[turbofan] Drop broken StaticParameterTraits.

src/compiler/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/operator.h"
 
+#include <limits>
+
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 Operator::~Operator() {}
 
 
+std::ostream& operator<<(std::ostream& os, const Operator& op) {
+  op.PrintTo(os);
+  return os;
+}
+
+
 SimpleOperator::SimpleOperator(Opcode opcode, Properties properties,
-                               int input_count, int output_count,
+                               size_t input_count, size_t output_count,
                                const char* mnemonic)
     : Operator(opcode, properties, mnemonic),
-      input_count_(input_count),
-      output_count_(output_count) {}
+      input_count_(static_cast<uint8_t>(input_count)),
+      output_count_(static_cast<uint8_t>(output_count)) {
+  DCHECK(input_count <= std::numeric_limits<uint8_t>::max());
+  DCHECK(output_count <= std::numeric_limits<uint8_t>::max());
+}
 
 
 SimpleOperator::~SimpleOperator() {}
 
+
+bool SimpleOperator::Equals(const Operator* that) const {
+  return opcode() == that->opcode();
+}
+
+
+size_t SimpleOperator::HashCode() const {
+  return base::hash<Opcode>()(opcode());
+}
+
+
+int SimpleOperator::InputCount() const { return input_count_; }
+
+
+int SimpleOperator::OutputCount() const { return output_count_; }
+
+
+void SimpleOperator::PrintTo(std::ostream& os) const { os << mnemonic(); }
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8