Support external arrays in Crankshaft

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index d75794cc133701239b12c22debce4830da28ce89..89ca1fd1feb64d86f04935a3c4d2b3d2da95799d 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1822,15 +1822,21 @@ LInstruction* LChunkBuilder::DoLoadKeyedFastElement(
 }
 
 
-LInstruction* LChunkBuilder::DoLoadPixelArrayElement(
-    HLoadPixelArrayElement* instr) {
+LInstruction* LChunkBuilder::DoLoadKeyedSpecializedArrayElement(
+    HLoadKeyedSpecializedArrayElement* instr) {
+  // TODO(danno): Add support for other external array types.
+  if (instr->array_type() != kExternalPixelArray) {
+    Abort("unsupported load for external array type.");
+  }
+
   ASSERT(instr->representation().IsInteger32());
   ASSERT(instr->key()->representation().IsInteger32());
   LOperand* external_pointer =
       UseRegisterAtStart(instr->external_pointer());
   LOperand* key = UseRegisterAtStart(instr->key());
-  LLoadPixelArrayElement* result =
-      new LLoadPixelArrayElement(external_pointer, key);
+  LLoadKeyedSpecializedArrayElement* result =
+      new LLoadKeyedSpecializedArrayElement(external_pointer,
+                                            key);
   return DefineAsRegister(result);
 }
 
@@ -1864,8 +1870,13 @@ LInstruction* LChunkBuilder::DoStoreKeyedFastElement(
 }
 
 
-LInstruction* LChunkBuilder::DoStorePixelArrayElement(
-    HStorePixelArrayElement* instr) {
+LInstruction* LChunkBuilder::DoStoreKeyedSpecializedArrayElement(
+    HStoreKeyedSpecializedArrayElement* instr) {
+  // TODO(danno): Add support for other external array types.
+  if (instr->array_type() != kExternalPixelArray) {
+    Abort("unsupported store for external array type.");
+  }
+
   ASSERT(instr->value()->representation().IsInteger32());
   ASSERT(instr->external_pointer()->representation().IsExternal());
   ASSERT(instr->key()->representation().IsInteger32());
@@ -1874,7 +1885,9 @@ LInstruction* LChunkBuilder::DoStorePixelArrayElement(
   LOperand* value = UseTempRegister(instr->value());  // changed by clamp.
   LOperand* key = UseRegister(instr->key());
 
-  return new LStorePixelArrayElement(external_pointer, key, value);
+  return new LStoreKeyedSpecializedArrayElement(external_pointer,
+                                                key,
+                                                value);
 }