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| git_commit |
commit 57cf1ff8d8a1acaf949d866b52b7c8841a49f46d Author: Nikolas Klauser <nikolasklauser@berlin.de> Date: Thu Dec 11 10:28:58 2025 +0100 [libc++] Remove initializer_list specific optimization in __tree (#169413) We've seen in quite a few cases while optimizing `__tree`'s copy construction that `_DetachedTreeCache` is actually quite slow and not necessarily an optimization at all. This patch removes the code, since it's now only used by `operator=(initializer_list)`, which should be quite cold code. We might look into actually optimizing it again in the future, but I doubt an optimization will be small enough compared to the likely speedup in real-world code this would give. |
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ldionne-old-macbook-results test results
| Run | Order | Start Time | Duration |
|---|---|---|---|
| Current | 562304 | 2025-12-16T16:40:01 | 0:00:00 |
| Previous | 562303 | 2025-12-16T16:40:01 | 0:00:00 |
| Baseline | 485288 | 2025-12-16T16:40:01 | 0:00:00 |
Tests Summary
| Status Group | # | # (B) |
|---|---|---|
| Performance Improvements | 5 | 0 |
| Added Tests | 0 | 16 |
| Unchanged Tests | 75 | 64 |
| Total Tests | 80 |
| Performance Improvements - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 753_ns3_r | -1.75% | 10.228 | 10.049 | - | 0.00% | - |
| 706_stockfish_r | -1.69% | 21.576 | 21.211 | - | 0.00% | - |
| 709_cactus_r | -1.09% | 19.735 | 19.519 | - | 0.00% | - |
| 707_ntest_r | -1.06% | 16.556 | 16.380 | - | 0.00% | - |
| 727_cppcheck_r | -1.01% | 24.973 | 24.721 | - | 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 |
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