Trunk release notes now refer to 4.0.0

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275842 91177308-0d34-0410-b5e6-96231b3b80d8

docs/ReleaseNotes.rst

@@ -1,12 +1,12 @@
-======================
-LLVM 3.9 Release Notes
-======================
+========================
+LLVM 4.0.0 Release Notes
+========================
 
 .. contents::
     :local:
 
 .. warning::
-   These are in-progress notes for the upcoming LLVM 3.9 release.  You may
+   These are in-progress notes for the upcoming LLVM 4.0.0 release.  You may
    prefer the `LLVM 3.8 Release Notes <http://llvm.org/releases/3.8.0/docs
    /ReleaseNotes.html>`_.
 
@@ -15,7 +15,7 @@ Introduction
 ============
 
 This document contains the release notes for the LLVM Compiler Infrastructure,
-release 3.9.  Here we describe the status of LLVM, including major improvements
+release 4.0.0.  Here we describe the status of LLVM, including major improvements
 from the previous release, improvements in various subprojects of LLVM, and
 some of the current users of the code.  All LLVM releases may be downloaded
 from the `LLVM releases web site <http://llvm.org/releases/>`_.
@@ -33,46 +33,6 @@ page <http://llvm.org/releases/>`_.
 
 Non-comprehensive list of changes in this release
 =================================================
-* The LLVMContext gains a new runtime check (see
-  LLVMContext::discardValueNames()) that can be set to discard Value names
-  (other than GlobalValue). This is intended to be used in release builds by
-  clients that are interested in saving CPU/memory as much as possible.
-
-* There is no longer a "global context" available in LLVM, except for the C API.
-
-* .. note about autoconf build having been removed.
-
-* .. note about C API functions LLVMParseBitcode,
-   LLVMParseBitcodeInContext, LLVMGetBitcodeModuleInContext and
-   LLVMGetBitcodeModule having been removed. LLVMGetTargetMachineData has been
-   removed (use LLVMGetDataLayout instead).
-
-* The C API function LLVMLinkModules has been removed.
-
-* The C API function LLVMAddTargetData has been removed.
-
-* The C API function LLVMGetDataLayout is deprecated
-  in favor of LLVMGetDataLayoutStr.
-
-* The C API enum LLVMAttribute and associated API is deprecated in favor of
-  the new LLVMAttributeRef API. The deprecated functions are
-  LLVMAddFunctionAttr, LLVMAddTargetDependentFunctionAttr,
-  LLVMRemoveFunctionAttr, LLVMGetFunctionAttr, LLVMAddAttribute,
-  LLVMRemoveAttribute, LLVMGetAttribute, LLVMAddInstrAttribute,
-  LLVMRemoveInstrAttribute and LLVMSetInstrParamAlignment.
-
-* ``TargetFrameLowering::eliminateCallFramePseudoInstr`` now returns an
-  iterator to the next instruction instead of ``void``. Targets that previously
-  did ``MBB.erase(I); return;`` now probably want ``return MBB.erase(I);``.
-
-* ``SelectionDAGISel::Select`` now returns ``void``. Out of tree targets will
-  need to be updated to replace the argument node and remove any dead nodes in
-  cases where they currently return an ``SDNode *`` from this interface.
-
-* Introduction of ThinLTO: [FIXME: needs to be documented more extensively in
-  /docs/ ; ping Mehdi/Teresa before the release if not done]
-
-* Raised the minimum required CMake version to 3.4.3.
 
 .. NOTE
    For small 1-3 sentence descriptions, just add an entry at the end of
@@ -96,20 +56,6 @@ Non-comprehensive list of changes in this release
 Changes to the LLVM IR
 ----------------------
 
-* New intrinsics ``llvm.masked.load``, ``llvm.masked.store``,
-  ``llvm.masked.gather`` and ``llvm.masked.scatter`` were introduced to the
-  LLVM IR to allow selective memory access for vector data types.
-
-Changes to LLVM's IPO model
----------------------------
-
-LLVM no longer does inter-procedural analysis and optimization (except
-inlining) on functions with comdat linkage.  Doing IPO over such
-functions is unsound because the implementation the linker chooses at
-link-time may be differently optimized than the one what was visible
-during optimization, and may have arbitrarily different observable
-behavior.  See `PR26774 <http://llvm.org/PR26774>`_ for more details.
-
 Changes to the ARM Backend
 --------------------------
 
@@ -125,47 +71,28 @@ Changes to the MIPS Target
 Changes to the PowerPC Target
 -----------------------------
 
- Moved some optimizations from O3 to O2 (D18562)
-
-* Enable sibling call optimization on ppc64 ELFv1/ELFv2 abi
+ During this release ...
 
 Changes to the X86 Target
 -------------------------
 
-* LLVM now supports the Intel CPU codenamed Skylake Server with AVX-512
-  extensions using ``-march=skylake-avx512``. The switch enables the
-  ISA extensions AVX-512{F, CD, VL, BW, DQ}.
-
-* LLVM now supports the Intel CPU codenamed Knights Landing with AVX-512
-  extensions using ``-march=knl``. The switch enables the ISA extensions
-  AVX-512{F, CD, ER, PF}.
+ During this release ...
 
 Changes to the AMDGPU Target
 -----------------------------
 
- * Mesa 11.0.x is no longer supported
-
+ During this release ...
 
 Changes to the OCaml bindings
 -----------------------------
 
  During this release ...
 
-Support for attribute 'notail' has been added
----------------------------------------------
 
-This marker prevents optimization passes from adding 'tail' or
-'musttail' markers to a call. It is used to prevent tail call
-optimization from being performed on the call.
+External Open Source Projects Using LLVM 4.0.0
+==============================================
 
-External Open Source Projects Using LLVM 3.9
-============================================
-
-An exciting aspect of LLVM is that it is used as an enabling technology for
-a lot of other language and tools projects. This section lists some of the
-projects that have already been updated to work with LLVM 3.9.
-
-* A project
+* A project...
 
 
 Additional Information
@@ -180,4 +107,3 @@ going into the ``llvm/docs/`` directory in the LLVM tree.
 
 If you have any questions or comments about LLVM, please feel free to contact
 us via the `mailing lists <http://llvm.org/docs/#maillist>`_.
-