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This allows the input section matching algorithm to be separated from output section descriptions. This allows a group of sections to be assigned to multiple output sections, providing an explicit version of --enable-non-contiguous-regions's spilling that doesn't require altering global linker script matching behavior with a flag. It also makes the linker script language more expressive even if spilling is not intended, since input section matching can be done in a different order than sections are placed in an output section. The implementation reuses the backend mechanism provided by --enable-non-contiguous-regions, so it has roughly similar semantics and limitations. In particular, sections cannot be spilled into or out of INSERT, OVERWRITE_SECTIONS, or /DISCARD/. The former two aren't intrinsic, so it may be possible to relax those restrictions later.
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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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* ``-z nosectionheader`` has been implemented to omit the section header table.
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The operation is similar to ``llvm-objcopy --strip-sections``.
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(`#101286 <https://github.com/llvm/llvm-project/pull/101286>`_)
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* Section ``CLASS`` linker script syntax binds input sections to named classes,
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which are referenced later one or more times. This provides access to the
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automatic spilling mechanism of `--enable-non-contiguous-regions` without
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globally changing the semantics of section matching. It also independently
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increases the expressive power of linker scripts.
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(`#95323 <https://github.com/llvm/llvm-project/pull/95323>`_)
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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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