re PR other/53316 (Introduce -Og)

re PR other/53316 (Introduce -Og)

2012-09-19  Richard Guenther  <rguenther@suse.de>

	PR other/53316
	* common.opt (optimize_debug): New variable.
	(Og): New optimization level.
	* doc/invoke.texi (Og): Document.
	* opts.c (maybe_default_option): Add debug parameter.
	(maybe_default_options): Likewise.
	(default_options_optimization): Handle -Og.
	(common_handle_option): Likewise.
	* passes.c (gate_all_optimizations): Do not run with -Og.
	(gate_all_optimizations_g): New gate, run with -Og.
	(pass_all_optimizations_g): New container pass, run with -Og.
	(init_optimization_passes): Schedule pass_all_optimizations_g
	alongside pass_all_optimizations.

From-SVN: r191464