195       // a final non-static field of a trusted class ({java,sun}.dyn).
 196       if (trust_final_non_static_fields(_holder)) {
 197         _is_constant = true;
 198         return;
 199       }
 200       _is_constant = false;
 201       return;
 202     }
 203 
 204     // This field just may be constant.  The only cases where it will
 205     // not be constant are:
 206     //
 207     // 1. The field holds a non-perm-space oop.  The field is, strictly
 208     //    speaking, constant but we cannot embed non-perm-space oops into
 209     //    generated code.  For the time being we need to consider the
 210     //    field to be not constant.
 211     // 2. The field is a *special* static&final field whose value
 212     //    may change.  The three examples are java.lang.System.in,
 213     //    java.lang.System.out, and java.lang.System.err.
 214 
 215     klassOop k = _holder->get_klassOop();
 216     assert( SystemDictionary::System_klass() != NULL, "Check once per vm");
 217     if( k == SystemDictionary::System_klass() ) {
 218       // Check offsets for case 2: System.in, System.out, or System.err
 219       if( _offset == java_lang_System::in_offset_in_bytes()  ||
 220           _offset == java_lang_System::out_offset_in_bytes() ||
 221           _offset == java_lang_System::err_offset_in_bytes() ) {
 222         _is_constant = false;
 223         return;
 224       }
 225     }
 226 
 227     _is_constant = true;
 228     switch(type()->basic_type()) {
 229     case T_BYTE:
 230       _constant_value = ciConstant(type()->basic_type(), k->byte_field(_offset));
 231       break;
 232     case T_CHAR:
 233       _constant_value = ciConstant(type()->basic_type(), k->char_field(_offset));
 234       break;
 235     case T_SHORT:
 236       _constant_value = ciConstant(type()->basic_type(), k->short_field(_offset));
 237       break;

 195       // a final non-static field of a trusted class ({java,sun}.dyn).
 196       if (trust_final_non_static_fields(_holder)) {
 197         _is_constant = true;
 198         return;
 199       }
 200       _is_constant = false;
 201       return;
 202     }
 203 
 204     // This field just may be constant.  The only cases where it will
 205     // not be constant are:
 206     //
 207     // 1. The field holds a non-perm-space oop.  The field is, strictly
 208     //    speaking, constant but we cannot embed non-perm-space oops into
 209     //    generated code.  For the time being we need to consider the
 210     //    field to be not constant.
 211     // 2. The field is a *special* static&final field whose value
 212     //    may change.  The three examples are java.lang.System.in,
 213     //    java.lang.System.out, and java.lang.System.err.
 214 
 215     Handle k = _holder->get_klassOop();
 216     assert( SystemDictionary::System_klass() != NULL, "Check once per vm");
 217     if( k() == SystemDictionary::System_klass() ) {
 218       // Check offsets for case 2: System.in, System.out, or System.err
 219       if( _offset == java_lang_System::in_offset_in_bytes()  ||
 220           _offset == java_lang_System::out_offset_in_bytes() ||
 221           _offset == java_lang_System::err_offset_in_bytes() ) {
 222         _is_constant = false;
 223         return;
 224       }
 225     }
 226 
 227     _is_constant = true;
 228     switch(type()->basic_type()) {
 229     case T_BYTE:
 230       _constant_value = ciConstant(type()->basic_type(), k->byte_field(_offset));
 231       break;
 232     case T_CHAR:
 233       _constant_value = ciConstant(type()->basic_type(), k->char_field(_offset));
 234       break;
 235     case T_SHORT:
 236       _constant_value = ciConstant(type()->basic_type(), k->short_field(_offset));
 237       break;