[Bug target/23322] [4.1/4.2/4.3 regression] performance regression: global regalloc doesn't split live ranges

ubizjak at gmail dot com gcc-bugzilla@gcc.gnu.org
Thu Dec 13 15:42:00 GMT 2007



------- Comment #16 from ubizjak at gmail dot com  2007-12-13 15:41 -------
Just for fun, I have marked xmm12 - xmm15 as call-used for x86_64 and allocator
did the semi-right thing by using xmm12 for 'result'.


-- 

ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.1/4.2/4.3 regression]    |[4.1/4.2/4.3 regression]
                   |performance regression,     |performance regression:
                   |possibly related to caching |global regalloc doesn't
                   |                            |split live ranges


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23322



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