On Oct 6, 2014, at 4:32 AM, Richard Biener <richard.guent...@gmail.com> wrote: > On Mon, Oct 6, 2014 at 11:57 AM, Bin.Cheng <amker.ch...@gmail.com> wrote: > > How many merging opportunities does sched2 undo again? ISTR it > has the tendency of pushing stores down and loads up.
So, the pass works by merging 2 or more loads into 1 load (at least on my port). sched2 would need to rip apart 1 load into 2 loads to be able to undo the real work. The non-real work, doesn’t matter any. Can sched2 rip apart a single load?
