contrib/llvm/lib/Target/ARM/ARMConstantPoolValue.cpp

   1 //===-- ARMConstantPoolValue.cpp - ARM constantpool value -----------------===//
   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 implements the ARM specific constantpool value class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "ARMConstantPoolValue.h"
  15 #include "llvm/ADT/FoldingSet.h"
  16 #include "llvm/CodeGen/MachineBasicBlock.h"
  17 #include "llvm/IR/Constant.h"
  18 #include "llvm/IR/Constants.h"
  19 #include "llvm/IR/GlobalValue.h"
  20 #include "llvm/IR/Type.h"
  21 #include "llvm/Support/raw_ostream.h"
  22 #include <cstdlib>
  23 using namespace llvm;
  24
  25 //===----------------------------------------------------------------------===//
  26 // ARMConstantPoolValue
  27 //===----------------------------------------------------------------------===//
  28
  29 ARMConstantPoolValue::ARMConstantPoolValue(Type *Ty, unsigned id,
  30                                            ARMCP::ARMCPKind kind,
  31                                            unsigned char PCAdj,
  32                                            ARMCP::ARMCPModifier modifier,
  33                                            bool addCurrentAddress)
  34   : MachineConstantPoolValue(Ty), LabelId(id), Kind(kind),
  35     PCAdjust(PCAdj), Modifier(modifier),
  36     AddCurrentAddress(addCurrentAddress) {}
  37
  38 ARMConstantPoolValue::ARMConstantPoolValue(LLVMContext &C, unsigned id,
  39                                            ARMCP::ARMCPKind kind,
  40                                            unsigned char PCAdj,
  41                                            ARMCP::ARMCPModifier modifier,
  42                                            bool addCurrentAddress)
  43   : MachineConstantPoolValue((Type*)Type::getInt32Ty(C)),
  44     LabelId(id), Kind(kind), PCAdjust(PCAdj), Modifier(modifier),
  45     AddCurrentAddress(addCurrentAddress) {}
  46
  47 ARMConstantPoolValue::~ARMConstantPoolValue() {}
  48
  49 const char *ARMConstantPoolValue::getModifierText() const {
  50   switch (Modifier) {
  51     // FIXME: Are these case sensitive? It'd be nice to lower-case all the
  52     // strings if that's legal.
  53   case ARMCP::no_modifier:
  54     return "none";
  55   case ARMCP::TLSGD:
  56     return "tlsgd";
  57   case ARMCP::GOT_PREL:
  58     return "GOT_PREL";
  59   case ARMCP::GOTTPOFF:
  60     return "gottpoff";
  61   case ARMCP::TPOFF:
  62     return "tpoff";
  63   case ARMCP::SECREL:
  64     return "secrel32";
  65   }
  66   llvm_unreachable("Unknown modifier!");
  67 }
  68
  69 int ARMConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
  70                                                     unsigned Alignment) {
  71   llvm_unreachable("Shouldn't be calling this directly!");
  72 }
  73
  74 void
  75 ARMConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
  76   ID.AddInteger(LabelId);
  77   ID.AddInteger(PCAdjust);
  78 }
  79
  80 bool
  81 ARMConstantPoolValue::hasSameValue(ARMConstantPoolValue *ACPV) {
  82   if (ACPV->Kind == Kind &&
  83       ACPV->PCAdjust == PCAdjust &&
  84       ACPV->Modifier == Modifier &&
  85       ACPV->LabelId == LabelId &&
  86       ACPV->AddCurrentAddress == AddCurrentAddress) {
  87     // Two PC relative constpool entries containing the same GV address or
  88     // external symbols. FIXME: What about blockaddress?
