PPC/s390: Reland [heap] Avoid the use of cells to point from code to new-space objects.

src/ppc/macro-assembler-ppc.cc

Index: src/ppc/macro-assembler-ppc.cc
diff --git a/src/ppc/macro-assembler-ppc.cc b/src/ppc/macro-assembler-ppc.cc
index bda6541704db191b5ec8d7ff42951597bfcaaa40..8e55bc670221f254ff990cff19a28f7a8b84cba5 100644
--- a/src/ppc/macro-assembler-ppc.cc
+++ b/src/ppc/macro-assembler-ppc.cc
@@ -189,19 +189,7 @@ void MacroAssembler::Push(Handle<Object> handle) {
 
 
 void MacroAssembler::Move(Register dst, Handle<Object> value) {
-  AllowDeferredHandleDereference smi_check;
-  if (value->IsSmi()) {
-    LoadSmiLiteral(dst, reinterpret_cast<Smi*>(*value));
-  } else {
-    DCHECK(value->IsHeapObject());
-    if (isolate()->heap()->InNewSpace(*value)) {
-      Handle<Cell> cell = isolate()->factory()->NewCell(value);
-      mov(dst, Operand(cell));
-      LoadP(dst, FieldMemOperand(dst, Cell::kValueOffset));
-    } else {
-      mov(dst, Operand(value));
-    }
-  }
+  mov(dst, Operand(value));
 }