trenouf / llvm-dialects

LLVM Dialects Library

llvm-dialects

Overview

The LLVM Dialects library allows defining "dialects" on top of the LLVM IR "substrate" in a TableGen-based DSL that looks, on purpose, very much like the DSL used to define MLIR dialects.

Its main user is LLPC. We welcome other interested parties. Development of llvm-dialects happens on GitHub, using Issues and Pull Requests.

LLVM Compatibility

The main branch is generally expected to work with (a recent version of) the main branch of the llvm-project repository. No promises are made about compatibility with any specific LLVM version.

Components

• lib/Dialect: a helper library that allows the creation of basic dialects (in the MLIR sense) for LLVM IR
• lib/TableGen: common code for interpreting TableGen records that define a dialect
• utils/llvm-dialects-tblgen: a standalone CLI tool which reads a .td dialect definition and outputs C++ header and source files