* config/sh/sh.h (CONST_OK_FOR_K16): Define.
	(CONST_OK_FOR_K): Add CONST_OK_FOR_K16 case.
	(EXTRA_CONSTRAINT_C16): Remove.
	(EXTRA_CONSTRAINT_Css, EXTRA_CONSTRAINT_Csu): Define.
	(EXTRA_CONSTRAINT_C): Remove EXTRA_CONSTRAINT_C16 case and add
	EXTRA_CONSTRAINT_Css and EXTRA_CONSTRAINT_Csu cases.
	* config/sh/sh.c (print_operand): Handle unsigned 16-bit symbolic
	constants of SHmedia.  Handle nested constant expressions of
	SHmedia correctly.
	(andcosts): Fix the costs for SHmedia constants.
	(sh_rtx_costs): Take account of outer_code for SHmedia constants.
	* config/sh/sh.md (*movsi_media): Use Css constraint instead of C16.
	(*movsi_media_nofpu, *movqi_media, *movhi_media): Likewise.
	(*movdi_media, *movdi_media_nofpu, movv8qi_i, movv2hi_i): Likewise.
	(movv4hi_i, movv2si_i):	Likewise.
	(movsi_const): Adjust the second operand of ior so to match with
	the Csu constraint.
	(movdi_const, movdi_const_32bit): Likewise.
	(movdi_const_16bit+1): Don't sign-extend LOW.
	(movdi_const_16bit+2): Likewise.  Remove the zero_extend and truncate
	step.
	(*double_shori): Fix the split condition.  Use GEN_INT instead
	of get_int_mode calls.  Mask lower 16-bit of the argument of
	the last GEN_INT.
	(sym2GOTPLT): Remove.
	(symGOTPLT2reg): Replace gen_sym2GOTPLT with gen_rtx_CONST and
	gen_rtx_UNSPEC.
	* config/sh/predicates.md (arith_operand): Use EXTRA_CONSTRAINT_Css
	instead of EXTRA_CONSTRAINT_C16.


Co-Authored-By: Kaz Kojima <kkojima@gcc.gnu.org>

From-SVN: r109471