[llvm] [mlir] Verify threadlocal_address constraints (PR #87841)

[Matthias Braun via llvm-commits]

MatzeB wrote:

So this code clears the `ThreadLocal` bit and was probably written before the `llvm.threadlocal_address` intrinsic was introduced: https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp#L295

It happens to work anyway by accident, but needs to adjust all users now... let's see how hard that is...

https://github.com/llvm/llvm-project/pull/87841