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#include "mkql_builtins_impl.h" // Y_IGNORE
namespace NKikimr {
namespace NMiniKQL {
namespace {
template<typename TInput, typename TOutput>
struct TRotRight : public TShiftArithmeticBinary<TInput, TOutput, TRotRight<TInput, TOutput>> {
static TOutput Do(TInput arg, ui8 bits)
{
bits %= (sizeof(arg) * CHAR_BIT);
return bits ? ((arg >> bits) | (arg << (sizeof(arg) * CHAR_BIT - bits))) : arg;
}
#ifndef MKQL_DISABLE_CODEGEN
static Value* Gen(Value* arg, Value* bits, const TCodegenContext&, BasicBlock*& block)
{
const auto maxb = ConstantInt::get(arg->getType(), sizeof(TInput) * CHAR_BIT);
const auto zext = arg->getType() == bits->getType() ? bits : new ZExtInst(bits, arg->getType(), "zext", block);
const auto rem = BinaryOperator::CreateURem(zext, maxb, "rem", block);
const auto lshr = BinaryOperator::CreateLShr(arg, rem, "lshr", block);
const auto sub = BinaryOperator::CreateSub(maxb, rem, "sub", block);
const auto shl = BinaryOperator::CreateShl(arg, sub, "shl", block);
const auto res = BinaryOperator::CreateOr(shl, lshr, "res", block);
return res;
}
#endif
};
}
void RegisterRotRight(IBuiltinFunctionRegistry& registry) {
RegisterUnsignedShiftFunctionOpt<TRotRight, TBinaryShiftArgsOpt>(registry, "RotRight");
}
} // namespace NMiniKQL
} // namespace NKikimr
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