A proposal that eliminates stack copies at the heart of C type'ish languages like C# when using 'structs' (aka value types) heavily as is done in image manipulation, graphics in general, physics, games, Unity3D, etc (I'm sure there are many more fields as well).
- 40% .NET Core & Framework performance increase on i3-7100 using this benchmark with 'USE_OUT' enabled: Link
- Performance increase could actually be higher if the code complexity increased.
- Not yet tested but guessing even a bigger gain on ARM SoC.
- Allows one to describe vector based algorithms in C# as you do in HLSL, GLSL, CG, etc without performance loss due to stack copies.
- You can maintain operator 'precedence' in vector math as is done with primitive types in C#.
- Doesn't break older C# or .NET runtime versions.