Landing: cfd84583a556

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Project / Subsystem

gcc / phiopt

Date

2026-08-08

Author

Andrea Pinski

Commit

cfd84583a556889da6d8e777ab3a9e24557f9a02

Source

github

Perf win

Breaking

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project: gcc
subsystem: phiopt
patch_id: —
commit_hash: cfd84583a556889da6d8e777ab3a9e24557f9a02
source_type: github
headline: phiopt: Fix up factoring out loads for REF_REVERSE_STORAGE_ORDER [PR126729]
tldr: Fixes an oversight in conditional load factoring that caused storage order information to be lost or mismatched.
author: Andrea Pinski
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • optimization
• bugfix
• phiopt
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/cfd84583a556889da6d8e777ab3a9e24557f9a02
date: 2026-08-08T00:00:00.000Z

This commit addresses an issue in the phiopt optimization pass where the factor_out_conditional_load function did not correctly handle the REF_REVERSE_STORAGE_ORDER attribute. This oversight could lead to the loss of this attribute or incorrect handling when conditional loads were factored out. The fix ensures that this storage order information is preserved and correctly matched, preventing potential code generation errors.