Initial steps towards cleaning up integer arithmetic IR.

runtime/vm/flow_graph.cc

Index: runtime/vm/flow_graph.cc
diff --git a/runtime/vm/flow_graph.cc b/runtime/vm/flow_graph.cc
index 82bf692b4eaa868b52319a2d5e1201e0b9bb697b..3c1e76910642ed19620c591881c3e1405727144c 100644
--- a/runtime/vm/flow_graph.cc
+++ b/runtime/vm/flow_graph.cc
@@ -95,7 +95,7 @@ ConstantInstr* FlowGraph::GetConstant(const Object& object) {
   ConstantInstr* constant = constant_instr_pool_.Lookup(object);
   if (constant == NULL) {
     // Otherwise, allocate and add it to the pool.
-    constant = new(isolate()) ConstantInstr(object);
+    constant = new(isolate()) ConstantInstr(Object::ZoneHandle(object.raw()));

[srdjan, 2014/09/11 17:38:11]

isolate(), object.raw()

     constant->set_ssa_temp_index(alloc_ssa_temp_index());
     AddToInitialDefinitions(constant);
     constant_instr_pool_.Insert(constant);