diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-cfg.c | 12 |
2 files changed, 14 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d7d99a7..9b4c512 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-10-01 Kazu Hirata <kazu@cs.umass.edu> + + * tree-cfg.c (cleanup_tree_cfg): Pull a call to + cleanup_control_flow() out of the while loop. + 2004-10-01 Paolo Bonzini <bonzini@gnu.org> * tree-vectorizer.c (vectorizable_operation): Fail unless diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index 025e677..72f7378 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 (); |