[lld][LoongArch] Prevent relaxation oscillation for LA.PCRel and CALL (#226713) Relaxation of pcalau12i+addi (relaxPCHi20Lo12, isInt<22>) and call36/call30 (relaxMediumCall, isInt<28>) can oscillate: shrinking one section moves a symbol, which flips isInt<N> for other sites and changes bytesDropped again. Follow the same approach as RISCV::relaxCall: after a few passes, do not allow remove to increase beyond the previous pass's value (cur - delta). Pass that cap as prevRemove into the two helpers; range checks may still clear remove (0) when the target goes out of range. Fixes #226712 (cherry picked from commit 32757891963d7a544dbcf6a52e8f7a7c67e273aa)
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.