ARM, ARM64: Optimize array copy

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 "src/v8.h"
 
 #include "src/double.h"
 #include "src/factory.h"
 #include "src/hydrogen-infer-representation.h"
 #include "src/property-details-inl.h"
@@ skipping 794 matching lines @@
     case HValue::kClassOfTestAndBranch:
     case HValue::kCompareGeneric:
     case HValue::kCompareHoleAndBranch:
     case HValue::kCompareMap:
     case HValue::kCompareMinusZeroAndBranch:
     case HValue::kCompareNumericAndBranch:
     case HValue::kCompareObjectEqAndBranch:
     case HValue::kConstant:
     case HValue::kConstructDouble:
     case HValue::kContext:
+    case HValue::kCopyElements:
     case HValue::kDebugBreak:
     case HValue::kDeclareGlobals:
     case HValue::kDoubleBits:
     case HValue::kDummyUse:
     case HValue::kEnterInlined:
     case HValue::kEnvironmentMarker:
+    case HValue::kFillElements:
     case HValue::kForceRepresentation:
     case HValue::kGetCachedArrayIndex:
     case HValue::kGoto:
     case HValue::kHasCachedArrayIndexAndBranch:
     case HValue::kHasInstanceTypeAndBranch:
     case HValue::kInnerAllocatedObject:
     case HValue::kInstanceOf:
     case HValue::kInstanceOfKnownGlobal:
     case HValue::kIsConstructCallAndBranch:
     case HValue::kIsObjectAndBranch:
@@ skipping 2768 matching lines @@
   value()->PrintNameTo(stream);
   if (NeedsWriteBarrier()) {
     stream->Add(" (write-barrier)");
   }
   if (has_transition()) {
     stream->Add(" (transition map %p)", *transition_map());
   }
 }
 
 
+void HFillElements::PrintDataTo(StringStream* stream) {
+  elements()->PrintNameTo(stream);
+  stream->Add("[");
+  from()->PrintNameTo(stream);
+  stream->Add("-");
+  to()->PrintNameTo(stream);
+  stream->Add("] = ");
+  value()->PrintNameTo(stream);
+}
+
+
+void HCopyElements::PrintDataTo(StringStream* stream) {
+  dst()->PrintNameTo(stream);
+  stream->Add("[0-");
+  length()->PrintNameTo(stream);
+  stream->Add("] = ");
+  src()->PrintNameTo(stream);
+  stream->Add("[0-");
+  length()->PrintNameTo(stream);
+  stream->Add("]");
+}
+
+
 void HStoreKeyed::PrintDataTo(StringStream* stream) {
   if (!is_external()) {
     elements()->PrintNameTo(stream);
   } else {
     elements()->PrintNameTo(stream);
     stream->Add(".");
     stream->Add(ElementsKindToString(elements_kind()));
     ASSERT(elements_kind() >= FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND &&
            elements_kind() <= LAST_EXTERNAL_ARRAY_ELEMENTS_KIND);
   }
@@ skipping 1220 matching lines @@
       break;
     case kExternalMemory:
       stream->Add("[external-memory]");
       break;
   }
 
   stream->Add("@%d", offset());
 }
 
 } }  // namespace v8::internal