1 /* 2 * Copyright (c) 2000, 2023, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_C1_C1_LIR_HPP 26 #define SHARE_C1_C1_LIR_HPP 27 28 #include "c1/c1_Defs.hpp" 29 #include "c1/c1_ValueType.hpp" 30 #include "oops/method.hpp" 31 #include "utilities/globalDefinitions.hpp" 32 33 class BlockBegin; 34 class BlockList; 35 class LIR_Assembler; 36 class CodeEmitInfo; 37 class CodeStub; 38 class CodeStubList; 39 class C1SafepointPollStub; 40 class ArrayCopyStub; 41 class LIR_Op; 42 class ciType; 43 class ValueType; 44 class LIR_OpVisitState; 45 class FpuStackSim; 46 47 //--------------------------------------------------------------------- 48 // LIR Operands 49 // LIR_OprPtr 50 // LIR_Const 51 // LIR_Address 52 //--------------------------------------------------------------------- 53 class LIR_OprPtr; 54 class LIR_Const; 55 class LIR_Address; 56 class LIR_OprVisitor; 57 class LIR_Opr; 58 59 typedef int RegNr; 60 61 typedef GrowableArray<LIR_Opr> LIR_OprList; 62 typedef GrowableArray<LIR_Op*> LIR_OpArray; 63 typedef GrowableArray<LIR_Op*> LIR_OpList; 64 65 // define LIR_OprPtr early so LIR_Opr can refer to it 66 class LIR_OprPtr: public CompilationResourceObj { 67 public: 68 bool is_oop_pointer() const { return (type() == T_OBJECT); } 69 bool is_float_kind() const { BasicType t = type(); return (t == T_FLOAT) || (t == T_DOUBLE); } 70 71 virtual LIR_Const* as_constant() { return nullptr; } 72 virtual LIR_Address* as_address() { return nullptr; } 73 virtual BasicType type() const = 0; 74 virtual void print_value_on(outputStream* out) const = 0; 75 }; 76 77 78 79 // LIR constants 80 class LIR_Const: public LIR_OprPtr { 81 private: 82 JavaValue _value; 83 84 void type_check(BasicType t) const { assert(type() == t, "type check"); } 85 void type_check(BasicType t1, BasicType t2) const { assert(type() == t1 || type() == t2, "type check"); } 86 void type_check(BasicType t1, BasicType t2, BasicType t3) const { assert(type() == t1 || type() == t2 || type() == t3, "type check"); } 87 88 public: 89 LIR_Const(jint i, bool is_address=false) { _value.set_type(is_address?T_ADDRESS:T_INT); _value.set_jint(i); } 90 LIR_Const(jlong l) { _value.set_type(T_LONG); _value.set_jlong(l); } 91 LIR_Const(jfloat f) { _value.set_type(T_FLOAT); _value.set_jfloat(f); } 92 LIR_Const(jdouble d) { _value.set_type(T_DOUBLE); _value.set_jdouble(d); } 93 LIR_Const(jobject o) { _value.set_type(T_OBJECT); _value.set_jobject(o); } 94 LIR_Const(void* p) { 95 #ifdef _LP64 96 assert(sizeof(jlong) >= sizeof(p), "too small");; 97 _value.set_type(T_LONG); _value.set_jlong((jlong)p); 98 #else 99 assert(sizeof(jint) >= sizeof(p), "too small");; 100 _value.set_type(T_INT); _value.set_jint((jint)p); 101 #endif 102 } 103 LIR_Const(Metadata* m) { 104 _value.set_type(T_METADATA); 105 #ifdef _LP64 106 _value.set_jlong((jlong)m); 107 #else 108 _value.set_jint((jint)m); 109 #endif // _LP64 110 } 111 112 virtual BasicType type() const { return _value.get_type(); } 113 virtual LIR_Const* as_constant() { return this; } 114 115 jint as_jint() const { type_check(T_INT, T_ADDRESS); return _value.get_jint(); } 116 jlong as_jlong() const { type_check(T_LONG ); return _value.get_jlong(); } 117 jfloat as_jfloat() const { type_check(T_FLOAT ); return _value.get_jfloat(); } 118 jdouble as_jdouble() const { type_check(T_DOUBLE); return _value.get_jdouble(); } 119 jobject as_jobject() const { type_check(T_OBJECT); return _value.get_jobject(); } 120 jint as_jint_lo() const { type_check(T_LONG ); return low(_value.get_jlong()); } 121 jint as_jint_hi() const { type_check(T_LONG ); return high(_value.get_jlong()); } 122 123 #ifdef _LP64 124 address as_pointer() const { type_check(T_LONG ); return (address)_value.get_jlong(); } 125 Metadata* as_metadata() const { type_check(T_METADATA); return (Metadata*)_value.get_jlong(); } 126 #else 127 address