1 files changed, 14 insertions, 1 deletions
diff --git a/compiler/optimizing/nodes.h b/compiler/optimizing/nodes.h
index 47c8eda..be6b355 100644
--- a/compiler/optimizing/nodes.h
+++ b/compiler/optimizing/nodes.h
@@ -383,6 +383,12 @@ class HBasicBlock : public ArenaObject {
     return (loop_information_ != nullptr) && (loop_information_->GetHeader() == this);
   }
 
+  bool IsLoopPreHeaderFirstPredecessor() const {
+    DCHECK(IsLoopHeader());
+    DCHECK(!GetPredecessors().IsEmpty());
+    return GetPredecessors().Get(0) == GetLoopInformation()->GetPreHeader();
+  }
+
   HLoopInformation* GetLoopInformation() const {
     return loop_information_;
   }
@@ -606,7 +612,7 @@ class HInstruction : public ArenaObject {
   bool IsInLoop() const { return block_->IsInLoop(); }
   bool IsLoopHeaderPhi() { return IsPhi() && block_->IsLoopHeader(); }
 
-  virtual size_t InputCount() const  = 0;
+  virtual size_t InputCount() const = 0;
   virtual HInstruction* InputAt(size_t i) const = 0;
 
   virtual void Accept(HGraphVisitor* visitor) = 0;
@@ -1089,8 +1095,15 @@ class HCondition : public HBinaryOperation {
       : HBinaryOperation(Primitive::kPrimBoolean, first, second) {}
 
   virtual bool IsCommutative() { return true; }
+
+  // For register allocation purposes, returns whether this instruction needs to be
+  // materialized (that is, not just be in the processor flags).
   bool NeedsMaterialization() const;
 
+  // For code generation purposes, returns whether this instruction is just before
+  // `if_`, and disregard moves in between.
+  bool IsBeforeWhenDisregardMoves(HIf* if_) const;
+
   DECLARE_INSTRUCTION(Condition);
 
   virtual IfCondition GetCondition() const = 0;