---
id: pr-tilelang-1724
repo: tile-ai/tilelang
pr: 1724
title: '[Enhancement] Legalize subtype access'
author: LeiWang1999
date: '2026-01-23'
url: https://github.com/tile-ai/tilelang/pull/1724
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
techniques: []
hardware_features:
- fp4
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 3209b51b4f08db5a80e45ca4392fe9dfebe8a185
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- src/target/codegen_cuda.cc
- src/target/codegen_cuda.h
- src/tl_templates/cuda/cuda_fp4.h
artifact_dir: evidence/pull-bundles/tilelang/gh-1724
head_ref_oid: b19297604e6479e91e205989f498285df8ede064
---
# [Enhancement] Legalize subtype access

- Repository: `tile-ai/tilelang`
- PR: [1724](https://github.com/tile-ai/tilelang/pull/1724)
- 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/target/codegen_cuda.cc`
- `src/target/codegen_cuda.h`
- `src/tl_templates/cuda/cuda_fp4.h`

## Evidence Bundle

`evidence/pull-bundles/tilelang/gh-1724`
