1 files changed, 2 insertions, 1 deletions
diff --git a/utils/TableGen/CodeGenInstruction.h b/utils/TableGen/CodeGenInstruction.h
index aae2cac86a..8e7051bcda 100644
--- a/utils/TableGen/CodeGenInstruction.h
+++ b/utils/TableGen/CodeGenInstruction.h
@@ -105,7 +105,8 @@ namespace llvm {
           MINumOperands(MINO), MIOperandInfo(MIOI) {}
     };
 
-    /// NumDefs - Number of def operands declared.
+    /// NumDefs - Number of def operands declared, this is the number of
+    /// elements in the instruction's (outs) list.
     ///
     unsigned NumDefs;