10b57cec5SDimitry Andric //===-- negvdi2.c - Implement __negvdi2 -----------------------------------===// 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 __negvdi2 for the compiler_rt library. 100b57cec5SDimitry Andric // 110b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 120b57cec5SDimitry Andric 130b57cec5SDimitry Andric #include "int_lib.h" 140b57cec5SDimitry Andric 150b57cec5SDimitry Andric // Returns: -a 160b57cec5SDimitry Andric 170b57cec5SDimitry Andric // Effects: aborts if -a overflows 180b57cec5SDimitry Andric __negvdi2(di_int a)190b57cec5SDimitry AndricCOMPILER_RT_ABI di_int __negvdi2(di_int a) { 20*06c3fb27SDimitry Andric const di_int MIN = 21*06c3fb27SDimitry Andric (di_int)((du_int)1 << ((int)(sizeof(di_int) * CHAR_BIT) - 1)); 220b57cec5SDimitry Andric if (a == MIN) 230b57cec5SDimitry Andric compilerrt_abort(); 240b57cec5SDimitry Andric return -a; 250b57cec5SDimitry Andric } 26