[Refactor] Phaseout PassConfig kDisableDynamicTailSplit and kDynamicAlignment as they are legacy

[LeiWang1999]

This pull request removes support for two dynamic shape-related pass configuration options: tl.disable_dynamic_tail_split and tl.dynamic_alignment. The changes clean up the codebase by eliminating references to these options from both the Python and C++ code, as well as removing the associated dynamic shape example and its test.

Key removals:

Dynamic shape pass config options:

• Removed TL_DYNAMIC_ALIGNMENT and TL_DISABLE_DYNAMIC_TAIL_SPLIT from the PassConfigKey enum in tilelang/transform/pass_config.py, along with their documentation.
• Deleted the corresponding static constexpr string constants kDynamicAlignment and kDisableDynamicTailSplit from src/op/builtin.h. [1] [2]

Examples and tests:

• Removed the examples/dynamic_shape/example_dynamic.py file, which included a dynamic shape matmul kernel and runner.
• Removed the associated test file examples/dynamic_shape/test_example_dynamic.py.

Summary by CodeRabbit

• Tests

  • Removed dynamic shape symbolic test modules and benchmark utilities for matrix multiplication operations.

• Chores

  • Removed dynamic shape configuration options and related example code, simplifying the configuration space.

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[github-actions]

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[coderabbitai]

Walkthrough

The PR removes dynamic shape handling infrastructure and related test/example code. Changes include deletion of example programs, test modules for dynamic symbolic operations, and removal of associated pass configuration options from both C++ and Python layers.

Changes

Cohort / File(s)	Change Summary
Dynamic Example & Test Removal examples/dynamic_shape/example_dynamic.py, examples/dynamic_shape/test_example_dynamic.py	Deleted example implementation of JIT-compiled tiled matrix multiplication with dynamic shapes, including kernel definitions, wrapper functions, and associated test module.
Dynamic Test Infrastructure Removal testing/python/dynamic/test_tilelang_dynamic_symbolic.py, testing/python/dynamic/test_tilelang_dynamic_symbolic_bench.py	Removed comprehensive test and benchmark modules for dynamic symbolic matmul operations, including helper factories, correctness assertions, and profiling utilities.
Pass Configuration Cleanup src/op/builtin.h, src/op/builtin.cc, tilelang/transform/pass_config.py	Removed two pass configuration options: kDisableDynamicTailSplit (Bool) and kDynamicAlignment (Integer) from header, registration, and enum definitions.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Changes consist primarily of file deletions and removal of configuration constants
• No complex logic modifications or control flow changes
• All removals appear consistent and aligned with deprecating dynamic vectorization features

Possibly related PRs

• [Refactor] Phaseout legacy loop vectorize dynamic pass #1245 — Removes the LoopVectorizeDynamic pass and its invocation; complements this PR by deleting the dynamic loop-vectorization pass alongside the removal of related pass config options.

Suggested reviewers

• chengyupku

Poem

🐰 Away with the dynamic, away with the sprawl,
The shapes now rest simple, no tailsplit at all.
A cleanup most tidy, a feature to prune,
The rabbit approves—dynamic's marched off too soon! 🌙

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and accurately summarizes the main change: removing two legacy PassConfig options (kDisableDynamicTailSplit and kDynamicAlignment) as part of a refactoring effort.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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📜 Recent review details

Configuration used: defaults

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 7e8d1f8 and 39ad712.

📒 Files selected for processing (7)

• examples/dynamic_shape/example_dynamic.py (0 hunks)
• examples/dynamic_shape/test_example_dynamic.py (0 hunks)
• src/op/builtin.cc (0 hunks)
• src/op/builtin.h (0 hunks)
• testing/python/dynamic/test_tilelang_dynamic_symbolic.py (0 hunks)
• testing/python/dynamic/test_tilelang_dynamic_symbolic_bench.py (0 hunks)
• tilelang/transform/pass_config.py (0 hunks)

💤 Files with no reviewable changes (7)

• examples/dynamic_shape/test_example_dynamic.py
• src/op/builtin.h
• tilelang/transform/pass_config.py
• testing/python/dynamic/test_tilelang_dynamic_symbolic.py
• src/op/builtin.cc
• examples/dynamic_shape/example_dynamic.py
• testing/python/dynamic/test_tilelang_dynamic_symbolic_bench.py

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (3)

• GitHub Check: Test for Python 3.12 with CUDA-12.8 (on self-hosted-nvidia)
• GitHub Check: Test for Python 3.12 with Nightly-ROCm-7.1 (on self-hosted-amd)
• GitHub Check: Test for Python 3.12 with Metal (on macos-latest)

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