Horton

Refactor detection of x86 ZMM registers

John Naylor <john.naylor@postgresql.org>

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Commit: 51bb4a58ed23cb228e5dd2e5971843e785f4d913
Author: John Naylor <john.naylor@postgresql.org>
Date: 2026-02-28T09:28:09Z
Releases: 19 (unreleased) 
Refactor detection of x86 ZMM registers

- Call _xgetbv within x86_set_runtime_features rather than in a
  separate function
- Use symbols for XCR mask bits rather than a magic constant

A future commit will build on this to detect YMM registers without
code duplication.

Reviewed-by: Zsolt Parragi <zsolt.parragi@percona.com>
Discussion: https://postgr.es/m/CANWCAZbgEUFw7LuYSVeJ=Tj98R5HoOB1Ffeqk3aLvbw5rU5NTw@mail.gmail.com

Files

PathChange+/−
src/port/pg_cpu_x86.c modified +27 −16

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