Throw a TypeError when calling "next" method of a newly created generator with a value

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index 56c6dee8478df6cd7ad5c20fa564ad247c2afaa8..f8af6611d86998f9f670f3602f77743d4516c577 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -2035,6 +2035,19 @@ void FullCodeGenerator::VisitYield(Yield* expr) {
       EmitReturnSequence();
 
       __ bind(&resume);
+      Label init_value_check_done;
+      if (expr->yield_kind() == Yield::INITIAL) {
+        // When value is provided and it is not undefined, throw error.
+        __ LoadRoot(a1, Heap::kUndefinedValueRootIndex);
+        __ Branch(&init_value_check_done, eq, result_register(), Operand(a1));
+        // This error should be raised from the Generator.prototype.next side.
+        // So in this case, we return the hole value as a marker. The caller
+        // checks the result value and if it is the hole value, the caller
+        // throws error.
+        __ Push(isolate()->factory()->the_hole_value());
+        __ jmp(&suspend);
+      }
+      __ bind(&init_value_check_done);
       context()->Plug(result_register());
       break;
     }
@@ -2257,7 +2270,17 @@ void FullCodeGenerator::EmitGeneratorResume(Expression *generator,
   __ push(a1);
   __ CallRuntime(Runtime::kThrowGeneratorStateError, 1);
 
+  // Throw error if we attempt to pass a value to an unborn generator.
+  Label wrong_start;
+  __ bind(&wrong_start);
+  __ CallRuntime(Runtime::kThrowGeneratorStartError, 0);
+
   __ bind(&done);
+  // When a value is passed to an unborn generator, the result becomes the hole
+  // value. And we need to throw GeneratorStartError in the caller side.
+  // (Generator.prototype.next)
+  __ LoadRoot(a2, Heap::kTheHoleValueRootIndex);
+  __ Branch(&wrong_start, eq, result_register(), Operand(a2));
   context()->Plug(result_register());
 }