[Bug tree-optimization/112324] phiopt fail to recog if (b < 0) max = MAX(-b, max); else max = MAX (b, max) into max = MAX (ABS(b), max)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112324

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> (In reply to Andrew Pinski from comment #3)
> > Note a simple patch to improve phiopt here does not improve the original
> > code in openjpeg.
> > 
> > The reason why is due to the code in phiopt here is only operates on the
> > case where the phi would be the only one. In that case we also have a vop
> > phi which changes which causes the code not to be done.
> 
> But maybe ifcvt could use the same function to do the transformation before
> it does the conversion ...

I will try to figure that out next but I want to get this patch though.