LLVM split functions in hot/cold regions optimization (PGO)

[Jon Degenhardt]

On Monday, 31 August 2020 at 23:31:31 UTC, Johan wrote:
> LLVM gained an interesting new optimization pass to split 
> functions in hot/cold regions based on PGO profile data:
> https://reviews.llvm.org/rG94faadaca4e

Very interesting. Will LDC gain this optimization pass simply by 
upgrading the LLVM version, or will it be necessary to update 
LDC's PGO as well?