GCC Compile-Time Regressions

Ziemowit Laski zlaski@apple.com
Thu Feb 13 20:57:00 GMT 2003


Just for completeness, I thought I'd share my measurements for release 
branches other than 3.3.x.

Currently, there is some controversy as to whether 3.4/TOT is actually 
slower than 3.3.  My measurements
consistently confirm this thesis, although some folks apparently found 
the reverse to be true.  A suggestion
has been made (on this list, I believe) that 3.4 may be slower on small 
files but faster on big ones.  So,
is my test case considered small or large? The structparser.cpp file 
itself is indeed very small, but it
pulls in a lot of Qt and STL gunk via #include and balloons up to 1 Mb, 
which I would no longer consider
small.  So, if someone (other than me) could do some systematic 
3.3-vs-3.4 measurements and post the results
here, that would be great.

--Zem

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Ziemowit Laski                 1 Infinite Loop, MS 301-2K
Mac OS X Compiler Group        Cupertino, CA USA  95014-2083
Apple Computer, Inc.           +1.408.974.6229  Fax .5477


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