Landing: 5919b5e6c0d6

← All landings

Project / Subsystem

gcc / gcc

Date

2026-04-17

Author

Andre Vieira

Commit

5919b5e6c0d63683129647b412c3b851feb3d2dc

Source

github

Impact

7/10

Perf win

Breaking

View on GitHub →

All attributes

project: gcc
subsystem: gcc
patch_id: —
commit_hash: 5919b5e6c0d63683129647b412c3b851feb3d2dc
source_type: github
headline: ARM, BitInt: Add hard-float ABI support for exception and rounding modes.
tldr: Adds support for handling floating-point exceptions and rounding modes with the hard-float ABI on ARM, used by BitInt software emulation for floating-point con…
why_it_matters: Enables correct floating-point exception handling and rounding for _BitInt software emulation on ARM platforms using the hard-float ABI, ensuring accurate and reliable computations.
author: Andre Vieira
impact_score: 7
impact_rationale: Adds support for important features in a specific architecture and ABI, which can affect the correctness of programs using floating point operations.
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • ARM
• BitInt
• floating-point
• ABI
• exception handling
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/5919b5e6c0d63683129647b412c3b851feb3d2dc
date: 2026-04-17T00:00:00.000Z

This commit introduces support for FP_HANDLE_EXCEPTIONS and FP_ROUNDMODE when using the hard-float ABI on ARM. This is necessary for _BitInt software emulation to correctly handle floating-point conversions and throw exceptions when needed. A new file, sfp-exceptions.c, is added, and the necessary macros and declarations are included in sfp-machine.h.