Don't use environment values at certain deoptimize-instructions.

src/hydrogen.h

Index: src/hydrogen.h
===================================================================
--- src/hydrogen.h	(revision 7872)
+++ src/hydrogen.h	(working copy)
@@ -125,8 +125,8 @@
   void AddSimulate(int id) { AddInstruction(CreateSimulate(id)); }
   void AssignCommonDominator(HBasicBlock* other);
 
-  void FinishExitWithDeoptimization() {
-    FinishExit(CreateDeoptimize());
+  void FinishExitWithDeoptimization(HDeoptimize::UseEnvironment has_uses) {
+    FinishExit(CreateDeoptimize(has_uses));
   }
 
   // Add the inlined function exit sequence, adding an HLeaveInlined
@@ -153,7 +153,7 @@
   void AddDominatedBlock(HBasicBlock* block);
 
   HSimulate* CreateSimulate(int id);
-  HDeoptimize* CreateDeoptimize();
+  HDeoptimize* CreateDeoptimize(HDeoptimize::UseEnvironment has_uses);
 
   int block_id_;
   HGraph* graph_;