Examples with FloatingReadPhase org.graalvm.compiler.phases.common.FloatingReadPhase used on opensource projects

Example 1 with FloatingReadPhase

use of org.graalvm.compiler.phases.common.FloatingReadPhase in project graal by oracle.

the class ConditionAnchoringTest method test.

public void test(String name, int ids) {
    StructuredGraph graph = parseEager(name, AllowAssumptions.YES);
    NodeIterable<RawLoadNode> unsafeNodes = graph.getNodes().filter(RawLoadNode.class);
    assertThat(unsafeNodes, hasCount(1));
    // lower unsafe load
    PhaseContext context = new PhaseContext(getProviders());
    LoweringPhase lowering = new LoweringPhase(new CanonicalizerPhase(), StandardLoweringStage.HIGH_TIER);
    lowering.apply(graph, context);
    unsafeNodes = graph.getNodes().filter(RawLoadNode.class);
    NodeIterable<ConditionAnchorNode> conditionAnchors = graph.getNodes().filter(ConditionAnchorNode.class);
    NodeIterable<ReadNode> reads = graph.getNodes().filter(ReadNode.class);
    assertThat(unsafeNodes, isEmpty());
    assertThat(conditionAnchors, hasCount(1));
    // 2 * ids id reads, 1 'field' access
    assertThat(reads, hasCount(2 * ids + 1));
    // float reads and canonicalize to give a chance to conditions to GVN
    FloatingReadPhase floatingReadPhase = new FloatingReadPhase();
    floatingReadPhase.apply(graph);
    CanonicalizerPhase canonicalizerPhase = new CanonicalizerPhase();
    canonicalizerPhase.apply(graph, context);
    NodeIterable<FloatingReadNode> floatingReads = graph.getNodes().filter(FloatingReadNode.class);
    // 1 id read, 1 'field' access
    assertThat(floatingReads, hasCount(ids + 1));
    new ConditionalEliminationPhase(false).apply(graph, context);
    floatingReads = graph.getNodes().filter(FloatingReadNode.class).filter(n -> ((FloatingReadNode) n).getLocationIdentity() instanceof ObjectLocationIdentity);
    conditionAnchors = graph.getNodes().filter(ConditionAnchorNode.class);
    assertThat(floatingReads, hasCount(1));
    assertThat(conditionAnchors, isEmpty());
    FloatingReadNode readNode = floatingReads.first();
    assertThat(readNode.getGuard(), instanceOf(BeginNode.class));
    assertThat(readNode.getGuard().asNode().predecessor(), instanceOf(IfNode.class));
}

Example 2 with FloatingReadPhase

use of org.graalvm.compiler.phases.common.FloatingReadPhase in project graal by oracle.

the class IfCanonicalizerTest method testCombinedIf.

private void testCombinedIf(String snippet, int count) {
    StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES);
    PhaseContext context = new PhaseContext(getProviders());
    new LoweringPhase(new CanonicalizerPhase(), LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context);
    new FloatingReadPhase().apply(graph);
    MidTierContext midContext = new MidTierContext(getProviders(), getTargetProvider(), OptimisticOptimizations.ALL, graph.getProfilingInfo());
    new GuardLoweringPhase().apply(graph, midContext);
    new LoweringPhase(new CanonicalizerPhase(), LoweringTool.StandardLoweringStage.MID_TIER).apply(graph, midContext);
    new CanonicalizerPhase().apply(graph, context);
    assertDeepEquals(count, graph.getNodes().filter(IfNode.class).count());
}

Example 3 with FloatingReadPhase

use of org.graalvm.compiler.phases.common.FloatingReadPhase in project graal by oracle.

the class ImplicitNullCheckTest method test.

@SuppressWarnings("try")
private void test(final String snippet) {
    DebugContext debug = getDebugContext();
    try (DebugContext.Scope s = debug.scope("FloatingReadTest", new DebugDumpScope(snippet))) {
        StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES, debug);
        PhaseContext context = new PhaseContext(getProviders());
        new LoweringPhase(new CanonicalizerPhase(), LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context);
        new FloatingReadPhase().apply(graph);
        MidTierContext midTierContext = new MidTierContext(getProviders(), getTargetProvider(), OptimisticOptimizations.ALL, graph.getProfilingInfo());
        new GuardLoweringPhase().apply(graph, midTierContext);
        Assert.assertEquals(0, graph.getNodes(DeoptimizeNode.TYPE).count());
        Assert.assertTrue(graph.getNodes().filter(ReadNode.class).first().canNullCheck());
    } catch (Throwable e) {
        throw debug.handle(e);
    }
}

Example 4 with FloatingReadPhase

use of org.graalvm.compiler.phases.common.FloatingReadPhase in project graal by oracle.

the class ReadAfterCheckCastTest method test.

@SuppressWarnings("try")
private void test(final String snippet) {
    DebugContext debug = getDebugContext();
    try (DebugContext.Scope s = debug.scope("ReadAfterCheckCastTest", new DebugDumpScope(snippet))) {
        // check shape of graph, with lots of assumptions. will probably fail if graph
        // structure changes significantly
        StructuredGraph graph = parseEager(snippet, AllowAssumptions.YES);
        PhaseContext context = new PhaseContext(getProviders());
        CanonicalizerPhase canonicalizer = new CanonicalizerPhase();
        new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, context);
        new FloatingReadPhase().apply(graph);
        canonicalizer.apply(graph, context);
        debug.dump(DebugContext.BASIC_LEVEL, graph, "After lowering");
        for (FloatingReadNode node : graph.getNodes(ParameterNode.TYPE).first().usages().filter(FloatingReadNode.class)) {
            // Checking that the parameter a is not directly used for the access to field
            // x10 (because x10 must be guarded by the checkcast).
            Assert.assertTrue(node.getLocationIdentity().isImmutable());
        }
    } catch (Throwable e) {
        throw debug.handle(e);
    }
}

Example 5 with FloatingReadPhase

use of org.graalvm.compiler.phases.common.FloatingReadPhase in project graal by oracle.

the class GuardPrioritiesTest method prepareGraph.

private StructuredGraph prepareGraph(String method) {
    StructuredGraph graph = parseEager(method, StructuredGraph.AllowAssumptions.YES);
    HighTierContext highTierContext = getDefaultHighTierContext();
    CanonicalizerPhase canonicalizer = new CanonicalizerPhase();
    new ConvertDeoptimizeToGuardPhase().apply(graph, highTierContext);
    new LoweringPhase(canonicalizer, LoweringTool.StandardLoweringStage.HIGH_TIER).apply(graph, highTierContext);
    new FloatingReadPhase().apply(graph);
    return graph;
}