rs6000.md (sync_add<mode>_internal, [...]): Use "bne- $-xxx" rather than local labels.

rs6000.md (sync_add<mode>_internal, [...]): Use "bne- $-xxx" rather than local labels.

	* config/rs6000/rs6000.md (sync_add<mode>_internal,
	sync_addshort_internal, sync_sub<mode>_internal, sync_andsi_internal,
	sync_anddi_internal, sync_boolsi_internal, sync_booldi_internal,
	sync_boolc<mode>_internal, sync_boolc<mode>_internal2,
	sync_boolcc<mode>_internal, sync_lock_test_and_set<mode>): Use
	"bne- $-xxx" rather than local labels.
	(sync_lock_release<mode>): Add second operand.
	(lwsync): Use .long rather than a more meaningful opcode.
	* doc/md.texi (Standard Names): Add description of second
	parameter to sync_lock_test_and_set.

From-SVN: r98602