[libc-commits] [libc] [libc] Compile the GPU functions with '-fconvergent-functions' (PR #70229)

[Jon Chesterfield via libc-commits]

https://github.com/JonChesterfield approved this pull request.

Sigh. Yes, convergent is the right default for gpu compilation, but it is not the default. This will fix various optimisation dependent weirdness in libc.

https://github.com/llvm/llvm-project/pull/70229