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2009-09-26 Vladimir Makarov <vmakarov@redhat.com>
authorvmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4>
Wed, 14 Oct 2009 16:24:11 +0000 (16:24 +0000)
committervmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4>
Wed, 14 Oct 2009 16:24:11 +0000 (16:24 +0000)
commite8eed2f8760fe42abb9f6228677dacd7a90271a8
tree793540b6a00bb42653fb0e372d22502ee7bdf535
parentbc0ed27cfa8d09e9ea1060918377d3d2b205478e
2009-09-26  Vladimir Makarov  <vmakarov@redhat.com>

* params.def (PARAM_IRA_LOOP_RESERVED_REGS): New.
* params.h (IRA_LOOP_RESERVED_REGS): New
* tree-pass.h (pass_subregs_of_mode_init,
pass_subregs_of_mode_finish): Remove.
* passes.c (pass_subregs_of_mode_init,
pass_subregs_of_mode_finish): Remove.
(pass_reginfo_init): Move before loop optimizations.
* config/i386/i386.h (STACK_REG_COVER_CLASS): Define.
* common.opt (fira-loop-pressure): New.
* toplev.h (flag_ira_loop_pressure): New.
* rtl.h (init_subregs_of_mode, finish_subregs_of_mode): New
externals.
* reginfo.c (init_subregs_of_mode, finish_subregs_of_mode):
Make external and void type functions.
(gate_subregs_of_mode_init, pass_subregs_of_mode_init,
pass_subregs_of_mode_finish): Remove.
* ira-costs.c (init_costs): Call init_subregs_of_mode.
* regmove.c: Include ira.h.
(regmove_optimize): Call ira_set_pseudo_classes after IRA based
register pressure calculation in loops.
* loop-invariant.c: Include REGS_H and ira.h.
(struct loop_data): New members max_reg_pressure, regs_ref, and
regs_live.
(struct invariant): New member orig_regno.
(curr_loop): New variable.
(find_exits): Initialize regs_ref and regs_live.
(create_new_invariant): Initialize orig_regno.
(get_cover_class_and_nregs): New.
(get_inv_cost): Make aregs_needed an array.  Use regs_needed as an
array.  Add code for flag_ira_loop_pressure.
(gain_for_invariant): Make new_regs an array.  Add code for
flag_ira_loop_pressure.
(best_gain_for_invariant): Ditto.
(set_move_mark): New parameter gain.  Use it for debugging output.
(find_invariants_to_move): Make regs_needed and new_regs an array.
Add code for flag_ira_loop_pressure.
(move_invariant_reg): Set up orig_regno.
(move_invariants): Set up reg classes for pseudos for
flag_ira_loop_pressure.
(free_loop_data): Clear regs_ref and regs_live.
(curr_regs_live, curr_reg_pressure, regs_set, n_regs_set,
get_regno_cover_class, change_pressure, mark_regno_live,
mark_regno_death, mark_reg_store, mark_reg_clobber,
mark_reg_death, mark_ref_regs, calculate_loop_reg_pressure): New.
(move_loop_invariants): Calculate pressure.  Initialize curr_loop.
* ira.c (ira): Call ira_set_pseudo_classes after IRA based
register pressure calculation in loops if new regs were added.
Call finish_subregs_of_mode.
* opts.c (decode_options): Set up flag_ira_loop_pressure.
* Makefile.in (loop-invariant.o): Add ira.h.
(regmove.o): Ditto.
* doc/invoke.texi (-fira-loop-pressure, ira-loop-reserved-regs):
Describe.
* doc/tm.texi (STACK_REG_COVER_CLASS): Describe.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@152770 138bc75d-0d04-0410-961f-82ee72b054a4
18 files changed:
gcc/ChangeLog
gcc/Makefile.in
gcc/common.opt
gcc/config/i386/i386.h
gcc/doc/invoke.texi
gcc/doc/tm.texi
gcc/ira-costs.c
gcc/ira.c
gcc/loop-invariant.c
gcc/opts.c
gcc/params.def
gcc/params.h
gcc/passes.c
gcc/reginfo.c
gcc/regmove.c
gcc/rtl.h
gcc/toplev.h
gcc/tree-pass.h