1*3cab2bb3Spatrick //===-- addvdi3.c - Implement __addvdi3 -----------------------------------===// 2*3cab2bb3Spatrick // 3*3cab2bb3Spatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*3cab2bb3Spatrick // See https://llvm.org/LICENSE.txt for license information. 5*3cab2bb3Spatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*3cab2bb3Spatrick // 7*3cab2bb3Spatrick //===----------------------------------------------------------------------===// 8*3cab2bb3Spatrick // 9*3cab2bb3Spatrick // This file implements __addvdi3 for the compiler_rt library. 10*3cab2bb3Spatrick // 11*3cab2bb3Spatrick //===----------------------------------------------------------------------===// 12*3cab2bb3Spatrick 13*3cab2bb3Spatrick #include "int_lib.h" 14*3cab2bb3Spatrick 15*3cab2bb3Spatrick // Returns: a + b 16*3cab2bb3Spatrick 17*3cab2bb3Spatrick // Effects: aborts if a + b overflows 18*3cab2bb3Spatrick __addvdi3(di_int a,di_int b)19*3cab2bb3SpatrickCOMPILER_RT_ABI di_int __addvdi3(di_int a, di_int b) { 20*3cab2bb3Spatrick di_int s = (du_int)a + (du_int)b; 21*3cab2bb3Spatrick if (b >= 0) { 22*3cab2bb3Spatrick if (s < a) 23*3cab2bb3Spatrick compilerrt_abort(); 24*3cab2bb3Spatrick } else { 25*3cab2bb3Spatrick if (s >= a) 26*3cab2bb3Spatrick compilerrt_abort(); 27*3cab2bb3Spatrick } 28*3cab2bb3Spatrick return s; 29*3cab2bb3Spatrick } 30