Mercurial > hg > truffle
diff src/share/vm/opto/mathexactnode.hpp @ 12355:cefad50507d8
Merge with hs25-b53
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Fri, 11 Oct 2013 10:38:03 +0200 |
parents | c9ccd7b85f20 |
children | 4a2acfb16e97 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/opto/mathexactnode.hpp Fri Oct 11 10:38:03 2013 +0200 @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +#ifndef SHARE_VM_OPTO_MATHEXACTNODE_HPP +#define SHARE_VM_OPTO_MATHEXACTNODE_HPP + +#include "opto/multnode.hpp" +#include "opto/node.hpp" +#include "opto/type.hpp" + +class Node; + +class PhaseGVN; +class PhaseTransform; + +class MathExactNode : public MultiNode { +public: + MathExactNode(Node* ctrl, Node* in1, Node* in2); + enum { + result_proj_node = 0, + flags_proj_node = 1 + }; + virtual int Opcode() const; + virtual Node* Identity(PhaseTransform* phase) { return this; } + virtual Node* Ideal(PhaseGVN* phase, bool can_reshape) { return NULL; } + virtual const Type* Value(PhaseTransform* phase) const { return bottom_type(); } + virtual uint hash() const { return Node::hash(); } + virtual bool is_CFG() const { return false; } + virtual uint ideal_reg() const { return NotAMachineReg; } + + ProjNode* result_node() { return proj_out(result_proj_node); } + ProjNode* flags_node() { return proj_out(flags_proj_node); } +protected: + Node* no_overflow(PhaseGVN *phase, Node* new_result); +}; + +class AddExactINode : public MathExactNode { +public: + AddExactINode(Node* ctrl, Node* in1, Node* in2) : MathExactNode(ctrl, in1, in2) {} + virtual int Opcode() const; + virtual const Type* bottom_type() const { return TypeTuple::INT_CC_PAIR; } + virtual Node* match(const ProjNode* proj, const Matcher* m); + virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); +}; + +class FlagsProjNode : public ProjNode { +public: + FlagsProjNode(Node* src, uint con) : ProjNode(src, con) { + init_class_id(Class_FlagsProj); + } + + virtual int Opcode() const; + virtual bool is_CFG() const { return false; } + virtual const Type* bottom_type() const { return TypeInt::CC; } + virtual uint ideal_reg() const { return Op_RegFlags; } +}; + + +#endif +