8282664: Unroll by hand StringUTF16, StringLatin1, and Arrays polynomial hash loops

src/hotspot/share/adlc/formssel.cpp

@@ -898,6 +898,7 @@ uint InstructForm::oper_input_base(FormDict &globals) {
 
   if( _matrule->_rChild &&
       ( strcmp(_matrule->_rChild->_opType,"AryEq"     )==0 ||
+        strcmp(_matrule->_rChild->_opType,"AryHashCode")==0 ||
         strcmp(_matrule->_rChild->_opType,"StrComp"   )==0 ||
         strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 ||
         strcmp(_matrule->_rChild->_opType,"StrHashCode")==0 ||

src/hotspot/share/opto/loopnode.cpp

@@ -5785,6 +5785,7 @@ void PhaseIdealLoop::build_loop_late_post_work(Node *n, bool pinned) {
     case Op_StrIndexOf:
     case Op_StrIndexOfChar:
     case Op_AryEq:
+    case Op_AryHashCode:
     case Op_CountPositives:
       pinned = false;
     }