Examples with IfNode org.graalvm.compiler.nodes.IfNode used on opensource projects

Example 26 with IfNode

use of org.graalvm.compiler.nodes.IfNode in project graal by oracle.

the class LoopTransformations method findUnswitchable.

public static List<ControlSplitNode> findUnswitchable(LoopEx loop) {
    List<ControlSplitNode> controls = null;
    ValueNode invariantValue = null;
    for (IfNode ifNode : loop.whole().nodes().filter(IfNode.class)) {
        if (loop.isOutsideLoop(ifNode.condition())) {
            if (controls == null) {
                invariantValue = ifNode.condition();
                controls = new ArrayList<>();
                controls.add(ifNode);
            } else if (ifNode.condition() == invariantValue) {
                controls.add(ifNode);
            }
        }
    }
    if (controls == null) {
        SwitchNode firstSwitch = null;
        for (SwitchNode switchNode : loop.whole().nodes().filter(SwitchNode.class)) {
            if (switchNode.successors().count() > 1 && loop.isOutsideLoop(switchNode.value())) {
                if (controls == null) {
                    firstSwitch = switchNode;
                    invariantValue = switchNode.value();
                    controls = new ArrayList<>();
                    controls.add(switchNode);
                } else if (switchNode.value() == invariantValue && firstSwitch.structureEquals(switchNode)) {
                    // Only collect switches which test the same values in the same order
                    controls.add(switchNode);
                }
            }
        }
    }
    return controls;
}

Example 27 with IfNode

use of org.graalvm.compiler.nodes.IfNode in project graal by oracle.

the class UseTrappingNullChecksPhase method checkPredecessor.

private static void checkPredecessor(AbstractDeoptimizeNode deopt, Node predecessor, DeoptimizationReason deoptimizationReason, long implicitNullCheckLimit) {
    Node current = predecessor;
    AbstractBeginNode branch = null;
    while (current instanceof AbstractBeginNode) {
        branch = (AbstractBeginNode) current;
        if (branch.anchored().isNotEmpty()) {
            // some input of the deopt framestate is anchored to this branch
            return;
        }
        current = current.predecessor();
    }
    if (current instanceof IfNode) {
        IfNode ifNode = (IfNode) current;
        if (branch != ifNode.trueSuccessor()) {
            return;
        }
        LogicNode condition = ifNode.condition();
        if (condition instanceof IsNullNode) {
            replaceWithTrappingNullCheck(deopt, ifNode, condition, deoptimizationReason, implicitNullCheckLimit);
        }
    }
}