# SIM001: unused-functions

**Code:** `SIM001`

**Name:** `unused-functions`

**Severity:** info

**Category:** spec

**Target:** model

**Fixable:** 🔧 Yes

## Message

Model contains functions that are not referenced by any node.

## Suggestion

Remove unused functions with `--fix` or `RemoveUnusedFunctionsPass`.

## Details

Functions defined in the model that are not called by any node in the
graph or other functions are dead code. Removing them reduces model
size and improves clarity.