[Bug target/49057] scheduling difference of subs cause 80% performance difference

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49057

Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2011.07.24 14:27:01
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2011-07-24 14:27:01 UTC ---
You haven't said what CPU this is for, what options you used when compiling,
and you haven't provided a complete testcase.

Are you *absolutely* sure this is the only difference? because I find that hard
to believe.  More likely is that the loop has a different alignment, or there
is some other, secondary, issue that you've exposed.