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authorTobias Hieta <tobias@hieta.se>2023-07-25 13:57:22 +0200
committerTobias Hieta <tobias@hieta.se>2023-07-25 13:58:49 +0200
commit4706251a3186c34da0ee8fd894f7e6b095da8fdc (patch)
treef74bb20a43f52def66fa486bbdded8ec3a32c378 /lld/docs/ReleaseNotes.rst
parentab720289ca8f9b04674b915f6a74d81847c9c341 (diff)
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Clear release notes for 18.xllvmorg-18-init
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@@ -26,84 +26,12 @@ Non-comprehensive list of changes in this release
ELF Improvements
----------------
-* When ``--threads=`` is not specified, the number of concurrency is now capped to 16.
- A large ``--thread=`` can harm performance, especially with some system
- malloc implementations like glibc's.
- (`D147493 <https://reviews.llvm.org/D147493>`_)
-* ``--remap-inputs=`` and ``--remap-inputs-file=`` are added to remap input files.
- (`D148859 <https://reviews.llvm.org/D148859>`_)
-* ``--lto=`` is now available to support ``clang -funified-lto``
- (`D123805 <https://reviews.llvm.org/D123805>`_)
-* ``--lto-CGO[0-3]`` is now available to control ``CodeGenOpt::Level`` independent of the LTO optimization level.
- (`D141970 <https://reviews.llvm.org/D141970>`_)
-* ``--check-dynamic-relocations=`` is now correct 32-bit targets when the addend is larger than 0x80000000.
- (`D149347 <https://reviews.llvm.org/D149347>`_)
-* ``--print-memory-usage`` has been implemented for memory regions.
- (`D150644 <https://reviews.llvm.org/D150644>`_)
-* ``SHF_MERGE``, ``--icf=``, and ``--build-id=fast`` have switched to 64-bit xxh3.
- (`D154813 <https://reviews.llvm.org/D154813>`_)
-* Quoted output section names can now be used in linker scripts.
- (`#60496 <https://github.com/llvm/llvm-project/issues/60496>`_)
-* ``MEMORY`` can now be used without a ``SECTIONS`` command.
- (`D145132 <https://reviews.llvm.org/D145132>`_)
-* ``REVERSE`` can now be used in input section descriptions to reverse the order of input sections.
- (`D145381 <https://reviews.llvm.org/D145381>`_)
-* Program header assignment can now be used within ``OVERLAY``. This functionality was accidentally lost in 2020.
- (`D150445 <https://reviews.llvm.org/D150445>`_)
-* Operators ``^`` and ``^=`` can now be used in linker scripts.
-* LoongArch is now supported.
-* ``DT_AARCH64_MEMTAG_*`` dynamic tags are now supported.
- (`D143769 <https://reviews.llvm.org/D143769>`_)
-* AArch32 port now supports BE-8 and BE-32 modes for big-endian.
- (`D140201 <https://reviews.llvm.org/D140201>`_)
- (`D140202 <https://reviews.llvm.org/D140202>`_)
- (`D150870 <https://reviews.llvm.org/D150870>`_)
-* ``R_ARM_THM_ALU_ABS_G*`` relocations are now supported.
- (`D153407 <https://reviews.llvm.org/D153407>`_)
-* ``.ARM.exidx`` sections may start at non-zero output section offset.
- (`D148033 <https://reviews.llvm.org/D148033>`_)
-* Arm Cortex-M Security Extensions is now implemented.
- (`D139092 <https://reviews.llvm.org/D139092>`_)
-* BTI landing pads are now added to PLT entries accessed by range extension thunks or relative vtables.
- (`D148704 <https://reviews.llvm.org/D148704>`_)
- (`D153264 <https://reviews.llvm.org/D153264>`_)
-* AArch64 short range thunk has been implemented to mitigate the performance loss of a long range thunk.
- (`D148701 <https://reviews.llvm.org/D148701>`_)
-* ``R_AVR_8_LO8/R_AVR_8_HI8/R_AVR_8_HLO8/R_AVR_LO8_LDI_GS/R_AVR_HI8_LDI_GS`` have been implemented.
- (`D147100 <https://reviews.llvm.org/D147100>`_)
- (`D147364 <https://reviews.llvm.org/D147364>`_)
-* ``--no-power10-stubs`` now works for PowerPC64.
-* ``DT_PPC64_OPT`` is now supported;
- (`D150631 <https://reviews.llvm.org/D150631>`_)
-* ``PT_RISCV_ATTRIBUTES`` is added to include the SHT_RISCV_ATTRIBUTES section.
- (`D152065 <https://reviews.llvm.org/D152065>`_)
-* ``R_RISCV_PLT32`` is added to support C++ relative vtables.
- (`D143115 <https://reviews.llvm.org/D143115>`_)
-* RISC-V global pointer relaxation has been implemented. Specify ``--relax-gp`` to enable the linker relaxation.
- (`D143673 <https://reviews.llvm.org/D143673>`_)
-* The symbol value of ``foo`` is correctly handled when ``--wrap=foo`` and RISC-V linker relaxation are used.
- (`D151768 <https://reviews.llvm.org/D151768>`_)
-* x86-64 large data sections are now placed away from code sections to alleviate relocation overflow pressure.
- (`D150510 <https://reviews.llvm.org/D150510>`_)
-
Breaking changes
----------------
COFF Improvements
-----------------
-* lld-link can now find libraries with relative paths that are relative to
- `/libpath`. Before it would only be able to find libraries relative to the
- current directory.
- I.e. ``lld-link /libpath:c:\relative\root relative\path\my.lib`` where before
- we would have to do ``lld-link /libpath:c:\relative\root\relative\path my.lib``
-* lld-link learned -print-search-paths that will print all the paths where it will
- search for libraries.
-* By default lld-link will now search for libraries in the toolchain directories.
- Specifically it will search:
- ``<toolchain>/lib``, ``<toolchain>/lib/clang/<version>/lib`` and
- ``<toolchain>/lib/clang/<version>/lib/windows``.
-
MinGW Improvements
------------------
@@ -115,7 +43,3 @@ WebAssembly Improvements
Fixes
#####
-
-* Arm exception index tables (.ARM.exidx sections) are now output
- correctly when they are at a non zero offset within their output
- section. (`D148033 <https://reviews.llvm.org/D148033>`_)