[libc++] Short-cut constraints of single-argument `any` constructor (#177082) When a default template argument of a function template uses `std::is_copy_constructible<T>::value` and `T` is convertible from and to `any`, the changes in 21dc73f6a46cd786394f10f5aef46ec4a2d26175 would introduce constraint meta-recursion when compiling with Clang. This patch short-cuts constraints of the related constructor to avoid computing `is_copy_constructible<T>` when `decay_t<T>` is `any`, which gets rid of constraint meta-recursion in the overload resolution of copy construction of `T`. Fixes #176877. (cherry picked from commit aa5428864e86f8e38806fc92d14cadc68b3d0667)
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called “LLVM”. This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.
Other components include: the libc++ C++ standard library, the LLD linker, and more.
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.
The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.