---
id: pr-pytorch-177144
repo: pytorch/pytorch
pr: 177144
title: '[Inductor] Don''t unfuse addmm for bf16/fp16 to avoid precision loss'
author: pytorchbot
date: '2026-03-11'
url: https://github.com/pytorch/pytorch/pull/177144
source_category: upstream-code
architectures:
- sm100
tags:
- gemm
techniques: []
hardware_features: []
kernel_types:
- gemm
languages:
- python
captured_at: '2026-04-17'
status: merged
merge_sha: e04ddeaf45651e14b819f232af8e19d5615adfcd
inclusion_reason: kernel file changes
changed_paths:
- test/inductor/test_pattern_matcher.py
- torch/_inductor/fx_passes/post_grad.py
head_ref_oid: 4efd3551db883c9859ed21c774074cae24e7e8fc
artifact_dir: evidence/pull-bundles/pytorch/gh-177144
---
# [Inductor] Don't unfuse addmm for bf16/fp16 to avoid precision loss

- Repository: `pytorch/pytorch`
- PR: [177144](https://github.com/pytorch/pytorch/pull/177144)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `test/inductor/test_pattern_matcher.py`
- `torch/_inductor/fx_passes/post_grad.py`

## Evidence Bundle

`evidence/pull-bundles/pytorch/gh-177144`
