Landing: abbc5b3ee124

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Project / Subsystem

gcc / rs6000

Date

2026-07-23

Author

Surya Kumari Jangala

Commit

abbc5b3ee1241069e011b51174e229bf523bcc6a

Source

github

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Breaking

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project: gcc
subsystem: rs6000
patch_id: —
commit_hash: abbc5b3ee1241069e011b51174e229bf523bcc6a
source_type: github
headline: rs6000: Add Dense Math Register extraction builtins.
tldr: New builtins for PowerPC architecture allow extracting data from 1024-bit Dense Math Registers.
author: Surya Kumari Jangala
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • rs6000
• powerpc
• hardware
• builtin
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/abbc5b3ee1241069e011b51174e229bf523bcc6a
date: 2026-07-23T00:00:00.000Z

Two new builtins, __builtin_dmr_extract512 and __builtin_disassemble_dmr, have been added for the rs6000 (PowerPC) architecture. These builtins facilitate the extraction of data from 1024-bit Dense Math Registers (DMRs) into 128-bit vectors, enhancing support for Dense Math operations. New test cases are included to verify their functionality.