[all-commits] [llvm/llvm-project] d3161d: [PassBuilder] VectorizerEnd Extension Points (#123...

[Axel Sorenson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d3161defd6b717241a85b6ca528754c747060735
      https://github.com/llvm/llvm-project/commit/d3161defd6b717241a85b6ca528754c747060735
  Author: Axel Sorenson <axelcool1234 at gmail.com>
  Date:   2025-01-29 (Wed, 29 Jan 2025)

  Changed paths:
    M llvm/include/llvm/Passes/PassBuilder.h
    M llvm/lib/Passes/PassBuilderPipelines.cpp
    M llvm/test/Other/new-pm-O0-ep-callbacks.ll
    M llvm/test/Other/new-pm-defaults.ll
    M llvm/test/Other/new-pm-lto-defaults.ll
    M llvm/test/Other/pass-pipeline-parsing.ll
    M llvm/tools/opt/NewPMDriver.cpp

  Log Message:
  -----------
  [PassBuilder] VectorizerEnd Extension Points (#123494)

Added an extension point after vectorizer passes in the PassBuilder.
Additionally, added extension points before and after vectorizer passes
in `buildLTODefaultPipeline`. Credit goes to @mshockwave for guiding me
through my first LLVM contribution (and my first open source
contribution in general!) :)
- Implemented `registerVectorizerEndEPCallback`
- Implemented `invokeVectorizerEndEPCallbacks`
- Added `VectorizerEndEPCallbacks` SmallVector
- Added a command line option `passes-ep-vectorizer-end` to
`NewPMDriver.cpp`
- `buildModuleOptimizationPipeline` now calls
`invokeVectorizerEndEPCallbacks`
- `buildO0DefaultPipeline` now calls `invokeVectorizerEndEPCallbacks`
- `buildLTODefaultPipeline` now calls BOTH
`invokeVectorizerStartEPCallbacks` and `invokeVectorizerEndEPCallbacks`
- Added LIT tests to `new-pm-defaults.ll`, `new-pm-lto-defaults.ll`,
`new-pm-O0-ep-callbacks.ll`, and `pass-pipeline-parsing.ll`
- Renamed `CHECK-EP-Peephole` to `CHECK-EP-PEEPHOLE` in
`new-pm-lto-defaults.ll` for consistency.

This code is intended for developers that wish to implement and run
custom passes after the vectorizer passes in the PassBuilder pipeline.
For example, in #91796, a pass was created that changed the induction
variables of vectorized code. This is right after the vectorization
passes.



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