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| os | None |
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| git_commit |
commit 09c266b75db43665b090592782ec13757358a083 Author: Peng Liu <winner245@hotmail.com> Date: Wed May 21 12:10:50 2025 -0400 [libc++] Optimize std::for_each_n for segmented iterators (#135468) This patch enhances the performance of `std::for_each_n` when used with segmented iterators, leading to significant performance improvements, summarized in the tables below. This addresses a subtask of https://github.com/llvm/llvm-project/issues/102817. |
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ldionne-old-macbook-results test results
| Run | Order | Start Time | Duration |
|---|---|---|---|
| Current | 538269 | 2025-12-16T16:40:01 | 0:00:00 |
| Previous | 537431 | 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 | 5 | 0 |
| Performance Improvements | 2 | 0 |
| Added Tests | 0 | 18 |
| Unchanged Tests | 83 | 72 |
| Total Tests | 90 |
| Performance Regressions - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 710_omnetpp_r | 11.65% | 8.490 | 9.479 | - | 0.00% | - |
| 753_ns3_r | 1.62% | 10.617 | 10.789 | - | 0.00% | - |
| 727_cppcheck_r | 1.47% | 24.902 | 25.269 | - | 0.00% | - |
| 723_llvm_r | 1.36% | 11.420 | 11.576 | - | 0.00% | - |
| 707_ntest_r | 1.08% | 18.056 | 18.250 | - | 0.00% | - |
| Performance Improvements - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 748_flightdm_r | -2.06% | 9.117 | 8.929 | - | 0.00% | - |
| 736_ocio_r | -1.47% | 16.536 | 16.292 | - | 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 |
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