--
05a099a580753f8e96cee38572e94dcdc079361b by Abseil Team <absl-team@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 405966217

--
c6b81e9ebc183d8389f14ecd091c8bad08cfe0aa by Abseil Team <absl-team@google.com>:

Add `inline_element_size` to hashtablez (so that we can compute the weighted load factors properly e.g., in b/187896534).

PiperOrigin-RevId: 405917711

--
3e3673de4e54e4142c54b09e1644dfa3de4bb296 by Abseil Team <absl-team@google.com>:

align indent of code comment in mutex.h

PiperOrigin-RevId: 405871997

--
2248301a5b14f8d2be5b2e9088f3528a353ea491 by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 405639236

--
bc7d3c56fdad3dde4b89324af142529f2afe5f1b by Abseil Team <absl-team@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 405508045

--
66472387276ef02505d99195747be862768bb35b by Laramie Leavitt <lar@google.com>:

Also use uint8_t golden values in randen_test.cc

This makes randen_test, randen_slow_test, and randen_hwaes_test essentially
identical, as is the intent.

PiperOrigin-RevId: 405484423
GitOrigin-RevId: 05a099a580753f8e96cee38572e94dcdc079361b
Change-Id: I3dd5b0cfdb98d6e1ab02266194ba67d15428c2f8

--
30bbe72e8c32d8680bbe6c8473a884d485e9f684 by Laramie Leavitt <lar@google.com>:

Convert randen golden test to use byte arrays.

PiperOrigin-RevId: 404948438

--
4690d9ebd2c518708ad155e913b2140ebdf01234 by Laramie Leavitt <lar@google.com>:

Add golden tests for internal::ExplicitSeedSeeq against stable std:: random URBGs.

PiperOrigin-RevId: 404912608

--
52e9b24276ee3a21cc8a026f9d152ef8ced7f507 by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 404861043

--
9e966a2a680970fd27d927cc6420e333b1378b1e by Abseil Team <absl-team@google.com>:

Roll back import of CCTZ from GitHub.

PiperOrigin-RevId: 404343587

--
9c4eedec00105b8288c0b91d96434aea08b8e3c3 by Abseil Team <absl-team@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 404314597

--
f171375fd7bec35cc34815be8faf5e000828b7bb by Abseil Team <absl-team@google.com>:

Internal change

PiperOrigin-RevId: 404098156
GitOrigin-RevId: 30bbe72e8c32d8680bbe6c8473a884d485e9f684
Change-Id: Ic7b5a3c0659e321e2f642800930a8de014253e2a

This provides the baseline needed to build Abseil on Haiku systems.

--
b008f3aaab60f1f0eb5987b50336543cca7151be by Martijn Vels <mvels@google.com>:

Enable Cord Btree as the default Cord implementation.

The Cord Btree implementation has been extensively tested by google. This changes makes the Cord Btree implementation the default implementation. This change should have no impact on current use cases and does not effect any public API or behavior.

PiperOrigin-RevId: 403966449

--
3d82052b5819d1244942c59d5cb4e51d75ada287 by Derek Mauro <dmauro@google.com>:

Add missing CMake alias for gmock_main.
Remove unused variable ABSL_TEST_COMMON_LIBRARIES

Fixes #709
Fixes #1043

PiperOrigin-RevId: 403950358

--
86695f6d06915b56d807303c37ee81487998cd58 by Abseil Team <absl-team@google.com>:

FunctionRef is cheaper to construct than a std::function, and the argument is only used during the call, so this is safe. This has the added advantage of allowing the caller to provide a non-movable callable, which can't be converted to a std::function.

PiperOrigin-RevId: 403457615

--
196c1109ba519d4ff00c856bbb4bff754468359f by Abseil Team <absl-team@google.com>:

Internal optimization.

PiperOrigin-RevId: 403413291
GitOrigin-RevId: b008f3aaab60f1f0eb5987b50336543cca7151be
Change-Id: I1665f0efd484f53e0ed22d8940ef2fa60b03cc5b

--
58affd6378c47993f5408f7b8a8863fa5bcc2c47 by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 403120541

--
27dc5d5f87bca6254585cca69058c14e0a2f3ce6 by Chris Kennelly <ckennelly@google.com>:

Prefetch while hashing.

While we may not need to access the cacheline *ctrl_ is on once we've computed the hash, we can begin to resolve the TLB required for the hashtable's heap allocation simultaneously with computing the hash value for the key.

