Reland "Initial switch to Chromium-style CHECK_* and DCHECK_* macros.".

test/cctest/compiler/codegen-tester.h

 // 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.
 
 #ifndef V8_CCTEST_COMPILER_CODEGEN_TESTER_H_
 #define V8_CCTEST_COMPILER_CODEGEN_TESTER_H_
 
 #include "src/v8.h"
 
 #include "src/compiler/instruction-selector.h"
@@ skipping 314 matching lines @@
 
  private:
   BinopGen<int32_t>* gen;
   int32_t input_a;
   int32_t input_b;
 
   void Run(RawMachineAssemblerTester<int32_t>* m);
   void RunLeft(RawMachineAssemblerTester<int32_t>* m);
   void RunRight(RawMachineAssemblerTester<int32_t>* m);
 };
+
+// TODO(bmeurer): Drop this crap once we switch to GTest/Gmock.
+static inline void CheckDoubleEq(volatile double x, volatile double y) {
+  if (std::isnan(x)) {
+    CHECK(std::isnan(y));
+  } else {
+    CHECK_EQ(x, y);
+  }
+}
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CCTEST_COMPILER_CODEGEN_TESTER_H_