Add AVX2 and AVX512 optimization

[tszumski]

Encoder: performance gain ~0.1%​
Decoder: performance gain ~2.5%

[rouault]

Encoder: performance gain ~0.1%​
Decoder: performance gain ~2.5%

How was that measured? Total performance gain, or just on the DWT?

[tszumski]

Encoder: performance gain ~0.1%​
Decoder: performance gain ~2.5%

How was that measured? Total performance gain, or just on the DWT?

Total performance gain

[rouault]

This breaks at least Windows x64 regression tests.
Did you run the regression test suite locally? Make sure to clone https://github.com/uclouvain/openjpeg-data in a "data" subdirectory of your openjpeg repository, and run ctest

[tszumski]

This breaks at least Windows x64 regression tests. Did you run the regression test suite locally? Make sure to clone https://github.com/uclouvain/openjpeg-data in a "data" subdirectory of your openjpeg repository, and run ctest

Thanks for reply, I was able to fix it. Root cause is that CI use MSVC 2015 toolset that does not have _mm256_extract_epi32 and _mm256_insert_epi32 intrinsic defined,

[rouault]

@tszumski Can you fix the formatting of the code according to the instructions at end of https://github.com/uclouvain/openjpeg/actions/runs/10718601930/job/29724100308?pr=1552, that is

* Enable WITH_ASTYLE in your cmake configuration to format C++ code
* Use "scripts/astyle.sh file" to fix the now badly indented files
* Consider using scripts/prepare-commit.sh as pre-commit hook to avoid this
  in the future (ln -s scripts/prepare-commit.sh .git/hooks/pre-commit) or
  run it manually before each commit.

[tszumski]

@tszumski Can you fix the formatting of the code according to the instructions at end of https://github.com/uclouvain/openjpeg/actions/runs/10718601930/job/29724100308?pr=1552, that is

* Enable WITH_ASTYLE in your cmake configuration to format C++ code
* Use "scripts/astyle.sh file" to fix the now badly indented files
* Consider using scripts/prepare-commit.sh as pre-commit hook to avoid this
  in the future (ln -s scripts/prepare-commit.sh .git/hooks/pre-commit) or
  run it manually before each commit.

Fixed

[rouault]

@tszumski I don't have hardware to test AVX512F and github CI doesn't seem to have machines with it. Could you paste somewhere (here or a github gist if too large):

• the output of "grep C_FLAGS CMakeCache.txt" , showing that it includes -mavx512f
• the output of "ctest -V"

[tszumski]

@rouault
For consistency with CI scans(windows) i applied flag -DCMAKE_C_FLAGS="/arch:AVX512" And i can confirm that AVX512F is set/defined* (test logs from MSVC 2017 and MSVC 2022 are identical)

Note: *MSVC added support for AVX512 in Visual Studio 2017

• the output of "grep C_FLAGS CMakeCache.txt"

$ grep C_FLAGS CMakeCache.txt
CMAKE_C_FLAGS:STRING=/arch:AVX512
CMAKE_C_FLAGS_DEBUG:STRING=/MDd /Zi /Ob0 /Od /RTC1
CMAKE_C_FLAGS_MINSIZEREL:STRING=/MD /O1 /Ob1 /DNDEBUG
CMAKE_C_FLAGS_RELEASE:STRING=/MD /O2 /Ob2 /DNDEBUG
CMAKE_C_FLAGS_RELWITHDEBINFO:STRING=/MD /Zi /O2 /Ob1 /DNDEBUG
CMAKE_RC_FLAGS:STRING=-DWIN32
CMAKE_RC_FLAGS_DEBUG:STRING=-D_DEBUG
CMAKE_RC_FLAGS_MINSIZEREL:STRING=
CMAKE_RC_FLAGS_RELEASE:STRING=
CMAKE_RC_FLAGS_RELWITHDEBINFO:STRING=
//ADVANCED property for variable: CMAKE_C_FLAGS
CMAKE_C_FLAGS-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_C_FLAGS_DEBUG
CMAKE_C_FLAGS_DEBUG-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_C_FLAGS_MINSIZEREL
CMAKE_C_FLAGS_MINSIZEREL-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_C_FLAGS_RELEASE
CMAKE_C_FLAGS_RELEASE-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_C_FLAGS_RELWITHDEBINFO
CMAKE_C_FLAGS_RELWITHDEBINFO-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_RC_FLAGS
CMAKE_RC_FLAGS-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_RC_FLAGS_DEBUG
CMAKE_RC_FLAGS_DEBUG-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_RC_FLAGS_MINSIZEREL
CMAKE_RC_FLAGS_MINSIZEREL-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_RC_FLAGS_RELEASE
CMAKE_RC_FLAGS_RELEASE-ADVANCED:INTERNAL=1
//ADVANCED property for variable: CMAKE_RC_FLAGS_RELWITHDEBINFO
CMAKE_RC_FLAGS_RELWITHDEBINFO-ADVANCED:INTERNAL=1

• the output of "ctest", to make logs shorter here is only first and last few lines with summary

1>------ Build started: Project: RUN_TESTS, Configuration: Release x64 ------
1>Test project D:/openjpeg/build-tests
1>          Start    1: tte0
1>   1/1587 Test    #1: tte0 .........................................................................................   Passed    0.88 sec
...
1>          Start 1587: testjp2
1>1587/1587 Test #1587: testjp2 ......................................................................................   Passed    0.27 sec
1>
1>99% tests passed, 2 tests failed out of 1587
1>
1>Total Test time (real) = 224.17 sec
1>
1>The following tests FAILED:
1>	1147 - NR-DEC-issue226.j2k-74-decode (Failed)
1>	1148 - NR-DEC-issue226.j2k-74-decode-md5 (Failed)
1>Errors while running CTest

Failed Tests 1147/1148 are also failing on master branch without my changes

[rouault]

Failed Tests 1147/1148 are also failing on master branch without my changes

yes, those are "expected" (we have some a file in CI to ignore them

ok, so everything looks good. Merging