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 * endorse or promote products derived from this software without specific prior written
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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package com.oracle.truffle.llvm.nodes.cast;

import com.oracle.truffle.api.dsl.NodeChild;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.llvm.runtime.nodes.api.LLVMExpressionNode;
import com.oracle.truffle.llvm.runtime.vector.LLVMI32Vector;
import com.oracle.truffle.llvm.runtime.vector.LLVMI8Vector;

@NodeChild(value = "fromNode", type = LLVMExpressionNode.class)
public abstract class LLVMVectorToVectorNode extends LLVMExpressionNode {

    public abstract static class LLVMAnyVectorToI8VectorNode extends LLVMVectorToVectorNode {

        @Specialization
        public LLVMI8Vector doI32(LLVMI32Vector from) {
            // Checkstyle: stop magic number name check
            byte[] vector = new byte[from.getLength() * I32_SIZE_IN_BYTES];
            for (int i = 0; i < from.getLength() * I32_SIZE_IN_BYTES; i = i + I32_SIZE_IN_BYTES) {
                int value = from.getValue(i);
                vector[i + 0] = (byte) (value >>> 24);
                vector[i + 1] = (byte) (value >>> 16);
                vector[i + 2] = (byte) (value >>> 8);
                vector[i + 3] = (byte) value;
            }
            return LLVMI8Vector.create(vector);
            // Checkstyle: resume magic number name check
        }
    }
}