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.phases; 24 25 import org.graalvm.compiler.lir.LIR; 26 import org.graalvm.compiler.lir.Variable; 27 import org.graalvm.compiler.lir.VirtualStackSlot; 28 import org.graalvm.compiler.lir.gen.LIRGenerationResult; 29 import org.graalvm.compiler.lir.gen.LIRGeneratorTool; 30 import org.graalvm.compiler.lir.phases.AllocationPhase.AllocationContext; 31 import org.graalvm.compiler.lir.phases.PostAllocationOptimizationPhase.PostAllocationOptimizationContext; 32 import org.graalvm.compiler.lir.phases.PreAllocationOptimizationPhase.PreAllocationOptimizationContext; 33 34 import jdk.vm.ci.code.StackSlot; 35 36 public class LIRSuites { 37 38 private final LIRPhaseSuite<PreAllocationOptimizationContext> preAllocOptStage; 39 private final LIRPhaseSuite<AllocationContext> allocStage; 40 private final LIRPhaseSuite<PostAllocationOptimizationContext> postAllocStage; 41 private boolean immutable; 42 43 public LIRSuites(LIRPhaseSuite<PreAllocationOptimizationContext> preAllocOptStage, LIRPhaseSuite<AllocationContext> allocStage, LIRPhaseSuite<PostAllocationOptimizationContext> postAllocStage) { 44 this.preAllocOptStage = preAllocOptStage; 45 this.allocStage = allocStage; 46 this.postAllocStage = postAllocStage; 47 } 48 49 public LIRSuites(LIRSuites other) { 50 this(other.getPreAllocationOptimizationStage().copy(), other.getAllocationStage().copy(), other.getPostAllocationOptimizationStage().copy()); 51 } 52 53 /** 54 * {@link PreAllocationOptimizationPhase}s are executed between {@link LIR} generation and 55 * register allocation. 56 * <p> 57 * {@link PreAllocationOptimizationPhase Implementers} can create new 58 * {@link LIRGeneratorTool#newVariable variables}, {@link LIRGenerationResult#getFrameMap stack 59 * slots} and {@link LIRGenerationResult#getFrameMapBuilder virtual stack slots}. 60 */ 61 public LIRPhaseSuite<PreAllocationOptimizationContext> getPreAllocationOptimizationStage() { 62 return preAllocOptStage; 63 } 64 65 /** 66 * {@link AllocationPhase}s are responsible for register allocation and translating 67 * {@link VirtualStackSlot}s into {@link StackSlot}s. 68 * <p> 69 * After the {@link AllocationStage} there should be no more {@link Variable}s and 70 * {@link VirtualStackSlot}s. 71 */ 72 public LIRPhaseSuite<AllocationContext> getAllocationStage() { 73 return allocStage; 74 } 75 76 /** 77 * {@link PostAllocationOptimizationPhase}s are executed after register allocation and before 78 * machine code generation. 79 * <p> 80 * A {@link PostAllocationOptimizationPhase} must not introduce new {@link Variable}s, 81 * {@link VirtualStackSlot}s or {@link StackSlot}s. Blocks might be removed from 82 * {@link LIR#codeEmittingOrder()} by overwriting them with {@code null}. 83 */ 84 public LIRPhaseSuite<PostAllocationOptimizationContext> getPostAllocationOptimizationStage() { 85 return postAllocStage; 86 } 87 88 public boolean isImmutable() { 89 return immutable; 90 } 91 92 public synchronized void setImmutable() { 93 if (!immutable) { 94 preAllocOptStage.setImmutable(); 95 allocStage.setImmutable(); 96 postAllocStage.setImmutable(); 97 immutable = true; 98 } 99 } 100 101 public LIRSuites copy() { 102 return new LIRSuites(preAllocOptStage.copy(), allocStage.copy(), postAllocStage.copy()); 103 } 104 }