as_pointer() const { type_check(T_INT ); return (address)_value.get_jint(); } 128 Metadata* as_metadata() const { type_check(T_METADATA); return (Metadata*)_value.get_jint(); } 129 #endif 130 131 132 jint as_jint_bits() const { type_check(T_FLOAT, T_INT, T_ADDRESS); return _value.get_jint(); } 133 jint as_jint_lo_bits() const { 134 if (type() == T_DOUBLE) { 135 return low(jlong_cast(_value.get_jdouble())); 136 } else { 137 return as_jint_lo(); 138 } 139 } 140 jint as_jint_hi_bits() const { 141 if (type() == T_DOUBLE) { 142 return high(jlong_cast(_value.get_jdouble())); 143 } else { 144 return as_jint_hi(); 145 } 146 } 147 jlong as_jlong_bits() const { 148 if (type() == T_DOUBLE) { 149 return jlong_cast(_value.get_jdouble()); 150 } else { 151 return as_jlong(); 152 } 153 } 154 155 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN; 156 157 158 bool is_zero_float() { 159 jfloat f = as_jfloat(); 160 jfloat ok = 0.0f; 161 return jint_cast(f) == jint_cast(ok); 162 } 163 164 bool is_one_float() { 165 jfloat f = as_jfloat(); 166 return !g_isnan(f) && g_isfinite(f) && f == 1.0; 167 } 168 169 bool is_zero_double() { 170 jdouble d = as_jdouble(); 171 jdouble ok = 0.0; 172 return jlong_cast(d) == jlong_cast(ok); 173 } 174 175 bool is_one_double() { 176 jdouble d = as_jdouble(); 177 return !g_isnan(d) && g_isfinite(d) && d == 1.0; 178 } 179 }; 180 181 182 //---------------------LIR Operand descriptor------------------------------------ 183 // 184 // The class LIR_Opr represents a LIR instruction operand; 185 // it can be a register (ALU/FPU), stack location or a constant; 186 // Constants and addresses are represented as resource area allocated 187 // structures (see above), and pointers are stored in the _value field (cast to 188 // an intptr_t). 189 // Registers and stack locations are represented inline as integers. 190 // (see value function). 191 192 // Previously, this class was derived from CompilationResourceObj. 193 // However, deriving from any of the "Obj" types in allocation.hpp seems 194 // detrimental, since in some build modes it would add a vtable to this class, 195 // which make it no longer be a 1-word trivially-copyable wrapper object, 196 // which is the entire point of it. 197 198 class LIR_Opr { 199 public: 200 // value structure: 201 // data other-non-data opr-type opr-kind 202 // +-------------------+--------------+-------+-----+ 203 // [max...............................|6 5 4 3|2 1 0] 204 // ^ 205 // is_pointer bit 206 // 207 // lowest bit cleared, means it is a structure pointer 208 // we need 4 bits to represent types 209 210 private: 211 friend class LIR_OprFact; 212 213 intptr_t _value; 214 // Conversion 215 intptr_t value() const { return _value; } 216 217 bool check_value_mask(intptr_t mask, intptr_t masked_value) const { 218 return (value() & mask) == masked_value; 219 } 220 221 enum OprKind { 222 pointer_value = 0 223 , stack_value = 1 224 , cpu_register = 3 225 , fpu_register = 5 226 , illegal_value = 7 227 }; 228 229 enum OprBits { 230 pointer_bits = 1 231 , kind_bits = 3 232 , type_bits = 4 233 , size_bits = 2 234 , destroys_bits = 1 235 , virtual_bits = 1 236 , is_xmm_bits = 1 237 , last_use_bits = 1 238 , is_fpu_stack_offset_bits = 1 // used in assertion checking on x86 for FPU stack slot allocation 239 , non_data_bits = kind_bits + type_bits + size_bits + destroys_bits + virtual_bits 240 + is_xmm_bits + last_use_bits + is_fpu_stack_offset_bits 241 , data_bits = BitsPerInt - non_data_bits 242 , reg_bits = data_bits / 2 // for two registers in one value encoding 243 }; 244 245 enum OprShift : uintptr_t { 246 kind_shift = 0 247 , type_shift = kind_shift + kind_bits 248 , size_shift = type_shift + type_bits 249 , destroys_shift = size_shift + size_bits 250 , last_use_shift = destroys_shift + destroys_bits 251 , is_fpu_stack_offset_shift = last_use_shift + last_use_bits 252 , virtual_shift = is_fpu_stack_offset_shift + is_fpu_stack_offset_bits 253 , is_xmm_shift = virtual_shift + virtual_bits 254 , data_shift = is_xmm_shift + is_xmm_bits 255 , reg1_shift = data_shift 256 , reg2_shift = data_shift + reg_bits 257 258 }; 259 260 enum OprSize { 261 single_size = 0 << size_shift 262 , double_size = 1 << size_shift 263 }; 264 265 enum OprMask { 266 kind_mask = right_n_bits(kind_bits) 267 , type_mask = right_n_bits(type_bits) << type_shift 268 , size_mask = right_n_bits(size_bits) << size_shift 269 , last_use_mask = right_n_bits(last_use_bits) << last_use_shift 270 , is_fpu_stack_offset_mask = right_n_bits(is_fpu_stack_offset_bits) << is_fpu_stack_offset_shift 271 , virtual_mask = right_n_bits(virtual_bits) << virtual_shift 272 , is_xmm_mask = right_n_bits(is_xmm_bits) << is_xmm_shift 273 , pointer_mask = right_n_bits(pointer_bits) 274 , lower_reg_mask = right_n_bits(reg_bits) 275 , no_type_mask = (int)(~(type_mask | last_use_mask | is_fpu_stack_offset_mask)) 276 }; 277 278 uint32_t data() const { return (uint32_t)value() >> data_shift; } 279 int lo_reg_half() const { return data() & lower_reg_mask; } 280 int hi_reg_half() const { return (data() >> reg_bits) & lower_reg_mask; } 281 OprKind kind_field() const { return (OprKind)(value() & kind_mask); } 282 OprSize size_field() const { return (OprSize)(value() & size_mask); } 283 284 static char type_char(BasicType t); 285 286 public: 287 LIR_Opr() : _value(0) {} 288 LIR_Opr(intptr_t val) : _value(val) {} 289 LIR_Opr(LIR_OprPtr *val) : _value(reinterpret_cast<intptr_t>(val)) {} 290 bool operator==(const LIR_Opr &other) const { return _value == other._value; } 291 bool operator!=(const LIR_Opr &other) const { return _value != other._value; } 292 explicit operator bool() const { return _value != 0; } 293 294 // UGLY HACK: make this value object look like a pointer (to itself). This 295 // operator overload should be removed, and all callers updated from 296 // `opr->fn()` to `opr.fn()`. 297 const LIR_Opr* operator->() const { return this; } 298 LIR_Opr* operator->() { return this; } 299 300 enum { 301 vreg_base = ConcreteRegisterImpl::number_of_registers, 302 data_max = (1 << data_bits) - 1, // max unsigned value for data bit field 303 vreg_limit = 10000, // choose a reasonable limit, 304 vreg_max = MIN2(vreg_limit, data_max) // and make sure if fits in the bit field 305 }; 306 307 static inline LIR_Opr illegalOpr(); 308 static inline LIR_Opr nullOpr(); 309 310 enum OprType { 311 unknown_type = 0 << type_shift // means: not set (catch uninitialized types) 312 , int_type = 1 << type_shift 313 , long_type = 2 << type_shift 314 , object_type = 3 << type_shift 315 , address_type = 4 << type_shift 316 , float_type = 5 << type_shift 317 , double_type = 6 << type_shift 318 , metadata_type = 7 << type_shift 319 }; 320 friend OprType as_OprType(BasicType t); 321 friend BasicType as_BasicType(OprType t); 322 323 OprType type_field_valid() const { assert(is_register() || is_stack(), "should not be called otherwise"); return (OprType)(value() & type_mask); } 324 OprType type_field() const { return is_illegal() ? unknown_type : (OprType)(value() & type_mask); } 325 326 static OprSize size_for(BasicType t) { 327 switch (t) { 328 case T_LONG: 329 case T_DOUBLE: 330 return double_size; 331 break; 332 333 case T_FLOAT: 334 case T_BOOLEAN: 335 case T_CHAR: 336 case T_BYTE: 337 case T_SHORT: 338 case T_INT: 339 case T_ADDRESS: 340 case T_OBJECT: 341 case T_ARRAY: 342 case T_METADATA: 343 return single_size; 344 break; 345 346 default: 347 ShouldNotReachHere(); 348 return single_size; 349 } 350 } 351 352 353 void validate_type() const PRODUCT_RETURN; 354 355 BasicType type() const { 356 if (is_pointer()) { 357 return pointer()->type(); 358 } 359 return as_BasicType(type_field()); 360 } 361 362 363 