[DAGCombiner] Add some comments to some true/false arguments to make it obvious what they are. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335095 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index b3f5531..3d83526 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -6725,9 +6725,9 @@
   // in another basic block or it could require searching a complicated
   // expression.
   if (CondVT.isInteger() &&
-      TLI.getBooleanContents(false, true) ==
+      TLI.getBooleanContents(/*isVec*/false, /*isFloat*/true) ==
           TargetLowering::ZeroOrOneBooleanContent &&
-      TLI.getBooleanContents(false, false) ==
+      TLI.getBooleanContents(/*isVec*/false, /*isFloat*/false) ==
           TargetLowering::ZeroOrOneBooleanContent &&
       C1->isNullValue() && C2->isOne()) {
     SDValue NotCond =