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git_commit commit ab3d793982acb946afc2028ca41304913879c6c9
Author: Peng Liu <winner245@hotmail.com>
Date: Wed Feb 19 11:36:45 2025 -0500

[libc++] Optimize ranges::move{,_backward} for vector<bool>::iterator (#121109)

As a follow-up to #121013 (which optimized `ranges::copy`) and #121026
(which optimized `ranges::copy_backward`), this PR enhances the
performance of `std::ranges::{move, move_backward}` for
`vector<bool>::iterator`, addressing a subtask outlined in issue #64038.

The optimizations bring performance improvements analogous to those
achieved for the `{copy, copy_backward}` algorithms: up to 2000x for
aligned moves and 60x for unaligned moves. Moreover, comprehensive
tests covering up to 4 storage words (256 bytes) with odd and even bit
sizes are provided, which validate the proposed optimizations in this
patch.
Filter

ldionne-old-macbook-results test results

Run Order Start Time Duration
Current 527849 2025-12-16T16:40:01 0:00:00
Previous 527838 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 1 0
Performance Improvements 2 0
Added Tests 0 18
Unchanged Tests 87 72
Total Tests 90

Performance Regressions - execution_time Δ Previous Current σ Δ (B) σ (B)
731_astcenc_r 1.20% 10.063 10.184 - 0.00% -

Performance Improvements - execution_time Δ Previous Current σ Δ (B) σ (B)
710_omnetpp_r -1.84% 8.516 8.360 - 0.00% -
723_llvm_r -1.03% 11.531 11.413 - 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 22.071 -
707_ntest_r 17.786 -
709_cactus_r 19.731 -
710_omnetpp_r 8.360 -1.84%
721_gcc_r 12.924 -
723_llvm_r 11.413 -1.03%
727_cppcheck_r 24.591 -
729_abc_r 18.709 -
731_astcenc_r 10.184 1.20%
734_vpr_r 15.382 -
735_gem5_r 13.957 -
736_ocio_r 16.191 -
737_gmsh_r 13.028 -
748_flightdm_r 8.913 -
750_sealcrypto_r 18.275 -
753_ns3_r 10.633 -
766_femflow_r 12.773 -
767_nest_r 14.149 -
Geometric Mean 14.312 -