diff --git a/lib/Target/README.txt b/lib/Target/README.txt
index 4ef42d528a9..c369c8f2434 100644
--- a/lib/Target/README.txt
+++ b/lib/Target/README.txt
@@ -102,3 +102,7 @@ into:
 This would be a win on ppc32, but not x86 or ppc64.
 
 //===---------------------------------------------------------------------===//
+
+Shrink: (setlt (loadi32 P), 0) -> (setlt (loadi8 Phi), 0)
+
+//===---------------------------------------------------------------------===//