1 /* 2 * Copyright (c) 2015, 2015, 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 package org.graalvm.compiler.lir.alloc.lsra; 24 25 import static jdk.vm.ci.code.ValueUtil.isRegister; 26 27 import org.graalvm.compiler.lir.alloc.lsra.Interval.UsePosList; 28 import org.graalvm.compiler.lir.debug.IntervalDumper; 29 30 import jdk.vm.ci.meta.AllocatableValue; 31 import jdk.vm.ci.meta.Value; 32 33 class LinearScanIntervalDumper implements IntervalDumper { 34 private final Interval[] intervals; 35 36 LinearScanIntervalDumper(Interval[] intervals) { 37 this.intervals = intervals; 38 } 39 40 @Override 41 public void visitIntervals(IntervalVisitor visitor) { 42 for (Interval interval : intervals) { 43 if (interval != null) { 44 printInterval(interval, visitor); 45 } 46 } 47 } 48 49 private static void printInterval(Interval interval, IntervalVisitor visitor) { 50 Value hint = interval.locationHint(false) != null ? interval.locationHint(false).operand : null; 51 AllocatableValue operand = interval.operand; 52 String type = isRegister(operand) ? "fixed" : operand.getValueKind().getPlatformKind().toString(); 53 visitor.visitIntervalStart(interval.splitParent().operand, operand, interval.location(), hint, type); 54 55 // print ranges 56 Range cur = interval.first(); 57 while (!cur.isEndMarker()) { 58 visitor.visitRange(cur.from, cur.to); 59 cur = cur.next; 60 assert cur != null : "range list not closed with range sentinel"; 61 } 62 63 // print use positions 64 int prev = -1; 65 UsePosList usePosList = interval.usePosList(); 66 for (int i = usePosList.size() - 1; i >= 0; --i) { 67 assert prev < usePosList.usePos(i) : "use positions not sorted"; 68 visitor.visitUsePos(usePosList.usePos(i), usePosList.registerPriority(i)); 69 prev = usePosList.usePos(i); 70 } 71 72 visitor.visitIntervalEnd(interval.spillState()); 73 } 74 75 }