Author: Jez Ng Date: 2022-02-15T14:21:01-05:00 New Revision: e493f08f8222b3a36186331a0d5486b4407ed830
URL: https://github.com/llvm/llvm-project/commit/e493f08f8222b3a36186331a0d5486b4407ed830 DIFF: https://github.com/llvm/llvm-project/commit/e493f08f8222b3a36186331a0d5486b4407ed830.diff LOG: [lld-macho] Fill out release notes for 14.x Differential Revision: https://reviews.llvm.org/D119811 Added: Modified: lld/docs/ReleaseNotes.rst Removed: ################################################################################ diff --git a/lld/docs/ReleaseNotes.rst b/lld/docs/ReleaseNotes.rst index ed4a374d579a3..3601a968bd77b 100644 --- a/lld/docs/ReleaseNotes.rst +++ b/lld/docs/ReleaseNotes.rst @@ -118,10 +118,85 @@ MinGW Improvements * ``--heap`` is now handled. (`D118405 <https://reviews.llvm.org/D118405>`_) -MachO Improvements ------------------- - -* Item 1. +Mach-O Improvements +------------------- + +* The ``ld64.lld.darwinnew`` symlink has been removed. Use ``ld64.lld`` to + invoke the Mach-O backend from now on. Moreover, the symlink + ``ld64.lld.darwinold`` -- and the old Mach-O LLD code that it pointed to -- + have been removed. (`D114842 <https://reviews.llvm.org/D114842>`_) +* The "cannot export hidden symbol" error has been downgraded to a warning. + (`D107011 <https://reviews.llvm.org/D107011>`_) +* Common bitcode symbols are now supported. + (`D107027 <https://reviews.llvm.org/D107027>`_) +* Weak references in bitcode are now supported. + (`D115949 <https://reviews.llvm.org/D115949>`_) +* Thunk insertion now works more reliably. + (`D108897 <https://reviews.llvm.org/D108897>`_, + `D108924 <https://reviews.llvm.org/D108924>`_, + `D109079 <https://reviews.llvm.org/D109079 >`_, + `D116705 <https://reviews.llvm.org/D116705>`_) +* ``-ObjC`` now loads archive members before the symbol resolution phase. + (`D108781 <https://reviews.llvm.org/D108781>`_) +* ``-oso_prefix`` is now supported. + (`D112291 <https://reviews.llvm.org/D112291>`_) +* Properly encode binaries with zero exported symbols. Tools like + ``codesign_allocate`` no longer choke on those binaries. + (`D112589 <https://reviews.llvm.org/D112589>`_) +* We no longer treat architecture mismatches as a fatal error. Use + ``-arch_errors_fatal`` if that behavior is still desired. + (`D113082 <https://reviews.llvm.org/D113082>`_) +* Several performance improvements were done to speed LLD up on projects with + a lot of framework flags and library lookups. Large Swift-based projects + will benefit significantly. + (`D113073 <https://reviews.llvm.org/D113073>`_, + `D113063 <https://reviews.llvm.org/D113063>`_, + `D113153 <https://reviews.llvm.org/D113153>`_, + `D113235 <https://reviews.llvm.org/D113235>`_) +* Several memory-reduction optimizations were done to reduce LLD's RSS + footprint. + (`D113813 <https://reviews.llvm.org/D113813>`_, + `D113818 <https://reviews.llvm.org/D113818>`_) +* Symbol patterns from ``-[un]exported_symbols_list`` are now processed in + parallel. (`D113820 <https://reviews.llvm.org/D113820>`_) +* ``.weak_def_can_be_hidden`` symbols can now be exported. + (`D113167 <https://reviews.llvm.org/D113167>`_) +* ``-S`` -- to omit debug info -- is now handled. + (`D112594 <https://reviews.llvm.org/D112594>`_) +* ``-v`` now writes to stderr instead of stdout. + (`D113020 <https://reviews.llvm.org/D113020>`_) +* Private externs with GOT relocations are now marked as LOCAL in the indirect + symbol table. This allows ``strip -x`` to remove more symbols. + (`D111852 <https://reviews.llvm.org/D111852>`_) +* We no longer generate bogus addresses when ``__TEXT,__gcc_except_tab`` is + renamed. (`D113582 <https://reviews.llvm.org/D113582>`_) +* Unreferenced weak dylib symbols no longer trigger fetches from an archive. + (`D115092 <https://reviews.llvm.org/D115092>`_) +* ``$ld$hide`` symbols are now supported. + (`D115775 <https://reviews.llvm.org/D115775>`_) +* Symbols imported via `-weak_framework` are now properly marked as weak refs. + (`D114397 <https://reviews.llvm.org/D114397>`_) +* ``--warn-dylib-install-name`` and ``--no-warn-dylib-install-name`` were added + to toggle LLD-specific warnings around the use of ``-install_name``. + (`D113534 <https://reviews.llvm.org/D113534>`_) +* Passing both ``--icf=all`` and ``-no_deduplicate`` no longer results in a + warning. (`D110672 <https://reviews.llvm.org/D110672>`_) +* ICF now deduplicates functions with (identical) unwind info too. + (`D109946 <https://reviews.llvm.org/D109946>`_) +* We now support ordering sections based on call graph profile data. + (`D112164 <https://reviews.llvm.org/D112164>`_) +* Map file output now proceeds in parallel with output of the binary. + (`D117069 <https://reviews.llvm.org/D117069>`_) +* The map file now contains dead-stripped symbols too. + (`D114737 <https://reviews.llvm.org/D114737 >`_) +* Multiple TLV sections with diff erent alignments are now handled properly. + (`D116263 <https://reviews.llvm.org/D116263>`_) +* ``--start-lib`` and ``--end-lib`` are now supported. + (`D116913 <https://reviews.llvm.org/D116913 >`_) +* ``-noall_load`` is now supported. + (`D117629 <https://reviews.llvm.org/D117629>`_) +* ``-add_empty_section`` is now supported. + (`D117749 <https://reviews.llvm.org/D117749>`_) WebAssembly Improvements ------------------------ _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
