[turbofan] Lower "-0.0 - x" in the MachineOperatorReducer.

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/type-hints.h"
 #include "src/machine-type.h"
@@ skipping 376 matching lines @@
 Matcher<Node*> IsTruncateFloat64ToWord32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsChangeFloat64ToInt32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsChangeFloat64ToUint32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsChangeInt32ToFloat64(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsChangeInt32ToInt64(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsChangeUint32ToFloat64(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsChangeUint32ToUint64(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsTruncateFloat64ToFloat32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsTruncateInt64ToInt32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsFloat32Abs(const Matcher<Node*>& input_matcher);
+Matcher<Node*> IsFloat32Neg(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsFloat32Equal(const Matcher<Node*>& lhs_matcher,
                               const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsFloat32LessThan(const Matcher<Node*>& lhs_matcher,
                                  const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsFloat32LessThanOrEqual(const Matcher<Node*>& lhs_matcher,
                                         const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsFloat64Max(const Matcher<Node*>& lhs_matcher,
                             const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsFloat64Min(const Matcher<Node*>& lhs_matcher,
                             const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsFloat64Sub(const Matcher<Node*>& lhs_matcher,
                             const Matcher<Node*>& rhs_matcher);
 Matcher<Node*> IsFloat64Abs(const Matcher<Node*>& input_matcher);
+Matcher<Node*> IsFloat64Neg(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsFloat64Sqrt(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsFloat64RoundDown(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsFloat64RoundTruncate(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsFloat64RoundTiesAway(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsFloat64ExtractLowWord32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsFloat64ExtractHighWord32(const Matcher<Node*>& input_matcher);
 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);
@@ skipping 35 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_