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c++ Programming Glossary: xmm0

Why is one loop so much slower than two loops?

http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops

is repeated about five times in the full program movsd xmm0 mmword ptr edx 18h addsd xmm0 mmword ptr ecx 20h movsd mmword.. in the full program movsd xmm0 mmword ptr edx 18h addsd xmm0 mmword ptr ecx 20h movsd mmword ptr ecx 20h xmm0 movsd xmm0.. 18h addsd xmm0 mmword ptr ecx 20h movsd mmword ptr ecx 20h xmm0 movsd xmm0 mmword ptr esi 10h addsd xmm0 mmword ptr eax 30h..