[llvm] [WebAssembly] Fix lowering of (extending) loads from addrspace(1) globals (PR #155937)

[via llvm-commits]

QuantumSegfault wrote:

Alright, #157161 is underway.

But that doesn't solve our issues here. I liked @sparker-arm's idea, but I'm not sure that's feasible.

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I had no idea this would end up being such a rabbit hole.

https://github.com/llvm/llvm-project/pull/155937