jdk8-mips64-public/hotspot: src/share/vm/ci/ciConstant.hpp@194b8e3a2fc4

6384206: Phis which are later unneeded are impairing our ability to inline based on static types
Reviewed-by: rasbold, jrose

     1 /*

     2  * Copyright 1999-2003 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 // ciConstant

    26 //

    27 // This class represents a constant value.

    28 class ciConstant VALUE_OBJ_CLASS_SPEC {

    29 private:

    30   friend class ciEnv;

    31   friend class ciField;

    33   BasicType _type;

    34   union {

    35     jint      _int;

    36     jlong     _long;

    37     jint      _long_half[2];

    38     jfloat    _float;

    39     jdouble   _double;

    40     ciObject* _object;

    41   } _value;

    43   // Implementation of the print method.

    44   void print_impl(outputStream* st);

    46 public:

    48   ciConstant() {

    49     _type = T_ILLEGAL; _value._long = -1;

    50   }

    51   ciConstant(BasicType type, jint value) {

    52     assert(type != T_LONG && type != T_DOUBLE && type != T_FLOAT,

    53            "using the wrong ciConstant constructor");

    54     _type = type; _value._int = value;

    55   }

    56   ciConstant(jlong value) {

    57     _type = T_LONG; _value._long = value;

    58   }

    59   ciConstant(jfloat value) {

    60     _type = T_FLOAT; _value._float = value;

    61   }

    62   ciConstant(jdouble value) {

    63     _type = T_DOUBLE; _value._double = value;

    64   }

    65   ciConstant(BasicType type, ciObject* p) {

    66     _type = type; _value._object = p;

    67   }

    69   BasicType basic_type() const { return _type; }

    71   jboolean  as_boolean() {

    72     assert(basic_type() == T_BOOLEAN, "wrong type");

    73     return (jboolean)_value._int;

    74   }

    75   jchar     as_char() {

    76     assert(basic_type() == T_CHAR, "wrong type");

    77     return (jchar)_value._int;

    78   }

    79   jbyte     as_byte() {

    80     assert(basic_type() == T_BYTE, "wrong type");

    81     return (jbyte)_value._int;

    82   }

    83   jshort    as_short() {

    84     assert(basic_type() == T_SHORT, "wrong type");

    85     return (jshort)_value._int;

    86   }

    87   jint      as_int() {

    88     assert(basic_type() == T_BOOLEAN || basic_type() == T_CHAR  ||

    89            basic_type() == T_BYTE    || basic_type() == T_SHORT ||

    90            basic_type() == T_INT, "wrong type");

    91     return _value._int;

    92   }

    93   jlong     as_long() {

    94     assert(basic_type() == T_LONG, "wrong type");

    95     return _value._long;

    96   }

    97   jfloat    as_float() {

    98     assert(basic_type() == T_FLOAT, "wrong type");

    99     return _value._float;

   100   }

   101   jdouble   as_double() {

   102     assert(basic_type() == T_DOUBLE, "wrong type");

   103     return _value._double;

   104   }

   105   ciObject* as_object() const {

   106     assert(basic_type() == T_OBJECT || basic_type() == T_ARRAY, "wrong type");

   107     return _value._object;

   108   }

   110   // Debugging output

   111   void print();

   112 };

Mercurial > jdk8-mips64-public > hotspot / file revision