---
id: pr-triton-10163
repo: triton-lang/triton
pr: 10163
title: '[BACKEND] Enable i16 descriptor gather/scatter indices on NVIDIA'
author: ThomasRaoux
date: '2026-05-04'
url: https://github.com/triton-lang/triton/pull/10163
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
techniques: []
hardware_features:
- fp4
kernel_types: []
languages:
- triton
captured_at: '2026-05-16'
status: merged
merge_sha: dfd7c5246ad2c1f2e775b1c9983b8ce49c073b05
inclusion_reason: Search-matched CUDA kernel optimization PR; materialize diff/source before synthesis.
changed_paths:
- include/triton/Dialect/TritonNvidiaGPU/Transforms/TMAUtilities.h
- lib/Dialect/TritonGPU/Transforms/Pipeliner/LowerLoops.cpp
- lib/Dialect/TritonGPU/Transforms/Pipeliner/TMAStoresPipeline.cpp
- lib/Dialect/TritonNvidiaGPU/Transforms/TMALowering.cpp
- lib/Dialect/TritonNvidiaGPU/Transforms/TMAUtilities.cpp
- python/test/unit/language/test_tensor_descriptor.py
- python/triton/language/semantic.py
- test/TritonGPU/amd/amd-convert-tensor-ops.mlir
artifact_dir: evidence/pull-bundles/triton/gh-10163
head_ref_oid: af52a3b01ce21b71bc53f441da8fc378a954bb92
---
# [BACKEND] Enable i16 descriptor gather/scatter indices on NVIDIA

- Repository: `triton-lang/triton`
- PR: [10163](https://github.com/triton-lang/triton/pull/10163)
- 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

- `include/triton/Dialect/TritonNvidiaGPU/Transforms/TMAUtilities.h`
- `lib/Dialect/TritonGPU/Transforms/Pipeliner/LowerLoops.cpp`
- `lib/Dialect/TritonGPU/Transforms/Pipeliner/TMAStoresPipeline.cpp`
- `lib/Dialect/TritonNvidiaGPU/Transforms/TMALowering.cpp`
- `lib/Dialect/TritonNvidiaGPU/Transforms/TMAUtilities.cpp`
- `python/test/unit/language/test_tensor_descriptor.py`
- `python/triton/language/semantic.py`
- `test/TritonGPU/amd/amd-convert-tensor-ops.mlir`

## Evidence Bundle

`evidence/pull-bundles/triton/gh-10163`
