[turbofan] Introduce DeoptimizeIf And DeoptimizeUnless common operators.

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 82 matching lines @@
                     InstructionOperand c, InstructionOperand d,
                     InstructionOperand e, InstructionOperand f,
                     size_t temp_count = 0, InstructionOperand* temps = nullptr);
   Instruction* Emit(InstructionCode opcode, size_t output_count,
                     InstructionOperand* outputs, size_t input_count,
                     InstructionOperand* inputs, size_t temp_count = 0,
                     InstructionOperand* temps = nullptr);
   Instruction* Emit(Instruction* instr);
 
   // ===========================================================================
+  // ===== Architecture-independent deoptimization exit emission methods. ======
+  // ===========================================================================
+
+  Instruction* EmitDeoptimize(InstructionCode opcode, InstructionOperand output,
+                              InstructionOperand a, InstructionOperand b,
+                              Node* frame_state);
+  Instruction* EmitDeoptimize(InstructionCode opcode, size_t output_count,
+                              InstructionOperand* outputs, size_t input_count,
+                              InstructionOperand* inputs, Node* frame_state);
+
+  // ===========================================================================
   // ============== Architecture-independent CPU feature methods. ==============
   // ===========================================================================
 
   class Features final {
    public:
     Features() : bits_(0) {}
     explicit Features(unsigned bits) : bits_(bits) {}
     explicit Features(CpuFeature f) : bits_(1u << f) {}
     Features(CpuFeature f1, CpuFeature f2) : bits_((1u << f1) | (1u << f2)) {}
 
@@ skipping 123 matching lines @@
 
   void VisitFinishRegion(Node* node);
   void VisitGuard(Node* node);
   void VisitParameter(Node* node);
   void VisitIfException(Node* node);
   void VisitOsrValue(Node* node);
   void VisitPhi(Node* node);
   void VisitProjection(Node* node);
   void VisitConstant(Node* node);
   void VisitCall(Node* call, BasicBlock* handler = nullptr);
+  void VisitDeoptimizeIf(Node* node);
+  void VisitDeoptimizeUnless(Node* node);
   void VisitTailCall(Node* call);
   void VisitGoto(BasicBlock* target);
   void VisitBranch(Node* input, BasicBlock* tbranch, BasicBlock* fbranch);
   void VisitSwitch(Node* node, const SwitchInfo& sw);
   void VisitDeoptimize(DeoptimizeKind kind, Node* value);
   void VisitReturn(Node* ret);
   void VisitThrow(Node* value);
 
   void EmitPrepareArguments(ZoneVector<compiler::PushParameter>* arguments,
                             const CallDescriptor* descriptor, Node* node);
@@ skipping 23 matching lines @@
   IntVector virtual_registers_;
   InstructionScheduler* scheduler_;
   Frame* frame_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INSTRUCTION_SELECTOR_H_