[Bug target/39942] Nonoptimal code - leaveq; xchg %ax,%ax; retq

[hjl dot tools at gmail dot com]

------- Comment #33 from hjl dot tools at gmail dot com  2009-05-14 18:37 -------
(In reply to comment #20)
> Instruction decoders generally operate on whole cache-lines, so 16-byte chunk
> very very likely refers to a cache-line.
> 

That is true. For Intel CPUs, "16-bytes chunk" means memory range XXX0 - XXXF.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39942