I wouldn't want to support it, but similar things have been done before. Alexia Massalin's Synthesis[0] (pdf) operating system did JIT-like optimizations for s

I wouldn't want to support it, but similar things have been done before. Alexia Massalin's Synthesis[0] (pdf) operating system did JIT-like optimizations for system calls. Here's a LWN article[1] with a summary. Anyone who's interested in operating systems should read this thesis. HP's Dynamo[2] runtime optimizer did JIT-like optimizations on PA-RISC binaries; it was released in 2000. DynamoRIO[3] is an open source descendant. Also, DEC had a similar tool for the Alpha, but I've forgotten the name. [0] https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=1467a614509e49995a213a138f86c81b43f4cd56 https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&d... [1] https://lwn.net/Articles/270081/ https://lwn.net/Articles/270081/ [2] https://dl.acm.org/doi/pdf/10.1145/349299.349303 https://dl.acm.org/doi/pdf/10.1145/349299.349303 [3] https://dynamorio.org/ https://dynamorio.org/