[turbofan] Deopt support for escape analysis

src/compiler/instruction-selector-impl.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_IMPL_H_
 #define V8_COMPILER_INSTRUCTION_SELECTOR_IMPL_H_
 
 #include "src/compiler/instruction.h"
 #include "src/compiler/instruction-selector.h"
 #include "src/compiler/linkage.h"
@@ skipping 175 matching lines @@
   InstructionOperand TempLocation(LinkageLocation location, MachineType type) {
     return ToUnallocatedOperand(location, type,
                                 sequence()->NextVirtualRegister());
   }
 
   InstructionOperand Label(BasicBlock* block) {
     return sequence()->AddImmediate(
         Constant(RpoNumber::FromInt(block->rpo_number())));
   }
 
+  InstructionOperand UseForDeopt(Node* node, FrameStateInputKind kind) {
+    switch (node->opcode()) {
+      case IrOpcode::kInt32Constant:
+      case IrOpcode::kNumberConstant:
+      case IrOpcode::kFloat32Constant:
+      case IrOpcode::kFloat64Constant:
+      case IrOpcode::kHeapConstant:
+        return UseImmediate(node);
+      default:
+        switch (kind) {
+          case FrameStateInputKind::kStackSlot:
+            return UseUniqueSlot(node);
+          case FrameStateInputKind::kAny:
+            return UseAny(node);
+        }
+    }
+    UNREACHABLE();
+  }
+
  protected:
   InstructionSelector* selector() const { return selector_; }
   InstructionSequence* sequence() const { return selector()->sequence(); }
   Zone* zone() const { return selector()->instruction_zone(); }
 
  private:
   int GetVReg(Node* node) const { return selector_->GetVirtualRegister(node); }
 
   static Constant ToConstant(const Node* node) {
     switch (node->opcode()) {
@@ skipping 153 matching lines @@
   Node* result_;             // Only valid if mode_ == kFlags_set.
   BasicBlock* true_block_;   // Only valid if mode_ == kFlags_branch.
   BasicBlock* false_block_;  // Only valid if mode_ == kFlags_branch.
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INSTRUCTION_SELECTOR_IMPL_H_