LLVM  9.0.0svn
ARMInstrInfo.h
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1 //===-- ARMInstrInfo.h - ARM Instruction Information ------------*- 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 // This file contains the ARM implementation of the TargetInstrInfo class.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_ARM_ARMINSTRINFO_H
14 #define LLVM_LIB_TARGET_ARM_ARMINSTRINFO_H
15 
16 #include "ARMBaseInstrInfo.h"
17 #include "ARMRegisterInfo.h"
18 
19 namespace llvm {
20  class ARMSubtarget;
21 
23  ARMRegisterInfo RI;
24 public:
25  explicit ARMInstrInfo(const ARMSubtarget &STI);
26 
27  /// Return the noop instruction to use for a noop.
28  void getNoop(MCInst &NopInst) const override;
29 
30  // Return the non-pre/post incrementing version of 'Opc'. Return 0
31  // if there is not such an opcode.
32  unsigned getUnindexedOpcode(unsigned Opc) const override;
33 
34  /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
35  /// such, whenever a client has an instance of instruction info, it should
36  /// always be able to get register info as well (through this method).
37  ///
38  const ARMRegisterInfo &getRegisterInfo() const override { return RI; }
39 
40 private:
41  void expandLoadStackGuard(MachineBasicBlock::iterator MI) const override;
42 };
43 
44 }
45 
46 #endif
This class represents lattice values for constants.
Definition: AllocatorList.h:23
void getNoop(MCInst &NopInst) const override
Return the noop instruction to use for a noop.
ARMInstrInfo(const ARMSubtarget &STI)
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:158
const ARMRegisterInfo & getRegisterInfo() const override
getRegisterInfo - TargetInstrInfo is a superset of MRegister info.
Definition: ARMInstrInfo.h:38
unsigned getUnindexedOpcode(unsigned Opc) const override
IRTranslator LLVM IR MI