------- Comment #10 from bernds_cb1 at t-online dot de 2009-12-01 17:27 ------- Yes, regrename should only affect the second scheduling pass.
I'm attaching a stab-in-the-dark patch. It contains a fix for the ia64 regressions (testing in progress), it adds a few warnings which could be useful to spot whether the testcase is producing the corner cases we refuse to handle, and it makes some changes to the register selection. The idea is to prefer registers which aren't used in the basic block yet, which should give the best freedom to the scheduler. I'd be glad if you could play with this and let me know the results. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42216
