[wasm] Int64Lowering of Int64Mul on ia32 and arm.

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 34a3ffbd7559fb863a47847f4e75806a84f3f2c3..7f6ef9a297c1b3f21e6563ddbf10170c61d89572 100644
--- a/src/compiler/int64-lowering.h
+++ b/src/compiler/int64-lowering.h
@@ -37,10 +37,13 @@ class Int64Lowering {
   CommonOperatorBuilder* common() const { return common_; }
   Signature<MachineRepresentation>* signature() const { return signature_; }
 
+  void PrepareReplacements(Node* node);
+  void PushNode(Node* node);
   void LowerNode(Node* node);
   bool DefaultLowering(Node* node);
   void LowerComparison(Node* node, const Operator* signed_op,
                        const Operator* unsigned_op);
+  void PrepareProjectionReplacements(Node* node);
 
   void ReplaceNode(Node* old, Node* new_low, Node* new_high);
   bool HasReplacementLow(Node* node);