ValueType* value_type() const { return as_ValueType(type()); } 364 365 char type_char() const { return type_char((is_pointer()) ? pointer()->type() : type()); } 366 367 bool is_equal(LIR_Opr opr) const { return *this == opr; } 368 // checks whether types are same 369 bool is_same_type(LIR_Opr opr) const { 370 assert(type_field() != unknown_type && 371 opr->type_field() != unknown_type, "shouldn't see unknown_type"); 372 return type_field() == opr->type_field(); 373 } 374 bool is_same_register(LIR_Opr opr) { 375 return (is_register() && opr->is_register() && 376 kind_field() == opr->kind_field() && 377 (value() & no_type_mask) == (opr->value() & no_type_mask)); 378 } 379 380 bool is_pointer() const { return check_value_mask(pointer_mask, pointer_value); } 381 bool is_illegal() const { return kind_field() == illegal_value; } 382 bool is_valid() const { return kind_field() != illegal_value; } 383 384 bool is_register() const { return is_cpu_register() || is_fpu_register(); } 385 bool is_virtual() const { return is_virtual_cpu() || is_virtual_fpu(); } 386 387 bool is_constant() const { return is_pointer() && pointer()->as_constant() != nullptr; } 388 bool is_address() const { return is_pointer() && pointer()->as_address() != nullptr; } 389 390 bool is_float_kind() const { return is_pointer() ? pointer()->is_float_kind() : (kind_field() == fpu_register); } 391 bool is_oop() const; 392 393 // semantic for fpu- and xmm-registers: 394 // * is_float and is_double return true for xmm_registers 395 // (so is_single_fpu and is_single_xmm are true) 396 // * So you must always check for is_???_xmm prior to is_???_fpu to 397 // distinguish between fpu- and xmm-registers 398 399 bool is_stack() const { validate_type(); return check_value_mask(kind_mask, stack_value); } 400 bool is_single_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | single_size); } 401 bool is_double_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | double_size); } 402 403 bool is_cpu_register() const { validate_type(); return check_value_mask(kind_mask, cpu_register); } 404 bool is_virtual_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register | virtual_mask); } 405 bool is_fixed_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register); } 406 bool is_single_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | single_size); } 407 bool is_double_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | double_size); } 408 409 bool is_fpu_register() const { validate_type(); return check_value_mask(kind_mask, fpu_register); } 410 bool is_virtual_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register | virtual_mask); } 411 bool is_fixed_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register); } 412 bool is_single_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | single_size); } 413 bool is_double_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | double_size); } 414 415 bool is_xmm_register() const { validate_type(); return check_value_mask(kind_mask | is_xmm_mask, fpu_register | is_xmm_mask); } 416 bool is_single_xmm() const { validate_type(); return check_value_mask(kind_mask | size_mask | is_xmm_mask, fpu_register | single_size | is_xmm_mask); } 417 bool is_double_xmm() const { validate_type(); return check_value_mask(kind_mask | size_mask | is_xmm_mask, fpu_register | double_size | is_xmm_mask); } 418 419 // fast accessor functions for special bits that do not work for pointers 420 // (in this functions, the check for is_pointer() is omitted) 421 bool is_single_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, single_size); } 422 bool is_double_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, double_size); } 423 bool is_virtual_register() const { assert(is_register(), "type check"); return check_value_mask(virtual_mask, virtual_mask); } 424 bool is_oop_register() const { assert(is_register() || is_stack(), "type check"); return type_field_valid() == object_type; } 425 BasicType type_register() const { assert(is_register() || is_stack(), "type check"); return as_BasicType(type_field_valid()); } 426 427 bool is_last_use() const { assert(is_register(), "only works for registers"); return (value() & last_use_mask) != 0; } 428 bool is_fpu_stack_offset() const { assert(is_register(), "only works for registers"); return (value() & is_fpu_stack_offset_mask) != 0; } 429 LIR_Opr make_last_use() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | last_use_mask); } 430 LIR_Opr make_fpu_stack_offset() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | is_fpu_stack_offset_mask); } 431 432 433 int single_stack_ix() const { assert(is_single_stack() && !is_virtual(), "type check"); return (int)data(); } 434 int double_stack_ix() const { assert(is_double_stack() && !is_virtual(), "type check"); return (int)data(); } 435 RegNr cpu_regnr() const { assert(is_single_cpu() && !is_virtual(), "type check"); return (RegNr)data(); } 436 RegNr cpu_regnrLo() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); } 437 RegNr cpu_regnrHi() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); } 438 RegNr fpu_regnr() const { assert(is_single_fpu() && !is_virtual(), "type check"); return (RegNr)data(); } 439 RegNr fpu_regnrLo() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); } 440 RegNr fpu_regnrHi() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); } 441 RegNr xmm_regnr() const { assert(is_single_xmm() && !is_virtual(), "type check"); return (RegNr)data(); } 442 RegNr xmm_regnrLo() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); } 443 RegNr xmm_regnrHi() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); } 444 int vreg_number() const { assert(is_virtual(), "type check"); return (RegNr)data(); } 445 446 LIR_OprPtr* pointer() const { assert(_value != 0 && is_pointer(), "nullness and type check"); return (LIR_OprPtr*)_value; } 447 LIR_Const* as_constant_ptr() const { return pointer()->as_constant(); } 448 LIR_Address* as_address_ptr() const { return pointer()->as_address(); } 449 450 Register as_register() const; 451 Register as_register_lo() const; 452 Register as_register_hi() const; 453 454 Register as_pointer_register() { 455 #ifdef _LP64 456 if (is_double_cpu()) { 457 assert(as_register_lo() == as_register_hi(), "should be a single register"); 458 return as_register_lo(); 459 } 460 #endif 461 return as_register(); 462 } 463 464 FloatRegister as_float_reg () const; 465 FloatRegister as_double_reg () const; 466 #ifdef X86 467 XMMRegister as_xmm_float_reg () const; 468 XMMRegister as_xmm_double_reg() const; 469 // for compatibility with RInfo 470 int fpu() const { return lo_reg_half(); } 471 #endif 472 473 jint as_jint() const { return as_constant_ptr()->as_jint(); } 474 jlong as_jlong() const { return as_constant_ptr()->as_jlong(); } 475 jfloat as_jfloat() const { return as_constant_ptr()->as_jfloat(); } 476 jdouble as_jdouble() const { return as_constant_ptr()->as_jdouble(); } 477 jobject as_jobject() const { return as_constant_ptr()->as_jobject(); } 478 479 void print() const PRODUCT_RETURN; 480 void print(outputStream* out) const PRODUCT_RETURN; 481 }; 482 483 inline LIR_Opr::OprType as_OprType(BasicType type) { 484 switch (type) { 485 case T_INT: return LIR_Opr::int_type; 486 case T_LONG: return LIR_Opr::long_type; 487 case T_FLOAT: return LIR_Opr::float_type; 488 case T_DOUBLE: return LIR_Opr::double_type; 489 case T_OBJECT: 490 case T_ARRAY: return LIR_Opr::object_type; 491 case T_ADDRESS: return LIR_Opr::address_type; 492 case T_METADATA: return LIR_Opr::metadata_type; 493 case T_ILLEGAL: // fall through 494 default: ShouldNotReachHere(); return LIR_Opr::unknown_type; 495 } 496 } 497 498 inline BasicType as_BasicType(LIR_Opr::OprType