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Diffstat (limited to 'clang/docs/LanguageExtensions.rst')
| -rw-r--r-- | clang/docs/LanguageExtensions.rst | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/clang/docs/LanguageExtensions.rst b/clang/docs/LanguageExtensions.rst index f448a9a..34e1bf1 100644 --- a/clang/docs/LanguageExtensions.rst +++ b/clang/docs/LanguageExtensions.rst @@ -138,7 +138,7 @@ for support for non-standardized features, i.e. features not prefixed ``c_``, ``cxx_`` or ``objc_``. Another use of ``__has_feature`` is to check for compiler features not related -to the language standard, such as e.g. :doc:`AddressSanitizer +to the language standard, such as :doc:`AddressSanitizer <AddressSanitizer>`. If the ``-pedantic-errors`` option is given, ``__has_extension`` is equivalent @@ -377,8 +377,8 @@ Builtin Macros ``__FILE_NAME__`` Clang-specific extension that functions similar to ``__FILE__`` but only - renders the last path component (the filename) instead of an invocation - dependent full path to that file. + renders the last path component (the filename) instead of an + invocation-dependent full path to that file. ``__COUNTER__`` Defined to an integer value that starts at zero and is incremented each time @@ -716,7 +716,7 @@ See also :ref:`langext-__builtin_shufflevector`, :ref:`langext-__builtin_convert a NEON vector or an SVE vector, it's only available in C++ and uses normal bool conversions (that is, != 0). If it's an extension (OpenCL) vector, it's only available in C and OpenCL C. - And it selects base on signedness of the condition operands (OpenCL v1.1 s6.3.9). + And it selects based on signedness of the condition operands (OpenCL v1.1 s6.3.9). .. [#] sizeof can only be used on vector length specific SVE types. .. [#] Clang does not allow the address of an element to be taken while GCC allows this. This is intentional for vectors with a boolean element type and @@ -848,6 +848,14 @@ of different sizes and signs is forbidden in binary and ternary builtins. semantics, see `LangRef <http://llvm.org/docs/LangRef.html#llvm-min-intrinsics-comparation>`_ for the comparison. + T __builtin_elementwise_maximumnum(T x, T y) return x or y, whichever is larger. Follows IEEE 754-2019 floating point types + semantics, see `LangRef + <http://llvm.org/docs/LangRef.html#llvm-min-intrinsics-comparation>`_ + for the comparison. + T __builtin_elementwise_minimumnum(T x, T y) return x or y, whichever is smaller. Follows IEEE 754-2019 floating point types + semantics, see `LangRef + <http://llvm.org/docs/LangRef.html#llvm-min-intrinsics-comparation>`_ + for the comparison. ============================================== ====================================================================== ========================================= @@ -857,7 +865,7 @@ Each builtin returns a scalar equivalent to applying the specified operation(x, y) as recursive even-odd pairwise reduction to all vector elements. ``operation(x, y)`` is repeatedly applied to each non-overlapping even-odd element pair with indices ``i * 2`` and ``i * 2 + 1`` with -``i in [0, Number of elements / 2)``. If the numbers of elements is not a +``i in [0, Number of elements / 2)``. If the number of elements is not a power of 2, the vector is widened with neutral elements for the reduction at the end to the next power of 2. @@ -1491,7 +1499,7 @@ C++14 digit separators Use ``__cpp_digit_separators`` to determine if support for digit separators using single quotes (for instance, ``10'000``) is enabled. At this time, there -is no corresponding ``__has_feature`` name +is no corresponding ``__has_feature`` name. C++14 generalized lambda capture ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -1545,7 +1553,7 @@ C++ type aware allocators ^^^^^^^^^^^^^^^^^^^^^^^^^ Use ``__has_extension(cxx_type_aware_allocators)`` to determine the existence of -support for the future C++2d type aware allocator feature. For full details see +support for the future C++2d type aware allocator feature. For full details, see :doc:`C++ Type Aware Allocators <CXXTypeAwareAllocators>` for additional details. C11 @@ -1643,7 +1651,7 @@ Modules Use ``__has_feature(modules)`` to determine if Modules have been enabled. For example, compiling code with ``-fmodules`` enables the use of Modules. -More information could be found `here <https://clang.llvm.org/docs/Modules.html>`_. +More information can be found `here <https://clang.llvm.org/docs/Modules.html>`_. Language Extensions Back-ported to Previous Standards ===================================================== @@ -1878,7 +1886,7 @@ The following type trait primitives are supported by Clang. Those traits marked C++26 relocatable types, and types which were made trivially relocatable via the ``clang::trivial_abi`` attribute. This trait is deprecated and should be replaced by - ``__builtin_is_cpp_trivially_relocatable``. Note however that it is generally + ``__builtin_is_cpp_trivially_relocatable``. Note, however, that it is generally unsafe to relocate a C++-relocatable type with ``memcpy`` or ``memmove``; use ``__builtin_trivially_relocate``. * ``__builtin_is_cpp_trivially_relocatable`` (C++): Returns true if an object |