>A fast low-level program was re-written in a high-level language to reduce maintenance costs. These days on HN you usually only hear about the opposite Relate

>A fast low-level program was re-written in a high-level language to reduce maintenance costs. These days on HN you usually only hear about the opposite Related, though not quit the same, is the manner in which the Cog VMs for Squeak/Pharo are developed: "The VMs are developed in Smalltalk, using all the dynamic and reflective facilities of the Squeak/Pharo Smalltalk system. As such, developing in Cog is a delight. The Smalltalk framework comprising the various Cog VMs is translated into C by its Slang component to produce VM source that is combined with platform-specific support sources and compiled via a C compiler to obtain a fast production VM." https://bintray.com/opensmalltalk/vm/cog/202101210320#read https://bintray.com/opensmalltalk/vm/cog/202101210320#read