i386.md (general_sext_operand): New mode attr.

i386.md (general_sext_operand): New mode attr.

	* config/i386/i386.md (general_sext_operand): New mode attr.
	(addv<mode>4, subv<mode>4, mulv<mode>4): If operands[2] is CONST_INT,
	don't generate (sign_extend (const_int)).
	(*addv<mode>4, *subv<mode>4, *mulv<mode>4): Disallow CONST_INT_P
	operands[2].  Use We constraint instead of <i> and <general_sext_operand>
	predicate instead of <general_operand>.
	(*addv<mode>4_1, *subv<mode>4_1, *mulv<mode>4_1): New insns.
	* config/i386/constraints.md (We): New constraint.
	* config/i386/predicates.md (x86_64_sext_operand,
	sext_operand): New predicates.

From-SVN: r208824