Version 3.5.5.

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
===================================================================
--- src/x64/lithium-x64.cc	(revision 8931)
+++ src/x64/lithium-x64.cc	(working copy)
@@ -1036,11 +1036,7 @@
         : instr->SecondSuccessor();
     return new LGoto(successor->block_id());
   }
-  LInstruction* branch = new LBranch(UseRegister(v));
-  // When we handle all cases, we never deopt, so we don't need to assign the
-  // environment then.
-  bool all_cases_handled = instr->expected_input_types().IsAll();
-  return all_cases_handled ? branch : AssignEnvironment(branch);
+  return AssignEnvironment(new LBranch(UseRegister(v)));
 }
 
 
@@ -1502,19 +1498,13 @@
 }
 
 
-LInstruction* LChunkBuilder::DoFixedArrayLength(HFixedArrayLength* instr) {
+LInstruction* LChunkBuilder::DoFixedArrayBaseLength(
+    HFixedArrayBaseLength* instr) {
   LOperand* array = UseRegisterAtStart(instr->value());
-  return DefineAsRegister(new LFixedArrayLength(array));
+  return DefineAsRegister(new LFixedArrayBaseLength(array));
 }
 
 
-LInstruction* LChunkBuilder::DoExternalArrayLength(
-    HExternalArrayLength* instr) {
-  LOperand* array = UseRegisterAtStart(instr->value());
-  return DefineAsRegister(new LExternalArrayLength(array));
-}
-
-
 LInstruction* LChunkBuilder::DoElementsKind(HElementsKind* instr) {
   LOperand* object = UseRegisterAtStart(instr->value());
   return DefineAsRegister(new LElementsKind(object));