IREE: Intermediate Representation Execution Environment

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IREE (Intermediate Representation Execution Eenvironment, pronounced as "eerie") is an MLIR-based end-to-end compiler and runtime that lowers Machine Learning (ML) models to a unified IR that scales up to meet the needs of the datacenter and down to satisfy the constraints and special considerations of mobile and edge deployments.

See our website for project details, user guides, and instructions on building from source.

Project news

• 2025-04-02: AMD submitted an IREE-based SDXL implementation to the MLPerf benchmark suite
• 2024-05-23: IREE joins the LF AI & Data Foundation as a sandbox-stage project

Project status

Release status

Releases notes are published on GitHub releases.

| Package | Release status | | -- | -- | GitHub release (stable) | GitHub release (nightly) | iree-base-compiler | iree-base-runtime |

For more details on the release process, see https://iree.dev/developers/general/release-management/.

Build status

Nightly build status

| Operating system | Build status | | -- | --: | Linux | macOS | macOS |

For the full list of workflows see https://iree.dev/developers/general/github-actions/.

Communication channels

• GitHub issues: Feature requests, bugs, and other work tracking
• IREE Discord server: Daily development discussions with the core team and collaborators
• (New) iree-announce email list: Announcements
• (New) iree-technical-discussion email list: General and low-priority discussion
• (Legacy) iree-discuss email list: Announcements, general and low-priority discussion

Related project channels

• MLIR topic within LLVM Discourse: IREE is enabled by and heavily relies on MLIR. IREE sometimes is referred to in certain MLIR discussions. Useful if you are also interested in MLIR evolution.

Architecture overview

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See our website for more information.

Presentations and talks

Community meeting recordings: IREE YouTube channel

Date | Title | Recording | Slides ---- | ----- | --------- | ------ 2025-06-10 | Data-Tiling in IREE: Achieving High Performance Through Compiler Design (AsiaLLVM) | recording | slides 2025-05-17 | Introduction to GPU architecture and IREE's GPU CodeGen Pipeline | recording | slides 2025-02-12 | The Long Tail of AI: SPIR-V in IREE and MLIR (Vulkanised) | recording | slides 2024-10-01 | Unveiling the Inner Workings of IREE: An MLIR-Based Compiler for Diverse Hardware | recording | 2021-06-09 | IREE Runtime Design Tech Talk | recording | slides 2020-08-20 | IREE CodeGen (MLIR Open Design Meeting) | recording | slides 2020-03-18 | Interactive HAL IR Walkthrough | recording | 2020-01-31 | End-to-end MLIR Workflow in IREE (MLIR Open Design Meeting) | recording | slides

License

IREE is licensed under the terms of the Apache 2.0 License with LLVM Exceptions. See LICENSE for more information.