Desugar %DefaultConstructorCallSuper partially in parser.

src/full-codegen/mips64/full-codegen-mips64.cc

Index: src/full-codegen/mips64/full-codegen-mips64.cc
diff --git a/src/full-codegen/mips64/full-codegen-mips64.cc b/src/full-codegen/mips64/full-codegen-mips64.cc
index 8e0cc0d48f31d9710912eb4f877fe0eb097360a4..311f293c17525b860a508aad51bf792f67867101 100644
--- a/src/full-codegen/mips64/full-codegen-mips64.cc
+++ b/src/full-codegen/mips64/full-codegen-mips64.cc
@@ -4138,13 +4138,9 @@ void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 2);
 
-  // new.target
+  // Evaluate new.target and super constructor.
   VisitForStackValue(args->at(0));
-
-  // .this_function
   VisitForStackValue(args->at(1));
-  __ CallRuntime(Runtime::kGetPrototype, 1);
-  __ Push(result_register());
 
   // Load original constructor into a4.
   __ ld(a4, MemOperand(sp, 1 * kPointerSize));