[wasm] I added comparison operators to the Int64Lowering.

src/compiler/int64-lowering.h

Index: src/compiler/int64-lowering.h
diff --git a/src/compiler/int64-lowering.h b/src/compiler/int64-lowering.h
index 79a95dc195a0d4abd302838d752c11022c4d40ac..855538d16fe879515733ea5b899a19b0c8c41ef2 100644
--- a/src/compiler/int64-lowering.h
+++ b/src/compiler/int64-lowering.h
@@ -39,6 +39,8 @@ class Int64Lowering {
 
   void LowerNode(Node* node);
   bool DefaultLowering(Node* node);
+  void LowerComparison(Node* node, const Operator* signed_op,
+                       const Operator* unsigned_op);
 
   void ReplaceNode(Node* old, Node* new_low, Node* new_high);
   bool HasReplacementLow(Node* node);