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

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index a919a1d3bec6adf39acd0dac337cf32c869a3f99..0aa79a4b0ea150d36a92cb92e570f0128282e670 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -179,7 +179,8 @@ class LCodeGen;
   V(CheckMapValue)                              \
   V(LoadFieldByIndex)                           \
   V(DateField)                                  \
-  V(WrapReceiver)
+  V(WrapReceiver)                               \
+  V(Drop)
 
 
 #define DECLARE_CONCRETE_INSTRUCTION(type, mnemonic)              \
@@ -534,9 +535,15 @@ class LArgumentsLength: public LTemplateInstruction<1, 1, 0> {
 
 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_;
 };
 
 
@@ -1378,6 +1385,19 @@ class LPushArgument: public LTemplateInstruction<0, 1, 0> {
 };
 
 
+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")