[DataLayout] Introduce DataLayout::getPointerAddressSize(AS)#137412

arichardson wants to merge 5 commits intomainllvm/llvm-project:mainfrom

users/arichardson/spr/datalayout-introduce-datalayoutgetpointeraddresssizeasllvm/llvm-project:users/arichardson/spr/datalayout-introduce-datalayoutgetpointeraddresssizeasCopy head branch name to clipboard