[Bug middle-end/37364] [4.4 Regression] IRA generates ineffient code

[hjl dot tools at gmail dot com]

------- Comment #3 from hjl dot tools at gmail dot com  2008-09-04 17:43 -------
The problem may be in IRA_COVER_CLASSES. -mtune=core2 turns on
TARGET_INTER_UNIT_MOVES, which means move between mmx and 64bit
integer registers is cheaper than load/store. But IRA doesn't
handle it properly.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37364