1 | //=- llvm/CodeGen/MultiHazardRecognizer.h - Scheduling Support ----*- C++ -*-=// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | // This file implements the MultiHazardRecognizer class, which is a wrapper |
10 | // for a set of ScheduleHazardRecognizer instances |
11 | // |
12 | //===----------------------------------------------------------------------===// |
13 | |
14 | #ifndef LLVM_CODEGEN_MULTIHAZARDRECOGNIZER_H |
15 | #define LLVM_CODEGEN_MULTIHAZARDRECOGNIZER_H |
16 | |
17 | #include "llvm/ADT/SmallVector.h" |
18 | #include "llvm/CodeGen/ScheduleHazardRecognizer.h" |
19 | |
20 | namespace llvm { |
21 | |
22 | class MachineInstr; |
23 | class SUnit; |
24 | |
25 | class MultiHazardRecognizer : public ScheduleHazardRecognizer { |
26 | SmallVector<std::unique_ptr<ScheduleHazardRecognizer>, 4> Recognizers; |
27 | |
28 | public: |
29 | MultiHazardRecognizer() = default; |
30 | void AddHazardRecognizer(std::unique_ptr<ScheduleHazardRecognizer> &&); |
31 | |
32 | bool atIssueLimit() const override; |
33 | HazardType getHazardType(SUnit *, int Stalls = 0) override; |
34 | void Reset() override; |
35 | void EmitInstruction(SUnit *) override; |
36 | void EmitInstruction(MachineInstr *) override; |
37 | unsigned PreEmitNoops(SUnit *) override; |
38 | unsigned PreEmitNoops(MachineInstr *) override; |
39 | bool ShouldPreferAnother(SUnit *) override; |
40 | void AdvanceCycle() override; |
41 | void RecedeCycle() override; |
42 | void EmitNoop() override; |
43 | }; |
44 | |
45 | } // end namespace llvm |
46 | |
47 | #endif // LLVM_CODEGEN_MULTIHAZARDRECOGNIZER_H |
48 | |