"Gregory B. Prokopski" <[EMAIL PROTECTED]> writes: > +++ Ian Lance Taylor [06/07/07 09:16 -0700]: > > shorten_branches should work correctly--you shouldn't need to do > > anything special. My only guess is that there is something wrong with > > the way you are reordering the blocks. For example, perhaps you are > > simply reordering the CFG without reordering the insn chain. Note > > that shorten_branches is not (yet) CFG aware. It simply walks the > > insn chain. > > To reorder BBs I use the following procedure: > > 1. cfg_layout_initialize (0); > 2. FOR_EACH_BB(bb) set bb->rbi->next properly for each, so they all create > a chain of BB > 3. cfg_layout_finalize(); > > Does this reorder the insn chain? If not, how do I reorder it? > Or where do I look for how it's done?
I think that should work. Although it's bb->aux, not bb->rbi->next. I'm not sure what bb->rbi is; which version of gcc are you using? The code to get the insn chain correct is fixup_reorder_chain in cfglayout.c. Ian
