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//===------- LeonPasses.h - Define passes specific to LEON ----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
#define LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
#include "llvm/CodeGen/MachineFunctionPass.h"
namespace llvm {
class SparcSubtarget;
class LLVM_LIBRARY_VISIBILITY LEONMachineFunctionPass
: public MachineFunctionPass {
protected:
const SparcSubtarget *Subtarget = nullptr;
const int LAST_OPERAND = -1;
// this vector holds free registers that we allocate in groups for some of the
// LEON passes
std::vector<int> UsedRegisters;
protected:
LEONMachineFunctionPass(char &ID);
void clearUsedRegisterList() { UsedRegisters.clear(); }
void markRegisterUsed(int registerIndex) {
UsedRegisters.push_back(registerIndex);
}
};
class LLVM_LIBRARY_VISIBILITY ErrataWorkaround : public MachineFunctionPass {
protected:
const SparcSubtarget *ST;
const TargetInstrInfo *TII;
const TargetRegisterInfo *TRI;
bool checkSeqTN0009A(MachineBasicBlock::iterator I);
bool checkSeqTN0009B(MachineBasicBlock::iterator I);
bool checkSeqTN0010First(MachineBasicBlock &MBB);
bool checkSeqTN0010(MachineBasicBlock::iterator I);
bool checkSeqTN0012(MachineBasicBlock::iterator I);
bool checkSeqTN0013(MachineBasicBlock::iterator I);
bool moveNext(MachineBasicBlock::iterator &I);
bool isFloat(MachineBasicBlock::iterator I);
bool isDivSqrt(MachineBasicBlock::iterator I);
void insertNop(MachineBasicBlock::iterator I);
public:
static char ID;
ErrataWorkaround();
bool runOnMachineFunction(MachineFunction &MF) override;
StringRef getPassName() const override { return "Errata workaround pass"; };
};
class LLVM_LIBRARY_VISIBILITY InsertNOPLoad : public LEONMachineFunctionPass {
public:
static char ID;
InsertNOPLoad();
bool runOnMachineFunction(MachineFunction &MF) override;
StringRef getPassName() const override {
return "InsertNOPLoad: Erratum Fix LBR35: insert a NOP instruction after "
"every single-cycle load instruction when the next instruction is "
"another load/store instruction";
}
};
class LLVM_LIBRARY_VISIBILITY DetectRoundChange
: public LEONMachineFunctionPass {
public:
static char ID;
DetectRoundChange();
bool runOnMachineFunction(MachineFunction &MF) override;
StringRef getPassName() const override {
return "DetectRoundChange: Leon erratum detection: detect any rounding "
"mode change request: use only the round-to-nearest rounding mode";
}
};
class LLVM_LIBRARY_VISIBILITY FixAllFDIVSQRT : public LEONMachineFunctionPass {
public:
static char ID;
FixAllFDIVSQRT();
bool runOnMachineFunction(MachineFunction &MF) override;
StringRef getPassName() const override {
return "FixAllFDIVSQRT: Erratum Fix LBR34: fix FDIVS/FDIVD/FSQRTS/FSQRTD "
"instructions with NOPs and floating-point store";
}
};
} // namespace llvm
#endif // LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
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