RISC-V: Add testcases for VSETVL PASS 4

RISC-V: Add testcases for VSETVL PASS 4

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-1.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-10.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-11.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-12.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-13.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-14.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-15.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-16.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-17.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-18.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-19.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-2.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-20.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-21.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-22.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-23.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-24.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-25.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-26.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-27.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-28.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-3.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-4.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-5.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-6.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-7.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-8.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_bb_prop-9.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_call-1.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_call-2.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_call-3.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_call-4.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_complex_loop-1.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_complex_loop-2.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-1.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-10.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-11.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-12.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-2.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-3.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-4.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-5.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-6.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-7.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-8.c: New test.
	* gcc.target/riscv/rvv/vsetvl/vlmax_conflict-9.c: New test.