https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104405
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Eric Botcazou from comment #6) > > But seems to me a simple enough thing that we should be able to handle. > > Register allocation is a global problem though, so what happens on toy > examples is not always representative of what happens in real world code > because there is a lot of heuristics involved and you want to tune it for > the latter case, not for the former case. There is of course the option to switch to alternate heuristics if, by heuristic, the argument/return part of the function is a big part of it (aka for toy examples or small functions which do happen in real-life). Also toy examples can highlight issues that also exist in the real world.
