Superoptimizing an FPU emulator: pushing float emulation to the limit
dverlaeckt80 · hn · 2026-10-16
A detailed write-up on applying superoptimization to an FPU emulator: systematically searching for minimal instruction sequences to squeeze the emulator's hot paths close to theoretical optimum.
The post walks through constructing the search space, verifying equivalence, and trading off correctness against performance—valuable for anyone working on compilers, emulators, or low-level performance engineering.
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