Landing: 896c822afed0

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Project / Subsystem

gcc / i386

Date

2026-05-28

Author

Jakub Jelinek

Commit

896c822afed0aad4c0ca761777cdc5f0085bbce0

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: i386
patch_id: —
commit_hash: 896c822afed0aad4c0ca761777cdc5f0085bbce0
source_type: github
headline: i386: Emit 'lea' instruction directly to avoid ICE.
tldr: The i386 backend now directly emits a 'lea' instruction in certain cases to avoid an internal compiler error.
author: Jakub Jelinek
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • i386
• codegen
• bugfix
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/896c822afed0aad4c0ca761777cdc5f0085bbce0
date: 2026-05-28T00:00:00.000Z

The i386 backend could encounter an internal compiler error (ICE) when combining certain address calculations, especially involving subregisters. This commit fixes the ICE by directly emitting a ‘lea’ instruction, ensuring the address calculation is handled correctly. This resolves a codegen issue that could lead to incorrect or non-compiling code.