MIPS: Fix compilation failure for GCC5

test/unittests/compiler/typed-optimization-unittest.cc

 // Copyright 2016 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/typed-optimization.h"
 #include "src/code-factory.h"
 #include "src/compilation-dependencies.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-operator.h"
@@ skipping 38 matching lines @@
     8.80006e+30,   1.4446e+45,    1.12164e+54,   2.48188e+89,
     6.71121e+102,  3.074e+112,    4.9699e+152,   5.58383e+166,
     4.30654e+172,  7.08824e+185,  9.6586e+214,   2.028e+223,
     6.63277e+243,  1.56192e+261,  1.23202e+269,  5.72883e+289,
     8.5798e+290,   1.40256e+294,  1.79769e+308,  V8_INFINITY};
 
 const double kIntegerValues[] = {-V8_INFINITY, INT_MIN, -1000.0,  -42.0,
                                  -1.0,         0.0,     1.0,      42.0,
                                  1000.0,       INT_MAX, UINT_MAX, V8_INFINITY};
 
-Type* const kJSTypes[] = {Type::Undefined(), Type::Null(),   Type::Boolean(),
-                          Type::Number(),    Type::String(), Type::Object()};
-
 }  // namespace
 
 class TypedOptimizationTest : public TypedGraphTest {
  public:
   TypedOptimizationTest()
       : TypedGraphTest(3), javascript_(zone()), deps_(isolate(), zone()) {}
   ~TypedOptimizationTest() override {}
 
  protected:
   Reduction Reduce(Node* node) {
@@ skipping 148 matching lines @@
   Node* context = Parameter(Type::Any(), 1);
   Reduction r = Reduce(graph()->NewNode(
       javascript()->ToBoolean(ToBooleanHint::kAny), input, context));
   ASSERT_TRUE(r.Changed());
   EXPECT_THAT(r.replacement(), IsTrueConstant());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8