[CodeGen][NFC] Properly split MachineLICM and EarlyMachineLICM (#113573) Both are based on MachineLICMBase, and the functionality there is "switched" based on a PreRegAlloc flag. This commit is simply about trusting the original value of that flag, defined by the `MachineLICM` and `EarlyMachineLICM` classes. The `PreRegAlloc` flag used to be overwritten it based on MRI.isSSA(), which is un-reliable due to how it is inferred by the MIRParser. I see that we can now define isSSA in MIR (thanks @gargaroff ), meaning the fix isn’t really needed anymore, but redefining that flag still feels wrong. Note that I'm looking into upstreaming more changes to MachineLICM, see [the discourse thread](https://discourse.llvm.org/t/extending-post-regalloc-machinelicm/82725).
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.