2010-10-22 Richard Guenther <rguenther@suse.de>
* gimple.h (gimple_register_canonical_type): Declare.
* gimple.c (gimple_canonical_types): New global hashtable.
(struct gimple_type_leader_entry_s): New type.
(gimple_type_leader): New global cache.
(gimple_lookup_type_leader): New function.
(gtc_visit): Query the proper cache.
(gimple_types_compatible_p): Likewise.
(gimple_register_type): Use the new cache instead of TYPE_CANONICAL.
(gimple_canonical_type_eq): New function.
(gimple_register_canonical_type): Likewise.
(print_gimple_types_stats): Adjust for gimple_canonical_types.
(free_gimple_type_tables): Likewise. Free gimple_type_leader.
* tree-ssa.c (useless_type_conversion_p): Do not dispatch to
gimple_types_compatible_p for LTO.
lto/
* lto.c (lto_fixup_type): Fixup TYPE_CANONICAL again, via
the new gimple_register_canonical_type.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@165848
138bc75d-0d04-0410-961f-
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