[GR-61673] Refactorings loop utility APIs.

PullRequest: graal/19921

Author: davleopo

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/loop/phases/LoopSafepointEliminationPhase.java

@@ -304,13 +304,16 @@ private int disableSafepointsByBodyNodes(LoopSafepointPlan safepointPlan, Loop l
         }
 
         public LoopSafepointPlan optimizeSafepoints() {
+            LoopsData loops = context.getLoopsDataProvider().getLoopsData(graph);
+            loops.detectCountedLoops();
+            return optimizeSafepoints(loops);
+        }
+
+        public LoopSafepointPlan optimizeSafepoints(LoopsData loops) {
             LoopSafepointPlan graphWidePlan = new LoopSafepointPlan(graph);
 
             final boolean optimisticallyRemoveLoopSafepoints = Options.RemoveLoopSafepoints.getValue(graph.getOptions());
 
-            LoopsData loops = context.getLoopsDataProvider().getLoopsData(graph);
-            loops.detectCountedLoops();
-
             for (Loop loop : loops.loops()) {
                 if (!allowGuestSafepoints()) {
                     graphWidePlan.setGuestEndStateAllEnds(loop, SafepointState.MUST_NEVER_SAFEPOINT);

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/phases/common/LazyValue.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -51,4 +51,8 @@ public T get() {
         }
         return value;
     }
+
+    public boolean isAvailable() {
+        return value != null;
+    }
 }

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/phases/common/util/LoopUtility.java

@@ -254,9 +254,13 @@ public static boolean isInt(ValueNode v) {
      * @param canonicalizer must not be {@code null}, will be applied incrementally to nodes whose
      *            inputs changed
      */
-    @SuppressWarnings("try")
     public static void removeObsoleteProxies(StructuredGraph graph, CoreProviders context, CanonicalizerPhase canonicalizer) {
         LoopsData loopsData = context.getLoopsDataProvider().getLoopsData(graph);
+        removeObsoleteProxies(graph, context, canonicalizer, loopsData);
+    }
+
+    @SuppressWarnings("try")
+    public static void removeObsoleteProxies(StructuredGraph graph, CoreProviders context, CanonicalizerPhase canonicalizer, LoopsData loopsData) {
         final EconomicSetNodeEventListener inputChanges = new EconomicSetNodeEventListener(EnumSet.of(NodeEvent.INPUT_CHANGED));
         try (NodeEventScope s = graph.trackNodeEvents(inputChanges)) {
             for (Loop loop : loopsData.loops()) {