Landing: 8679354c031c

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Project / Subsystem

gcc / avr/libgcc

Date

2026-07-22

Author

Georg-Johann Lay

Commit

8679354c031c9db739948881081cea342779fc6f

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: avr/libgcc
patch_id: —
commit_hash: 8679354c031c9db739948881081cea342779fc6f
source_type: github
headline: AVR: Tweak lib1funcs-fixed.S::__mulQ64_work once more.
tldr: Further optimizes the `__mulQ64_work` function in AVR libgcc by removing one instruction.
author: Georg-Johann Lay
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • avr
• libgcc
• optimization
• code size
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/8679354c031c9db739948881081cea342779fc6f
date: 2026-07-22T00:00:00.000Z

The __mulQ64_work function within the AVR lib1funcs-fixed.S file has been further optimized to shave off a single instruction. This minuscule change aims to reduce the code size and potentially improve the execution speed of this internal multiplication helper function on AVR microcontrollers.