| From: | John Naylor <john(dot)naylor(at)postgresql(dot)org> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Refactor detection of x86 ZMM registers |
| Date: | 2026-02-28 09:30:19 |
| Message-ID: | E1vwGeR-001X6d-28@gemulon.postgresql.org |
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| Lists: | pgsql-committers |
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(dot)parragi(at)percona(dot)com>
Discussion: https://postgr.es/m/CANWCAZbgEUFw7LuYSVeJ=Tj98R5HoOB1Ffeqk3aLvbw5rU5NTw@mail.gmail.com
Branch
------
master
Details
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https://git.postgresql.org/pg/commitdiff/51bb4a58ed23cb228e5dd2e5971843e785f4d913
Modified Files
--------------
src/port/pg_cpu_x86.c | 43 +++++++++++++++++++++++++++----------------
1 file changed, 27 insertions(+), 16 deletions(-)
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