RISC-V: Add vmacc vv c++ api tests
gcc/testsuite/ChangeLog:
* g++.target/riscv/rvv/base/vmacc_vv-1.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv-2.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv-3.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_mu-1.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_mu-2.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_mu-3.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_tu-1.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_tu-2.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_tu-3.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_tum-1.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_tum-2.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_tum-3.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_tumu-1.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_tumu-2.C: New test.
* g++.target/riscv/rvv/base/vmacc_vv_tumu-3.C: New test.
15 files changed: