Compiling with -O is 30 times slower than with -Onot
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
Serge
Trac metadata
Trac field | Value |
---|---|
Version | 6.8.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | Unknown |
Architecture | Unknown |