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| 1 //===- subzero/src/IceInstX8632.h - Low-level x86 instructions --*- C++ -*-===// |
| 2 // |
| 3 // The Subzero Code Generator |
| 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 declares the InstX8632 and OperandX8632 classes and |
| 11 // their subclasses. This represents the machine instructions and |
| 12 // operands used for x86-32 code selection. |
| 13 // |
| 14 //===----------------------------------------------------------------------===// |
| 15 |
| 16 #ifndef SUBZERO_SRC_ICEINSTX8632_H |
| 17 #define SUBZERO_SRC_ICEINSTX8632_H |
| 18 |
| 19 #include "IceDefs.h" |
| 20 #include "IceInst.h" |
| 21 #include "IceInstX8632.def" |
| 22 #include "IceOperand.h" |
| 23 |
| 24 namespace Ice { |
| 25 |
| 26 class TargetX8632; |
| 27 |
| 28 // OperandX8632 extends the Operand hierarchy. Its subclasses are |
| 29 // OperandX8632Mem and VariableSplit. |
| 30 class OperandX8632 : public Operand { |
| 31 public: |
| 32 enum OperandKindX8632 { |
| 33 k__Start = Operand::kTarget, |
| 34 kMem, |
| 35 kSplit |
| 36 }; |
| 37 virtual void emit(const Cfg *Func) const = 0; |
| 38 void dump(const Cfg *Func) const; |
| 39 |
| 40 protected: |
| 41 OperandX8632(OperandKindX8632 Kind, Type Ty) |
| 42 : Operand(static_cast<OperandKind>(Kind), Ty) {} |
| 43 virtual ~OperandX8632() {} |
| 44 |
| 45 private: |
| 46 OperandX8632(const OperandX8632 &) LLVM_DELETED_FUNCTION; |
| 47 OperandX8632 &operator=(const OperandX8632 &) LLVM_DELETED_FUNCTION; |
| 48 }; |
| 49 |
| 50 // OperandX8632Mem represents the m32 addressing mode, with optional |
| 51 // base and index registers, a constant offset, and a fixed shift |
| 52 // value for the index register. |
| 53 class OperandX8632Mem : public OperandX8632 { |
| 54 public: |
| 55 static OperandX8632Mem *create(Cfg *Func, Type Ty, Variable *Base, |
| 56 Constant *Offset, Variable *Index = NULL, |
| 57 uint32_t Shift = 0) { |
| 58 return new (Func->allocate<OperandX8632Mem>()) |
| 59 OperandX8632Mem(Func, Ty, Base, Offset, Index, Shift); |
| 60 } |
| 61 Variable *getBase() const { return Base; } |
| 62 Constant *getOffset() const { return Offset; } |
| 63 Variable *getIndex() const { return Index; } |
| 64 uint32_t getShift() const { return Shift; } |
| 65 virtual void emit(const Cfg *Func) const; |
| 66 virtual void dump(const Cfg *Func) const; |
| 67 |
| 68 static bool classof(const Operand *Operand) { |
| 69 return Operand->getKind() == static_cast<OperandKind>(kMem); |
| 70 } |
| 71 |
| 72 private: |
| 73 OperandX8632Mem(Cfg *Func, Type Ty, Variable *Base, Constant *Offset, |
| 74 Variable *Index, uint32_t Shift); |
| 75 OperandX8632Mem(const OperandX8632Mem &) LLVM_DELETED_FUNCTION; |
| 76 OperandX8632Mem &operator=(const OperandX8632Mem &) LLVM_DELETED_FUNCTION; |
| 77 virtual ~OperandX8632Mem() {} |
| 78 Variable *Base; |
| 79 Constant *Offset; |
| 80 Variable *Index; |
| 81 uint32_t Shift; |
| 82 }; |
| 83 |
| 84 // VariableSplit is a way to treat an f64 memory location as a pair |
| 85 // of i32 locations (Low and High). This is needed for some cases |
| 86 // of the Bitcast instruction. Since it's not possible for integer |
| 87 // registers to access the XMM registers and vice versa, the |
| 88 // lowering forces the f64 to be spilled to the stack and then |
| 89 // accesses through the VariableSplit. |
| 90 class VariableSplit : public OperandX8632 { |
| 91 public: |
| 92 enum Portion { |
| 93 Low, |
| 94 High |
| 95 }; |
| 96 static VariableSplit *create(Cfg *Func, Variable *Var, Portion Part) { |
| 97 return new (Func->allocate<VariableSplit>()) VariableSplit(Func, Var, Part); |
| 98 } |
| 99 virtual void emit(const Cfg *Func) const; |
