diff --git a/src/compiler/common-operator.h b/src/compiler/common-operator.h
index 7c59f47..c2a7a37 100644
--- a/src/compiler/common-operator.h
+++ b/src/compiler/common-operator.h
@@ -5,17 +5,13 @@
 #ifndef V8_COMPILER_COMMON_OPERATOR_H_
 #define V8_COMPILER_COMMON_OPERATOR_H_
 
+#include "src/assembler.h"
 #include "src/compiler/frame-states.h"
 #include "src/machine-type.h"
 #include "src/zone-containers.h"
 
 namespace v8 {
 namespace internal {
-
-// Forward declarations.
-class ExternalReference;
-class Type;
-
 namespace compiler {
 
 // Forward declarations.
@@ -88,6 +84,7 @@
 
 SelectParameters const& SelectParametersOf(const Operator* const);
 
+CallDescriptor const* CallDescriptorOf(const Operator* const);
 
 size_t ProjectionIndexOf(const Operator* const);
 
@@ -114,6 +111,31 @@
 int ParameterIndexOf(const Operator* const);
 const ParameterInfo& ParameterInfoOf(const Operator* const);
 
+class RelocatablePtrConstantInfo final {
+ public:
+  enum Type { kInt32, kInt64 };
+
+  RelocatablePtrConstantInfo(int32_t value, RelocInfo::Mode rmode)
+      : value_(value), rmode_(rmode), type_(kInt32) {}
+  RelocatablePtrConstantInfo(int64_t value, RelocInfo::Mode rmode)
+      : value_(value), rmode_(rmode), type_(kInt64) {}
+
+  intptr_t value() const { return value_; }
+  RelocInfo::Mode rmode() const { return rmode_; }
+  Type type() const { return type_; }
+
+ private:
+  intptr_t value_;
+  RelocInfo::Mode rmode_;
+  Type type_;
+};
+
+bool operator==(RelocatablePtrConstantInfo const& lhs,
+                RelocatablePtrConstantInfo const& rhs);
+bool operator!=(RelocatablePtrConstantInfo const& lhs,
+                RelocatablePtrConstantInfo const& rhs);
+std::ostream& operator<<(std::ostream&, RelocatablePtrConstantInfo const&);
+size_t hash_value(RelocatablePtrConstantInfo const& p);
 
 // Interface for building common operators that can be used at any level of IR,
 // including JavaScript, mid-level, and low-level.
@@ -155,12 +177,16 @@
   const Operator* NumberConstant(volatile double);
   const Operator* HeapConstant(const Handle<HeapObject>&);
 
+  const Operator* RelocatableInt32Constant(int32_t value,
+                                           RelocInfo::Mode rmode);
+  const Operator* RelocatableInt64Constant(int64_t value,
+                                           RelocInfo::Mode rmode);
+
   const Operator* Select(MachineRepresentation, BranchHint = BranchHint::kNone);
   const Operator* Phi(MachineRepresentation representation,
                       int value_input_count);
   const Operator* EffectPhi(int effect_input_count);
-  const Operator* EffectSet(int arguments);
-  const Operator* Guard(Type* type);
+  const Operator* CheckPoint();
   const Operator* BeginRegion();
   const Operator* FinishRegion();
   const Operator* StateValues(int arguments);