ARM, ARM64: Optimize array copy

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 8b40a249d34372d793adad1c69c6496d82e5bd52..19d2078eed467ec181a089a4fe6973d89b890668 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -812,12 +812,14 @@ bool HInstruction::CanDeoptimize() {
     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:
@@ -3606,6 +3608,29 @@ void HStoreNamedField::PrintDataTo(StringStream* stream) {
 }
 
 
+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);