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git_commit commit adc79324618f0e95914ac0fcb26fe0d942319cab
Author: Yuxuan Chen <ych@fb.com>
Date: Thu Nov 6 10:33:44 2025 -1000

[libcxx] Implement C++20 std::chrono::is_clock, std::chrono::is_clock_v (#160607)

Implemented
[[*time.traits.is.clock*]](https://eel.is/c++draft/time.traits.is.clock)
from [P0355R7](https://wg21.link/p0355r7).

This patch implements the C++20 feature `is_clock` and `is_clock_v`
based on the documentation [on
cppreference](https://en.cppreference.com/w/cpp/chrono/is_clock.html)

Fixes #166049.
Filter

ldionne-old-macbook-results test results

Run Order Start Time Duration
Current 558528 2025-12-16T16:40:01 0:00:00
Previous 558271 2025-12-16T16:40:01 0:00:00
Baseline 485288 2025-12-16T16:40:01 0:00:00


Tests Summary

Status Group # # (B)
Performance Regressions 2 0
Performance Improvements 1 0
Added Tests 0 16
Unchanged Tests 77 64
Total Tests 80

Performance Regressions - execution_time Δ Previous Current σ Δ (B) σ (B)
748_flightdm_r 1.58% 8.867 9.007 - 0.00% -
753_ns3_r 1.09% 10.172 10.284 - 0.00% -

Performance Improvements - execution_time Δ Previous Current σ Δ (B) σ (B)
727_cppcheck_r -1.21% 24.976 24.674 - 0.00% -

Added Tests - execution_time
706_stockfish_r
707_ntest_r
709_cactus_r
710_omnetpp_r
721_gcc_r
723_llvm_r
727_cppcheck_r
729_abc_r
731_astcenc_r
735_gem5_r
736_ocio_r
737_gmsh_r
748_flightdm_r
750_sealcrypto_r
753_ns3_r
766_femflow_r


Report Time: 0.09s
Name Current %
706_stockfish_r 21.650 -
707_ntest_r 16.622 -
709_cactus_r 19.706 -
710_omnetpp_r 8.505 -
721_gcc_r 12.942 -
723_llvm_r 11.495 -
727_cppcheck_r 24.674 -1.21%
729_abc_r 18.738 -
731_astcenc_r 10.100 -
735_gem5_r 13.346 -
736_ocio_r 16.256 -
737_gmsh_r 13.049 -
748_flightdm_r 9.007 1.58%
750_sealcrypto_r 18.471 -
753_ns3_r 10.284 1.09%
766_femflow_r 12.822 -
Geometric Mean 14.157 -