add note

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11876 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index 6d286cd4b10948b23a0584c637d461497f777f64..fc6f15b9ed9265514607e0872eab4b2a927b729f 100644 (file)
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -115,6 +115,8 @@ that support it.</li>
 <li>The X86 backend now generates <b>substantially</b> better native code, and is faster.</li>
 <li>The C backend has been turned moved from the "llvm-dis" tool to the "llc"
 tool.  You can activate it with "<tt>llc -march=c foo.bc -o foo.c</tt>".</li>
+<li>LLVM includes a new interprocedural optimization that marks global variables
+"constant" when they are provably never written to.</li>
 </ol>