* tree-sra.c (convert_callers): Use call_for_symbol_and_aliases.
	(struct ipa_sra_check_caller_data): Add has_thunk field.
	(ipa_sra_check_caller): Check for thunk.
	(ipa_sra_preliminary_function_checks): Give up on function with
	thunks.
	(ipa_early_sra): Use call_for_symbol_and_aliases.

From-SVN: r221171