Landing: 7c328e9eeadf

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Project / Subsystem

gcc / gcc

Date

2026-05-17

Author

Andrew Pinski

Commit

7c328e9eeadf66f33758764d24151b9eb680c1f0

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: gcc
patch_id: —
commit_hash: 7c328e9eeadf66f33758764d24151b9eb680c1f0
source_type: github
headline: Switch-conv: Stabilize qsort in case_bit_test by using target BB index.
tldr: The switch conversion code now uses the target basic block index to stabilize qsort, removing the need for a label in `case_bit_test`.
author: Andrew Pinski
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • optimization
• switch statement
• code generation
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/7c328e9eeadf66f33758764d24151b9eb680c1f0
date: 2026-05-17T00:00:00.000Z

The switch conversion code now uses the target basic block’s index to ensure a stable sort order in case_bit_test, instead of a label. This simplifies the code by removing the label field from case_bit_test. This change should have no user-visible impact, but improves internal code structure.