src/__support/common.h.def

//===-- Common internal contructs -----------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIBC_SUPPORT_COMMON_H
#define LLVM_LIBC_SUPPORT_COMMON_H

#define LIBC_INLINE_ASM __asm__ __volatile__

#define likely(x) __builtin_expect (!!(x), 1)
#define unlikely(x) __builtin_expect (x, 0)
#define UNUSED __attribute__((unused))

#ifndef LLVM_LIBC_FUNCTION_ATTR
  #define LLVM_LIBC_FUNCTION_ATTR
#endif

#ifdef LLVM_LIBC_PUBLIC_PACKAGING
#define LLVM_LIBC_FUNCTION(type, name, arglist) \
  type name arglist; \
  LLVM_LIBC_FUNCTION_ATTR decltype(__llvm_libc::name) __##name##_impl__ __asm__(#name); \
  decltype(__llvm_libc::name) name [[gnu::alias(#name)]]; \
  type __##name##_impl__ arglist                                        
#else
#define LLVM_LIBC_FUNCTION(type, name, arglist)\
  type name arglist
#endif

#endif // LLVM_LIBC_SUPPORT_COMMON_H