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

src/x87/code-stubs-x87.cc

Index: src/x87/code-stubs-x87.cc
diff --git a/src/x87/code-stubs-x87.cc b/src/x87/code-stubs-x87.cc
index c24883fd78466f22314ebec29b2a0f82f19c395e..077abbb1e6206edd49853497c25a39a290554b09 100644
--- a/src/x87/code-stubs-x87.cc
+++ b/src/x87/code-stubs-x87.cc
@@ -4701,27 +4701,26 @@ void ArrayConstructorStub::Generate(MacroAssembler* masm) {
 
   // 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()));
 }