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[torch.compile] Custom op matching #24188

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[torch.compile] Custom op matching #24188

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@ProExpertProg ProExpertProg commented Sep 3, 2025 •
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Fixes #23091.

Purpose

Cleanup compilation tests and custom passes and address #23091 and part of #24376. This PR is a prerequisite for matching torch implementations of custom ops in #TODO.

Cleanup:

  • RMSNorm + QuantFP8 fusion:
    • remove custom multi-output matching workaround
    • remove .instance() workaround
    • rename FusionPass to RMSNormQuantFusionPass
  • reduce test_fusion.py running time
  • add cleanup pass that topo-sorts and does DCE
  • add LazyInitPass test utility
  • add env var for pattern match debugging (TODO: docs)
  • fix test_sequence_parallelism.py
  • add assert to test_silu_mul_quant_fusion for easier diagnostics of fp4 failures.

Test Plan

Unit tests all pass.

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  • The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
  • The test plan, such as providing test command.
  • The test results, such as pasting the results comparison before and after, or e2e results
  • (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.
  • (Optional) Release notes update. If your change is user facing, please update the release notes draft in the Google Doc.

@ProExpertProg ProExpertProg moved this from To triage to In progress in torch.compile integration Sep 3, 2025
This was referenced Sep 3, 2025
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@ilmarkov ilmarkov mentioned this pull request Sep 5, 2025
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mergify bot commented Sep 6, 2025

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @ProExpertProg.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

@mergify mergify bot added the needs-rebase label Sep 6, 2025
@ProExpertProg ProExpertProg force-pushed the luka/new-custom-op-matching branch from 83ee4d9 to d0f7fdb Compare September 6, 2025 18:55
@mergify mergify bot removed the needs-rebase label Sep 6, 2025
@ProExpertProg ProExpertProg mentioned this pull request Sep 6, 2025
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1 task
@ProExpertProg
pass mgr util
775ca1a 
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg
remove old multi_output_match workaround, add new workaround (tests p…
6544936 
…ass)

Signed-off-by: luka <[email protected]>
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg
Improve workaround to properly handle inputs of inputs
9d61fa9 
Signed-off-by: luka <[email protected]>
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg
Remove prints, add debug statement
bb391ce 
Signed-off-by: luka <[email protected]>
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg
Reduce fusion test running time
b0703c6 
Signed-off-by: luka <[email protected]>
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg
Rename FusionPass, remove instance() workaround, other fusion pass cl…
2599dd3 
…eanup

Signed-off-by: luka <[email protected]>
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg
Remove old QuantMultiOutputMatch
80fdf6d 
Signed-off-by: luka <[email protected]>
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg
Remove MultiOutputMatch workaround, add cleanup pass
94aa9e3 
Signed-off-by: luka <[email protected]>
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg
Add LazyInitPass
75c7919 
Signed-off-by: luka <[email protected]>
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg
Add pattern match debugging to tests
80d53cb 
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg
Fix seq-par test, add assert to silu-fp4 for clearer error
6dff951 
Signed-off-by: Luka Govedič <[email protected]>
@ProExpertProg ProExpertProg force-pushed the luka/new-custom-op-matching branch from ea109c9 to 6dff951 Compare September 6, 2025 20:30
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mergify bot commented Sep 6, 2025

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @ProExpertProg.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

@mergify mergify bot added the needs-rebase label Sep 6, 2025
@github-project-automation github-project-automation bot moved this from In progress to Done in torch.compile integration Sep 9, 2025
@ProExpertProg ProExpertProg deleted the luka/new-custom-op-matching branch September 9, 2025 22:49
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mergify bot commented Sep 9, 2025

⚠️ The sha of the head commit of this PR conflicts with #24542. Mergify cannot evaluate rules on this PR. ⚠️

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[Bug]: graph.eliminate_dead_code() break the fx graph with enable_fi_allreduce_fusion when TP == 2

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