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142 points chmaynard | 1 comments | 31 Oct 24 10:45 UTC | HN request time: 0.208s | source

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OnlyMortal ◴[06 Nov 24 18:00 UTC] No.42066401[source]▶

Back in the day on the Mac, the order of source files in your project would determine locality in the binary.

If memory serves, this was with MPW C or maybe CodeWarrior.

You could see the jump (jmp) instructions use short jumps rather than long ones.

1. rurban ◴[06 Nov 24 18:42 UTC] No.42067152[source]▶

This is still relevant. I had big success in writing an order optimizer for perl5

Kernel optimization with BOLT (binary optimization and layout tool)