Examples with DerivedInductionVariable org.graalvm.compiler.nodes.loop.DerivedInductionVariable used on opensource projects

Example 1 with DerivedInductionVariable

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

the class AMD64HotSpotAddressLowering method tryOptimize.

private static void tryOptimize(OffsetAddressNode offsetAddress, LoopEx loop) {
    EconomicMap<Node, InductionVariable> ivs = loop.getInductionVariables();
    InductionVariable currentIV = ivs.get(offsetAddress.getOffset());
    while (currentIV != null) {
        if (!(currentIV instanceof DerivedInductionVariable)) {
            break;
        }
        ValueNode currentValue = currentIV.valueNode();
        if (currentValue.isDeleted()) {
            break;
        }
        if (currentValue instanceof ZeroExtendNode) {
            ZeroExtendNode zeroExtendNode = (ZeroExtendNode) currentValue;
            if (applicableToImplicitZeroExtend(zeroExtendNode)) {
                ValueNode input = zeroExtendNode.getValue();
                if (input instanceof AddNode) {
                    AddNode add = (AddNode) input;
                    if (add.getX().isConstant()) {
                        optimizeAdd(zeroExtendNode, (ConstantNode) add.getX(), add.getY(), loop);
                    } else if (add.getY().isConstant()) {
                        optimizeAdd(zeroExtendNode, (ConstantNode) add.getY(), add.getX(), loop);
                    }
                }
            }
        }
        currentIV = ((DerivedInductionVariable) currentIV).getBase();
    }
}