[Bug target/53087] [powerpc] Poor code from cstore expander

[segher at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53087

Segher Boessenkool <segher at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |segher at gcc dot gnu.org

--- Comment #12 from Segher Boessenkool <segher at gcc dot gnu.org> 2012-09-26 05:42:26 UTC ---
With the abs patterns gone, and the ne0 patterns fixed, mainline
now generates

        li 10,1
        lis 9,0xcf8
        ori 9,9,63
        sld 3,10,3
        and 3,3,9
        addic 9,3,-1
        subfe 3,9,3
        blr

which is the expected code.  It would be nice if we could get
the 4.1 code back, but that's a separate problem (and not a
target problem I think).