A program to generate LLVM-IR file from .sy(same as.c)

My Contributions are

• ./simple

• base on provided API, I developed new API for generating multi-dimension array

  The main program is

  ./IRbuilder/src/SysYFIRBuilder/IRBuilder.cpp

  However I have also modified files in

  ./IRbuilder/include/SysYFIR

  ./IRbuilder/src/SysYFIR

​ to build the API we use.