Agner`s CPU blog

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Function libraries and tools updated
Author: Agner Date: 2015-03-05 11:37
Andysem wrote:
wondering why ERMSB (the improved "rep movsb" in Ivy Bridge and later) is not used?
I have tested it and the AVX2 implementation is faster in most cases.
Unrolling loops takes extra space in the code cache and rarely gives any significant improvement in speed.
 
thread Function libraries and tools updated new - Agner - 2013-10-07
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replythread Function libraries and tools updated new - Yury Hushchyn - 2014-10-17
last reply Function libraries and tools updated new - Agner - 2014-10-18
last replythread Function libraries and tools updated new - Andysem - 2015-03-05
last reply Function libraries and tools updated - Agner - 2015-03-05