[turbofan] Fix ControlFlowOptimizer to also handle non-control nodes in the control chain.

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/machine-type.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ skipping 29 matching lines @@
 Matcher<Node*> IsMerge(const Matcher<Node*>& control0_matcher,
                        const Matcher<Node*>& control1_matcher,
                        const Matcher<Node*>& control2_matcher);
 Matcher<Node*> IsLoop(const Matcher<Node*>& control0_matcher,
                       const Matcher<Node*>& control1_matcher);
 Matcher<Node*> IsLoop(const Matcher<Node*>& control0_matcher,
                       const Matcher<Node*>& control1_matcher,
                       const Matcher<Node*>& control2_matcher);
 Matcher<Node*> IsIfTrue(const Matcher<Node*>& control_matcher);
 Matcher<Node*> IsIfFalse(const Matcher<Node*>& control_matcher);
+Matcher<Node*> IsIfSuccess(const Matcher<Node*>& control_matcher);
 Matcher<Node*> IsSwitch(const Matcher<Node*>& value_matcher,
                         const Matcher<Node*>& control_matcher);
 Matcher<Node*> IsIfValue(const Matcher<int32_t>& value_matcher,
                          const Matcher<Node*>& control_matcher);
 Matcher<Node*> IsIfDefault(const Matcher<Node*>& control_matcher);
 Matcher<Node*> IsValueEffect(const Matcher<Node*>& value_matcher);
 Matcher<Node*> IsFinish(const Matcher<Node*>& value_matcher,
                         const Matcher<Node*>& effect_matcher);
 Matcher<Node*> IsReturn(const Matcher<Node*>& value_matcher,
                         const Matcher<Node*>& effect_matcher,
@@ skipping 154 matching lines @@
                           const Matcher<Node*>& effect_matcher,
                           const Matcher<Node*>& control_matcher);
 Matcher<Node*> IsNumberToInt32(const Matcher<Node*>& input_matcher);
 Matcher<Node*> IsNumberToUint32(const Matcher<Node*>& input_matcher);
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_UNITTESTS_COMPILER_NODE_TEST_UTILS_H_