[libraries-jitstress] Assertion failed 'ValidateUse(tree) && "Expected use of local to be tailcall value"'

[jakobbotsch]

Error Blob

{
  "ErrorMessage": "Assertion failed 'ValidateUse(tree) && \"Expected use of local to be tailcall value\"'",
  "BuildRetry": false,
  "ErrorPattern": "",
  "ExcludeConsoleLog": false
}

Reproduction Steps

Example run: https://dev.azure.com/dnceng-public/public/_build/results?buildId=519023&view=results

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=519023
Error message validated: Assertion failed 'ValidateUse(tree) && "Expected use of local to be tailcall value"'
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 1/9/2024 9:28:39 PM UTC

Report

Build	Definition	Test	Pull Request
522024	dotnet/runtime	System.IO.Pipelines.Tests.WorkItemExecution	#96751
520539	dotnet/runtime	System.IO.Pipelines.Tests.WorkItemExecution	#96609
520130	dotnet/runtime	System.IO.Pipelines.Tests.WorkItemExecution	#96647
519996	dotnet/runtime	System.IO.Pipelines.Tests.WorkItemExecution
519694	dotnet/runtime	System.IO.Pipelines.Tests.WorkItemExecution	#96609
519023	dotnet/runtime	System.IO.Pipelines.Tests.WorkItemExecution

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
2	6	6

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Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
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Issue Details

---

Error Blob

{
  "ErrorMessage": "Assertion failed 'ValidateUse(tree) && \"Expected use of local to be tailcall value\"'",
  "BuildRetry": false,
  "ErrorPattern": "",
  "ExcludeConsoleLog": false
}

Reproduction Steps

Example run: https://dev.azure.com/dnceng-public/public/_build/results?buildId=519023&view=results

Author:	jakobbotsch
Assignees:	-
Labels:	area-CodeGen-coreclr, blocking-clean-ci-optional, Known Build Error
Milestone:	-

[jakobbotsch]

Bisected to #96597, cc @EgorBo. It repros with arm32 altjit for me using the test bits from the helix run and a locally built corerun (when specifying -parallel none -maxthreads 1).

[jakobbotsch]

I think it's just exposed by #96597. I'll take a closer look.