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[AArch64] Add alternative division and sqrt methods

merged 1 commit into from Mar 21, 2020


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@shibatch shibatch commented Mar 18, 2020

With this patch, alternative division and sqrt can be chosen by specifying -DENABLE_ALTDIV=TRUE -DENABLE_ALTSQRT=TRUE as cmake options.
The alternative methods use combinations of FMA operations to compute division and sqrt.
These methods could possibly be beneficial for micro-architectures on which the corresponding instructions are non-pipelined and have long latencies.

@shibatch shibatch requested a review from fpetrogalli Mar 18, 2020
@shibatch shibatch merged commit 1ba1836 into master Mar 21, 2020
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@shibatch shibatch deleted the Add_alt_div_sqrt branch Mar 21, 2020
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