[llvm] [BPF] Support Jump Table (PR #149715)

[via llvm-commits]

eddyz87 wrote:

> One more thing to check, all labels e.g. BPF.JT.0.0 is global. What if there are two bpf progs both having BPF.JT.0.0 and they need to be linked together? Does libbpf can handle this properly? We need to double check with libbpf for this.

Good point, I think libbpf linker should be modified to take care of this.

https://github.com/llvm/llvm-project/pull/149715