yonghong-song 06c531e808
BPF: Generate locked insn for __sync_fetch_and_add() with cpu v1/v2 (#106494)
This patch contains two pars:
- first to revert the patch https://github.com/llvm/llvm-project/pull/101428.
- second to remove `atomic_fetch_and_*()` to `atomic_<op>()`
  conversion (when return value is not used), but preserve 
  `__sync_fetch_and_add()` to locked insn with cpu v1/v2.
2024-08-30 14:00:33 -07:00

102 lines
3.1 KiB
C++

//===-- BPF.h - Top-level interface for BPF representation ------*- C++ -*-===//
//
// 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_BPF_BPF_H
#define LLVM_LIB_TARGET_BPF_BPF_H
#include "MCTargetDesc/BPFMCTargetDesc.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Pass.h"
#include "llvm/Target/TargetMachine.h"
namespace llvm {
class BPFRegisterBankInfo;
class BPFSubtarget;
class BPFTargetMachine;
class InstructionSelector;
class PassRegistry;
ModulePass *createBPFCheckAndAdjustIR();
FunctionPass *createBPFISelDag(BPFTargetMachine &TM);
FunctionPass *createBPFMISimplifyPatchablePass();
FunctionPass *createBPFMIPeepholePass();
FunctionPass *createBPFMIPreEmitPeepholePass();
FunctionPass *createBPFMIPreEmitCheckingPass();
InstructionSelector *createBPFInstructionSelector(const BPFTargetMachine &,
const BPFSubtarget &,
const BPFRegisterBankInfo &);
void initializeBPFCheckAndAdjustIRPass(PassRegistry&);
void initializeBPFDAGToDAGISelLegacyPass(PassRegistry &);
void initializeBPFMIPeepholePass(PassRegistry &);
void initializeBPFMIPreEmitCheckingPass(PassRegistry &);
void initializeBPFMIPreEmitPeepholePass(PassRegistry &);
void initializeBPFMISimplifyPatchablePass(PassRegistry &);
class BPFAbstractMemberAccessPass
: public PassInfoMixin<BPFAbstractMemberAccessPass> {
BPFTargetMachine *TM;
public:
BPFAbstractMemberAccessPass(BPFTargetMachine *TM) : TM(TM) {}
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
static bool isRequired() { return true; }
};
class BPFPreserveDITypePass : public PassInfoMixin<BPFPreserveDITypePass> {
public:
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
static bool isRequired() { return true; }
};
class BPFIRPeepholePass : public PassInfoMixin<BPFIRPeepholePass> {
public:
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
static bool isRequired() { return true; }
};
class BPFASpaceCastSimplifyPass
: public PassInfoMixin<BPFASpaceCastSimplifyPass> {
public:
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
static bool isRequired() { return true; }
};
class BPFAdjustOptPass : public PassInfoMixin<BPFAdjustOptPass> {
public:
PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
};
class BPFPreserveStaticOffsetPass
: public PassInfoMixin<BPFPreserveStaticOffsetPass> {
bool AllowPartial;
public:
BPFPreserveStaticOffsetPass(bool AllowPartial) : AllowPartial(AllowPartial) {}
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
static bool isRequired() { return true; }
static std::pair<GetElementPtrInst *, LoadInst *>
reconstructLoad(CallInst *Call);
static std::pair<GetElementPtrInst *, StoreInst *>
reconstructStore(CallInst *Call);
};
} // namespace llvm
#endif