Virtual methods

[dsimcha]

== Quote from Walter Bright (newshound1 at digitalmars.com)'s article
> bearophile wrote:
> > Partially unrelated note: LLVM plans to add a profile guided
> > optimization level too, to be used with -O6, as GCC too does. LLVM
> > also plans to do something that GCC is not currently able to do, the
> > level -O7 lifelong optimization. This is like in Java, the profile
> > guided optimization happens at normal runtime too, so you need to
> > keep the llvm compiler along with your shipped binary. D2 language in
> > future can use that technology too. With care and work, this will
> > allow de-virtualize functions at runtime in D2/D3.
> > http://llvm.org/releases/1.4/docs/CommandGuide/html/llvmc.html
> Believe it or not, you can do profile guided optimizations with the dmd
> profiler and optlink. The profiler will emit a file to be passed to the
> linker which will set the layout of functions to minimize paging.

Is that still a relevant optimization?  It probably made sense circa 1995 when
computers had much less memory, but now I would think that binaries are so much
smaller than a typical computer's memory that they almost never get paged out.