gcc/testsuite/gcc.dg/tree-ssa/pr14841.c

   1 /* PR tree-optimization/14841
   2    Make sure that we can fold a possible nested reference into a
   3    constant aggregate.  */
   4
   5 /* { dg-do compile } */
   6 /* { dg-options "-O2 -fdump-tree-store_ccp-details" } */
   7
   8 struct car {
   9   int speed;
  10   int tire_pressure[4];
  11 };
  12
  13 static const struct car cars[] = {
  14   { 75, { 10, 20, 30, 40 } },
  15   { 35, { 12, 34, 56, 78 } },
  16   { 40, { 19, 28, 37, 46 } }
  17 };
  18
  19 extern void link_error (void);
  20
  21 void
  22 foo (void)
  23 {
  24   if (cars[1].tire_pressure[2] != 56)
  25     link_error ();
  26 }
  27
  28 /* { dg-final { scan-tree-dump-times "Folded statement: if " 1 "store_ccp"} } */
  29 /* { dg-final { cleanup-tree-dump "store_ccp" } } */