I would conclude from the statistics that, right now, the cost of
including -fforward-propagate in -O1 overrides any performance benefit
that may result.
I'm still working on a patch to eliminate reaching definitions from fwprop.
Paolo
I've put at
http://www.math.purdue.edu/~lucier/bugzilla/9/
some compile-time and run-time statistics related to PR 39157 and PR
33928 and compile times and run times for the programs in the Gambit
Scheme benchmark suite. The statistics are for 4.1.2 release, 4.2.4
release, 4.3.3 release, 4.4.1
