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r147282 - in /trunk/gcc: ChangeLog df-problems....
- From: bonzini at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Fri, 08 May 2009 12:22:31 -0000
- Subject: r147282 - in /trunk/gcc: ChangeLog df-problems....
Author: bonzini
Date: Fri May 8 12:22:30 2009
New Revision: 147282
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=147282
Log:
2009-05-08 Paolo Bonzini <bonzini@gnu.org>
PR rtl-optimization/33928
PR 26854
* fwprop.c (use_def_ref, get_def_for_use, bitmap_only_bit_bitween,
process_uses, build_single_def_use_links): New.
(update_df): Update use_def_ref.
(forward_propagate_into): Use get_def_for_use instead of use-def
chains.
(fwprop_init): Call build_single_def_use_links and let it initialize
dataflow.
(fwprop_done): Free use_def_ref.
(fwprop_addr): Eliminate duplicate call to df_set_flags.
* df-problems.c (df_rd_simulate_artificial_defs_at_top,
df_rd_simulate_one_insn): New.
(df_rd_bb_local_compute_process_def): Update head comment.
(df_chain_create_bb): Use the new RD simulation functions.
* df.h (df_rd_simulate_artificial_defs_at_top,
df_rd_simulate_one_insn): New.
* opts.c (decode_options): Enable fwprop at -O1.
* doc/invoke.texi (-fforward-propagate): Document this.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/df-problems.c
trunk/gcc/df.h
trunk/gcc/doc/invoke.texi
trunk/gcc/fwprop.c
trunk/gcc/opts.c