[runtime] First step to sanitize regexp literal creation.

src/crankshaft/x64/lithium-x64.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_X64_LITHIUM_X64_H_
 #define V8_CRANKSHAFT_X64_LITHIUM_X64_H_
 
 #include "src/crankshaft/hydrogen.h"
 #include "src/crankshaft/lithium.h"
 #include "src/crankshaft/lithium-allocator.h"
@@ skipping 110 matching lines @@
   V(MulI)                                    \
   V(NumberTagD)                              \
   V(NumberTagI)                              \
   V(NumberTagU)                              \
   V(NumberUntagD)                            \
   V(OsrEntry)                                \
   V(Parameter)                               \
   V(Power)                                   \
   V(Prologue)                                \
   V(PushArgument)                            \
-  V(RegExpLiteral)                           \
   V(Return)                                  \
   V(SeqStringGetChar)                        \
   V(SeqStringSetChar)                        \
   V(ShiftI)                                  \
   V(SmiTag)                                  \
   V(SmiUntag)                                \
   V(StackCheck)                              \
   V(StoreCodeEntry)                          \
   V(StoreContextSlot)                        \
   V(StoreFrameContext)                       \
@@ skipping 2312 matching lines @@
 
   LOperand* context() { return inputs_[0]; }
   LOperand* size() { return inputs_[1]; }
   LOperand* temp() { return temps_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(Allocate, "allocate")
   DECLARE_HYDROGEN_ACCESSOR(Allocate)
 };
 
 
-class LRegExpLiteral final : public LTemplateInstruction<1, 1, 0> {
- public:
-  explicit LRegExpLiteral(LOperand* context) {
-    inputs_[0] = context;
-  }
-
-  LOperand* context() { return inputs_[0]; }
-
-  DECLARE_CONCRETE_INSTRUCTION(RegExpLiteral, "regexp-literal")
-  DECLARE_HYDROGEN_ACCESSOR(RegExpLiteral)
-};
-
-
 class LToFastProperties final : public LTemplateInstruction<1, 1, 0> {
  public:
   explicit LToFastProperties(LOperand* value) {
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(ToFastProperties, "to-fast-properties")
   DECLARE_HYDROGEN_ACCESSOR(ToFastProperties)
@@ skipping 314 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_X64_LITHIUM_X64_H_