6d41a92f7c
* except.c: Support for catching a list of types with a single handler
(struct eh_region): Change type and filter to lists for catch regions.
(mark_eh_region): Mark the filter list for GC also.
(expand_start_catch): Always build a list if argument not NULL and
register each type of the list through add_type_for_runtime.
(duplicate_eh_region_1): Change type into type_list for catch regions.
(assign_filter_values): Assign a filter to each type associated with a
catch region. Assign filter for NULL types in a unique entry in the
filter list.
(build_post_landing_pads): Emit compare and jump for each filter of
the list associated with a catch region.
(reachable_next_level): When the type thrown is known, stop the search
as soon as one type within a catch list matches. Also, a handler is
potentially reachable only if at least one of the types it catches
has not been previously caught.
(collect_one_action_chain): Retrieve the filter for a NULL type list
from the first filter list entry. For non NULL type lists, add an
action record for every filter assigned.
* except.h: Reflect changes in comment before expand_start_catch.
From-SVN: r47087
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