| /* |
| * Copyright (c) 2014, 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_COUNTBITSNODE_HPP |
| #define SHARE_VM_OPTO_COUNTBITSNODE_HPP |
| |
| #include "opto/node.hpp" |
| #include "opto/opcodes.hpp" |
| |
| class PhaseTransform; |
| |
| //---------- CountBitsNode ----------------------------------------------------- |
| class CountBitsNode : public Node { |
| public: |
| CountBitsNode(Node* in1) : Node(0, in1) {} |
| const Type* bottom_type() const { return TypeInt::INT; } |
| virtual uint ideal_reg() const { return Op_RegI; } |
| }; |
| |
| //---------- CountLeadingZerosINode -------------------------------------------- |
| // Count leading zeros (0-bit count starting from MSB) of an integer. |
| class CountLeadingZerosINode : public CountBitsNode { |
| public: |
| CountLeadingZerosINode(Node* in1) : CountBitsNode(in1) {} |
| virtual int Opcode() const; |
| virtual const Type* Value(PhaseGVN* phase) const; |
| }; |
| |
| //---------- CountLeadingZerosLNode -------------------------------------------- |
| // Count leading zeros (0-bit count starting from MSB) of a long. |
| class CountLeadingZerosLNode : public CountBitsNode { |
| public: |
| CountLeadingZerosLNode(Node* in1) : CountBitsNode(in1) {} |
| virtual int Opcode() const; |
| virtual const Type* Value(PhaseGVN* phase) const; |
| }; |
| |
| //---------- CountTrailingZerosINode ------------------------------------------- |
| // Count trailing zeros (0-bit count starting from LSB) of an integer. |
| class CountTrailingZerosINode : public CountBitsNode { |
| public: |
| CountTrailingZerosINode(Node* in1) : CountBitsNode(in1) {} |
| virtual int Opcode() const; |
| virtual const Type* Value(PhaseGVN* phase) const; |
| }; |
| |
| //---------- CountTrailingZerosLNode ------------------------------------------- |
| // Count trailing zeros (0-bit count starting from LSB) of a long. |
| class CountTrailingZerosLNode : public CountBitsNode { |
| public: |
| CountTrailingZerosLNode(Node* in1) : CountBitsNode(in1) {} |
| virtual int Opcode() const; |
| virtual const Type* Value(PhaseGVN* phase) const; |
| }; |
| |
| //---------- PopCountINode ----------------------------------------------------- |
| // Population count (bit count) of an integer. |
| class PopCountINode : public CountBitsNode { |
| public: |
| PopCountINode(Node* in1) : CountBitsNode(in1) {} |
| virtual int Opcode() const; |
| }; |
| |
| //---------- PopCountLNode ----------------------------------------------------- |
| // Population count (bit count) of a long. |
| class PopCountLNode : public CountBitsNode { |
| public: |
| PopCountLNode(Node* in1) : CountBitsNode(in1) {} |
| virtual int Opcode() const; |
| }; |
| |
| |
| #endif // SHARE_VM_OPTO_COUNTBITSNODE_HPP |