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git_commit commit 2c1decb7f76661cf3b77b46b7ac3816401ece3cd
Author: Louis Dionne <ldionne.2@gmail.com>
Date: Thu Dec 11 03:31:22 2025 -0500

[libc++] Don't instantiate __split_buffer with an allocator reference (#171651)

Allocators should be extremely cheap, if not free, to copy. Furthermore,
we have requirements on allocator types that copies must compare equal,
and that move and copy must be the same.

Hence, taking an allocator by reference should not provide benefits
beyond making a copy of it. However, taking the allocator by reference
leads to complexity in __split_buffer, which can be removed if we stop
using that pattern.
Filter

ldionne-old-macbook-results test results

Run Order Start Time Duration
Current 562298 2025-12-16T16:40:01 0:00:00
Previous 562162 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 4 0
Added Tests 0 16
Unchanged Tests 74 64
Total Tests 80

Performance Regressions - execution_time Δ Previous Current σ Δ (B) σ (B)
710_omnetpp_r 3.48% 8.605 8.905 - 0.00% -
748_flightdm_r 1.05% 8.886 8.979 - 0.00% -

Performance Improvements - execution_time Δ Previous Current σ Δ (B) σ (B)
706_stockfish_r -4.64% 21.534 20.536 - 0.00% -
707_ntest_r -4.06% 16.703 16.024 - 0.00% -
709_cactus_r -2.55% 19.730 19.227 - 0.00% -
753_ns3_r -1.29% 10.241 10.109 - 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: 0.18s
Name Current %
706_stockfish_r 20.536 -4.64%
707_ntest_r 16.024 -4.06%
709_cactus_r 19.227 -2.55%
710_omnetpp_r 8.905 3.48%
721_gcc_r 12.975 -
723_llvm_r 11.479 -
727_cppcheck_r 25.395 -
729_abc_r 18.667 -
731_astcenc_r 10.056 -
735_gem5_r 13.467 -
736_ocio_r 16.259 -
737_gmsh_r 12.920 -
748_flightdm_r 8.979 1.05%
750_sealcrypto_r 18.370 -
753_ns3_r 10.109 -1.29%
766_femflow_r 12.799 -
Geometric Mean 14.091 -