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comparison llvm/lib/Target/Hexagon/RDFCopy.h @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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147:c2174574ed3a 150:1d019706d866
1 //===- RDFCopy.h ------------------------------------------------*- 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 #ifndef LLVM_LIB_TARGET_HEXAGON_RDFCOPY_H
10 #define LLVM_LIB_TARGET_HEXAGON_RDFCOPY_H
11
12 #include "RDFGraph.h"
13 #include "RDFLiveness.h"
14 #include "RDFRegisters.h"
15 #include "llvm/CodeGen/MachineFunction.h"
16 #include <map>
17 #include <vector>
18
19 namespace llvm {
20
21 class MachineBasicBlock;
22 class MachineDominatorTree;
23 class MachineInstr;
24
25 namespace rdf {
26
27 struct CopyPropagation {
28 CopyPropagation(DataFlowGraph &dfg) : MDT(dfg.getDT()), DFG(dfg),
29 L(dfg.getMF().getRegInfo(), dfg) {}
30
31 virtual ~CopyPropagation() = default;
32
33 bool run();
34 void trace(bool On) { Trace = On; }
35 bool trace() const { return Trace; }
36 DataFlowGraph &getDFG() { return DFG; }
37
38 using EqualityMap = std::map<RegisterRef, RegisterRef>;
39
40 virtual bool interpretAsCopy(const MachineInstr *MI, EqualityMap &EM);
41
42 private:
43 const MachineDominatorTree &MDT;
44 DataFlowGraph &DFG;
45 Liveness L;
46 bool Trace = false;
47
48 // map: statement -> (map: dst reg -> src reg)
49 std::map<NodeId, EqualityMap> CopyMap;
50 std::vector<NodeId> Copies;
51
52 void recordCopy(NodeAddr<StmtNode*> SA, EqualityMap &EM);
53 bool scanBlock(MachineBasicBlock *B);
54 NodeId getLocalReachingDef(RegisterRef RefRR, NodeAddr<InstrNode*> IA);
55 };
56
57 } // end namespace rdf
58
59 } // end namespace llvm
60
61 #endif // LLVM_LIB_TARGET_HEXAGON_RDFCOPY_H