[PATCH] D12785: Document __builtin_nontemporal_load and __builtin_nontemporal_store.

[Michael Zolotukhin via cfe-commits]

mzolotukhin updated this revision to Diff 34521.
mzolotukhin added a comment.

- Remove paragraph about changing program behavior (since we shouldn't change it anyway).


http://reviews.llvm.org/D12785

Files:
  docs/LanguageExtensions.rst

Index: docs/LanguageExtensions.rst
===================================================================
--- docs/LanguageExtensions.rst
+++ docs/LanguageExtensions.rst
@@ -1778,6 +1778,26 @@
 For these reasons the higher level atomic primitives should be preferred where
 possible.
 
+Non-temporal load/store builtins
+--------------------------------
+
+Clang provides overloaded builtins allowing to generate non-temporal memory
+accesses.
+
+.. code-block:: c
+
+  T __builtin_nontemporal_load(T *addr);
+  void __builtin_nontemporal_store(T value, T *addr);
+
+The types ``T`` currently supported are:
+
+* Integer types.
+* Floating-point types.
+* Vector types.
+
+Note that the compiler does not guarantee that non-temporal loads or stores
+would be used.
+
 Non-standard C++11 Attributes
 =============================
 


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