[PATCH] RISC-V: Add vssra.vx C++ API tests

From: Ju-Zhe Zhong gcc/testsuite/ChangeLog: * g++.target/riscv/rvv/base/vssra_vx-1.C: New test. * g++.target/riscv/rvv/base/vssra_vx-2.C: New test. * g++.target/riscv/rvv/base/vssra_vx-3.C: New test. * g++.target/riscv/rvv/base/vssra_vx_mu-1.C: New test.

[PATCH] RISC-V: Add vssra.vx C API tests

From: Ju-Zhe Zhong gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/base/vssra_vx-1.c: New test. * gcc.target/riscv/rvv/base/vssra_vx-2.c: New test. * gcc.target/riscv/rvv/base/vssra_vx-3.c: New test. * gcc.target/riscv/rvv/base/vssra_vx_m-1.c: New test. *