diff options
Diffstat (limited to 'gcc/cfgloopanal.c')
| -rw-r--r-- | gcc/cfgloopanal.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/cfgloopanal.c b/gcc/cfgloopanal.c index 6c625d6..f40a48f 100644 --- a/gcc/cfgloopanal.c +++ b/gcc/cfgloopanal.c @@ -565,3 +565,32 @@ global_cost_for_size (unsigned size, unsigned regs_used, unsigned n_uses) return cost; } +/* Sets EDGE_LOOP_EXIT flag for all exits of LOOPS. */ + +void +mark_loop_exit_edges (struct loops *loops) +{ + basic_block bb; + edge e; + + if (loops->num <= 1) + return; + + FOR_EACH_BB (bb) + { + edge_iterator ei; + + /* Do not mark exits from the fake outermost loop. */ + if (!bb->loop_father->outer) + continue; + + FOR_EACH_EDGE (e, ei, bb->succs) + { + if (loop_exit_edge_p (bb->loop_father, e)) + e->flags |= EDGE_LOOP_EXIT; + else + e->flags &= ~EDGE_LOOP_EXIT; + } + } +} + |