[turbofan] Make IfException projections consume effects.

src/compiler/ast-graph-builder.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/ast-graph-builder.h"
 
 #include "src/compiler.h"
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/js-type-feedback.h"
@@ skipping 3827 matching lines @@
       }
       // Add implicit exception continuation for throwing nodes.
       if (!result->op()->HasProperty(Operator::kNoThrow) && inside_try_scope) {
         // Conservative prediction whether caught locally.
         IfExceptionHint hint = try_catch_nesting_level_ > 0
                                    ? IfExceptionHint::kLocallyCaught
                                    : IfExceptionHint::kLocallyUncaught;
         // Copy the environment for the success continuation.
         Environment* success_env = environment()->CopyForConditional();
         const Operator* op = common()->IfException(hint);
-        Node* on_exception = graph()->NewNode(op, result);
+        Node* effect = environment()->GetEffectDependency();
+        Node* on_exception = graph()->NewNode(op, effect, result);
         environment_->UpdateControlDependency(on_exception);
+        environment_->UpdateEffectDependency(on_exception);
         execution_control()->ThrowValue(on_exception);
         set_environment(success_env);
       }
       // Add implicit success continuation for throwing nodes.
       if (!result->op()->HasProperty(Operator::kNoThrow)) {
         const Operator* op = common()->IfSuccess();
         Node* on_success = graph()->NewNode(op, result);
         environment_->UpdateControlDependency(on_success);
       }
     }
@@ skipping 216 matching lines @@
     // Phi does not exist yet, introduce one.
     value = NewPhi(inputs, value, control);
     value->ReplaceInput(inputs - 1, other);
   }
   return value;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8