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 InsertNOPLoad : public LEONMachineFunctionPass {
41public:
42 static char ID;
43
44 InsertNOPLoad();
45 bool runOnMachineFunction(MachineFunction &MF) override;
46
47 StringRef getPassName() const override {
48 return "InsertNOPLoad: Erratum Fix LBR35: insert a NOP instruction after "
49 "every single-cycle load instruction when the next instruction is "
50 "another load/store instruction";
51 }
52};
53
54class LLVM_LIBRARY_VISIBILITY DetectRoundChange
55 : public LEONMachineFunctionPass {
56public:
57 static char ID;
58
59 DetectRoundChange();
60 bool runOnMachineFunction(MachineFunction &MF) override;
61
62 StringRef getPassName() const override {
63 return "DetectRoundChange: Leon erratum detection: detect any rounding "
64 "mode change request: use only the round-to-nearest rounding mode";
65 }
66};
67
68class LLVM_LIBRARY_VISIBILITY FixAllFDIVSQRT : public LEONMachineFunctionPass {
69public:
70 static char ID;
71
72 FixAllFDIVSQRT();
73 bool runOnMachineFunction(MachineFunction &MF) override;
74
75 StringRef getPassName() const override {
76 return "FixAllFDIVSQRT: Erratum Fix LBR34: fix FDIVS/FDIVD/FSQRTS/FSQRTD "
77 "instructions with NOPs and floating-point store";
78 }
79};
80} // namespace llvm
81
82#endif // LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
83