Starting support for HAL dispatch specialization. (#12483)

This allows `stream.cmd.dispatch` ops to specify multiple entry points
in executables that can be dispatched. During interface materialization
the entry points are expanded for all materialized variants. HAL
backends are also able to add their own entry points either in existing
variants or new ones during translation (no helpers yet, but it's
possible). When lowering the `stream.cmd.dispatch` into
`hal.command_buffer.dispatch` each export now chooses the condition for
which it should be selected.

This initial work just prepares the op for this conditional dispatch and
also solves an issue with compiler reentrancy where between interface
materialization and HAL conversion we had IR that would not verify
(stream ops still referencing un-materialized exports). Only the
existing target variant matcher condition is supported but we now have
the place where we'd call out to HAL backend-produced logic for
selection (`getExportConditionAttr`).

The `inline-dynamic` HAL model can support this too but for now that's
deferred until we add the backend support - the `hal.device.switch` op
needs a reworking to be used in that context.

Fixes #12476.
22 files changed
tree: 40c0ba28b03509f9b0374215f0404424b100d813
  1. .github/
  2. benchmarks/
  3. build_tools/
  4. compiler/
  5. docs/
  6. experimental/
  7. integrations/
  8. lib/
  9. llvm-external-projects/
  10. runtime/
  11. samples/
  12. tests/
  13. third_party/
  14. tools/
  15. .bazelignore
  16. .bazelrc
  17. .bazelversion
  18. .clang-format
  19. .dockerignore
  20. .gitignore
  21. .gitmodules
  22. .pylintrc
  23. .style.yapf
  24. .yamllint.yml
  25. AUTHORS
  26. BUILD.bazel
  27. CITATION.cff
  28. CMakeLists.txt
  29. configure_bazel.py
  30. CONTRIBUTING.md
  31. LICENSE
  32. README.md
  33. WORKSPACE
README.md

IREE: Intermediate Representation Execution Environment

IREE (Intermediate Representation Execution Environment, 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.

CI Status

Project Status

IREE is still in its early phase. We have settled down on the overarching infrastructure and are actively improving various software components as well as project logistics. It is still quite far from ready for everyday use and is made available without any support at the moment. With that said, we welcome any kind of feedback on any communication channels!

Communication Channels

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

IREE Architecture IREE Architecture

See our website for more information.

Presentations and Talks

  • 2021-06-09: IREE Runtime Design Tech Talk (recording and slides)
  • 2020-08-20: IREE CodeGen: MLIR Open Design Meeting Presentation (recording and slides)
  • 2020-03-18: Interactive HAL IR Walkthrough (recording)
  • 2020-01-31: End-to-end MLIR Workflow in IREE: MLIR Open Design Meeting Presentation (recording and slides)

License

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