41 lines
845 B
C
41 lines
845 B
C
/* ===-- addvti3.c - Implement __addvti3 -----------------------------------===
|
|
*
|
|
* 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 __addvti3 for the compiler_rt library.
|
|
*
|
|
* ===----------------------------------------------------------------------===
|
|
*/
|
|
|
|
#include "int_lib.h"
|
|
|
|
#if __x86_64
|
|
|
|
/* Returns: a + b */
|
|
|
|
/* Effects: aborts if a + b overflows */
|
|
|
|
ti_int
|
|
__addvti3(ti_int a, ti_int b)
|
|
{
|
|
ti_int s = a + b;
|
|
if (b >= 0)
|
|
{
|
|
if (s < a)
|
|
compilerrt_abort();
|
|
}
|
|
else
|
|
{
|
|
if (s >= a)
|
|
compilerrt_abort();
|
|
}
|
|
return s;
|
|
}
|
|
|
|
#endif
|