sema/Sema.h
  clang/lib/CodeGen/CGBuiltin.cpp
  clang/lib/CodeGen/CGCoroutine.cpp
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/lib/Sema/SemaCoroutine.cpp
  clang/lib/Sema/SemaExprCXX.cpp
  clang/test/CodeGenCoroutines/coro-aligned-alloc-2.cpp
  clang/test/CodeGenCoroutines/coro-aligned-alloc.cpp
  clang/test/SemaCXX/coroutine-alloc-4.cpp

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