| 100 virtual void dump(const Cfg *Func) const; |
| 101 |
| 102 static bool classof(const Operand *Operand) { |
| 103 return Operand->getKind() == static_cast<OperandKind>(kSplit); |
| 104 } |
| 105 |
| 106 private: |
| 107 VariableSplit(Cfg *Func, Variable *Var, Portion Part) |
| 108 : OperandX8632(kSplit, IceType_i32), Func(Func), Var(Var), Part(Part) { |
| 109 assert(Var->getType() == IceType_f64); |
| 110 Vars = Func->allocateArrayOf<Variable *>(1); |
| 111 Vars[0] = Var; |
| 112 NumVars = 1; |
| 113 } |
| 114 VariableSplit(const VariableSplit &) LLVM_DELETED_FUNCTION; |
| 115 VariableSplit &operator=(const VariableSplit &) LLVM_DELETED_FUNCTION; |
| 116 virtual ~VariableSplit() { Func->deallocateArrayOf<Variable *>(Vars); } |
| 117 Cfg *Func; // Held only for the destructor. |
| 118 Variable *Var; |
| 119 Portion Part; |
| 120 }; |
| 121 |
| 122 class InstX8632 : public InstTarget { |
| 123 public: |
| 124 enum InstKindX8632 { |
| 125 k__Start = Inst::Target, |
| 126 Adc, |
| 127 Add, |
| 128 Addss, |
| 129 And, |
| 130 Br, |
| 131 Call, |
| 132 Cdq, |
| 133 Cvt, |
| 134 Div, |
| 135 Divss, |
| 136 Fld, |
| 137 Fstp, |
| 138 Icmp, |
| 139 Idiv, |
| 140 Imul, |
| 141 Label, |
| 142 Load, |
| 143 Mov, |
| 144 Movsx, |
| 145 Movzx, |
| 146 Mul, |
| 147 Mulss, |
| 148 Or, |
| 149 Pop, |
| 150 Push, |
| 151 Ret, |
| 152 Sar, |
| 153 Sbb, |
| 154 Shl, |
| 155 Shld, |
| 156 Shr, |
| 157 Shrd, |
| 158 Store, |
| 159 Sub, |
| 160 Subss, |
| 161 Test, |
| 162 Ucomiss, |
| 163 Xor |
| 164 }; |
| 165 static const char *getWidthString(Type Ty); |
| 166 virtual void emit(const Cfg *Func) const = 0; |
| 167 virtual void dump(const Cfg *Func) const; |
| 168 |
| 169 protected: |
| 170 InstX8632(Cfg *Func, InstKindX8632 Kind, SizeT Maxsrcs, Variable *Dest) |
| 171 : InstTarget(Func, static_cast<InstKind>(Kind), Maxsrcs, Dest) {} |
| 172 virtual ~InstX8632() {} |
| 173 static bool isClassof(const Inst *Inst, InstKindX8632 MyKind) { |
| 174 return Inst->getKind() == static_cast<InstKind>(MyKind); |
| 175 } |
| 176 |
| 177 private: |
| 178 InstX8632(const InstX8632 &) LLVM_DELETED_FUNCTION; |
| 179 InstX8632 &operator=(const InstX8632 &) LLVM_DELETED_FUNCTION; |
| 180 }; |
| 181 |
| 182 // InstX8632Label represents an intra-block label that is the |
| 183 // target of an intra-block branch. These are used for lowering i1 |
| 184 // calculations, Select instructions, and 64-bit compares on a 32-bit |
| 185 // architecture, without basic block splitting. Basic block splitting |
| 186 // is not so desirable for several reasons, one of which is the impact |
| 187 // on decisions based on whether a variable's live range spans |
| 188 // multiple basic blocks. |
| 189 // |
| 190 // Intra-block control flow must be used with caution. Consider the |
| 191 // sequence for "c = (a >= b ? x : y)". |
| 192 // cmp a, b |
| 193 // br lt, L1 |
| 194 // mov c, x |
| 195 // jmp L2 |
| 196 // L1: |
| 197 // mov c, y |
| 198 // L2: |
| 199 // |
| 200 // Labels L1 and L2 are intra-block labels. Without knowledge of the |
| 201 // intra-block control flow, liveness analysis will determine the "mov |
| 202 // c, x" instruction to be dead. One way to prevent this is to insert |
| 203 // a "FakeUse(c)" instruction anywhere between the two "mov c, ..." |
| 204 // instructions, e.g.: |
| 205 // |
| 206 // cmp a, b |
| 207 // br lt, L1 |
| 208 // mov c, x |
| 209 // jmp L2 |
| 210 // FakeUse(c) |
| 211 // L1: |
| 212 // mov c, y |
| 213 // L2: |
| 214 // |
| 215 // The down-side is that "mov c, x" can never be dead-code eliminated |
| 216 // even if there are no uses of c. As unlikely as this situation is, |
| 217 // it may be prevented by running dead code elimination before |
| 218 // lowering. |
