On Apr 19, 2006, at 12:04 AM, Kai Henningsen wrote:
[EMAIL PROTECTED] (Daniel Berlin) wrote on 18.04.06 in
<[EMAIL PROTECTED]>:
This is in fact, not terribly surprising, since the algorithm used
was the
result of Sebastian and I sitting at my whiteboard for 30 minutes
trying to
figure out what we'd need to do to make swim happy :).
This would leave -ftree-loop-linear in 4.2, but make it not useful
for
increasing SPEC scores.
So is this an object lesson for why optimizing for benchmarks is a bad
idea?
If you're inclined to believe this, you could find a confirming
instance here, but there are other lessons that could be drawn. If
you go back to the original thread, you'll see this from Toon Moene:
http://gcc.gnu.org/ml/gcc-patches/2004-09/msg00256.html
It didn't have to be a benchmark-only optimization.
