From: Victor Do Nascimento <victor.donascimento@arm.com>
To: <gcc-patches@gcc.gnu.org>
Cc: <kyrylo.tkachov@arm.com>, <richard.sandiford@arm.com>,
<Richard.Earnshaw@arm.com>,
Victor Do Nascimento <victor.donascimento@arm.com>
Subject: [PATCH v2 0/2] Libatomic: Add LSE128 atomics support for AArch64
Date: Mon, 13 Nov 2023 11:37:31 +0000 [thread overview]
Message-ID: <20231113113744.70784-1-victor.donascimento@arm.com> (raw)
v2 updates:
Move the previously unguarded definition of IFUNC_NCONDN(N) in
`host-config.h' to within the scope of `#ifdef HWCAP_USCAP'.
This is done so that its definition is not only contingent on the
value of N but also on the definition of HWCAP_USCAP as it was found
that building on systems where !HWCAP_USCAP and N == 16 led to a
previously-undetected build error.
---
Building upon Wilco Dijkstra's work on AArch64 128-bit atomics for
Libatomic, namely the patches from [1] and [2], this patch series
extends the library's capabilities to dynamically select and emit
Armv9.4-a LSE128 implementations of atomic operations via ifuncs at
run-time whenever architectural support is present.
Regression tested on aarch64-linux-gnu target with LSE128-support.
[1] https://gcc.gnu.org/pipermail/gcc-patches/2023-June/620529.html
[2] https://gcc.gnu.org/pipermail/gcc-patches/2023-August/626358.html
Victor Do Nascimento (2):
libatomic: atomic_16.S: Improve ENTRY, END and ALIAS macro interface
libatomic: Enable LSE128 128-bit atomics for armv9.4-a
libatomic/Makefile.am | 3 +
libatomic/Makefile.in | 1 +
libatomic/acinclude.m4 | 19 ++
libatomic/auto-config.h.in | 3 +
libatomic/config/linux/aarch64/atomic_16.S | 315 ++++++++++++++-----
libatomic/config/linux/aarch64/host-config.h | 27 +-
libatomic/configure | 59 +++-
libatomic/configure.ac | 1 +
8 files changed, 352 insertions(+), 76 deletions(-)
--
2.42.0
next reply other threads:[~2023-11-13 11:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-13 11:37 Victor Do Nascimento [this message]
2023-11-13 11:37 ` [PATCH v2 1/2] libatomic: atomic_16.S: Improve ENTRY, END and ALIAS macro interface Victor Do Nascimento
2023-11-29 13:44 ` Richard Earnshaw
2023-11-13 11:37 ` [PATCH v2 2/2] libatomic: Enable LSE128 128-bit atomics for armv9.4-a Victor Do Nascimento
2023-11-29 15:15 ` Richard Earnshaw
2023-12-08 14:51 ` Szabolcs Nagy
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