| 219 class InstX8632Label : public InstX8632 { |
| 220 public: |
| 221 static InstX8632Label *create(Cfg *Func, TargetX8632 *Target) { |
| 222 return new (Func->allocate<InstX8632Label>()) InstX8632Label(Func, Target); |
| 223 } |
| 224 IceString getName(const Cfg *Func) const; |
| 225 virtual void emit(const Cfg *Func) const; |
| 226 virtual void dump(const Cfg *Func) const; |
| 227 |
| 228 private: |
| 229 InstX8632Label(Cfg *Func, TargetX8632 *Target); |
| 230 InstX8632Label(const InstX8632Label &) LLVM_DELETED_FUNCTION; |
| 231 InstX8632Label &operator=(const InstX8632Label &) LLVM_DELETED_FUNCTION; |
| 232 virtual ~InstX8632Label() {} |
| 233 SizeT Number; // used only for unique label string generation |
| 234 }; |
| 235 |
| 236 // Conditional and unconditional branch instruction. |
| 237 class InstX8632Br : public InstX8632 { |
| 238 public: |
| 239 enum BrCond { |
| 240 #define X(tag, dump, emit) tag, |
| 241 ICEINSTX8632BR_TABLE |
| 242 #undef X |
| 243 Br_None |
| 244 }; |
| 245 |
| 246 // Create a conditional branch to a node. |
| 247 static InstX8632Br *create(Cfg *Func, CfgNode *TargetTrue, |
| 248 CfgNode *TargetFalse, BrCond Condition) { |
| 249 return new (Func->allocate<InstX8632Br>()) |
| 250 InstX8632Br(Func, TargetTrue, TargetFalse, NULL, Condition); |
| 251 } |
| 252 // Create an unconditional branch to a node. |
| 253 static InstX8632Br *create(Cfg *Func, CfgNode *Target) { |
| 254 return new (Func->allocate<InstX8632Br>()) |
| 255 InstX8632Br(Func, NULL, Target, NULL, Br_None); |
| 256 } |
| 257 // Create a non-terminator conditional branch to a node, with a |
| 258 // fallthrough to the next instruction in the current node. This is |
| 259 // used for switch lowering. |
| 260 static InstX8632Br *create(Cfg *Func, CfgNode *Target, BrCond Condition) { |
| 261 return new (Func->allocate<InstX8632Br>()) |
| 262 InstX8632Br(Func, Target, NULL, NULL, Condition); |
| 263 } |
| 264 // Create a conditional intra-block branch (or unconditional, if |
| 265 // Condition==None) to a label in the current block. |
| 266 static InstX8632Br *create(Cfg *Func, InstX8632Label *Label, |
| 267 BrCond Condition) { |
| 268 return new (Func->allocate<InstX8632Br>()) |
| 269 InstX8632Br(Func, NULL, NULL, Label, Condition); |
| 270 } |
| 271 CfgNode *getTargetTrue() const { return TargetTrue; } |
| 272 CfgNode *getTargetFalse() const { return TargetFalse; } |
| 273 virtual void emit(const Cfg *Func) const; |
| 274 virtual void dump(const Cfg *Func) const; |
| 275 static bool classof(const Inst *Inst) { return isClassof(Inst, Br); } |
| 276 |
| 277 private: |
| 278 InstX8632Br(Cfg *Func, CfgNode *TargetTrue, CfgNode *TargetFalse, |
| 279 InstX8632Label *Label, BrCond Condition); |
| 280 InstX8632Br(const InstX8632Br &) LLVM_DELETED_FUNCTION; |
| 281 InstX8632Br &operator=(const InstX8632Br &) LLVM_DELETED_FUNCTION; |
| 282 virtual ~InstX8632Br() {} |
| 283 BrCond Condition; |
| 284 CfgNode *TargetTrue; |
| 285 CfgNode *TargetFalse; |
| 286 InstX8632Label *Label; // Intra-block branch target |
| 287 }; |
| 288 |
| 289 // Call instruction. Arguments should have already been pushed. |
| 290 class InstX8632Call : public InstX8632 { |
| 291 public: |
| 292 static InstX8632Call *create(Cfg *Func, Variable *Dest, Operand *CallTarget) { |
| 293 return new (Func->allocate<InstX8632Call>()) |
| 294 InstX8632Call(Func, Dest, CallTarget); |
| 295 } |
| 296 Operand *getCallTarget() const { return getSrc(0); } |
| 297 virtual void emit(const Cfg *Func) const; |
| 298 virtual void dump(const Cfg *Func) const; |
| 299 static bool classof(const Inst *Inst) { return isClassof(Inst, Call); } |
| 300 |
| 301 private: |
| 302 InstX8632Call(Cfg *Func, Variable *Dest, Operand *CallTarget); |