PiperOrigin-RevId: 402954725
GitOrigin-RevId: 58affd6378c47993f5408f7b8a8863fa5bcc2c47
Change-Id: Id04297de823ad5c5a867c46065fa3a9ef0ada3dd

--
566c422ef23a01a71ca7a02d15a3f23ab5135f47 by Abseil Team <absl-team@google.com>:

Fix a bug in the right shift of negative numbers for the no_intrinsic code path

If the right shift was greater than or equal to 64 bits the the most significant 64 bit would always be initialized to zero. The code now initializes the most significant int64 to all ones if the architecture does arithmetic rights shifts and the number was negative.

PiperOrigin-RevId: 402407698
GitOrigin-RevId: 566c422ef23a01a71ca7a02d15a3f23ab5135f47
Change-Id: I01c57a87a91a2c89f62bb952661e3a5dcdca6234

--
42dc250867db8816381a38596e00a3b27b7dbc37 by Gennadiy Rozental <rogeeff@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 401863616
GitOrigin-RevId: 42dc250867db8816381a38596e00a3b27b7dbc37
Change-Id: Ia1f100293e0c0845de76d986a170b5ca8d15f1a3

--
35df3686d19c2864fea8796e109c76e179c3375e by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 401769948

--
fcfe13483862a7c11c0bee789ca8d6f47d31860a by Derek Mauro <dmauro@google.com>:

Update Google Benchmark dependency

PiperOrigin-RevId: 401528577
GitOrigin-RevId: 35df3686d19c2864fea8796e109c76e179c3375e
Change-Id: I7a5123ea37de10e5bde9c9c74faa7e43d80490ca

--
17141711ee419daa597a9f31e73721f80143e55a by Gennadiy Rozental <rogeeff@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 401384949

--
ac48584a7b16e8a12e26d49deb6cddec584a20b5 by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 401337785

--
8a51bb7c962845e0707240c5ba12c1b80f6fbbe9 by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 401047691

--
8e18024510869247f3c04c7807c93709eca2322a by Chris Kennelly <ckennelly@google.com>:

Note that SpinLock does not guarantee priorities for wakeups.

PiperOrigin-RevId: 400999238

--
75bc09b5f95fbb74b74d14c370bfb80011e8fb7f by Derek Mauro <dmauro@google.com>:

Add visibility restrictions to some internal targets

PiperOrigin-RevId: 400718253

--
1de5061016bc42cd7be009c9725ed2343ce12e3d by Abseil Team <absl-team@google.com>:

Make it clear that operator<< can also be used in place of ToString when logging absl::Status.

PiperOrigin-RevId: 400248269

--
cda15d9dc6e5cd569de7e5e73f409b72a3caed51 by Abseil Team <absl-team@google.com>:

Minor cleanup

PiperOrigin-RevId: 400087535

--
b001375ec47da3a0434be9ca9a45c0df510e7dda by Abseil Team <absl-team@google.com>:

Move periodic_sampler from base/internal to profiling/internal

PiperOrigin-RevId: 400038533

--
e7e02e686abc3900e723080849a3607d190ef57f by Abseil Team <absl-team@google.com>:

Move exponential_biased from base/internal to profiling/internal

PiperOrigin-RevId: 400020329
GitOrigin-RevId: 17141711ee419daa597a9f31e73721f80143e55a
Change-Id: I10924df7e1cc198447813dbe97a374a5cef66b49

Avoid using libstdc++'s implementation of std::hash<std::bitset> and
std::hash<std::vector> on big endian platforms in the implementation
of absl::Hash.

This is a workaround for a buggy implementation that results in many
collisions.

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102531
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98731

--
506fa3e10b3d8399ad937c32ecea26d1ad4e62bb by Abseil Team <absl-team@google.com>:

Disable ABSL_HAVE_STD_IS_TRIVIALLY_ASSIGNABLE when GCC < 8.2.0 is used with libc++

PiperOrigin-RevId: 399707056

--
656b7c7cee87f46a4bc7953618796f82da08e62c by Derek Mauro <dmauro@google.com>:

Remove the MSVC flag implementation from flag.h to help clarify that
methods on absl::Flag<T> are not part of the public API

PiperOrigin-RevId: 399584678

--
a92a9bc156303bc663b84c4b704891ec8f67e333 by Abseil Team <absl-team@google.com>:

Get rid of MemcpyIfAllowed while continuing to suppress erroneous warnings

PiperOrigin-RevId: 399468864

--
5f9a66895f707ba001fb51b88c0c6025f8c872a3 by Abseil Team <absl-team@google.com>:

Use feature testing to check for availability of invoke_result.

