7c7702b318
https://discourse.llvm.org/t/parallel-input-file-parsing/60164 initializeSymbols currently sets Defined::section and handles non-prevailing COMDAT groups. Move the code to the parallel postParse to reduce work from the single-threading code path and make parallel section initialization infeasible. Postpone reporting duplicate symbol errors so that the messages have the section information. (`Defined::section` is assigned in postParse and another thread may not have the information). * duplicated-synthetic-sym.s: BinaryFile duplicate definition (very rare) now has no section information * comdat-binding: `%t/w.o %t/g.o` leads to an undesired undefined symbol. This is not ideal but we report a diagnostic to inform that this is unsupported. (See release note) * comdat-discarded-lazy.s: %tdef.o is unextracted. The new behavior (discarded section error) makes more sense * i386-comdat.s: switched to a better approach working around .gnu.linkonce.t.__x86.get_pc_thunk.bx in glibc<2.32 for x86-32. Drop the ancient no-longer-relevant workaround for __i686.get_pc_thunk.bx Depends on D120640 Differential Revision: https://reviews.llvm.org/D120626
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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 pack-relative-relocs`` is now available to support ``DT_RELR`` for glibc 2.36+.
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(`D120701 <https://reviews.llvm.org/D120701>`_)
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Breaking changes
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----------------
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* The GNU ld incompatible ``--no-define-common`` has been removed.
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* The obscure ``-dc``/``-dp`` options have been removed.
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* ``-d`` is now ignored.
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* If a prevailing COMDAT group defines STB_WEAK symbol, having a STB_GLOBAL symbol in a non-prevailing group is now rejected with a diagnostic.
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(`D120626 <https://reviews.llvm.org/D120626>`_)
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COFF Improvements
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-----------------
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* Added autodetection of MSVC toolchain, a la clang-cl. Also added /winsysroot
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support for explicit specification of MSVC toolchain location.
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(`D118070 <https://reviews.llvm.org/D118070>`_)
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* ...
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MinGW Improvements
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------------------
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* ...
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MachO Improvements
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------------------
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* Item 1.
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WebAssembly Improvements
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------------------------
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