[gambit-list] Viewing CPS expansion?
Taylor R Campbell
campbell at mumble.net
Fri May 22 15:51:28 EDT 2009
Date: Fri, 22 May 2009 12:45:59 -0700
From: "D.McClain" <dbm at asyrmatos.com>
Okay, you have my attention... let's see that isomorphism in
I leave that as an exercise for the reader.
I have seen my own measurements, and invariably they produce code
that is 30% slower for CPS form than direct form. Perhaps the
compilers producing the actual native code have been tuned to look
for common human idioms and not CPS traits?
The way you say that suggests to me that you are using the *same*
compiler to compare a direct-style program with the same program
converted to continuation-passing style. Unless the compiler is
extremely clever, it will probably generate worse code for the CPS
form of the program, for the reason I explained in my first message.
That's a very different question, however, from the question of how
the use of a CPS intermediate representation affects the code that a
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