gcc/testsuite/gcc.c-torture/execute/compare-3.c

   1 /* Copyright (C) 2002 Free Software Foundation.
   2
   3    Test for composite comparison always true/false optimization.
   4
   5    Written by Roger Sayle, 7th June 2002.  */
   6
   7 extern void link_error0 ();
   8 extern void link_error1 ();
   9
  10 void
  11 test1 (int x, int y)
  12 {
  13   if ((x==y) && (x!=y))
  14     link_error0();
  15 }
  16
  17 void
  18 test2 (int x, int y)
  19 {
  20   if ((x<y) && (x>y))
  21     link_error0();
  22 }
  23
  24 void
  25 test3 (int x, int y)
  26 {
  27   if ((x<y) && (y<x))
  28     link_error0();
  29 }
  30
  31 void
  32 test4 (int x, int y)
  33 {
  34   if ((x==y) || (x!=y))
  35     {
  36     }
  37   else
  38     link_error1 ();
  39 }
  40
  41 void
  42 test5 (int x, int y)
  43 {
  44   if ((x>=y) || (x<y))
  45     {
  46     }
  47   else
  48     link_error1 ();
  49 }
  50
  51 void
  52 test6 (int x, int y)
  53 {
  54   if ((x<=y) || (y<x))
  55     {
  56     }
  57   else
  58     link_error1 ();
  59 }
  60
  61 void
  62 all_tests (int x, int y)
  63 {
  64   test1 (x, y);
  65   test2 (x, y);
  66   test3 (x, y);
  67   test4 (x, y);
  68   test5 (x, y);
  69   test6 (x, y);
  70 }
  71
  72 int
  73 main ()
  74 {
  75   all_tests (0, 0);
  76   all_tests (1, 2);
  77   all_tests (4, 3);
  78
  79   return 0;
  80 }
  81
  82 #ifndef __OPTIMIZE__
  83 void link_error0() {}
  84 void link_error1() {}
  85 #endif /* ! __OPTIMIZE__ */
  86