.NET has always had native support, although in various forms.

NGEN, only usable for fast startup, using dynamic linking.

Singularity and Midori respective C# dialects.

MDIL in Windows 8.x based on Singularity Bartok compiler toolchain.

.NET Native on UWP, taken from Project N, inspired by Midori's System C#.

Mono AOT used by Xamarin for iOS and Android.

Homebrew OS like CosmOS.

Unity's IL2CPP toolchain.