[runtime] Fix ES6 9.2.1 [[Call]] when encountering a classConstructor.

src/arm64/builtins-arm64.cc

Index: src/arm64/builtins-arm64.cc
diff --git a/src/arm64/builtins-arm64.cc b/src/arm64/builtins-arm64.cc
index b98ecea4ed480ba0b4f2a16fdd75fcbcdb46022a..3041af60cda4954c2d3cb32a0c4ca5adb8ba86a9 100644
--- a/src/arm64/builtins-arm64.cc
+++ b/src/arm64/builtins-arm64.cc
@@ -1544,19 +1544,34 @@ void Builtins::Generate_CallFunction(MacroAssembler* masm) {
   //  -- x0 : the number of arguments (not including the receiver)
   //  -- x1 : the function to call (checked to be a JSFunction)
   // -----------------------------------
+  // See ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList)
 
   Label convert, convert_global_proxy, convert_to_object, done_convert;
   __ AssertFunction(x1);
-  // TODO(bmeurer): Throw a TypeError if function's [[FunctionKind]] internal
-  // slot is "classConstructor".
+
+  __ Ldr(x2, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
+  {
+    Label non_class_constructor;
+    // Check whether the current function is a classConstructor
+    __ Ldr(w3, FieldMemOperand(x2, SharedFunctionInfo::kCompilerHintsOffset));
+    __ TestAndBranchIfAllClear(
+        w3, (1 << SharedFunctionInfo::kIsDefaultConstructor) |
+                (1 << SharedFunctionInfo::kIsSubclassConstructor) |
+                (1 << SharedFunctionInfo::kIsBaseConstructor),
+        &non_class_constructor);
+    // Step: 2, If we call a classConstructor Function throw a TypeError.
+    {
+      FrameScope frame(masm, StackFrame::INTERNAL);
+      __ CallRuntime(Runtime::kThrowConstructorNonCallableError, 0);
+    }
+    __ bind(&non_class_constructor);
+  }
+
   // Enter the context of the function; ToObject has to run in the function
   // context, and we also need to take the global proxy from the function
   // context in case of conversion.
-  // See ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList)
   __ Ldr(cp, FieldMemOperand(x1, JSFunction::kContextOffset));
-  __ Ldr(x2, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset));
   // We need to convert the receiver for non-native sloppy mode functions.
-  __ Ldr(w3, FieldMemOperand(x2, SharedFunctionInfo::kCompilerHintsOffset));
   __ TestAndBranchIfAnySet(w3,
                            (1 << SharedFunctionInfo::kNative) |
                                (1 << SharedFunctionInfo::kStrictModeFunction),