abadideaFeb 12
I can't stop thinking about the LLM-generated compiler that passes all the unit tests but emits inner loops that benchmark over 150,000x slower than a gcc debug build. I couldn't possibly have intentionally come up with such a funny demonstration of the point of genuine expertise https://harshanu.space/en/tech/ccc-vs-gcc/
CCC vs GCC

A Guide to comparing Claude Code Compiler with GCC

Harshanu
Show threadErin 💽✨Feb 12

@0xabad1dea It’s so diabolically bad I don’t know how you do it. We’re not talking about gcc -O3 here, which does some truly herculian things, we’re talking about GCC with basically every optimization disabled. I don’t understand how the generated code wouldn’t run within a finite constant factor of gcc here, you just have to spit out the dumbest possible assembly for a given input source.

You just know there’s some absolutely horrific workarounds going in here because it’s apocalyptically bad in utterly incomprehensible ways.

Show threadErin 💽✨
@0xabad1dea …the more i ruminate on it the more i think digging into the output (which is rather difficult given the poor quality and lack of debugging symbols) would find that it’s done something like sometimes implementing multiplication iteratively or something. it’s really astoundingly bad.
Feb 12 at 2:41pmWeb
Show threadbig awoo notationFeb 12
@[email protected] @0xabad1dea looking at the disassembly makes me think it has invented 6502-64 /j