Landing: bef9e8e99a52

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Project / Subsystem

gcc / gcc/rs6000

Date

2026-07-22

Author

Manjunath S Matti

Commit

bef9e8e99a52584523554c354cebf2a67db9f5e8

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: gcc/rs6000
patch_id: —
commit_hash: bef9e8e99a52584523554c354cebf2a67db9f5e8
source_type: github
headline: Add __dmr1024 opaque type for dense math registers
tldr: Introduces a new 1024-bit opaque type for the Dense Math Facility on POWER.
author: Manjunath S Matti
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • rs6000
• powerpc
• new-type
• dense-math
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/bef9e8e99a52584523554c354cebf2a67db9f5e8
date: 2026-07-22T00:00:00.000Z

This commit registers __dmr1024 as a new 1024-bit opaque built-in type for the rs6000 backend. It uses TDOmode and is intended to hold data for the Dense Math Facility when the -mdense-math option is enabled, with specific handling for type mangling and invalid conversions.