[NFC][DebugInfo] Rewrite more call-sites to insert with iterators (#124288) As part of the "RemoveDIs" work to eliminate debug intrinsics, we're replacing methods that use Instruction*'s as positions with iterators. The call-sites updated in this patch are those where the dyn_cast_or_null cast utility doesn't compose well with iterator insertion. It can distinguish between nullptr and a "present" (non-null) Instruction pointer, but not between a legal and illegal instruction iterator. This can lead to end-iterator dereferences and thus crashes. We can improve this in the future (as parent-pointers can now be accessed from ilist nodes), but for the moment, add explicit tests for end() iterators at the five call sites affected by this.
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.