Mercurial > hg > graal-compiler
view graal/com.oracle.graal.lir/src/com/oracle/graal/lir/alloc/lsra/SSALinearScan.java @ 21556:48c1ebd24120
renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 27 May 2015 00:36:16 +0200 |
parents | b1530a6cce8c |
children | 0e095e2c24e2 |
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/* * Copyright (c) 2015, 2015, 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. */ package com.oracle.graal.lir.alloc.lsra; import com.oracle.jvmci.code.TargetDescription; import com.oracle.graal.compiler.common.alloc.*; import com.oracle.graal.compiler.common.cfg.*; import com.oracle.graal.lir.gen.*; import com.oracle.graal.lir.gen.LIRGeneratorTool.SpillMoveFactory; import com.oracle.graal.lir.ssa.*; import com.oracle.jvmci.debug.*; import com.oracle.jvmci.debug.Debug.Scope; final class SSALinearScan extends LinearScan { SSALinearScan(TargetDescription target, LIRGenerationResult res, SpillMoveFactory spillMoveFactory, RegisterAllocationConfig regAllocConfig) { super(target, res, spillMoveFactory, regAllocConfig); } @Override protected MoveResolver createMoveResolver() { SSAMoveResolver moveResolver = new SSAMoveResolver(this); assert moveResolver.checkEmpty(); return moveResolver; } @Override protected LinearScanLifetimeAnalysisPhase createLifetimeAnalysisPhase() { return new SSALinearScanLifetimeAnalysisPhase(this); } @Override protected LinearScanResolveDataFlowPhase createResolveDataFlowPhase() { return new SSALinarScanResolveDataFlowPhase(this); } @Override protected LinearScanEliminateSpillMovePhase createSpillMoveEliminationPhase() { return new SSALinearScanEliminateSpillMovePhase(this); } @Override protected void beforeSpillMoveElimination() { /* * PHI Ins are needed for the RegisterVerifier, otherwise PHIs where the Out and In value * matches (ie. there is no resolution move) are falsely detected as errors. */ try (Scope s1 = Debug.scope("Remove Phi In")) { for (AbstractBlockBase<?> toBlock : sortedBlocks) { if (toBlock.getPredecessorCount() > 1) { SSAUtils.removePhiIn(ir, toBlock); } } } } }