ARM64: Regenerate instead of spilling and restoring cheap lithium instructions.

src/hydrogen-instructions.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "v8.h"
 
 #include "double.h"
 #include "factory.h"
 #include "hydrogen-infer-representation.h"
 #include "property-details-inl.h"
@@ skipping 351 matching lines @@
 void HUseIterator::Advance() {
   current_ = next_;
   if (current_ != NULL) {
     next_ = current_->tail();
     value_ = current_->value();
     index_ = current_->index();
   }
 }
 
 
+bool HValue::HasPhiUses() const {
+  for (HUseIterator it(uses()); !it.Done(); it.Advance()) {
+    if (it.value()->IsPhi()) {
+      return true;
+    }
+  }
+  return false;
+}
+
+
 int HValue::UseCount() const {
   int count = 0;
   for (HUseIterator it(uses()); !it.Done(); it.Advance()) ++count;
   return count;
 }
 
 
 HUseListNode* HValue::RemoveUse(HValue* value, int index) {
   HUseListNode* previous = NULL;
   HUseListNode* current = use_list_;
@@ skipping 4380 matching lines @@
       break;
     case kExternalMemory:
       stream->Add("[external-memory]");
       break;
   }
 
   stream->Add("@%d", offset());
 }
 
 } }  // namespace v8::internal