| //===-- negvsi2.c - Implement __negvsi2 -----------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements __negvsi2 for the compiler_rt library. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "int_lib.h" |
| |
| // Returns: -a |
| |
| // Effects: aborts if -a overflows |
| |
| COMPILER_RT_ABI si_int __negvsi2(si_int a) { |
| const si_int MIN = (si_int)1 << ((int)(sizeof(si_int) * CHAR_BIT) - 1); |
| if (a == MIN) |
| compilerrt_abort(); |
| return -a; |
| } |
