What are copy elision and return value optimization? Copy elision is an optimization implemented by most compilers to prevent extra (potentially expensive) copies in certain situations It makes returning by value or pass-by-value feasible in practice (restrictions apply)
c++ - How does guaranteed copy elision work? - Stack Overflow Copy elision was permitted to happen under a number of circumstances However, even if it was permitted, the code still had to be able to work as if the copy were not elided Namely, there had to be an accessible copy and or move constructor Guaranteed copy elision redefines a number of C++ concepts, such that certain circumstances where copies moves could be elided don't actually provoke a
c++ Moving a temporary object prevents copy elision (fix available . . . Moving a temporary object prevents copy elision (fix available)clang(-Wpessimizing-move) I am using clang-14 and vscode, vscode's quick fix let me delete std::move, but why? As far as i know, unique_ptr can't be passed as a parameter directly
c - Enable Disable Hardware Lock Elision - Stack Overflow I am using glibc 2 24 version It has lock elision path included for pthread_mutex_lock implementation with Transactional Synchronization Extensions such as _xbegin() and _xend() The hardware is
Disable copy elision in C++ - Stack Overflow Disclaimer: Goal of research is how to disable copy elision and return value optimization for supplied part of code Please avoid from answering if want to mention something like XY-problem The qu