{
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        "host": "bibim",
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        "rationale": "Pass retained: loom-lower-for-to-graph is the stage that consumes explicit loom.spatial_region candidates inside dataflow.thread and publishes the dataflow.graph definition plus its dataflow.graph.launch (lib/Frontend/Lowering/LowerForToGraphPass.cpp:1 and 914-917; lib/Frontend/Lowering/Pipeline.cpp:4-7), so it produces exactly the graph.launch boundaries the selected output obligation constrains; the pinned lit tests for this claim invoke the same single pass flag (test/raise/scf-to-dfg-explicit-spatial-ownership.mlir:1). Added --mlir-print-op-generic, a printing flag only: the checker's xdsl front end cannot parse loom/dataflow custom assembly formats, and the attempt-002 receipt showed AP0001 'Operation builtin.unregistered does not have a custom format' on the pretty-printed output. It changes no pass behaviour."
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    "finished": "2026-09-11T02:57:28Z",
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