Landing: 1a751916c6d5

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Project / Subsystem

gcc / phiopt

Date

2026-07-23

Author

Andrea Pinski

Commit

1a751916c6d506ba49b318d38675184191647bf8

Source

github

Perf win

Yes

Breaking

No

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All attributes

project: gcc
subsystem: phiopt
patch_id: —
commit_hash: 1a751916c6d506ba49b318d38675184191647bf8
source_type: github
headline: phiopt: Add TARGET_MEM_REF support to factoring of loads.
tldr: Improves load factoring optimization by supporting `TARGET_MEM_REF` on certain memory accesses.
author: Andrea Pinski
outcome: committed
performance_win: true
breaking_change: false
series_id: —
series_parts: []
tags: • optimization
• phiopt
• tree-ssa
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/1a751916c6d506ba49b318d38675184191647bf8
date: 2026-07-23T00:00:00.000Z

This commit enhances the factor_out_conditional_load optimization pass in GCC by adding support for TARGET_MEM_REF, which represents memory references with target-specific constraints. Previously, this optimization could not handle TARGET_MEM_REF instances, leading to less optimal code generation. The update allows the pass to factor out loads that use TARGET_MEM_REF under specific conditions, improving generated code quality and achieving comparable performance to LLVM for certain benchmarks.