[Bug rtl-optimization/55294] Invalid RTL sharing in lower-subreg

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55294



--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-11-12 
21:55:11 UTC ---

I think this is because:

(subreg:SF (reg/v:V2SF 167 [ a ]) 0)))



is invalid to begin with.  Yes we don't reject it but I think we should.