1//===------- LeonPasses.h - Define passes specific to LEON ----------------===//
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//
10//===----------------------------------------------------------------------===//
11
12#ifndef LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
13#define LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
14
15#include "llvm/CodeGen/MachineFunctionPass.h"
16
17namespace llvm {
18class SparcSubtarget;
19
20class LLVM_LIBRARY_VISIBILITY LEONMachineFunctionPass
21 : public MachineFunctionPass {
22protected:
23 const SparcSubtarget *Subtarget = nullptr;
24 const int LAST_OPERAND = -1;
25
26 // this vector holds free registers that we allocate in groups for some of the
27 // LEON passes
28 std::vector<int> UsedRegisters;
29
30protected:
31 LEONMachineFunctionPass(char &ID);
32
33 void clearUsedRegisterList() { UsedRegisters.clear(); }
34
35 void markRegisterUsed(int registerIndex) {
36 UsedRegisters.push_back(x: registerIndex);
37 }
38};
39
40class LLVM_LIBRARY_VISIBILITY ErrataWorkaround : public MachineFunctionPass {
41protected:
42 const SparcSubtarget *ST;
43 const TargetInstrInfo *TII;
44 const TargetRegisterInfo *TRI;
45
46 bool checkSeqTN0009A(MachineBasicBlock::iterator I);
47 bool checkSeqTN0009B(MachineBasicBlock::iterator I);
48 bool checkSeqTN0010First(MachineBasicBlock &MBB);
49 bool checkSeqTN0010(MachineBasicBlock::iterator I);
50 bool checkSeqTN0012(MachineBasicBlock::iterator I);
51 bool checkSeqTN0013(MachineBasicBlock::iterator I);
52
53 bool moveNext(MachineBasicBlock::iterator &I);
54 bool isFloat(MachineBasicBlock::iterator I);
55 bool isDivSqrt(MachineBasicBlock::iterator I);
56 bool isAtomic(MachineBasicBlock::iterator I);
57 void insertNop(MachineBasicBlock::iterator I);
58
59public:
60 static char ID;
61
62 ErrataWorkaround();
63 bool runOnMachineFunction(MachineFunction &MF) override;
64
65 StringRef getPassName() const override { return "Errata workaround pass"; };
66};
67
68class LLVM_LIBRARY_VISIBILITY InsertNOPLoad : public LEONMachineFunctionPass {
69public:
70 static char ID;
71
72 InsertNOPLoad();
73 bool runOnMachineFunction(MachineFunction &MF) override;
74
75 StringRef getPassName() const override {
76 return "InsertNOPLoad: Erratum Fix LBR35: insert a NOP instruction after "
77 "every single-cycle load instruction when the next instruction is "
78 "another load/store instruction";
79 }
80};
81
82class LLVM_LIBRARY_VISIBILITY DetectRoundChange
83 : public LEONMachineFunctionPass {
84public:
85 static char ID;
86
87 DetectRoundChange();
88 bool runOnMachineFunction(MachineFunction &MF) override;
89
90 StringRef getPassName() const override {
91 return "DetectRoundChange: Leon erratum detection: detect any rounding "
92 "mode change request: use only the round-to-nearest rounding mode";
93 }
94};
95
96class LLVM_LIBRARY_VISIBILITY FixAllFDIVSQRT : public LEONMachineFunctionPass {
97public:
98 static char ID;
99
100 FixAllFDIVSQRT();
101 bool runOnMachineFunction(MachineFunction &MF) override;
102
103 StringRef getPassName() const override {
104 return "FixAllFDIVSQRT: Erratum Fix LBR34: fix FDIVS/FDIVD/FSQRTS/FSQRTD "
105 "instructions with NOPs and floating-point store";
106 }
107};
108} // namespace llvm
109
110#endif // LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
111