How to create a new gcc backend for my personal MCU?

[Rafiq Z]

Hi everyone,

In addition to  basic arithmetic and branch instructions the mcu has
special instructions
for audio/video-processing. Now i code using something like machine
code. An ease-use
language tool is needed to popularize it, so i would like to create a
gcc backend for it.

Although i have used gcc compiler for a long term, i am a beginer and
have no any idea
to write a gcc backend.

Is it reasonable one person take 6-12months to do it?
Where can i get guidance documents for a beginer?

Thanks!