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The Fil-C Optimized Calling Convention

65 points

by pizlonator

2 days ago

| past

| 4 comments

| fil-c.org

| HN

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dvt

1 hour ago

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Great video here by the man himself: https://x.com/filpizlo/status/1976831020566798656

From my cursory glance, the real magic (InvisiCaps) appears to be a unique take on fat pointers to track types, access rights, etc. Pretty clever, and the website is a great technical read.

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aniviacat

1 hour ago

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> Fil-C is a personal passion project by Filip Pizlo.

Do I understand correctly that this project is based on the work of just one person, Filip Pizlo? If so, that's amazing.

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pizlonator

1 hour ago

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Mostly. A handful of people have made some very nice contributions though

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rurban

1 hour ago

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So you just need safe unicode identifiers I guess, fixing the longstanding unicode C11 spec bug, which made identifiers unidentifiable. Restricting to ASCII would be safest. In my rcc compiler I use my libu8ident

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ummonk

2 hours ago

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Interesting project in general. I wonder whether it could be adapted to behave reasonably without relying on threading. E.g. run the GC only when *alloc is called.

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StilesCrisis

1 hour ago

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The GC runs on a different thread anyway.

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turkeyboi

42 minutes ago

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You even read the comment you’re responding to? They’re saying no threads.

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tines

39 minutes ago

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Pretty interesting, but what’s the reason of being for Fil-C?