External Array renaming and boilerplate scrapping

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
diff --git a/src/x64/lithium-x64.cc b/src/x64/lithium-x64.cc
index 49f7b64f14e6b359302833d3f2be19f9087443e9..d51c336d4baca58b51d251b4a8e6fb97aa46dff2 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -2038,7 +2038,7 @@ LInstruction* LChunkBuilder::DoLoadKeyed(HLoadKeyed* instr) {
 
   DefineAsRegister(result);
   bool can_deoptimize = instr->RequiresHoleCheck() ||
-      (elements_kind == EXTERNAL_UNSIGNED_INT_ELEMENTS) ||
+      (elements_kind == EXTERNAL_UINT32_ELEMENTS) ||
       (elements_kind == UINT32_ELEMENTS);
   // An unsigned int array load might overflow and cause a deopt, make sure it
   // has an environment.
@@ -2099,8 +2099,8 @@ LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) {
          (instr->is_external() &&
           instr->elements()->representation().IsExternal()));
   bool val_is_temp_register =
-      elements_kind == EXTERNAL_PIXEL_ELEMENTS ||
-      elements_kind == EXTERNAL_FLOAT_ELEMENTS ||
+      elements_kind == EXTERNAL_UINT8_CLAMPED_ELEMENTS ||
+      elements_kind == EXTERNAL_FLOAT32_ELEMENTS ||
       elements_kind == FLOAT32_ELEMENTS;
   LOperand* val = val_is_temp_register ? UseTempRegister(instr->value())
       : UseRegister(instr->value());