On 9/27/2014 3:26 PM, Brad Roberts via Digitalmars-d wrote:
What we're seeing here is pretty much the same problem that early c++ suffered from: abstraction penalty. It took years of work to help overcome it, both from the compiler and the library. Not having trivial functions inlined and optimized down through standard techniques like dead store elimination, value range propagation, various loop restructurings, etc means that code will look like what Walter and you have shown. Given DMD's relatively weak inliner, I'm not shocked by Walter's example. I am curious why ldc failed to inline those functions.
Again, this accumulation of barnacles is not a failure of the optimizer. It's a failure of adding gee-gaws to the source code without checking their effect.
