gcc/testsuite/gcc.dg/strcmpopt_1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-fdump-tree-gimple" } */
   3
   4 #include <string.h>
   5 #include <stdlib.h>
   6
   7 int cmp1 (char *p)
   8 {
   9   return strncmp (p, "fis", 4);
  10 }
  11 int cmp2 (char *q)
  12 {
  13   return strncmp ("fis", q, 4);
  14 }
  15
  16 int main ()
  17 {
  18
  19   char *p = "fish";
  20   char *q = "fis\0";
  21
  22   if (cmp1 (p) == 0 || cmp2 (q) != 0)
  23     abort ();
  24
  25   return 0;
  26 }
  27
  28 /* { dg-final { scan-tree-dump-times "strcmp \\(" 2 "gimple" } } */