package org.graalvm.compiler.core.test;
import org.graalvm.compiler.graph.iterators.NodeIterable;
import org.graalvm.compiler.nodes.ConstantNode;
import org.graalvm.compiler.nodes.FixedGuardNode;
import org.graalvm.compiler.nodes.GuardNode;
import org.graalvm.compiler.nodes.LogicNode;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
import org.graalvm.compiler.nodes.calc.IntegerBelowNode;
import org.graalvm.compiler.nodes.java.LoadIndexedNode;
import org.graalvm.compiler.nodes.memory.FloatingReadNode;
import org.graalvm.compiler.nodes.memory.ReadNode;
import org.graalvm.compiler.nodes.spi.LoweringTool;
import org.graalvm.compiler.phases.common.CanonicalizerPhase;
import org.graalvm.compiler.phases.common.FloatingReadPhase;
import org.graalvm.compiler.phases.common.IterativeConditionalEliminationPhase;
import org.graalvm.compiler.phases.common.LoweringPhase;
import org.graalvm.compiler.phases.tiers.PhaseContext;
import org.junit.Assert;
import org.junit.Test;
import jdk.vm.ci.meta.DeoptimizationReason;
public class ConditionalEliminationTest14 extends ConditionalEliminationTestBase {
public static void test1Snippet(Object[] args) {
Object a5 = args[5];
Object a7 = args[7];
Object a6 = args[6];
if (a5 != null && a7 != null && a6 != null) {
sink1 = 1;
}
sink0 = 0;
}
@Test
public void test1() {
StructuredGraph graph = parseEager("test1Snippet", AllowAssumptions.YES);
CanonicalizerPhase canonicalizer = new CanonicalizerPhase();
PhaseContext context = new PhaseContext(getProviders());
new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context);
new FloatingReadPhase().apply(graph);
new IterativeConditionalEliminationPhase(canonicalizer, true).apply(graph, context);
Assert.assertEquals("All guards must be floating", 0, graph.getNodes(FixedGuardNode.TYPE).count());
Assert.assertEquals("All array accesses must have been lowered", 0, graph.getNodes().filter(LoadIndexedNode.class).count());
Assert.assertEquals("All reads must be floating", 0, graph.getNodes().filter(ReadNode.class).count());
Assert.assertEquals("Must have floating reads (3 array accesses, 1 array length)", 4, graph.getNodes().filter(FloatingReadNode.class).count());
NodeIterable<GuardNode> boundsChecks = graph.getNodes(GuardNode.TYPE).filter(n -> ((GuardNode) n).getReason() == DeoptimizationReason.BoundsCheckException);
Assert.assertEquals("Must have only 1 bounds check remaining", 1, boundsChecks.count());
LogicNode condition = boundsChecks.first().getCondition();
Assert.assertTrue("Bounds check must check for array length 8", condition instanceof IntegerBelowNode && ((IntegerBelowNode) condition).getY().valueEquals(ConstantNode.forInt(8)));
}
}