Replace scalarlist optimizations and split external array loads into two IL instructions.

runtime/vm/deopt_instructions.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/deopt_instructions.h"
 
 #include "vm/assembler.h"
 #include "vm/code_patcher.h"
 #include "vm/intermediate_language.h"
 #include "vm/locations.h"
@@ skipping 682 matching lines @@
 void DeoptInfoBuilder::AddCopy(const Location& from_loc,
                                const Value& from_value,
                                const intptr_t to_index) {
   DeoptInstr* deopt_instr = NULL;
   if (from_loc.IsConstant()) {
     intptr_t object_table_index = FindOrAddObjectInTable(from_loc.constant());
     deopt_instr = new DeoptConstantInstr(object_table_index);
   } else if (from_loc.IsRegister()) {
     deopt_instr = new DeoptRegisterInstr(from_loc.reg());
   } else if (from_loc.IsFpuRegister()) {
-    if (from_loc.representation() == Location::kDouble) {
+    if (from_loc.representation() == kUnboxedDouble) {
       deopt_instr = new DeoptFpuRegisterInstr(from_loc.fpu_reg());
     } else {
-      ASSERT(from_loc.representation() == Location::kMint);
+      ASSERT(from_loc.representation() == kUnboxedMint);
       deopt_instr = new DeoptInt64FpuRegisterInstr(from_loc.fpu_reg());
     }
   } else if (from_loc.IsStackSlot()) {
     intptr_t from_index = (from_loc.stack_index() < 0) ?
         from_loc.stack_index() + num_args_ :
         from_loc.stack_index() + num_args_ - kFirstLocalSlotIndex + 1;
     deopt_instr = new DeoptStackSlotInstr(from_index);
   } else if (from_loc.IsDoubleStackSlot()) {
     intptr_t from_index = (from_loc.stack_index() < 0) ?
         from_loc.stack_index() + num_args_ :
         from_loc.stack_index() + num_args_ - kFirstLocalSlotIndex + 1;
-    if (from_loc.representation() == Location::kDouble) {
+    if (from_loc.representation() == kUnboxedDouble) {
       deopt_instr = new DeoptDoubleStackSlotInstr(from_index);
     } else {
-      ASSERT(from_loc.representation() == Location::kMint);
+      ASSERT(from_loc.representation() == kUnboxedMint);
       deopt_instr = new DeoptInt64StackSlotInstr(from_index);
     }
   } else {
     UNREACHABLE();
   }
   ASSERT(to_index == instructions_.length());
   instructions_.Add(deopt_instr);
 }
 
 
@@ skipping 82 matching lines @@
                           Smi* offset,
                           DeoptInfo* info,
                           Smi* reason) {
   intptr_t i = index * kEntrySize;
   *offset ^= table.At(i);
   *info ^= table.At(i + 1);
   *reason ^= table.At(i + 2);
 }
 
 }  // namespace dart