* sched.c: (memrefs_conflict_p): We can work out whether references
via hard_frame_pointer_rtx are likely to conflict.
(attach_deaths, case REG): Don't add death notes for
HARD_FRAME_POINTER_REGNUM.
From-SVN: r5466
(split_hard_reg_notes): Handle 0th sub register, and
multiple register kills.
(update_flow_info): For multi-word hard regs, use
split_hard_reg_notes to add all REG_DEAD notes, instead of just
the additional ones due to splitting.
From-SVN: r4460
(create_reg_dead_note): Rewrite so as to conserve
registers killed not number of REG_DEAD notes.
(schedule_block): Change comments about dead_notes variable.
From-SVN: r4222
(init_alias_analysis): Allocate and compute reg_known_equiv_p.
(sched_analyze_1): Reenable code for REG_EQUIV notes, using
reg_known_equiv_p so that it is only used on REG_EQUIV notes.
(sched_analyze_2): Likewise. Only pass memory addresses to the
sched_analyze_2 call.
From-SVN: r3746
(sched_analyze_2): Remove an explicit dependence between an insn
that uses CC0 and the immediately previous insn.
(SCHED_GROUP_P represents the dependence.)
(schedule_block): Only check sets_cc0_p on an insn.
From-SVN: r2010
Pass CLOCK to schedule_insn.
Compute the tail in the scheduling loop, not before it.
Enable the stall code that advances the insn queue.
Select the insn to schedule and block others with schedule_select.
(adjust_priority): Renamed from launch_link.
(schedule_insn): Renamed from launch_links.
(insn_queue): Use INSN_QUEUE_SIZE.
(insn_units, insn_blockage, insn_tick, unit_last_insn,
unit_tick, unit_n_insns): New variables.
(schedule_insns): Allocate and initialize insn_tick, insn_units, and
insn_blockage.
(insn_unit, blockage_range, clear_units, prepare_unit, schedule_unit,
actual_hazard_this_instance, actual_hazard, potential_hazard,
schedule_select): New functions.
(schedule_block): Add dependencies to force insns to remain in order
at the end of a block rather than relying on having the scheduler
issue them in priority order.
(insn_cost): Add LINK and USED parameters. All callers
changed. Supply an ADJUST_COST interface.
(insn_cost): Make a dependence from a USE insn free.
(priority): Clear the link cost adjustment bits.
From-SVN: r1951
(true_dependence): An unchanging read is guaranteed
independent of a store only if the store is not unchanging.
(anti_dependence): Added comment about unchanging reads.
(sched_analyze_2): Don't ignore unchanging reads, they may be
dependent on unchanging writes.
From-SVN: r1777