| 303 InstX8632Call(const InstX8632Call &) LLVM_DELETED_FUNCTION; |
| 304 InstX8632Call &operator=(const InstX8632Call &) LLVM_DELETED_FUNCTION; |
| 305 virtual ~InstX8632Call() {} |
| 306 }; |
| 307 |
| 308 // See the definition of emitTwoAddress() for a description of |
| 309 // ShiftHack. |
| 310 void emitTwoAddress(const char *Opcode, const Inst *Inst, const Cfg *Func, |
| 311 bool ShiftHack = false); |
| 312 |
| 313 template <InstX8632::InstKindX8632 K, bool ShiftHack = false> |
| 314 class InstX8632Binop : public InstX8632 { |
| 315 public: |
| 316 // Create an ordinary binary-op instruction like add or sub. |
| 317 static InstX8632Binop *create(Cfg *Func, Variable *Dest, Operand *Source) { |
| 318 return new (Func->allocate<InstX8632Binop>()) |
| 319 InstX8632Binop(Func, Dest, Source); |
| 320 } |
| 321 virtual void emit(const Cfg *Func) const { |
| 322 emitTwoAddress(Opcode, this, Func, ShiftHack); |
| 323 } |
| 324 virtual void dump(const Cfg *Func) const { |
| 325 Ostream &Str = Func->getContext()->getStrDump(); |
| 326 dumpDest(Func); |
| 327 Str << " = " << Opcode << "." << getDest()->getType() << " "; |
| 328 dumpSources(Func); |
| 329 } |
| 330 static bool classof(const Inst *Inst) { return isClassof(Inst, K); } |
| 331 |
| 332 private: |
| 333 InstX8632Binop(Cfg *Func, Variable *Dest, Operand *Source) |
| 334 : InstX8632(Func, K, 2, Dest) { |
| 335 addSource(Dest); |
| 336 addSource(Source); |
| 337 } |
| 338 InstX8632Binop(const InstX8632Binop &) LLVM_DELETED_FUNCTION; |
| 339 InstX8632Binop &operator=(const InstX8632Binop &) LLVM_DELETED_FUNCTION; |
| 340 virtual ~InstX8632Binop() {} |
| 341 static const char *Opcode; |
| 342 }; |
| 343 |
| 344 template <InstX8632::InstKindX8632 K> class InstX8632Ternop : public InstX8632 { |
| 345 public: |
| 346 // Create a ternary-op instruction like div or idiv. |
| 347 static InstX8632Ternop *create(Cfg *Func, Variable *Dest, Operand *Source1, |
| 348 Operand *Source2) { |
| 349 return new (Func->allocate<InstX8632Ternop>()) |
| 350 InstX8632Ternop(Func, Dest, Source1, Source2); |
| 351 } |
| 352 virtual void emit(const Cfg *Func) const { |
| 353 Ostream &Str = Func->getContext()->getStrEmit(); |
| 354 assert(getSrcSize() == 3); |
| 355 Str << "\t" << Opcode << "\t"; |
| 356 getSrc(1)->emit(Func); |
| 357 Str << "\n"; |
| 358 } |
| 359 virtual void dump(const Cfg *Func) const { |
| 360 Ostream &Str = Func->getContext()->getStrDump(); |
| 361 dumpDest(Func); |
| 362 Str << " = " << Opcode << "." << getDest()->getType() << " "; |
| 363 dumpSources(Func); |
| 364 } |
| 365 static bool classof(const Inst *Inst) { return isClassof(Inst, K); } |
| 366 |
| 367 private: |
| 368 InstX8632Ternop(Cfg *Func, Variable *Dest, Operand *Source1, Operand *Source2) |
| 369 : InstX8632(Func, K, 3, Dest) { |
| 370 addSource(Dest); |
| 371 addSource(Source1); |
| 372 addSource(Source2); |
| 373 } |
| 374 InstX8632Ternop(const InstX8632Ternop &) LLVM_DELETED_FUNCTION; |
| 375 InstX8632Ternop &operator=(const InstX8632Ternop &) LLVM_DELETED_FUNCTION; |
| 376 virtual ~InstX8632Ternop() {} |
| 377 static const char *Opcode; |
| 378 }; |
| 379 |
| 380 typedef InstX8632Binop<InstX8632::Add> InstX8632Add; |
| 381 typedef InstX8632Binop<InstX8632::Adc> InstX8632Adc; |
| 382 typedef InstX8632Binop<InstX8632::Addss> InstX8632Addss; |
| 383 typedef InstX8632Binop<InstX8632::Sub> InstX8632Sub; |
| 384 typedef InstX8632Binop<InstX8632::Subss> InstX8632Subss; |
| 385 typedef InstX8632Binop<InstX8632::Sbb> InstX8632Sbb; |
| 386 typedef InstX8632Binop<InstX8632::And> InstX8632And; |
| 387 typedef InstX8632Binop<InstX8632::Or> InstX8632Or; |
| 388 typedef InstX8632Binop<InstX8632::Xor> InstX8632Xor; |
