DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (c68fe15a81fc)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: set ts=8 sts=2 et sw=2 tw=80:
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef jit_mips_shared_LIR_mips_shared_h
#define jit_mips_shared_LIR_mips_shared_h

namespace js {
namespace jit {

// Convert a 32-bit unsigned integer to a double.
class LWasmUint32ToDouble : public LInstructionHelper<1, 1, 0> {
 public:
  LIR_HEADER(WasmUint32ToDouble)

  LWasmUint32ToDouble(const LAllocation& input)
      : LInstructionHelper(classOpcode) {
    setOperand(0, input);
  }
};

// Convert a 32-bit unsigned integer to a float32.
class LWasmUint32ToFloat32 : public LInstructionHelper<1, 1, 0> {
 public:
  LIR_HEADER(WasmUint32ToFloat32)

  LWasmUint32ToFloat32(const LAllocation& input)
      : LInstructionHelper(classOpcode) {
    setOperand(0, input);
  }
};

class LDivI : public LBinaryMath<1> {
 public:
  LIR_HEADER(DivI);

  LDivI(const LAllocation& lhs, const LAllocation& rhs, const LDefinition& temp)
      : LBinaryMath(classOpcode) {
    setOperand(0, lhs);
    setOperand(1, rhs);
    setTemp(0, temp);
  }

  MDiv* mir() const { return mir_->toDiv(); }
};

class LDivPowTwoI : public LInstructionHelper<1, 1, 1> {
  const int32_t shift_;

 public:
  LIR_HEADER(DivPowTwoI)

  LDivPowTwoI(const LAllocation& lhs, int32_t shift, const LDefinition& temp)
      : LInstructionHelper(classOpcode), shift_(shift) {
    setOperand(0, lhs);
    setTemp(0, temp);
  }

  const LAllocation* numerator() { return getOperand(0); }
  int32_t shift() const { return shift_; }
  MDiv* mir() const { return mir_->toDiv(); }
};

class LModI : public LBinaryMath<1> {
 public:
  LIR_HEADER(ModI);

  LModI(const LAllocation& lhs, const LAllocation& rhs,
        const LDefinition& callTemp)
      : LBinaryMath(classOpcode) {
    setOperand(0, lhs);
    setOperand(1, rhs);
    setTemp(0, callTemp);
  }

  const LDefinition* callTemp() { return getTemp(0); }
  MMod* mir() const { return mir_->toMod(); }
};

class LModPowTwoI : public LInstructionHelper<1, 1, 0> {
  const int32_t shift_;

 public:
  LIR_HEADER(ModPowTwoI);

  LModPowTwoI(const LAllocation& lhs, int32_t shift)
      : LInstructionHelper(classOpcode), shift_(shift) {
    setOperand(0, lhs);
  }

  int32_t shift() const { return shift_; }
  MMod* mir() const { return mir_->toMod(); }
};

class LModMaskI : public LInstructionHelper<1, 1, 2> {
  const int32_t shift_;

 public:
  LIR_HEADER(ModMaskI);

  LModMaskI(const LAllocation& lhs, const LDefinition& temp0,
            const LDefinition& temp1, int32_t shift)
      : LInstructionHelper(classOpcode), shift_(shift) {
    setOperand(0, lhs);
    setTemp(0, temp0);
    setTemp(1, temp1);
  }

  int32_t shift() const { return shift_; }
  MMod* mir() const { return mir_->toMod(); }
};

// Takes a tableswitch with an integer to decide
class LTableSwitch : public LInstructionHelper<0, 1, 2> {
 public:
  LIR_HEADER(TableSwitch);

  LTableSwitch(const LAllocation& in, const LDefinition& inputCopy,
               const LDefinition& jumpTablePointer, MTableSwitch* ins)
      : LInstructionHelper(classOpcode) {
    setOperand(0, in);
    setTemp(0, inputCopy);
    setTemp(1, jumpTablePointer);
    setMir(ins);
  }

  MTableSwitch* mir() const { return mir_->toTableSwitch(); }
  const LAllocation* index() { return getOperand(0); }
  const LDefinition* tempInt() { return getTemp(0); }
  // This is added to share the same CodeGenerator prefixes.
  const LDefinition* tempPointer() { return getTemp(1); }
};

