[turbofan] Introduce dedicated NumberToBoolean operator.

test/unittests/compiler/node-test-utils.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_UNITTESTS_COMPILER_NODE_TEST_UTILS_H_
 #define V8_UNITTESTS_COMPILER_NODE_TEST_UTILS_H_
 
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/simplified-operator.h"
 #include "src/machine-type.h"
@@ skipping 409 matching lines @@
 Matcher<Node*> IsFloat64InsertLowWord32(const Matcher<Node*>& lhs_matcher,
                                         const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsFloat64InsertHighWord32(const Matcher<Node*>& lhs_matcher,
                                          const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsToNumber(const Matcher<Node*>& base_matcher,
                           const Matcher<Node*>& context_matcher,
                           const Matcher<Node*>& effect_matcher,
                           const Matcher<Node*>& control_matcher);
 Matcher<Node*> IsLoadContext(const Matcher<ContextAccess>& access_matcher,
                              const Matcher<Node*>& context_matcher);
+Matcher<Node*> IsNumberToBoolean(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsNumberToInt32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsNumberToUint32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsParameter(const Matcher<int> index_matcher);
 Matcher<Node*> IsLoadFramePointer();
 Matcher<Node*> IsLoadParentFramePointer();
 Matcher<Node*> IsPlainPrimitiveToNumber(const Matcher<Node*>& input_matcher);
 
 Matcher<Node*> IsInt32PairAdd(const Matcher<Node*>& a_matcher,
                               const Matcher<Node*>& b_matcher,
                               const Matcher<Node*>& c_matcher,
@@ skipping 19 matching lines @@
                                const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsWord32ReverseBytes(const Matcher<Node*>& value_matcher);
 
 Matcher<Node*> IsStackSlot();
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_UNITTESTS_COMPILER_NODE_TEST_UTILS_H_