[ADT] Reduce copies and recursion in StringSwitch (#125362) Optimize the `.Cases` and `.CasesLower` functions to avoid needlessly recursing on each case and copying the associated values. We can instead take `Value` by reference and short-circuit by using the `||` operator. Note that while the implementation uses variadic templates, we cannot simplify the public functions in the same way. This is because the current API forces the arguments to be converted to `StringLiterals` and places the `Value` parameter at the very end. Even if we did some tricks like split the parameter pack to separate out the `Value`, I do not see how we could force conversion to `StringLiteral`.
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.