Hi, On Tue, 6 Mar 2007, Joern Rennecke wrote:
> In http://gcc.gnu.org/ml/gcc/2007-03/msg00128.html, you wrote: > > One case is about multiple increments, the tree optimizer merges them and > > increments the register only once, so if one only looks at the size of the > > pointer value one misses them, e.g. something like this: > > > > (set (mem (reg)) (x)) > > (set (mem (plus (reg) (const_int 4))) (x)) > > (set (reg) (plus (reg) (const_int 8)) > > The patches attached to PR20211 handle this case. Hmm, it seems to do a bit more. I have to agree with the last comment insofar, that regmove.c is probably not the best place for this. Most of the auto-inc-dec business should be done before combine. bye, Roman