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author | Jan Hubicka <jh@suse.cz> | 2009-04-25 11:02:05 +0200 |
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committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2009-04-25 09:02:05 +0000 |
commit | 496a4ef59d7830dbedecb7718cb2b4c0a7377528 (patch) | |
tree | d9aa3a1c938bc4df3cbd34eb918dde4d83d84237 /gcc/except.h | |
parent | bc2a4733e2715627ca95a1bccda96a9c2be30ea5 (diff) | |
download | gcc-496a4ef59d7830dbedecb7718cb2b4c0a7377528.zip gcc-496a4ef59d7830dbedecb7718cb2b4c0a7377528.tar.gz gcc-496a4ef59d7830dbedecb7718cb2b4c0a7377528.tar.bz2 |
tree-eh.c (tree_remove_unreachable_handlers): Handle shared labels.
* tree-eh.c (tree_remove_unreachable_handlers): Handle shared labels.
(tree_empty_eh_handler_p): Allow non-EH predecestors; allow region
to be reached by different label than left.
(update_eh_edges): Update comment; remove edge_to_remove if possible
and return true if suceeded.
(cleanup_empty_eh): Accept sharing map; handle shared regions.
(cleanup_eh): Compute sharing map.
* except.c (remove_eh_handler_and_replace): Add argument if we should
update regions.
(remove_unreachable_regions): Update for label sharing.
(label_to_region_map): Likewise.
(get_next_region_sharing_label): New function.
(remove_eh_handler_and_replace): Add update_catch_try parameter; update
prev_try pointers.
(remove_eh_handler): Update.
(remove_eh_region_and_replace_by_outer_of): New function.
* except.h (struct eh_region): Add next_region_sharing_label.
(remove_eh_region_and_replace_by_outer_of,
get_next_region_sharing_label): Declare.
* tree-cfgcleanup.c (tree_forwarder_block_p): Simplify.
* tree-cfg.c (split_critical_edges): Split also edges where we can't
insert code even if they are not critical.
* tree-cfg.c (gimple_can_merge_blocks_p): EH edges are unmergable.
(gimple_can_remove_branch_p): EH edges won't remove branch by
redirection.
* tree-inline.c (update_ssa_across_abnormal_edges): Do handle
updating of non-abnormal EH edges.
* tree-cfg.c (gimple_can_merge_blocks_p): EH edges are unmergable.
(gimple_can_remove_branch_p): EH edges are unremovable by redirection.
(split_critical_edges): Split also edges where emitting code on them
will lead to splitting later.
From-SVN: r146763
Diffstat (limited to 'gcc/except.h')
-rw-r--r-- | gcc/except.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/except.h b/gcc/except.h index ba75d30..14a263a 100644 --- a/gcc/except.h +++ b/gcc/except.h @@ -34,6 +34,9 @@ struct GTY(()) eh_region struct eh_region *inner; struct eh_region *next_peer; + /* List of regions sharing label. */ + struct eh_region *next_region_sharing_label; + /* An identifier for this region. */ int region_number; @@ -155,7 +158,8 @@ extern void init_eh (void); extern void init_eh_for_function (void); extern rtx reachable_handlers (rtx); -void remove_eh_region (int); +extern void remove_eh_region (int); +extern void remove_eh_region_and_replace_by_outer_of (int, int); extern void convert_from_eh_region_ranges (void); extern unsigned int convert_to_eh_region_ranges (void); @@ -274,3 +278,4 @@ extern void set_eh_throw_stmt_table (struct function *, struct htab *); extern void remove_unreachable_regions (sbitmap, sbitmap); extern VEC(int,heap) * label_to_region_map (void); extern int num_eh_regions (void); +extern int get_next_region_sharing_label (int); |