[runtime] Introduce a proper %NewArray runtime entry.

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index b149df0336cabc2e74804be218e7ba5a33ed6816..d6ca5aa61ddab4b6089d8031e034f8273a9cc4b4 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -4821,25 +4821,23 @@ void ArrayConstructorStub::Generate(MacroAssembler* masm) {
   GenerateDispatchToArrayStub(masm, DISABLE_ALLOCATION_SITES);
 
   __ bind(&subclassing);
-  __ push(r1);
-  __ push(r3);
-
-  // Adjust argc.
   switch (argument_count()) {
     case ANY:
     case MORE_THAN_ONE:
-      __ add(r0, r0, Operand(2));
+      __ str(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2));
+      __ add(r0, r0, Operand(3));
       break;
     case NONE:
-      __ mov(r0, Operand(2));
+      __ str(r1, MemOperand(sp, 0 * kPointerSize));
+      __ mov(r0, Operand(3));
       break;
     case ONE:
-      __ mov(r0, Operand(3));
+      __ str(r1, MemOperand(sp, 1 * kPointerSize));
+      __ mov(r0, Operand(4));
       break;
   }
-
-  __ JumpToExternalReference(
-      ExternalReference(Runtime::kArrayConstructorWithSubclassing, isolate()));
+  __ Push(r3, r2);
+  __ JumpToExternalReference(ExternalReference(Runtime::kNewArray, isolate()));
 }