[libc-commits] [libc] [libc] Rework the RPC interface to accept runtime wave sizes (PR #80914)

[Matt Arsenault via libc-commits]

arsenm wrote:

> That seems worth fixing - somewhere in the compiler we know the wavesize (sometimes from clang, sometimes from the backend), we can kill off the intrinsic whenever that information comes to light.

The problem is we always know the wavesize. It's 64. We have no wavesize unknown representation. We get away with this by folding it in codegen 

https://github.com/llvm/llvm-project/pull/80914