jdk8-mips64-public/hotspot: src/share/vm/opto/mathexactnode.hpp@4a2acfb16e97

8025657: compiler/intrinsics/mathexact/ConstantTest.java fails on assert in lcm.cpp on solaris x64
Reviewed-by: kvn, twisti

     1 /*

     2  * Copyright (c) 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef SHARE_VM_OPTO_MATHEXACTNODE_HPP

    26 #define SHARE_VM_OPTO_MATHEXACTNODE_HPP

    28 #include "opto/multnode.hpp"

    29 #include "opto/node.hpp"

    30 #include "opto/subnode.hpp"

    31 #include "opto/type.hpp"

    33 class BoolNode;

    34 class IfNode;

    35 class Node;

    37 class PhaseGVN;

    38 class PhaseTransform;

    40 class MathExactNode : public MultiNode {

    41 public:

    42   MathExactNode(Node* ctrl, Node* in1, Node* in2);

    43   enum {

    44     result_proj_node = 0,

    45     flags_proj_node = 1

    46   };

    47   virtual int Opcode() const;

    48   virtual Node* Identity(PhaseTransform* phase) { return this; }

    49   virtual Node* Ideal(PhaseGVN* phase, bool can_reshape) { return NULL; }

    50   virtual const Type* Value(PhaseTransform* phase) const { return bottom_type(); }

    51   virtual uint hash() const { return Node::hash(); }

    52   virtual bool is_CFG() const { return false; }

    53   virtual uint ideal_reg() const { return NotAMachineReg; }

    55   ProjNode* result_node() const { return proj_out(result_proj_node); }

    56   ProjNode* flags_node() const { return proj_out(flags_proj_node); }

    57   Node* control_node() const;

    58   Node* non_throwing_branch() const;

    59 protected:

    60   IfNode* if_node() const;

    61   BoolNode* bool_node() const;

    62   Node* no_overflow(PhaseGVN *phase, Node* new_result);

    63 };

    65 class AddExactINode : public MathExactNode {

    66 public:

    67   AddExactINode(Node* ctrl, Node* in1, Node* in2) : MathExactNode(ctrl, in1, in2) {}

    68   virtual int Opcode() const;

    69   virtual const Type* bottom_type() const { return TypeTuple::INT_CC_PAIR; }

    70   virtual Node* match(const ProjNode* proj, const Matcher* m);

    71   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);

    72 };

    74 class FlagsProjNode : public ProjNode {

    75 public:

    76   FlagsProjNode(Node* src, uint con) : ProjNode(src, con) {

    77     init_class_id(Class_FlagsProj);

    78   }

    80   virtual int Opcode() const;

    81   virtual bool is_CFG() const { return false; }

    82   virtual const Type* bottom_type() const { return TypeInt::CC; }

    83   virtual uint ideal_reg() const { return Op_RegFlags; }

    84 };

    87 #endif

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