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| git_commit |
commit b3a199469c9d54fb3bdabf6dff5677b401f8fef6 Author: Louis Dionne <ldionne.2@gmail.com> Date: Thu Oct 16 23:40:58 2025 -0400 [libc++] Properly implement array cookies in the ARM ABI (#160182) When we implemented array cookie support for hardening std::unique_ptr, the implementation was only done for the Itanium ABI. I did not initially realize that ARM was using a different ABI for array cookies, so unique_ptr should not have been hardened on ARM. However, we were also incorrectly setting the ABI-detection macro: we were pretending to be using a vanilla Itanium ABI when in reality the (similar but different) ARM ABI was in use. As a result, unique_ptr was using the wrong representation for array cookies on ARM, which fortunately only mattered in the case of overaligned types. This patch fixes that. rdar://160852193 |
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ldionne-old-macbook-results test results
| Run | Order | Start Time | Duration |
|---|---|---|---|
| Current | 556303 | 2025-12-16T16:40:01 | 0:00:00 |
| Previous | 556531 | 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 | 2 | 0 |
| Performance Improvements | 6 | 0 |
| Added Tests | 0 | 16 |
| Unchanged Tests | 72 | 64 |
| Total Tests | 80 |
| Performance Regressions - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 710_omnetpp_r | 4.75% | 8.284 | 8.678 | - | 0.00% | - |
| 727_cppcheck_r | 1.06% | 24.587 | 24.846 | - | 0.00% | - |
| Performance Improvements - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 706_stockfish_r | -4.20% | 21.557 | 20.652 | - | 0.00% | - |
| 709_cactus_r | -2.96% | 19.864 | 19.276 | - | 0.00% | - |
| 735_gem5_r | -2.79% | 13.703 | 13.321 | - | 0.00% | - |
| 707_ntest_r | -2.69% | 16.676 | 16.227 | - | 0.00% | - |
| 737_gmsh_r | -2.65% | 13.193 | 12.843 | - | 0.00% | - |
| 731_astcenc_r | -2.33% | 10.356 | 10.115 | - | 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 |
Report Time: 0.09s