Feature testing should be available by C++20, which removes invoke_result.
https://en.cppreference.com/w/cpp/feature_test

PiperOrigin-RevId: 399447373

--
946c0a502b4499dbfcabf1ab93ddde0048288fb4 by CJ Johnson <johnsoncj@google.com>:

Add rvalue-reference qualifier to the Commit method on ConstructionTransaction

PiperOrigin-RevId: 399442206

--
726a4d036eff49aeb6fd0ca2b1775699b6844395 by Greg Falcon <gfalcon@google.com>:

Internal change

PiperOrigin-RevId: 399441870

--
1df6d3f659b88dbac13c3d8e13db23bb3844ece2 by Abseil Team <absl-team@google.com>:

Clang-format whitespace changes

PiperOrigin-RevId: 399281271

--
4a828cde95a07421d699ebac775b37810624214f by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 399234071

--
e520c72b34ba2f98668c889139001f8276243d31 by Greg Falcon <gfalcon@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 399233662
GitOrigin-RevId: 506fa3e10b3d8399ad937c32ecea26d1ad4e62bb
Change-Id: I92b9176d2387c08eb167f9268efa78b55b8e09c2

--
d6f0dab708b123a5e24b98da1de0b11e36a7a86e by Evan Brown <ezb@google.com>:

In STLStringResizeUninitializedAmortized, use basic_string::__append_default_init for amortized growth rather than conditionally adding reserve in STLStringReserveAmortized. This way, we can avoid extra branches, e.g. in basic_string::__shrink_or_extend.

PiperOrigin-RevId: 398761382
GitOrigin-RevId: d6f0dab708b123a5e24b98da1de0b11e36a7a86e
Change-Id: Ib2d99411c95d61300519c32b885ce586b410c3bf

--
1801102e11205861bc063e067e9fd4754b625c5a by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 398562681

--
485008445725d4013f60f4b2876f84b6b47932ec by Jorg Brown <jorg@google.com>:

Replace calls to std::isinf with comparison against max().

PiperOrigin-RevId: 398534255

--
9b99d074d39ad677cf92f99549d22bb73f504f8f by Saleem Abdulrasool <abdulras@google.com>:

debugging: add support for non-glibc targets for debugging

This relaxes the ELF mem_image handling and subsequently enables the VDSO
support for non-glibc targets.  The primary need for the restriction was the
use of the `__GLIBC_PREREQ` macro.  If it is undefined, assume that the glibc
pre-requisite is unavailable.  This allows building the debugging_internal
target on musl targets.

PiperOrigin-RevId: 398499050

--
3cc3630ef2226ae1981a944573f0f9c27a527ebf by Abseil Team <absl-team@google.com>:

Replace usages of `auto` with proper typedefs.

PiperOrigin-RevId: 398479551
GitOrigin-RevId: 1801102e11205861bc063e067e9fd4754b625c5a
Change-Id: Ib13e8612d1b263b9c1ae7f56a9f394b24c3add2e

* Init support of AIX

* make sysinfo change AIX specific

* Relocate TBF

* Add comments for .csect psudo op.

--
336f161ad8cb2cc3e1a6bbcbbb8c5b692ee59789 by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 398308807

--
80d512823d17561a45feca81f37713a91a175349 by Abseil Team <absl-team@google.com>:

Internal change.

PiperOrigin-RevId: 398257218

--
f1f9792000355eb1d0c11b17800048491662a218 by Abseil Team <absl-team@google.com>:

Fix documentation for btree_multi{map,set}::merge to match behavior for elements with equivalent keys.

PiperOrigin-RevId: 398071060

--
8a9a302aebf2419e83f0c7dc5a63c33d26b807a3 by James Y Knight <jyknight@google.com>:

Silence -Wunused-value warning newly emitted by ToT Clang.

The value is being intentionally ignored, as the purpose of the call is only to eliminate this overload via SFINAE when `GenT{}` is not constant evaluable.

