> On 09/03/14 02:35, Steven Bosscher wrote: > >On Wed, Sep 3, 2014 at 9:17 AM, Bin.Cheng wrote: > >>Last time I tried, there are several passes after loop_done and before > >>auto-inc-dec can't handle auto-increment addressing mode, including > >>fweb. > > > >It surprises me that pass_web can't handle AUTOINC. Perhaps I'm off my > >rocker, but it's always been my understanding that almost all passes > >handle AUTOINC just fine (or at least conservatively: punt if you see > >an AUTOINC), and that only CSE really doesn't know about AUTOINC at > >all. > In the past autoinc instructions didn't appear until flow (just > prior to combine) and that was documented behaviour. So anything > which was run strictly prior to flow/combine wasn't autoinc aware. > That may have changed somewhat with the autoinc rewrite.
It is long time since I looked at web, but it should understand read/write refs and that those must remain unified. how does DF refs look like for autoinc? Honza > > jeff
