gcc/gcc ChangeLog optabs.c

[rth@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rth@gcc.gnu.org	2005-01-31 04:00:57

Modified files:
	gcc            : ChangeLog optabs.c 

Log message:
	PR 19696
	* optabs.c (expand_absneg_bit): Split out from expand_unop and
	expand_abs_nojump and generalize.  Use operand_subword and
	emit_no_conflict_block.  Support large modes.
	(expand_abs_nojump): Use it.  Use HONOR_SIGNED_ZEROS to fall
	back to maximum.
	(expand_unop): Likewise.  Use HONOR_SIGNED_ZEROS to fall back
	negation to subtraction.
	(expand_copysign): Check that the format has signed zeros.
	Use operand_subword and emit_no_conflict_block.  Support large modes.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.7334&r2=2.7335
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/optabs.c.diff?cvsroot=gcc&r1=1.255&r2=1.256