Hackers' Pub

Syntax	Description	Examples
`"` keyword `"`	Finds the string within quotes, including spaces. Case-insensitive. (Escape quotes inside with `\"`)	`"Hackers' Pub"`
`from:` handle	Finds content written by the specified user.	`from:hongminhee` `from:hongminhee@hollo.social`
`lang:` ISO 639-1	Finds content written in the specified language.	`lang:en`
`#` tag	Finds content with the specified tag. Case-insensitive.	`#HackersPub`
condition condition	Finds content that satisfies both conditions on either side of the space (logical AND).	`"Hackers' Pub" lang:en`
condition `OR` condition	Finds content that satisfies at least one of the conditions on either side of the OR operator (logical OR).	`#HackersPub OR "Hackers' Pub" lang:en`
`(` condition `)`	Combines the operators within the parentheses first.	`(#HackersPub OR "Hackers' Pub" OR "Hackers Pub") lang:en`

matt godbolt @mattgodbolt@hachyderm.io

12/2/2025, 11:29:59 AM

Public

Day 2 of Advent of Compiler Optimisations!

How do you add two integers on x86-64? You might expect `add`, but the compiler has other ideas—it uses an instruction designed for calculating memory addresses instead! Why would it choose this unusual approach, and what advantages does it bring? The answer reveals something fascinating about x86's quirky architecture.

#AoCO2025

Addressing the adding situation — Matt Godbolt’s blog

We learn why adding on x86 isn't as obvious as you might think

xania.org

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