The mother lode of #BitTwiddling tips (apart from the #book “Hacker’s Delight”, by Henry S. Warren Jr, and “HAKMEM” by the MIT hackers):

“Bit Twiddling Hacks”, Sean Eron Anderson (https://graphics.stanford.edu/~seander/bithacks.html).

On HN: https://hn.algolia.com/?dateRange=all&page=0&prefix=false&query=Bit%20Twiddling%20Hacks&sort=byPopularity&type=story

#Math #Optimization #Compilers

This 👇🏽 is good 👌🏽:

“A Leap Year Check In Three Instructions”, Falk Hüffner (https://hueffner.de/falk/blog/a-leap-year-check-in-three-instructions.html).

Via HN: https://news.ycombinator.com/item?id=43999748

On Lobsters: https://lobste.rs/s/ybjgex/leap_year_check_three_instructions

#Optimization #Assembly #Compilers #GCC #Math #LeapYear #GregorianCalendar #BitTwiddling #Speed

http://compilers.iecc.com/comparch/article/25-05-012 Re: Paper: PR2: Peephole Raw Pointer Rewriting with LLMs for Translating C to Safer Rust #compilers

http://compilers.iecc.com/comparch/article/25-05-011 Re: Paper: PR2: Peephole Raw Pointer Rewriting with LLMs for Translating C to Safer Rust #compilers

Evolution of Rust compiler errors

https://fed.brid.gy/r/https://kobzol.github.io/rust/rustc/2025/05/16/evolution-of-rustc-errors.html

Evolution of Rust compiler errors https://lobste.rs/s/ipfzdh #compilers #rust
https://kobzol.github.io/rust/rustc/2025/05/16/evolution-of-rustc-errors.html

A simple LLVM backend tutorial

https://github.com/optimisan/llvm-mips-backend

Discussions: https://discu.eu/q/https://github.com/optimisan/llvm-mips-backend

#compilers #compsci

http://compilers.iecc.com/comparch/article/25-05-009 Re: Paper: PR2: Peephole Raw Pointer Rewriting with LLMs for Translating C to Safer Rust #compilers
http://compilers.iecc.com/comparch/article/25-05-010 Re: Paper: PR2: Peephole Raw Pointer Rewriting with LLMs for Translating C to Safer Rust #compilers

A leap year check in three instructions https://lobste.rs/s/ybjgex #c #compilers #formalmethods
https://hueffner.de/falk/blog/a-leap-year-check-in-three-instructions.html

http://compilers.iecc.com/comparch/article/25-05-008 Re: Paper: PR2: Peephole Raw Pointer Rewriting with LLMs for Translating C to Safer Rust #compilers

Speculation in JavaScriptCore

This post is all about speculative compilation, or just speculation for short, in the context of the JavaScriptCore virtual machine.

#programming, #plt, #compilers

ZJIT has been merged into Ruby

https://railsatscale.com/2025-05-14-merge-zjit/

Discussions: https://discu.eu/q/https://railsatscale.com/2025-05-14-merge-zjit/

#compilers #compsci #programming #programminglanguages #ruby

One thing I'm learning is that writing detailed unit tests for a parser is incredibly important but also a huge hassle and a massive pain, and even less the fun part than with other types programs I've written

Now is there a bug or did I mess up the lovingly crafted vector of 60 tokens?

#programming #compilers

http://compilers.iecc.com/comparch/article/25-05-007 Re: Paper: PR2: Peephole Raw Pointer Rewriting with LLMs for Translating C to Safer Rust #compilers

http://compilers.iecc.com/comparch/article/25-05-006 Re: Paper: PR2: Peephole Raw Pointer Rewriting with LLMs for Translating C to Safer Rust #compilers

ZJIT has been merged into Ruby https://lobste.rs/s/w9eg2a #compilers #ruby
https://railsatscale.com/2025-05-14-merge-zjit/

Whatay wonderful #list for anyone interested in #PLDI or #compilers 👌🏽:

“Writing That Changed How I Think About PL”, Max Bernstein (https://bernsteinbear.com/blog/pl-writing/).

Via Lobsters: https://lobste.rs/s/v2zmv3/writing_changed_how_i_think_about_pl

On HN: https://news.ycombinator.com/item?id=43980760

#Optimization #Writing #SSA #Parsers

http://compilers.iecc.com/comparch/article/25-05-005 Re: Paper: PR2: Peephole Raw Pointer Rewriting with LLMs for Translating C to Safer Rust #compilers

Well my work computer has to run the antivirus all day (I am forced to use Windows) so now my parser can parse conditionals. Got it in one, too! But I don't like how many nested if statements there are, might need a light refactor.

#programming #compilers

#compilers