Modifying string length?_(re)

Wed, 30 Apr 1997 02:52:45 +0200

> I would say:  GPC *does* optimize this.  Just type `gpc -O -S foo.pas'
> and look at `foo.s' ...

Hmmm... well, I could not see the effect. I wrote the following test program:

program x;
var s:string[10000];
begin
  s:='';
  s:=s+'a'
end.

I compiled it with "-O3 -S". The resulting code contained two calls to
_memcpy. Another test program that appended characters in a loop obviously
ran in O(n^2). Am I missing something?
-- 
Frank Heckenbach, Erlangen, Germany
heckenb@mi.uni-erlangen.de
Turbo Pascal:   http://www.mi.uni-erlangen.de/~heckenb/programs.htm
Internet links: http://www.mi.uni-erlangen.de/~heckenb/links.htm

Frank Heckenbach (heckenb@mi.uni-erlangen.de)