PiperOrigin-RevId: 397861294
GitOrigin-RevId: 336f161ad8cb2cc3e1a6bbcbbb8c5b692ee59789
Change-Id: I946e1d22619f92ce6a424c8c13a20a50b39ed463

--
d56207f5535c3aad1624e33d20777ea6e66f51a7 by Abseil Team <absl-team@google.com>:

Internal change

PiperOrigin-RevId: 397830482

--
7f7ff3e88e0d3cd61d63da477b2a08e61a1aeea2 by Evan Brown <ezb@google.com>:

Update implementation details comment in raw_hash_set to include information about the heap allocation's layout.

PiperOrigin-RevId: 397786239

--
fde783b12a79ae8d587d1027bc8736dff6844897 by Abseil Team <absl-team@google.com>:

Add comments on #endif to make nesting clearer

PiperOrigin-RevId: 397684219
GitOrigin-RevId: d56207f5535c3aad1624e33d20777ea6e66f51a7
Change-Id: I43dc2b5c982f1ef2b21f82b6133c49c428baf223

--
3794fe8db7a8e5a17945a8d6e198cde1db1fed7d by Chris Kennelly <ckennelly@google.com>:

Record maximum reserve or rehash argument in hashtable statistics.

This makes it possible to identify containers that are large because of reserve
calls or ones that could have an opportunity for more precise capacity sizing.

PiperOrigin-RevId: 396851064

--
c3d247c08acfd45d8e19cfd8e6e841e16e38e23d by Abseil Team <absl-team@google.com>:

Remove extra semi-colon

PiperOrigin-RevId: 396823800
GitOrigin-RevId: 3794fe8db7a8e5a17945a8d6e198cde1db1fed7d
Change-Id: I9f26407c2dc6b3dff04f6f3e249571dd8ab288c3

--
a7924266cefd1c175142545996c967fb18b6144f by Abseil Team <absl-team@google.com>:

Document the performance advantages of the `ToInt64*()` family of functions.

PiperOrigin-RevId: 396736253

--
77aa845d3aa4c56a48b899ce5a5ffcf9b81991b3 by Matt Kulukundis <kfm@google.com>:

tiny cleanup: remove redundant `public:`

PiperOrigin-RevId: 396615677

--
b837e3de0ebd99e4c4f692a80a5d7ece3e829d18 by Martijn Vels <mvels@google.com>:

Make btree growth factor identical to concat code

The btree code is using a more aggressive growth rate on Cord::Append than the Concat version. To minimize impact on migration and existing tests using empirical assumptions on growth, this change makes the btree use the same rate as Concat logic.

PiperOrigin-RevId: 396595109

--
e958c06b6ab52e389caa7b3e43d83f924367e79c by Martijn Vels <mvels@google.com>:

Change CordRepBtree::Dump to include capacity of flats

PiperOrigin-RevId: 396591195
GitOrigin-RevId: a7924266cefd1c175142545996c967fb18b6144f
Change-Id: Ia38c09ba9891364b0727509dec4776eb6aadf984

--
ca3a0009e675b699b5d6dd41f00ebac0e7d1935c by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 396475923

--
04d9fff79085bb18612af3da49007907394ae0b6 by Abseil Team <absl-team@google.com>:

Move HastablezSampler from container/internal to profiling/internal.

PiperOrigin-RevId: 396362093
GitOrigin-RevId: ca3a0009e675b699b5d6dd41f00ebac0e7d1935c
Change-Id: I42d6d2944786afa24259fde002fed5e611f4e1f9

immintrin.h is the de-factor standard header for clang and GCC to
include Intel intrinsics. Using this header avoids requiring the
compiler to use the `-maes` and `-msse4.1` compiler options on systems
that may not have AES or SSE instruction support.

clang: As seen in
https://github.com/llvm-mirror/clang/blob/master/lib/Headers/immintrin.h,
specific intrinsic header files are conditionally included depending on
whether the feature is available.

gcc: As seen in
https://github.com/gcc-mirror/gcc/blob/master/gcc/config/i386/immintrin.h,
gcc includes all intrinsic header files, but each individual file guards
against the feature not being available.

This came out of an investigation in
https://github.com/grpc/grpc/pull/27121.

--
77e710b0ced5792a328e88bcb938a41484bf4cdc by Saleem Abdulrasool <abdulras@google.com>:

absl: add an implementation for UnscaledCycleClock on RISCV

Add an implementation for UnscaledCycleClock on RISC-V targets.

