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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_MACHINEBASICBLOCKATTRIBUTES_H
#define RCC_CODEGEN_MACHINEBASICBLOCKATTRIBUTES_H
#include "rcc/CodeGen/MachineIRTypes.h"
#include "rcc/Support/Error.h"
#include <cstdint>
#include <optional>
#include <string>
#include <string_view>
namespace rcc {
enum class MachineBasicBlockAttribute : std::uint8_t {
MachineBlockAddressTaken,
IRBlockAddressTaken,
LandingPad,
InlineAsmBrIndirectTarget,
EHFuncletEntry,
EHScopeEntry,
Count,
};
[[nodiscard]] std::string_view
getMachineBasicBlockAttributeName(MachineBasicBlockAttribute Attribute) noexcept;
enum class MachineBasicBlockSectionKind : std::uint8_t {
Numbered,
Exception,
Cold,
};
class MachineBasicBlockSectionID final {
public:
constexpr MachineBasicBlockSectionID() noexcept = default;
[[nodiscard]] static constexpr MachineBasicBlockSectionID
numbered(std::uint32_t Number) noexcept {
return MachineBasicBlockSectionID(MachineBasicBlockSectionKind::Numbered, Number);
}
[[nodiscard]] static constexpr MachineBasicBlockSectionID exception() noexcept {
return MachineBasicBlockSectionID(MachineBasicBlockSectionKind::Exception, 0);
}
[[nodiscard]] static constexpr MachineBasicBlockSectionID cold() noexcept {
return MachineBasicBlockSectionID(MachineBasicBlockSectionKind::Cold, 0);
}
[[nodiscard]] constexpr MachineBasicBlockSectionKind kind() const noexcept {
return Kind;
}
[[nodiscard]] constexpr std::uint32_t number() const noexcept {
return Number;
}
[[nodiscard]] constexpr bool isDefault() const noexcept {
return Kind == MachineBasicBlockSectionKind::Numbered && Number == 0;
}
friend constexpr bool operator==(MachineBasicBlockSectionID Left,
MachineBasicBlockSectionID Right) noexcept = default;
private:
constexpr MachineBasicBlockSectionID(MachineBasicBlockSectionKind Kind,
std::uint32_t Number) noexcept
: Kind(Kind), Number(Number) {}
MachineBasicBlockSectionKind Kind = MachineBasicBlockSectionKind::Numbered;
std::uint32_t Number = 0;
};
struct MachineBasicBlockProfileID final {
std::uint32_t BaseID = 0;
std::uint32_t CloneID = 0;
friend constexpr bool operator==(MachineBasicBlockProfileID Left,
MachineBasicBlockProfileID Right) noexcept = default;
};
class MachineBasicBlockAttributes final {
public:
MachineBasicBlockAttributes() = default;
[[nodiscard]] static Expected<MachineBasicBlockAttributes> fromRawFlags(std::uint8_t RawFlags);
[[nodiscard]] bool has(MachineBasicBlockAttribute Attribute) const noexcept {
if (!isValidAttribute(Attribute))
return false;
return (Flags & flagFor(Attribute)) != 0;
}
void set(MachineBasicBlockAttribute Attribute) noexcept {
if (isValidAttribute(Attribute))
Flags |= flagFor(Attribute);
}
void clear(MachineBasicBlockAttribute Attribute) noexcept {
if (isValidAttribute(Attribute))
Flags &= static_cast<std::uint8_t>(~flagFor(Attribute));
}
[[nodiscard]] std::uint8_t rawFlags() const noexcept {
return Flags;
}
[[nodiscard]] std::optional<std::string_view> name() const noexcept {
if (!Name)
return std::nullopt;
return *Name;
}
[[nodiscard]] Expected<void> setName(std::string NewName);
void clearName() noexcept {
Name.reset();
}
[[nodiscard]] std::optional<std::string_view> irBlockName() const noexcept {
if (!IRBlockName)
return std::nullopt;
return *IRBlockName;
}
[[nodiscard]] Expected<void> setIRBlockName(std::string NewName);
void clearIRBlockName() noexcept {
IRBlockName.reset();
}
[[nodiscard]] Alignment alignment() const noexcept {
return BlockAlignment;
}
void setAlignment(Alignment NewAlignment) noexcept {
BlockAlignment = NewAlignment;
}
void clearAlignment() noexcept {
BlockAlignment = Alignment{};
}
[[nodiscard]] MachineBasicBlockSectionID sectionID() const noexcept {
return SectionID;
}
void setSectionID(MachineBasicBlockSectionID NewSectionID) noexcept {
SectionID = NewSectionID;
}
[[nodiscard]] const std::optional<MachineBasicBlockProfileID> &profileID() const noexcept {
return ProfileID;
}
void setProfileID(MachineBasicBlockProfileID NewProfileID) noexcept {
ProfileID = NewProfileID;
}
void clearProfileID() noexcept {
ProfileID.reset();
}
[[nodiscard]] std::uint32_t callFrameSize() const noexcept {
return CallFrameSize;
}
void setCallFrameSize(std::uint32_t Size) noexcept {
CallFrameSize = Size;
}
[[nodiscard]] Expected<void> verify() const;
friend bool operator==(const MachineBasicBlockAttributes &Left,
const MachineBasicBlockAttributes &Right) = default;
private:
static constexpr std::uint8_t AttributeCount =
static_cast<std::uint8_t>(MachineBasicBlockAttribute::Count);
static_assert(AttributeCount < 8);
static constexpr std::uint8_t ValidFlags =
static_cast<std::uint8_t>((std::uint8_t{1} << AttributeCount) - 1);
[[nodiscard]] static constexpr bool
isValidAttribute(MachineBasicBlockAttribute Attribute) noexcept {
return static_cast<std::uint8_t>(Attribute) < AttributeCount;
}
[[nodiscard]] static constexpr std::uint8_t
flagFor(MachineBasicBlockAttribute Attribute) noexcept {
return static_cast<std::uint8_t>(std::uint8_t{1} << static_cast<std::uint8_t>(Attribute));
}
std::uint8_t Flags = 0;
std::optional<std::string> Name;
std::optional<std::string> IRBlockName;
Alignment BlockAlignment;
MachineBasicBlockSectionID SectionID;
std::optional<MachineBasicBlockProfileID> ProfileID;
std::uint32_t CallFrameSize = 0;
};
} // namespace rcc
#endif // RCC_CODEGEN_MACHINEBASICBLOCKATTRIBUTES_H
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