[compiler] Remove obsolete JSYield operator.

src/compiler/verifier.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/verifier.h"
 
 #include <algorithm>
 #include <deque>
 #include <queue>
 #include <sstream>
@@ skipping 583 matching lines @@
       break;
     }
 
     case IrOpcode::kJSCallConstruct:
     case IrOpcode::kJSConvertReceiver:
       // Type is Receiver.
       CheckUpperIs(node, Type::Receiver());
       break;
     case IrOpcode::kJSCallFunction:
     case IrOpcode::kJSCallRuntime:
-    case IrOpcode::kJSYield:
       // Type can be anything.
       CheckUpperIs(node, Type::Any());
       break;
 
     case IrOpcode::kJSForInPrepare: {
       // TODO(bmeurer): What are the constraints on thse?
       CheckUpperIs(node, Type::Any());
       break;
     }
     case IrOpcode::kJSForInDone: {
@@ skipping 747 matching lines @@
          replacement->op()->EffectOutputCount() > 0);
   DCHECK(!NodeProperties::IsFrameStateEdge(edge) ||
          replacement->opcode() == IrOpcode::kFrameState);
 }
 
 #endif  // DEBUG
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8