r176824 - in /trunk/gcc: ChangeLog Makefile.in ...

[aldyh at gcc dot gnu dot org]

Author: aldyh
Date: Wed Jul 27 13:22:09 2011
New Revision: 176824

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176824
Log:
	* params.h (ALLOW_STORE_DATA_RACES): New.
	* params.def (PARAM_ALLOW_STORE_DATA_RACES): New.
	* Makefile.in (expr.o): Depend on PARAMS_H.
	* machmode.h (get_best_mode): Add argument.
	* fold-const.c (optimize_bit_field_compare): Add argument to
	get_best_mode.
	(fold_truthop): Same.
	* ifcvt.c (noce_emit_move_insn): Add argument to store_bit_field.
	* expr.c (emit_group_store): Same.
	(copy_blkmode_from_reg): Same.
	(write_complex_part): Same.
	(optimize_bitfield_assignment_op): Add argument.
	Add argument to get_best_mode.
	(get_bit_range): New.
	(expand_assignment): Calculate maxbits and pass it down
	accordingly.
	(store_field): New argument.
	(expand_expr_real_2): New argument to store_field.
	Include params.h.
	* expr.h (store_bit_field): New argument.
	* stor-layout.c (get_best_mode): Restrict mode expansion by taking
	into account maxbits.
	* calls.c (store_unaligned_arguments_into_pseudos): New argument
	to store_bit_field.
	* expmed.c (store_bit_field_1): New argument.  Use it.
	(store_bit_field): Same.
	(store_fixed_bit_field): Same.
	(store_split_bit_field): Same.
	(extract_bit_field_1): Pass new argument to get_best_mode.
	(extract_bit_field): Same.
	* stmt.c (store_bit_field): Pass new argument to store_bit_field.
	* doc/invoke.texi: Document parameter allow-store-data-races.


Added:
    trunk/gcc/testsuite/c-c++-common/cxxbitfields-2.c
    trunk/gcc/testsuite/c-c++-common/cxxbitfields-3.c
    trunk/gcc/testsuite/c-c++-common/cxxbitfields-4.c
    trunk/gcc/testsuite/c-c++-common/cxxbitfields-5.c
    trunk/gcc/testsuite/c-c++-common/cxxbitfields.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/calls.c
    trunk/gcc/doc/invoke.texi
    trunk/gcc/expmed.c
    trunk/gcc/expr.c
    trunk/gcc/expr.h
    trunk/gcc/fold-const.c
    trunk/gcc/ifcvt.c
    trunk/gcc/machmode.h
    trunk/gcc/params.def
    trunk/gcc/params.h
    trunk/gcc/stmt.c
    trunk/gcc/stor-layout.c