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git_commit commit 437ad06f762ab07d89badecdd20627db200b98d3
Author: A. Jiang <de34@live.cn>
Date: Tue Jun 3 10:34:45 2025 +0800

[libc++] Use `__reference_constructs_from_temporary` if eligible (#141916)

Currently, libc++'s `<tuple>` is using the deprecated
`__reference_binds_to_temporary` intrinsic. This PR starts to use
`__reference_constructs_from_temporary` if possible.

It seems that `__reference_constructs_from_temporary` should be used via
an internal type traits provided in
`<__type_traits/reference_constructs_from_temporary.h>`. But given the
old intrinsic was directly used, this PR doesn't switch to the current
convention yet.

P2255R2 is related. Although the paper indicated that constructors of
`tuple` should be deleted in such a case.

---------

Co-authored-by: Nikolas Klauser <nikolasklauser@berlin.de>
Filter

ldionne-old-macbook-results test results

Run Order Start Time Duration
Current 539616 2025-12-16T16:40:01 0:00:00
Previous 539560 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 1 0
Added Tests 1 18
Unchanged Tests 83 72
Total Tests 90

Performance Regressions - execution_time Δ Previous Current σ Δ (B) σ (B)
707_ntest_r 4.00% 17.870 18.586 - 0.00% -
737_gmsh_r 2.61% 13.145 13.489 - 0.00% -
727_cppcheck_r 1.60% 24.728 25.124 - 0.00% -
766_femflow_r 1.43% 12.807 12.990 - 0.00% -
734_vpr_r 1.16% 15.320 15.498 - 0.00% -

Performance Improvements - execution_time Δ Previous Current σ Δ (B) σ (B)
748_flightdm_r -1.33% 8.937 8.818 - 0.00% -

Added Tests - execution_time
735_gem5_r

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: 0.17s
Name Current %
706_stockfish_r 22.064 -
707_ntest_r 18.586 4.00%
709_cactus_r 19.735 -
710_omnetpp_r 8.480 -
721_gcc_r 12.952 -
723_llvm_r 11.588 -
727_cppcheck_r 25.124 1.60%
729_abc_r 18.834 -
731_astcenc_r 10.087 -
734_vpr_r 15.498 1.16%
735_gem5_r 14.062 -
736_ocio_r 16.246 -
737_gmsh_r 13.489 2.61%
748_flightdm_r 8.818 -1.33%
750_sealcrypto_r 18.506 -
753_ns3_r 10.761 -
766_femflow_r 12.990 1.43%
767_nest_r 14.255 -
Geometric Mean 14.460 -