cfgrtl.c (verify_hot_cold_block_grouping): Return err.

cfgrtl.c (verify_hot_cold_block_grouping): Return err.

2013-05-16  Teresa Johnson  <tejohnson@google.com>

	* cfgrtl.c (verify_hot_cold_block_grouping): Return err.
	(rtl_verify_edges): New function.
	(rtl_verify_bb_insns): Ditto.
	(rtl_verify_bb_pointers): Ditto.
	(rtl_verify_bb_insn_chain): Ditto.
	(rtl_verify_fallthru): Ditto.
	(rtl_verify_bb_layout): Ditto.
	(rtl_verify_flow_info_1): Outline checks into new functions.
	(rtl_verify_flow_info): Ditto.

From-SVN: r198982