[turbofan] Introduce ToBooleanHints on ToBoolean operators.

test/unittests/compiler/js-operator-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/compiler/js-operator.h"
 #include "src/compiler/opcodes.h"
 #include "src/compiler/operator.h"
 #include "src/compiler/operator-properties.h"
 #include "test/unittests/test-utils.h"
 
@@ skipping 53 matching lines @@
   {                                                                          \
     &JSOperatorBuilder::Name, IrOpcode::kJS##Name, properties,               \
         value_input_count, frame_state_input_count, effect_input_count,      \
         control_input_count, value_output_count, effect_output_count,        \
         control_output_count                                                 \
   }
     SHARED(Equal, Operator::kNoProperties, 2, 1, 1, 1, 1, 1, 2),
     SHARED(NotEqual, Operator::kNoProperties, 2, 1, 1, 1, 1, 1, 2),
     SHARED(StrictEqual, Operator::kNoThrow, 2, 0, 1, 1, 1, 1, 0),
     SHARED(StrictNotEqual, Operator::kNoThrow, 2, 0, 1, 1, 1, 1, 0),
-    SHARED(ToBoolean, Operator::kEliminatable, 1, 0, 1, 0, 1, 1, 0),
     SHARED(ToNumber, Operator::kNoProperties, 1, 1, 1, 1, 1, 1, 2),
     SHARED(ToString, Operator::kNoProperties, 1, 1, 1, 1, 1, 1, 2),
     SHARED(ToName, Operator::kNoProperties, 1, 1, 1, 1, 1, 1, 2),
     SHARED(ToObject, Operator::kNoProperties, 1, 1, 1, 1, 1, 1, 2),
     SHARED(Yield, Operator::kNoProperties, 1, 0, 1, 1, 1, 1, 2),
     SHARED(Create, Operator::kEliminatable, 2, 1, 1, 0, 1, 1, 0),
     SHARED(HasProperty, Operator::kNoProperties, 2, 1, 1, 1, 1, 1, 2),
     SHARED(TypeOf, Operator::kEliminatable, 1, 0, 1, 0, 1, 1, 0),
     SHARED(InstanceOf, Operator::kNoProperties, 2, 1, 1, 1, 1, 1, 2),
     SHARED(CreateWithContext, Operator::kNoProperties, 2, 1, 1, 1, 1, 1, 2),
@@ skipping 177 matching lines @@
 INSTANTIATE_TEST_CASE_P(
     JSOperatorTest, JSSharedOperatorWithLanguageModeTest,
     ::testing::Combine(::testing::ValuesIn(kLanguageModes),
                        ::testing::ValuesIn(kSharedOperatorsWithLanguageMode)));
 
 #endif  // GTEST_HAS_COMBINE
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8