* Makefile.in (calls.o): Depend on except.h.

	* Makefile.in (calls.o): Depend on except.h.
	* calls.c: Include except.h.
	(emit_call_1): Call note_eh_region_may_contain_throw if
	appropriate.
	* except.c (eh_region): Add may_contain_throw.
	(expand_eh_region_end_cleanup): Do not include handler code when
	it cannot be reached.
	(note_eh_region_may_contain_throw): New function.
	* except.h (note_eh_region_may_contain_throw): New function.

	* call.c (build_over_call): Use build_cxx_call.
	(build_cxx_call): New method, split out of build_over_call.
	* cp-tree.h (language_function): Add can_throw.
	(build_cxx_call): Declare it.
	* decl.c (finish_function): If a function does not contain any
	calls to functions that can throw an exception, indicate that
	fact.
	* decl2.c (mark_used): Do not defer the instantiation of
	functions, if the current function does not throw.
	* optimize.c (maybe_clone_body): Copy TREE_NOTHROW to the clones.
	* pt.c (instantiate_decl): Make sure import_export_decl is called
	before emitting things.
	* rtti.c (throw_bad_cast): Use build_cxx_call.
	(build_dynamic_cast_1): Likewise.
	* typeck.c (build_function_call): Likewise.

	* g++.dg/template/recurse.C: Adjust location of error messages.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@65929 138bc75d-0d04-0410-961f-82ee72b054a4