compiler-rt/lib/builtins/int_util.h

   1 //===-- int_util.h - internal utility functions ---------------------------===//
   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 //
   9 // This file is not part of the interface of this library.
  10 //
  11 // This file defines non-inline utilities which are available for use in the
  12 // library. The function definitions themselves are all contained in int_util.c
  13 // which will always be compiled into any compiler-rt library.
  14 //
  15 //===----------------------------------------------------------------------===//
  16
  17 #ifndef INT_UTIL_H
  18 #define INT_UTIL_H
  19
  20 /// \brief Trigger a program abort (or panic for kernel code).
  21 #define compilerrt_abort() __compilerrt_abort_impl(__FILE__, __LINE__, __func__)
  22
  23 NORETURN void __compilerrt_abort_impl(const char *file, int line,
  24                                       const char *function);
  25
  26 #define COMPILE_TIME_ASSERT(expr) COMPILE_TIME_ASSERT1(expr, __COUNTER__)
  27 #define COMPILE_TIME_ASSERT1(expr, cnt) COMPILE_TIME_ASSERT2(expr, cnt)
  28 #define COMPILE_TIME_ASSERT2(expr, cnt)                                        \
  29   typedef char ct_assert_##cnt[(expr) ? 1 : -1] UNUSED
  30
  31 // Force unrolling the code specified to be repeated N times.
  32 #define REPEAT_0_TIMES(code_to_repeat) /* do nothing */
  33 #define REPEAT_1_TIMES(code_to_repeat) code_to_repeat
  34 #define REPEAT_2_TIMES(code_to_repeat)                                         \
  35   REPEAT_1_TIMES(code_to_repeat)                                               \
  36   code_to_repeat
  37 #define REPEAT_3_TIMES(code_to_repeat)                                         \
  38   REPEAT_2_TIMES(code_to_repeat)                                               \
  39   code_to_repeat
  40 #define REPEAT_4_TIMES(code_to_repeat)                                         \
  41   REPEAT_3_TIMES(code_to_repeat)                                               \
  42   code_to_repeat
  43
  44 #define REPEAT_N_TIMES_(N, code_to_repeat) REPEAT_##N##_TIMES(code_to_repeat)
  45 #define REPEAT_N_TIMES(N, code_to_repeat) REPEAT_N_TIMES_(N, code_to_repeat)
  46
  47 #endif // INT_UTIL_H