Revert of Remove ExternalArray, derived types, and element kinds

src/mips64/lithium-mips64.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 <sstream>
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS64
 
@@ skipping 2172 matching lines @@
   return DefineAsRegister(new(zone()) LLoadRoot);
 }
 
 
 LInstruction* LChunkBuilder::DoLoadKeyed(HLoadKeyed* instr) {
   DCHECK(instr->key()->representation().IsSmiOrInteger32());
   ElementsKind elements_kind = instr->elements_kind();
   LOperand* key = UseRegisterOrConstantAtStart(instr->key());
   LInstruction* result = NULL;
 
-  if (!instr->is_fixed_typed_array()) {
+  if (!instr->is_typed_elements()) {
     LOperand* obj = NULL;
     if (instr->representation().IsDouble()) {
       obj = UseRegister(instr->elements());
     } else {
       DCHECK(instr->representation().IsSmiOrTagged() ||
              instr->representation().IsInteger32());
       obj = UseRegisterAtStart(instr->elements());
     }
     result = DefineAsRegister(new(zone()) LLoadKeyed(obj, key));
   } else {
     DCHECK(
         (instr->representation().IsInteger32() &&
          !IsDoubleOrFloatElementsKind(elements_kind)) ||
         (instr->representation().IsDouble() &&
          IsDoubleOrFloatElementsKind(elements_kind)));
     LOperand* backing_store = UseRegister(instr->elements());
     result = DefineAsRegister(new(zone()) LLoadKeyed(backing_store, key));
   }
 
   bool needs_environment;
-  if (instr->is_fixed_typed_array()) {
+  if (instr->is_external() || instr->is_fixed_typed_array()) {
     // see LCodeGen::DoLoadKeyedExternalArray
-    needs_environment = elements_kind == UINT32_ELEMENTS &&
+    needs_environment = (elements_kind == EXTERNAL_UINT32_ELEMENTS ||
+                         elements_kind == UINT32_ELEMENTS) &&
                         !instr->CheckFlag(HInstruction::kUint32);
   } else {
     // see LCodeGen::DoLoadKeyedFixedDoubleArray and
     // LCodeGen::DoLoadKeyedFixedArray
     needs_environment =
         instr->RequiresHoleCheck() ||
         (instr->hole_mode() == CONVERT_HOLE_TO_UNDEFINED && info()->IsStub());
   }
 
   if (needs_environment) {
@@ skipping 14 matching lines @@
   }
 
   LInstruction* result =
       DefineFixed(new(zone()) LLoadKeyedGeneric(context, object, key, vector),
                   v0);
   return MarkAsCall(result, instr);
 }
 
 
 LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) {
-  if (!instr->is_fixed_typed_array()) {
+  if (!instr->is_typed_elements()) {
     DCHECK(instr->elements()->representation().IsTagged());
     bool needs_write_barrier = instr->NeedsWriteBarrier();
     LOperand* object = NULL;
     LOperand* val = NULL;
     LOperand* key = NULL;
 
     if (instr->value()->representation().IsDouble()) {
       object = UseRegisterAtStart(instr->elements());
       key = UseRegisterOrConstantAtStart(instr->key());
       val = UseRegister(instr->value());
@@ skipping 414 matching lines @@
   LAllocateBlockContext* result =
       new(zone()) LAllocateBlockContext(context, function);
   return MarkAsCall(DefineFixed(result, cp), instr);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64