Reland arguments access support for inlined functions (r11109,r11118).

src/arm/lithium-arm.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 161 matching lines @@
   V(Typeof)                                     \
   V(TypeofIsAndBranch)                          \
   V(UnaryMathOperation)                         \
   V(UnknownOSRValue)                            \
   V(ValueOf)                                    \
   V(ForInPrepareMap)                            \
   V(ForInCacheArray)                            \
   V(CheckMapValue)                              \
   V(LoadFieldByIndex)                           \
   V(DateField)                                  \
-  V(WrapReceiver)
+  V(WrapReceiver)                               \
+  V(Drop)
 
 
 #define DECLARE_CONCRETE_INSTRUCTION(type, mnemonic)              \
   virtual Opcode opcode() const { return LInstruction::k##type; } \
   virtual void CompileToNative(LCodeGen* generator);              \
   virtual const char* Mnemonic() const { return mnemonic; }       \
   static L##type* cast(LInstruction* instr) {                     \
     ASSERT(instr->Is##type());                                    \
     return reinterpret_cast<L##type*>(instr);                     \
   }
@@ skipping 334 matching lines @@
   explicit LArgumentsLength(LOperand* elements) {
     inputs_[0] = elements;
   }
 
   DECLARE_CONCRETE_INSTRUCTION(ArgumentsLength, "arguments-length")
 };
 
 
 class LArgumentsElements: public LTemplateInstruction<1, 0, 0> {
  public:
-  LArgumentsElements() { }
+  explicit LArgumentsElements(bool from_inlined)

[Kevin Millikin (Chromium), 2012/04/11 12:54:41]

The flag could be gotten from the hydrogen_value().

+      : from_inlined_(from_inlined) { }
+
+  bool from_inlined() const { return from_inlined_; }
 
   DECLARE_CONCRETE_INSTRUCTION(ArgumentsElements, "arguments-elements")
+
+ private:
+  bool from_inlined_;
 };
 
 
 class LModI: public LTemplateInstruction<1, 2, 3> {
  public:
   // Used when the right hand is a constant power of 2.
   LModI(LOperand* left,
         LOperand* right) {
     inputs_[0] = left;
     inputs_[1] = right;
@@ skipping 821 matching lines @@
 class LPushArgument: public LTemplateInstruction<0, 1, 0> {
  public:
   explicit LPushArgument(LOperand* value) {
     inputs_[0] = value;
   }
 
   DECLARE_CONCRETE_INSTRUCTION(PushArgument, "push-argument")
 };
 
 
+class LDrop: public LTemplateInstruction<0, 0, 0> {
+ public:
+  explicit LDrop(int count) : count_(count) { }
+
+  int count() const { return count_; }
+
+  DECLARE_CONCRETE_INSTRUCTION(Drop, "drop")
+
+ private:
+  int count_;
+};
+
+
 class LThisFunction: public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(ThisFunction, "this-function")
   DECLARE_HYDROGEN_ACCESSOR(ThisFunction)
 };
 
 
 class LContext: public LTemplateInstruction<1, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(Context, "context")
@@ skipping 1012 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_LITHIUM_ARM_H_