---
id: pr-tilelang-1947
repo: tile-ai/tilelang
pr: 1947
title: Support packed subtype views during layout reshape
author: LeiWang1999
date: '2026-03-19'
url: https://github.com/tile-ai/tilelang/pull/1947
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- mxfp4
- schedule
techniques: []
hardware_features:
- fp4
- mxfp4
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 5a538f3b374d9a723d4b7c4f18bf3f9153b09e85
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- src/layout/layout.cc
- src/layout/layout.h
- src/transform/layout_inference.cc
- testing/python/language/test_tilelang_language_view.py
artifact_dir: evidence/pull-bundles/tilelang/gh-1947
head_ref_oid: d8cd117e17e96ee33874a06ee1783088b9ba4635
---
# Support packed subtype views during layout reshape

- Repository: `tile-ai/tilelang`
- PR: [1947](https://github.com/tile-ai/tilelang/pull/1947)
- 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/layout/layout.cc`
- `src/layout/layout.h`
- `src/transform/layout_inference.cc`
- `testing/python/language/test_tilelang_language_view.py`

## Evidence Bundle

`evidence/pull-bundles/tilelang/gh-1947`
