On 10/17/14 14:51, Richard Sandiford wrote:
After the previous patch there are cases where we want to constrain operands to any enabled alternative and cases where we want to also take size/speed preferences into account. The former applies when constraining an existing instruction (which might originally have been in a block with a different size/speed choice) or when making global decisions. The latter applies when evaluating a potential optimisation.This patch therefore passes the mask of allowable alternatives as a parameter to constrain_operands. Richard gcc/ * recog.h (constrain_operands): Add an alternative_mask parameter. (constrain_operands_cached): Likewise. (get_preferred_alternatives): Declare new form. * recog.c (get_preferred_alternatives): New bb-taking instance. (constrain_operands): Take the set of available alternatives as a parameter. (check_asm_operands, insn_invalid_p, extract_constrain_insn) (extract_constrain_insn_cached): Update calls to constrain_operands. * caller-save.c (reg_save_code): Likewise. * ira.c (setup_prohibited_mode_move_regs): Likewise. * postreload-gcse.c (eliminate_partially_redundant_load): Likewise. * ree.c (combine_reaching_defs): Likewise. * reload.c (can_reload_into): Likewise. * reload1.c (reload, reload_as_needed, inc_for_reload): Likewise. (gen_reload_chain_without_interm_reg_p, emit_input_reload_insns) (emit_insn_if_valid_for_reload): Likewise. * reorg.c (fill_slots_from_thread): Likewise. * config/i386/i386.c (ix86_attr_length_address_default): Likewise. * config/pa/pa.c (pa_can_combine_p): Likewise. * config/rl78/rl78.c (insn_ok_now): Likewise. * config/sh/sh.md (define_peephole2): Likewise. * final.c (final_scan_insn): Update call to constrain_operands_cached.
OK. Thanks for taking care of this. Jeff
