[BOLT][AArch64] Add symbolizer for AArch64 disassembler. NFCI (#127969) Add AArch64MCSymbolizer that symbolizes `MCInst` operands during disassembly. The symbolization was previously done in `BinaryFunction::disassemble()`, but it is also required by `scanExternalRefs()` for "lite" mode functionality. Hence, similar to x86, I've implemented the symbolizer interface that uses `BinaryFunction` relocations to properly create instruction operands. I expect the result of the disassembly to be identical after the change. AArch64 disassembler was not calling `tryAddingSymbolicOperand()` for `MOV` instructions. Fix that. Additionally, the disassembler marks `ldr` instructions as branches by setting `IsBranch` parameter to true. Ignore the parameter and rely on `MCPlusBuilder` interface instead. I've modified `--check-encoding` flag to check symolization of operands of instructions that have relocations against them.
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.