Update Release notes regarding TTI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174586 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 75dcf19..beb2014 100644
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -67,6 +67,13 @@
We've also improved the X86 and ARM cost model.
+ TargetTransformInfo
+ -------------------
+ TargetTransformInto (TTI) is a new interface that can be used by IR-level passes
+ to obtain target-specific information, such as the costs of instructions. Only "Lowering"
+ passes such as LSR and the vectorizer are allowed to use the TTI infrastructure.
+
+
* ... next change ...
.. NOTE