+2016-01-26 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/69452
+ * tree-ssa-loop-im.c (move_computations_dom_walker): Remove.
+ (move_computations_dom_walker::before_dom_children): Rename
+ to ...
+ (move_computations_worker): This.
+ (move_computations): Perform an RPO rather than a DOM walk.
+
2016-01-26 Jakub Jelinek <jakub@redhat.com>
PR target/69442
data stored in LIM_DATA structures associated with each statement. Callback
for walk_dominator_tree. */
-edge
-move_computations_dom_walker::before_dom_children (basic_block bb)
+unsigned int
+move_computations_worker (basic_block bb)
{
struct loop *level;
unsigned cost = 0;
struct lim_aux_data *lim_data;
+ unsigned int todo = 0;
if (!loop_outer (bb->loop_father))
- return NULL;
+ return todo;
for (gphi_iterator bsi = gsi_start_phis (bb); !gsi_end_p (bsi); )
{
gimple_cond_lhs (cond), gimple_cond_rhs (cond));
new_stmt = gimple_build_assign (gimple_phi_result (stmt),
COND_EXPR, t, arg0, arg1);
- todo_ |= TODO_cleanup_cfg;
+ todo |= TODO_cleanup_cfg;
}
if (INTEGRAL_TYPE_P (TREE_TYPE (gimple_assign_lhs (new_stmt)))
&& (!ALWAYS_EXECUTED_IN (bb)
else
gsi_insert_on_edge (e, stmt);
}
- return NULL;
+
+ return todo;
}
/* Hoist the statements out of the loops prescribed by data stored in
static unsigned int
move_computations (void)
{
- move_computations_dom_walker walker (CDI_DOMINATORS);
- walker.walk (cfun->cfg->x_entry_block_ptr);
+ int *rpo = XNEWVEC (int, last_basic_block_for_fn (cfun));
+ int n = pre_and_rev_post_order_compute_fn (cfun, NULL, rpo, false);
+ unsigned todo = 0;
+
+ for (int i = 0; i < n; ++i)
+ todo |= move_computations_worker (BASIC_BLOCK_FOR_FN (cfun, rpo[i]));
+
+ free (rpo);
gsi_commit_edge_inserts ();
if (need_ssa_update_p (cfun))
rewrite_into_loop_closed_ssa (NULL, TODO_update_ssa);
- return walker.todo_;
+ return todo;
}
/* Checks whether the statement defining variable *INDEX can be hoisted