Optimize numeric comparison with known successors.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 90968373a51e16b68b1b12b4740665ff9c297e2c..d2624161bcff57d7bbdcd94d46d7b132af303592 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -1314,11 +1314,8 @@ HValue* HGraphBuilder::BuildCheckForCapacityGrow(
 
   HValue* max_gap = Add<HConstant>(static_cast<int32_t>(JSObject::kMaxGap));
   HValue* max_capacity = AddUncasted<HAdd>(current_capacity, max_gap);
-  IfBuilder key_checker(this);
-  key_checker.If<HCompareNumericAndBranch>(key, max_capacity, Token::LT);
-  key_checker.Then();
-  key_checker.ElseDeopt("Key out of capacity range");
-  key_checker.End();
+
+  Add<HBoundsCheck>(key, max_capacity);
 
   HValue* new_capacity = BuildNewElementsCapacity(key);
   HValue* new_elements = BuildGrowElementsCapacity(object, elements,