Reapply [MLIR][LLVMIR] Import unregistered intrinsics via llvm.intrin… (#129174) …sic_call Original introduced in https://github.com/llvm/llvm-project/pull/128626, reverted in https://github.com/llvm/llvm-project/pull/128973 Reproduced the issue on a shared lib build locally on Linux, moved content around to satisfy both static and shared lib builds. ### Original commit message Currently, the llvm importer can only cover intrinsics that have a first class representation in an MLIR dialect (arm-neon, etc). This PR introduces a fallback mechanism that allow "unregistered" intrinsics to be imported by using the generic `llvm.intrinsic_call` operation. This is useful in several ways: 1. Allows round-trip the LLVM dialect output lowered from other dialects (example: ClangIR) 2. Enables MLIR-linking tools to operate on imported LLVM IR without requiring to add new operations to dozen of different targets. If multiple dialects implement this interface hook, the last one to register is the one converting all unregistered intrinsics. --------- Co-authored-by: Bruno Cardoso Lopes <bcardosolopes@users.noreply.github.com>
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called “LLVM”. This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.
Other components include: the libc++ C++ standard library, the LLD linker, and more.
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.
The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.