PiperOrigin-RevId: 395982312

--
84430fce6760c488ca36401cd530f44268ac710d by Martijn Vels <mvels@google.com>:

Harden CordRepBtreeReader against reading up to or beyond EOF

This change hardens the reader to Next() calls on EOF situations. It changes the 'consumed()' property inside CordRepBtreeReader into a 'remaining()' property which is easier to understand and use than the 'consumed()' property QED the function documentation and use in cord.cc

This change also adds the CharIterator test to the CordTest fixture enabling them to be run with btree cords.

PiperOrigin-RevId: 395971732

--
6557e628f2613169da8f693189223acb30e07833 by Martijn Vels <mvels@google.com>:

Add AdvanceAndRead() test addressing the edge case surfaced in b/197776822

This adds a test explicitly exercising all possible AdvanceAndRead() calls on CharIterator. As per the linked bug, a partial or full small read ending exactly at the end of the last edge of a btree cord results in an attempt to read beyond that last edge and subsequent failure. We will fix the bug and enable these tests for btree in a subsequent change.

PiperOrigin-RevId: 395958317
GitOrigin-RevId: 77e710b0ced5792a328e88bcb938a41484bf4cdc
Change-Id: Ie6e21ce36980515165af7cf046cf199ecbe0ddb0

--
4fd27d1c0fda72a8772f2779714c327b18ae657b by Derek Mauro <dmauro@google.com>:

Adds missing documentation for btree's lower_bound and upper_bound methods

PiperOrigin-RevId: 395777262
GitOrigin-RevId: 4fd27d1c0fda72a8772f2779714c327b18ae657b
Change-Id: Ife2f9149bcf30523be93ee9d8919c7085a9d3a29

--
6eac0cc7bca997ee95afd4ec485077ae8fd99333 by Abseil Team <absl-team@google.com>:

Add comment not to use `ABSL_ATTRIBUTE_PACKED` with `std::atomic`.

PiperOrigin-RevId: 395231460
GitOrigin-RevId: 6eac0cc7bca997ee95afd4ec485077ae8fd99333
Change-Id: Ib4e83bed0f313724b309b6278e9e24a6e5fe9b2c

--
7507caf944f8eb98e55730e60e77f9060c572788 by Derek Mauro <dmauro@google.com>:

Remove RunningOnValgrind() and ValgrindSlowdown() from dynamic_annotations.h

These are defined by some sanitizer implementations and possibly Valgrind.
Abseil decided to define them when the implementation was unavailable so
that they could be unconditionally called, but we now consider this a mistake.
Other libraries, including Python, have copied this method, leading to
multiple definitions when these libraries are used together.

In the unlikely case that code is using Abseil's definition, it
is recommended that the call be guarded instead:
```
#if __has_feature(thread_sanitizer)
extern "C" int RunningOnValgrind();
if (RunningOnValgrind()) ...
#endif
```

Fixes #1011

PiperOrigin-RevId: 394501460
GitOrigin-RevId: 7507caf944f8eb98e55730e60e77f9060c572788
Change-Id: I5ddaf9a590c857d645461352a0f6fbccbb3d5584

--
f73e17cb24f7878933fc100bd9bfc39fce190b64 by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 394306402

--
3d3eeffa4e37f63aa50fec1b90858043b40fe377 by Abseil Team <absl-team@google.com>:

Release a few more absl::Cord unit tests that were accidentally omitted from the OSS release before.

PiperOrigin-RevId: 394016464

--
8a77a8eb93d021aadd8fdf43e219bf35328001ad by CJ Johnson <johnsoncj@google.com>:

Fix typo in identifier

PiperOrigin-RevId: 394000560

--
d87206c7c8e045b03d74b91e47ef3db0eb47a17b by Derek Mauro <dmauro@google.com>:

Fix typo: RandenHwAes

PiperOrigin-RevId: 393879427

--
980a3402eea77b0c77fb20dd124203002ff791ba by Derek Mauro <dmauro@google.com>:

Adds macros `ABSL_LTS_RELEASE_VERSION` and `ABSL_LTS_RELEASE_PATCH_LEVEL`
to allow projects to detect if an LTS version is being used.

