51 lines · c
1// RUN: %clang_builtins %s %librt -o %t && %run %t2// REQUIRES: librt_has_subvdi33 4#include "int_lib.h"5#include <stdio.h>6#include <stdlib.h>7 8// Returns: a - b9 10// Effects: aborts if a - b overflows11 12COMPILER_RT_ABI di_int __subvdi3(di_int a, di_int b);13 14int test__subvdi3(di_int a, di_int b)15{16 di_int x = __subvdi3(a, b);17 di_int expected = a - b;18 if (x != expected)19 printf("error in test__subvsi3(0x%llX, 0x%llX) = %lld, expected %lld\n",20 a, b, x, expected);21 return x != expected;22}23 24int main()25{26// test__subvdi3(0x8000000000000000LL, 1); // should abort27// test__subvdi3(0, 0x8000000000000000LL); // should abort28// test__subvdi3(1, 0x8000000000000000LL); // should abort29// test__subvdi3(0x7FFFFFFFFFFFFFFFLL, -1); // should abort30// test__subvdi3(-2, 0x7FFFFFFFFFFFFFFFLL); // should abort31 32 if (test__subvdi3(0x8000000000000000LL, -1))33 return 1;34 if (test__subvdi3(0x8000000000000000LL, 0))35 return 1;36 if (test__subvdi3(-1, 0x8000000000000000LL))37 return 1;38 if (test__subvdi3(0x7FFFFFFFFFFFFFFLL, 1))39 return 1;40 if (test__subvdi3(0x7FFFFFFFFFFFFFFFLL, 0))41 return 1;42 if (test__subvdi3(1, 0x7FFFFFFFFFFFFFFLL))43 return 1;44 if (test__subvdi3(0, 0x7FFFFFFFFFFFFFFFLL))45 return 1;46 if (test__subvdi3(-1, 0x7FFFFFFFFFFFFFFFLL))47 return 1;48 49 return 0;50}51