Alexander MonakovandRichard Henderson f28e0bbefa util/bufferiszero: Optimize SSE2 and AVX2 variants ...

Increase unroll factor in SIMD loops from 4x to 8x in order to move
their bottlenecks from ALU port contention to load issue rate (two loads
per cycle on popular x86 implementations).

Avoid using out-of-bounds pointers in loop boundary conditions.

Follow SSE2 implementation strategy in the AVX2 variant. Avoid use of
PTEST, which is not profitable there (like in the removed SSE4 variant).

Signed-off-by: Alexander Monakov <amonakov@ispras.ru>
Signed-off-by: Mikhail Romanov <mmromanov@ispras.ru>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240206204809.9859-6-amonakov@ispras.ru>

2024-05-03 08:03:05 -07:00

..

aio-posix.c

iothread: Remove unused Error** argument in aio_context_set_aio_params

2024-01-08 10:45:34 -05:00

aio-posix.h

aio: remove aio_disable_external() API

2023-05-30 17:37:26 +02:00

aio-wait.c

…

aio-win32.c

iothread: Remove unused Error** argument in aio_context_set_aio_params

2024-01-08 10:45:34 -05:00

aiocb.c

…

async.c

util/async: Only call icount_notify_exit() if icount is enabled

2024-01-19 12:28:59 +01:00

atomic64.c

…

base64.c

…

bitmap.c

…

bitops.c

…

block-helpers.c

…

block-helpers.h

…

buffer.c

…

bufferiszero.c

util/bufferiszero: Optimize SSE2 and AVX2 variants

2024-05-03 08:03:05 -07:00

cacheflush.c

util/cacheflush: Avoid possible redundant dcache flush on Darwin

2023-06-13 11:28:58 +02:00

chardev_open.c

util/char_dev: Add open_cdev()

2023-12-19 19:03:38 +01:00

compatfd.c

…

coroutine-sigaltstack.c

osdep: set _FORTIFY_SOURCE=2 when optimization is enabled

2023-10-04 09:52:06 -04:00

coroutine-ucontext.c

coroutine-ucontext: Save fake stack for pooled coroutine

2024-01-22 11:00:12 -05:00

coroutine-windows.c

…

cpuinfo-aarch64.c

Merge tag 'pull-tcg-20230915-2' of https://gitlab.com/rth7680/qemu into staging

2023-09-19 13:20:54 -04:00

cpuinfo-i386.c

host/include/i386: Implement clmul.h

2023-09-15 13:57:00 +00:00

cpuinfo-loongarch.c

util: Add cpuinfo for loongarch64

2023-11-06 08:27:21 -08:00

cpuinfo-ppc.c

util: fix build with musl libc on ppc64le

2024-01-11 08:48:16 +11:00

crc32c.c

…

crc-ccitt.c

…

cutils.c

cutils: Fix get_relocated_path on Windows

2023-10-19 23:13:27 +02:00

dbus.c

…

defer-call.c

util/defer-call: move defer_call() to util/

2023-10-31 15:41:42 +01:00

drm.c

…

envlist.c

…

error-report.c

…

error.c

…

event_notifier-posix.c

…

event_notifier-win32.c

…

fdmon-epoll.c

aio: remove aio_disable_external() API

2023-05-30 17:37:26 +02:00

fdmon-io_uring.c

remove unnecessary casts from uintptr_t

2024-01-18 10:43:51 +01:00

fdmon-poll.c

aio: remove aio_disable_external() API

2023-05-30 17:37:26 +02:00

fifo8.c

util/fifo8: Introduce fifo8_peek_buf()

2024-01-10 06:58:50 +00:00

filemonitor-inotify.c

util/filemonitor-inotify.c: spelling fix: kenel

2023-11-15 12:06:05 +03:00

filemonitor-stub.c

…

getauxval.c

…

guest-random.c

util/guest-random: Clean up global variable shadowing

2023-10-06 13:27:48 +02:00

hbitmap.c

…

hexdump.c

…

host-utils.c

…

id.c

…

int128.c

…

interval-tree.c

util/interval-tree: Check root for null in interval_tree_iter_first

2023-08-09 09:26:32 -07:00

iov.c

util/iov: Avoid dynamic stack allocation

2023-09-07 20:32:11 -05:00

iova-tree.c

…

keyval.c

…

lockcnt.c

…

log.c

plugins: Replace pr_ops with a proper debug dump flag

2024-04-30 16:12:05 -07:00

main-loop.c

system/cpus: rename qemu_mutex_lock_iothread() to bql_lock()

