Landing: be9d4883aaac

← All landings

Project / Subsystem

gcc / avr

Date

2026-08-23

Author

Georg-Johann Lay

Commit

be9d4883aaaccecee8022e2a47986e0aadc729f3

Source

github

Perf win

Breaking

View on GitHub →

All attributes

project: gcc
subsystem: avr
patch_id: —
commit_hash: be9d4883aaaccecee8022e2a47986e0aadc729f3
source_type: github
headline: AVR object files tagged with double/long double bit sizes.
tldr: AVR object files now include .gnu_attribute tags for double and long double precision.
author: Georg-Johann Lay
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • avr
• compiler
• object file
• floating-point
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/be9d4883aaaccecee8022e2a47986e0aadc729f3
date: 2026-08-23T00:00:00.000Z

This patch introduces .gnu_attribute tags to AVR object files, specifically indicating the bit sizes used for double (8 bits) and long double (12 bits). This tagging is performed by new mini-passes that scan the code and varpool for the presence of these types. This information helps manage shared multilibs and ensures correct linking when different floating-point precisions are involved.