Examples with LeftShiftNode org.graalvm.compiler.nodes.calc.LeftShiftNode used on opensource projects

Example 11 with LeftShiftNode

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

the class DefaultJavaLoweringProvider method createArrayAddress.

public AddressNode createArrayAddress(StructuredGraph graph, ValueNode array, JavaKind elementKind, ValueNode index) {
    ValueNode wordIndex;
    if (target.wordSize > 4) {
        wordIndex = graph.unique(new SignExtendNode(index, target.wordSize * 8));
    } else {
        assert target.wordSize == 4 : "unsupported word size";
        wordIndex = index;
    }
    int shift = CodeUtil.log2(arrayScalingFactor(elementKind));
    ValueNode scaledIndex = graph.unique(new LeftShiftNode(wordIndex, ConstantNode.forInt(shift, graph)));
    int base = arrayBaseOffset(elementKind);
    ValueNode offset = graph.unique(new AddNode(scaledIndex, ConstantNode.forIntegerKind(target.wordJavaKind, base, graph)));
    return graph.unique(new OffsetAddressNode(array, offset));
}