1 //===------- LeonPasses.h - Define passes specific to LEON ----------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 //===----------------------------------------------------------------------===//
13 #ifndef LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
14 #define LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
16 #include "llvm/CodeGen/MachineBasicBlock.h"
17 #include "llvm/CodeGen/MachineFunctionPass.h"
18 #include "llvm/CodeGen/Passes.h"
21 #include "SparcSubtarget.h"
24 class LLVM_LIBRARY_VISIBILITY LEONMachineFunctionPass
25 : public MachineFunctionPass {
27 const SparcSubtarget *Subtarget;
28 const int LAST_OPERAND = -1;
30 // this vector holds free registers that we allocate in groups for some of the
32 std::vector<int> UsedRegisters;
35 LEONMachineFunctionPass(char &ID);
37 int GetRegIndexForOperand(MachineInstr &MI, int OperandIndex);
38 void clearUsedRegisterList() { UsedRegisters.clear(); }
40 void markRegisterUsed(int registerIndex) {
41 UsedRegisters.push_back(registerIndex);
43 int getUnusedFPRegister(MachineRegisterInfo &MRI);
46 class LLVM_LIBRARY_VISIBILITY InsertNOPLoad : public LEONMachineFunctionPass {
51 bool runOnMachineFunction(MachineFunction &MF) override;
53 StringRef getPassName() const override {
54 return "InsertNOPLoad: Erratum Fix LBR35: insert a NOP instruction after "
55 "every single-cycle load instruction when the next instruction is "
56 "another load/store instruction";
60 class LLVM_LIBRARY_VISIBILITY FixFSMULD : public LEONMachineFunctionPass {
65 bool runOnMachineFunction(MachineFunction &MF) override;
67 StringRef getPassName() const override {
68 return "FixFSMULD: Erratum Fix LBR31: do not select FSMULD";
72 class LLVM_LIBRARY_VISIBILITY ReplaceFMULS : public LEONMachineFunctionPass {
77 bool runOnMachineFunction(MachineFunction &MF) override;
79 StringRef getPassName() const override {
80 return "ReplaceFMULS: Erratum Fix LBR32: replace FMULS instruction with a "
81 "routine using conversions/double precision operations to replace "
86 class LLVM_LIBRARY_VISIBILITY DetectRoundChange
87 : public LEONMachineFunctionPass {
92 bool runOnMachineFunction(MachineFunction &MF) override;
94 StringRef getPassName() const override {
95 return "DetectRoundChange: Leon erratum detection: detect any rounding "
96 "mode change request: use only the round-to-nearest rounding mode";
100 class LLVM_LIBRARY_VISIBILITY FixAllFDIVSQRT : public LEONMachineFunctionPass {
105 bool runOnMachineFunction(MachineFunction &MF) override;
107 StringRef getPassName() const override {
108 return "FixAllFDIVSQRT: Erratum Fix LBR34: fix FDIVS/FDIVD/FSQRTS/FSQRTD "
109 "instructions with NOPs and floating-point store";
114 #endif // LLVM_LIB_TARGET_SPARC_LEON_PASSES_H