Add note on support for arbitrary precision integers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65445 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index d45ffca..d89cab2 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -201,7 +201,15 @@
 <p>LLVM 2.5 includes several major new capabilities:</p>
 
 <ul>
-<li><p> Legalize Types</p></li>
+<li><p>The code generator now supports arbitrary precision integers.
+Types like <tt>i33</tt> have long been valid in the LLVM IR, but previously
+could only be used with the interpreter.
+Now IR using such types can be compiled to native code on all targets.
+All operations are supported if the integer is not bigger than twice the
+target machine word size.
+Simple operations like loads, stores and shifts by a constant amount are
+supported for integers of any size.
+</p></li>
 
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