Examples with AnchoringNode org.graalvm.compiler.nodes.extended.AnchoringNode used on opensource projects

Example 1 with AnchoringNode

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

the class MethodHandleNode method maybeCastArgument.

/**
 * Inserts a node to cast the argument at index to the given type if the given type is more
 * concrete than the argument type.
 *
 * @param adder
 * @param index of the argument to be cast
 * @param type the type the argument should be cast to
 */
private static void maybeCastArgument(GraphAdder adder, ValueNode[] arguments, int index, JavaType type) {
    ValueNode argument = arguments[index];
    if (type instanceof ResolvedJavaType && !((ResolvedJavaType) type).isJavaLangObject()) {
        Assumptions assumptions = adder.getAssumptions();
        TypeReference targetType = TypeReference.create(assumptions, (ResolvedJavaType) type);
        /*
             * When an argument is a Word type, we can have a mismatch of primitive/object types
             * here. Not inserting a PiNode is a safe fallback, and Word types need no additional
             * type information anyway.
             */
        if (targetType != null && !targetType.getType().isPrimitive() && !argument.getStackKind().isPrimitive()) {
            ResolvedJavaType argumentType = StampTool.typeOrNull(argument.stamp(NodeView.DEFAULT));
            if (argumentType == null || (argumentType.isAssignableFrom(targetType.getType()) && !argumentType.equals(targetType.getType()))) {
                LogicNode inst = InstanceOfNode.createAllowNull(targetType, argument, null, null);
                assert !inst.isAlive();
                if (!inst.isTautology()) {
                    inst = adder.add(inst);
                    AnchoringNode guardAnchor = adder.getGuardAnchor();
                    DeoptimizationReason reason = DeoptimizationReason.ClassCastException;
                    DeoptimizationAction action = DeoptimizationAction.InvalidateRecompile;
                    JavaConstant speculation = JavaConstant.NULL_POINTER;
                    GuardingNode guard;
                    if (guardAnchor == null) {
                        FixedGuardNode fixedGuard = adder.add(new FixedGuardNode(inst, reason, action, speculation, false));
                        guard = fixedGuard;
                    } else {
                        GuardNode newGuard = adder.add(new GuardNode(inst, guardAnchor, reason, action, false, speculation));
                        adder.add(new ValueAnchorNode(newGuard));
                        guard = newGuard;
                    }
                    ValueNode valueNode = adder.add(PiNode.create(argument, StampFactory.object(targetType), guard.asNode()));
                    arguments[index] = valueNode;
                }
            }
        }
    }
}