[all-commits] [llvm/llvm-project] 2d1d07: [CUDA][HIP] Use the same default language std as C++

[Yaxun (Sam) Liu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2d1d07152bd26b001dedec3400b4b01d3bb11622
      https://github.com/llvm/llvm-project/commit/2d1d07152bd26b001dedec3400b4b01d3bb11622
  Author: Yaxun (Sam) Liu <yaxun.liu at amd.com>
  Date:   2023-07-19 (Wed, 19 Jul 2023)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/Basic/LangStandards.def
    M clang/lib/Basic/LangStandards.cpp
    M clang/test/CodeGenCUDA/long-double.cu
    M clang/test/Driver/unknown-std.cpp
    M clang/test/Preprocessor/lang-std.cpp

  Log Message:
  -----------
  [CUDA][HIP] Use the same default language std as C++

Currently CUDA/HIP defines their own language standards in
LanguageStandards.def but they are redundant. They are the same as stdc++14.
The fact that CUDA/HIP uses c++* in option -std= indicates that they have the
same language standards as C++. The CUDA/HIP specific language features are
conveyed through language options, not language standards features. It makes
sense to let CUDA/HIP uses the same default language standard as C++.

Reviewed by: Siu Chi Chan, Artem Belevich

Differential Revision: https://reviews.llvm.org/D155539

Fixes: SWDEV-407685