Avoid handle dereference during graph optimization.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index 38015b4fe442dbaac45f0590ba3db1e4ef0df0dc..fc59839ea07c45422eae2216717fe7c0cb81219b 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -818,8 +818,7 @@ void LCodeGen::DeoptimizeIf(Condition cc, LEnvironment* environment) {
 
   ASSERT(FLAG_deopt_every_n_times < 2);  // Other values not supported on ARM.
 
-  if (FLAG_deopt_every_n_times == 1 &&
-      info_->shared_info()->opt_count() == id) {
+  if (FLAG_deopt_every_n_times == 1 && info_->opt_count() == id) {
     __ Jump(entry, RelocInfo::RUNTIME_ENTRY);
     return;
   }
@@ -4508,8 +4507,8 @@ void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) {
 
   Handle<Map> from_map = instr->original_map();
   Handle<Map> to_map = instr->transitioned_map();
-  ElementsKind from_kind = from_map->elements_kind();
-  ElementsKind to_kind = to_map->elements_kind();
+  ElementsKind from_kind = instr->from_kind();
+  ElementsKind to_kind = instr->to_kind();
 
   Label not_applicable;
   __ ldr(scratch, FieldMemOperand(object_reg, HeapObject::kMapOffset));