[builtins] Merge two adjacent if-statements in JSConstructStub

src/builtins/x64/builtins-x64.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.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 133 matching lines @@
       __ Pop(rdi);
 
       // ----------- S t a t e -------------
       //  -- rdi: constructor function
       //  -- rbx: newly allocated object
       //  -- rdx: new target
       // -----------------------------------
 
       // Retrieve smi-tagged arguments count from the stack.
       __ SmiToInteger32(rax, Operand(rsp, 0 * kPointerSize));
-    }
 
-    if (create_implicit_receiver) {
       // Push the allocated receiver to the stack. We need two copies
       // because we may have to return the original one and the calling
       // conventions dictate that the called function pops the receiver.
       __ Push(rbx);
       __ Push(rbx);
     } else {
       __ PushRoot(Heap::kTheHoleValueRootIndex);
     }
 
     // Set up pointer to last argument.
@@ skipping 2881 matching lines @@
 void Builtins::Generate_InterpreterOnStackReplacement(MacroAssembler* masm) {
   Generate_OnStackReplacementHelper(masm, true);
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64