[turbofan] Do not force stack slot for eager deopt inputs.

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"
 #include "src/compiler/instruction.h"
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/node.h"
 #include "src/zone-containers.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // Forward declarations.
 class BasicBlock;
 struct CallBuffer;  // TODO(bmeurer): Remove this.
 class FlagsContinuation;
 class Linkage;
+class OperandGenerator;
 struct SwitchInfo;
 
 typedef ZoneVector<InstructionOperand> InstructionOperandVector;
 
 
 // Instruction selection generates an InstructionSequence for a given Schedule.
 class InstructionSelector final {
  public:
   // Forward declarations.
   class Features;
@@ skipping 131 matching lines @@
   // Initialize the call buffer with the InstructionOperands, nodes, etc,
   // corresponding
   // to the inputs and outputs of the call.
   // {call_code_immediate} to generate immediate operands to calls of code.
   // {call_address_immediate} to generate immediate operands to address calls.
   void InitializeCallBuffer(Node* call, CallBuffer* buffer,
                             bool call_code_immediate,
                             bool call_address_immediate);
 
   FrameStateDescriptor* GetFrameStateDescriptor(Node* node);
+
+  enum class FrameStateInputKind { kAny, kStackSlot };
   void AddFrameStateInputs(Node* state, InstructionOperandVector* inputs,
-                           FrameStateDescriptor* descriptor);
+                           FrameStateDescriptor* descriptor,
+                           FrameStateInputKind kind);
+  static InstructionOperand OperandForDeopt(OperandGenerator* g, Node* input,
+                                            FrameStateInputKind kind);
 
   // ===========================================================================
   // ============= Architecture-specific graph covering methods. ===============
   // ===========================================================================
 
   // Visit nodes in the given block and generate code.
   void VisitBlock(BasicBlock* block);
 
   // Visit the node for the control flow at the end of the block, generating
   // code if necessary.
@@ skipping 44 matching lines @@
   BoolVector defined_;
   BoolVector used_;
   IntVector virtual_registers_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INSTRUCTION_SELECTOR_H_