25 package org.graalvm.compiler.core.test;

    25 package org.graalvm.compiler.core.test;

    26 

    26 

    27 import org.graalvm.compiler.core.common.type.IntegerStamp;

    27 import org.graalvm.compiler.core.common.type.IntegerStamp;

    28 import org.graalvm.compiler.nodes.StructuredGraph;

    28 import org.graalvm.compiler.nodes.StructuredGraph;

    29 import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;

    29 import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;

    31 import org.graalvm.compiler.phases.common.DeadCodeEliminationPhase;

    30 import org.graalvm.compiler.phases.common.DeadCodeEliminationPhase;

    32 import org.junit.Test;

    31 import org.junit.Test;

    33 

    32 

    34 /**

    33 /**

    35  * This class tests some specific patterns the stamp system should be able to canonicalize away

    34  * This class tests some specific patterns the stamp system should be able to canonicalize away

   109         testZeroReturn("distinctMask");

   108         testZeroReturn("distinctMask");

   110     }

   109     }

   111 

   110 

   112     private void testZeroReturn(String methodName) {

   111     private void testZeroReturn(String methodName) {

   113         StructuredGraph graph = parseEager(methodName, AllowAssumptions.YES);

   112         StructuredGraph graph = parseEager(methodName, AllowAssumptions.YES);

   115         new DeadCodeEliminationPhase().apply(graph);

   114         new DeadCodeEliminationPhase().apply(graph);

   116         assertConstantReturn(graph, 0);

   115         assertConstantReturn(graph, 0);

   117     }

   116     }

   118 }

   117 }