About 1988-1990, There was a Metaware HighC (and C++) compiler, which had platform-coverage comparable to GNU - RISCs, intel x86, etc. With own "yield" extension (yeah, generators/coroutines, back then), and few others. Maybe the first locally And globally heavily optimizing one.. the assembly code produced was looking rather weird But was faster and/or smaller than others.

no idea what happened to that company