News for hackers. Stuff that matters.

A comment on LLVM-MOS – Clang LLVM fork targeting the 6502. Parent comment

Re:LLVM-MOS – Clang LLVM fork targeting the 6502 by asiekierka on Monday December 01, 2025 @03:56PM (#46113093)
We already know what the main remaining issue is - LLVM-MOS's register allocator is far from optimal for the 6502 architecture. mysterymath is slowly working on what may become a more sutiable allocator.
[ Parent | on HN ]
Re:LLVM-MOS – Clang LLVM fork targeting the 6502 by HarHarVeryFunny on Monday December 01, 2025 @05:04PM (#46113946)
There is a video below of mysterymath presenting LLVM-MOS where he talks about reserving 32 bytes of zero page to present to LLVM as 16 16-bit registers, to be able to utilize it's register allocator, which does seem a sane approach.

https://www.youtube.com/watch?v=ejbTKtgSZI0

However his github doesn't show any activity on it in the last 2 years.

https://github.com/mysterymath/llvm-mos

[ Parent | on HN ]
Re:LLVM-MOS – Clang LLVM fork targeting the 6502 by mysterymath on Monday December 01, 2025 @06:13PM (#46114825)
Lol? https://github.com/mysterymath/llvm-mos/tree/regalloc
[ Parent | on HN ]
Re:LLVM-MOS – Clang LLVM fork targeting the 6502 by HarHarVeryFunny on Tuesday December 02, 2025 @08:26AM (#46120968)
My bad - was just looking at the main branch.
[ Parent | on HN ]