Fixes #1006

PiperOrigin-RevId: 393807178

--
aecc7ed34de718c64733dab76621eacb5af9af5f by CJ Johnson <johnsoncj@google.com>:

Change `alloc` to `allocator` to match the fact that other identifiers are full words

PiperOrigin-RevId: 393794869

--
ad754bbcf7b78f5d51ed5f39193ac3159429b2b4 by Derek Mauro <dmauro@google.com>:

Remove self-include of cord_rep_btree.h

PiperOrigin-RevId: 393792085

--
f8e937a0d8fe26400560754f3596e3c21bb6d0d7 by Abseil Team <absl-team@google.com>:

Fix trivial typo in comment.

PiperOrigin-RevId: 393770527

--
7a58ca5d708038d222c6a2b6ff5076b4ceffd370 by Tomas Dzetkulic <dzetkulic@google.com>:

Update Cord::AppendArray resize policy.

PiperOrigin-RevId: 393362184

--
316050d171190d9d6312cadf88b1cc2db2d1caa7 by Abseil Team <absl-team@google.com>:

Add a new top level profiling/ directory to the Abseil library

PiperOrigin-RevId: 393358109

--
0dbb8e10f7fa4a7ac74e12b178e936a67b266c51 by CJ Johnson <johnsoncj@google.com>:

Switch to the more common enable_if pattern of ` = 0` in InlinedVector

PiperOrigin-RevId: 393301549

--
136d3068ce33b50ac820e8bd01395a7164d5181f by Abseil Team <absl-team@google.com>:

Clean up typedefs in internal/inlined_vector.h

PiperOrigin-RevId: 393181754
GitOrigin-RevId: f73e17cb24f7878933fc100bd9bfc39fce190b64
Change-Id: I0c4cd4d71d97bd1bf651701b6302ea3d9ac59b66

Add -Wno-unknown-warning-option to ABSL_LLVM_FLAGS to disable warnings on unknown warning flags. (#1008)

--
e1c30aa6d6bb25987916d3ec39245c6d4a2a93ea by Derek Mauro <dmauro@google.com>:

Only build the non-stub implementation of RandenHwAes when
accelerated AES can be detected by compiler-set flags.

This removes the case where the full RandenHwAes is built when
only ABSL_RANDOM_INTERNAL_AES_DISPATCH is true.

This also removes the case where ARM crypto is enabled through
the crypto directive. This directive doesn't appear to reliably
work when used with arm_neon.h. As far as I can tell, the crypto
directive is only meant to work with crypto instructions in
handwritten asm. For this to work with arm_neon.h, it appears
several hacks are needed, including overriding some compiler-set
defines.

PiperOrigin-RevId: 392948948
GitOrigin-RevId: e1c30aa6d6bb25987916d3ec39245c6d4a2a93ea
Change-Id: Ie97e26f0204c8a86f72d2f38a59181f1ef578418

--
5d05c54a619a969da5b4b7f66a2af2d969dc7920 by Abseil Team <absl-team@google.com>:

Save not needed copies of the predicate in raw_hash_set's EraseIf.

PiperOrigin-RevId: 392706073

--
61ee9b808cd3c81dd10a600c8de5428d6a43cfeb by Abseil Team <absl-team@google.com>:

Save unnecessary copies of the iterator in raw_hash_set's EraseIf.

PiperOrigin-RevId: 392668288
GitOrigin-RevId: 5d05c54a619a969da5b4b7f66a2af2d969dc7920
Change-Id: I180dab2706841ce56f27cf6eabdad1106ebdcf73

--
2aa219620f39aa490fa989f5d92e1bd3e52a46c5 by Abseil Team <absl-team@google.com>:

Add lifetime annotations to FunctionRef.

PiperOrigin-RevId: 392131866
GitOrigin-RevId: 2aa219620f39aa490fa989f5d92e1bd3e52a46c5
Change-Id: I295b808986857e46a565e047db25a951dd7ce0e3

--
82011e44e917fb70fa00078f0bad7f787580bd8e by Abseil Team <absl-team@google.com>:

Add lifetime annotations to status methods that return references.

PiperOrigin-RevId: 391907063
GitOrigin-RevId: 82011e44e917fb70fa00078f0bad7f787580bd8e
Change-Id: Icb2cafbf5eb1201b3bdb56a17263073e22b642e7

--
04cb3b22497190170aa5b774e98080c5de2ba60b by Abseil Team <absl-team@google.com>:

Alternative bit mixer for LowLevelHash on ARM

LowLevelHash's bit-mixer is inefficient on ARM because it calculates a 128-bit product of two 64-bit numbers. On ARM, this requires a sequence of two instructions with a high combined latency and poor throughput. This change provides alternative bit-mixing code for ARM that uses only 64-bit arithmetic (multiplication, xor, and left-shifts) and speeds things up considerably.

The bit-mixing code for ARM was inspired by by Woothash[1] and xxh3[1]. Once I landed on a sequence of operations that provided good mixing, I used a test harness to search for the combination of shift / rotate factors that provided the best mixing, as indicated by SMHasher hash quality tests. The new mixing code passes 13 out of 15 of the hash quality test suites in SMHasher, with the two failures being in the noise range: e.g. 1 collision vs. zero expected in a keyset of ~8m keys.

  [1]: https://github.com/tommyettinger/waterhash/blob/49f5cf0b63b9/woothash.h#L16-L20
  [2]: https://github.com/Cyan4973/xxHash/blob/6853ddc36e46/xxhash.h#L3240-L3265

PiperOrigin-RevId: 391833008

--
17a4de1f9d623155c75b19285d414cd55a487cd6 by Saleem Abdulrasool <abdulras@google.com>:

debugging: add support for unwinding on RISCV Linux

This adds partial support for unwinding the RISCV call stack.  It is largely
duplicated from the AArch64 support with alterations for the ELF RISCV psABI.
This covers RISCV64 and RISCV32, though not the ILP32E calling convention.

PiperOrigin-RevId: 391818522

--
32c93e449327b2cea32b32f6365e84b420fe1ed3 by Gennadiy Rozental <rogeeff@google.com>:

New storage for types smaller than 8 bytes.

Also adding new read interface for types smaller than or rqual to 8 bytes to avoid passing the pointer.

PiperOrigin-RevId: 391726822

--
e987ac08a7787801cbfc7d7c96649e97fa8cff1a by Abseil Team <absl-team@google.com>:

Extern template `find_first_non_full` to reduce linkage size for TU with single not inlined function.

PiperOrigin-RevId: 391718862

--
73af9bfcb5bf045089133e18bbd20eb5bb699172 by Gennadiy Rozental <rogeeff@google.com>:

Make most non-mutable most int128 methods and friend free functions constexpr.

Some functions are implemented offline (at least in some configurations) and can't be made constexpr. Mutable methods can't be made constexpr until we drop c++11 support.

Fixes #978

PiperOrigin-RevId: 391706535
GitOrigin-RevId: 04cb3b22497190170aa5b774e98080c5de2ba60b
Change-Id: If051fad5ff004e2e82fa53618fc04a6fe3d2d4be

--
84bcdcd9497d1ec989f50c8dee93f656507c7bd6 by Abseil Team <absl-team@google.com>:

Reduce length of the `flat_hash_map<std::string, V>` type name in order to reduce binary bloat.

PiperOrigin-RevId: 391560997

--
5f49bd435e066989851dc045c7786ef400413f66 by Greg Falcon <gfalcon@google.com>:

Claim a bit from the Cord refcount for future use.

Also rename the increasingly-inaccurately named "Refcount" class to "RefcountAndFlags".

In optimized builds, this adds an extra mask instruction to decrement and test operations, but no new branches.  Future flags can be added at no extra cost.  Each additional flag will of course reduce the range of our refcount, but even with the bit added, we still support refcounts of 500 million.

PiperOrigin-RevId: 391557567
GitOrigin-RevId: 84bcdcd9497d1ec989f50c8dee93f656507c7bd6
Change-Id: I051823bf5a9a42d4fa9200e39563ab585ecab331

--
aabb5093ff380fc60d9a75ace279b620fdc4bff9 by Abseil Team <absl-team@google.com>:

Demangle Clang-specific "<expression> ::= cp <simple-id> <expression>* E"
Cf. https://clang.llvm.org/doxygen/ItaniumMangle_8cpp_source.html#l04338

PiperOrigin-RevId: 391358031

--
34dc7baa38f74a8c78b91ac94486707347a85e35 by Derek Mauro <dmauro@google.com>:

Internal change

PiperOrigin-RevId: 391282565
GitOrigin-RevId: aabb5093ff380fc60d9a75ace279b620fdc4bff9
Change-Id: I6d3e235a9c0a1b67a43071de205fed0fefe12912