Author: mzolotukhin Date: Thu Sep 10 21:01:15 2015 New Revision: 247374 URL: http://llvm.org/viewvc/llvm-project?rev=247374&view=rev Log: Docs: Document __builtin_nontemporal_load and __builtin_nontemporal_store.
Summary: In r247104 I added the builtins for generating non-temporal memory operations, but now I realized that they lack documentation. This patch adds some. Differential Revision: http://reviews.llvm.org/D12785 Modified: cfe/trunk/docs/LanguageExtensions.rst Modified: cfe/trunk/docs/LanguageExtensions.rst URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/LanguageExtensions.rst?rev=247374&r1=247373&r2=247374&view=diff ============================================================================== --- cfe/trunk/docs/LanguageExtensions.rst (original) +++ cfe/trunk/docs/LanguageExtensions.rst Thu Sep 10 21:01:15 2015 @@ -1779,6 +1779,26 @@ care should be exercised. For these reasons the higher level atomic primitives should be preferred where possible. +Non-temporal load/store builtins +-------------------------------- + +Clang provides overloaded builtins allowing generation of 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 +will be used. + Non-standard C++11 Attributes ============================= _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
