[llvm-branch-commits] [llvm-branch] r355916 - ReleaseNotes: SystemZ, by Ulrich Weigand.

Hans Wennborg via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Tue Mar 12 05:52:55 PDT 2019

Author: hans
Date: Tue Mar 12 05:52:54 2019
New Revision: 355916

URL: http://llvm.org/viewvc/llvm-project?rev=355916&view=rev
ReleaseNotes: SystemZ, by Ulrich Weigand.


Modified: llvm/branches/release_80/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/release_80/docs/ReleaseNotes.rst?rev=355916&r1=355915&r2=355916&view=diff
--- llvm/branches/release_80/docs/ReleaseNotes.rst (original)
+++ llvm/branches/release_80/docs/ReleaseNotes.rst Tue Mar 12 05:52:54 2019
@@ -173,6 +173,26 @@ Changes to the PowerPC Target
 * Enabled llvm-exegesis latency mode for PPC
+Changes to the SystemZ Target
+* A number of bugs related to C/C++ language vector extension support were
+  fixed: the ``-mzvector`` option now actually enables the ``__vector`` and
+  ``__bool`` keywords, the ``vec_step`` intrinsic now works, and the
+  ``vec_insert_and_zero`` and ``vec_orc`` intrinsics now generate correct code.
+* The ``__float128`` keyword, which had been accidentally enabled in some
+  earlier releases, is now no longer supported.  On SystemZ, the ``long double``
+  data type itself already uses the IEEE 128-bit floating-point format.
+* When the compiler inlines ``strcmp`` or ``memcmp``, the generated code no
+  longer returns ``INT_MIN`` as the negative result value under any
+  circumstances.
+* Various code-gen improvements, in particular related to improved
+  auto-vectorization, inlining, and instruction scheduling.
 Changes to the X86 Target

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