[libc] [llvm] [LLVM] Make the GPU loader utilities an LLVM tool (PR #132096)

[Joseph Huber via llvm-commits]

jhuber6 wrote:

> This seems to add a dependency of LLVM's tools to LLVM's libc which doesn't necessarily build on Darwin. Can we make building the GPU loader conditional on LLVM libc being enabled?

The LLVM libc shared code should work, we'll probably have some more of it showing up in `clang` for constexpr math and float parsing. Is there a specific piece of code that isn't working? It's likely an easy fix.

https://github.com/llvm/llvm-project/pull/132096