[PATCH] D101089: [OpenCL] Document legacy atomics with generic address space

[Anastasia Stulova via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG8fb0d6df11e4: [OpenCL][Docs] Describe extension for legacy atomics with generic addr space. (authored by Anastasia).
Herald added a subscriber: ldrumm.
Herald added a project: clang.

Changed prior to commit:
  https://reviews.llvm.org/D101089?vs=339711&id=341493#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D101089/new/

https://reviews.llvm.org/D101089

Files:
  clang/docs/LanguageExtensions.rst


Index: clang/docs/LanguageExtensions.rst
===================================================================
--- clang/docs/LanguageExtensions.rst
+++ clang/docs/LanguageExtensions.rst
@@ -1813,6 +1813,23 @@
   #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
 =================
 


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