optimization/9279: [3.2 regression] [Sparc] combine bug

[Eric Botcazou]

>     The fix introduces a performance regression for PowerPC (and possibly
> other platforms) on the 3.2 branch.

Now reverted for this reason on the 3.2 branch so GCC 3.2.2 will ship with 
the bug.

-- 
Eric Botcazou