| 389 typedef InstX8632Binop<InstX8632::Imul> InstX8632Imul; |
| 390 typedef InstX8632Binop<InstX8632::Mulss> InstX8632Mulss; |
| 391 typedef InstX8632Binop<InstX8632::Divss> InstX8632Divss; |
| 392 typedef InstX8632Binop<InstX8632::Shl, true> InstX8632Shl; |
| 393 typedef InstX8632Binop<InstX8632::Shr, true> InstX8632Shr; |
| 394 typedef InstX8632Binop<InstX8632::Sar, true> InstX8632Sar; |
| 395 typedef InstX8632Ternop<InstX8632::Idiv> InstX8632Idiv; |
| 396 typedef InstX8632Ternop<InstX8632::Div> InstX8632Div; |
| 397 |
| 398 // Mul instruction - unsigned multiply. |
| 399 class InstX8632Mul : public InstX8632 { |
| 400 public: |
| 401 static InstX8632Mul *create(Cfg *Func, Variable *Dest, Variable *Source1, |
| 402 Operand *Source2) { |
| 403 return new (Func->allocate<InstX8632Mul>()) |
| 404 InstX8632Mul(Func, Dest, Source1, Source2); |
| 405 } |
| 406 virtual void emit(const Cfg *Func) const; |
| 407 virtual void dump(const Cfg *Func) const; |
| 408 static bool classof(const Inst *Inst) { return isClassof(Inst, Mul); } |
| 409 |
| 410 private: |
| 411 InstX8632Mul(Cfg *Func, Variable *Dest, Variable *Source1, Operand *Source2); |
| 412 InstX8632Mul(const InstX8632Mul &) LLVM_DELETED_FUNCTION; |
| 413 InstX8632Mul &operator=(const InstX8632Mul &) LLVM_DELETED_FUNCTION; |
| 414 virtual ~InstX8632Mul() {} |
| 415 }; |
| 416 |
| 417 // Shld instruction - shift across a pair of operands. TODO: Verify |
| 418 // that the validator accepts the shld instruction. |
| 419 class InstX8632Shld : public InstX8632 { |
| 420 public: |
| 421 static InstX8632Shld *create(Cfg *Func, Variable *Dest, Variable *Source1, |
| 422 Variable *Source2) { |
| 423 return new (Func->allocate<InstX8632Shld>()) |
| 424 InstX8632Shld(Func, Dest, Source1, Source2); |
| 425 } |
| 426 virtual void emit(const Cfg *Func) const; |
| 427 virtual void dump(const Cfg *Func) const; |
| 428 static bool classof(const Inst *Inst) { return isClassof(Inst, Shld); } |
| 429 |
| 430 private: |
| 431 InstX8632Shld(Cfg *Func, Variable *Dest, Variable *Source1, |
| 432 Variable *Source2); |
| 433 InstX8632Shld(const InstX8632Shld &) LLVM_DELETED_FUNCTION; |
| 434 InstX8632Shld &operator=(const InstX8632Shld &) LLVM_DELETED_FUNCTION; |
| 435 virtual ~InstX8632Shld() {} |
| 436 }; |
| 437 |
| 438 // Shrd instruction - shift across a pair of operands. TODO: Verify |
| 439 // that the validator accepts the shrd instruction. |
| 440 class InstX8632Shrd : public InstX8632 { |
| 441 public: |
| 442 static InstX8632Shrd *create(Cfg *Func, Variable *Dest, Variable *Source1, |
| 443 Variable *Source2) { |
| 444 return new (Func->allocate<InstX8632Shrd>()) |
| 445 InstX8632Shrd(Func, Dest, Source1, Source2); |
| 446 } |
| 447 virtual void emit(const Cfg *Func) const; |
| 448 virtual void dump(const Cfg *Func) const; |
| 449 static bool classof(const Inst *Inst) { return isClassof(Inst, Shrd); } |
| 450 |
| 451 private: |
| 452 InstX8632Shrd(Cfg *Func, Variable *Dest, Variable *Source1, |
| 453 Variable *Source2); |
| 454 InstX8632Shrd(const InstX8632Shrd &) LLVM_DELETED_FUNCTION; |
| 455 InstX8632Shrd &operator=(const InstX8632Shrd &) LLVM_DELETED_FUNCTION; |
| 456 virtual ~InstX8632Shrd() {} |
| 457 }; |
| 458 |
| 459 // Cdq instruction - sign-extend eax into edx |
| 460 class InstX8632Cdq : public InstX8632 { |
| 461 public: |
| 462 static InstX8632Cdq *create(Cfg *Func, Variable *Dest, Operand *Source) { |
| 463 return new (Func->allocate<InstX8632Cdq>()) |
| 464 InstX8632Cdq(Func, Dest, Source); |
| 465 } |
| 466 virtual void emit(const Cfg *Func) const; |
| 467 virtual void dump(const Cfg *Func) const; |
| 468 static bool classof(const Inst *Inst) { return isClassof(Inst, Cdq); } |
| 469 |
| 470 private: |
