Update

svn path=/trunk/mono/; revision=23878

1 files changed, 25 insertions, 1 deletions

diff --git a/docs/ir-desc b/docs/ir-desc
index 25ad5c11564..617e105b77a 100644
--- a/docs/ir-desc
+++ b/docs/ir-desc
@@ -27,4 +27,28 @@ Operation: OP_CALL_HANDLER.
 
 	This instruction must call the target basic block.
 	
-	
\ No newline at end of file
+Operation: OP_CISINST
+
+	Implements the CEE_MONO_CISINST opcode that is decoded from
+	the CIL stream.
+
+	This opcode takes as input an object reference and a class,
+	and leaves on the assigned register:
+
+		0. if the object is an instance of the class,
+		1. if the object is not instance of the class,
+		2. if the object is a proxy whose type cannot be determined.
+
+Operation: OP_CCASTCLASS
+
+	Implements the CEE_MONO_CCASTCLASS opcode that is decoded from
+	the CIL stream.
+
+	This opcode takes as input an object reference and a class,
+	and leaves on the assigned register:
+
+		0. if the object is an instance of the class,
+		1. if the object is a proxy whose type cannot be determined
+
+		throws an InvalidCastException exception otherwise.
+