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d644801757
It resolves clang selfhosting with std::once() for Cygwin. FIXME: It may be EmulatedTLS-generic also for X86-Android. FIXME: Pass EmulatedTLS to LLVM CodeGen from Clang with -femulated-tls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256134 91177308-0d34-0410-b5e6-96231b3b80d8
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======================
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LLVM 3.8 Release Notes
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======================
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.. contents::
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:local:
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.. warning::
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These are in-progress notes for the upcoming LLVM 3.8 release. You may
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prefer the `LLVM 3.7 Release Notes <http://llvm.org/releases/3.7.0/docs
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/ReleaseNotes.html>`_.
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Introduction
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============
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This document contains the release notes for the LLVM Compiler Infrastructure,
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release 3.8. Here we describe the status of LLVM, including major improvements
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from the previous release, improvements in various subprojects of LLVM, and
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some of the current users of the code. All LLVM releases may be downloaded
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from the `LLVM releases web site <http://llvm.org/releases/>`_.
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For more information about LLVM, including information about the latest
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release, please check out the `main LLVM web site <http://llvm.org/>`_. If you
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have questions or comments, the `LLVM Developer's Mailing List
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<http://lists.llvm.org/mailman/listinfo/llvm-dev>`_ is a good place to send
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them.
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Note that if you are reading this file from a Subversion checkout or the main
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LLVM web page, this document applies to the *next* release, not the current
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one. To see the release notes for a specific release, please see the `releases
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page <http://llvm.org/releases/>`_.
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Non-comprehensive list of changes in this release
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=================================================
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* With this release, the minimum Windows version required for running LLVM is
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Windows 7. Earlier versions, including Windows Vista and XP are no longer
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supported.
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* With this release, the autoconf build system is deprecated. It will be removed
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in the 3.9 release. Please migrate to using CMake. For more information see:
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`Building LLVM with CMake <CMake.html>`_
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* The C API function LLVMLinkModules is deprecated. It will be removed in the
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3.9 release. Please migrate to LLVMLinkModules2. Unlike the old function the
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new one
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* Doesn't take an unused parameter.
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* Destroys the source instead of only damaging it.
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* Does not record a message. Use the diagnostic handler instead.
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* The C API functions LLVMParseBitcode, LLVMParseBitcodeInContext,
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LLVMGetBitcodeModuleInContext and LLVMGetBitcodeModule have been deprecated.
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They will be removed in 3.9. Please migrate to the versions with a 2 suffix.
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Unlike the old ones the new ones do not record a diagnostic message. Use
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the diagnostic handler instead.
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* The deprecated C APIs LLVMGetBitcodeModuleProviderInContext and
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LLVMGetBitcodeModuleProvider have been removed.
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* The deprecated C APIs LLVMCreateExecutionEngine, LLVMCreateInterpreter,
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LLVMCreateJITCompiler, LLVMAddModuleProvider and LLVMRemoveModuleProvider
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have been removed.
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* With this release, the C API headers have been reorganized to improve build
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time. Type specific declarations have been moved to Type.h, and error
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handling routines have been moved to ErrorHandling.h. Both are included in
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Core.h so nothing should change for projects directly including the headers,
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but transitive dependencies may be affected.
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.. NOTE
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For small 1-3 sentence descriptions, just add an entry at the end of
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this list. If your description won't fit comfortably in one bullet
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point (e.g. maybe you would like to give an example of the
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functionality, or simply have a lot to talk about), see the `NOTE` below
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for adding a new subsection.
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* ... next change ...
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.. NOTE
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If you would like to document a larger change, then you can add a
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subsection about it right here. You can copy the following boilerplate
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and un-indent it (the indentation causes it to be inside this comment).
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Special New Feature
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-------------------
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Makes programs 10x faster by doing Special New Thing.
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Changes to the ARM Backend
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--------------------------
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During this release ...
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Changes to the MIPS Target
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--------------------------
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During this release ...
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Changes to the PowerPC Target
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-----------------------------
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During this release ...
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Changes to the X86 Target
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-----------------------------
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During this release ...
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* TLS is enabled for Cygwin as emutls.
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Changes to the OCaml bindings
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-----------------------------
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During this release ...
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* The ocaml function link_modules has been replaced with link_modules' which
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uses LLVMLinkModules2.
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External Open Source Projects Using LLVM 3.8
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============================================
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An exciting aspect of LLVM is that it is used as an enabling technology for
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a lot of other language and tools projects. This section lists some of the
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projects that have already been updated to work with LLVM 3.8.
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* A project
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Additional Information
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======================
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A wide variety of additional information is available on the `LLVM web page
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<http://llvm.org/>`_, in particular in the `documentation
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<http://llvm.org/docs/>`_ section. The web page also contains versions of the
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API documentation which is up-to-date with the Subversion version of the source
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code. You can access versions of these documents specific to this release by
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going into the ``llvm/docs/`` directory in the LLVM tree.
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If you have any questions or comments about LLVM, please feel free to contact
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us via the `mailing lists <http://llvm.org/docs/#maillist>`_.
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