2012-05-19  Eric Botcazou  <ebotcazou@adacore.com>

	* gcc-interface/decl.c (Has_Thiscall_Convention): New macro.
	(gnat_to_gnu_entity) <E_Subprogram_Type>: Test it to set the thiscall
	calling convention
	(get_minimal_subprog_decl): Likewise.
	(gnat_first_param_is_class): New predicate.

From-SVN: r188512