[turbofan] Move TryCloneBranch in the EffectControlLinearizer pass.

test/unittests/compiler/control-flow-optimizer-unittest.cc

 // Copyright 2015 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/control-flow-optimizer.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/machine-operator.h"
 #include "test/unittests/compiler/graph-unittest.h"
 #include "test/unittests/compiler/node-test-utils.h"
 #include "testing/gmock-support.h"
@@ skipping 78 matching lines @@
   Optimize();
   Capture<Node*> switch_capture;
   EXPECT_THAT(
       end(),
       IsEnd(IsMerge(IsIfValue(0, CaptureEq(&switch_capture)),
                     IsIfValue(1, CaptureEq(&switch_capture)),
                     IsIfDefault(AllOf(CaptureEq(&switch_capture),
                                       IsSwitch(index, IsIfSuccess(index)))))));
 }
 
-
-TEST_F(ControlFlowOptimizerTest, CloneBranch) {
-  Node* cond0 = Parameter(0);
-  Node* cond1 = Parameter(1);
-  Node* cond2 = Parameter(2);
-  Node* branch0 = graph()->NewNode(common()->Branch(), cond0, start());
-  Node* control1 = graph()->NewNode(common()->IfTrue(), branch0);
-  Node* control2 = graph()->NewNode(common()->IfFalse(), branch0);
-  Node* merge0 = graph()->NewNode(common()->Merge(2), control1, control2);
-  Node* phi0 = graph()->NewNode(common()->Phi(MachineRepresentation::kBit, 2),
-                                cond1, cond2, merge0);
-  Node* branch = graph()->NewNode(common()->Branch(), phi0, merge0);
-  Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
-  Node* if_false = graph()->NewNode(common()->IfFalse(), branch);
-  Node* merge = graph()->NewNode(common()->Merge(2), if_true, if_false);
-  graph()->SetEnd(graph()->NewNode(common()->End(1), merge));
-  Optimize();
-  Capture<Node*> branch1_capture, branch2_capture;
-  EXPECT_THAT(
-      end(),
-      IsEnd(IsMerge(IsMerge(IsIfTrue(CaptureEq(&branch1_capture)),
-                            IsIfTrue(CaptureEq(&branch2_capture))),
-                    IsMerge(IsIfFalse(AllOf(CaptureEq(&branch1_capture),
-                                            IsBranch(cond1, control1))),
-                            IsIfFalse(AllOf(CaptureEq(&branch2_capture),
-                                            IsBranch(cond2, control2)))))));
-}
-
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8