[compiler-rt] [tsan][riscv] add Go race detector support for RISC-V sv39 VMA (PR #154701)

[Joel Sing via llvm-commits]

4a6f656c wrote:

> Please enlarge the meta region

Thanks for the detailed review - I've reworked the regions, increasing the exec/heap to 60GB and reducing the shadow to 128GB (with 32GB for the meta region). PTAL.

https://github.com/llvm/llvm-project/pull/154701