libc/src/__support/macros/attributes.h

   1 //===-- Portable attributes -------------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 // This header file defines macros for declaring attributes for functions,
   9 // types, and variables.
  10 //
  11 // These macros are used within llvm-libc and allow the compiler to optimize,
  12 // where applicable, certain function calls.
  13 //
  14 // Most macros here are exposing GCC or Clang features, and are stubbed out for
  15 // other compilers.
  16
  17 #ifndef LLVM_LIBC_SUPPORT_MACROS_ATTRIBUTES_H
  18 #define LLVM_LIBC_SUPPORT_MACROS_ATTRIBUTES_H
  19
  20 #include "properties/architectures.h"
  21
  22 #define LIBC_INLINE inline
  23 #define LIBC_INLINE_VAR inline
  24 #define LIBC_INLINE_ASM __asm__ __volatile__
  25 #define LIBC_UNUSED __attribute__((unused))
  26
  27 #ifdef LIBC_TARGET_ARCH_IS_GPU
  28 #define LIBC_THREAD_LOCAL
  29 #else
  30 #define LIBC_THREAD_LOCAL thread_local
  31 #endif
  32
  33 #endif // LLVM_LIBC_SUPPORT_MACROS_ATTRIBUTES_H