LLVM  6.0.0svn
ARMInstrInfo.h
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1 //===-- ARMInstrInfo.h - ARM Instruction Information ------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file contains the ARM implementation of the TargetInstrInfo class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_ARM_ARMINSTRINFO_H
15 #define LLVM_LIB_TARGET_ARM_ARMINSTRINFO_H
16 
17 #include "ARMBaseInstrInfo.h"
18 #include "ARMRegisterInfo.h"
19 
20 namespace llvm {
21  class ARMSubtarget;
22 
24  ARMRegisterInfo RI;
25 public:
26  explicit ARMInstrInfo(const ARMSubtarget &STI);
27 
28  /// Return the noop instruction to use for a noop.
29  void getNoop(MCInst &NopInst) const override;
30 
31  // Return the non-pre/post incrementing version of 'Opc'. Return 0
32  // if there is not such an opcode.
33  unsigned getUnindexedOpcode(unsigned Opc) const override;
34 
35  /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
36  /// such, whenever a client has an instance of instruction info, it should
37  /// always be able to get register info as well (through this method).
38  ///
39  const ARMRegisterInfo &getRegisterInfo() const override { return RI; }
40 
41 private:
42  void expandLoadStackGuard(MachineBasicBlock::iterator MI) const override;
43 };
44 
45 }
46 
47 #endif
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
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:159
const ARMRegisterInfo & getRegisterInfo() const override
getRegisterInfo - TargetInstrInfo is a superset of MRegister info.
Definition: ARMInstrInfo.h:39
unsigned getUnindexedOpcode(unsigned Opc) const override
IRTranslator LLVM IR MI