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10 Commits (d24156f63ca6d44a0dc05e260ad7810b2fcf3405)

Author	SHA1	Message	Date
Abseil Team	f19051447f	CMake: Mark absl::cord_test_helpers and absl::spy_hash_state PUBLIC ... PiperOrigin-RevId: 478611460 Change-Id: I327dbd1c16a22649e3a25b9ebbc94b48a2fda26f	2 years ago
Derek Mauro	152e9a1826	CMake: Mark hash_testing as a public testonly library, as it is with Bazel ... PiperOrigin-RevId: 471833563 Change-Id: Ida281308afab67e73b2da61418e82b22c2110ef9	2 years ago
Abseil Team	6f43f5bb39	Export of internal Abseil changes ... -- afa44fa0245a1cfb1824ef9697b3fa77fa9615c9 by Laramie Leavitt <lar@google.com>: Comment CMakeLists.txt about internal absl_cc_library() targets. From what I can tell, these are the CMake targets that are public: absl::algorithm absl::algorithm_container absl::base absl::core_headers absl::dynamic_annotations absl::log_severity absl::cleanup absl::btree absl::fixed_array absl::flat_hash_map absl::flat_hash_set absl::inlined_vector absl::node_hash_map absl::node_hash_set absl::debugging absl::failure_signal_handler absl::leak_check absl::leak_check_disable absl::stacktrace absl::symbolize absl::flags absl::flags_commandlineflag absl::flags_config absl::flags_marshalling absl::flags_parse absl::flags_reflection absl::flags_usage absl::bind_front absl::function_ref absl::hash absl::hash_testing absl::memory absl::meta absl::type_traits absl::bits absl::int128 absl::numeric absl::numeric_representation absl::exponential_biased absl::periodic_sampler absl::sample_recorder absl::random_bit_gen_ref absl::random_distributions absl::random_mocking_bit_gen absl::random_random absl::random_seed_gen_exception absl::random_seed_sequences absl::status absl::statusor absl::cord absl::cord_test_helpers absl::str_format absl::strings absl::synchronization absl::civil_time absl::time absl::time_zone absl::any absl::bad_any_cast absl::bad_optional_access absl::bad_variant_access absl::compare absl::optional absl::span absl::variant absl::utility PiperOrigin-RevId: 438702788 Change-Id: Icf611c35e88f03cd2493a95f61617605305d4e8e -- a99f60847578e6c0df6befadb29a01c86def0d21 by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 438647928 Change-Id: I141eadd17d6e8607df25ebc893aecefa0239a72f -- b23e77e8f62a77023188594390c9e491c507d22c by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 438628502 Change-Id: I40c4297716c8c1621ba8b02a22393bfcbefb5b5e GitOrigin-RevId: afa44fa0245a1cfb1824ef9697b3fa77fa9615c9	3 years ago
Abseil Team	fbbb5865a5	Export of internal Abseil changes ... -- 487c7a754a3b93bc0f9de14bdced48007a96ae55 by Greg Falcon <gfalcon@google.com>: Add support for absl::Hash to hash unordered containers. These can now be hashed directly, as well as combined in AbslHashValue implementations. This also adds a new method, `H::combine_unordered()`, to the public AbslHashValue hash state API. This allows users to implement hash specializations for their own unordered collection types. A traits class, `H::is_hashable<T>`, is also added to the hash state API. H::is_hashable<T>::value reflects whether type T is considered hashable by the AbslHashValue framework. This allows users to properly SFINAE templated versions of AbslHashValue. (The AbslHashValue implementation added to raw_hash_set shows an example of its use.) PiperOrigin-RevId: 422856706 GitOrigin-RevId: 487c7a754a3b93bc0f9de14bdced48007a96ae55 Change-Id: Id31fd4ccba282f8c9ae6fcee6ae0ad0f7879f456	3 years ago