  89     if (Kind == ARMCP::CPValue || Kind == ARMCP::CPExtSymbol)
  90       return true;
  91   }
  92   return false;
  93 }
  94
  95 LLVM_DUMP_METHOD void ARMConstantPoolValue::dump() const {
  96   errs() << "  " << *this;
  97 }
  98
  99 void ARMConstantPoolValue::print(raw_ostream &O) const {
 100   if (Modifier) O << "(" << getModifierText() << ")";
 101   if (PCAdjust != 0) {
 102     O << "-(LPC" << LabelId << "+" << (unsigned)PCAdjust;
 103     if (AddCurrentAddress) O << "-.";
 104     O << ")";
 105   }
 106 }
 107
 108 //===----------------------------------------------------------------------===//
 109 // ARMConstantPoolConstant
 110 //===----------------------------------------------------------------------===//
 111
 112 ARMConstantPoolConstant::ARMConstantPoolConstant(Type *Ty,
 113                                                  const Constant *C,
 114                                                  unsigned ID,
 115                                                  ARMCP::ARMCPKind Kind,
 116                                                  unsigned char PCAdj,
 117                                                  ARMCP::ARMCPModifier Modifier,
 118                                                  bool AddCurrentAddress)
 119   : ARMConstantPoolValue(Ty, ID, Kind, PCAdj, Modifier, AddCurrentAddress),
 120     CVal(C) {}
 121
 122 ARMConstantPoolConstant::ARMConstantPoolConstant(const Constant *C,
 123                                                  unsigned ID,
 124                                                  ARMCP::ARMCPKind Kind,
 125                                                  unsigned char PCAdj,
 126                                                  ARMCP::ARMCPModifier Modifier,
 127                                                  bool AddCurrentAddress)
 128   : ARMConstantPoolValue((Type*)C->getType(), ID, Kind, PCAdj, Modifier,
 129                          AddCurrentAddress),
 130     CVal(C) {}
 131
 132 ARMConstantPoolConstant *
 133 ARMConstantPoolConstant::Create(const Constant *C, unsigned ID) {
 134   return new ARMConstantPoolConstant(C, ID, ARMCP::CPValue, 0,
 135                                      ARMCP::no_modifier, false);
 136 }
 137
 138 ARMConstantPoolConstant *
 139 ARMConstantPoolConstant::Create(const GlobalValue *GV,
 140                                 ARMCP::ARMCPModifier Modifier) {
 141   return new ARMConstantPoolConstant((Type*)Type::getInt32Ty(GV->getContext()),
 142                                      GV, 0, ARMCP::CPValue, 0,
 143                                      Modifier, false);
 144 }
 145
 146 ARMConstantPoolConstant *
 147 ARMConstantPoolConstant::Create(const Constant *C, unsigned ID,
 148                                 ARMCP::ARMCPKind Kind, unsigned char PCAdj) {
 149   return new ARMConstantPoolConstant(C, ID, Kind, PCAdj,
 150                                      ARMCP::no_modifier, false);
 151 }
 152
 153 ARMConstantPoolConstant *
 154 ARMConstantPoolConstant::Create(const Constant *C, unsigned ID,
 155                                 ARMCP::ARMCPKind Kind, unsigned char PCAdj,
 156                                 ARMCP::ARMCPModifier Modifier,
 157                                 bool AddCurrentAddress) {
 158   return new ARMConstantPoolConstant(C, ID, Kind, PCAdj, Modifier,
 159                                      AddCurrentAddress);
 160 }
 161
 162 const GlobalValue *ARMConstantPoolConstant::getGV() const {
 163   return dyn_cast_or_null<GlobalValue>(CVal);
 164 }
 165
 166 const BlockAddress *ARMConstantPoolConstant::getBlockAddress() const {
 167   return dyn_cast_or_null<BlockAddress>(CVal);
 168 }
 169
 170 int ARMConstantPoolConstant::getExistingMachineCPValue(MachineConstantPool *CP,
 171                                                        unsigned Alignment) {
 172   return getExistingMachineCPValueImpl<ARMConstantPoolConstant>(CP, Alignment);
 173 }
 174
 175 bool ARMConstantPoolConstant::hasSameValue(ARMConstantPoolValue *ACPV) {
 176   const ARMConstantPoolConstant *ACPC = dyn_cast<ARMConstantPoolConstant>(ACPV);
