[Bug rtl-optimization/113597] [14 Regression] aarch64: Significant code quality regression since r14-8346-ga98d5130a6dcff

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113597

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Alex Coplan from comment #7)
> I expect the store pairs come from memcpy lowering/expansion in the aarch64
> backend, that is the only way we get store pairs so early in the RTL
> pipeline IIRC.

In this case, memset is more likely.  

Either:
for (int i = 0; i < j; i++)
    m[i] = vdupq_n_f32(0.F);
Or
for (int i = 0; i < l; i++)
    n[i] = vdupq_n_f32(0.F);