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src/share/vm/opto/mathexactnode.hpp@c9ccd7b85f20 (annotated)
src/share/vm/opto/mathexactnode.hpp
Fri, 27 Sep 2013 08:39:19 +0200
- author
- rbackman
- date
- Fri, 27 Sep 2013 08:39:19 +0200
- changeset 5791
- c9ccd7b85f20
- child 5927
- 4a2acfb16e97
- permissions
- -rw-r--r--
8024924: Intrinsify java.lang.Math.addExact
Reviewed-by: kvn, twisti
| rbackman@5791 | 1 | /* |
| rbackman@5791 | 2 | * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
| rbackman@5791 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| rbackman@5791 | 4 | * |
| rbackman@5791 | 5 | * This code is free software; you can redistribute it and/or modify it |
| rbackman@5791 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| rbackman@5791 | 7 | * published by the Free Software Foundation. |
| rbackman@5791 | 8 | * |
| rbackman@5791 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| rbackman@5791 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| rbackman@5791 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| rbackman@5791 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| rbackman@5791 | 13 | * accompanied this code). |
| rbackman@5791 | 14 | * |
| rbackman@5791 | 15 | * You should have received a copy of the GNU General Public License version |
| rbackman@5791 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| rbackman@5791 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| rbackman@5791 | 18 | * |
| rbackman@5791 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| rbackman@5791 | 20 | * or visit www.oracle.com if you need additional information or have any |
| rbackman@5791 | 21 | * questions. |
| rbackman@5791 | 22 | * |
| rbackman@5791 | 23 | */ |
| rbackman@5791 | 24 | |
| rbackman@5791 | 25 | #ifndef SHARE_VM_OPTO_MATHEXACTNODE_HPP |
| rbackman@5791 | 26 | #define SHARE_VM_OPTO_MATHEXACTNODE_HPP |
| rbackman@5791 | 27 | |
| rbackman@5791 | 28 | #include "opto/multnode.hpp" |
| rbackman@5791 | 29 | #include "opto/node.hpp" |
| rbackman@5791 | 30 | #include "opto/type.hpp" |
| rbackman@5791 | 31 | |
| rbackman@5791 | 32 | class Node; |
| rbackman@5791 | 33 | |
| rbackman@5791 | 34 | class PhaseGVN; |
| rbackman@5791 | 35 | class PhaseTransform; |
| rbackman@5791 | 36 | |
| rbackman@5791 | 37 | class MathExactNode : public MultiNode { |
| rbackman@5791 | 38 | public: |
| rbackman@5791 | 39 | MathExactNode(Node* ctrl, Node* in1, Node* in2); |
| rbackman@5791 | 40 | enum { |
| rbackman@5791 | 41 | result_proj_node = 0, |
| rbackman@5791 | 42 | flags_proj_node = 1 |
| rbackman@5791 | 43 | }; |
| rbackman@5791 | 44 | virtual int Opcode() const; |
| rbackman@5791 | 45 | virtual Node* Identity(PhaseTransform* phase) { return this; } |
| rbackman@5791 | 46 | virtual Node* Ideal(PhaseGVN* phase, bool can_reshape) { return NULL; } |
| rbackman@5791 | 47 | virtual const Type* Value(PhaseTransform* phase) const { return bottom_type(); } |
| rbackman@5791 | 48 | virtual uint hash() const { return Node::hash(); } |
| rbackman@5791 | 49 | virtual bool is_CFG() const { return false; } |
| rbackman@5791 | 50 | virtual uint ideal_reg() const { return NotAMachineReg; } |
| rbackman@5791 | 51 | |
| rbackman@5791 | 52 | ProjNode* result_node() { return proj_out(result_proj_node); } |
| rbackman@5791 | 53 | ProjNode* flags_node() { return proj_out(flags_proj_node); } |
| rbackman@5791 | 54 | protected: |
| rbackman@5791 | 55 | Node* no_overflow(PhaseGVN *phase, Node* new_result); |
| rbackman@5791 | 56 | }; |
| rbackman@5791 | 57 | |
| rbackman@5791 | 58 | class AddExactINode : public MathExactNode { |
| rbackman@5791 | 59 | public: |
| rbackman@5791 | 60 | AddExactINode(Node* ctrl, Node* in1, Node* in2) : MathExactNode(ctrl, in1, in2) {} |
| rbackman@5791 | 61 | virtual int Opcode() const; |
| rbackman@5791 | 62 | virtual const Type* bottom_type() const { return TypeTuple::INT_CC_PAIR; } |
| rbackman@5791 | 63 | virtual Node* match(const ProjNode* proj, const Matcher* m); |
| rbackman@5791 | 64 | virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); |
| rbackman@5791 | 65 | }; |
| rbackman@5791 | 66 | |
| rbackman@5791 | 67 | class FlagsProjNode : public ProjNode { |
| rbackman@5791 | 68 | public: |
| rbackman@5791 | 69 | FlagsProjNode(Node* src, uint con) : ProjNode(src, con) { |
| rbackman@5791 | 70 | init_class_id(Class_FlagsProj); |
| rbackman@5791 | 71 | } |
| rbackman@5791 | 72 | |
| rbackman@5791 | 73 | virtual int Opcode() const; |
| rbackman@5791 | 74 | virtual bool is_CFG() const { return false; } |
| rbackman@5791 | 75 | virtual const Type* bottom_type() const { return TypeInt::CC; } |
| rbackman@5791 | 76 | virtual uint ideal_reg() const { return Op_RegFlags; } |
| rbackman@5791 | 77 | }; |
| rbackman@5791 | 78 | |
| rbackman@5791 | 79 | |
| rbackman@5791 | 80 | #endif |
| rbackman@5791 | 81 |