 177   return ACPC && ACPC->CVal == CVal && ARMConstantPoolValue::hasSameValue(ACPV);
 178 }
 179
 180 void ARMConstantPoolConstant::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
 181   ID.AddPointer(CVal);
 182   ARMConstantPoolValue::addSelectionDAGCSEId(ID);
 183 }
 184
 185 void ARMConstantPoolConstant::print(raw_ostream &O) const {
 186   O << CVal->getName();
 187   ARMConstantPoolValue::print(O);
 188 }
 189
 190 //===----------------------------------------------------------------------===//
 191 // ARMConstantPoolSymbol
 192 //===----------------------------------------------------------------------===//
 193
 194 ARMConstantPoolSymbol::ARMConstantPoolSymbol(LLVMContext &C, const char *s,
 195                                              unsigned id,
 196                                              unsigned char PCAdj,
 197                                              ARMCP::ARMCPModifier Modifier,
 198                                              bool AddCurrentAddress)
 199   : ARMConstantPoolValue(C, id, ARMCP::CPExtSymbol, PCAdj, Modifier,
 200                          AddCurrentAddress),
 201     S(s) {}
 202
 203 ARMConstantPoolSymbol *
 204 ARMConstantPoolSymbol::Create(LLVMContext &C, const char *s,
 205                               unsigned ID, unsigned char PCAdj) {
 206   return new ARMConstantPoolSymbol(C, s, ID, PCAdj, ARMCP::no_modifier, false);
 207 }
 208
 209 int ARMConstantPoolSymbol::getExistingMachineCPValue(MachineConstantPool *CP,
 210                                                      unsigned Alignment) {
 211   return getExistingMachineCPValueImpl<ARMConstantPoolSymbol>(CP, Alignment);
 212 }
 213
 214 bool ARMConstantPoolSymbol::hasSameValue(ARMConstantPoolValue *ACPV) {
 215   const ARMConstantPoolSymbol *ACPS = dyn_cast<ARMConstantPoolSymbol>(ACPV);
 216   return ACPS && ACPS->S == S && ARMConstantPoolValue::hasSameValue(ACPV);
 217 }
 218
 219 void ARMConstantPoolSymbol::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
 220   ID.AddString(S);
 221   ARMConstantPoolValue::addSelectionDAGCSEId(ID);
 222 }
 223
 224 void ARMConstantPoolSymbol::print(raw_ostream &O) const {
 225   O << S;
 226   ARMConstantPoolValue::print(O);
 227 }
 228
 229 //===----------------------------------------------------------------------===//
 230 // ARMConstantPoolMBB
 231 //===----------------------------------------------------------------------===//
 232
 233 ARMConstantPoolMBB::ARMConstantPoolMBB(LLVMContext &C,
 234                                        const MachineBasicBlock *mbb,
 235                                        unsigned id, unsigned char PCAdj,
 236                                        ARMCP::ARMCPModifier Modifier,
 237                                        bool AddCurrentAddress)
 238   : ARMConstantPoolValue(C, id, ARMCP::CPMachineBasicBlock, PCAdj,
 239                          Modifier, AddCurrentAddress),
 240     MBB(mbb) {}
 241
 242 ARMConstantPoolMBB *ARMConstantPoolMBB::Create(LLVMContext &C,
 243                                                const MachineBasicBlock *mbb,
 244                                                unsigned ID,
 245                                                unsigned char PCAdj) {
 246   return new ARMConstantPoolMBB(C, mbb, ID, PCAdj, ARMCP::no_modifier, false);
 247 }
 248
 249 int ARMConstantPoolMBB::getExistingMachineCPValue(MachineConstantPool *CP,
 250                                                   unsigned Alignment) {
 251   return getExistingMachineCPValueImpl<ARMConstantPoolMBB>(CP, Alignment);
 252 }
 253
 254 bool ARMConstantPoolMBB::hasSameValue(ARMConstantPoolValue *ACPV) {
 255   const ARMConstantPoolMBB *ACPMBB = dyn_cast<ARMConstantPoolMBB>(ACPV);
 256   return ACPMBB && ACPMBB->MBB == MBB &&
 257     ARMConstantPoolValue::hasSameValue(ACPV);
 258 }
 259
 260 void ARMConstantPoolMBB::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
 261   ID.AddPointer(MBB);
 262   ARMConstantPoolValue::addSelectionDAGCSEId(ID);
 263 }
 264
 265 void ARMConstantPoolMBB::print(raw_ostream &O) const {
 266   O << "BB#" << MBB->getNumber();
 267   ARMConstantPoolValue::print(O);
 268 }