8c0f3b6e8f
This patch fixes a bug in BOLT's debug line emission where functions that belong to multiple compilation units (such as inline functions in header files) were not handled correctly. Previously, BOLT incorrectly assumed that a binary function could belong to only one compilation unit, leading to incomplete or incorrect debug line information. ### **Problem** When a function appears in multiple compilation units (common scenarios include): * Template instantiated functions * Inline functions defined in header files included by multiple source files BOLT would only emit debug line information for one compilation unit, losing debug information for other CUs where the function was compiled. This resulted in incomplete debugging information and could cause debuggers to fail to set breakpoints or show incorrect source locations. ### **Root Cause** The issue was in BOLT's assumption that each binary function maps to exactly one compilation unit. However, when the same function (e.g., an inline function from a header) is compiled into multiple object files, it legitimately belongs to multiple CUs in the final binary. |
||
|---|---|---|
| .ci | ||
| .github | ||
| bolt | ||
| clang | ||
| clang-tools-extra | ||
| cmake | ||
| compiler-rt | ||
| cross-project-tests | ||
| flang | ||
| flang-rt | ||
| libc | ||
| libclc | ||
| libcxx | ||
| libcxxabi | ||
| libsycl | ||
| libunwind | ||
| lld | ||
| lldb | ||
| llvm | ||
| llvm-libgcc | ||
| mlir | ||
| offload | ||
| openmp | ||
| orc-rt | ||
| polly | ||
| runtimes | ||
| third-party | ||
| utils/bazel | ||
| .clang-format | ||
| .clang-format-ignore | ||
| .clang-tidy | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| LICENSE.TXT | ||
| pyproject.toml | ||
| README.md | ||
| SECURITY.md | ||
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, 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.