PPC/s390: [es2015] Simplify contract between parser and stub for derived constructors.

src/builtins/ppc/builtins-ppc.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 570 matching lines @@
       __ LoadP(r4, MemOperand(sp));
     }
 
     // Leave construct frame.
   }
 
   // ES6 9.2.2. Step 13+
   // Check that the result is not a Smi, indicating that the constructor result
   // from a derived class is neither undefined nor an Object.
   if (check_derived_construct) {
-    Label dont_throw;
-    __ JumpIfNotSmi(r3, &dont_throw);
+    Label do_throw, dont_throw;
+    __ JumpIfSmi(r3, &do_throw);
+    STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE);
+    __ CompareObjectType(r3, r6, r6, FIRST_JS_RECEIVER_TYPE);
+    __ bge(&dont_throw);
+    __ bind(&do_throw);
     {
       FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
       __ CallRuntime(Runtime::kThrowDerivedConstructorReturnedNonObject);
     }
     __ bind(&dont_throw);
   }
 
   __ SmiToPtrArrayOffset(r4, r4);
   __ add(sp, sp, r4);
   __ addi(sp, sp, Operand(kPointerSize));
@@ skipping 2470 matching lines @@
   }
   // Now jump to the instructions of the returned code object.
   __ Jump(r11);
 }
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC