[llvm] [SPIRV][NFC] Refactor pointer creation in GlobalRegistery (PR #134429)

[Thurston Dang via llvm-commits]

thurstond wrote:

> LLVM Buildbot has detected a new failure on builder `ppc64le-lld-multistage-test` running on `ppc64le-lld-multistage-test` while building `llvm` at step 12 "build-stage2-unified-tree".
> 
> Full details are available at: https://lab.llvm.org/buildbot/#/builders/168/builds/10735
> 
> Here is the relevant piece of the build log for the reference

Fixed-forward with a tiny change (remove default case) in https://github.com/llvm/llvm-project/commit/83f831d46f46e9f68bec9b7a6592f678c8ba61ab :-)


https://github.com/llvm/llvm-project/pull/134429