compiler-rt/test/builtins/Unit/cmpdi2_test.c

   1 // RUN: %clang_builtins %s %librt -o %t && %run %t
   2 // REQUIRES: librt_has_cmpdi2
   3 //===-- cmpdi2_test.c - Test __cmpdi2 -------------------------------------===//
   4 //
   5 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   6 // See https://llvm.org/LICENSE.txt for license information.
   7 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   8 //
   9 //===----------------------------------------------------------------------===//
  10 //
  11 // This file tests __cmpdi2 for the compiler_rt library.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "int_lib.h"
  16 #include <stdio.h>
  17
  18 // Returns:  if (a <  b) returns 0
  19 //           if (a == b) returns 1
  20 //           if (a >  b) returns 2
  21
  22 COMPILER_RT_ABI si_int __cmpdi2(di_int a, di_int b);
  23
  24 int test__cmpdi2(di_int a, di_int b, si_int expected)
  25 {
  26     si_int x = __cmpdi2(a, b);
  27     if (x != expected)
  28         printf("error in __cmpdi2(0x%llX, 0x%llX) = %d, expected %d\n",
  29                a, b, x, expected);
  30     return x != expected;
  31 }
  32
  33 char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
  34
  35 int main()
  36 {
  37     if (test__cmpdi2(0, 0, 1))
  38         return 1;
  39     if (test__cmpdi2(1, 1, 1))
  40         return 1;
  41     if (test__cmpdi2(2, 2, 1))
  42         return 1;
  43     if (test__cmpdi2(0x7FFFFFFF, 0x7FFFFFFF, 1))
  44         return 1;
  45     if (test__cmpdi2(0x80000000, 0x80000000, 1))
  46         return 1;
  47     if (test__cmpdi2(0x80000001, 0x80000001, 1))
  48         return 1;
  49     if (test__cmpdi2(0xFFFFFFFF, 0xFFFFFFFF, 1))
  50         return 1;
  51     if (test__cmpdi2(0x000000010000000LL, 0x000000010000000LL, 1))
  52         return 1;
  53     if (test__cmpdi2(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL, 1))
  54         return 1;
  55
  56     if (test__cmpdi2(0x0000000200000002LL, 0x0000000300000001LL, 0))
  57         return 1;
  58     if (test__cmpdi2(0x0000000200000002LL, 0x0000000300000002LL, 0))
  59         return 1;
  60     if (test__cmpdi2(0x0000000200000002LL, 0x0000000300000003LL, 0))
  61         return 1;
  62
  63     if (test__cmpdi2(0x0000000200000002LL, 0x0000000100000001LL, 2))
  64         return 1;
  65     if (test__cmpdi2(0x0000000200000002LL, 0x0000000100000002LL, 2))
  66         return 1;
  67     if (test__cmpdi2(0x0000000200000002LL, 0x0000000100000003LL, 2))
  68         return 1;
  69
  70     if (test__cmpdi2(0x0000000200000002LL, 0x0000000200000001LL, 2))
  71         return 1;
  72     if (test__cmpdi2(0x0000000200000002LL, 0x0000000200000002LL, 1))
  73         return 1;
  74     if (test__cmpdi2(0x0000000200000002LL, 0x0000000200000003LL, 0))
  75         return 1;
  76
  77    return 0;
  78 }