Integrating antlr4 with LLVM

Question

I am developing a compiler using ANTLR and LLVM. I have already implemented a lexer and a parser using ANTLR 4's Eclipse IDE. I want to implement a semantic analyzer and a code generator using LLVM. For this I want to know how to integrate the two. Most of the projects that I have seen online use ANTLR for semantic analysis (with visitor and walker functions) and LLVM for code generation only. I want to know how to pass ANTLR parser output as input to LLVM semantic analyser. Links to online examples illustrating this would be very useful.

Answer 1

Although you mentioned ANTLR4 there is an example of using ANTLR3 to generate LLVM IR for a subset of C here https://theantlrguy.atlassian.net/wiki/spaces/ANTLR3/pages/2687062/LLVM It is very interesting and presents an example of how to use both tools together to create a working compiler.