1 /* A test for strength reduction and induction variable elimination. */
3 /* { dg-do compile } */
4 /* { dg-options "-O1 -fdump-tree-optimized" } */
5 /* { dg-require-effective-target size32plus } */
7 /* Size of this structure should be sufficiently weird so that no memory
8 addressing mode applies. */
21 for (iter
= 0; iter
< 100; iter
++)
22 arr_base
[iter
].y
= 17 * iter
;
25 /* Access to arr_base[iter].y should be strength reduced, i.e., there should
26 be no multiplication. */
28 /* { dg-final { scan-tree-dump-times " \\* \[^\\n\\r\]*=" 0 "optimized" } } */
29 /* { dg-final { scan-tree-dump-times "\[^\\n\\r\]*= \\* " 0 "optimized" } } */
30 /* { dg-final { scan-tree-dump-times "MEM" 1 "optimized" } } */
32 /* 17 * iter should be strength reduced. */
34 /* { dg-final { scan-tree-dump-times " \\* 17" 0 "optimized" } } */
35 /* { dg-final { scan-tree-dump-times " \\+ 17" 1 "optimized" } } */
37 /* The induction variable comparison with 99 should be eliminated
38 and replaced by comparison of one of the newly created ivs. */
40 /* { dg-final { scan-tree-dump-times "iter" 0 "optimized" } } */
41 /* { dg-final { scan-tree-dump-times "99" 0 "optimized" } } */
42 /* { dg-final { scan-tree-dump-times "100" 0 "optimized" } } */
44 /* { dg-final { cleanup-tree-dump "optimized" } } */