llvm/lib/Target/Hexagon/HexagonAsmPrinter.h

   1 //===- HexagonAsmPrinter.h - Print machine code -----------------*- C++ -*-===//
   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 // Hexagon Assembly printer class.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H
  14 #define LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H
  15
  16 #include "HexagonSubtarget.h"
  17 #include "llvm/CodeGen/AsmPrinter.h"
  18 #include "llvm/CodeGen/MachineFunction.h"
  19 #include "llvm/MC/MCStreamer.h"
  20 #include <utility>
  21
  22 namespace llvm {
  23
  24 class MachineInstr;
  25 class MCInst;
  26 class raw_ostream;
  27 class TargetMachine;
  28
  29   class HexagonAsmPrinter : public AsmPrinter {
  30     const HexagonSubtarget *Subtarget = nullptr;
  31
  32     void emitAttributes();
  33
  34   public:
  35     explicit HexagonAsmPrinter(TargetMachine &TM,
  36                                std::unique_ptr<MCStreamer> Streamer)
  37       : AsmPrinter(TM, std::move(Streamer)) {}
  38
  39     bool runOnMachineFunction(MachineFunction &Fn) override {
  40       Subtarget = &Fn.getSubtarget<HexagonSubtarget>();
  41       const bool Modified = AsmPrinter::runOnMachineFunction(Fn);
  42       // Emit the XRay table for this function.
  43       emitXRayTable();
  44
  45       return Modified;
  46     }
  47
  48     StringRef getPassName() const override {
  49       return "Hexagon Assembly Printer";
  50     }
  51
  52     bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB)
  53           const override;
  54
  55     void emitInstruction(const MachineInstr *MI) override;
  56
  57     //===------------------------------------------------------------------===//
  58     // XRay implementation
  59     //===------------------------------------------------------------------===//
  60     // XRay-specific lowering for Hexagon.
  61     void LowerPATCHABLE_FUNCTION_ENTER(const MachineInstr &MI);
  62     void LowerPATCHABLE_FUNCTION_EXIT(const MachineInstr &MI);
  63     void LowerPATCHABLE_TAIL_CALL(const MachineInstr &MI);
  64     void EmitSled(const MachineInstr &MI, SledKind Kind);
  65
  66     void HexagonProcessInstruction(MCInst &Inst, const MachineInstr &MBB);
  67
  68     void printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O);
  69     bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
  70                          const char *ExtraCode, raw_ostream &OS) override;
  71     bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
  72                                const char *ExtraCode, raw_ostream &OS) override;
  73     void emitStartOfAsmFile(Module &M) override;
  74     void emitEndOfAsmFile(Module &M) override;
  75   };
  76
  77 } // end namespace llvm
  78
  79 #endif // LLVM_LIB_TARGET_HEXAGON_HEXAGONASMPRINTER_H