> > > > BTW2: We badly need to figure out a way to create test cases for FDO... :-( > > Yes. I had tried testing awhile back with the gcc regression tests and > enabling -freorder-blocks-and-partition, but none of the issues I was > having with larger benchmarks fired. I think there just aren't enough > (or large/complex enough?) FDO tests in gcc.dg/tree-prof and elsewhere > to trigger this. I was able to trigger many of the issues when > compiling cpu2006 with fdo and partitioning enabled, but it will take > some work to cut them down.
Yep, we do not have that many testcases in tree-prof and modifying i.e. gcc.c-torture/execute to run with -fprofile-generate/-fprofile-use by default is probly bit of overkill. Having easy way to do that optionally may be interesting though. Once -freorder-blocks-and-partition actually works, we should enable it by default with -fprofile-generate (I recall I was trying to do that once, but I am not sure what was outcome back then and why it did not happen). That should get it tested with profiledbootstrap, too. Honza > > Thanks, > Teresa > > > > > Ciao! > > Steven > > > > -- > Teresa Johnson | Software Engineer | tejohn...@google.com | 408-460-2413
