Cranelift: cranelift-object: unimplemented relocation Aarch64AdrPrelPgHi21 on aarch64-apple-darwin

[zengyun261]

For the cranelift-object target on aarch64-apple-darwin, if module.declare_anonymous_data or declare_data is called without using Linkage::Preemptible, an Aarch64AdrPrelPgHi21 instruction is generated, causing a relocation error: “not implemented: Aarch64AdrPrelPgHi21”.

[cfallin]

cc @bjorn3 (for cranelift-object)?

I suspect the fix might be as simple as implementing that relocation -- @zengyun261 would you be interested in sending a PR if so?

[zengyun261]

I appreciate the opportunity! However, I'm just a beginner and don't feel confident enough to tackle this issue yet.

[eckertliam]

Hi, I'd like to take a shot at doing this.