[probably my last post on this -- agreed it is OT, and the proposed SIMD framework would be interesting] On Wed, 13 Oct 2010, Bryce Lelbach wrote:
There's nothing magic about JITing C++, even JITing non-trivial C++. It's basically pointless, because the LLVM bitcode/LLVM assembly generated by a C++ program is absolutely, positively not portable.
Agreed on the portability, but I think you missed the point. People are advocating something like JIT, not to VM bytecode but directly to machine code, exactly to get non-portable optimizations.
I think I saw some comments implying that C compilers were faster or better than C++ compilers. I know that I saw people claim that C compilers were faster, better or could optimize better than C++ compilers implemented using expression templates and metaprogramming techniques. Such claims are unfounded.
The normal example is Fortran being faster than C/C++ because it doesn't have to worry about issues such as pointer aliasing. Later, Daniel