forked from OSchip/llvm-project
31 lines
807 B
C
31 lines
807 B
C
/* ===-- negvsi2.c - Implement __negvsi2 -----------------------------------===
|
|
*
|
|
* The LLVM Compiler Infrastructure
|
|
*
|
|
* This file is dual licensed under the MIT and the University of Illinois Open
|
|
* Source Licenses. See LICENSE.TXT for details.
|
|
*
|
|
* ===----------------------------------------------------------------------===
|
|
*
|
|
* This file implements __negvsi2 for the compiler_rt library.
|
|
*
|
|
* ===----------------------------------------------------------------------===
|
|
*/
|
|
#include "abi.h"
|
|
|
|
#include "int_lib.h"
|
|
#include <stdlib.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;
|
|
}
|