[turbofan] Use FastNewClosureStub if possible.

src/compiler/js-operator.cc

 // Copyright 2014 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.
 
 #include "src/compiler/js-operator.h"
 
 #include <limits>
 
 #include "src/base/lazy-instance.h"
 #include "src/compiler/opcodes.h"
@@ skipping 190 matching lines @@
   return os << p.language_mode() << ", " << Brief(*p.name().handle());
 }
 
 
 const StoreNamedParameters& StoreNamedParametersOf(const Operator* op) {
   DCHECK_EQ(IrOpcode::kJSStoreNamed, op->opcode());
   return OpParameter<StoreNamedParameters>(op);
 }
 
 
+bool operator==(CreateClosureParameters const& lhs,
+                CreateClosureParameters const& rhs) {
+  return lhs.pretenure() == rhs.pretenure() &&
+         lhs.shared_info().is_identical_to(rhs.shared_info());
+}
+
+
+bool operator!=(CreateClosureParameters const& lhs,
+                CreateClosureParameters const& rhs) {
+  return !(lhs == rhs);
+}
+
+
+size_t hash_value(CreateClosureParameters const& p) {
+  // TODO(mstarzinger): Include hash of the SharedFunctionInfo here.
+  base::hash<PretenureFlag> h;
+  return h(p.pretenure());
+}
+
+
+std::ostream& operator<<(std::ostream& os, CreateClosureParameters const& p) {
+  return os << p.pretenure() << ", " << Brief(*p.shared_info());
+}
+
+
+const CreateClosureParameters& CreateClosureParametersOf(const Operator* op) {
+  DCHECK_EQ(IrOpcode::kJSCreateClosure, op->opcode());
+  return OpParameter<CreateClosureParameters>(op);
+}
+
+
 #define CACHED_OP_LIST(V)                                 \
   V(Equal, Operator::kNoProperties, 2, 1)                 \
   V(NotEqual, Operator::kNoProperties, 2, 1)              \
   V(StrictEqual, Operator::kPure, 2, 1)                   \
   V(StrictNotEqual, Operator::kPure, 2, 1)                \
   V(UnaryNot, Operator::kPure, 1, 1)                      \
   V(ToBoolean, Operator::kPure, 1, 1)                     \
   V(ToNumber, Operator::kNoProperties, 1, 1)              \
   V(ToString, Operator::kNoProperties, 1, 1)              \
   V(ToName, Operator::kNoProperties, 1, 1)                \
@@ skipping 209 matching lines @@
   ContextAccess access(depth, index, false);
   return new (zone()) Operator1<ContextAccess>(  // --
       IrOpcode::kJSStoreContext,                 // opcode
       Operator::kNoRead | Operator::kNoThrow,    // flags
       "JSStoreContext",                          // name
       2, 1, 1, 0, 1, 0,                          // counts
       access);                                   // parameter
 }
 
 
+const Operator* JSOperatorBuilder::CreateClosure(
+    Handle<SharedFunctionInfo> shared_info, PretenureFlag pretenure) {
+  CreateClosureParameters parameters(shared_info, pretenure);
+  return new (zone()) Operator1<CreateClosureParameters>(  // --
+      IrOpcode::kJSCreateClosure, Operator::kNoThrow,      // opcode
+      "JSCreateClosure",                                   // name
+      1, 1, 1, 1, 1, 0,                                    // counts
+      parameters);                                         // parameter
+}
+
+
 const Operator* JSOperatorBuilder::CreateCatchContext(
     const Unique<String>& name) {
   return new (zone()) Operator1<Unique<String>>(                 // --
       IrOpcode::kJSCreateCatchContext, Operator::kNoProperties,  // opcode
       "JSCreateCatchContext",                                    // name
       2, 1, 1, 1, 1, 2,                                          // counts
       name);                                                     // parameter
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8