Compiler Analysis: 3.3, 3.4, or tree-ssa?

[Scott Robert Ladd <coyote@coyotegulch.com>]

A couple months ago, I gave a preliminary report on my project to 
analyze the effectiveness of gcc optimizations via an evolutionary 
algorithm. At that time, the responses I received lead me to spend time 
reworking my research code into soemthing a bit more formal and modular.

Where the original framework was gcc and Intel specific, the current 
program is both compiler and platform independent.

Now that I'm ready to publish Acovea (Analysis of Compiler Options Via 
Evolutionary Algorithm), I'm wondering which version of gcc I should 
analyze.

3.3.x is the current release; analyzing it would provide a baseline, but 
any discoveries are unlikely to have much impact on 3.3's development at 
this point.

3.4 is in active development, and is the subject of my current tests. 
I've discovered a number of anomalies and an ICE; I'll report the 
results here as soon the the entire test set is complete.

Should I also analyze tree-ssa, aka 3.5? Is there value in comparing 
results from 3.3, 3.4, and 3.5?

Considered opinions will be appreciated.

..Scott

-- 
Scott Robert Ladd
Coyote Gulch Productions (http://www.coyotegulch.com)
Software Invention for High-Performance Computing