hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.loop.phases/src/org/graalvm/compiler/loop/phases/LoopPeelingPhase.java
author iveresov
Thu, 06 Apr 2017 14:31:32 -0700
changeset 46371 0337d0617e7b
parent 43972 1ade39b8381b
child 46640 70bdce04c59b
permissions -rw-r--r--
8178088: Update Graal Summary: Update Graal, do appropriate changes to jaotc Reviewed-by: kvn
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
43972
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
     1
/*
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
     2
 * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
     3
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
     4
 *
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
     5
 * This code is free software; you can redistribute it and/or modify it
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
     6
 * under the terms of the GNU General Public License version 2 only, as
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
     7
 * published by the Free Software Foundation.
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
     8
 *
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
     9
 * This code is distributed in the hope that it will be useful, but WITHOUT
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    10
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    11
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    12
 * version 2 for more details (a copy is included in the LICENSE file that
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    13
 * accompanied this code).
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    14
 *
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    15
 * You should have received a copy of the GNU General Public License version
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    16
 * 2 along with this work; if not, write to the Free Software Foundation,
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    17
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    18
 *
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    19
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    20
 * or visit www.oracle.com if you need additional information or have any
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    21
 * questions.
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    22
 */
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    23
package org.graalvm.compiler.loop.phases;
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    24
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    25
import org.graalvm.compiler.debug.Debug;
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    26
import org.graalvm.compiler.loop.LoopEx;
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    27
import org.graalvm.compiler.loop.LoopPolicies;
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    28
import org.graalvm.compiler.loop.LoopsData;
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    29
import org.graalvm.compiler.nodes.StructuredGraph;
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    30
import org.graalvm.compiler.phases.tiers.PhaseContext;
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    31
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    32
public class LoopPeelingPhase extends LoopPhase<LoopPolicies> {
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    33
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    34
    public LoopPeelingPhase(LoopPolicies policies) {
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    35
        super(policies);
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    36
    }
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    37
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    38
    @Override
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    39
    @SuppressWarnings("try")
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    40
    protected void run(StructuredGraph graph, PhaseContext context) {
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    41
        if (graph.hasLoops()) {
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    42
            LoopsData data = new LoopsData(graph);
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    43
            try (Debug.Scope s = Debug.scope("peeling", data.getCFG())) {
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    44
                for (LoopEx loop : data.outerFirst()) {
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    45
                    if (getPolicies().shouldPeel(loop, data.getCFG(), context.getMetaAccess())) {
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    46
                        Debug.log("Peeling %s", loop);
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    47
                        LoopTransformations.peel(loop);
46371
0337d0617e7b 8178088: Update Graal
iveresov
parents: 43972
diff changeset
    48
                        Debug.dump(Debug.DETAILED_LEVEL, graph, "Peeling %s", loop);
43972
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    49
                    }
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    50
                }
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    51
                data.deleteUnusedNodes();
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    52
            } catch (Throwable t) {
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    53
                throw Debug.handle(t);
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    54
            }
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    55
        }
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    56
    }
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    57
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    58
    @Override
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    59
    public float codeSizeIncrease() {
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    60
        return 5.0f;
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    61
    }
1ade39b8381b 8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
kvn
parents:
diff changeset
    62
}