Fill 17.x/ReleaseNotes with my works

llvm/docs/ReleaseNotes.rst

@@ -95,15 +95,46 @@ Changes to LLVM infrastructure
   `RFC  <https://discourse.llvm.org/t/rfc-ffat-lto-objects-support/63977>`_
   for more details.
 
+* ``ValueTypes.td`` is made richer to represent attributes for
+  ``MVT``.
+
+* ``IntrinsicEmitter`` no longer depends on ``MachineValueTypes.h``.
+
+* ``Intrinsics.td`` is able to emit definitions of ``TypeSig``.
+
+* ``MachineValueType.h`` is moved from ``llvm/Support`` to ``llvm/CodeGen``.
+  It uses values defined in ``ValueTypes.td``.
+
 Changes to building LLVM
 ------------------------
 
+* ``llvm-min-tblgen`` is introduced as a minimal subset of
+  ``llvm-tblgen``, whose purpose is to generate fragments of public
+  LLVM headers during LLVM builds. Building ``llvm-tblgen`` now
+  depends on ``GenVT.inc``, which is produced by
+  ``llvm-min-tblgen``. ``llvm-min-tblgen`` is an internal LLVM tool
+  which is not distributed. Users that rely on prebuilt tablegen tools
+  should use ``llvm-tblgen`` and ignore ``llvm-min-tblgen``.
+
 Changes to TableGen
 -------------------
 
 * Named arguments are supported. Arguments can be specified in the form of
   ``name=value``.
 
+* Each tablegen backend can declare itself as self-contained with
+  ``llvm::TableGen::Emitter`` as the registry. Users don't need to
+  append entries and options to ``TableGen.cpp``. For now, it is
+  applied only to ``llvm-tblgen``.
+
+* The new bang operator ``!range(m, n)`` is introduced.
+
+* A list subscript ``list_var[i]`` accepts not only immutable values
+  but also expressions.
+
+* A list slice ``list_foo[list_bar]`` accepts ``list<int>``
+  expressions.
+
 Changes to Optimizations
 ----------------------------------------