id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,os,architecture,failure,difficulty,testcase,blockedby,blocking,related
1875,Compiling with -O is 30 times slower than with -Onot,simonpj,,"This is a performance bug.  In 6.8.1, compiling Serge's !DoCon package, the ""!DoCon test"" does build under -O and -O2, but it builds 30 times slower that under  -Onot.
As a result:  install.txt  recommends  -Onot  for ""making"" the test.

The following two points are not bugs, but maybe, need investigation,
I do not know.

 * The size of the .a library for docon under -O remains almost 3/2 larger than in  6.6.1.
 * -O remains a little better than -O2 for `making' docon, -O2 does not increase the code performance for docon.

All this can be reproduced by downloading
             http://www.botik.ru/pub/local/Mechveliani/docon/2.11-pre/

Serge",bug,closed,normal,6.10.1,Compiler,6.8.1,fixed,performance,,Unknown/Multiple,Unknown/Multiple,Compile-time performance bug,Unknown,,,,