Author: Anastasia Stulova Date: 2021-04-29T14:02:34+01:00 New Revision: 8fb0d6df11e4d2b4a534c96fcc1b55459940151e
URL: https://github.com/llvm/llvm-project/commit/8fb0d6df11e4d2b4a534c96fcc1b55459940151e DIFF: https://github.com/llvm/llvm-project/commit/8fb0d6df11e4d2b4a534c96fcc1b55459940151e.diff LOG: [OpenCL][Docs] Describe extension for legacy atomics with generic addr space. This extension is primarily targeting SPIR-V compilations flow as the IR translation is the same between 1.x and 2.x atomics. Differential Revision: https://reviews.llvm.org/D101089 Added: Modified: clang/docs/LanguageExtensions.rst Removed: ################################################################################ diff --git a/clang/docs/LanguageExtensions.rst b/clang/docs/LanguageExtensions.rst index 00759113775d4..5e5382879e0c8 100644 --- a/clang/docs/LanguageExtensions.rst +++ b/clang/docs/LanguageExtensions.rst @@ -1813,6 +1813,23 @@ supporting the variadic arguments e.g. majority of CPU targets. #pragma OPENCL EXTENSION __cl_clang_variadic_functions : disable void bar(int a, ...); // error - variadic prototype is not allowed +Legacy 1.x atomics with generic address space +--------------------------------------------- + +Clang allows use of atomic functions from the OpenCL 1.x standards +with the generic address space pointer in C++ for OpenCL mode. + +This is a non-portable feature and might not be supported by all +targets. + +**Example of Use**: + +.. code-block:: c++ + + void foo(__generic volatile unsigned int* a) { + atomic_add(a, 1); + } + Builtin Functions ================= _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
