Landing: a0dc39b430da

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Project / Subsystem

gcc / rs6000

Date

2026-07-15

Author

Jeevitha

Commit

a0dc39b430da71ec7b42a66b989fe800a62efca2

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: rs6000
patch_id: —
commit_hash: a0dc39b430da71ec7b42a66b989fe800a62efca2
source_type: github
headline: rs6000: Add TDOmode move patterns
tldr: GCC gains support for new 1024-bit Dense Math Register (TDOmode) moves on PowerPC.
author: Jeevitha
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • rs6000
• powerpc
• avx512
• vector
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/a0dc39b430da71ec7b42a66b989fe800a62efca2
date: 2026-07-15T00:00:00.000Z

GCC’s rs6000 backend now supports move operations for the new TDOmode opaque type, which represents 1024-bit Dense Math Registers intended for future Power processors. This includes implementing patterns for moves between memory, VSX registers, and Dense Math Registers, leveraging multi-register splitting and specific Dense Math instructions like dmmr, dm_insert1024, and dm_extract512.