[gambit-list] Poor compilation of do-loops

Taylor R Campbell campbell at mumble.net
Thu Oct 15 12:28:35 EDT 2009

   Date: Thu, 15 Oct 2009 12:22:37 -0400
   From: Bradley Lucier <lucier at math.purdue.edu>

   In other words, this mechanical translation of do loops to named lets
   (following the known continuation when each loop is finished) more than
   doubles the speed of the routine.

   I've trained myself to write loops as named lets, but other people have
   not yet been assimilated to modify how they write code to get around the
   oddities of Gambit's compiler.  Do loops are very popular in numerical
   code; please add a transformation like this to the compiler.

I'm puzzled: how is DO implemented in Gambit, if not as a macro that
performs precisely that transformation?

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