6957004: MethodComparator uses the wrong CP index accessor

Summary: Change two uses of get_index_u2 to get_index_u2_cpcache; also tweak some debugging print functions
Reviewed-by: kvn

src/share/vm/oops/constantPoolKlass.cpp

@@ -310,15 +310,12 @@ void constantPoolKlass::oop_print_on(oop obj, outputStream* st) {
   Klass::oop_print_on(obj, st);
   constantPoolOop cp = constantPoolOop(obj);
   if (cp->flags() != 0) {
-    st->print(" - flags : 0x%x", cp->flags());
+    st->print(" - flags: 0x%x", cp->flags());
     if (cp->has_pseudo_string()) st->print(" has_pseudo_string");
     if (cp->has_invokedynamic()) st->print(" has_invokedynamic");
     st->cr();
   }
-
-  // Temp. remove cache so we can do lookups with original indicies.
-  constantPoolCacheHandle cache (THREAD, cp->cache());
-  cp->set_cache(NULL);
+  st->print_cr(" - cache: " INTPTR_FORMAT, cp->cache());
 
   for (int index = 1; index < cp->length(); index++) {      // Index 0 is unused
     st->print(" - %3d : ", index);
@@ -334,8 +331,8 @@ void constantPoolKlass::oop_print_on(oop obj, outputStream* st) {
       case JVM_CONSTANT_Fieldref :
       case JVM_CONSTANT_Methodref :
       case JVM_CONSTANT_InterfaceMethodref :
-        st->print("klass_index=%d", cp->klass_ref_index_at(index));
-        st->print(" name_and_type_index=%d", cp->name_and_type_ref_index_at(index));
+        st->print("klass_index=%d", cp->uncached_klass_ref_index_at(index));
+        st->print(" name_and_type_index=%d", cp->uncached_name_and_type_ref_index_at(index));
         break;
       case JVM_CONSTANT_UnresolvedString :
       case JVM_CONSTANT_String :
@@ -382,9 +379,6 @@ void constantPoolKlass::oop_print_on(oop obj, outputStream* st) {
     st->cr();
   }
   st->cr();
-
-  // Restore cache
-  cp->set_cache(cache());
 }
 
 #endif
@@ -398,6 +392,9 @@ void constantPoolKlass::oop_print_value_on(oop obj, outputStream* st) {
   cp->print_address_on(st);
   st->print(" for ");
   cp->pool_holder()->print_value_on(st);
+  if (cp->cache() != NULL) {
+    st->print(" cache=" PTR_FORMAT, cp->cache());
+  }
 }
 
 const char* constantPoolKlass::internal_name() const {

src/share/vm/oops/methodKlass.cpp

@@ -237,7 +237,7 @@ void methodKlass::oop_print_on(oop obj, outputStream* st) {
   Klass::oop_print_on(obj, st);
   methodOop m = methodOop(obj);
   // get the effect of PrintOopAddress, always, for methods:
-  st->print   (" - this oop:          "INTPTR_FORMAT, (intptr_t)m);
+  st->print_cr(" - this oop:          "INTPTR_FORMAT, (intptr_t)m);
   st->print   (" - method holder:     ");    m->method_holder()->print_value_on(st); st->cr();
   st->print   (" - constants:         "INTPTR_FORMAT" ", (address)m->constants());
   m->constants()->print_value_on(st); st->cr();

src/share/vm/prims/methodComparator.cpp

@@ -149,8 +149,8 @@ bool MethodComparator::args_same(Bytecodes::Code c_old, Bytecodes::Code c_new) {
   case Bytecodes::_invokestatic    : // fall through
   case Bytecodes::_invokedynamic   : // fall through
   case Bytecodes::_invokeinterface : {
-    u2 cpci_old = _s_old->has_index_u4() ? _s_old->get_index_u4() : _s_old->get_index_u2();
-    u2 cpci_new = _s_new->has_index_u4() ? _s_new->get_index_u4() : _s_new->get_index_u2();
+    int cpci_old = _s_old->has_index_u4() ? _s_old->get_index_u4() : _s_old->get_index_u2_cpcache();
+    int cpci_new = _s_new->has_index_u4() ? _s_new->get_index_u4() : _s_new->get_index_u2_cpcache();
     // Check if the names of classes, field/method names and signatures at these indexes
     // are the same. Indices which are really into constantpool cache (rather than constant
     // pool itself) are accepted by the constantpool query routines below.