Change the handling of stack check on backward branches

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 67483e4fdfbaf6573b70e78e05832912ecc53dc8..8b146486282b88721ab2151e8f40d575af738cd2 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -373,19 +373,16 @@ class LInstructionGap: public LGap {
 
 class LGoto: public LTemplateInstruction<0, 0, 0> {
  public:
-  LGoto(int block_id, bool include_stack_check = false)
-    : block_id_(block_id), include_stack_check_(include_stack_check) { }
+  explicit LGoto(int block_id) : block_id_(block_id) { }
 
   DECLARE_CONCRETE_INSTRUCTION(Goto, "goto")
   virtual void PrintDataTo(StringStream* stream);
   virtual bool IsControl() const { return true; }
 
   int block_id() const { return block_id_; }
-  bool include_stack_check() const { return include_stack_check_; }
 
  private:
   int block_id_;
-  bool include_stack_check_;
 };
 
 
@@ -2094,6 +2091,12 @@ class LOsrEntry: public LTemplateInstruction<0, 0, 0> {
 class LStackCheck: public LTemplateInstruction<0, 0, 0> {
  public:
   DECLARE_CONCRETE_INSTRUCTION(StackCheck, "stack-check")
+  DECLARE_HYDROGEN_ACCESSOR(StackCheck)
+
+  Label* done_label() { return &done_label_; }
+
+ private:
+  Label done_label_;
 };