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| git_commit |
commit 713839729c97d1ac9492c516d0bf5e1add27fbd3 Author: Nikolas Klauser <nikolasklauser@berlin.de> Date: Sun Jun 29 17:52:50 2025 +0200 [Clang] Add __builtin_invoke and use it in libc++ (#116709) `std::invoke` is currently quite heavy compared to a function call, since it involves quite heavy SFINAE. This can be done significantly more efficient by the compiler, since most calls to `std::invoke` are simple function calls and 6 out of the seven overloads for `std::invoke` exist only to support member pointers. Even these boil down to a few relatively simple checks. Some real-world testing with this patch revealed some significant results. For example, instantiating `std::format("Banane")` (and its callees) went down from ~125ms on my system to ~104ms. |
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ldionne-old-macbook-results test results
| Run | Order | Start Time | Duration |
|---|---|---|---|
| Current | 542778 | 2025-12-16T16:40:01 | 0:00:00 |
| Previous | 542717 | 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 | 4 | 0 |
| Added Tests | 0 | 17 |
| Unchanged Tests | 80 | 68 |
| Total Tests | 85 |
| Performance Regressions - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 753_ns3_r | 1.72% | 10.673 | 10.857 | - | 0.00% | - |
| Performance Improvements - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 735_gem5_r | -1.66% | 14.036 | 13.803 | - | 0.00% | - |
| 727_cppcheck_r | -1.58% | 24.990 | 24.596 | - | 0.00% | - |
| 729_abc_r | -1.44% | 19.168 | 18.891 | - | 0.00% | - |
| 750_sealcrypto_r | -1.23% | 18.957 | 18.723 | - | 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 |
Report Time: 0.08s