Reland "Merge cellspace into old pointer space"

src/arm/code-stubs-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 "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 1306 matching lines @@
     // Patch the (relocated) inlined map check.
 
     // The map_load_offset was stored in r5
     //   (See LCodeGen::DoDeferredLInstanceOfKnownGlobal).
     const Register map_load_offset = r5;
     __ sub(r9, lr, map_load_offset);
     // Get the map location in r5 and patch it.
     __ GetRelocatedValueLocation(r9, map_load_offset, scratch);
     __ ldr(map_load_offset, MemOperand(map_load_offset));
     __ str(map, FieldMemOperand(map_load_offset, Cell::kValueOffset));
+
+    __ mov(r8, map);
+    // |map_load_offset| points at the beginning of the cell. Calculate the
+    // field containing the map.
+    __ add(function, map_load_offset, Operand(Cell::kValueOffset - 1));
+    __ RecordWriteField(map_load_offset, Cell::kValueOffset, r8, function,
+                        kLRHasNotBeenSaved, kDontSaveFPRegs,
+                        OMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
   }
 
   // Register mapping: r3 is object map and r4 is function prototype.
   // Get prototype of object into r2.
   __ ldr(scratch, FieldMemOperand(map, Map::kPrototypeOffset));
 
   // We don't need map any more. Use it as a scratch register.
   Register scratch2 = map;
   map = no_reg;
 
@@ skipping 3938 matching lines @@
                            kStackUnwindSpace, NULL,
                            MemOperand(fp, 6 * kPointerSize), NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM