[llvm-branch-commits] [llvm-branch] r366693 - [SystemZ] Add release notes on the LLVM 9 branch

[Ulrich Weigand via llvm-branch-commits]

Author: uweigand
Date: Mon Jul 22 07:39:02 2019
New Revision: 366693

URL: http://llvm.org/viewvc/llvm-project?rev=366693&view=rev
Log:
[SystemZ] Add release notes on the LLVM 9 branch

Modified:
    llvm/branches/release_90/docs/ReleaseNotes.rst

Modified: llvm/branches/release_90/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_90/docs/ReleaseNotes.rst?rev=366693&r1=366692&r2=366693&view=diff
==============================================================================
--- llvm/branches/release_90/docs/ReleaseNotes.rst (original)
+++ llvm/branches/release_90/docs/ReleaseNotes.rst Mon Jul 22 07:39:02 2019
@@ -103,6 +103,27 @@ Changes to the PowerPC Target
 
  During this release ...
 
+Changes to the SystemZ Target
+-----------------------------
+
+* Support for the arch13 architecture has been added.  When using the
+  ``-march=arch13`` option, the compiler will generate code making use of
+  new instructions introduced with the vector enhancement facility 2
+  and the miscellaneous instruction extension facility 2.
+  The ``-mtune=arch13`` option enables arch13 specific instruction
+  scheduling and tuning without making use of new instructions.
+
+* Builtins for the new vector instructions have been added and can be
+  enabled using the ``-mzvector`` option.  Support for these builtins
+  is indicated by the compiler predefining the ``__VEC__`` macro to
+  the value ``10303``.
+
+* The compiler now supports and automatically generates alignment hints
+  on vector load and store instructions.
+
+* Various code-gen improvements, in particular related to improved
+  instruction selection and register allocation.
+
 Changes to the X86 Target
 -------------------------