gcc/testsuite/gcc.dg/tree-ssa/alias-30.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-fre1-details" } */
   3
   4 extern int posix_memalign(void **memptr,
   5                           __SIZE_TYPE__ alignment, __SIZE_TYPE__ size);
   6
   7 int foo (float *p)
   8 {
   9   int res = *p;
  10   int *q;
  11   void *tem;
  12   if (posix_memalign (&tem, 128, 128 * sizeof (int)) != 0)
  13     return 0;
  14   q = (int *)tem;
  15   *q = 1;
  16   return res + *p;
  17 }
  18
  19 /* We should be able to CSE the load from *p in the return stmt.  */
  20
  21 /* { dg-final { scan-tree-dump "Replaced \\\*p" "fre1" } } */