how to build a compiler using LLVM for AngelScript

[heepoo]

hi all,
i'm making a game engine for blind and vision impaired users using AngelScript
now, the question is, do you know a LLVM compiler for it? or i have to build my own?
and some questions about AngelScript:
1. how can i know what is called in the script?
for example:

int x=7;
int y=9;
int z=x+y;

how can i know what is executing? it is a add instruction, sub instruction, etc
2. how can i detect the function parameters?
for example:

void func1(int i, string j, pointer @p)
{
...
}

how can i detect the type of parameters in C++
i'm new to AngelScript, and i dont know many about it
thanks in advance.