Rollback of r11118, r11109 in trunk branch.

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 b9e390ee4ecf72bae7de0a209e01ae233ca178f2..2d8fd2ecce26ccddc958c3ac07ff1d3a9b50ae58 100644
--- a/src/x64/lithium-x64.h
+++ b/src/x64/lithium-x64.h
@@ -179,8 +179,7 @@ class LCodeGen;
   V(CheckMapValue)                              \
   V(LoadFieldByIndex)                           \
   V(DateField)                                  \
-  V(WrapReceiver)                               \
-  V(Pop)
+  V(WrapReceiver)
 
 
 #define DECLARE_CONCRETE_INSTRUCTION(type, mnemonic)              \
@@ -536,15 +535,9 @@ class LArgumentsLength: public LTemplateInstruction<1, 1, 0> {
 
 class LArgumentsElements: public LTemplateInstruction<1, 0, 0> {
  public:
-  explicit LArgumentsElements(bool from_inlined)
-      : from_inlined_(from_inlined) { }
-
-  bool from_inlined() const { return from_inlined_; }
+  LArgumentsElements() { }
 
   DECLARE_CONCRETE_INSTRUCTION(ArgumentsElements, "arguments-elements")
-
- private:
-  bool from_inlined_;
 };
 
 
@@ -1365,19 +1358,6 @@ class LPushArgument: public LTemplateInstruction<0, 1, 0> {
 };
 
 
-class LPop: public LTemplateInstruction<0, 0, 0> {
- public:
-  explicit LPop(int count) : count_(count) { }
-
-  int count() const { return count_; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Pop, "pop")
-
- private:
-  int count_;
-};
-
-
 class LThisFunction: public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(ThisFunction, "this-function")