[turbofan] Change End to take a variable number of inputs.

src/compiler/ast-graph-builder.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_COMPILER_AST_GRAPH_BUILDER_H_
 #define V8_COMPILER_AST_GRAPH_BUILDER_H_
 
 #include "src/ast.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/liveness-analyzer.h"
@@ skipping 78 matching lines @@
   SetOncePointer<Node> function_closure_;
   SetOncePointer<Node> function_context_;
 
   // Tracks how many try-blocks are currently entered.
   int try_nesting_level_;
 
   // Temporary storage for building node input lists.
   int input_buffer_size_;
   Node** input_buffer_;
 
-  // Merge of all control nodes that exit the function body.
-  Node* exit_control_;
+  // Control nodes that exit the function body.
+  ZoneVector<Node*> exit_controls_;
 
   // Result of loop assignment analysis performed before graph creation.
   LoopAssignmentAnalysis* loop_assignment_analysis_;
 
   // Cache for StateValues nodes for frame states.
   StateValuesCache state_values_cache_;
 
   // Analyzer of local variable liveness.
   LivenessAnalyzer liveness_analyzer_;
 
@@ skipping 12 matching lines @@
   CommonOperatorBuilder* common() const { return jsgraph_->common(); }
   CompilationInfo* info() const { return info_; }
   LanguageMode language_mode() const;
   JSGraph* jsgraph() { return jsgraph_; }
   Graph* graph() { return jsgraph_->graph(); }
   Zone* graph_zone() { return graph()->zone(); }
   JSOperatorBuilder* javascript() { return jsgraph_->javascript(); }
   ZoneVector<Handle<Object>>* globals() { return &globals_; }
   Scope* current_scope() const;
   Node* current_context() const;
-  Node* exit_control() const { return exit_control_; }
   LivenessAnalyzer* liveness_analyzer() { return &liveness_analyzer_; }
 
   void set_environment(Environment* env) { environment_ = env; }
   void set_ast_context(AstContext* ctx) { ast_context_ = ctx; }
   void set_execution_control(ControlScope* ctrl) { execution_control_ = ctrl; }
   void set_execution_context(ContextScope* ctx) { execution_context_ = ctx; }
-  void set_exit_control(Node* exit) { exit_control_ = exit; }
 
   // Create the main graph body by visiting the AST.
   void CreateGraphBody(bool stack_check);
 
   // Create the node that represents the outer context of the function.
   void CreateFunctionContext(bool constant_context);
 
   // Get or create the node that represents the outer function closure.
   Node* GetFunctionClosure();
 
@@ skipping 356 matching lines @@
 
   // Prepare environment to be used as loop header.
   void PrepareForLoop(BitVector* assigned, bool is_osr = false);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_AST_GRAPH_BUILDER_H_