https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87763
--- Comment #11 from Wilco <wilco at gcc dot gnu.org> --- A SPEC2006 run shows the codesize cost of make_more_copies is 0.05%. Practically all tests are worse, the largest increases are perlbench at 0.20%, gromacs 0.12%, calculix 0.12%, soplex 0.08%, xalancbmk 0.07%, wrf 0.06%. In total ~26KBytes of extra moves... Overall this doesn't look like a good change. So the question is, what is the purpose of adding extra live ranges when the register allocator doesn't appear to be able to merge them?
