8283997: Unused argument in GraphKit::builtin_throw

Reviewed-by: roland, redestad, chagedorn

Author: TobiHartmann

src/hotspot/share/opto/graphKit.cpp

@@ -526,7 +526,7 @@ void GraphKit::uncommon_trap_if_should_post_on_exceptions(Deoptimization::DeoptR
 }
 
 //------------------------------builtin_throw----------------------------------
-void GraphKit::builtin_throw(Deoptimization::DeoptReason reason, Node* arg) {
+void GraphKit::builtin_throw(Deoptimization::DeoptReason reason) {
   bool must_throw = true;
 
   // If this particular condition has not yet happened at this
@@ -3334,7 +3334,7 @@ Node* GraphKit::gen_checkcast(Node *obj, Node* superklass,
           bool is_aastore = (java_bc() == Bytecodes::_aastore);
           Deoptimization::DeoptReason reason = is_aastore ?
             Deoptimization::Reason_array_check : Deoptimization::Reason_class_check;
-          builtin_throw(reason, makecon(TypeKlassPtr::make(objtp->klass())));
+          builtin_throw(reason);
           return top();
         } else if (!too_many_traps_or_recompiles(Deoptimization::Reason_null_assert)) {
           return null_assert(obj);
@@ -3419,7 +3419,7 @@ Node* GraphKit::gen_checkcast(Node *obj, Node* superklass,
         bool is_aastore = (java_bc() == Bytecodes::_aastore);
         Deoptimization::DeoptReason reason = is_aastore ?
           Deoptimization::Reason_array_check : Deoptimization::Reason_class_check;
-        builtin_throw(reason, load_object_klass(not_null_obj));
+        builtin_throw(reason);
       }
     } else {
       (*failure_control) = not_subtype_ctrl;

src/hotspot/share/opto/graphKit.hpp

@@ -266,12 +266,8 @@ class GraphKit : public Phase {
   JVMState* transfer_exceptions_into_jvms();
 
   // Helper to throw a built-in exception.
-  // Range checks take the offending index.
-  // Cast and array store checks take the offending class.
-  // Others do not take the optional argument.
-  // The JVMS must allow the bytecode to be re-executed
-  // via an uncommon trap.
-  void builtin_throw(Deoptimization::DeoptReason reason, Node* arg = NULL);
+  // The JVMS must allow the bytecode to be re-executed via an uncommon trap.
+  void builtin_throw(Deoptimization::DeoptReason reason);
 
   // Helper to check the JavaThread::_should_post_on_exceptions flag
   // and branch to an uncommon_trap if it is true (with the specified reason and must_throw)

src/hotspot/share/opto/parse2.cpp

@@ -194,7 +194,7 @@ Node* Parse::array_addressing(BasicType type, int vals, const Type*& elemtype) {
         // If we have already recompiled with the range-check-widening
         // heroic optimization turned off, then we must really be throwing
         // range check exceptions.
-        builtin_throw(Deoptimization::Reason_range_check, idx);
+        builtin_throw(Deoptimization::Reason_range_check);
       }
     }
   }