| commit | 742ecfc13e8aa34cfff2900e31838f657fcafe30 | [log] [tgz] |
|---|---|---|
| author | Fangrui Song <i@maskray.me> | Mon Jun 02 00:29:27 2025 -0700 |
| committer | Fangrui Song <i@maskray.me> | Mon Jun 02 00:29:27 2025 -0700 |
| tree | 61b6b62f609c4e677c065c70f371c732859aa83d | |
| parent | af2f8a8c14e3bf8c4af8f814c58913e2798b05ef [diff] |
[MC] Relax MCFillFragment and compute fragment offsets eagerly
This builds on top of commit 9d0754ada5dbbc0c009bcc2f7824488419cc5530
("[MC] Relax fragments eagerly") and relaxes fragments eagerly to
eliminate MCSection::HasLayout and `getFragmentOffset` overhead.
Relands 1a47f3f3db66589c11f8ddacfeaecc03fb80c510
Builds with many text sections (e.g. full LTO) shall observe a decrease
in compile time.
---
In addition, ensure `.fill` and `.space` directives with expressions are
re-evaluated during fragment relaxation, as their sizes may change.
Continue iteration to prevent stale, incorrect sizes.
This change has to be coupled with the fragment algorithm change
as otherwise the test test/MC/ELF/layout-interdependency.s would not
converge.
Fixes #123402 and resolves the root cause of #100283, building on error
postponing from commit 38b12d4a7c219b46d1cb52580cbacbdb931262f2.
For AArch64/label-arithmetic-diags-elf.s, the extra iteration
reports a .fill error early and suppresses the fixup/relocation errors.
Just split the tests.
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.