8255441: Cleanup ciEnv/jvmciEnv::lookup_method-s

Reviewed-by: kvn

Author: shipilev

src/hotspot/share/ci/ciEnv.cpp

@@ -761,34 +761,29 @@ Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
                              Symbol*          sig,
                              Bytecodes::Code  bc,
                              constantTag      tag) {
-  // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
-  assert(check_klass_accessibility(accessor, holder->get_Klass()), "holder not accessible");
-
   InstanceKlass* accessor_klass = accessor->get_instanceKlass();
   Klass* holder_klass = holder->get_Klass();
-  Method* dest_method;
-  LinkInfo link_info(holder_klass, name, sig, accessor_klass, LinkInfo::AccessCheck::required, LinkInfo::LoaderConstraintCheck::required, tag);
+
+  // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
+  assert(check_klass_accessibility(accessor, holder_klass), "holder not accessible");
+
+  LinkInfo link_info(holder_klass, name, sig, accessor_klass,
+                     LinkInfo::AccessCheck::required,
+                     LinkInfo::LoaderConstraintCheck::required,
+                     tag);
   switch (bc) {
-  case Bytecodes::_invokestatic:
-    dest_method =
-      LinkResolver::resolve_static_call_or_null(link_info);
-    break;
-  case Bytecodes::_invokespecial:
-    dest_method =
-      LinkResolver::resolve_special_call_or_null(link_info);
-    break;
-  case Bytecodes::_invokeinterface:
-    dest_method =
-      LinkResolver::linktime_resolve_interface_method_or_null(link_info);
-    break;
-  case Bytecodes::_invokevirtual:
-    dest_method =
-      LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
-    break;
-  default: ShouldNotReachHere();
+    case Bytecodes::_invokestatic:
+      return LinkResolver::resolve_static_call_or_null(link_info);
+    case Bytecodes::_invokespecial:
+      return LinkResolver::resolve_special_call_or_null(link_info);
+    case Bytecodes::_invokeinterface:
+      return LinkResolver::linktime_resolve_interface_method_or_null(link_info);
+    case Bytecodes::_invokevirtual:
+      return LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
+    default:
+      fatal("Unhandled bytecode: %s", Bytecodes::name(bc));
+      return NULL; // silence compiler warnings
   }
-
-  return dest_method;
 }
 
 

src/hotspot/share/jvmci/jvmciRuntime.cpp

@@ -1328,29 +1328,23 @@ Method* JVMCIRuntime::lookup_method(InstanceKlass* accessor,
   // Accessibility checks are performed in JVMCIEnv::get_method_by_index_impl().
   assert(check_klass_accessibility(accessor, holder), "holder not accessible");
 
-  Method* dest_method;
-  LinkInfo link_info(holder, name, sig, accessor, LinkInfo::AccessCheck::required, LinkInfo::LoaderConstraintCheck::required, tag);
+  LinkInfo link_info(holder, name, sig, accessor,
+                     LinkInfo::AccessCheck::required,
+                     LinkInfo::LoaderConstraintCheck::required,
+                     tag);
   switch (bc) {
-  case Bytecodes::_invokestatic:
-    dest_method =
-      LinkResolver::resolve_static_call_or_null(link_info);
-    break;
-  case Bytecodes::_invokespecial:
-    dest_method =
-      LinkResolver::resolve_special_call_or_null(link_info);
-    break;
-  case Bytecodes::_invokeinterface:
-    dest_method =
-      LinkResolver::linktime_resolve_interface_method_or_null(link_info);
-    break;
-  case Bytecodes::_invokevirtual:
-    dest_method =
-      LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
-    break;
-  default: ShouldNotReachHere();
-  }
-
-  return dest_method;
+    case Bytecodes::_invokestatic:
+      return LinkResolver::resolve_static_call_or_null(link_info);
+    case Bytecodes::_invokespecial:
+      return LinkResolver::resolve_special_call_or_null(link_info);
+    case Bytecodes::_invokeinterface:
+      return LinkResolver::linktime_resolve_interface_method_or_null(link_info);
+    case Bytecodes::_invokevirtual:
+      return LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
+    default:
+      fatal("Unhandled bytecode: %s", Bytecodes::name(bc));
+      return NULL; // silence compiler warnings
+  }
 }