[crankshaft] Get rid of the StoreFrameContext instruction.

src/crankshaft/hydrogen-instructions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_
 #define V8_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_
 
 #include <cstring>
 #include <iosfwd>
 
@@ skipping 114 matching lines @@
   V(Ror)                                      \
   V(Sar)                                      \
   V(SeqStringGetChar)                         \
   V(SeqStringSetChar)                         \
   V(Shl)                                      \
   V(Shr)                                      \
   V(Simulate)                                 \
   V(StackCheck)                               \
   V(StoreCodeEntry)                           \
   V(StoreContextSlot)                         \
-  V(StoreFrameContext)                        \
   V(StoreKeyed)                               \
   V(StoreKeyedGeneric)                        \
   V(StoreNamedField)                          \
   V(StoreNamedGeneric)                        \
   V(StringAdd)                                \
   V(StringCharCodeAt)                         \
   V(StringCharFromCode)                       \
   V(StringCompareAndBranch)                   \
   V(Sub)                                      \
   V(ThisFunction)                             \
@@ skipping 7090 matching lines @@
   std::ostream& PrintDataTo(std::ostream& os) const override;  // NOLINT
 
   HType CalculateInferredType() override { return HType::Tagged(); }
 
   DECLARE_CONCRETE_INSTRUCTION(LoadFieldByIndex);
 
  private:
   bool IsDeletable() const override { return true; }
 };
 
-
-class HStoreFrameContext: public HUnaryOperation {
- public:
-  DECLARE_INSTRUCTION_FACTORY_P1(HStoreFrameContext, HValue*);
-
-  HValue* context() { return OperandAt(0); }
-
-  Representation RequiredInputRepresentation(int index) override {
-    return Representation::Tagged();
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(StoreFrameContext)
- private:
-  explicit HStoreFrameContext(HValue* context)
-      : HUnaryOperation(context) {
-    set_representation(Representation::Tagged());
-    SetChangesFlag(kContextSlots);
-  }
-};
-
-
-
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_