[ReleaseNotes] Add note for enabling GlobalISel for AArch64 -O0

Patch by Amara Emerson.

Differential Revision: https://reviews.llvm.org/D42861

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_60@324211 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index c28a3829bfee191f8d3e3830a2585ba7d8ab26c4..cf85af7ba1b80a1473b27e4950077db7fc55700e 100644 (file)
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -71,6 +71,13 @@ Non-comprehensive list of changes in this release
 Changes to the LLVM IR
 ----------------------
 
+Changes to the AArch64 Target
+-----------------------------
+
+During this release:
+
+ * Enabled the new GlobalISel instruction selection framework by default at ``-O0``.
+
 Changes to the ARM Target
 -------------------------