From: Krzysztof Parzyszek <kparzysz@codeaurora.org>
Date: Tue, 14 Aug 2018 19:40:56 +0000 (+0000)
Subject: [ReleaseNotes] Add release notes for Hexagon
X-Git-Tag: android-x86-8.1-r1~67
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;ds=sidebyside;h=12eb6bc73a21b9a91b6b5670b13aabbb17ab8281;p=android-x86%2Fexternal-llvm.git

[ReleaseNotes] Add release notes for Hexagon


git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_70@339717 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 040d85981bd..b0588dc28c3 100644
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -172,6 +172,18 @@ Changes to the ARM Target
   deduce the instruction size, without having to specify it with
   e.g. ``.inst.w`` as before.
 
+Changes to the Hexagon Target
+-----------------------------
+
+* Hexagon now supports auto-vectorization for HVX. It is disabled by default
+  and can be turned on with ``-fvectorize``. For auto-vectorization to take
+  effect, code genration for HVX needs to be enabled with ``-mhvx``.
+  The complete set of options should include ``-fvectorize``, ``-mhvx``,
+  and ``-mhvx-length={64b|128b}``.
+
+* The support for Hexagon ISA V4 is deprecated and will be removed in the
+  next release.
+
 Changes to the MIPS Target
 --------------------------