[llvm] [IPO] Added attributor for identifying invariant loads (PR #141800)

[via llvm-commits]

zGoldthorpe wrote:

> > No, this file is target agnostic so all target related stuff can be here. If anything target related needed, it has to go through TTI hook.
> 
> Yeah, that's what I meant. `TTI::isGlobalConstantsAddressSpace(unsigned)` if such a thing doesn't already exist

I don't think such a thing already exists, but I feel like adding such support would make more sense as a separate PR. I could be wrong, though.

https://github.com/llvm/llvm-project/pull/141800