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git_commit commit 692c5cdb56a321b0b0e97dd08cf90878cd6970fb
Author: Hui <hui.xie1990@gmail.com>
Date: Sat Jun 7 08:47:46 2025 +0100

[libc++] Do not call `reserve` in flat containers if underlying container is user defined (#140379)

This is brought up in the LWG reflector. We currently call `reserve` if
the underlying container has one. But the spec does not specify what
`reserve` should do for Sequence Container. So in theory if the
underlying container is user defined type and it can have a function
called `reserve` which does something completely different.

The fix is to just call `reserve` for STL containers if it has one
Filter

ldionne-old-macbook-results test results

Run Order Start Time Duration
Current 540188 2025-12-16T16:40:01 0:00:00
Previous 540134 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 5 0
Added Tests 0 17
Unchanged Tests 84 73
Total Tests 90

Performance Regressions - execution_time Δ Previous Current σ Δ (B) σ (B)
734_vpr_r 1.07% 15.381 15.546 - 0.00% -

Performance Improvements - execution_time Δ Previous Current σ Δ (B) σ (B)
723_llvm_r -4.89% 12.113 11.521 - 0.00% -
753_ns3_r -1.31% 10.803 10.661 - 0.00% -
731_astcenc_r -1.27% 10.177 10.048 - 0.00% -
721_gcc_r -1.21% 13.102 12.943 - 0.00% -
707_ntest_r -1.01% 18.149 17.966 - 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
736_ocio_r
737_gmsh_r
748_flightdm_r
750_sealcrypto_r
753_ns3_r
766_femflow_r
767_nest_r


Report Time: 0.21s
Name Current %
706_stockfish_r 22.170 -
707_ntest_r 17.966 -1.01%
709_cactus_r 19.759 -
710_omnetpp_r 8.482 -
721_gcc_r 12.943 -1.21%
723_llvm_r 11.521 -4.89%
727_cppcheck_r 24.816 -
729_abc_r 18.843 -
731_astcenc_r 10.048 -1.27%
734_vpr_r 15.546 1.07%
736_ocio_r 16.257 -
737_gmsh_r 13.192 -
748_flightdm_r 8.995 -
750_sealcrypto_r 18.544 -
753_ns3_r 10.661 -1.31%
766_femflow_r 12.841 -
767_nest_r 14.150 -
Geometric Mean 14.420 -