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Re: Fixing jumps reachability after block reordering
+++ 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
Does this reorder the insn chain? If not, how do I reorder it?
Or where do I look for how it's done?
Gregory B. Prokopski <firstname.lastname@example.org>
Sable Research Group http://www.sable.mcgill.ca
Montreal, Quebec, Canada