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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. |
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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