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 * permitted provided that the following conditions are met:
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 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided
 * with the distribution.
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 * 3. Neither the name of the copyright holder nor the names of its contributors may be used to
 * endorse or promote products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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package com.oracle.truffle.llvm.parser.model.symbols.instructions;

import com.oracle.truffle.llvm.parser.model.SymbolTable;
import com.oracle.truffle.llvm.parser.model.enums.BinaryOperator;
import com.oracle.truffle.llvm.parser.model.enums.Flag;
import com.oracle.truffle.llvm.parser.model.visitors.SymbolVisitor;
import com.oracle.truffle.llvm.runtime.types.Type;
import com.oracle.truffle.llvm.runtime.types.VectorType;
import com.oracle.truffle.llvm.parser.model.SymbolImpl;

public final class BinaryOperationInstruction extends ValueInstruction {

    private final BinaryOperator operator;

    private final Flag[] flags;

    private SymbolImpl lhs;

    private SymbolImpl rhs;

    private BinaryOperationInstruction(Type type, BinaryOperator operator, Flag[] flags) {
        super(type);
        this.operator = operator;
        this.flags = flags;
    }

    @Override
    public void accept(SymbolVisitor visitor) {
        visitor.visit(this);
    }

    public Flag[] getFlags() {
        return flags;
    }

    public SymbolImpl getLHS() {
        return lhs;
    }

    public BinaryOperator getOperator() {
        return operator;
    }

    public SymbolImpl getRHS() {
        return rhs;
    }

    @Override
    public void replace(SymbolImpl original, SymbolImpl replacement) {
        if (lhs == original) {
            lhs = replacement;
        }
        if (rhs == original) {
            rhs = replacement;
        }
    }

    public static BinaryOperationInstruction fromSymbols(SymbolTable symbols, Type type, int opcode, int flags, int lhs, int rhs) {
        final boolean isFloatingPoint = Type.isFloatingpointType(type) || (type instanceof VectorType && Type.isFloatingpointType(((VectorType) type).getElementType()));
        final BinaryOperator operator = BinaryOperator.decode(opcode, isFloatingPoint);
        final BinaryOperationInstruction inst = new BinaryOperationInstruction(type, operator, Flag.decode(operator, flags));
        inst.lhs = symbols.getForwardReferenced(lhs, inst);
        inst.rhs = symbols.getForwardReferenced(rhs, inst);
        return inst;
    }
}