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1 /*
2  * Copyright (c) 2021-2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef COMPILER_OPTIMIZER_OPTIMIZATIONS_SCHEDULER_H
17 #define COMPILER_OPTIMIZER_OPTIMIZATIONS_SCHEDULER_H
18 
19 #include "optimizer/ir/graph.h"
20 #include "compiler_options.h"
21 
22 namespace ark::compiler {
23 class Scheduler : public Optimization {
24 public:
Scheduler(Graph * graph)25     explicit Scheduler(Graph *graph)
26         : Optimization(graph),
27           sched_(graph->GetLocalAllocator()->Adapter()),
28           loads_(graph->GetLocalAllocator()->Adapter()),
29           stores_(graph->GetLocalAllocator()->Adapter()),
30           special_(graph->GetLocalAllocator()->Adapter()),
31           ssWithRuntimeCall_(graph->GetLocalAllocator()->Adapter()),
32           old_(graph->GetLocalAllocator()->Adapter()),
33           ocycle_(graph->GetLocalAllocator()->Adapter()),
34           numDeps_(graph->GetLocalAllocator()->Adapter()),
35           asap_(graph->GetLocalAllocator()->Adapter()),
36           prio_(graph->GetLocalAllocator()->Adapter()),
37           deps_(graph->GetLocalAllocator()->Adapter())
38     {
39     }
40 
41     NO_MOVE_SEMANTIC(Scheduler);
42     NO_COPY_SEMANTIC(Scheduler);
43     ~Scheduler() override = default;
44 
45     bool RunImpl() override;
46 
IsEnable()47     bool IsEnable() const override
48     {
49         return g_options.IsCompilerScheduling();
50     }
51 
GetPassName()52     const char *GetPassName() const override
53     {
54         return "Scheduler";
55     }
56 
57 private:
58     void AddDep(uint32_t *prio, Inst *from, Inst *to, uint32_t latency, Inst *barrier);
59     bool ScheduleBasicBlock(BasicBlock *bb);
60     bool BuildAllDeps(BasicBlock *bb);
61 
62     void ProcessInst(Inst *inst, uint32_t *numInst, uint32_t *numBetween, uint32_t *numSpecial, Inst **lastBarrier);
63     void ProcessMemory(Inst *inst, uint32_t *prio, Inst *lastBarrier);
64     void ProcessSpecial(Inst *inst, uint32_t *prio, Inst *lastBarrier);
65     void ProcessSpecialBoundsCheckI(Inst *inst, uint32_t *prio, Inst *lastBarrier);
66     void ProcessRefInst(Inst *inst, uint32_t *prio, Inst *lastBarrier);
67 
68     bool FinalizeBB(BasicBlock *bb, uint32_t cycle);
69     void Cleanup();
70 
71     void ScheduleBarrierInst(Inst **inst);
72     uint32_t ScheduleInstsBetweenBarriers(Inst *first, Inst *last);
73 
74     using SchedulerPriorityQueue = std::priority_queue<Inst *, InstVector, std::function<bool(Inst *, Inst *)>>;
75     uint32_t SchedWithGlued(Inst *inst, SchedulerPriorityQueue *waiting, uint32_t cycle);
76 
77     Marker mrk_ {};
78     uint32_t oprev_ {0};
79     uint32_t numBarriers_ {0};
80     uint32_t maxPrio_ {0};
81 
82     InstVector sched_;
83     InstVector loads_;
84     InstVector stores_;
85     InstVector special_;
86     InstVector ssWithRuntimeCall_;
87     ArenaUnorderedMap<Inst *, uint32_t> old_;
88     ArenaUnorderedMap<Inst *, uint32_t> ocycle_;
89     ArenaUnorderedMap<Inst *, uint32_t> numDeps_;
90     ArenaUnorderedMap<Inst *, uint32_t> asap_;
91     ArenaUnorderedMap<Inst *, uint32_t> prio_;
92     ArenaUnorderedMap<Inst *, ArenaUnorderedMap<Inst *, uint32_t>> deps_;
93 };
94 }  // namespace ark::compiler
95 
96 #endif  // COMPILER_OPTIMIZER_OPTIMIZATIONS_SCHEDULER_H
97