[turbofan] Check instruction input/output count limits in instruction selector.

src/compiler/instruction-selector.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_INSTRUCTION_SELECTOR_H_
 #define V8_COMPILER_INSTRUCTION_SELECTOR_H_
 
 #include <map>
 
 #include "src/compiler/common-operator.h"
@@ skipping 43 matching lines @@
       Zone* zone, size_t node_count, Linkage* linkage,
       InstructionSequence* sequence, Schedule* schedule,
       SourcePositionTable* source_positions, Frame* frame,
       SourcePositionMode source_position_mode = kCallSourcePositions,
       Features features = SupportedFeatures(),
       EnableScheduling enable_scheduling = FLAG_turbo_instruction_scheduling
                                                ? kEnableScheduling
                                                : kDisableScheduling);
 
   // Visit code for the entire graph with the included schedule.
-  void SelectInstructions();
+  bool SelectInstructions();
 
   void StartBlock(RpoNumber rpo);
   void EndBlock(RpoNumber rpo);
   void AddInstruction(Instruction* instr);
 
   // ===========================================================================
   // ============= Architecture-independent code emission methods. =============
   // ===========================================================================
 
   Instruction* Emit(InstructionCode opcode, InstructionOperand output,
@@ skipping 250 matching lines @@
   bool CanProduceSignalingNaN(Node* node);
 
   // ===========================================================================
 
   Schedule* schedule() const { return schedule_; }
   Linkage* linkage() const { return linkage_; }
   InstructionSequence* sequence() const { return sequence_; }
   Zone* instruction_zone() const { return sequence()->zone(); }
   Zone* zone() const { return zone_; }
 
+  void set_instruction_selection_failed() {
+    instruction_selection_failed_ = true;
+  }
+  bool instruction_selection_failed() { return instruction_selection_failed_; }
+
   // ===========================================================================
 
   Zone* const zone_;
   Linkage* const linkage_;
   InstructionSequence* const sequence_;
   SourcePositionTable* const source_positions_;
   SourcePositionMode const source_position_mode_;
   Features features_;
   Schedule* const schedule_;
   BasicBlock* current_block_;
   ZoneVector<Instruction*> instructions_;
   BoolVector defined_;
   BoolVector used_;
   IntVector effect_level_;
   IntVector virtual_registers_;
   IntVector virtual_register_rename_;
   InstructionScheduler* scheduler_;
   EnableScheduling enable_scheduling_;
   Frame* frame_;
+  bool instruction_selection_failed_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INSTRUCTION_SELECTOR_H_