LLVM data structures like llvm::User and llvm::MDNode rely on the value of object storage persisting beyond the lifetime of the object (#24952). This is not standard compliant and causes a runtime crash if LLVM is built with GCC and LTO enabled (#57740). Until these issues are fixed, we need to disable dead store eliminations eliminations based on object lifetime. Bug: https://github.com/llvm/llvm-project/issues/24952 Bug: https://github.com/llvm/llvm-project/issues/57740 Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106943 Reviewed By: MaskRay, thesamesam, nikic Differential Revision: https://reviews.llvm.org/D150505
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.
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