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[DRAFT] Change jit fuzzer build to pull Antigen from jitutils#129018

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dhartglassMSFT:use_jitutils_antigen
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[DRAFT] Change jit fuzzer build to pull Antigen from jitutils#129018
dhartglassMSFT wants to merge 2 commits into
dotnet:mainfrom
dhartglassMSFT:use_jitutils_antigen

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Copilot AI review requested due to automatic review settings June 4, 2026 22:13
@github-actions github-actions Bot added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jun 4, 2026
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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
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Pull request overview

This PR updates the CoreCLR exploratory JIT fuzzer setup to build Antigen from the dotnet/jitutils repository (instead of the older standalone repo), and updates the local documentation link accordingly.

Changes:

  • Switch Antigen’s source repo to https://github.com/dotnet/jitutils.git and adjust the project path.
  • Add optional sparse-checkout support so tools living in a repo subtree can be cloned without pulling the full repo.
  • Update exploratory.md to point Antigen’s documentation link at the new location.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File Description
src/coreclr/scripts/fuzzer_setup.py Updates Antigen repo/project path and adds sparse-checkout clone flow.
src/coreclr/scripts/exploratory.md Updates the Antigen link to the new jitutils location.

Comment thread src/coreclr/scripts/fuzzer_setup.py Outdated
Comment on lines +134 to +136
with ChangeDir(tool_code_directory):
run_command(["git", "sparse-checkout", "set", "--cone", sparse_path])
run_command(["git", "checkout"])
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/azp list

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CI/CD Pipelines for this repository:

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/azp run Antigen

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Azure Pipelines successfully started running 1 pipeline(s).

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