[PATCH SMS 2/2, RFC] Register pressure estimation for the partial schedule (re-submission)

[Revital Eres <revital dot eres at linaro dot org>]

Hello,

The attached patch is a resubmission following comments made by Ayal
and Richard.

Tested and bootstrap with the other patches in the series on
ppc64-redhat-linux, enabling SMS on loops with SC 1.

Comments are welcome.

Thanks,
Revital


       2011-12-18  Richard Sandiford  <richard.sandiford@linaro.org>
            Revital Eres  <revital.eres@linaro.org>

        * loop-invariant.c (get_regno_pressure_class): Move function to...
        * ira.c: Here.
        * common.opt (fmodulo-sched-reg-pressure, -fmodulo-sched-verbose):
        New flags.
        * doc/invoke.texi (fmodulo-sched-reg-pressure,
        -fmodulo-sched-verbose): Document the flags.
        * ira.h (get_regno_pressure_class,
        reset_pseudo_classes_defined_p): Declare.
        * ira-costs.c (reset_pseudo_classes_defined_p): New function.
        * Makefile.in (modulo-sched.o): Include ira.h and modulo-sched.h.
        (modulo-sched-pressure.o): New.
        * modulo-sched.c (ira.h, modulo-sched.h): New includes.
        (partial_schedule_ptr, ps_insn_ptr, struct ps_insn,
        struct ps_reg_move_info, struct partial_schedule): Move to
        modulo-sched.h.
        (ps_rtl_insn, ps_reg_move): Remove static.
        (apply_reg_moves): Remove static and call df_insn_rescan only
        if PS is final.
        (undo_reg_moves): New function.
        (sms_schedule): Call register pressure estimation.
        * modulo-sched.h: New file.
        * modulo-sched-pressure.c: New file.

Attachment: patch_pressure_17_12.txt
Description: Text document