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--compress-sections <section-glib>=[none|zlib|zstd] is similar to --compress-debug-sections but applies to broader sections without the SHF_ALLOC flag. lld will report an error if a SHF_ALLOC section is matched. An interesting use case is to compress `.strtab`/`.symtab`, which consume a significant portion of the file size (15.1% for a release build of Clang). An older revision is available at https://reviews.llvm.org/D154641 . This patch focuses on non-allocated sections for safety. Moving `maybeCompress` as D154641 does not handle STT_SECTION symbols for `-r --compress-debug-sections=zlib` (see `relocatable-section-symbol.s` from #66804). Since different output sections may use different compression algorithms, we need CompressedData::type to generalize config->compressDebugSections. GNU ld feature request: https://sourceware.org/bugzilla/show_bug.cgi?id=27452 Link: https://discourse.llvm.org/t/rfc-compress-arbitrary-sections-with-ld-lld-compress-sections/71674 Pull Request: https://github.com/llvm/llvm-project/pull/84855
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===========================
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lld |release| Release Notes
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===========================
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.. contents::
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:local:
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.. only:: PreRelease
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.. warning::
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These are in-progress notes for the upcoming LLVM |release| release.
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Release notes for previous releases can be found on
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`the Download Page <https://releases.llvm.org/download.html>`_.
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Introduction
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============
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This document contains the release notes for the lld linker, release |release|.
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Here we describe the status of lld, including major improvements
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from the previous release. All lld releases may be downloaded
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from the `LLVM releases web site <https://llvm.org/releases/>`_.
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Non-comprehensive list of changes in this release
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=================================================
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ELF Improvements
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----------------
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* ``--compress-sections <section-glib>=[none|zlib|zstd]`` is added to compress
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matched output sections without the ``SHF_ALLOC`` flag.
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(`#84855 <https://github.com/llvm/llvm-project/pull/84855>`_)
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Breaking changes
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----------------
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COFF Improvements
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-----------------
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MinGW Improvements
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------------------
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MachO Improvements
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------------------
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WebAssembly Improvements
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------------------------
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Fixes
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#####
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