haifa-sched.c (split_hard_reg_notes): Move to flow.c
* haifa-sched.c (split_hard_reg_notes): Move to flow.c
(new_insn_dead_notes): Likewise.
(update_n_sets): Likewise.
(update_flow_info): Move to flow.c, renamed to update_life_info;
extend to handle multiple source insns.
* flow.c: Include resource.h
(unlink_insn_chain): New.
(split_hard_reg_notes): New.
(maybe_add_dead_note): New.
(maybe_add_dead_note_use): New.
(find_insn_with_note): New.
(new_insn_dead_notes): New.
(update_n_sets): New.
(sets_reg_or_subreg_1, sets_reg_or_subreg): New.
(maybe_remove_dead_notes): New.
(update_life_info): New.
(prepend_reg_notes): New.
(replace_insns): New.
* output.h (update_life_info): Declare.
* recog.c (split_block_insns): Use update_life_info.
* resource.c (find_free_register): Use reg_alloc_order, don't use
fixed regs, make sure the mode is supported, don't use new regs.
(reg_dead_p): New.
* rtl.h (replace_insns): Declare.
Co-Authored-By: Richard Henderson <rth@cygnus.com>
From-SVN: r28828