HP did the same when migrating away from the PA RISC architecture.
IIRC as part of their testing they set it up so it would ingest, recompile and output code for the same architecture, and found that it could produce speed improvements due to context awareness.
IIRC as part of their testing they set it up so it would ingest, recompile and output code for the same architecture, and found that it could produce speed improvements due to context awareness.