Rename keyword "modify" -> "implicit".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42282 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/TargetSelectionDAG.td b/lib/Target/TargetSelectionDAG.td
index 194f55f..15c3169 100644
--- a/lib/Target/TargetSelectionDAG.td
+++ b/lib/Target/TargetSelectionDAG.td
@@ -197,7 +197,7 @@
 }
 
 def set;
-def modify;
+def implicit;
 def parallel;
 def node;
 def srcvalue;