9#ifndef LLVM_ADT_BITMASKENUM_H
10#define LLVM_ADT_BITMASKENUM_H
41#define LLVM_MARK_AS_BITMASK_ENUM(LargestValue) \
42 LLVM_BITMASK_LARGEST_ENUMERATOR = LargestValue
55#define LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE() \
56 using ::llvm::BitmaskEnumDetail::operator~; \
57 using ::llvm::BitmaskEnumDetail::operator|; \
58 using ::llvm::BitmaskEnumDetail::operator&; \
59 using ::llvm::BitmaskEnumDetail::operator^; \
60 using ::llvm::BitmaskEnumDetail::operator|=; \
61 using ::llvm::BitmaskEnumDetail::operator&=; \
63 using ::llvm::BitmaskEnumDetail::operator^=
69template <
typename E,
typename Enable =
void>
74 E,
std::enable_if_t<sizeof(E::LLVM_BITMASK_LARGEST_ENUMERATOR) >= 0>>
76namespace BitmaskEnumDetail {
80template <
typename E>
constexpr std::underlying_type_t<E>
Mask() {
83 return NextPowerOf2(
static_cast<std::underlying_type_t<E>
>(
84 E::LLVM_BITMASK_LARGEST_ENUMERATOR)) -
90template <
typename E>
constexpr std::underlying_type_t<E>
Underlying(
E Val) {
91 auto U =
static_cast<std::underlying_type_t<E>
>(Val);
92 assert(U >= 0 &&
"Negative enum values are not allowed.");
93 assert(U <= Mask<E>() &&
"Enum value too large (or largest val too small?)");
101template <typename E, typename = std::enable_if_t<is_bitmask_enum<E>::value>>
103 return static_cast<E>(~Underlying(Val) & Mask<E>());
106template <typename E, typename = std::enable_if_t<is_bitmask_enum<E>::value>>
111template <typename E, typename = std::enable_if_t<is_bitmask_enum<E>::value>>
116template <typename E, typename = std::enable_if_t<is_bitmask_enum<E>::value>>
124template <typename E, typename = std::enable_if_t<is_bitmask_enum<E>::value>>
130template <typename E, typename = std::enable_if_t<is_bitmask_enum<E>::value>>
136template <typename E, typename = std::enable_if_t<is_bitmask_enum<E>::value>>
146template <typename E, typename = std::enable_if_t<is_bitmask_enum<E>::value>>
148 static_cast<std::underlying_type_t<E>
>(
149 E::LLVM_BITMASK_LARGEST_ENUMERATOR)});
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
LLVM Value Representation.
constexpr E operator^(E LHS, E RHS)
constexpr E operator~(E Val)
constexpr unsigned bitWidth(uint64_t Value)
constexpr std::underlying_type_t< E > Underlying(E Val)
Check that Val is in range for E, and return Val cast to E's underlying type.
constexpr std::underlying_type_t< E > Mask()
Get a bitmask with 1s in all places up to the high-order bit of E's largest value.
E & operator^=(E &LHS, E RHS)
E & operator&=(E &LHS, E RHS)
constexpr E operator&(E LHS, E RHS)
E & operator|=(E &LHS, E RHS)
constexpr E operator|(E LHS, E RHS)
This is an optimization pass for GlobalISel generic memory operations.
LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE()
constexpr unsigned BitWidth
constexpr uint64_t NextPowerOf2(uint64_t A)
Returns the next power of two (in 64-bits) that is strictly greater than A.
Traits class to determine whether an enum has a LLVM_BITMASK_LARGEST_ENUMERATOR enumerator.