Develop a suite of RVV-optimized code that can be applied to various vector lengths (VLENs).

[tingboliao]

Is there a plan to develop a suite of RVV-optimized code that can be applied to various vector lengths (VLENs), rather than developing RVV-optimized code specific to certain VLENs for each processor with built-in vectors, , such as C910, X280, etc., shown as below in the Makefile.riscv64 file?

[martin-frbg]

see #4050 - RVV length specificity was a necessary evil while the standards were maturing and individual physical implementations were key

[tingboliao]

see #4050 - RVV length specificity was a necessary evil while the standards were maturing and individual physical implementations were key

Thanks

[martin-frbg]

(C910V will have to remain a separate target as it only supports RVV 0.7.1)