Just a reminder of serious open 3.3 PRs

[Gerald Pfeifer]

On Sun, 6 Apr 2003, Steven Bosscher wrote:
> The two three are serious compile time regressions from 3.2 that should
> be show stoppers for 3.3 according to the GCC release criteria.  .
>
> opt/8361	[3.3/3.4 regression] C++ compile-time performance regression
> This is a 70% slowdown wrt. 3.0.4, and 30% wrt. 3.2.1.  It was blamed
> on garbage collection and other things, but no real analysis was done
> for this problem.  The "official" rule from the release criteria
> states that "A release candidate's compile-time should not exceed
> GCC 2.95.3 by more than 15% ..."  Here we have two times the maximum
> slowdown with respect to the latest official release.

Here is a comparison of how GCC evolved (snapshots around mid of last
week):

		 -O0           -O1    	    -O2	 	 -O3
GCC 3.0.4       27.95         44.52	   56.57	56.48
3.2-branch      29.87 +7%     54.28 +22%   70.95 +25%	75.29 +33%
3.3-branch      29.09 +4%     57.11 +30%   78.99 +40%	81.61 +44%
mainline        27.06         56.09        77.77	82.02

Here we have +30% when comparing against 3.0.4 for -O1, and +40% for -O2!

Gerald
-- 
Gerald "Jerry"   pfeifer@dbai.tuwien.ac.at   http://www.pfeifer.com/gerald/