[Bug rtl-optimization/53176] [4.8 Regression] gcc.target/i386/movbe-2.c and gcc.dg/lower-subreg-1.c

[rsandifo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53176

--- Comment #11 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2012-05-02 22:36:28 UTC ---
(In reply to comment #8)
> Actually, I think that's what rtlanal.c:rtx_cost should be changed to do, for
> the cases where the targetm.rtx_costs function returns false.

Yeah, I'd wondered about that too.  We've tended to make
targets fend for themselves when it comes to doubleword
ANDs, ADDs, etc., but I suppose that doesn't mean we should...