// Takes a tableswitch with an integer to decide
class LTableSwitchV : public LInstructionHelper<0, BOX_PIECES, 3> {
 public:
  LIR_HEADER(TableSwitchV);

  LTableSwitchV(const LBoxAllocation& input, const LDefinition& inputCopy,
                const LDefinition& floatCopy,
                const LDefinition& jumpTablePointer, MTableSwitch* ins)
      : LInstructionHelper(classOpcode) {
    setBoxOperand(InputValue, input);
    setTemp(0, inputCopy);
    setTemp(1, floatCopy);
    setTemp(2, jumpTablePointer);
    setMir(ins);
  }

  MTableSwitch* mir() const { return mir_->toTableSwitch(); }

  static const size_t InputValue = 0;

  const LDefinition* tempInt() { return getTemp(0); }
  const LDefinition* tempFloat() { return getTemp(1); }
  const LDefinition* tempPointer() { return getTemp(2); }
};

class LMulI : public LBinaryMath<0> {
 public:
  LIR_HEADER(MulI);

  LMulI() : LBinaryMath(classOpcode) {}

  MMul* mir() { return mir_->toMul(); }
};

class LUDivOrMod : public LBinaryMath<0> {
 public:
  LIR_HEADER(UDivOrMod);

  LUDivOrMod() : LBinaryMath(classOpcode) {}

  MBinaryArithInstruction* mir() const {
    MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
    return static_cast<MBinaryArithInstruction*>(mir_);
  }

  bool canBeDivideByZero() const {
    if (mir_->isMod()) {
      return mir_->toMod()->canBeDivideByZero();
    }
    return mir_->toDiv()->canBeDivideByZero();
  }

  bool trapOnError() const {
    if (mir_->isMod()) {
      return mir_->toMod()->trapOnError();
    }
    return mir_->toDiv()->trapOnError();
  }

  wasm::BytecodeOffset bytecodeOffset() const {
    MOZ_ASSERT(mir_->isDiv() || mir_->isMod());
    if (mir_->isMod()) {
      return mir_->toMod()->bytecodeOffset();
    }
    return mir_->toDiv()->bytecodeOffset();
  }
};

namespace details {

// Base class for the int64 and non-int64 variants.
template <size_t NumDefs>
class LWasmUnalignedLoadBase : public details::LWasmLoadBase<NumDefs, 2> {
 public:
  typedef LWasmLoadBase<NumDefs, 2> Base;

  explicit LWasmUnalignedLoadBase(LNode::Opcode opcode, const LAllocation& ptr,
                                  const LDefinition& valueHelper)
      : Base(opcode, ptr, LAllocation()) {
    Base::setTemp(0, LDefinition::BogusTemp());
    Base::setTemp(1, valueHelper);
  }

  const LAllocation* ptr() { return Base::getOperand(0); }
  const LDefinition* ptrCopy() { return Base::getTemp(0); }
};

}  // namespace details

class LWasmUnalignedLoad : public details::LWasmUnalignedLoadBase<1> {
 public:
  LIR_HEADER(WasmUnalignedLoad);

  explicit LWasmUnalignedLoad(const LAllocation& ptr,
                              const LDefinition& valueHelper)
      : LWasmUnalignedLoadBase(classOpcode, ptr, valueHelper) {}
};

class LWasmUnalignedLoadI64
    : public details::LWasmUnalignedLoadBase<INT64_PIECES> {
 public:
  LIR_HEADER(WasmUnalignedLoadI64);

  explicit LWasmUnalignedLoadI64(const LAllocation& ptr,
                                 const LDefinition& valueHelper)
      : LWasmUnalignedLoadBase(classOpcode, ptr, valueHelper) {}
};

namespace details {

// Base class for the int64 and non-int64 variants.
template <size_t NumOps>
class LWasmUnalignedStoreBase : public LInstructionHelper<0, NumOps, 2> {
 public:
  typedef LInstructionHelper<0, NumOps, 2> Base;

  static const size_t PtrIndex = 0;
  static const size_t ValueIndex = 1;

