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git_commit commit b391e80f52f4248e4e2b766c25f83d5e62ef2d56
Author: Peng Liu <winner245@hotmail.com>
Date: Tue Mar 18 12:05:40 2025 -0400

[libc++] Remove redundant assignments in bitset string-like constructors (#121424)

The following three string-like constructors for `std::bitset`
- `bitset(const CharT* str, std::size_t n, CharT zero, CharT one)`;
- `bitset(const std::basic_string<CharT, Traits, Alloc>& str, typename
std::basic_string<CharT, Traits, Alloc>::size_type pos, CharT zero,
CharT one)`;
- `bitset(std::basic_string_view<CharT, Traits> str, std::size_t pos,
std::size_t n, CharT zero, CharT one)`

already initialize the underlying storage array to all zeroes via
default-constructor of the base class `__bitset`. Therefore,
re-assigning the storage array to zeroes via `std::fill_n` in the
string-like constructors is truly redundant.
Filter

ldionne-old-macbook-results test results

Run Order Start Time Duration
Current 531030 2025-12-16T16:40:01 0:00:00
Previous 531018 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 2 0
Added Tests 0 18
Unchanged Tests 87 72
Total Tests 90

Performance Regressions - execution_time Δ Previous Current σ Δ (B) σ (B)
748_flightdm_r 4.79% 8.852 9.276 - 0.00% -

Performance Improvements - execution_time Δ Previous Current σ Δ (B) σ (B)
727_cppcheck_r -2.19% 25.112 24.562 - 0.00% -
767_nest_r -1.11% 14.295 14.137 - 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: 0.06s
Name Current %
706_stockfish_r 22.086 -
707_ntest_r 18.001 -
709_cactus_r 19.678 -
710_omnetpp_r 8.584 -
721_gcc_r 12.934 -
723_llvm_r 11.450 -
727_cppcheck_r 24.562 -2.19%
729_abc_r 18.612 -
731_astcenc_r 10.024 -
734_vpr_r 15.306 -
735_gem5_r 13.801 -
736_ocio_r 16.130 -
737_gmsh_r 13.023 -
748_flightdm_r 9.276 4.79%
750_sealcrypto_r 18.328 -
753_ns3_r 10.691 -
766_femflow_r 12.772 -
767_nest_r 14.137 -1.11%
Geometric Mean 14.347 -