Avoid createCallTarget() in vm.

Author: fniephaus

vm/src/org.graalvm.polybench.micro/src/org/graalvm/polybench/micro/Parser.java

@@ -25,7 +25,6 @@
 package org.graalvm.polybench.micro;
 
 import com.oracle.truffle.api.CallTarget;
-import com.oracle.truffle.api.Truffle;
 import com.oracle.truffle.api.source.Source;
 import org.graalvm.polybench.micro.expr.EvalExpression;
 import org.graalvm.polybench.micro.expr.EvalExpressionNodeGen;
@@ -85,7 +84,7 @@ CallTarget parseEverything(MicrobenchLanguage language) throws IOException {
         Microbench spec = parseMicrobenchStatement();
 
         SetupRootNode setupNode = SetupRootNodeGen.create(language, spec, preparedState);
-        return Truffle.getRuntime().createCallTarget(setupNode);
+        return setupNode.getCallTarget();
     }
 
     void parseDeclarations() throws IOException {

vm/src/org.graalvm.polybench.micro/src/org/graalvm/polybench/micro/nodes/SetupRootNode.java

@@ -26,7 +26,6 @@
 
 import com.oracle.truffle.api.CallTarget;
 import com.oracle.truffle.api.CompilerDirectives;
-import com.oracle.truffle.api.Truffle;
 import com.oracle.truffle.api.dsl.Bind;
 import com.oracle.truffle.api.dsl.Specialization;
 import com.oracle.truffle.api.frame.VirtualFrame;
@@ -52,7 +51,7 @@ public SetupRootNode(MicrobenchLanguage language, Microbench spec, Expression[]
         super(language);
         MicrobenchRootNode workloadRoot = new MicrobenchRootNode(language, spec);
 
-        this.workload = Truffle.getRuntime().createCallTarget(workloadRoot);
+        this.workload = workloadRoot.getCallTarget();
         this.prepare = prepare;
         this.spec = spec;
     }