RISC-V: Add testcase for VSETVL PASS

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/base/scalar_move-1.c: New test.
	* gcc.target/riscv/rvv/base/scalar_move-2.c: New test.
	* gcc.target/riscv/rvv/base/scalar_move-3.c: New test.
	* gcc.target/riscv/rvv/base/scalar_move-4.c: New test.
	* gcc.target/riscv/rvv/base/scalar_move-5.c: New test.
	* gcc.target/riscv/rvv/base/scalar_move-6.c: New test.
	* gcc.target/riscv/rvv/base/scalar_move-7.c: New test.
	* gcc.target/riscv/rvv/base/scalar_move-8.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-100.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-101.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-78.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-79.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-80.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-81.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-82.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-83.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-84.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-85.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-86.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-87.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-88.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-89.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-90.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-91.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-92.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-93.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-94.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-95.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-96.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-97.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-98.c: New test.
	* gcc.target/riscv/rvv/vsetvl/avl_single-99.c: New test.