Virtual methods

[Walter Bright]

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.