/* A test for strength reduction and induction variable elimination. */ /* { dg-do compile } */ /* { dg-options "-O1 -fdump-tree-vars" } */ /* Size of this structure should be sufficiently weird so that no memory addressing mode applies. */ struct bla { char x[187]; int y; char z[253]; } arr_base[100]; int foo(void); void xxx(void) { int iter; for (iter = 0; iter < 100; iter++) arr_base[iter].y = foo (); } /* Access to arr_base[iter].y should be strength reduced. */ /* { dg-final { scan-tree-dump-times "arr_base\[^\\n\\r\]*=" 0 "vars" } } */ /* And the original induction variable should be eliminated. */ /* { dg-final { scan-tree-dump-times "iter" 0 "vars" } } */