[dzaima]

> there's an open bug ticket noting that it doesn't protect against contraction (https://github.com/llvm/llvm-project/issues/91674).

Huh. ¯\_(ツ)_/¯

I didn't really mean the loop thing as much of a problem for the goal of reproducibility (easy enough to just not explicitly request a vector math library).

aarch32 NEON does have an implicit FTZ, and, yeah, such are annoying; though gcc and clang don't use it without -ffast-math (https://godbolt.org/z/3b11dW559)

I do agree that getting consistent results would definitely make sense as the default.