[llvm] GlobalsModRef, ValueTracking: Look through threadlocal.address intrinsic (PR #88418)

[Matthias Braun via llvm-commits]

MatzeB wrote:

> Test the actually desired effect on AA you want from this.

Dropping unittests, there were already IR tests added in llvm/test/Analysis/GlobalsModRef/nonescaping-noalias.ll 

https://github.com/llvm/llvm-project/pull/88418