2006-06-07 Zdenek Dvorak <dvorakz@suse.cz>
+ PR tree-optimization/27872
+ * tree-ssa-loop-manip.c (tree_unroll_loop): Set EDGE_IRREDUCIBLE_LOOP
+ flag on the new exit edge of the unrolled loop.
+
+2006-06-07 Zdenek Dvorak <dvorakz@suse.cz>
+
PR rtl-optimization/26449
* loop-invariant.c (move_invariant_reg): Fail if force_operand fails.
use_operand_p op;
bool ok;
unsigned est_niter;
+ unsigned irr = loop_preheader_edge (loop)->flags & EDGE_IRREDUCIBLE_LOOP;
sbitmap wont_exit;
est_niter = expected_loop_iterations (loop);
loop_split_edge_with (loop_latch_edge (loop), NULL);
exit_bb = single_pred (loop->latch);
- new_exit = make_edge (exit_bb, rest, EDGE_FALSE_VALUE);
+ new_exit = make_edge (exit_bb, rest, EDGE_FALSE_VALUE | irr);
new_exit->count = loop_preheader_edge (loop)->count;
est_niter = est_niter / factor + 1;
new_exit->probability = REG_BR_PROB_BASE / est_niter;