4 releases

new 0.3.2 Jul 8, 2024
0.3.1 Jul 8, 2024
0.3.0 Jul 8, 2024
0.2.0 May 31, 2024

#13 in #mlir

28 downloads per month
Used in 2 crates



Programming Languages Intermediate RepresentatiON


pliron is an extensible compiler IR framework, inspired by MLIR and written in safe Rust.

Build and Test

  • Install the rust toolchain.

  • cargo build and cargo test should build the compiler and run the testsuite.

  • To see a simple IR constructed (by the print_simple test), use the following command:

    cargo test print_simple -- --show-output

    It should print something like:

    builtin.module @bar {
        builtin.func @foo: builtin.function<() -> (builtin.int<si64>)> {
            c0_op_3v1_res0 = test.constant builtin.integer <0x0: builtin.int<si64>>;
            test.return c0_op_3v1_res0
  • pliron provides an llvm-opt tool that can parse LLVM-IR bitcode into the LLVM dialect and output LLVM-IR bitcode.

Using the Library

pliron is currently in a nascent stage and not yet useful for real-world use. In the future it can be used by just adding a dependence to the crate in your Rust project.


  • Introduction and motivation are covered in the introductory wiki article.
  • The wiki also has a comparison of pliron with other compiler projects, touching upon some design decisions.
  • Code documentation can be found on docs.rs.


~34K SLoC