| 471 InstX8632Cdq(Cfg *Func, Variable *Dest, Operand *Source); |
| 472 InstX8632Cdq(const InstX8632Cdq &) LLVM_DELETED_FUNCTION; |
| 473 InstX8632Cdq &operator=(const InstX8632Cdq &) LLVM_DELETED_FUNCTION; |
| 474 virtual ~InstX8632Cdq() {} |
| 475 }; |
| 476 |
| 477 // Cvt instruction - wrapper for cvtsX2sY where X and Y are in {s,d,i} |
| 478 // as appropriate. s=float, d=double, i=int. X and Y are determined |
| 479 // from dest/src types. Sign and zero extension on the integer |
| 480 // operand needs to be done separately. |
| 481 class InstX8632Cvt : public InstX8632 { |
| 482 public: |
| 483 static InstX8632Cvt *create(Cfg *Func, Variable *Dest, Operand *Source) { |
| 484 return new (Func->allocate<InstX8632Cvt>()) |
| 485 InstX8632Cvt(Func, Dest, Source); |
| 486 } |
| 487 virtual void emit(const Cfg *Func) const; |
| 488 virtual void dump(const Cfg *Func) const; |
| 489 static bool classof(const Inst *Inst) { return isClassof(Inst, Cvt); } |
| 490 |
| 491 private: |
| 492 InstX8632Cvt(Cfg *Func, Variable *Dest, Operand *Source); |
| 493 InstX8632Cvt(const InstX8632Cvt &) LLVM_DELETED_FUNCTION; |
| 494 InstX8632Cvt &operator=(const InstX8632Cvt &) LLVM_DELETED_FUNCTION; |
| 495 virtual ~InstX8632Cvt() {} |
| 496 }; |
| 497 |
| 498 // cmp - Integer compare instruction. |
| 499 class InstX8632Icmp : public InstX8632 { |
| 500 public: |
| 501 static InstX8632Icmp *create(Cfg *Func, Operand *Src1, Operand *Src2) { |
| 502 return new (Func->allocate<InstX8632Icmp>()) |
| 503 InstX8632Icmp(Func, Src1, Src2); |
| 504 } |
| 505 virtual void emit(const Cfg *Func) const; |
| 506 virtual void dump(const Cfg *Func) const; |
| 507 static bool classof(const Inst *Inst) { return isClassof(Inst, Icmp); } |
| 508 |
| 509 private: |
| 510 InstX8632Icmp(Cfg *Func, Operand *Src1, Operand *Src2); |
| 511 InstX8632Icmp(const InstX8632Icmp &) LLVM_DELETED_FUNCTION; |
| 512 InstX8632Icmp &operator=(const InstX8632Icmp &) LLVM_DELETED_FUNCTION; |
| 513 virtual ~InstX8632Icmp() {} |
| 514 }; |
| 515 |
| 516 // ucomiss/ucomisd - floating-point compare instruction. |
| 517 class InstX8632Ucomiss : public InstX8632 { |
| 518 public: |
| 519 static InstX8632Ucomiss *create(Cfg *Func, Operand *Src1, Operand *Src2) { |
| 520 return new (Func->allocate<InstX8632Ucomiss>()) |
| 521 InstX8632Ucomiss(Func, Src1, Src2); |
| 522 } |
| 523 virtual void emit(const Cfg *Func) const; |
| 524 virtual void dump(const Cfg *Func) const; |
| 525 static bool classof(const Inst *Inst) { return isClassof(Inst, Ucomiss); } |
| 526 |
| 527 private: |
| 528 InstX8632Ucomiss(Cfg *Func, Operand *Src1, Operand *Src2); |
| 529 InstX8632Ucomiss(const InstX8632Ucomiss &) LLVM_DELETED_FUNCTION; |
| 530 InstX8632Ucomiss &operator=(const InstX8632Ucomiss &) LLVM_DELETED_FUNCTION; |
| 531 virtual ~InstX8632Ucomiss() {} |
| 532 }; |
| 533 |
| 534 // Test instruction. |
| 535 class InstX8632Test : public InstX8632 { |
| 536 public: |
| 537 static InstX8632Test *create(Cfg *Func, Operand *Source1, Operand *Source2) { |
| 538 return new (Func->allocate<InstX8632Test>()) |
| 539 InstX8632Test(Func, Source1, Source2); |
| 540 } |
| 541 virtual void emit(const Cfg *Func) const; |
| 542 virtual void dump(const Cfg *Func) const; |
| 543 static bool classof(const Inst *Inst) { return isClassof(Inst, Test); } |
| 544 |
| 545 private: |
| 546 InstX8632Test(Cfg *Func, Operand *Source1, Operand *Source2); |
| 547 InstX8632Test(const InstX8632Test &) LLVM_DELETED_FUNCTION; |
| 548 InstX8632Test &operator=(const InstX8632Test &) LLVM_DELETED_FUNCTION; |
| 549 virtual ~InstX8632Test() {} |
| 550 }; |
| 551 |
| 552 // This is essentially a "mov" instruction with an OperandX8632Mem |
