Thank you everybody with the helpful input.
I ran into a small problem. I have some features ready (well, not
everything I wanted, but still good enough). I'm now trying to
instrument the resulting code to time each loop independently.
Essentially, what I want is to programatically modify loops from:
for (...)
{
}
to
s = clock()
for (...)
{
}
stuff += clock() - s
Of course, instead of clock(), I'd like to use a non-intrusive
mechanism. However, my research on this topic didn't lead to anything
but perfsuite, which doesn't work very well for me (should it?).
So here are the questions
- how can I actually insert the code (I need to do this during the
loop-unrolling phase, when the code is already in RTL form)?
- what performance measurement should I try?
- what other related work is out there?
Thanks,
Stefan Ciobaca
On 6/8/07, Stefan Ciobaca <[EMAIL PROTECTED]> wrote:
Hello everyone,
For my bachelor thesis I'm modifying gcc to use machine learning to
predict the optimal unroll factor for different loops (inspired from
this paper: http://www.lcs.mit.edu/publications/pubs/pdf/MIT-LCS-TR-938.pdf).
