http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52054
--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-12 11:57:41 UTC --- (In reply to comment #4) > (In reply to comment #3) > > PR53125 has a testcase where we spend time in redundant store removal in > > eliminate() which does vn_reference_lookup with VN_WALK (which it should not > > need). > > The patch of comment #2 has no influence on the compile time for bug 53125. Is > that expected? Yes. You need to change the vn_reference_lookup with VN_WALK in eliminate() to VN_NOWALK, too (based on the fact that we'd have done that lookup at value-numbering time already and entered the result, so walking would no longer be necessary).
