re PR objc/43061 (47 new GCC HEAD@156527 regressions)
PR objc/43061
* cgraphunit.c (process_function_and_variable_attributes): Check
DECL_PRESERVE_P instead of looking up attribute "used".
* ipa-pure-const.c (check_decl): Likewise.
* ipa-reference.c (has_proper_scope_for_analysis): Likewise.
* ipa-type-escape.c (has_proper_scope_for_analysis): Likewise.
* config/sol2.c (solaris_insert_attributes): Set DECL_PRESERVE_P
instead of attribute "used".
* config/sol2-c.c (solaris_pragma_init): Likewise.
(solaris_pragma_fini): Likewise.
From-SVN: r156907