[builtins] Migrate Number constructor similar to String constructor.

src/arm/macro-assembler-arm.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 <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/base/bits.h"
 #include "src/base/division-by-constant.h"
@@ skipping 2918 matching lines @@
                                                  Register scratch1,
                                                  Register scratch2,
                                                  Register heap_number_map,
                                                  Label* gc_required) {
   AllocateHeapNumber(result, scratch1, scratch2, heap_number_map, gc_required);
   sub(scratch1, result, Operand(kHeapObjectTag));
   vstr(value, scratch1, HeapNumber::kValueOffset);
 }
 
 
+void MacroAssembler::AllocateJSValue(Register result, Register constructor,
+                                     Register value, Register scratch1,
+                                     Register scratch2, Label* gc_required) {
+  DCHECK(!result.is(constructor));
+  DCHECK(!result.is(scratch1));
+  DCHECK(!result.is(scratch2));
+  DCHECK(!result.is(value));
+
+  // Allocate JSValue in new space.
+  Allocate(JSValue::kSize, result, scratch1, scratch2, gc_required, TAG_OBJECT);
+
+  // Initialize the JSValue.
+  LoadGlobalFunctionInitialMap(constructor, scratch1, scratch2);
+  str(scratch1, FieldMemOperand(result, HeapObject::kMapOffset));
+  LoadRoot(scratch1, Heap::kEmptyFixedArrayRootIndex);
+  str(scratch1, FieldMemOperand(result, JSObject::kPropertiesOffset));
+  str(scratch1, FieldMemOperand(result, JSObject::kElementsOffset));
+  str(value, FieldMemOperand(result, JSValue::kValueOffset));
+  STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize);
+}
+
+
 void MacroAssembler::CopyBytes(Register src,
                                Register dst,
                                Register length,
                                Register scratch) {
   Label align_loop_1, word_loop, byte_loop, byte_loop_1, done;
 
   // Align src before copying in word size chunks.
   cmp(length, Operand(kPointerSize));
   b(le, &byte_loop);
 
@@ skipping 646 matching lines @@
     }
   }
   if (mag.shift > 0) mov(result, Operand(result, ASR, mag.shift));
   add(result, result, Operand(dividend, LSR, 31));
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM