40b2eb62aa
RFC https://discourse.llvm.org/t/rfc-dwarfdebug-fix-and-improve-handling-imported-entities-types-and-static-local-in-subprogram-and-lexical-block-scopes/68544 !Note! Extracted from the following patch for review purpose only, should be squashed with the next patch (D144004) before committing. Currently the back-end emits imported entities in `DwarfDebug::beginModule()`. However in case an imported declaration is a function, it must point to an abstract subprogram if it exists (see PR51501). But in `DwarfDebug::beginModule()` the DWARF generator doesn't have information to identify if an abstract subprogram needs to be created. Only by entering `DwarfDebug::endModule()` all subprograms are processed, so it's clear which subprogram DIE should be referred to. Hence, the patch moves the emission there. The patch is need to fix PR51501, but it only does the preliminary work. Since it changes the order of debug entities in emitted DWARF and therefore affect many tests it's separated from the fix for the sake of simplifying review. Note that there are other issues with handling an imported declaration in `DwarfDebug::beginModule()`. They are described in more details in D114705. Differential Revision: https://reviews.llvm.org/D143985 Depends on D143984
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.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Getting in touch
Join the LLVM Discourse forums, Discord chat, or #llvm IRC channel on OFTC.
The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.