genmatch.c (verbose): New global.

genmatch.c (verbose): New global.

2015-07-30  Richard Biener  <rguenther@suse.de>

	* genmatch.c (verbose): New global.
	(warning_at): Add overload with source_location.
	(capture_info::capture_info): Add bool whether generating gimple
	or generic.  Add gimple member.
	(capture_info::cinfo): Add capture member.
	(capture_info::walk_match): Record capture.  Warn on
	non-captured leafs.
	(capture_info::walk_c_expr): Add more fragments captures cannot
	escape through.  Warn on escaped captures.
	(dt_simplify::gen_1): Warn on operands we force to have no
	side-effects.
	(main): Initialize verbose.
	* match.pd: Add integer_nonzerop and HONOR_NANS predicates.

From-SVN: r226386