There are only 2 language modes, not 3

test/unittests/compiler/js-typed-lowering-unittest.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/code-factory.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/machine-operator.h"
@@ skipping 47 matching lines @@
 
 
 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()};
 
-
-STATIC_ASSERT(LANGUAGE_END == 3);
+STATIC_ASSERT(LANGUAGE_END == 2);
 const LanguageMode kLanguageModes[] = {SLOPPY, STRICT};
 
 }  // namespace
 
 
 class JSTypedLoweringTest : public TypedGraphTest {
  public:
   JSTypedLoweringTest()
       : TypedGraphTest(3), javascript_(zone()), deps_(isolate(), zone()) {}
   ~JSTypedLoweringTest() override {}
@@ skipping 1143 matching lines @@
                                         EmptyFrameState(), effect, control));
   ASSERT_TRUE(r.Changed());
   EXPECT_THAT(r.replacement(), IsSpeculativeNumberBitwiseXor(
                                    NumberOperationHint::kNumberOrOddball, lhs,
                                    rhs, effect, control));
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8