Migrate instance of deprecated maps in HCheckMaps.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index f10937977c8f6393f301b9af0d2e05c7092a1a59..7734d2b4a9f74754d5c21b142e4ec68ddf99a94c 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -626,7 +626,7 @@ bool HValue::Equals(HValue* other) {
   if (!other->type_.Equals(type_)) return false;
   if (other->flags() != flags()) return false;
   if (OperandCount() != other->OperandCount()) return false;
-  for (int i = 0; i < OperandCount(); ++i) {
+  for (int i = 0; i < CompareOperandCount(); ++i) {
     if (OperandAt(i)->id() != other->OperandAt(i)->id()) return false;
   }
   bool result = DataEquals(other);
@@ -637,7 +637,7 @@ bool HValue::Equals(HValue* other) {
 
 intptr_t HValue::Hashcode() {
   intptr_t result = opcode();
-  int count = OperandCount();
+  int count = CompareOperandCount();
   for (int i = 0; i < count; ++i) {
     result = result * 19 + OperandAt(i)->id() + (result >> 7);
   }
@@ -3289,8 +3289,9 @@ HCheckMaps* HCheckMaps::New(Zone* zone,
                             Handle<Map> map,
                             CompilationInfo* info,
                             HValue* typecheck) {
-  HCheckMaps* check_map = new(zone) HCheckMaps(value, zone, typecheck);
+  HCheckMaps* check_map = new(zone) HCheckMaps(context, value, zone, typecheck);
   check_map->map_set_.Add(map, zone);
+  check_map->has_migration_target_ = map->is_migration_target();
   if (map->CanOmitMapChecks() &&
       value->IsConstant() &&
       HConstant::cast(value)->InstanceOf(map)) {