[Bug rtl-optimization/15023] -frename-registers is buggy and slow

[danglin at gcc dot gnu dot org]

-- 
Bug 15023 depends on bug 22472, which changed state.

Bug 22472 Summary: [4.1 regression] testsuite failure 
gcc.c-torture/compile/930621-1.c -O3 -funroll-loops
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22472

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15023