Use default argument count for runtime function calls.

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 728 matching lines @@
   CallFunctionParameters parameters(arity, language_mode, feedback,
                                     tail_call_mode, convert_mode);
   return new (zone()) Operator1<CallFunctionParameters>(   // --
       IrOpcode::kJSCallFunction, Operator::kNoProperties,  // opcode
       "JSCallFunction",                                    // name
       parameters.arity(), 1, 1, 1, 1, 2,                   // inputs/outputs
       parameters);                                         // parameter
 }
 
 
+const Operator* JSOperatorBuilder::CallRuntime(Runtime::FunctionId id) {
+  const Runtime::Function* f = Runtime::FunctionForId(id);
+  return CallRuntime(f, f->nargs);
+}
+
+
 const Operator* JSOperatorBuilder::CallRuntime(Runtime::FunctionId id,
                                                size_t arity) {
-  CallRuntimeParameters parameters(id, arity);
-  const Runtime::Function* f = Runtime::FunctionForId(parameters.id());
+  const Runtime::Function* f = Runtime::FunctionForId(id);
+  return CallRuntime(f, arity);
+}
+
+
+const Operator* JSOperatorBuilder::CallRuntime(const Runtime::Function* f,
+                                               size_t arity) {
+  CallRuntimeParameters parameters(f->function_id, arity);
   DCHECK(f->nargs == -1 || f->nargs == static_cast<int>(parameters.arity()));
   return new (zone()) Operator1<CallRuntimeParameters>(   // --
       IrOpcode::kJSCallRuntime, Operator::kNoProperties,  // opcode
       "JSCallRuntime",                                    // name
       parameters.arity(), 1, 1, f->result_size, 1, 2,     // inputs/outputs
       parameters);                                        // parameter
 }
 
 
 const Operator* JSOperatorBuilder::CallConstruct(
@@ skipping 238 matching lines @@
   return new (zone()) Operator1<Handle<ScopeInfo>>(               // --
       IrOpcode::kJSCreateScriptContext, Operator::kNoProperties,  // opcode
       "JSCreateScriptContext",                                    // name
       1, 1, 1, 1, 1, 2,                                           // counts
       scpope_info);                                               // parameter
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8