1 /* 2 * Copyright (c) 1998, 2004, 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 */ 24 25 // This file defines the IndexSet class, a set of sparse integer indices. 26 // This data structure is used by the compiler in its liveness analysis and 27 // during register allocation. It also defines an iterator for this class. 28 29 #include "incls/_precompiled.incl" 30 #include "incls/_indexSet.cpp.incl" 31 32 //-------------------------------- Initializations ------------------------------ 33 34 IndexSet::BitBlock IndexSet::_empty_block = IndexSet::BitBlock(); 35 36 #ifdef ASSERT 37 // Initialize statistics counters 38 uint IndexSet::_alloc_new = 0; 39 uint IndexSet::_alloc_total = 0; 40 41 long IndexSet::_total_bits = 0; 42 long IndexSet::_total_used_blocks = 0; 43 long IndexSet::_total_unused_blocks = 0; 44 45 // Per set, or all sets operation tracing 46 int IndexSet::_serial_count = 1; 47 #endif 48 49 // What is the first set bit in a 5 bit integer? 50 const byte IndexSetIterator::_first_bit[32] = { 51 0, 0, 1, 0, | 1 /* 2 * Copyright (c) 1998, 2010, 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 */ 24 25 #include "precompiled.hpp" 26 #include "memory/allocation.inline.hpp" 27 #include "opto/chaitin.hpp" 28 #include "opto/compile.hpp" 29 #include "opto/indexSet.hpp" 30 #include "opto/regmask.hpp" 31 32 // This file defines the IndexSet class, a set of sparse integer indices. 33 // This data structure is used by the compiler in its liveness analysis and 34 // during register allocation. It also defines an iterator for this class. 35 36 //-------------------------------- Initializations ------------------------------ 37 38 IndexSet::BitBlock IndexSet::_empty_block = IndexSet::BitBlock(); 39 40 #ifdef ASSERT 41 // Initialize statistics counters 42 uint IndexSet::_alloc_new = 0; 43 uint IndexSet::_alloc_total = 0; 44 45 long IndexSet::_total_bits = 0; 46 long IndexSet::_total_used_blocks = 0; 47 long IndexSet::_total_unused_blocks = 0; 48 49 // Per set, or all sets operation tracing 50 int IndexSet::_serial_count = 1; 51 #endif 52 53 // What is the first set bit in a 5 bit integer? 54 const byte IndexSetIterator::_first_bit[32] = { 55 0, 0, 1, 0, |