Landing: ea48f0c5493c

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Project / Subsystem

gcc / dom

Date

2026-10-04

Author

Aldy Hernandez

Commit

ea48f0c5493cb0829127ec12d7af2ba3c5c11c97

Source

github

Perf win

Breaking

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project: gcc
subsystem: dom
patch_id: —
commit_hash: ea48f0c5493cb0829127ec12d7af2ba3c5c11c97
source_type: github
headline: DOM pass replaces test_for_singularity with simplify_using_ranges
tldr: Dominator analysis pass simplifies code by using a more capable range-based simplification function, removing redundant logic.
author: Aldy Hernandez
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • optimization
• dominator analysis
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/ea48f0c5493cb0829127ec12d7af2ba3c5c11c97
date: 2026-10-04T00:00:00.000Z

The Dominator analysis (DOM) pass in GCC has been updated to replace its internal test_for_singularity function with the more powerful simplify_using_ranges. This change leverages existing range-based simplification capabilities to achieve the same goal, leading to slightly smarter code analysis. The update is part of an ongoing effort to refactor and improve the DOM pass.