[Bug tree-optimization/19831] Missing DSE/malloc/free optimization

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2009-06-26 15:39 -------
And we want to optimize

void *malloc(__SIZE_TYPE__);
void free(void*);
void abort(void);
int f(void)
{
  char *i = malloc(1);
  if (i == (void *)0)
    abort ();
  *i = 1;
  free (i);
}

the same (removing the check and the abort() call).

Which asks for doing the task all at once.  Somewhere.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19831