[Bug target/50164] [IRA, 4.7 Regression] Performance degradation due to increased memory instructions count

[enkovich.gnu at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50164

Ilya Enkovich <enkovich.gnu at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #11 from Ilya Enkovich <enkovich.gnu at gmail dot com> 2011-10-28 
10:10:42 UTC ---
Initially problem was caused by movzbl cost value for Atom. Low cost of movzbl
made IRA keep frequently used byte value on the stack and assign register for
int value. Change cost model resolves the problem and it has been fixed in
revision 179999.