diff options
Diffstat (limited to 'gcc/tree-cfg.c')
| -rw-r--r-- | gcc/tree-cfg.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index 025e677c396..72f73784d60 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -717,16 +717,22 @@ cleanup_tree_cfg (void) timevar_push (TV_TREE_CLEANUP_CFG); - /* These three transformations can cascade, so we iterate on them until + retval = cleanup_control_flow (); + + /* These two transformations can cascade, so we iterate on them until nothing changes. */ while (something_changed) { - something_changed = cleanup_control_flow (); - something_changed |= delete_unreachable_blocks (); + something_changed = delete_unreachable_blocks (); something_changed |= thread_jumps (); retval |= something_changed; } +#ifdef ENABLE_CHECKING + if (retval) + gcc_assert (!cleanup_control_flow ()); +#endif + /* Merging the blocks creates no new opportunities for the other optimizations, so do it here. */ merge_seq_blocks (); |