lib/Target/ARM/ARMInstrInfo.cpp

   1 //===- ARMInstrInfo.cpp - 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 #include "ARMInstrInfo.h"
  15 #include "ARM.h"
  16 #include "ARMAddressingModes.h"
  17 #include "ARMMachineFunctionInfo.h"
  18 #include "llvm/ADT/STLExtras.h"
  19 #include "llvm/CodeGen/LiveVariables.h"
  20 #include "llvm/CodeGen/MachineFrameInfo.h"
  21 #include "llvm/CodeGen/MachineInstrBuilder.h"
  22 #include "llvm/CodeGen/MachineJumpTableInfo.h"
  23 #include "llvm/MC/MCAsmInfo.h"
  24 using namespace llvm;
  25
  26 ARMInstrInfo::ARMInstrInfo(const ARMSubtarget &STI)
  27   : ARMBaseInstrInfo(STI), RI(*this, STI) {
  28 }
  29
  30 unsigned ARMInstrInfo::getUnindexedOpcode(unsigned Opc) const {
  31   switch (Opc) {
  32   default: break;
  33   case ARM::LDR_PRE:
  34   case ARM::LDR_POST:
  35     return ARM::LDRi12;
  36   case ARM::LDRH_PRE:
  37   case ARM::LDRH_POST:
  38     return ARM::LDRH;
  39   case ARM::LDRB_PRE:
  40   case ARM::LDRB_POST:
  41     return ARM::LDRBi12;
  42   case ARM::LDRSH_PRE:
  43   case ARM::LDRSH_POST:
  44     return ARM::LDRSH;
  45   case ARM::LDRSB_PRE:
  46   case ARM::LDRSB_POST:
  47     return ARM::LDRSB;
  48   case ARM::STR_PRE:
  49   case ARM::STR_POST:
  50     return ARM::STRi12;
  51   case ARM::STRH_PRE:
  52   case ARM::STRH_POST:
  53     return ARM::STRH;
  54   case ARM::STRB_PRE:
  55   case ARM::STRB_POST:
  56     return ARM::STRBi12;
  57   }
  58
  59   return 0;
  60 }