Small change SIMD codes

[SakiTakamachi]

That convert the SSE2 API to NEON using zend_simd.h, enabling the use of SIMD in a NEON environment.

[youkidearitai]

@SakiTakamachi Thank you very much for update SIMD code. We need to confirm improve performance in aarch64 devices. I will try test on aarch64. Just a moment, please.

cc @alexdowad

[youkidearitai]

Please check: #11076 that I was try on using NEON.

Hmm... seems slow down in UTF-8 validation on Raspberry Pi 4B.
Using my code: https://gist.github.com/youkidearitai/7cd8771f6f6e40e21708129707b40204

configure

#! /bin/sh
#
# Created by configure

CFLAGS='-fsanitize=undefined,address -DZEND_TRACK_ARENA_ALLOC' \
CC='clang-14' \
CXX='clang++-14' \
'./configure' \
'--enable-mbstring' \
'--prefix=/home/tekimen/tekimen-php' \
'--enable-debug' \
'--enable-intl' \
'--enable-werror' \
"$@"

CPU

$ sapi/cli/php long-utf-8-bench.php
bool(true)
time: 29.112022218
speed: 48.289328356269 MB/s

Using XSSE(This PR)

$ sapi/cli/php long-utf-8-bench.php
bool(true)
time: 104.213115168
speed: 13.489664882714 MB/s

[youkidearitai]

Maybe my environment is slow that added --enable-debug so I am trying remove --enable-debug.

[SakiTakamachi]

@youkidearitai

I used your benchmark code to run measurements on my M2 environment. It appears that the code utilizing NEON performs approximately 1.7 times better.

Please note that the M2 has very strong SIMD capabilities, so the results might be better than what you would typically see on a standard ARM machine.

./configure --disable-debug --disable-all --enable-mbstring

Benchmark 1: /php-dev2/sapi/cli/php /mount/mb/long-utf-8-bench.php
  Time (mean ± σ):     574.2 ms ±   3.8 ms    [User: 349.2 ms, System: 222.1 ms]
  Range (min … max):   570.4 ms … 582.9 ms    10 runs
 
Benchmark 2: /master/sapi/cli/php /mount/mb/long-utf-8-bench.php
  Time (mean ± σ):     982.7 ms ±   5.2 ms    [User: 751.6 ms, System: 228.4 ms]
  Range (min … max):   974.8 ms … 989.3 ms    10 runs
 
Summary
  '/php-dev2/sapi/cli/php /mount/mb/long-utf-8-bench.php' ran
    1.71 ± 0.01 times faster than '/master/sapi/cli/php /mount/mb/long-utf-8-bench.php'

[alexdowad]

Thanks very much!
I hope to look at zend_simd.h before leaving comments on this PR. In the meantime, thanks very much for your work.

[youkidearitai]

I confirmed improve performance when release build.

XSSE

$ sapi/cli/php long-utf-8-bench.php
bool(true)
time: 2.231191191
speed: 630.06702682881 MB/s

non-SIMD(master dfff6ac)

 $ sapi/cli/php long-utf-8-bench.php
bool(true)
time: 4.667661884
speed: 301.1786275306 MB/s

Seems 2x faster than non-SIMD on Raspberry Pi 4B.