On Wed, 2013-06-19 at 22:42 +0800, Bin.Cheng wrote: > On Tue, Jun 18, 2013 at 10:02 PM, Oleg Endo <oleg.e...@t-online.de> wrote: > > > > No, I haven't disabled ivopt. > > > > But -fno-ivopts is specified in PR50749. > With current implementation, auto-inc-dec iterates instructions > backward, tries to find memory access and increment/decrement pairs. > It will miss opportunities if instructions are interfered with each > other.
Sorry for the confusion. I used -fno.ivopts in the original examples in the PR to emphasize one of the auto-inc-dec problems. If ivopts is not disabled there will be no auto-inc addressing modes at all. I've added a comment in the PR clarifying this. Cheers, Oleg
