llvm::detail::PointerSumTypeHelper< TagT, MemberTs > Struct Template Reference

A helper template for implementing PointerSumType. More...

#include "llvm/ADT/PointerSumType.h"

Inheritance diagram for llvm::detail::PointerSumTypeHelper< TagT, MemberTs >:

Classes
struct	Checker
struct	Checker< MemberT >
struct	Lookup
struct	Min
struct	Min< V >

Public Types
enum	{ NumTagBits = Min<MemberTs::TraitsT::NumLowBitsAvailable...>::value }
enum	: uint64_t { PointerMask = static_cast<uint64_t>(-1) << NumTagBits , TagMask = ~PointerMask }

Static Public Member Functions
template<TagT N, typename PointerT , typename TraitsT >
static PointerSumTypeMember< N, PointerT, TraitsT >	LookupOverload (PointerSumTypeMember< N, PointerT, TraitsT > *)
template<TagT N>
static void	LookupOverload (...)

Static Public Attributes
static constexpr TagT	MinTag

Detailed Description

template<typename TagT, typename... MemberTs>
struct llvm::detail::PointerSumTypeHelper< TagT, MemberTs >

A helper template for implementing PointerSumType.

It provides fast compile-time lookup of the member from a particular tag value, along with useful constants and compile time checking infrastructure..

Definition at line 206 of file PointerSumType.h.

Member Enumeration Documentation

anonymous enum

template<typename TagT , typename... MemberTs>

anonymous enum

Enumerator
NumTagBits

Definition at line 237 of file PointerSumType.h.

anonymous enum

template<typename TagT , typename... MemberTs>

anonymous enum : uint64_t

Enumerator
PointerMask
TagMask

Definition at line 242 of file PointerSumType.h.

Member Function Documentation

LookupOverload() [1/2]

template<typename TagT , typename... MemberTs>

template<TagT N>

static void llvm::detail::PointerSumTypeHelper< TagT, MemberTs >::LookupOverload (   ... )

static

LookupOverload() [2/2]

template<typename TagT , typename... MemberTs>

template<TagT N, typename PointerT , typename TraitsT >

static PointerSumTypeMember< N, PointerT, TraitsT > llvm::detail::PointerSumTypeHelper< TagT, MemberTs >::LookupOverload ( PointerSumTypeMember< N, PointerT, TraitsT > *  )

static

Member Data Documentation

MinTag

template<typename TagT , typename... MemberTs>

constexpr TagT llvm::detail::PointerSumTypeHelper< TagT, MemberTs >::MinTag

staticconstexpr

Initial value:

=
      static_cast<TagT>(Min<MemberTs::Tag...>::value)

Definition at line 240 of file PointerSumType.h.

Referenced by llvm::PointerSumType< TagT, MemberTs >::getAddrOfZeroTagPointer().

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The documentation for this struct was generated from the following file:

• include/llvm/ADT/PointerSumType.h