Enable merging of comparisons into branches in checked mode.

runtime/vm/intermediate_language.h

Index: runtime/vm/intermediate_language.h
===================================================================
--- runtime/vm/intermediate_language.h	(revision 13969)
+++ runtime/vm/intermediate_language.h	(working copy)
@@ -1484,8 +1484,8 @@
 
 class BranchInstr : public ControlInstruction {
  public:
-  explicit BranchInstr(ComparisonInstr* comparison)
-      : comparison_(comparison) { }
+  explicit BranchInstr(ComparisonInstr* comparison, bool is_checked = false)
+      : comparison_(comparison), is_checked_(is_checked) { }
 
   DECLARE_INSTRUCTION(Branch)
 
@@ -1500,6 +1500,8 @@
   ComparisonInstr* comparison() const { return comparison_; }
   void set_comparison(ComparisonInstr* value) { comparison_ = value; }
 
+  bool is_checked() const { return is_checked_; }
+
   virtual LocationSummary* locs();
   virtual intptr_t DeoptimizationTarget() const;
   virtual Representation RequiredInputRepresentation(intptr_t i) const;
@@ -1514,6 +1516,7 @@
 
  private:
   ComparisonInstr* comparison_;
+  bool is_checked_;

[srdjan, 2012/10/23 18:06:06]

const 

[Florian Schneider, 2012/10/24 13:02:09]

Done.

 
   DISALLOW_COPY_AND_ASSIGN(BranchInstr);
 };