tree-ssa-loop-ch.c (copy_loop_headers): Remove redundant checking.

tree-ssa-loop-ch.c (copy_loop_headers): Remove redundant checking.

2012-08-22  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-loop-ch.c (copy_loop_headers): Remove redundant checking.
	* tree-into-ssa.c (initialize_flags_in_bb): Use gcc_checking_assert
	instead of gcc_assert.
	(mark_block_for_update): Likewise.
	(add_new_name_mapping): Likewise.
	(mark_def_sites): Likewise.
	(insert_phi_nodes_for): Likewise.
	(rewrite_debug_stmt_uses): Likewise.
	(rewrite_stmt): Likewise.
	(maybe_register_def): Likewise.
	(rewrite_update_phi_arguments): Likewise.
	(rewrite_update_enter_block): Likewise.
	(mark_def_interesting): Likewise.
	(prepare_def_site_for): Likewise.
	(insert_updated_phi_nodes_for): Likewise.

From-SVN: r190593