x64: Implement context stores and loads, unknown osr value, and osr

src/x64/lithium-x64.h

Index: src/x64/lithium-x64.h
diff --git a/src/x64/lithium-x64.h b/src/x64/lithium-x64.h
index d888c01c510dcd3aac60f373af09e8a674542d39..09072404a059578bc0cfbefc2b1dbcee68ededd7 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -141,6 +141,7 @@ class LCodeGen;
   V(SmiTag)                                     \
   V(SmiUntag)                                   \
   V(StackCheck)                                 \
+  V(StoreContextSlot)                           \
   V(StoreGlobal)                                \
   V(StoreKeyedFastElement)                      \
   V(StoreKeyedGeneric)                          \
@@ -1246,6 +1247,25 @@ class LLoadContextSlot: public LTemplateInstruction<1, 1, 0> {
 };
 
 
+class LStoreContextSlot: public LTemplateInstruction<0, 2, 0> {
+ public:
+  LStoreContextSlot(LOperand* context, LOperand* value) {
+    inputs_[0] = context;
+    inputs_[1] = value;
+  }
+
+  DECLARE_CONCRETE_INSTRUCTION(StoreContextSlot, "store-context-slot")
+  DECLARE_HYDROGEN_ACCESSOR(StoreContextSlot)
+
+  LOperand* context() { return InputAt(0); }
+  LOperand* value() { return InputAt(1); }
+  int slot_index() { return hydrogen()->slot_index(); }
+  int needs_write_barrier() { return hydrogen()->NeedsWriteBarrier(); }
+
+  virtual void PrintDataTo(StringStream* stream);
+};
+
+
 class LPushArgument: public LTemplateInstruction<0, 1, 0> {
  public:
   explicit LPushArgument(LOperand* value) {