Use
./runtest tmp-sensible-name
to run tests for llvmdc.
Move into reference/ subfolder and add to svn if desired.

Use
./findregressions old-test-resultfile tmp-sensible-name
to find changes.

Recommended:
./findregressions tmp reference/llvmdc-something | grep -v "PASS -> XFAIL" | sort > tmp-new-regressions