1214152Sed/* ===-- addvti3.c - Implement __addvti3 -----------------------------------=== 2214152Sed * 3214152Sed * The LLVM Compiler Infrastructure 4214152Sed * 5222656Sed * This file is dual licensed under the MIT and the University of Illinois Open 6222656Sed * Source Licenses. See LICENSE.TXT for details. 7214152Sed * 8214152Sed * ===----------------------------------------------------------------------=== 9214152Sed * 10214152Sed * This file implements __addvti3 for the compiler_rt library. 11214152Sed * 12214152Sed * ===----------------------------------------------------------------------=== 13214152Sed */ 14214152Sed 15263560Sdim#include "int_lib.h" 16263560Sdim 17263764Sdim#ifdef CRT_HAS_128BIT 18214152Sed 19214152Sed/* Returns: a + b */ 20214152Sed 21214152Sed/* Effects: aborts if a + b overflows */ 22214152Sed 23214152Sedti_int 24214152Sed__addvti3(ti_int a, ti_int b) 25214152Sed{ 26214152Sed ti_int s = a + b; 27214152Sed if (b >= 0) 28214152Sed { 29214152Sed if (s < a) 30214152Sed compilerrt_abort(); 31214152Sed } 32214152Sed else 33214152Sed { 34214152Sed if (s >= a) 35214152Sed compilerrt_abort(); 36214152Sed } 37214152Sed return s; 38214152Sed} 39214152Sed 40263764Sdim#endif /* CRT_HAS_128BIT */ 41