---
id: pr-tilelang-1962
repo: tile-ai/tilelang
pr: 1962
title: '[Bugfix] Fix double buffer versioning when TMA is used without warp specialization'
author: LeiWang1999
date: '2026-03-24'
url: https://github.com/tile-ai/tilelang/pull/1962
source_category: upstream-code
architectures:
- sm100
tags:
- fused-op
techniques:
- async-copy
- kernel-fusion
- warp-specialization
hardware_features:
- tma
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: a2d6e01866eb05419a780d50c845773037d15ebd
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- src/op/builtin.h
- src/transform/lower_tile_op.cc
- src/transform/multi_version_buffer_rewriter.cc
- testing/python/jit/test_tilelang_jit_cutedsl.py
- testing/python/transform/test_tilelang_transform_lower_shared_barrier.py
- tilelang/engine/phase.py
- tilelang/transform/__init__.py
artifact_dir: evidence/pull-bundles/tilelang/gh-1962
head_ref_oid: 875c62c4addebc58a8b5b84d41f9c6980c79acfc
---
# [Bugfix] Fix double buffer versioning when TMA is used without warp specialization

- Repository: `tile-ai/tilelang`
- PR: [1962](https://github.com/tile-ai/tilelang/pull/1962)
- Decision: `Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.`
- Reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.

## Changed Paths

- `src/op/builtin.h`
- `src/transform/lower_tile_op.cc`
- `src/transform/multi_version_buffer_rewriter.cc`
- `testing/python/jit/test_tilelang_jit_cutedsl.py`
- `testing/python/transform/test_tilelang_transform_lower_shared_barrier.py`
- `tilelang/engine/phase.py`
- `tilelang/transform/__init__.py`

## Evidence Bundle

`evidence/pull-bundles/tilelang/gh-1962`
