Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/lib/Target/BPF/BPFAsmPrinter.cpp

@@ -1,139 +0,0 @@
-//===-- BPFAsmPrinter.cpp - BPF LLVM assembly writer ----------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains a printer that converts from our internal representation
-// of machine-dependent LLVM code to the BPF assembly language.
-//
-//===----------------------------------------------------------------------===//
-
-#include "BPF.h"
-#include "BPFInstrInfo.h"
-#include "BPFMCInstLower.h"
-#include "BPFTargetMachine.h"
-#include "InstPrinter/BPFInstPrinter.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineConstantPool.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCInst.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/MC/MCSymbol.h"
-#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-
-#define DEBUG_TYPE "asm-printer"
-
-namespace {
-class BPFAsmPrinter : public AsmPrinter {
-public:
-  explicit BPFAsmPrinter(TargetMachine &TM,
-                         std::unique_ptr<MCStreamer> Streamer)
-      : AsmPrinter(TM, std::move(Streamer)) {}
-
-  StringRef getPassName() const override { return "BPF Assembly Printer"; }
-  void printOperand(const MachineInstr *MI, int OpNum, raw_ostream &O);
-  bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
-                       unsigned AsmVariant, const char *ExtraCode,
-                       raw_ostream &O) override;
-  bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
-                             unsigned AsmVariant, const char *ExtraCode,
-                             raw_ostream &O) override;
-
-  void EmitInstruction(const MachineInstr *MI) override;
-};
-} // namespace
-
-void BPFAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
-                                 raw_ostream &O) {
-  const MachineOperand &MO = MI->getOperand(OpNum);
-
-  switch (MO.getType()) {
-  case MachineOperand::MO_Register:
-    O << BPFInstPrinter::getRegisterName(MO.getReg());
-    break;
-
-  case MachineOperand::MO_Immediate:
-    O << MO.getImm();
-    break;
-
-  case MachineOperand::MO_MachineBasicBlock:
-    O << *MO.getMBB()->getSymbol();
-    break;
-
-  case MachineOperand::MO_GlobalAddress:
-    O << *getSymbol(MO.getGlobal());
-    break;
-
-  case MachineOperand::MO_BlockAddress: {
-    MCSymbol *BA = GetBlockAddressSymbol(MO.getBlockAddress());
-    O << BA->getName();
-    break;
-  }
-
-  case MachineOperand::MO_ExternalSymbol:
-    O << *GetExternalSymbolSymbol(MO.getSymbolName());
-    break;
-
-  case MachineOperand::MO_JumpTableIndex:
-  case MachineOperand::MO_ConstantPoolIndex:
-  default:
-    llvm_unreachable("<unknown operand type>");
-  }
-}
-
-bool BPFAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
-                                    unsigned /*AsmVariant*/,
-                                    const char *ExtraCode, raw_ostream &O) {
-  if (ExtraCode && ExtraCode[0])
-    return true; // BPF does not have special modifiers
-
-  printOperand(MI, OpNo, O);
-  return false;
-}
-
-bool BPFAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
-                                          unsigned OpNum, unsigned AsmVariant,
-                                          const char *ExtraCode,
-                                          raw_ostream &O) {
-  assert(OpNum + 1 < MI->getNumOperands() && "Insufficient operands");
-  const MachineOperand &BaseMO = MI->getOperand(OpNum);
-  const MachineOperand &OffsetMO = MI->getOperand(OpNum + 1);
-  assert(BaseMO.isReg() && "Unexpected base pointer for inline asm memory operand.");
-  assert(OffsetMO.isImm() && "Unexpected offset for inline asm memory operand.");
-  int Offset = OffsetMO.getImm();
-
-  if (ExtraCode)
-    return true; // Unknown modifier.
-
-  if (Offset < 0)
-    O << "(" << BPFInstPrinter::getRegisterName(BaseMO.getReg()) << " - " << -Offset << ")";
-  else
-    O << "(" << BPFInstPrinter::getRegisterName(BaseMO.getReg()) << " + " << Offset << ")";
-
-  return false;
-}
-
-void BPFAsmPrinter::EmitInstruction(const MachineInstr *MI) {
-
-  BPFMCInstLower MCInstLowering(OutContext, *this);
-
-  MCInst TmpInst;
-  MCInstLowering.Lower(MI, TmpInst);
-  EmitToStreamer(*OutStreamer, TmpInst);
-}
-
-// Force static initialization.
-extern "C" void LLVMInitializeBPFAsmPrinter() {
-  RegisterAsmPrinter<BPFAsmPrinter> X(getTheBPFleTarget());
-  RegisterAsmPrinter<BPFAsmPrinter> Y(getTheBPFbeTarget());
-  RegisterAsmPrinter<BPFAsmPrinter> Z(getTheBPFTarget());
-}