[Bug target/63679] [5.0 Regression][AArch64] Failure to constant fold.

[belagod at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63679

--- Comment #11 from Tejas Belagod <belagod at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #8)
> (In reply to Tejas Belagod from comment #7)
> > I tried this, but it still doesn't seem to fold for aarch64.
> > 
> > So, here is the DOM trace for aarch64:
> > 
> > Optimizing statement a = *.LC0;
> 
> Why do we get LC0 in the first place?  It seems like it is happening because
> of some cost model issue with MOVECOST.
> 

Can the cost model affect something as early as gimple?