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| // RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_subvsi3
//===-- subvsi3_test.c - Test __subvsi3 -----------------------------------===//
//
// 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 tests __subvsi3 for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
#include <stdlib.h>
// Returns: a - b
// Effects: aborts if a - b overflows
COMPILER_RT_ABI si_int __subvsi3(si_int a, si_int b);
int test__subvsi3(si_int a, si_int b)
{
si_int x = __subvsi3(a, b);
si_int expected = a - b;
if (x != expected)
printf("error in test__subvsi3(0x%X, 0x%X) = %d, expected %d\n",
a, b, x, expected);
return x != expected;
}
int main()
{
// test__subvsi3(0x80000000, 1); // should abort
// test__subvsi3(0, 0x80000000); // should abort
// test__subvsi3(1, 0x80000000); // should abort
// test__subvsi3(0x7FFFFFFF, -1); // should abort
// test__subvsi3(-2, 0x7FFFFFFF); // should abort
if (test__subvsi3(0x80000000, -1))
return 1;
if (test__subvsi3(0x80000000, 0))
return 1;
if (test__subvsi3(-1, 0x80000000))
return 1;
if (test__subvsi3(0x7FFFFFFF, 1))
return 1;
if (test__subvsi3(0x7FFFFFFF, 0))
return 1;
if (test__subvsi3(1, 0x7FFFFFFF))
return 1;
if (test__subvsi3(0, 0x7FFFFFFF))
return 1;
if (test__subvsi3(-1, 0x7FFFFFFF))
return 1;
return 0;
}
|