Forcing SIMD instructions seems like a pretty reasonable, but specialized use-case that would warrant using ASM. But from what I understand, you'd still be usin

Forcing SIMD instructions seems like a pretty reasonable, but specialized use-case that would warrant using ASM. But from what I understand, you'd still be using a compiler for whatever higher-level language (say, C/C++) for most of the work and ASM for the really performance sensitive portions of the code (or when trying to force the usage of some CPU extension). My interpretation of GP was that they exclusively write in ASM, though that may not have been correct.