Build debugging infrastructure before chasing compiler or conversion flakes

Summary#

Intermittent pass failures are expensive when the only artifact is a top-level crash or vague error string. A reusable approach is to capture IR snapshots around failing passes, emit structured diagnostics, and provide an automated reduction path so engineers can shrink failures into reproducible test cases instead of debugging production-sized inputs blind.

Problem#

Compiler and model-conversion pipelines fail inside many-pass transformations, but the failing intermediate state is often discarded, making root cause analysis slow and non-repeatable.

Solution#

Add pass instrumentation that records pre/post IR, structured failure reports, timing, verification hooks, and a reducer tool/script that turns crashing workloads into minimal reproducers.

Failure Modes#

Logging only the final exception without preserving intermediate IR
Producing debug dumps with no stable directory or schema for downstream tooling
Relying on manual repro creation instead of automated reduction

Sources#

https://github.com/tensorflow/tensorflow/pull/126487
https://github.com/tensorflow/tensorflow/pull/126555
https://github.com/tensorflow/tensorflow/pull/126539
https://github.com/tensorflow/tensorflow/pull/126482
https://github.com/tensorflow/tensorflow/pull/126535
https://github.com/tensorflow/tensorflow/pull/126489
https://github.com/tensorflow/tensorflow/pull/126002
https://github.com/tensorflow/tensorflow/pull/126485
https://github.com/tensorflow/tensorflow/pull/126479
https://github.com/tensorflow/tensorflow/pull/126469
https://github.com/tensorflow/tensorflow/pull/126478
https://github.com/tensorflow/tensorflow/pull/126231
https://github.com/tensorflow/tensorflow/pull/126513
https://github.com/tensorflow/tensorflow/pull/126249
https://github.com/tensorflow/tensorflow/pull/125480
https://github.com/huggingface/transformers/pull/46825
https://github.com/huggingface/transformers/pull/48262
https://github.com/huggingface/transformers/pull/48368
https://github.com/huggingface/transformers/pull/47432
https://github.com/huggingface/transformers/pull/48406
https://github.com/huggingface/transformers/pull/48440
https://github.com/huggingface/transformers/pull/47793
https://github.com/huggingface/transformers/pull/48438
https://github.com/huggingface/transformers/pull/48228
https://github.com/huggingface/transformers/pull/47511
https://github.com/huggingface/transformers/pull/47367
https://github.com/huggingface/transformers/pull/48444
https://github.com/microsoft/ML-For-Beginners/pull/1002
https://github.com/microsoft/ML-For-Beginners/pull/1001
https://github.com/microsoft/ML-For-Beginners/pull/1000
https://github.com/microsoft/ML-For-Beginners/pull/994
https://github.com/microsoft/ML-For-Beginners/pull/991
https://github.com/ClickHouse/ClickHouse/pull/116899
https://github.com/ClickHouse/ClickHouse/pull/107639
https://github.com/ClickHouse/ClickHouse/pull/113156
https://github.com/ClickHouse/ClickHouse/pull/117472
https://github.com/ClickHouse/ClickHouse/pull/117303
https://github.com/ClickHouse/ClickHouse/pull/117412
https://github.com/ClickHouse/ClickHouse/pull/117304
https://github.com/ClickHouse/ClickHouse/pull/117086
https://github.com/ClickHouse/ClickHouse/pull/117491
https://github.com/ClickHouse/ClickHouse/pull/117493
https://github.com/ClickHouse/ClickHouse/pull/117492
https://github.com/rustfs/rustfs/pull/7008
https://github.com/rustfs/rustfs/pull/7006
https://github.com/rustfs/rustfs/pull/7005
https://github.com/rustfs/rustfs/pull/7004
https://github.com/rustfs/rustfs/pull/6978
https://github.com/rustfs/rustfs/pull/6997
https://github.com/rustfs/rustfs/pull/6994
https://github.com/rustfs/rustfs/pull/6992
https://github.com/rustfs/rustfs/pull/6991
https://github.com/rustfs/rustfs/pull/6988
https://github.com/rustfs/rustfs/pull/7007
https://github.com/rustfs/rustfs/pull/6974
https://github.com/rustfs/rustfs/pull/6983
https://github.com/rustfs/rustfs/pull/6998
mined_at: 2026-09-01T12:03:51Z

Sagwan Revalidation 2026-09-01T12:41:53Z#

verdict: ok
note: 일반적 디버깅 인프라 권장안으로 현재 practice와 충돌 없음

Sagwan Revalidation 2026-09-07T17:00:55Z#

verdict: ok
note: [chatgpt HTTP 404] {

Sagwan Revalidation 2026-09-10T05:42:50Z#

verdict: ok
note: [chatgpt HTTP 404] {

Sagwan Revalidation 2026-09-12T23:41:43Z#

verdict: ok
note: IR 스냅샷·구조화 진단·자동 축소 원칙은 컴파일러/변환 파이프라인 디버깅의 불변 관행이며 소스 PR들도 역사적 증거로 여전히 유효하다.