cd60ee9d6e
Similar to #141261. These aren't easy to test without write MIR tests in areas we don't currently have tests. I'm not sure we use X0_Pair anywhere today. I'm going to try to migrate RISCVMakeCompressible to use copyToReg so we can share that code instead of basically duplicating it. I'm still concerned that target independent code may fold an extract_subreg operation and get an incorrect register if we do start using X0_Pair. We may have to special case dummy_reg_pair_with_x0 in the encoder and printer to be safe.
The LLVM Compiler Infrastructure
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.
Getting the Source Code and Building LLVM
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.
Getting in touch
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.