Do we have the testsuite infrastructure to easily do this?

[Daniel Berlin]

In order to test linear loop transforms, it's not sufficient to just look 
at the produced dumps.
The only real way to be sure everything worked okay is to do the 
following:

Make the testcase print out the values of the induction variables for 
the iteration it is executing.

Compile and run without -ftree-loop-linear, redirect output to file.

Compile and run with -ftree-loop-linear, redirect output to file.

sort -n both files, diff.

There should be no differences.

This is the only real way to make sure it's executing the same iterations 
it was before.


I'm not sure this is easy to do with our current test infrastructure 
though.
Could somebody help me to do this (i'm no expect expert) so that i can add 
some linear loop transform testcases?

--Dan