[patch] Clear bb field for insns outside of basic blocks

[Eric Botcazou]

> 	* haifa-sched.c (restore_bb_notes): Clear bb field of the notes
> 	emited outside of basic block.
> 	* cfgbuild.c (find_bb_boundaries): Clear bb field for insns between
> 	the created blocks.
> 	* rtl.h (delete_insn_chain): Declaration changed.
> 	* cfgrtl.c (delete_insn_chain): Add option to clear bb field for
> 	non-removed insns.
> 	(rtl_delete_block, rtl_merge_blocks): Pass true to delete_insn_chain.
> 	(delete_insn_chain_and_edges, try_redirect_by_replacing_jump,
> 	rtl_tidy_fallthru_edge, cfg_layout_merge_blocks): Pass false
> 	to delete_insn_chain.
> 	(rtl_verify_flow_info_1): Verify that the insns in header and footer
> 	do not have bb field set.
> 	(rtl_verify_flow_info): Verify that insns between basic blocks do not
> 	have bb field set.
> 	* recog.c (peephole2_optimize): Add argument to delete_insn_chain call.
> 	* cfgcleanup.c (try_optimize_cfg): Ditto.

This is OK for mainline, thanks.

-- 
Eric Botcazou