Revert of Remove obsolete V8_INFINITY macro.

test/cctest/compiler/test-run-machops.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 <cmath>
 #include <functional>
 #include <limits>
 
 #include "src/base/bits.h"
 #include "src/codegen.h"
@@ skipping 2892 matching lines @@
 
 
 TEST(RunFloat64Binop) {
   RawMachineAssemblerTester<int32_t> m;
   double result;
 
   const Operator* ops[] = {m.machine()->Float64Add(), m.machine()->Float64Sub(),
                            m.machine()->Float64Mul(), m.machine()->Float64Div(),
                            m.machine()->Float64Mod(), NULL};
 
-  double inf = std::numeric_limits<double>::infinity();
+  double inf = V8_INFINITY;
   const Operator* inputs[] = {
       m.common()->Float64Constant(0),     m.common()->Float64Constant(1),
       m.common()->Float64Constant(1),     m.common()->Float64Constant(0),
       m.common()->Float64Constant(0),     m.common()->Float64Constant(-1),
       m.common()->Float64Constant(-1),    m.common()->Float64Constant(0),
       m.common()->Float64Constant(0.22),  m.common()->Float64Constant(-1.22),
       m.common()->Float64Constant(-1.22), m.common()->Float64Constant(0.22),
       m.common()->Float64Constant(inf),   m.common()->Float64Constant(0.22),
       m.common()->Float64Constant(inf),   m.common()->Float64Constant(-inf),
       NULL};
@@ skipping 933 matching lines @@
       break;
     default:
       UNREACHABLE();
   }
   m->Return(cmp);
   return expected;
 }
 
 
 TEST(RunFloat64Compare) {
-  double inf = std::numeric_limits<double>::infinity();
+  double inf = V8_INFINITY;
   // All pairs (a1, a2) are of the form a1 < a2.
   double inputs[] = {0.0,  1.0,  -1.0, 0.22, -1.22, 0.22,
                      -inf, 0.22, 0.22, inf,  -inf,  inf};
 
   for (int test = 0; test < kFloat64CompareHelperTestCases; test++) {
     for (int node_type = 0; node_type < kFloat64CompareHelperNodeType;
          node_type++) {
       for (size_t input = 0; input < arraysize(inputs); input += 2) {
         RawMachineAssemblerTester<int32_t> m;
         int expected = Float64CompareHelper(&m, test, node_type, inputs[input],
@@ skipping 804 matching lines @@
       m.Float64RoundTiesAway(m.LoadFromPointer(&input, kMachFloat64)));
   m.Return(m.Int32Constant(0));
   for (size_t i = 0; i < arraysize(kValues); ++i) {
     input = kValues[i];
     CHECK_EQ(0, m.Call());
     double expected = round(kValues[i]);
     CHECK_EQ(expected, result);
   }
 }
 #endif  // V8_TURBOFAN_TARGET