[all-commits] [llvm/llvm-project] 509854: [clang] Replace asm with __asm__ in cuda header

[Jon Chesterfield via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 509854b69cea0c9261ac21ceb22012a53e7a800b
      https://github.com/llvm/llvm-project/commit/509854b69cea0c9261ac21ceb22012a53e7a800b
  Author: Jon Chesterfield <jonathanchesterfield at gmail.com>
  Date:   2021-08-05 (Thu, 05 Aug 2021)

  Changed paths:
    M clang/lib/Headers/__clang_cuda_device_functions.h

  Log Message:
  -----------
  [clang] Replace asm with __asm__ in cuda header

Asm is a gnu extension for C, so at present -fopenmp -std=c99
and similar fail to compile on nvptx, bug 51344

Changing to `__asm__` or `__asm` works for openmp, all three appear to work
for cuda. Suggesting `__asm__` here as `__asm` is used by MSVC with different
syntax, so this should make for better error diagnostics if the header is
passed to a compiler other than clang.

Reviewed By: tra, emankov

Differential Revision: https://reviews.llvm.org/D107492