Inherent code performance advantages of D over C?

[bearophile]

Another thing to keep in account is that C is not much any more 
the golden standard for code performance. Today people that want 
to write fast code often use parallel algorithms using GPUs with 
CUDA/OpenCL (that look like C with extras), and when they are on 
CPUs they need to use all cores efficiently and SIMD units of the 
CPUs. (See the ideas of the Intel language compiled by ispc 
compiler: http://ispc.github.io/  This contains ideas useful to 
improve D language. D is lacking here).

Bye,
bearophile