[Bug rtl-optimization/39871] [4.3/4.4/4.5/4.6 regression] Code size increase on ARM due to poor register allocation

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39871

Jeffrey A. Law  changed:

   What|Removed |Added

 CC||kazu at gcc dot gnu.org

--- Comment #27 from Jeffrey A. Law  ---
*** Bug 14060 has been marked as a duplicate of this bug. ***

[Bug rtl-optimization/39871] [4.3/4.4/4.5/4.6 regression] Code size increase on ARM due to poor register allocation

[bernds at gcc dot gnu dot org]

--- Comment #25 from bernds at gcc dot gnu dot org  2010-06-17 21:52 ---
Subject: Bug 39871

Author: bernds
Date: Thu Jun 17 21:51:55 2010
New Revision: 160947

URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=160947
Log:
PR rtl-optimization/39871
* reload1.c (init_eliminable_invariants): For flag_pic, disable
equivalences only for constants that aren't LEGITIMATE_PIC_OPERAND_P.
(function_invariant_p): Rule out a plus of frame or arg pointer with
a SYMBOL_REF.
* ira.c (find_reg_equiv_invariant_const): Likewise.


Modified:
trunk/gcc/ChangeLog
trunk/gcc/ira.c
trunk/gcc/reload1.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39871

[Bug rtl-optimization/39871] [4.3/4.4/4.5/4.6 regression] Code size increase on ARM due to poor register allocation

[bernds at gcc dot gnu dot org]

--- Comment #26 from bernds at gcc dot gnu dot org  2010-06-17 21:54 ---
Fixed.


-- 

bernds at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution||FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39871

[Bug rtl-optimization/39871] [4.3/4.4/4.5/4.6 regression] Code size increase on ARM due to poor register allocation

[bernds at gcc dot gnu dot org]

--- Comment #24 from bernds at gcc dot gnu dot org  2010-06-04 12:44 ---
Subject: Bug 39871

Author: bernds
Date: Fri Jun  4 12:44:01 2010
New Revision: 160260

URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=160260
Log:
PR rtl-optimization/39871
PR rtl-optimization/40615
PR rtl-optimization/42500
PR rtl-optimization/42502
* ira.c (init_reg_equiv_memory_loc: New function.
(ira): Call it twice.
* reload.h (calculate_elim_costs_all_insns): Declare.
* ira-costs.c: Include reload.h.
(regno_equiv_gains): New static variable.
(init_costs): Allocate it.
(finish_costs): Free it.
(ira_costs): Call calculate_elim_costs_all_insns.
(find_costs_and_classes): Take estimated elimination costs
into account.
(ira_adjust_equiv_reg_cost): New function.
* ira.h (ira_adjust_equiv_reg_cost): Declare it.
* reload1.c (init_eliminable_invariants, free_reg_equiv,
elimination_costs_in_insn, note_reg_elim_costly): New static
functions.
(elim_bb): New static variable.
(reload): Move code out of here into init_eliminable_invariants and
free_reg_equiv.  Call them.
(calculate_elim_costs_all_insns): New function.
(eliminate_regs_1): Declare.  Add extra arg FOR_COSTS;
all callers changed.  If FOR_COSTS is true, don't call alter_reg,
but call note_reg_elim_costly if we turned a valid memory address
into an invalid one.
* Makefile.in (ira-costs.o): Depend on reload.h.

testsuite/
PR rtl-optimization/39871
PR rtl-optimization/40615
PR rtl-optimization/42500
PR rtl-optimization/42502
* gcc.target/arm/eliminate.c: New test.


Added:
trunk/gcc/testsuite/gcc.target/arm/eliminate.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/Makefile.in
trunk/gcc/ira-costs.c
trunk/gcc/ira.c
trunk/gcc/ira.h
trunk/gcc/reload.h
trunk/gcc/reload1.c
trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39871