10b57cec5SDimitry Andric //===-- addvdi3.c - Implement __addvdi3 -----------------------------------===// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric // 90b57cec5SDimitry Andric // This file implements __addvdi3 for the compiler_rt library. 100b57cec5SDimitry Andric // 110b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 120b57cec5SDimitry Andric 130b57cec5SDimitry Andric #include "int_lib.h" 140b57cec5SDimitry Andric 150b57cec5SDimitry Andric // Returns: a + b 160b57cec5SDimitry Andric 170b57cec5SDimitry Andric // Effects: aborts if a + b overflows 180b57cec5SDimitry Andric __addvdi3(di_int a,di_int b)190b57cec5SDimitry AndricCOMPILER_RT_ABI di_int __addvdi3(di_int a, di_int b) { 200b57cec5SDimitry Andric di_int s = (du_int)a + (du_int)b; 210b57cec5SDimitry Andric if (b >= 0) { 220b57cec5SDimitry Andric if (s < a) 230b57cec5SDimitry Andric compilerrt_abort(); 240b57cec5SDimitry Andric } else { 250b57cec5SDimitry Andric if (s >= a) 260b57cec5SDimitry Andric compilerrt_abort(); 270b57cec5SDimitry Andric } 280b57cec5SDimitry Andric return s; 290b57cec5SDimitry Andric } 30