alpha.md (IMODE): New mode iterator.

	* config/alpha/alpha.md (IMODE): New mode iterator.
	(I124MODE): Ditto.
	(I248MODE): Ditto.
	(modesuffix): Handle QI and HI modes.
	(zero_extendqi<mode>2): Macroize insn from zero_extendqi{hi,si,di}2
	using I248MODE mode iterator.
	(zero_extendhi<mode>2): Macroize insn from zero_extendhi{si,di}2
	using I48MODE mode iterator.
	(andnot<mode>3): Macroize insn from andnot{si,di}3 using
	I48MODE mode iterator.
	(ins<modesuffix>l_const): Macroize insn from ins{b,w,l}l_const
	using I248MODE mode iterator.
	(ins<modesuffix>l): Macroize insn from ins{b,w,l}l
	using I248MODE mode iterator.
	(*mov<mode>cc_internal): Macroize insn from
	*mov{qi,hi,si,di}cc_internal using IMODE mode iterator.
	(*mov<mode>cc_lbc): Macroize insn from
	*mov{qi,hi,si,di}cc_lbc using IMODE mode iterator.
	(*mov<mode>cc_lbs): Macroize insn from
	*mov{qi,hi,si,di}cc_lbs using IMODE mode iterator.
	(mov<mode>cc): Macroize insn from mov{si,di}cc_lbs
	using I48MODE mode iterator.

From-SVN: r192379