2024-01-08 10:45:43 -05:00

memalign.c

…

memfd.c

…

meson.build

yank: only build if needed

2024-04-18 11:17:27 +02:00

mmap-alloc.c

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module.c

…

notify.c

notify: pass error to notifier with return

2024-02-28 11:31:28 +08:00

nvdimm-utils.c

…

osdep.c

…

oslib-posix.c

oslib-posix: fix memory leak in touch_all_pages

2024-03-08 15:51:22 +01:00

oslib-win32.c

oslib-posix: initialize backend memory objects in parallel

2024-02-06 08:15:22 +01:00

path.c

…

qdist.c

util: spelling fixes

2023-08-31 19:47:43 +02:00

qemu-co-shared-resource.c

…

qemu-co-timeout.c

…

qemu-config.c

util/qemu-config: Extract QMP commands to qemu-config-qmp.c

2024-04-18 11:17:27 +02:00

qemu-coroutine-io.c

aio: remove aio_disable_external() API

2023-05-30 17:37:26 +02:00

qemu-coroutine-lock.c

atomics: eliminate mb_read/mb_set

2023-06-06 09:42:14 +02:00

qemu-coroutine-sleep.c

…

qemu-coroutine.c

coroutine: reserve 5,000 mappings

2024-03-21 13:14:30 -04:00

qemu-option.c

qapi: Inline and remove QERR_INVALID_PARAMETER definition

2024-04-24 09:50:58 +02:00

qemu-print.c

…

qemu-progress.c

…

qemu-sockets.c

qapi: Improve documentation of file descriptor socket addresses

2024-02-12 10:04:32 +01:00

qemu-thread-common.h

…

qemu-thread-posix.c

…

qemu-thread-win32.c

…

qemu-timer-common.c

…

qemu-timer.c

…

qht.c

…

qsp.c

system/cpus: rename qemu_mutex_lock_iothread() to bql_lock()

2024-01-08 10:45:43 -05:00

qtree.c

…

range.c

util/range.c: spelling fix: inbetween

2023-11-15 12:06:05 +03:00

rcu.c

Replace "iothread lock" with "BQL" in comments

2024-01-08 10:45:43 -05:00

readline.c

…

reserved-region.c

util/reserved-region: Add new ReservedRegion helpers

2023-11-03 09:20:31 +01:00

selfmap.c

util/selfmap: Use dev_t and ino_t in MapInfo

2023-09-01 13:34:03 -07:00

stats64.c

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sys_membarrier.c

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systemd.c

…

thread-context.c

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thread-pool.c

virtio: use defer_call() in virtio_irqfd_notify()

2023-10-31 15:42:14 +01:00

throttle.c

throttle: use THROTTLE_MAX/ARRAY_SIZE for hard code

2023-08-29 10:49:24 +02:00

timed-average.c

…

trace-events

console/win32: allocate shareable display surface

2023-06-27 17:08:56 +02:00

trace.h

…

transactions.c

…

unicode.c

…

uri.c

util/uri: Remove unused macros ISA_RESERVED() and ISA_GEN_DELIM()

2024-01-24 09:54:05 +01:00

userfaultfd.c

misc: Clean up includes

2024-01-30 21:20:20 +03:00

uuid.c

util/uuid: Add UUID_STR_LEN definition

2023-11-03 09:20:31 +01:00

vfio-helpers.c

util/vfio-helpers: Use g_file_read_link()

2023-05-24 09:21:22 +02:00

vhost-user-server.c

block: remove AioContext locking

2023-12-21 22:49:27 +01:00

yank.c

qapi: Fix dangling references to docs/devel/qapi-code-gen.txt

2024-01-26 07:04:53 +01:00