blob: ba220f548096a787fef51c876ff4f4bfc0e62d9f (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
/* ===-- 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.
*
* ===----------------------------------------------------------------------===
*/
#if __x86_64
#include "int_lib.h"
#include <stdlib.h>
/* 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
|
