Use rtx_insn internally within generated functions

Use rtx_insn internally within generated functions

2014-08-21  David Malcolm  <dmalcolm@redhat.com>

	* recog.h (insn_output_fn): Update this function typedef to match
	the changes below to the generated output functions, strengthening
	the 2nd param from rtx to rtx_insn *.

	* final.c (get_insn_template): Add a checked cast to rtx_insn * on
	insn when invoking an output function, to match the new signature
	of insn_output_fn with a stronger second param.

	* genconditions.c (write_header): In the generated code for
	gencondmd.c, strengthen the global "insn" from rtx to rtx_insn *
	to match the other changes in this patch.

	* genemit.c (gen_split): Strengthen the 1st param "curr_insn" of
	the generated "gen_" functions from rtx to rtx_insn * within their
	implementations.

	* genrecog.c (write_subroutine): Strengthen the 2nd param "insn" of
	the subfunctions within the generated "recog_", "split", "peephole2"
	function trees from rtx to rtx_insn *.  For now, the top-level
	generated functions ("recog", "split", "peephole2") continue to
	take a plain rtx for "insn", to avoid introducing dependencies on
	other patches.  Rename this 2nd param from "insn" to
	"uncast_insn", and reintroduce "insn" as a local variable of type
	rtx_insn *, initialized at the top of the generated function with
	a checked cast on "uncast_insn".
	(make_insn_sequence): Strengthen the 1st param "curr_insn" of
	the generated "gen_" functions from rtx to rtx_insn * within their
	prototypes.

	* genoutput.c (process_template): Strengthen the 2nd param within
	the generated "output_" functions "insn" from rtx to rtx_insn *.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@214257 138bc75d-0d04-0410-961f-82ee72b054a4