On: A technical history of Acorn Computers

[sillywalk]

> recompile and output code for the same architecture, and found that it could produce speed improvements due to context awareness.

That sounds like HP's Dynamo.

https://dl.acm.org/doi/pdf/10.1145/358438.349303

[eftpotrm → sillywalk]

That's it! Thanks :-)