X87: [runtime] Introduce a proper %NewArray runtime entry.

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.
 
 #if V8_TARGET_ARCH_X87
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 4683 matching lines @@
   __ SmiUntag(edx);
   STATIC_ASSERT(AllocationSite::ElementsKindBits::kShift == 0);
   __ and_(edx, Immediate(AllocationSite::ElementsKindBits::kMask));
   GenerateDispatchToArrayStub(masm, DONT_OVERRIDE);
 
   __ bind(&no_info);
   GenerateDispatchToArrayStub(masm, DISABLE_ALLOCATION_SITES);
 
   // Subclassing.
   __ bind(&subclassing);
-  __ pop(ecx);  // return address.
-  __ push(edi);
-  __ push(edx);
-
-  // Adjust argc.
   switch (argument_count()) {
     case ANY:
     case MORE_THAN_ONE:
-      __ add(eax, Immediate(2));
+      __ mov(Operand(esp, eax, times_pointer_size, kPointerSize), edi);
+      __ add(eax, Immediate(3));
       break;
     case NONE:
-      __ mov(eax, Immediate(2));
+      __ mov(Operand(esp, 1 * kPointerSize), edi);
+      __ mov(eax, Immediate(3));
       break;
     case ONE:
-      __ mov(eax, Immediate(3));
+      __ mov(Operand(esp, 2 * kPointerSize), edi);
+      __ mov(eax, Immediate(4));
       break;
   }
-
-  __ push(ecx);
-  __ JumpToExternalReference(
-      ExternalReference(Runtime::kArrayConstructorWithSubclassing, isolate()));
+  __ PopReturnAddressTo(ecx);
+  __ Push(edx);
+  __ Push(ebx);
+  __ PushReturnAddressFrom(ecx);
+  __ JumpToExternalReference(ExternalReference(Runtime::kNewArray, isolate()));
 }
 
 
 void InternalArrayConstructorStub::GenerateCase(
     MacroAssembler* masm, ElementsKind kind) {
   Label not_zero_case, not_one_case;
   Label normal_sequence;
 
   __ test(eax, eax);
   __ j(not_zero, &not_zero_case);
@@ skipping 614 matching lines @@
                            Operand(ebp, 7 * kPointerSize), NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87