[turbofan] Cache more common operators.

src/compiler/common-operator.h

Index: src/compiler/common-operator.h
diff --git a/src/compiler/common-operator.h b/src/compiler/common-operator.h
index aab6a193e4e81e7cc7a2a64199fcc168e171940c..f28ea8b51f298b63225339e9ca9cae853499d7ac 100644
--- a/src/compiler/common-operator.h
+++ b/src/compiler/common-operator.h
@@ -199,8 +199,8 @@ class CommonOperatorBuilder FINAL : public ZoneObject {
   const Operator* HeapConstant(const Unique<HeapObject>&);
 
   const Operator* Select(MachineType, BranchHint = BranchHint::kNone);
-  const Operator* Phi(MachineType type, int arguments);
-  const Operator* EffectPhi(int arguments);
+  const Operator* Phi(MachineType type, int value_input_count);
+  const Operator* EffectPhi(int effect_input_count);
   const Operator* EffectSet(int arguments);
   const Operator* ValueEffect(int arguments);
   const Operator* Finish(int arguments);