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
-------------------------
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