rs6000.c (mask_operand): Rewrite without bit-shifting loop.

rs6000.c (mask_operand): Rewrite without bit-shifting loop.

	* config/rs6000/rs6000.c (mask_operand): Rewrite without
	bit-shifting loop.
	(mask64_operand): Likewise.
	(rldic_operand): Delete.
	(includes_lshift64_p): Delete.
	(includes_rldic_lshift_p): New function.
	(includes_rldicr_lshift_p): New function.
	(print_operand): Don't call rldic_operand in case 'W'.
	* config/rs6000/rs6000-protos.h (rldic_operand): Remove.
	(includes_lshift64_p): Remove.
	(includes_rldic_lshift_p): Declare.
	(includes_rldicr_lshift_p): Declare.
	* config/rs6000/rs6000.h (PREDICATE_CODES): Remove rldic_operand.
	* config/rs6000/rs6000.md <ashldi3_internal 64 bit patterns>:
	Replace match_operand rldic_operand predicate with
	const_int_operand.  Replace includes_lshift64_p condition with
	includes_rldic_lshift_p.
	<ashldi3_internal 64 bit rldicr patterns>: New.

From-SVN: r45192