Sequencing

I watched the Lin Clark video and found it helpful.

This diagram jumped out at me...

I’m still trying to put my finger on how to describe what I see.

It’s something like: The IR is left-to-right-top-to-bottom sequenced like x86 and ARM CPUs. The supposed HLLs - C, C++, Rust - are also sequenced the same way, but don’t need to be.

If Prolog were put on the diagram, we might say that it produces sequenced IR, yet, Prolog itself is not sequenced left-to-right-top-to-bottom.

Nor is HTML, nor is 0D.

The IR must be sequenced, but the HLLs don’t need to be.

By tangling up HLL issues like concurrency and trying to express them in only a left-to-right-top-to-bottom sequenced manner, we are causing trouble for ourselves.