  LWasmUnalignedStoreBase(LNode::Opcode opcode, const LAllocation& ptr,
                          const LDefinition& valueHelper)
      : Base(opcode) {
    Base::setOperand(0, ptr);
    Base::setTemp(0, LDefinition::BogusTemp());
    Base::setTemp(1, valueHelper);
  }

  MWasmStore* mir() const { return Base::mir_->toWasmStore(); }
  const LAllocation* ptr() { return Base::getOperand(PtrIndex); }
  const LDefinition* ptrCopy() { return Base::getTemp(0); }
};

}  // namespace details

class LWasmUnalignedStore : public details::LWasmUnalignedStoreBase<2> {
 public:
  LIR_HEADER(WasmUnalignedStore);

  LWasmUnalignedStore(const LAllocation& ptr, const LAllocation& value,
                      const LDefinition& valueHelper)
      : LWasmUnalignedStoreBase(classOpcode, ptr, valueHelper) {
    setOperand(1, value);
  }

  const LAllocation* value() { return Base::getOperand(ValueIndex); }
};

class LWasmUnalignedStoreI64
    : public details::LWasmUnalignedStoreBase<1 + INT64_PIECES> {
 public:
  LIR_HEADER(WasmUnalignedStoreI64);
  LWasmUnalignedStoreI64(const LAllocation& ptr, const LInt64Allocation& value,
                         const LDefinition& valueHelper)
      : LWasmUnalignedStoreBase(classOpcode, ptr, valueHelper) {
    setInt64Operand(1, value);
  }

  const LInt64Allocation value() { return getInt64Operand(ValueIndex); }
};

class LWasmCompareExchangeI64
    : public LInstructionHelper<INT64_PIECES, 1 + INT64_PIECES + INT64_PIECES,
                                0> {
 public:
  LIR_HEADER(WasmCompareExchangeI64);

  LWasmCompareExchangeI64(const LAllocation& ptr,
                          const LInt64Allocation& oldValue,
                          const LInt64Allocation& newValue)
      : LInstructionHelper(classOpcode) {
    setOperand(0, ptr);
    setInt64Operand(1, oldValue);
    setInt64Operand(1 + INT64_PIECES, newValue);
  }

  const LAllocation* ptr() { return getOperand(0); }
  const LInt64Allocation oldValue() { return getInt64Operand(1); }
  const LInt64Allocation newValue() {
    return getInt64Operand(1 + INT64_PIECES);
  }
  const MWasmCompareExchangeHeap* mir() const {
    return mir_->toWasmCompareExchangeHeap();
  }
};

class LWasmAtomicExchangeI64
    : public LInstructionHelper<INT64_PIECES, 1 + INT64_PIECES, 0> {
 public:
  LIR_HEADER(WasmAtomicExchangeI64);

  LWasmAtomicExchangeI64(const LAllocation& ptr, const LInt64Allocation& value)
      : LInstructionHelper(classOpcode) {
    setOperand(0, ptr);
    setInt64Operand(1, value);
  }

  const LAllocation* ptr() { return getOperand(0); }
  const LInt64Allocation value() { return getInt64Operand(1); }
  const MWasmAtomicExchangeHeap* mir() const {
    return mir_->toWasmAtomicExchangeHeap();
  }
};

class LWasmAtomicBinopI64
    : public LInstructionHelper<INT64_PIECES, 1 + INT64_PIECES, 2> {
 public:
  LIR_HEADER(WasmAtomicBinopI64);

  LWasmAtomicBinopI64(const LAllocation& ptr, const LInt64Allocation& value)
      : LInstructionHelper(classOpcode) {
    setOperand(0, ptr);
    setInt64Operand(1, value);
  }

  const LAllocation* ptr() { return getOperand(0); }
  const LInt64Allocation value() { return getInt64Operand(1); }
  const MWasmAtomicBinopHeap* mir() const {
    return mir_->toWasmAtomicBinopHeap();
  }
};

}  // namespace jit
}  // namespace js

#endif /* jit_mips_shared_LIR_mips_shared_h */