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git_commit commit 841895543edcf98bd16027c6b85fe7c6419a4566
Author: Petr Hosek <phosek@google.com>
Date: Tue Jan 7 13:45:48 2025 -0800

[libcxx] Use alias for detecting overriden function (#120805)

This mechanism is preferable in environments like embedded since it
doesn't require special handling of the custom section.

This is a reland of https://github.com/llvm/llvm-project/pull/114961
which addresses the issue reported by downstream users. Specifically,
the two differences from the previous version are:

* The internal `symbol##_impl__` symbol in the Mach-O implementation is
annotated with `__attribute__((used))` to prevent LTO from deleting it
which we've seen in the previous version.
* `__is_function_overridden` is marked as `inline` so these symbols are
placed in a COMDAT (or fully inlined) to avoid duplicate symbol errors
which we've seen in the previous version.
Filter

ldionne-old-macbook-results test results

Run Order Start Time Duration
Current 523050 2025-12-16T16:40:01 0:00:00
Previous 523049 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 3 0
Performance Improvements 3 0
Added Tests 0 18
Unchanged Tests 84 72
Total Tests 90

Performance Regressions - execution_time Δ Previous Current σ Δ (B) σ (B)
727_cppcheck_r 8.29% 25.654 27.781 - 0.00% -
753_ns3_r 2.57% 10.341 10.607 - 0.00% -
707_ntest_r 1.86% 17.803 18.134 - 0.00% -

Performance Improvements - execution_time Δ Previous Current σ Δ (B) σ (B)
731_astcenc_r -2.98% 10.350 10.042 - 0.00% -
710_omnetpp_r -1.34% 8.665 8.549 - 0.00% -
767_nest_r -1.18% 14.428 14.258 - 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: 0.12s
Name Current %
706_stockfish_r 22.098 -
707_ntest_r 18.134 1.86%
709_cactus_r 19.775 -
710_omnetpp_r 8.549 -1.34%
721_gcc_r 12.913 -
723_llvm_r 11.458 -
727_cppcheck_r 27.781 8.29%
729_abc_r 18.634 -
731_astcenc_r 10.042 -2.98%
734_vpr_r 15.524 -
735_gem5_r 13.731 -
736_ocio_r 16.180 -
737_gmsh_r 12.991 -
748_flightdm_r 8.990 -
750_sealcrypto_r 18.370 -
753_ns3_r 10.607 2.57%
766_femflow_r 12.774 -
767_nest_r 14.258 -1.18%
Geometric Mean 14.440 -