[async-functions] support await expressions in finally statements

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index 7bb601b752c0c2a16da56876295baf894d60a46b..2ee4a441e87a04cb21a70f5383b74b8e21e74a98 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -73,6 +73,9 @@ class V8_EXPORT_PRIVATE BytecodeArrayBuilder final
 
   Register Parameter(int parameter_index) const;
 
+  // Same as Parameter(0), but indicates intent
+  inline Register Receiver() const { return Parameter(0); }
+
   // Constant loads to accumulator.
   BytecodeArrayBuilder& LoadConstantPoolEntry(size_t entry);
   BytecodeArrayBuilder& LoadLiteral(v8::internal::Smi* value);
@@ -342,17 +345,25 @@ class V8_EXPORT_PRIVATE BytecodeArrayBuilder final
 
   void InitializeReturnPosition(FunctionLiteral* literal);
 
-  void SetStatementPosition(Statement* stmt) {
-    if (stmt->position() == kNoSourcePosition) return;
-    latest_source_info_.MakeStatementPosition(stmt->position());
+  inline void SetStatementPosition(Statement* stmt) {
+    SetStatementPosition(stmt->position());
   }
 
-  void SetExpressionPosition(Expression* expr) {
-    if (expr->position() == kNoSourcePosition) return;
+  void SetStatementPosition(int position) {
+    if (position == kNoSourcePosition) return;
+    latest_source_info_.MakeStatementPosition(position);
+  }
+
+  inline void SetExpressionPosition(Expression* expr) {
+    SetExpressionPosition(expr->position());
+  }
+
+  void SetExpressionPosition(int position) {
+    if (position == kNoSourcePosition) return;
     if (!latest_source_info_.is_statement()) {
       // Ensure the current expression position is overwritten with the
       // latest value.
-      latest_source_info_.MakeExpressionPosition(expr->position());
+      latest_source_info_.MakeExpressionPosition(position);
     }
   }