Landing: d42b8b15aa9f

← All landings

Project / Subsystem

gcc / tree-optimization

Date

2026-08-14

Author

Richard Biener

Commit

d42b8b15aa9f246293c976f141df1c1936d93dc6

Source

github

Perf win

Breaking

View on GitHub →

All attributes

project: gcc
subsystem: tree-optimization
patch_id: —
commit_hash: d42b8b15aa9f246293c976f141df1c1936d93dc6
source_type: github
headline: Fix ICE with SLP schedule at explicit region start
tldr: Correctly handles SLP scheduling at region starts to prevent ICEs.
author: Richard Biener
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • optimization
• vectorization
• ICE
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/d42b8b15aa9f246293c976f141df1c1936d93dc6
date: 2026-08-14T00:00:00.000Z

This commit addresses an ICE (Internal Compiler Error) that occurred during SLP (Sliding Window Parallelization) scheduling at the start of explicit regions. The issue stemmed from using a random statement as a marker, which could be a control statement. The fix replaces this with NULL, adhering to documentation and resolving the ICE. A new test case is included.