[llvm] [BPF] Use ".L" local prefix label for basic blocks (PR #95103)

[via llvm-commits]

4ast wrote:

> The "quick fix" broke AMDGPU, so I had to add a new BPF mangling mode that uses "L" for private labels.

wait what ?
Why change ManglingMode ? This doesn't look right. It's still an ELF.
It's really puzzling why default "L" prefix needs this special logic.

@eddyz87 @yonghong-song pls take a look.


https://github.com/llvm/llvm-project/pull/95103