Landing: 82e4ddc02061

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Project / Subsystem

gcc / aarch64

Date

2026-09-01

Author

Julio Sotoriva De Bastiani

Commit

82e4ddc02061b325735383c6cd4686a7d68230cf

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: aarch64
patch_id: —
commit_hash: 82e4ddc02061b325735383c6cd4686a7d68230cf
source_type: github
headline: aarch64: Fix builtin folding for svwhile* builtins
tldr: Corrects an ICE in aarch64 SVE builtins when folding predicate-as-counter operations.
author: Julio Sotoriva De Bastiani
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • aarch64
• compiler bug
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/82e4ddc02061b325735383c6cd4686a7d68230cf
date: 2026-09-01T00:00:00.000Z

An ICE (Internal Compiler Error) in the aarch64 backend is fixed by correctly handling the svcount_t type in svwhilel*_c* builtins. The issue occurred when these builtins were incorrectly folded as predicate-as-mask operations. The fix ensures proper handling for predicate-as-counter scenarios and punts on unsupported cases.