gcc/gcc ChangeLog builtins.c optabs.c config/a ...

[rth@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rth@gcc.gnu.org	2005-04-20 04:54:11

Modified files:
	gcc            : ChangeLog builtins.c optabs.c 
	gcc/config/alpha: alpha.c sync.md 
	gcc/config/i386: sync.md 
	gcc/config/ia64: ia64.c sync.md 
	gcc/doc        : extend.texi 
	gcc/testsuite  : ChangeLog 
	gcc/testsuite/gcc.dg: ia64-sync-1.c ia64-sync-2.c ia64-sync-3.c 
	                      ia64-sync-4.c 
	gcc/testsuite/lib: target-supports.exp 

Log message:
	* builtins.c (expand_builtin_sync_operation): Revert last change.
	* optabs.c (expand_bool_compare_and_swap): Compare vs old value,
	not vs new value.
	(expand_compare_and_swap_loop): Likewise.
	(expand_sync_operation): Remove fallback from NAND to AND; invert
	memory operand when expanding from cmpxchg.
	(expand_sync_fetch_operation): Likewise.
	* doc/extend.texi (Atomic Builtins): Fix docs for nand and
	compare-and-swap.
	
	* config/alpha/alpha.c (alpha_split_atomic_op): Invert memory operand
	when implementing NAND.  Fix double-add for AFTER.
	* config/alpha/sync.md (sync_nand<I48MODE>): Invert memory operand.
	(sync_old_nand<I48MODE>, sync_new_nand<I48MODE>): Likewise.
	(sync_compare_and_swap<I48MODE>): Fix compare vs zero.  Return old
	memory value.
	(sync_lock_test_and_set<I48MODE>): Remove extra label and last
	memory barrier.
	
	* config/i386/sync.md (sync_compare_and_swap<IMODE>): Fix pattern
	to return old memory value.
	(sync_compare_and_swap_cc<IMODE>): Likewise.
	
	* config/ia64/ia64.c (ia64_dependencies_evaluation_hook): Early
	return pre-reload.  Don't consider output or anti dependencies.
	* config/ia64/sync.md (IMODE): New.
	(modesuffix): Add QI and HI.
	(memory_barrier): Simplify expansion.
	(sync_compare_and_swap<IMODE>): Use IMODE, not I48MODE.
	(cmpxchg_acq_<IMODE>): Likewise.
	(sync_lock_test_and_set<IMODE>): Likewise.
	(sync_lock_release<IMODE>): Likewise.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8369&r2=2.8370
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/builtins.c.diff?cvsroot=gcc&r1=1.457&r2=1.458
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/optabs.c.diff?cvsroot=gcc&r1=1.272&r2=1.273
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/alpha/alpha.c.diff?cvsroot=gcc&r1=1.418&r2=1.419
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/alpha/sync.md.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/i386/sync.md.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/ia64/ia64.c.diff?cvsroot=gcc&r1=1.355&r2=1.356
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/ia64/sync.md.diff?cvsroot=gcc&r1=1.2&r2=1.3
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/extend.texi.diff?cvsroot=gcc&r1=1.251&r2=1.252
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5374&r2=1.5375
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/ia64-sync-1.c.diff?cvsroot=gcc&r1=1.2&r2=1.3
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/ia64-sync-2.c.diff?cvsroot=gcc&r1=1.2&r2=1.3
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/ia64-sync-3.c.diff?cvsroot=gcc&r1=1.3&r2=1.4
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/ia64-sync-4.c.diff?cvsroot=gcc&r1=1.1&r2=1.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/lib/target-supports.exp.diff?cvsroot=gcc&r1=1.51&r2=1.52