Zero length call and Intel Atom   Leave a comment

From Intel Blogs

… A “zero length call” uses the attribute of the call instruction to push the immediate instruction pointer on to the stack and then pops off that address into a register…..

….The Atom Processor depends on matching calls and returns as part of its branch prediction algorithm and will likely miss-predict on the next return instruction….

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Posted October 26, 2010 by jsusmer in Uncategorized

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