[bigstrat2003]

I think a production grade compiler not only can, but must, leave performance on the table when the cost is correctness (unless the performance gain is incredibly high and the correctness loss is minimal). Correctness is not all important, but it is the most important thing. Unfortunately, compiler writers do not agree and they do silly things like "let's assume UB cannot ever happen and optimize based on that".

[auselen]

Correctness is already a must, how did you arrive to this?

[kragen]

if only the gcc and llvm maintainers, and c standard authors, agreed with you

[auselen]

I mean these compilers build all these SW stacks, even this very browser I’m using, where are these correctness issues you are talking about?

[kragen]

there are new items in this category every day, but https://blog.cr.yp.to/20240803-clang.html is noteworthy

[fulafel]

This is about optimizations affecting timing of cryptographic code, not correctness of computation, the argument for calling this a correctness bug in the compiler is quite weak I think.

[auselen]

Eh https://news.ycombinator.com/item?id=41146860

[kragen]

yes, that