blob: 947db5e356ebdf115640319cb8bc19ed5e2f186a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_SCHEDULEHAZARDRECOGNIZER_H
#define RCC_CODEGEN_SCHEDULEHAZARDRECOGNIZER_H
#include "rcc/CodeGen/TargetSchedulingModel.h"
#include "rcc/Support/Error.h"
#include <cstddef>
#include <cstdint>
#include <memory>
#include <unordered_map>
#include <vector>
namespace rcc {
struct ScheduleUnit;
class ScheduleHazardRecognizer final {
public:
[[nodiscard]] static Expected<ScheduleHazardRecognizer>
create(const TargetSchedulingModel &Model,
ScheduleDirection Direction = ScheduleDirection::TopDown);
ScheduleHazardRecognizer(const ScheduleHazardRecognizer &Other);
ScheduleHazardRecognizer &operator=(const ScheduleHazardRecognizer &Other);
ScheduleHazardRecognizer(ScheduleHazardRecognizer &&) noexcept = default;
ScheduleHazardRecognizer &operator=(ScheduleHazardRecognizer &&) noexcept = default;
~ScheduleHazardRecognizer() = default;
[[nodiscard]] std::uint64_t currentCycle() const noexcept {
return CurrentCycle;
}
[[nodiscard]] Expected<bool> canIssue(const ScheduleUnit &Unit, std::uint64_t Cycle) const;
[[nodiscard]] Expected<std::uint64_t> earliestIssueCycle(const ScheduleUnit &Unit,
std::uint64_t Earliest) const;
[[nodiscard]] Expected<void> issue(const ScheduleUnit &Unit, std::uint64_t Cycle);
private:
struct ResourceState final {
ProcessorResourceID ID;
std::vector<std::uint64_t> AvailableAt;
};
ScheduleHazardRecognizer(const TargetSchedulingModel &Model, ScheduleDirection Direction) noexcept
: Model(&Model), Direction(Direction) {}
[[nodiscard]] Expected<void> reset();
[[nodiscard]] Expected<void> moveToCycle(std::uint64_t Cycle);
[[nodiscard]] Expected<void> issueImplementation(const ScheduleUnit &Unit, std::uint64_t Cycle);
[[nodiscard]] Expected<void> reserveResource(ProcessorResourceID Resource, std::uint32_t Cycles,
std::uint64_t Cycle);
const TargetSchedulingModel *Model;
ScheduleDirection Direction = ScheduleDirection::TopDown;
std::unique_ptr<TargetScheduleHazardRecognizer> TargetHazards;
std::vector<ResourceState> Resources;
std::unordered_map<ProcessorResourceID, std::size_t> ResourceIndexes;
std::uint64_t CurrentCycle = 0;
std::uint64_t DispatchAvailableAt = 0;
std::uint32_t IssuedMicroOps = 0;
std::uint32_t DispatchedUnits = 0;
};
} // namespace rcc
#endif // RCC_CODEGEN_SCHEDULEHAZARDRECOGNIZER_H
|
