[turbofan] Strength reduction for inline comparisons.

src/compiler/node-matchers.cc

Index: src/compiler/node-matchers.cc
diff --git a/src/compiler/node-matchers.cc b/src/compiler/node-matchers.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c6ae39000c025ae98f6f1b8a0ad67faf148c185e
--- /dev/null
+++ b/src/compiler/node-matchers.cc
@@ -0,0 +1,17 @@
+// Copyright 2015 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/node-matchers.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+bool NodeMatcher::IsComparison() const {
+  return IrOpcode::IsComparisonOpcode(opcode());
+}
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8