[PATCH] RISC-V: Add vaaddu.vv C++ api tests

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

[PATCH] RISC-V: Add vaaddu.vv C api tests

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