[llvm-dev] I want to update WritingAnLLVMBackend document

[Leslie Zhai via llvm-dev]

Hi LLVM developers,

As one of the maintainers of AVR target, I want to update 
WritingAnLLVMBackend document to be familiar with the development of 
backend, because:

1. The structure of LLVMTargetMachine 
https://github.com/llvm-mirror/llvm/blob/master/docs/WritingAnLLVMBackend.rst#target-machine 
has been changed a lot!

2. LLVMInitializeSparcTargetInfo 
https://github.com/llvm-mirror/llvm/blob/master/docs/WritingAnLLVMBackend.rst#target-registration 
not mentioned the directory structure: TargetInfo/SparcTargetInfo.cpp

3. There is the Sparc target example in the document, but we could add 
AVR target as another example

Please give me some advice, thanks a lot!

-- 
Regards,
Leslie Zhai - a LLVM hacker https://reviews.llvm.org/p/xiangzhai/