Landing: c033e4be4953

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Project / Subsystem

gcc / avr/libgcc

Date

2026-07-22

Author

Georg-Johann Lay

Commit

c033e4be4953b5924a67a2aad7fb3131704fa29c

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: avr/libgcc
patch_id: —
commit_hash: c033e4be4953b5924a67a2aad7fb3131704fa29c
source_type: github
headline: AVR: Use more .branch_plus in lib1funcs.S
tldr: Replaces some jump instructions with `.branch_plus` in AVR libgcc functions, potentially improving code density.
author: Georg-Johann Lay
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • avr
• libgcc
• code size
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/c033e4be4953b5924a67a2aad7fb3131704fa29c
date: 2026-07-22T00:00:00.000Z

The AVR lib1funcs.S file has been updated to use the .branch_plus pseudo-instruction in two additional functions: __mulqihi3 and __mulsidi3. This change, along with minor comment adjustments, aims to optimize code generation for these multiplication functions on AVR microcontrollers by leveraging a more compact branching mechanism.