Last year I made a presentation to Unite LA, the dotnetos conference in Warsaw and to the dotnext conference in Moscow of the burst compiler that we have been working on for the past two years at Unity

In a nutshell:

The burst compiler is a technology aimed at unlocking performance for a subset of C# code beyond what C++ has been usually able to do, by translating .NET IL code into highly efficient native code.

You can consult the slides right here: