XCHG is slow ?
John Rose
john.r.rose at oracle.com
Tue Jul 3 16:29:50 PDT 2012
On Jul 3, 2012, at 4:26 PM, John Rose wrote:
> Isn't "dec %esi" really a REX prefix? — John
No, not if it's two bytes.
Pretty strange. I don't think our nop-generator produces xchg.
— John
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