---
id: pr-tilelang-1726
repo: tile-ai/tilelang
pr: 1726
title: '[Bugfix] Fix incorrect alignment of vectorized subtype'
author: LeiWang1999
date: '2026-01-23'
url: https://github.com/tile-ai/tilelang/pull/1726
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
techniques:
- vectorized-loads
hardware_features:
- fp4
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 5fe8b84313083d0a4035849c9282f06586c93d58
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- src/tl_templates/cuda/cuda_fp4.h
artifact_dir: evidence/pull-bundles/tilelang/gh-1726
head_ref_oid: 75daee779412a921d3d0d338f3b773ccc525b964
---
# [Bugfix] Fix incorrect alignment of vectorized subtype

- Repository: `tile-ai/tilelang`
- PR: [1726](https://github.com/tile-ai/tilelang/pull/1726)
- 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/tl_templates/cuda/cuda_fp4.h`

## Evidence Bundle

`evidence/pull-bundles/tilelang/gh-1726`
