gcc/testsuite/gcc.dg/const-uniq-1.c

   1 /* Verify that the 2 constant initializers are uniquized.  */
   2
   3 /* { dg-do compile } */
   4 /* { dg-options "-Os -fdump-tree-gimple" } */
   5
   6 int lookup1 (int i)
   7 {
   8   /* We use vectors long enough that piece-wise initialization is not
   9      reasonably preferable even for size (when including the constant
  10      vectors for initialization) for any target.  */
  11   int a[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  12               16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 };
  13   return a[i];
  14 }
  15
  16 int lookup2 (int i)
  17 {
  18   int a[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  19               16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 };
  20   return a[i+1];
  21 }
  22
  23 /* { dg-final { scan-tree-dump-times "L\\\$?C\\\.*0" 2 "gimple" } } */
  24 /* { dg-final { cleanup-tree-dump "gimple" } } */