gcc/testsuite/gcc.dg/attr-assume_aligned-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 char *my_alloc1 (int len) __attribute__((__assume_aligned__ (32)));
   5 char *my_alloc2 (int len) __attribute__((assume_aligned (32, 4)));
   6
   7 int
   8 test1 (int len)
   9 {
  10   int i;
  11   char *p = my_alloc1 (len);
  12   return ((__INTPTR_TYPE__) p) & 31;
  13 }
  14
  15 int
  16 test2 (int len)
  17 {
  18   int i;
  19   char *p = my_alloc2 (len);
  20   return (((__INTPTR_TYPE__) p) & 31) != 4;
  21 }
  22
  23 /* { dg-final { scan-tree-dump-times "return 0" 2 "optimized" } } */