Eliminate FOR_EACH_BB_REVERSE macro.

Eliminate FOR_EACH_BB_REVERSE macro.

gcc/
	* basic-block.h (FOR_EACH_BB_REVERSE): Eliminate macro.

	* cfghooks.c (verify_flow_info): Replace uses of FOR_EACH_BB_REVERSE
	with FOR_EACH_BB_REVERSE_FN, making uses of cfun explicit.
	* cfgrtl.c (print_rtl_with_bb, rtl_verify_edges,
	rtl_verify_bb_insns, rtl_verify_bb_pointers,
	rtl_verify_bb_insn_chain, rtl_verify_fallthru): Likewise.
	* config/ia64/ia64.c (emit_predicate_relation_info): Likewise.
	* config/sh/sh.c (sh_md_init_global): Likewise.
	* config/sh/sh_optimize_sett_clrt.cc
	(sh_optimize_sett_clrt::execute): Likewise.
	* dce.c (reset_unmarked_insns_debug_uses, delete_unmarked_insns):
	Likewise.
	* dominance.c (calc_dfs_tree): Likewise.
	* final.c (final): Likewise.
	* function.c (thread_prologue_and_epilogue_insns): Likewise.
	* gcse.c (compute_code_hoist_vbeinout): Likewise.
	* ira.c (update_equiv_regs, build_insn_chain): Likewise.
	* lcm.c (compute_antinout_edge): Likewise.
	* mode-switching.c (optimize_mode_switching): Likewise.
	* postreload.c (reload_combine): Likewise.
	* recog.c (split_all_insns, peephole2_optimize): Likewise.
	* tree-ssa-live.c (live_worklist): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@205829 138bc75d-0d04-0410-961f-82ee72b054a4