X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=docs%2Fir-desc;h=617e105b77a78660feaa2a1aa648533bda7b772a;hb=50beb484c091b7eb9fdd4cba436757c12f316b8d;hp=25ad5c11564defcb0e19d66e0b570c4ce2dcbfdf;hpb=e33afb5477aa590ac03a75632df8537ff6af502b;p=mono.git

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.
+