gcc/testsuite/gcc.dg/predict-16.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-profile_estimate" } */
   3
   4 #include <stdlib.h>
   5 #include <string.h>
   6
   7 void *r;
   8 void *r2;
   9 void *r3;
  10 void *r4;
  11 void *r5;
  12
  13 void *m (size_t s, int c)
  14 {
  15   r = malloc (s);
  16   if (r)
  17     memset (r, 0, s);
  18
  19   r2 = calloc (s, 0);
  20   if (r2)
  21     memset (r2, 0, s);
  22
  23   r3 = __builtin_malloc (s);
  24   if (r3)
  25     memset (r3, 0, s);
  26
  27   r4 = __builtin_calloc (s, 0);
  28   if (r4)
  29     memset (r4, 0, s);
  30
  31   r5 = __builtin_realloc (r4, s);
  32   if (r5)
  33     memset (r4, 0, s);
  34 }
  35
  36 /* { dg-final { scan-tree-dump-times "malloc returned non-NULL heuristics of edge\[^:\]*: 99.96%" 5 "profile_estimate"} } */