| 553 // operand instead of Variable as the destination. It's important |
| 554 // for liveness that there is no Dest operand. |
| 555 class InstX8632Store : public InstX8632 { |
| 556 public: |
| 557 static InstX8632Store *create(Cfg *Func, Operand *Value, OperandX8632 *Mem) { |
| 558 return new (Func->allocate<InstX8632Store>()) |
| 559 InstX8632Store(Func, Value, Mem); |
| 560 } |
| 561 virtual void emit(const Cfg *Func) const; |
| 562 virtual void dump(const Cfg *Func) const; |
| 563 static bool classof(const Inst *Inst) { return isClassof(Inst, Store); } |
| 564 |
| 565 private: |
| 566 InstX8632Store(Cfg *Func, Operand *Value, OperandX8632 *Mem); |
| 567 InstX8632Store(const InstX8632Store &) LLVM_DELETED_FUNCTION; |
| 568 InstX8632Store &operator=(const InstX8632Store &) LLVM_DELETED_FUNCTION; |
| 569 virtual ~InstX8632Store() {} |
| 570 }; |
| 571 |
| 572 // Move/assignment instruction - wrapper for mov/movss/movsd. |
| 573 class InstX8632Mov : public InstX8632 { |
| 574 public: |
| 575 static InstX8632Mov *create(Cfg *Func, Variable *Dest, Operand *Source) { |
| 576 return new (Func->allocate<InstX8632Mov>()) |
| 577 InstX8632Mov(Func, Dest, Source); |
| 578 } |
| 579 virtual bool isRedundantAssign() const; |
| 580 virtual void emit(const Cfg *Func) const; |
| 581 virtual void dump(const Cfg *Func) const; |
| 582 static bool classof(const Inst *Inst) { return isClassof(Inst, Mov); } |
| 583 |
| 584 private: |
| 585 InstX8632Mov(Cfg *Func, Variable *Dest, Operand *Source); |
| 586 InstX8632Mov(const InstX8632Mov &) LLVM_DELETED_FUNCTION; |
| 587 InstX8632Mov &operator=(const InstX8632Mov &) LLVM_DELETED_FUNCTION; |
| 588 virtual ~InstX8632Mov() {} |
| 589 }; |
| 590 |
| 591 // Movsx - copy from a narrower integer type to a wider integer |
| 592 // type, with sign extension. |
| 593 class InstX8632Movsx : public InstX8632 { |
| 594 public: |
| 595 static InstX8632Movsx *create(Cfg *Func, Variable *Dest, Operand *Source) { |
| 596 return new (Func->allocate<InstX8632Movsx>()) |
| 597 InstX8632Movsx(Func, Dest, Source); |
| 598 } |
| 599 virtual void emit(const Cfg *Func) const; |
| 600 virtual void dump(const Cfg *Func) const; |
| 601 static bool classof(const Inst *Inst) { return isClassof(Inst, Movsx); } |
| 602 |
| 603 private: |
| 604 InstX8632Movsx(Cfg *Func, Variable *Dest, Operand *Source); |
| 605 InstX8632Movsx(const InstX8632Movsx &) LLVM_DELETED_FUNCTION; |
| 606 InstX8632Movsx &operator=(const InstX8632Movsx &) LLVM_DELETED_FUNCTION; |
| 607 virtual ~InstX8632Movsx() {} |
| 608 }; |
| 609 |
| 610 // Movsx - copy from a narrower integer type to a wider integer |
| 611 // type, with zero extension. |
| 612 class InstX8632Movzx : public InstX8632 { |
| 613 public: |
| 614 static InstX8632Movzx *create(Cfg *Func, Variable *Dest, Operand *Source) { |
| 615 return new (Func->allocate<InstX8632Movzx>()) |
| 616 InstX8632Movzx(Func, Dest, Source); |
| 617 } |
| 618 virtual void emit(const Cfg *Func) const; |
| 619 virtual void dump(const Cfg *Func) const; |
| 620 static bool classof(const Inst *Inst) { return isClassof(Inst, Movzx); } |
| 621 |
| 622 private: |
| 623 InstX8632Movzx(Cfg *Func, Variable *Dest, Operand *Source); |
| 624 InstX8632Movzx(const InstX8632Movzx &) LLVM_DELETED_FUNCTION; |
| 625 InstX8632Movzx &operator=(const InstX8632Movzx &) LLVM_DELETED_FUNCTION; |
| 626 virtual ~InstX8632Movzx() {} |
| 627 }; |
| 628 |
| 629 // Fld - load a value onto the x87 FP stack. |
| 630 class InstX8632Fld : public InstX8632 { |
| 631 public: |
| 632 static InstX8632Fld *create(Cfg *Func, Operand *Src) { |
| 633 return new (Func->allocate<InstX8632Fld>()) InstX8632Fld(Func, Src); |
| 634 } |
| 635 virtual void emit(const Cfg *Func) const; |
