Re: [Boost-bugs] [Boost C++ Libraries] #9237: Vectorizer friendly code

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #9237: Vectorizer friendly code
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-10-11 17:45:35

#9237: Vectorizer friendly code
  Reporter: psiha | Owner: johnmaddock
      Type: Bugs | Status: new
 Milestone: To Be Determined | Component: multiprecision
   Version: Boost 1.54.0 | Severity: Optimization
Resolution: | Keywords:

Comment (by johnmaddock):

 Can you please explain what you had in mind here? Note that cpp_int's are
 not simply arrays, so cannot be passed by value using a {{{__vectorcall}}}
 as far as I can see.

 Use of builtin vector types might be interesting, but the only operations
 I can see being easily vectorised are the bitwise operations? I suspect
 the problems may outweigh the benefits here: for example gcc only supports
 array sizes that are powers of 2, I'm not certain the arrays support
 64-bit chunks either...

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