[Bug tree-optimization/100253] [10/11/12 Regression] wrong code with -O2 -fno-tree-bit-ccp -ftree-slp-vectorize (unaligned movdqa)

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100253

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Hongtao.liu from comment #3)
> > I think SLP did not mark the load as unaligned even though it knows it is
> > one:
> But gimple tree is marked as aligned.

Right and we are saying the same thing just differently. SLP is what needs to
mark the load as unaligned as it creates the (gimple) load in the first place.