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/*========================== begin_copyright_notice ============================
Copyright (C) 2019-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#ifndef VC_UTILS_GENX_REGCATEGORY_H
#define VC_UTILS_GENX_REGCATEGORY_H
#include "vc/Utils/General/EnumUtils.h"
#include <llvm/ADT/StringRef.h>
#include <type_traits>
#include <utility>
namespace vc {
// The encoding for register category, used in GenXCategory,
// GenXLiveness and GenXVisaRegAlloc. It is an anonymous enum inside a class
// rather than a named enum so you don't need to cast to/from int.
//
// Please update the following functions when changing this enum:
// isRealCategory
// isMaskCategory
// getRegCategoryName
// getRegCategoryShortName
enum class RegCategory : uint8_t {
None,
General,
Address,
Predicate,
Sampler,
Surface,
EM,
RM,
LastCategory = RM
};
constexpr size_t numRegCategories() {
return static_cast<size_t>(RegCategory::LastCategory) + 1;
}
constexpr bool checkRegCategory(RegCategory Category) {
auto IntCat = static_cast<std::underlying_type_t<RegCategory>>(Category);
if (IntCat >= vc::numRegCategories())
return false;
return true;
}
constexpr bool isRealCategory(RegCategory Category) {
switch (Category) {
case vc::RegCategory::General:
case vc::RegCategory::Address:
case vc::RegCategory::Predicate:
case vc::RegCategory::Sampler:
case vc::RegCategory::Surface:
return true;
case vc::RegCategory::None:
case vc::RegCategory::EM:
case vc::RegCategory::RM:
return false;
}
IGC_ASSERT_MESSAGE(
false,
"New RegCategory was added, but isRealCategory func was not updated");
return false;
}
constexpr bool isRealOrNoneCategory(RegCategory Category) {
return isRealCategory(Category) || Category == RegCategory::None;
}
constexpr bool isMaskCategory(RegCategory Category) {
switch (Category) {
case vc::RegCategory::None:
case vc::RegCategory::General:
case vc::RegCategory::Address:
case vc::RegCategory::Predicate:
case vc::RegCategory::Sampler:
case vc::RegCategory::Surface:
return false;
case vc::RegCategory::EM:
case vc::RegCategory::RM:
return true;
}
IGC_ASSERT_MESSAGE(
false,
"New RegCategory was added, but isMaskCategory func was not updated");
return false;
}
template <typename SequenceContainer>
constexpr auto &&accessContainer(SequenceContainer &&SC, RegCategory Category) {
return SC[static_cast<size_t>(Category)];
}
using RegCategoryIterator =
EnumIterator<RegCategory, RegCategory::LastCategory>;
class RegCategoryView final {};
constexpr RegCategoryIterator begin(RegCategoryView) {
return RegCategory::None;
}
constexpr RegCategoryIterator end(RegCategoryView) { return {}; }
// Get name of register category for debugging purposes.
// For anything unknown "???" is returned.
llvm::StringRef getRegCategoryName(RegCategory Category);
// Get short code of register category for debugging purposes.
// For None "-" is returned, for anything unknown -- "?".
llvm::StringRef getRegCategoryShortName(RegCategory Category);
} // namespace vc
#endif // VC_UTILS_GENX_REGCATEGORY_H
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