Revert "GVN fix, preventing loads hoisting above stores to the same field when HObjectAccess's repr…

src/hydrogen-gvn.cc

Index: src/hydrogen-gvn.cc
diff --git a/src/hydrogen-gvn.cc b/src/hydrogen-gvn.cc
index 385947d754f2cd624a4a0c32579a9d4063845479..e6f1ae90f39306f8214123adef1c8ff217b6d2f3 100644
--- a/src/hydrogen-gvn.cc
+++ b/src/hydrogen-gvn.cc
@@ -466,7 +466,7 @@ bool SideEffectsTracker::ComputeGlobalVar(Unique<Cell> cell, int* index) {
 bool SideEffectsTracker::ComputeInobjectField(HObjectAccess access,
                                               int* index) {
   for (int i = 0; i < num_inobject_fields_; ++i) {
-    if (access.SameField(inobject_fields_[i])) {
+    if (access.Equals(inobject_fields_[i])) {
       *index = i;
       return true;
     }