params.h (ALLOW_STORE_DATA_RACES): New.

	* 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.

From-SVN: r176824

1 files changed, 2 insertions, 1 deletions

diff --git a/gcc/stmt.c b/gcc/stmt.c
index 38e1e28..2fb4b18 100644
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -1759,7 +1759,8 @@ expand_return (tree retval)
 
 	  /* Use bitpos for the source extraction (left justified) and
 	     xbitpos for the destination store (right justified).  */
-	  store_bit_field (dst, bitsize, xbitpos % BITS_PER_WORD, word_mode,
+	  store_bit_field (dst, bitsize, xbitpos % BITS_PER_WORD,
+			   0, 0, word_mode,
 			   extract_bit_field (src, bitsize,
 					      bitpos % BITS_PER_WORD, 1, false,
 					      NULL_RTX, word_mode, word_mode));