A64: Add support for loading cp from deferred if it's stored in new space

src/a64/lithium-codegen-a64.cc

Index: src/a64/lithium-codegen-a64.cc
diff --git a/src/a64/lithium-codegen-a64.cc b/src/a64/lithium-codegen-a64.cc
index 64da578e5ccf5667e7f44cf9063dd64781341319..da03ccc214700a949048b590d342a434f84521c2 100644
--- a/src/a64/lithium-codegen-a64.cc
+++ b/src/a64/lithium-codegen-a64.cc
@@ -520,9 +520,8 @@ void LCodeGen::LoadContextFromDeferred(LOperand* context) {
   } else if (context->IsConstantOperand()) {
     HConstant* constant =
         chunk_->LookupConstant(LConstantOperand::cast(context));
-    // TODO(all): on ARM this move can handle object in new space, not in A64.
-    // Check if this can be a problem.
-    __ Mov(cp, Operand(Handle<Object>::cast(constant->handle(isolate()))));
+    __ LoadHeapObject(cp,

[ulan, 2014/02/11 10:49:04]

ARM uses "Move(cp.." here.

[jochen (gone - plz use gerrit), 2014/02/11 10:50:31]

Yes, but A64 doesn't have such a fancy move. However, the implementation of
Move(..Handle) and LoadHeapObject is exactly the same.

+                      Handle<HeapObject>::cast(constant->handle(isolate())));
   } else {
     UNREACHABLE();
   }