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r187015 - in /trunk/gcc: ChangeLog Makefile.in ...
- From: rsandifo at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Tue, 01 May 2012 14:45:26 -0000
- Subject: r187015 - in /trunk/gcc: ChangeLog Makefile.in ...
Author: rsandifo
Date: Tue May 1 14:45:24 2012
New Revision: 187015
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=187015
Log:
gcc/
2012-03-31 Kenneth Zadeck <zadeck@naturalbridge.com>
Richard Sandiford <r.sandiford@uk.ibm.com>
* Makefile.in (lower-subreg.o, target-globals.o): Depend on
lower-subreg.h.
* lower-subreg.h: New file.
* target-globals.h (this_target_lower_subreg): Declare.
(target_globals): Add lower_subreg;
(restore_target_globals): Restore this_target_lower_subreg.
* target-globals.c: Include it.
(default_target_globals): Add default_target_lower_subreg.
(save_target_globals): Initialize target_lower_subreg.
* rtl.h (init_lower_subreg): Added declaration.
* toplev.c (backend_init_target): Call initializer for lower-subreg
pass.
* lower-subreg.c (LOG_COSTS, FORCE_LOWERING): New macros.
(default_target_lower_subreg): New variable.
(this_target_lower_subreg): Likewise.
(twice_word_mode, choices): New macros.
(shift_cost, compute_splitting_shift, compute_costs)
(init_lower_subreg): New functions.
(resolve_simple_move): Add speed_p argument. Check choices.
(find_pseudo_copy): Don't check the mode size here.
(resolve_simple_move): Assert the mode size.
(find_decomposable_shift_zext): Add speed_p argument and return
a bool. Check choices.
(resolve_shift_zext): Add comment.
(dump_shift_choices, dump_choices): New functions.
(decompose_multiword_subregs): Dump list of profitable
transformations. Add code to skip non profitable transformations.
Update calls to simple_move and find_decomposable_shift_zext.
Added:
trunk/gcc/lower-subreg.h
Modified:
trunk/gcc/ChangeLog
trunk/gcc/Makefile.in
trunk/gcc/lower-subreg.c
trunk/gcc/rtl.h
trunk/gcc/target-globals.c
trunk/gcc/target-globals.h
trunk/gcc/toplev.c