llvm-pretty

A pretty printing library that was inspired by the LLVM binding by Lennart Augustsson. The library provides a monadic interface to a pretty printer, that allows functions to be defined and called, generating the corresponding LLVM assembly when run.

LLVM language feature support

Currently, llvm-pretty supports LLVM versions up through 17. As a result of the broad version coverage, the llvm-pretty AST is a superset of all versions of the LLVM AST. This means that the manner in which certain information is presented in the llvm-pretty AST (e.g., during pretty printing) will be different depending on the LLVM version used to originate the information. Conversely, it is possible to construct an llvm-pretty AST that cannot be represented in a specific (or any) LLVM version.

llvm-pretty strives to support a reasonable variety of LLVM language features, but there are places where our coverage of the LLVM language is incomplete. If you need a LLVM feature that is not currently supported by llvm-pretty, please file an issue.

llvm-pretty versus llvm-pretty-bc-parser

llvm-pretty supports almost everything that one would want to do with LLVM ASTs. One notable exception is parsing: llvm-pretty deliberately does not support parsing an LLVM module AST from a bitcode file. This functionality is factored out into a separate llvm-pretty-bc-parser library. llvm-pretty-bc-parser generally tries to stay in sync with all of the LLVM language features that llvm-pretty supports, but it may be the case that some valid llvm-pretty ASTs cannot be parsed by llvm-pretty-bc-parser. If you encounter an occurrence of this issue, please file an issue at the llvm-pretty-bc-parser issue tracker.