gcc/gcc ChangeLog target.h targhooks.h targhoo ...

[rsandifo@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rsandifo@gcc.gnu.org	2004-09-04 08:50:37

Modified files:
	gcc            : ChangeLog target.h targhooks.h targhooks.c 
	                 target-def.h simplify-rtx.c optabs.c 
	gcc/doc        : md.texi tm.texi 
	gcc/config/arm : arm.c 

Log message:
	* doc/md.texi (shift patterns): New anchor.  Add reference to
	TARGET_SHIFT_TRUNCATION_MASK.
	* doc/tm.texi (TARGET_SHIFT_TRUNCATION_MASK): Document.
	* target.h (shift_truncation_mask): New target hook.
	* targhook.h (default_shift_truncation_mask): Declare.
	* targhook.c (default_shift_truncation_mask): Define.
	* target-def.h (TARGET_SHIFT_TRUNCATION_MASK): Define.
	(TARGET_INITIALIZER): Include it.
	* simplify-rtx.c (simplify_binary_operation): Combine ASHIFT, ASHIFTRT
	and LSHIFTRT cases.  Truncate arg1 if SHIFT_COUNT_TRUNCATED, otherwise
	reject all out-of-range values.  Fix sign-extension code for modes
	whose width is smaller than HOST_BITS_PER_WIDE_INT.
	* optabs.c (simplify_expand_binop, force_expand_binop): New functions.
	(expand_superword_shift, expand_subword_shift): Likewise.
	(expand_doubleword_shift_condmove, expand_doubleword_shift): Likewise.
	(expand_binop): Use them to implement double-word shifts.
	* config/arm/arm.c (arm_shift_truncation_mask): New function.
	(TARGET_SHIFT_TRUNCATION_MASK): Define.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.5251&r2=2.5252
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/target.h.diff?cvsroot=gcc&r1=1.111&r2=1.112
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/targhooks.h.diff?cvsroot=gcc&r1=2.18&r2=2.19
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/targhooks.c.diff?cvsroot=gcc&r1=2.27&r2=2.28
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/target-def.h.diff?cvsroot=gcc&r1=1.100&r2=1.101
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/simplify-rtx.c.diff?cvsroot=gcc&r1=1.202&r2=1.203
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/optabs.c.diff?cvsroot=gcc&r1=1.237&r2=1.238
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/md.texi.diff?cvsroot=gcc&r1=1.108&r2=1.109
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/tm.texi.diff?cvsroot=gcc&r1=1.363&r2=1.364
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/arm/arm.c.diff?cvsroot=gcc&r1=1.401&r2=1.402