Adding a MOV shifts subsequent instructions and can relieve deleterious aliasing in the branch prediction buffer. Here's a full explanation (with references an

Adding a MOV shifts subsequent instructions and can relieve deleterious aliasing in the branch prediction buffer. Here's a full explanation (with references and links to the diagnostic tools): http://stackoverflow.com/a/17906589/1001643 http://stackoverflow.com/a/17906589/1001643