[Statepoint] Treat undef operands less specially (#119682) This reverts commit f7443905af1e06eaacda1e437fff8d54dc89c487. This is to avoid an assertion if an undef operand appears in a stackmap. This is important to avoid hitting verifier errors when register allocation starts adding undefs in error scenarios. Rather than trying to treat undef operands as special, leave them alone and avoid producing an invalid spill. It would a bit more precise to produce a spill of an undef register here, but that's not exposed through the storeRegToStackSlot API. https://reviews.llvm.org/D122605 This was an alternative to https://reviews.llvm.org/D122582
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.