Revert of [heap] Avoid the use of cells to point from code to new-space objects.

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index d1eb6137f0bcad578749e496a59ce56d60cd5e83..154e69be7fccc17eb9a144ebad540e87164a9a0d 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -275,6 +275,7 @@
   // Verify all Objects referred by code are NOT in new space.
   Object* obj = *handle;
   if (obj->IsHeapObject()) {
+    DCHECK(!HeapObject::cast(obj)->GetHeap()->InNewSpace(obj));
     imm32_ = reinterpret_cast<intptr_t>(handle.location());
     rmode_ = RelocInfo::EMBEDDED_OBJECT;
   } else {