Abseil Team	a05366d851	Export of internal Abseil changes ... -- 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	3 years ago
Abseil Team	8910297baf	Export of internal Abseil changes ... -- 3a9b4e8e5ecba532db5cc4ac12d12660307ce9fb by Derek Mauro <dmauro@google.com>: Use the Bazel @platforms repository for platform constraints Fixes #1000 PiperOrigin-RevId: 390644226 -- b34e4d2f8a86b54bd483ec4c9c3dd781ad2d8b68 by Abseil Team <absl-team@google.com>: debugging: add some handling for RISC-V The RISC-V architecture uses a downward growing stack and can host Linux using ELF files. Adjust a few sites accordingly to indicate how to handle the RISC-V architecture. PiperOrigin-RevId: 390631894 -- 5fa3a0961bf3dd0799c048956a0128f7b8113f1e by Samuel Benzaquen <sbenza@google.com>: Rename the buffer hash function to LowLevelHash. Although it started as wyhash, it will depart from it so it does not make sense to keep the name. PiperOrigin-RevId: 390483506 -- 2e7867a2301d58ad4cd5abcaa5fd6f0db973ae7b by Abseil Team <absl-team@google.com>: This is an internal change. PiperOrigin-RevId: 390349746 GitOrigin-RevId: 3a9b4e8e5ecba532db5cc4ac12d12660307ce9fb Change-Id: I322c3762552a2107e6c6b108c25c01e5efa8aecd	3 years ago
Florin Crișan	8f92175783	CMake: add option to use Google Test already installed on system (#969) ... As of this change, you can use `-DABSL_USE_EXTERNAL_GOOGLETEST=ON -DABSL_FIND_GOOGLETEST=ON` to have Abseil use the standard CMake find_package(GTest) mechanism.	4 years ago
Abseil Team	9c6a50fdd8	Export of internal Abseil changes ... -- 4ff721439234e91caf6f7b772e5f554e7dd423c8 by Benjamin Barenblat <bbaren@google.com>: Remove endian-sensitivity from hash slow path Prior to this commit, the Abseil hash fast path was endian-agnostic, but the slow path assumed a little-endian platform. Change the slow path to be endian-correct, ensuring that values produced by the fast and slow paths are equal even on big-endian systems. PiperOrigin-RevId: 355424258 -- 7f4fe1aa4de46ad0a2ef19fa9c061fc12a7391ed by Abseil Team <absl-team@google.com>: Directly store CordzInfo in the InlineData data contents of InlineRep This greatly reduces the cost of coping and moving cords. Especially the move constructor and move assignment are now back to lean loads and stores without needing any CordzInfo lookups for tracked cords. PiperOrigin-RevId: 355409161 -- 3ca4ca84ed6d98f1e383ffd8d12c28876e905bb3 by Abseil Team <absl-team@google.com>: Add #include <unordered_map> PiperOrigin-RevId: 355386114 -- 30b0ffad0621971b3135148fcc9e183b0dd2a6bb by Abseil Team <absl-team@google.com>: Optimize Cord copy constructor This change avoids double stores of the Cord copy constructor from the zero init of the InlineData / InlineRep contents followed by the assignment and inlines the copy constructor. PiperOrigin-RevId: 355287939 -- 0c043fa7b6e41ca7cefc5edc1e17ad46223e4e77 by CJ Johnson <johnsoncj@google.com>: Now that the absl::Cleanup example returns absl::Status, since we decided on absl::FailedPreconditionError, the precondition should be a positive statement and then the check should be failure to adhere to that positive statement PiperOrigin-RevId: 355216923 -- 9ed922ca5d28fe8790ec6bc0837cf39fbcc92896 by Gennadiy Rozental <rogeeff@google.com>: Do not set mvsc linker flags for clang-cl (fixes #874) Import of https://github.com/abseil/abseil-cpp/pull/891 PiperOrigin-RevId: 355199380 GitOrigin-RevId: 4ff721439234e91caf6f7b772e5f554e7dd423c8 Change-Id: I3d9d2383549720d7a91f9108dfcd979ad6632fce	4 years ago
Abseil Team	5d8fc91922	Export of internal Abseil changes ... -- fcedaa5714efab8738446fa21620b827a40a3458 by Derek Mauro <dmauro@google.com>: Uses Wyhash in the implementation of absl::Hash for hashing sequences of more than 16 bytes on some platforms. Due to the per-process randomization of the seed used by absl::Hash, users should not notice this change, other than possibly getting better performance. This change only affects platforms where absl::uint128 is implemented with an intrinsic (and where sizeof(size_t)==8) since Wyhash relies on fast 128-bit multiplication for speed. PiperOrigin-RevId: 343956735 -- 085e108c760084f19caa21dbeb2118de2be3f8f0 by Abseil Team <absl-team@google.com>: Internal change for cord ring PiperOrigin-RevId: 343919274 -- 4c333278ad14d6692f203074b902506008ad624a by Jorg Brown <jorg@google.com>: Minimize strings_internal::StringConstant further, by removing the need for the compiler to instantiate a compile-time class function. PiperOrigin-RevId: 343878568 -- 71c3c8c7b7821b67997e3d5345aaec67f93f266f by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 343838259 GitOrigin-RevId: fcedaa5714efab8738446fa21620b827a40a3458 Change-Id: Ifb91895a82d11e743acd42fe97ab7fb70712b7df	4 years ago
Abseil Team	768eb2ca28	Export of internal Abseil changes ... -- f012012ef78234a6a4585321b67d7b7c92ebc266 by Laramie Leavitt <lar@google.com>: Slight restructuring of absl/random/internal randen implementation. Convert round-keys.inc into randen_round_keys.cc file. Consistently use a 128-bit pointer type for internal method parameters. This allows simpler pointer arithmetic in C++ & permits removal of some constants and casts. Remove some redundancy in comments & constexpr variables. Specifically, all references to Randen algorithm parameters use RandenTraits; duplication in RandenSlow removed. PiperOrigin-RevId: 312190313 -- dc8b42e054046741e9ed65335bfdface997c6063 by Abseil Team <absl-team@google.com>: Internal change. PiperOrigin-RevId: 312167304 -- f13d248fafaf206492c1362c3574031aea3abaf7 by Matthew Brown <matthewbr@google.com>: Cleanup StrFormat extensions a little. PiperOrigin-RevId: 312166336 -- 9d9117589667afe2332bb7ad42bc967ca7c54502 by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 312105213 -- 9a12b9b3aa0e59b8ee6cf9408ed0029045543a9b by Abseil Team <absl-team@google.com>: Complete IGNORE_TYPE macro renaming. PiperOrigin-RevId: 311999699 -- 64756f20d61021d999bd0d4c15e9ad3857382f57 by Gennadiy Rozental <rogeeff@google.com>: Switch to fixed bytes specific default value. This fixes the Abseil Flags for big endian platforms. PiperOrigin-RevId: 311844448 -- bdbe6b5b29791dbc3816ada1828458b3010ff1e9 by Laramie Leavitt <lar@google.com>: Change many distribution tests to use pcg_engine as a deterministic source of entropy. It's reasonable to test that the BitGen itself has good entropy, however when testing the cross product of all random distributions x all the architecture variations x all submitted changes results in a large number of tests. In order to account for these failures while still using good entropy requires that our allowed sigma need to account for all of these independent tests. Our current sigma values are too restrictive, and we see a lot of failures, so we have to either relax the sigma values or convert some of the statistical tests to use deterministic values. This changelist does the latter. PiperOrigin-RevId: 311840096 GitOrigin-RevId: f012012ef78234a6a4585321b67d7b7c92ebc266 Change-Id: Ic84886f38ff30d7d72c126e9b63c9a61eb729a1a	5 years ago