Merge up to 8597 to experimental/gc from the bleeding edge.

src/arm/lithium-codegen-arm.h

Index: src/arm/lithium-codegen-arm.h
===================================================================
--- src/arm/lithium-codegen-arm.h	(revision 8618)
+++ src/arm/lithium-codegen-arm.h	(working copy)
@@ -108,7 +108,7 @@
   void DoDeferredNumberTagI(LNumberTagI* instr);
   void DoDeferredTaggedToI(LTaggedToI* instr);
   void DoDeferredMathAbsTaggedHeapNumber(LUnaryMathOperation* instr);
-  void DoDeferredStackCheck(LGoto* instr);
+  void DoDeferredStackCheck(LStackCheck* instr);
   void DoDeferredStringCharCodeAt(LStringCharCodeAt* instr);
   void DoDeferredStringCharFromCode(LStringCharFromCode* instr);
   void DoDeferredLInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr,
@@ -148,7 +148,7 @@
   HGraph* graph() const { return chunk_->graph(); }
 
   Register scratch0() { return r9; }
-  DwVfpRegister double_scratch0() { return d0; }
+  DwVfpRegister double_scratch0() { return d15; }
 
   int GetNextEmittedBlock(int block);
   LInstruction* GetNextInstruction();
@@ -261,11 +261,12 @@
   }
 
   static Condition TokenToCondition(Token::Value op, bool is_unsigned);
-  void EmitGoto(int block, LDeferredCode* deferred_stack_check = NULL);
+  void EmitGoto(int block);
   void EmitBranch(int left_block, int right_block, Condition cc);
   void EmitCmpI(LOperand* left, LOperand* right);
   void EmitNumberUntagD(Register input,
                         DoubleRegister result,
+                        bool deoptimize_on_undefined,
                         LEnvironment* env);
 
   // Emits optimized code for typeof x == "y".  Modifies input register.
@@ -279,7 +280,6 @@
   // true and false label should be made, to optimize fallthrough.
   Condition EmitIsObject(Register input,
                          Register temp1,
-                         Register temp2,
                          Label* is_not_object,
                          Label* is_object);