[Bug middle-end/64247] malloc alignment and -mavx

[Joost.VandeVondele at mat dot ethz.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64247

--- Comment #11 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Dominique d'Humieres from comment #10)
> A few comments:
> 
> (1) Why do you want to use PURE in this context?

because this is a pure procedure ? 

Comment 7 is not too the point (indeed reassociation can happen) as explained
afterwards

The bug here is that the same (serial) binary gives different results from run
to run, as soon as the user enables avx, and there is no way around.

I agree that it would be fixed if there was an option as askin in pr68101. (and
yes, this could help with performance as well).