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git_commit commit 703cfe745b96751c1204bcffe4e56038c809247f
Author: Peng Liu <winner245@hotmail.com>
Date: Sun Apr 13 08:40:21 2025 -0400

[libc++] Replace __libcpp_popcount by __builtin_popcountg (#133937)

`__libcpp_popcount` was previously used as a fallback for `__builtin_popcountg` to ensure compatibility with older compilers (Clang 18 and earlier), as `__builtin_popcountg` became available in Clang 19. Now that support for Clang 18 has been officially dropped in #130142, we can now safely replace all instances of `__libcpp_popcount` with `__builtin_popcountg` and eliminate the fallback logic.
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ldionne-old-macbook-results test results

Run Order Start Time Duration
Current 533938 2025-12-16T16:40:01 0:00:00
Previous 533928 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 18
Unchanged Tests 87 72
Total Tests 90

Performance Regressions - execution_time Δ Previous Current σ Δ (B) σ (B)
734_vpr_r 3.05% 15.121 15.583 - 0.00% -
710_omnetpp_r 2.01% 8.878 9.057 - 0.00% -

Performance Improvements - execution_time Δ Previous Current σ Δ (B) σ (B)
721_gcc_r -1.41% 13.087 12.902 - 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
734_vpr_r
735_gem5_r
736_ocio_r
737_gmsh_r
748_flightdm_r
750_sealcrypto_r
753_ns3_r
766_femflow_r
767_nest_r


Report Time: 0.11s
Name Current %
706_stockfish_r 22.096 -
707_ntest_r 17.782 -
709_cactus_r 19.719 -
710_omnetpp_r 9.057 2.01%
721_gcc_r 12.902 -1.41%
723_llvm_r 11.453 -
727_cppcheck_r 25.511 -
729_abc_r 18.594 -
731_astcenc_r 10.043 -
734_vpr_r 15.583 3.05%
735_gem5_r 13.960 -
736_ocio_r 16.127 -
737_gmsh_r 13.010 -
748_flightdm_r 8.926 -
750_sealcrypto_r 18.325 -
753_ns3_r 10.687 -
766_femflow_r 12.858 -
767_nest_r 14.303 -
Geometric Mean 14.418 -