X87: new classes: change semantics of super(...) call and add new.target to construct stub.

src/x87/code-stubs-x87.cc

 // Copyright 2012 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.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X87
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 1818 matching lines @@
           isolate()->factory()->allocation_site_map();
       __ cmp(FieldOperand(ebx, 0), Immediate(allocation_site_map));
       __ j(equal, &feedback_register_initialized);
       __ mov(ebx, isolate()->factory()->undefined_value());
       __ bind(&feedback_register_initialized);
     }
 
     __ AssertUndefinedOrAllocationSite(ebx);
   }
 
+  // Pass original constructor to construct stub.
+  __ mov(edx, edi);
+
   // Jump to the function-specific construct stub.
   Register jmp_reg = ecx;
   __ mov(jmp_reg, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset));
   __ mov(jmp_reg, FieldOperand(jmp_reg,
                                SharedFunctionInfo::kConstructStubOffset));
   __ lea(jmp_reg, FieldOperand(jmp_reg, Code::kHeaderSize));
   __ jmp(jmp_reg);
 
   // edi: called object
   // eax: number of arguments
@@ skipping 2865 matching lines @@
                            ApiParameterOperand(2), kStackSpace, nullptr,
                            Operand(ebp, 7 * kPointerSize), NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X87