1 | #include <Functions/FunctionFactory.h> |
2 | #include <Functions/FunctionBinaryArithmetic.h> |
3 | |
4 | namespace DB |
5 | { |
6 | |
7 | template <typename A, typename B> |
8 | struct BitShiftRightImpl |
9 | { |
10 | using ResultType = typename NumberTraits::ResultOfBit<A, B>::Type; |
11 | |
12 | template <typename Result = ResultType> |
13 | static inline NO_SANITIZE_UNDEFINED Result apply(A a, B b) |
14 | { |
15 | return static_cast<Result>(a) >> static_cast<Result>(b); |
16 | } |
17 | |
18 | #if USE_EMBEDDED_COMPILER |
19 | static constexpr bool compilable = true; |
20 | |
21 | static inline llvm::Value * compile(llvm::IRBuilder<> & b, llvm::Value * left, llvm::Value * right, bool is_signed) |
22 | { |
23 | if (!left->getType()->isIntegerTy()) |
24 | throw Exception("BitShiftRightImpl expected an integral type" , ErrorCodes::LOGICAL_ERROR); |
25 | return is_signed ? b.CreateAShr(left, right) : b.CreateLShr(left, right); |
26 | } |
27 | #endif |
28 | }; |
29 | |
30 | struct NameBitShiftRight { static constexpr auto name = "bitShiftRight" ; }; |
31 | using FunctionBitShiftRight = FunctionBinaryArithmetic<BitShiftRightImpl, NameBitShiftRight>; |
32 | |
33 | void registerFunctionBitShiftRight(FunctionFactory & factory) |
34 | { |
35 | factory.registerFunction<FunctionBitShiftRight>(); |
36 | } |
37 | |
38 | } |
39 | |