gcc/testsuite/gcc.dg/strcmpopt_3.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 __attribute__ ((noinline)) int
   5 f1 (void)
   6 {
   7   char *s0= "abcd";
   8   char s[8];
   9   __builtin_strcpy (s, s0);
  10   return __builtin_strcmp (s, "abc") != 0;
  11 }
  12
  13 __attribute__ ((noinline)) int
  14 f2 (void)
  15 {
  16   char *s0 = "ab";
  17   char s[8];
  18   __builtin_strcpy (s, s0);
  19   return __builtin_strcmp ("abc", s) != 0;
  20 }
  21
  22 int main (void)
  23 {
  24   if (f1 () != 1
  25       || f2 () != 1)
  26     __builtin_abort ();
  27
  28   return 0;
  29 }
  30
  31 /* { dg-final { scan-tree-dump-times "strcmp" 0 "optimized" } } */