Landing: 8f449d2752ca

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Project / Subsystem

gcc / gcc

Date

2026-02-11

Author

Andrew MacLeod

Commit

8f449d2752caff3f8e669b8a9b903fac2eadd1fa

Source

github

Perf win

Yes

Breaking

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All attributes

project: gcc
subsystem: gcc
patch_id: —
commit_hash: 8f449d2752caff3f8e669b8a9b903fac2eadd1fa
source_type: github
headline: More memory efficient prange_storage
tldr: The `prange_storage` class now uses a more memory-efficient storage format that only allocates the required number of words.
author: Andrew MacLeod
outcome: committed
performance_win: true
breaking_change: false
series_id: —
series_parts: []
tags: • gcc
• value-range
• optimization
• memory
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/8f449d2752caff3f8e669b8a9b903fac2eadd1fa
date: 2026-02-11T00:00:00.000Z

The prange_storage class in GCC’s value range propagation infrastructure is now more memory efficient. It uses a new prange_format class to store only the required words to storage. This reduces memory consumption, improving overall performance, particularly when dealing with many variables with restricted ranges.