[llvm][SPIRV] Add pass to lower Ctors/Dtors for SPIRV (#187509) This PR adds a new SPIRV pass that generates a kernel named "spirv$device$init" that iterates the pointers in the table pointed by __init_array_start and __init_array_end and executes them. It also generates symbols for each constructor with the form __init_array_object_NAME_PRIORITY. These symbols will be used by the Level Zero plugin in the liboffload runtime (with the support introduced by #187510) to generate the aforementioned table as spirv-link cannot create the table itself. It also does the same thing for destructors, with the kernel name being "spirv$device$fini", the table pointers __fini_array_start and __fini_array_end, and the generated symbols prefix __fini_array_object. The code was mostly generated by Claude 4.5 and has been reviewed by me to the best of my ability.
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.