Re: Garbage Collection questions

[Dirk Herrmann]

On Sun, 13 May 2001, Sam Tregar wrote:

> gc.c also had some interesting comments on this question - the
> scm_remember_upto_here functions are a very strange hack indeed!  It seems
> that a sufficiently intelligent optimisizing compiler could defeat this
> mechanism...

It's true that calls to scm_remember_upto_here could be removed by a
compiler _if it knew about the implementation_.  But, since the compiler
does not know about what is actually happening in scm_remember_upto_here,
it has to make worst-case assumptions.  These assumptions require even the
most intelligent compiler to be extremely careful with respect to
optimizations.

Best regards,
Dirk Herrmann