RISC-V: Add integer binary vv C/C++ API support

RISC-V: Add integer binary vv C/C++ API support

Add vector intrinsic for integer binary operation, but only vector to
vector form.

gcc/ChangeLog:

	* config/riscv/constraints.md (vj): New.
	(vk): Ditto
	* config/riscv/iterators.md: Add more opcode.
	* config/riscv/predicates.md (vector_arith_operand): New.
	(vector_neg_arith_operand): New.
	(vector_shift_operand): New.
	* config/riscv/riscv-vector-builtins-bases.cc (class binop): New.
	* config/riscv/riscv-vector-builtins-bases.h: (vadd): New.
	(vsub): Ditto.
	(vand): Ditto.
	(vor): Ditto.
	(vxor): Ditto.
	(vsll): Ditto.
	(vsra): Ditto.
	(vsrl): Ditto.
	(vmin): Ditto.
	(vmax): Ditto.
	(vminu): Ditto.
	(vmaxu): Ditto.
	(vmul): Ditto.
	(vdiv): Ditto.
	(vrem): Ditto.
	(vdivu): Ditto.
	(vremu): Ditto.
	* config/riscv/riscv-vector-builtins-functions.def (vadd): New.
	(vsub): Ditto.
	(vand): Ditto.
	(vor): Ditto.
	(vxor): Ditto.
	(vsll): Ditto.
	(vsra): Ditto.
	(vsrl): Ditto.
	(vmin): Ditto.
	(vmax): Ditto.
	(vminu): Ditto.
	(vmaxu): Ditto.
	(vmul): Ditto.
	(vdiv): Ditto.
	(vrem): Ditto.
	(vdivu): Ditto.
	(vremu): Ditto.
	* config/riscv/riscv-vector-builtins-shapes.cc (struct binop_def): New.
	* config/riscv/riscv-vector-builtins-shapes.h (binop): New.
	* config/riscv/riscv-vector-builtins.cc (DEF_RVV_I_OPS): New.
	(DEF_RVV_U_OPS): New.
	(rvv_arg_type_info::get_base_vector_type): Handle
	RVV_BASE_shift_vector.
	(rvv_arg_type_info::get_tree_type): Ditto.
	* config/riscv/riscv-vector-builtins.h (enum rvv_base_type): Add
	RVV_BASE_shift_vector.
	* config/riscv/riscv.cc (riscv_print_operand): Handle 'V'.
	* config/riscv/vector-iterators.md: Handle more opcode.
	* config/riscv/vector.md (@pred_<optab><mode>): New.