| //===-- cmpdi2.c - Implement __cmpdi2 -------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements __cmpdi2 for the compiler_rt library. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "int_lib.h" |
| |
| // Returns: if (a < b) returns 0 |
| // if (a == b) returns 1 |
| // if (a > b) returns 2 |
| |
| COMPILER_RT_ABI si_int __cmpdi2(di_int a, di_int b) { |
| dwords x; |
| x.all = a; |
| dwords y; |
| y.all = b; |
| if (x.s.high < y.s.high) |
| return 0; |
| if (x.s.high > y.s.high) |
| return 2; |
| if (x.s.low < y.s.low) |
| return 0; |
| if (x.s.low > y.s.low) |
| return 2; |
| return 1; |
| } |
| |
| #ifdef __ARM_EABI__ |
| // Returns: if (a < b) returns -1 |
| // if (a == b) returns 0 |
| // if (a > b) returns 1 |
| COMPILER_RT_ABI si_int __aeabi_lcmp(di_int a, di_int b) { |
| return __cmpdi2(a, b) - 1; |
| } |
| #endif |
