[GR-53468] Add support for beforeCompile policy hooks in the compile queue

PullRequest: graal/21511

Author: pdekanov

substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/code/CompileQueue.java

@@ -292,6 +292,9 @@ public Policy(HostedUniverse universe) {
         public void beforeEncode(HostedMethod method, StructuredGraph graph, HighTierContext context) {
         }
 
+        public void beforeCompile() {
+        }
+
         @SuppressWarnings("unused")
         public void afterMethodCompile(HostedMethod method, StructuredGraph graph) {
         }
@@ -458,6 +461,7 @@ public void finish(DebugContext debug) {
             assert suitesNotCreated();
             createSuites();
             try (ProgressReporter.ReporterClosable _ = reporter.printCompiling()) {
+                notifyBeforeCompile();
                 compileAll();
                 notifyAfterCompile();
             }
@@ -950,6 +954,12 @@ protected CompileTask createCompileTask(HostedMethod method, CompileReason reaso
         return new CompileTask(method, reason);
     }
 
+    private void notifyBeforeCompile() {
+        for (Policy policy : this.policies) {
+            policy.beforeCompile();
+        }
+    }
+
     protected void compileAll() throws InterruptedException {
         /*
          * We parse ahead of time compiled methods before deoptimization targets so that we remove