Generate TypedArrayInitialize builtin in hydrogen.

src/hydrogen-instructions.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1237 matching lines @@
   }
   // Optimize double negation, a common pattern used for ToInt32(x).
   HValue* arg;
   if (MatchDoubleNegation(this, &arg) && !arg->CheckFlag(kUint32)) {
     return arg;
   }
   return this;
 }
 
 
+Representation HAdd::RepresentationFromInputs() {
+  Representation left_rep = left()->representation();
+  if (left_rep.IsExternal()) {
+    return Representation::External();
+  }
+  return HArithmeticBinaryOperation::RepresentationFromInputs();
+}
+
+
+Representation HAdd::RequiredInputRepresentation(int index) {
+  if (index == 2) {
+    Representation left_rep = left()->representation();
+    if (left_rep.IsExternal()) {
+      return Representation::Integer32();
+    }
+  }
+  return HArithmeticBinaryOperation::RequiredInputRepresentation(index);
+}
+
+
 static bool IsIdentityOperation(HValue* arg1, HValue* arg2, int32_t identity) {
   return arg1->representation().IsSpecialization() &&
     arg2->EqualsInteger32Constant(identity);
 }
 
 
 HValue* HAdd::Canonicalize() {
   // Adding 0 is an identity operation except in case of -0: -0 + 0 = +0
   if (IsIdentityOperation(left(), right(), 0) &&
       !left()->representation().IsDouble()) {  // Left could be -0.
@@ skipping 2474 matching lines @@
 }
 
 
 DEFINE_NEW_H_SIMPLE_ARITHMETIC_INSTR(HAdd, +)
 DEFINE_NEW_H_SIMPLE_ARITHMETIC_INSTR(HMul, *)
 DEFINE_NEW_H_SIMPLE_ARITHMETIC_INSTR(HSub, -)
 
 #undef DEFINE_NEW_H_SIMPLE_ARITHMETIC_INSTR
 
 
+HAdd* HAdd::NewExternalPointerOffset(Zone* zone,
+                                     HValue* context,
+                                     HValue* base_pointer,
+                                     HValue* offset) {
+  HAdd* result = new(zone) HAdd(context, base_pointer, offset);
+
+  result->set_observed_input_representation(1, Representation::External());
+  result->initialize_output_representation(Representation::External());
+  return result;
+}
+
+
 HInstruction* HStringAdd::New(Zone* zone,
                               HValue* context,
                               HValue* left,
                               HValue* right,
                               StringAddFlags flags) {
   if (FLAG_fold_constants && left->IsConstant() && right->IsConstant()) {
     HConstant* c_right = HConstant::cast(right);
     HConstant* c_left = HConstant::cast(left);
     if (c_left->HasStringValue() && c_right->HasStringValue()) {
       Handle<String> concat = zone->isolate()->factory()->NewFlatConcatString(
@@ skipping 589 matching lines @@
       break;
     case kExternalMemory:
       stream->Add("[external-memory]");
       break;
   }
 
   stream->Add("@%d", offset());
 }
 
 } }  // namespace v8::internal