Unify SoftDeoptimize and Deoptimize hydrogen instructions

src/hydrogen-instructions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef V8_HYDROGEN_INSTRUCTIONS_H_
 #define V8_HYDROGEN_INSTRUCTIONS_H_
 
 #include "v8.h"
 
 #include "allocation.h"
 #include "code-stubs.h"
 #include "data-flow.h"
+#include "deoptimizer.h"
 #include "small-pointer-list.h"
 #include "string-stream.h"
 #include "v8conversions.h"
 #include "v8utils.h"
 #include "zone.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
@@ skipping 109 matching lines @@
   V(PushArgument)                              \
   V(Random)                                    \
   V(RegExpLiteral)                             \
   V(Return)                                    \
   V(Ror)                                       \
   V(Sar)                                       \
   V(SeqStringSetChar)                          \
   V(Shl)                                       \
   V(Shr)                                       \
   V(Simulate)                                  \
-  V(SoftDeoptimize)                            \
   V(StackCheck)                                \
   V(StoreContextSlot)                          \
   V(StoreGlobalCell)                           \
   V(StoreGlobalGeneric)                        \
   V(StoreKeyed)                                \
   V(StoreKeyedGeneric)                         \
   V(StoreNamedField)                           \
   V(StoreNamedGeneric)                         \
   V(StringAdd)                                 \
   V(StringCharCodeAt)                          \
@@ skipping 1310 matching lines @@
                      HValue* related_value)
       : relation_(relation) {
     SetOperandAt(0, constrained_value);
     SetOperandAt(1, related_value);
   }
 
   NumericRelation relation_;
 };
 
 
-// We insert soft-deoptimize when we hit code with unknown typefeedback,
-// so that we get a chance of re-optimizing with useful typefeedback.
-// HSoftDeoptimize does not end a basic block as opposed to HDeoptimize.
-class HSoftDeoptimize: public HTemplateInstruction<0> {
+class HDeoptimize: public HTemplateInstruction<0> {
  public:
+  explicit HDeoptimize(Deoptimizer::BailoutType type) : type_(type) {}
+
   virtual Representation RequiredInputRepresentation(int index) {
     return Representation::None();
   }
 
-  DECLARE_CONCRETE_INSTRUCTION(SoftDeoptimize)
+  Deoptimizer::BailoutType type() { return type_; }
+
+  DECLARE_CONCRETE_INSTRUCTION(Deoptimize)
+
+ private:
+  Deoptimizer::BailoutType type_;
 };
 
 
 // Inserts an int3/stop break instruction for debugging purposes.
 class HDebugBreak: public HTemplateInstruction<0> {
  public:
   virtual Representation RequiredInputRepresentation(int index) {
     return Representation::None();
   }
 
   DECLARE_CONCRETE_INSTRUCTION(DebugBreak)
 };
 
 
-class HDeoptimize: public HControlInstruction {
- public:
-  HDeoptimize(int environment_length,
-              int first_local_index,
-              int first_expression_index,
-              Zone* zone)
-      : values_(environment_length, zone),
-        first_local_index_(first_local_index),
-        first_expression_index_(first_expression_index) { }
-
-  virtual Representation RequiredInputRepresentation(int index) {
-    return Representation::None();
-  }
-
-  virtual int OperandCount() { return values_.length(); }
-  virtual HValue* OperandAt(int index) const { return values_[index]; }
-  virtual void PrintDataTo(StringStream* stream);
-
-  virtual int SuccessorCount() { return 0; }
-  virtual HBasicBlock* SuccessorAt(int i) {
-    UNREACHABLE();
-    return NULL;
-  }
-  virtual void SetSuccessorAt(int i, HBasicBlock* block) {
-    UNREACHABLE();
-  }
-
-  void AddEnvironmentValue(HValue* value, Zone* zone) {
-    values_.Add(NULL, zone);
-    SetOperandAt(values_.length() - 1, value);
-  }
-  int first_local_index() { return first_local_index_; }
-  int first_expression_index() { return first_expression_index_; }
-
-  DECLARE_CONCRETE_INSTRUCTION(Deoptimize)
-
-  enum UseEnvironment {
-    kNoUses,
-    kUseAll
-  };
-
- protected:
-  virtual void InternalSetOperandAt(int index, HValue* value) {
-    values_[index] = value;
-  }
-
- private:
-  ZoneList<HValue*> values_;
-  int first_local_index_;
-  int first_expression_index_;
-};
-
-
 class HGoto: public HTemplateControlInstruction<1, 0> {
  public:
   explicit HGoto(HBasicBlock* target) {
     SetSuccessorAt(0, target);
   }
 
   virtual Representation RequiredInputRepresentation(int index) {
     return Representation::None();
   }
 
@@ skipping 5111 matching lines @@
   virtual bool IsDeletable() const { return true; }
 };
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_