[parser] Tweak ParseMemberWithNewPrefix for better inlining

Change-Id: I38e7ea204c84dfef22e1f87ac5923d93322b2620
Reviewed-on: https://chromium-review.googlesource.com/1238722Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56157}

src/parsing/parser-base.h

@@ -1131,7 +1131,10 @@ class ParserBase {
   ExpressionT ParseUnaryExpression(bool* ok);
   V8_INLINE ExpressionT ParsePostfixExpression(bool* ok);
   V8_INLINE ExpressionT ParseLeftHandSideExpression(bool* ok);
-  ExpressionT ParseMemberWithNewPrefixesExpression(bool* is_async, bool* ok);
+  ExpressionT ParseMemberWithPresentNewPrefixesExpression(bool* is_async,
+                                                          bool* ok);
+  V8_INLINE ExpressionT ParseMemberWithNewPrefixesExpression(bool* is_async,
+                                                             bool* ok);
   V8_INLINE ExpressionT ParseMemberExpression(bool* is_async, bool* ok);
   V8_INLINE ExpressionT ParseMemberExpressionContinuation(
       ExpressionT expression, bool* is_async, bool* ok);
@@ -3427,7 +3430,7 @@ ParserBase<Impl>::ParseLeftHandSideExpression(bool* ok) {
 
 template <typename Impl>
 typename ParserBase<Impl>::ExpressionT
-ParserBase<Impl>::ParseMemberWithNewPrefixesExpression(bool* is_async,
+ParserBase<Impl>::ParseMemberWithPresentNewPrefixesExpression(bool* is_async,
                                                               bool* ok) {
   // NewExpression ::
   //   ('new')+ MemberExpression
@@ -3448,8 +3451,6 @@ ParserBase<Impl>::ParseMemberWithNewPrefixesExpression(bool* is_async,
   // new new foo means new (new foo)
   // new new foo() means new (new foo())
   // new new foo().bar().baz means (new (new foo()).bar()).baz
-
-  if (peek() == Token::NEW) {
   BindingPatternUnexpectedToken();
   ArrowFormalParametersUnexpectedToken();
   Consume(Token::NEW);
@@ -3488,9 +3489,15 @@ ParserBase<Impl>::ParseMemberWithNewPrefixesExpression(bool* is_async,
   }
   // NewExpression without arguments.
   return factory()->NewCallNew(result, impl()->NewExpressionList(0), new_pos);
-  }
-  // No 'new' or 'super' keyword.
-  return ParseMemberExpression(is_async, ok);
+}
+
+template <typename Impl>
+typename ParserBase<Impl>::ExpressionT
+ParserBase<Impl>::ParseMemberWithNewPrefixesExpression(bool* is_async,
+                                                       bool* ok) {
+  return peek() == Token::NEW
+             ? ParseMemberWithPresentNewPrefixesExpression(is_async, ok)
+             : ParseMemberExpression(is_async, ok);
 }
 
 template <typename Impl>