MFV: zstd 1.5.2

Merge commit 'b3392d84da5bf2162baf937c77e0557f3fd8a52b' into zstd_1.5.2

full changelog: https://github.com/facebook/zstd/compare/v1.4.8...v1.5.2

Updated sys/kern/subr_compressor.c

MFV: zstd 1.5.2

Merge commit 'b3392d84da5bf2162baf937c77e0557f3fd8a52b' into zstd_1.5.2

full changelog: https://github.com/facebook/zstd/compare/v1.4.8...v1.5.2

Updated sys/kern/subr_compressor.c to new API

MFC after: 3 days
Relnotes: yes
Sponsored by: Klara, Inc.

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sys/contrib/zstd: Import zstd 1.4.8

Merge commit 'f6ae97673c28bdb9ae795bd235ab6f26f2536a2d' into main

Changes from 1.4.5:
* https://github.com/facebook/zstd/releases/tag/v1.4.8
* https://github

sys/contrib/zstd: Import zstd 1.4.8

Merge commit 'f6ae97673c28bdb9ae795bd235ab6f26f2536a2d' into main

Changes from 1.4.5:
* https://github.com/facebook/zstd/releases/tag/v1.4.8
* https://github.com/facebook/zstd/releases/tag/v1.4.7
(and there was no public v1.4.6)

Conflicts:
sys/contrib/zstd/lib/common/zstd_internal.h (new ZSTD_NO_INTRINSICS)

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Update to Zstandard 1.4.5

As usual, the full release notes are found on Github:

https://github.com/facebook/zstd/releases/tag/v1.4.5

Notable changes include:

* Improved decompress performance o

Update to Zstandard 1.4.5

As usual, the full release notes are found on Github:

https://github.com/facebook/zstd/releases/tag/v1.4.5

Notable changes include:

* Improved decompress performance on amd64 and arm (5-10%
and 15-50%, respectively).
* '--patch-from' zstd(1) CLI option, which provides something like a very fast
version of bspatch(1) with slightly worse compression. See release notes.

In this update, I dropped the 3-year old -O0 workaround for an LLVM ARM bug;
the bug was fixed in LLVM SVN in 2017, but we didn't remove this workaround
from our tree until now.

MFC after: I won't, but feel free
Relnotes: yes

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Update to Zstandard 1.4.4

The full release notes can be found on Github:

https://github.com/facebook/zstd/releases/tag/v1.4.4

Notable changes in this release include improved decompression speed

Update to Zstandard 1.4.4

The full release notes can be found on Github:

https://github.com/facebook/zstd/releases/tag/v1.4.4

Notable changes in this release include improved decompression speed (about
10%). See the Github release notes for more details.

MFC after: I'm not going to, but feel free
Relnotes: yes

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Update to Zstandard 1.3.8

This merge brings in a couple new files, which needed to be attached to the
build; a new dependency on <limits.h>, which must be stubbed; and a name
change in the Context p

Update to Zstandard 1.3.8

This merge brings in a couple new files, which needed to be attached to the
build; a new dependency on <limits.h>, which must be stubbed; and a name
change in the Context parameter constants, from ZSTD_p_foo to ZSTD_c_foo.

Significantly, it fixes a kernel build error with GCC where floating-point
functions were included in the kernel build, by hiding them under the same
compile-time #ifdef that already covered their invocation. That issue was
introduced to FreeBSD in the 1.3.7 update and tracked upstream here:

https://github.com/facebook/zstd/issues/1386

The full 1.3.8 release notes can be found on Github:

https://github.com/facebook/zstd/releases/tag/v1.3.8

Relnotes: yes

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Merge ^/head r339015 through r339669.

Update to Zstandard 1.3.7

Relnotes: yes
Sponsored by: Dell EMC Isilon

Update to Zstandard 1.3.4

Includes our local patch to conditionalize use of __builtin_clz(ll) on
Clang's __has_builtin() (which is just defined to false when building with
GCC).

The issue is tracke

Update to Zstandard 1.3.4

Includes our local patch to conditionalize use of __builtin_clz(ll) on
Clang's __has_builtin() (which is just defined to false when building with
GCC).

The issue is tracked upstream at https://github.com/facebook/zstd/pull/884 .
Otherwise, these are vanilla Zstandard 1.3.4 files.

Reported by: allanjude, Yann Collet
Sponsored by: Dell EMC Isilon

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Update to Zstandard 1.3.3

Includes patch to conditionalize use of __builtin_clz(ll) on __has_builtin().
The issue is tracked upstream at https://github.com/facebook/zstd/pull/884 .
Otherwise, these

Update to Zstandard 1.3.3

Includes patch to conditionalize use of __builtin_clz(ll) on __has_builtin().
The issue is tracked upstream at https://github.com/facebook/zstd/pull/884 .
Otherwise, these are vanilla Zstandard 1.3.3 files.

Note that the 1.3.4 release should be due out soon.

Sponsored by: Dell EMC Isilon

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Use __has_builtin() to ensure clz and clzll builtins are available

The existing check of the GCC version number is not sufficient

This fixes the build on sparc64 in preparation for integrating ZSTD

Use __has_builtin() to ensure clz and clzll builtins are available

The existing check of the GCC version number is not sufficient

This fixes the build on sparc64 in preparation for integrating ZSTD into
the kernel for ZFS and Crash Dumps.

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Merge ^/head r325663 through r325841.

Move zstd from contrib to sys/contrib so it can be used in the
kernel. Adjust the Makefiles that referenced it to the new path.

Sponsored by: Netflix
OK'd by: cem@ and AllanJude@