Generate TypedArrayInitialize builtin in hydrogen.

src/arm/lithium-codegen-arm.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 444 matching lines @@
 
 int32_t LCodeGen::ToInteger32(LConstantOperand* op) const {
   return ToRepresentation(op, Representation::Integer32());
 }
 
 
 int32_t LCodeGen::ToRepresentation(LConstantOperand* op,
                                    const Representation& r) const {
   HConstant* constant = chunk_->LookupConstant(op);
   int32_t value = constant->Integer32Value();
-  if (r.IsInteger32()) return value;
+  if (r.IsInteger32() || r.IsExternal()) return value;
   ASSERT(r.IsSmiOrTagged());
   return reinterpret_cast<int32_t>(Smi::FromInt(value));
 }
 
 
 Smi* LCodeGen::ToSmi(LConstantOperand* op) const {
   HConstant* constant = chunk_->LookupConstant(op);
   return Smi::FromInt(constant->Integer32Value());
 }
 
@@ skipping 5461 matching lines @@
   __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index));
   __ ldr(result, FieldMemOperand(scratch,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal