src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.microbenchmarks/src/org/graalvm/compiler/microbenchmarks/graal/GraphCopyBenchmark.java

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  import org.graalvm.compiler.microbenchmarks.graal.util.GraphState;
  import org.graalvm.compiler.microbenchmarks.graal.util.MethodSpec;
  import org.graalvm.compiler.nodes.StructuredGraph;
  
  /**
!  * Benchmarks the performance of {@link Graph#copy()}.
   */
  public class GraphCopyBenchmark extends GraalBenchmark {
  
      @MethodSpec(declaringClass = ConditionalEliminationBenchmark.class, name = "nullnessSnippet")
      public static class Nullness extends GraphState {
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  import org.graalvm.compiler.microbenchmarks.graal.util.GraphState;
  import org.graalvm.compiler.microbenchmarks.graal.util.MethodSpec;
  import org.graalvm.compiler.nodes.StructuredGraph;
  
  /**
!  * Benchmarks the performance of {@link Graph#copy(org.graalvm.compiler.debug.DebugContext)}.
   */
  public class GraphCopyBenchmark extends GraalBenchmark {
  
      @MethodSpec(declaringClass = ConditionalEliminationBenchmark.class, name = "nullnessSnippet")
      public static class Nullness extends GraphState {
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          }
      }
  
      @Benchmark
      @Warmup(iterations = 20)
!     public StructuredGraph nullness(Nullness s, @SuppressWarnings("unused") GraalState g) {
!         return (StructuredGraph) s.graph.copy();
      }
  
      @MethodSpec(declaringClass = GraphCopyBenchmark.class, name = "searchSnippet")
      public static class Search extends GraphState {
      }
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          }
      }
  
      @Benchmark
      @Warmup(iterations = 20)
!     public StructuredGraph nullness(Nullness s, GraalState g) {
!         return (StructuredGraph) s.graph.copy(g.debug);
      }
  
      @MethodSpec(declaringClass = GraphCopyBenchmark.class, name = "searchSnippet")
      public static class Search extends GraphState {
      }
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          } while (true);
      }
  
      @Benchmark
      @Warmup(iterations = 20)
!     public StructuredGraph search(Search s, @SuppressWarnings("unused") GraalState g) {
!         return (StructuredGraph) s.graph.copy();
      }
  }
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          } while (true);
      }
  
      @Benchmark
      @Warmup(iterations = 20)
!     public StructuredGraph search(Search s, GraalState g) {
!         return (StructuredGraph) s.graph.copy(g.debug);
      }
  }