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#include "mkql_builtins_decimal.h" // Y_IGNORE
#include "mkql_builtins_compare.h"
#include <cmath>
namespace NKikimr {
namespace NMiniKQL {
namespace {
template <typename T, std::enable_if_t<std::is_integral<T>::value>* = nullptr>
inline T Max(T l, T r) {
return std::max(l, r);
}
template <typename T, std::enable_if_t<std::is_floating_point<T>::value>* = nullptr>
inline T Max(T l, T r) {
return std::fmax(l, r);
}
template<typename TLeft, typename TRight, typename TOutput>
struct TMax : public TSimpleArithmeticBinary<TLeft, TRight, TOutput, TMax<TLeft, TRight, TOutput>> {
static TOutput Do(TLeft left, TRight right)
{
return Max<TOutput>(left, right);
}
#ifndef MKQL_DISABLE_CODEGEN
static Value* Gen(Value* left, Value* right, const TCodegenContext& ctx, BasicBlock*& block)
{
if constexpr (std::is_floating_point<TOutput>()) {
auto& context = ctx.Codegen.GetContext();
auto& module = ctx.Codegen.GetModule();
const auto fnType = FunctionType::get(GetTypeFor<TOutput>(context), {left->getType(), right->getType()}, false);
const auto& name = GetFuncNameForType<TOutput>("llvm.maxnum");
const auto func = module.getOrInsertFunction(name, fnType).getCallee();
const auto res = CallInst::Create(fnType, func, {left, right}, "maxnum", block);
return res;
} else {
const auto check = CmpInst::Create(Instruction::ICmp, std::is_signed<TOutput>() ? ICmpInst::ICMP_SLT : ICmpInst::ICMP_ULT, left, right, "less", block);
const auto res = SelectInst::Create(check, right, left, "max", block);
return res;
}
}
#endif
};
template<typename TType>
struct TFloatAggrMax : public TSimpleArithmeticBinary<TType, TType, TType, TFloatAggrMax<TType>> {
static TType Do(TType left, TType right)
{
return left > right || std::isnan(left) ? left : right;
}
#ifndef MKQL_DISABLE_CODEGEN
static Value* Gen(Value* left, Value* right, const TCodegenContext&, BasicBlock*& block)
{
const auto ugt = CmpInst::Create(Instruction::FCmp, FCmpInst::FCMP_UGT, left, right, "greater", block);
const auto ord = CmpInst::Create(Instruction::FCmp, FCmpInst::FCMP_ORD, ConstantFP::get(right->getType(), 0.0), right, "ordered", block);
const auto both = BinaryOperator::CreateAnd(ugt, ord, "and", block);
return SelectInst::Create(both, left, right, "max", block);
}
#endif
};
template<typename TType>
using TAggrMax = std::conditional_t<std::is_floating_point<TType>::value, TFloatAggrMax<TType>, TMax<TType, TType, TType>>;
template<typename TType>
struct TTzMax : public TSelectArithmeticBinaryCopyTimezone<TType, TTzMax<TType>> {
static bool Do(TType left, TType right)
{
return left >= right;
}
#ifndef MKQL_DISABLE_CODEGEN
static Value* Gen(Value* left, Value* right, const TCodegenContext&, BasicBlock*& block)
{
return CmpInst::Create(Instruction::ICmp, ICmpInst::ICMP_UGE, left, right, "greater_or_equal", block);
}
#endif
};
template<typename TType>
struct TAggrTzMax : public TSelectArithmeticBinaryWithTimezone<TType, TAggrTzMax<TType>> {
static bool Do(TType left, TType right)
{
return left >= right;
}
static bool DoTz(ui16 left, ui16 right)
{
return left >= right;
}
#ifndef MKQL_DISABLE_CODEGEN
static Value* Gen(Value* left, Value* right, const TCodegenContext&, BasicBlock*& block)
{
return CmpInst::Create(Instruction::ICmp, ICmpInst::ICMP_UGE, left, right, "greater_value", block);
}
static Value* GenTz(Value* left, Value* right, const TCodegenContext&, BasicBlock*& block)
{
return CmpInst::Create(Instruction::ICmp, ICmpInst::ICMP_UGE, left, right, "greater_timezone", block);
}
#endif
};
template<NUdf::EDataSlot Slot>
struct TDecimalMax {
static NUdf::TUnboxedValuePod Execute(const NUdf::TUnboxedValuePod& left, const NUdf::TUnboxedValuePod& right) {
const auto rv = right.GetInt128();
if (!NYql::NDecimal::IsComparable(rv))
return left;
const auto lv = left.GetInt128();
if (!NYql::NDecimal::IsComparable(lv))
return right;
return NUdf::TUnboxedValuePod(lv < rv ? rv : lv);
}
#ifndef MKQL_DISABLE_CODEGEN
static Value* Generate(Value* left, Value* right, const TCodegenContext& ctx, BasicBlock*& block)
{
auto& context = ctx.Codegen.GetContext();
const auto next = BasicBlock::Create(context, "next", ctx.Func);
const auto good = BasicBlock::Create(context, "good", ctx.Func);
const auto done = BasicBlock::Create(context, "done", ctx.Func);
const auto result = PHINode::Create(Type::getInt128Ty(context), 3, "result", done);
const auto r = GetterForInt128(right, block);
const auto rok = NDecimal::GenIsComparable(r, context, block);
result->addIncoming(left, block);
BranchInst::Create(next, done, rok, block);
block = next;
const auto l = GetterForInt128(left, block);
const auto lok = NDecimal::GenIsComparable(l, context, block);
result->addIncoming(right, block);
BranchInst::Create(good, done, lok, block);
block = good;
const auto less = CmpInst::Create(Instruction::ICmp, ICmpInst::ICMP_SLT, l, r, "less", block);
const auto res = SelectInst::Create(less, right, left, "max", block);
result->addIncoming(res, block);
BranchInst::Create(done, block);
block = done;
return result;
}
#endif
};
template<NUdf::EDataSlot Slot>
struct TDecimalAggrMax {
static NUdf::TUnboxedValuePod Execute(const NUdf::TUnboxedValuePod& left, const NUdf::TUnboxedValuePod& right) {
const auto lv = left.GetInt128();
const auto rv = right.GetInt128();
return lv > rv ? left : right;
}
#ifndef MKQL_DISABLE_CODEGEN
static Value* Generate(Value* left, Value* right, const TCodegenContext&, BasicBlock*& block)
{
const auto l = GetterForInt128(left, block);
const auto r = GetterForInt128(right, block);
const auto greater = CmpInst::Create(Instruction::ICmp, ICmpInst::ICMP_SGT, l, r, "greater", block);
const auto res = SelectInst::Create(greater, left, right, "max", block);
return res;
}
#endif
};
template<NUdf::EDataSlot Slot>
struct TCustomMax {
static NUdf::TUnboxedValuePod Execute(NUdf::TUnboxedValuePod left, NUdf::TUnboxedValuePod right) {
const bool r = CompareCustoms<Slot>(left, right) < 0;
(r ? left : right).DeleteUnreferenced();
return r ? right : left;
}
#ifndef MKQL_DISABLE_CODEGEN
static Value* Generate(Value* left, Value* right, const TCodegenContext& ctx, BasicBlock*& block)
{
auto& context = ctx.Codegen.GetContext();
const auto res = CallBinaryUnboxedValueFunction(&CompareCustoms<Slot>, Type::getInt32Ty(context), left, right, ctx.Codegen, block);
const auto comp = CmpInst::Create(Instruction::ICmp, ICmpInst::ICMP_SLT, res, ConstantInt::get(res->getType(), 0), "less", block);
const auto min = SelectInst::Create(comp, left, right, "min", block);
ValueCleanup(EValueRepresentation::String, min, ctx, block);
const auto max = SelectInst::Create(comp, right, left, "max", block);
return max;
}
#endif
};
}
void RegisterMax(IBuiltinFunctionRegistry& registry) {
RegisterBinaryNumericFunctionOpt<TMax, TBinaryArgsOpt>(registry, "Max");
RegisterBooleanSameTypesFunction<TAggrMax, TBinaryArgsOpt>(registry, "Max");
RegisterDatetimeSameTypesFunction<TAggrMax, TBinaryArgsOpt>(registry, "Max");
RegisterTzDatetimeSameTypesFunction<TTzMax, TBinaryArgsOpt>(registry, "Max");
RegisterCustomSameTypesFunction<NUdf::TDataType<NUdf::TDecimal>, TDecimalMax, TBinaryArgsOpt>(registry, "Max");
RegisterCustomSameTypesFunction<NUdf::TDataType<char*>, TCustomMax, TBinaryArgsOpt>(registry, "Max");
RegisterCustomSameTypesFunction<NUdf::TDataType<NUdf::TUtf8>, TCustomMax, TBinaryArgsOpt>(registry, "Max");
}
void RegisterAggrMax(IBuiltinFunctionRegistry& registry) {
RegisterNumericAggregateFunction<TAggrMax, TBinaryArgsSameOpt>(registry, "AggrMax");
RegisterBooleanAggregateFunction<TAggrMax, TBinaryArgsSameOpt>(registry, "AggrMax");
RegisterDatetimeAggregateFunction<TAggrMax, TBinaryArgsSameOpt>(registry, "AggrMax");
RegisterBigDateAggregateFunction<TAggrMax, TBinaryArgsSameOpt>(registry, "AggrMax");
RegisterTzDatetimeAggregateFunction<TAggrTzMax, TBinaryArgsSameOpt>(registry, "AggrMax");
RegisterCustomAggregateFunction<NUdf::TDataType<NUdf::TDecimal>, TDecimalAggrMax, TBinaryArgsSameOpt>(registry, "AggrMax");
RegisterCustomAggregateFunction<NUdf::TDataType<char*>, TCustomMax, TBinaryArgsSameOpt>(registry, "AggrMax");
RegisterCustomAggregateFunction<NUdf::TDataType<NUdf::TUtf8>, TCustomMax, TBinaryArgsSameOpt>(registry, "AggrMax");
}
} // namespace NMiniKQL
} // namespace NKikimr
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