Landing: 14375d01d76e

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Project / Subsystem

gcc / gcc/rs6000

Date

2026-07-02

Author

Avinash Jayakar

Commit

14375d01d76ebed8d414eef0139a8287cda29c51

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: gcc/rs6000
patch_id: —
commit_hash: 14375d01d76ebed8d414eef0139a8287cda29c51
source_type: github
headline: rs6000: Add %wD constraint and predicate for accumulators
tldr: Added new constraint and predicate for accumulator registers on future PowerPC processors.
author: Avinash Jayakar
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • rs6000
• powerpc
• compiler
• instruction selection
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/14375d01d76ebed8d414eef0139a8287cda29c51
date: 2026-07-02T00:00:00.000Z

Introduced a new constraint (%wD) and predicate for accumulator registers, preparing for future PowerPC processors that may feature dedicated registers for dense math and MMA operations. This change enables the compiler to utilize these specialized registers for enhanced performance in matrix and cryptographic computations.