[llvm] [GlobalMerge] Add MinSize feature to the GlobalMerge Pass. (PR #93686)

[Craig Topper via llvm-commits]

topperc wrote:

> > The intent here is for global merge to not prevent small variables from being placed in sdata or sbss.
> 
> GlobalMerge already clusters globals into a couple of sets, would introduce a "small" vs "large" set solve the same problem? (From a theoretical perspective. Not asking for a change in implementation at this time.)

You'd need many sets. You don't want any "small" cluster to exceed to small data limit if you want it to be eligible for GP relaxation.


https://github.com/llvm/llvm-project/pull/93686