On Tue, Jul 19, 2011 at 6:02 PM, Johan Tibell
I've implemented the primop but run into some difficulty: to use the above fallback I need the code to be statically linked into every binary. I'm not quite sure how to achieve that.
If dynamic linking doesn't hurt performance (too much). Could I stick this piece of C code in ghc-prim? Are we guaranteed to always link against ghc-prim?
GCC manages by having the above function definition in libc, which is always statically linked.
I just realized that this isn't true. I wonder if GCC's __builtin_popcount suffers a performance degradation when libc is dynamically linked.
I think LLVM uses a small statically linked compiler run-time library for the same purpose.
However I believe this is the case still. I'll need to doublecheck. Johan