1*7c3d14c8STreehugger Robot /* ===-- addvti3.c - Implement __addvti3 -----------------------------------=== 2*7c3d14c8STreehugger Robot * 3*7c3d14c8STreehugger Robot * The LLVM Compiler Infrastructure 4*7c3d14c8STreehugger Robot * 5*7c3d14c8STreehugger Robot * This file is dual licensed under the MIT and the University of Illinois Open 6*7c3d14c8STreehugger Robot * Source Licenses. See LICENSE.TXT for details. 7*7c3d14c8STreehugger Robot * 8*7c3d14c8STreehugger Robot * ===----------------------------------------------------------------------=== 9*7c3d14c8STreehugger Robot * 10*7c3d14c8STreehugger Robot * This file implements __addvti3 for the compiler_rt library. 11*7c3d14c8STreehugger Robot * 12*7c3d14c8STreehugger Robot * ===----------------------------------------------------------------------=== 13*7c3d14c8STreehugger Robot */ 14*7c3d14c8STreehugger Robot 15*7c3d14c8STreehugger Robot #include "int_lib.h" 16*7c3d14c8STreehugger Robot 17*7c3d14c8STreehugger Robot #ifdef CRT_HAS_128BIT 18*7c3d14c8STreehugger Robot 19*7c3d14c8STreehugger Robot /* Returns: a + b */ 20*7c3d14c8STreehugger Robot 21*7c3d14c8STreehugger Robot /* Effects: aborts if a + b overflows */ 22*7c3d14c8STreehugger Robot 23*7c3d14c8STreehugger Robot COMPILER_RT_ABI ti_int __addvti3(ti_int a,ti_int b)24*7c3d14c8STreehugger Robot__addvti3(ti_int a, ti_int b) 25*7c3d14c8STreehugger Robot { 26*7c3d14c8STreehugger Robot ti_int s = (tu_int) a + (tu_int) b; 27*7c3d14c8STreehugger Robot if (b >= 0) 28*7c3d14c8STreehugger Robot { 29*7c3d14c8STreehugger Robot if (s < a) 30*7c3d14c8STreehugger Robot compilerrt_abort(); 31*7c3d14c8STreehugger Robot } 32*7c3d14c8STreehugger Robot else 33*7c3d14c8STreehugger Robot { 34*7c3d14c8STreehugger Robot if (s >= a) 35*7c3d14c8STreehugger Robot compilerrt_abort(); 36*7c3d14c8STreehugger Robot } 37*7c3d14c8STreehugger Robot return s; 38*7c3d14c8STreehugger Robot } 39*7c3d14c8STreehugger Robot 40*7c3d14c8STreehugger Robot #endif /* CRT_HAS_128BIT */ 41