Landing: e02ce3b8c457

← All landings

Project / Subsystem

gcc / gcc

Date

2026-08-04

Author

Andrew MacLeod

Commit

e02ce3b8c4574c81a943eb1084b0e0bf6a9955d5

Source

github

Perf win

Breaking

View on GitHub →

All attributes

project: gcc
subsystem: gcc
patch_id: —
commit_hash: e02ce3b8c4574c81a943eb1084b0e0bf6a9955d5
source_type: github
headline: Provide a DCE no-delete option.
tldr: GCC's Dead Code Elimination pass now offers a 'no-delete' option to replace dead statements with assignments to zero.
author: Andrew MacLeod
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • compiler
• optimization
• debugging
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/e02ce3b8c4574c81a943eb1084b0e0bf6a9955d5
date: 2026-08-04T00:00:00.000Z

A new option has been added to GCC’s Dead Code Elimination (DCE) pass, allowing it to replace dead statements with assignments to zero instead of completely removing them. This change provides more control over the optimization process, particularly useful for debugging or specific analysis scenarios where the presence of zero assignments is informative.