| 636 virtual void dump(const Cfg *Func) const; |
| 637 static bool classof(const Inst *Inst) { return isClassof(Inst, Fld); } |
| 638 |
| 639 private: |
| 640 InstX8632Fld(Cfg *Func, Operand *Src); |
| 641 InstX8632Fld(const InstX8632Fld &) LLVM_DELETED_FUNCTION; |
| 642 InstX8632Fld &operator=(const InstX8632Fld &) LLVM_DELETED_FUNCTION; |
| 643 virtual ~InstX8632Fld() {} |
| 644 }; |
| 645 |
| 646 // Fstp - store x87 st(0) into memory and pop st(0). |
| 647 class InstX8632Fstp : public InstX8632 { |
| 648 public: |
| 649 static InstX8632Fstp *create(Cfg *Func, Variable *Dest) { |
| 650 return new (Func->allocate<InstX8632Fstp>()) InstX8632Fstp(Func, Dest); |
| 651 } |
| 652 virtual void emit(const Cfg *Func) const; |
| 653 virtual void dump(const Cfg *Func) const; |
| 654 static bool classof(const Inst *Inst) { return isClassof(Inst, Fstp); } |
| 655 |
| 656 private: |
| 657 InstX8632Fstp(Cfg *Func, Variable *Dest); |
| 658 InstX8632Fstp(const InstX8632Fstp &) LLVM_DELETED_FUNCTION; |
| 659 InstX8632Fstp &operator=(const InstX8632Fstp &) LLVM_DELETED_FUNCTION; |
| 660 virtual ~InstX8632Fstp() {} |
| 661 }; |
| 662 |
| 663 class InstX8632Pop : public InstX8632 { |
| 664 public: |
| 665 static InstX8632Pop *create(Cfg *Func, Variable *Dest) { |
| 666 return new (Func->allocate<InstX8632Pop>()) InstX8632Pop(Func, Dest); |
| 667 } |
| 668 virtual void emit(const Cfg *Func) const; |
| 669 virtual void dump(const Cfg *Func) const; |
| 670 static bool classof(const Inst *Inst) { return isClassof(Inst, Pop); } |
| 671 |
| 672 private: |
| 673 InstX8632Pop(Cfg *Func, Variable *Dest); |
| 674 InstX8632Pop(const InstX8632Pop &) LLVM_DELETED_FUNCTION; |
| 675 InstX8632Pop &operator=(const InstX8632Pop &) LLVM_DELETED_FUNCTION; |
| 676 virtual ~InstX8632Pop() {} |
| 677 }; |
| 678 |
| 679 class InstX8632Push : public InstX8632 { |
| 680 public: |
| 681 static InstX8632Push *create(Cfg *Func, Operand *Source, |
| 682 bool SuppressStackAdjustment) { |
| 683 return new (Func->allocate<InstX8632Push>()) |
| 684 InstX8632Push(Func, Source, SuppressStackAdjustment); |
| 685 } |
| 686 virtual void emit(const Cfg *Func) const; |
| 687 virtual void dump(const Cfg *Func) const; |
| 688 static bool classof(const Inst *Inst) { return isClassof(Inst, Push); } |
| 689 |
| 690 private: |
| 691 InstX8632Push(Cfg *Func, Operand *Source, bool SuppressStackAdjustment); |
| 692 InstX8632Push(const InstX8632Push &) LLVM_DELETED_FUNCTION; |
| 693 InstX8632Push &operator=(const InstX8632Push &) LLVM_DELETED_FUNCTION; |
| 694 bool SuppressStackAdjustment; |
| 695 virtual ~InstX8632Push() {} |
| 696 }; |
| 697 |
| 698 // Ret instruction. Currently only supports the "ret" version that |
| 699 // does not pop arguments. This instruction takes a Source operand |
| 700 // (for non-void returning functions) for liveness analysis, though |
| 701 // a FakeUse before the ret would do just as well. |
| 702 class InstX8632Ret : public InstX8632 { |
| 703 public: |
| 704 static InstX8632Ret *create(Cfg *Func, Variable *Source = NULL) { |
| 705 return new (Func->allocate<InstX8632Ret>()) InstX8632Ret(Func, Source); |
| 706 } |
| 707 virtual void emit(const Cfg *Func) const; |
| 708 virtual void dump(const Cfg *Func) const; |
| 709 static bool classof(const Inst *Inst) { return isClassof(Inst, Ret); } |
| 710 |
| 711 private: |
| 712 InstX8632Ret(Cfg *Func, Variable *Source); |
| 713 InstX8632Ret(const InstX8632Ret &) LLVM_DELETED_FUNCTION; |
| 714 InstX8632Ret &operator=(const InstX8632Ret &) LLVM_DELETED_FUNCTION; |
| 715 virtual ~InstX8632Ret() {} |
| 716 }; |
| 717 |
| 718 } // end of namespace Ice |
| 719 |
| 720 #endif // SUBZERO_SRC_ICEINSTX8632_H |
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