On Tue, Oct 04, 2011 at 03:08:02PM +0200, Richard Guenther wrote > Sure, the question is if "-flto" counts as magic and thus > "don't do it when it hurts" ;)) I suppose with -flto-partition=none > (or 1to1) it would be reasonable to make -fno-toplevel-reorder work > (and thus maybe -fno-toplevel-reorder should simply force 1to1 > partitioning).
At least =none is incredible slow for larger programs. I would really prefer normal whopr, otherwise at some point LTO becomes unpracticable due to the extreme compile time penalty. I can use it right now as a workaround, but it's not a long term solution. What I really want is not full -fno-toplevel-reorder anyways, but just marking a few special variables with a special attribute to not reorder. But this patch is still needed even for that and likely a good idea anyways for the other reasons. -Andi
