llvm / llvm/offload-test-suite

[Metal] `firstbitlow.16`, `firstbitlow.64`, and `firstbithigh.64` fail with `gpu-exec: error: Failed to materializeAll.:` on Metal

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driver-bug
Dominant language
C++
Stars
18
Forks
39
Avg merge
2d 18h
Merged PRs (30d)
40

Description

The following tests fail with `gpu-exec: error: Failed to materializeAll.:` on Metal:

- test/Feature/HLSLLib/firstbitlow.16.test
- test/Feature/HLSLLib/firstbitlow.64.test
- test/Feature/HLSLLib/firstbithigh.64.test

As can be seen in the logs:
- https://github.com/llvm/offload-test-suite/actions/runs/19942216828/job/57182673499?pr=590
- https://github.com/llvm/offload-test-suite/actions/runs/19942216828/job/57182673462?pr=590

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the failing tests test/Feature/HLSLLib/firstbitlow.16.test, firstbitlow.64.test, and firstbithigh.64.test, then review the linked Metal CI logs for the gpu-exec materialization failure. Done means all three tests complete successfully on Metal without the reported error.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
testing
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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