t) { 499 switch (t) { 500 case LIR_Opr::int_type: return T_INT; 501 case LIR_Opr::long_type: return T_LONG; 502 case LIR_Opr::float_type: return T_FLOAT; 503 case LIR_Opr::double_type: return T_DOUBLE; 504 case LIR_Opr::object_type: return T_OBJECT; 505 case LIR_Opr::address_type: return T_ADDRESS; 506 case LIR_Opr::metadata_type:return T_METADATA; 507 case LIR_Opr::unknown_type: // fall through 508 default: ShouldNotReachHere(); return T_ILLEGAL; 509 } 510 } 511 512 513 // LIR_Address 514 class LIR_Address: public LIR_OprPtr { 515 friend class LIR_OpVisitState; 516 517 public: 518 // NOTE: currently these must be the log2 of the scale factor (and 519 // must also be equivalent to the ScaleFactor enum in 520 // assembler_i486.hpp) 521 enum Scale { 522 times_1 = 0, 523 times_2 = 1, 524 times_4 = 2, 525 times_8 = 3 526 }; 527 528 private: 529 LIR_Opr _base; 530 LIR_Opr _index; 531 intx _disp; 532 Scale _scale; 533 BasicType _type; 534 535 public: 536 LIR_Address(LIR_Opr base, LIR_Opr index, BasicType type): 537 _base(base) 538 , _index(index) 539 , _disp(0) 540 , _scale(times_1) 541 , _type(type) { verify(); } 542 543 LIR_Address(LIR_Opr base, intx disp, BasicType type): 544 _base(base) 545 , _index(LIR_Opr::illegalOpr()) 546 , _disp(disp) 547 , _scale(times_1) 548 , _type(type) { verify(); } 549 550 LIR_Address(LIR_Opr base, BasicType type): 551 _base(base) 552 , _index(LIR_Opr::illegalOpr()) 553 , _disp(0) 554 , _scale(times_1) 555 , _type(type) { verify(); } 556 557 LIR_Address(LIR_Opr base, LIR_Opr index, intx disp, BasicType type): 558 _base(base) 559 , _index(index) 560 , _disp(disp) 561 , _scale(times_1) 562 , _type(type) { verify(); } 563 564 LIR_Address(LIR_Opr base, LIR_Opr index, Scale scale, intx disp, BasicType type): 565 _base(base) 566 , _index(index) 567 , _disp(disp) 568 , _scale(scale) 569 , _type(type) { verify(); } 570 571 LIR_Opr base() const { return _base; } 572 LIR_Opr index() const { return _index; } 573 Scale scale() const { return _scale; } 574 intx disp() const { return _disp; } 575 576 bool equals(LIR_Address* other) const { return base() == other->base() && index() == other->index() && disp() == other->disp() && scale() == other->scale(); } 577 578 virtual LIR_Address* as_address() { return this; } 579 virtual BasicType type() const { return _type; } 580 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN; 581 582 void verify() const PRODUCT_RETURN; 583 584 static Scale scale(BasicType type); 585 }; 586 587 588 // operand factory 589 class LIR_OprFact: public AllStatic { 590 public: 591 592 static LIR_Opr illegalOpr; 593 static LIR_Opr nullOpr; 594 595 static LIR_Opr single_cpu(int reg) { 596 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) | 597 LIR_Opr::int_type | 598 LIR_Opr::cpu_register | 599 LIR_Opr::single_size); 600 } 601 static LIR_Opr single_cpu_oop(int reg) { 602 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) | 603 LIR_Opr::object_type | 604 LIR_Opr::cpu_register | 605 LIR_Opr::single_size); 606 } 607 static LIR_Opr single_cpu_address(int reg) { 608 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) | 609 LIR_Opr::address_type | 610 LIR_Opr::cpu_register | 611 LIR_Opr::single_size); 612 } 613 static LIR_Opr single_cpu_metadata(int reg) { 614 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) | 615 LIR_Opr::metadata_type | 616 LIR_Opr::cpu_register | 617 LIR_Opr::single_size); 618 } 619 static LIR_Opr double_cpu(int reg1, int reg2) { 620 LP64_ONLY(assert(reg1 == reg2, "must be identical")); 621 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) | 622 (reg2 << LIR_Opr::reg2_shift) | 623 LIR_Opr::long_type | 624 LIR_Opr::cpu_register | 625 LIR_Opr::double_size); 626 } 627 628 static LIR_Opr single_fpu(int reg) { 629 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) | 630 LIR_Opr::float_type | 631 LIR_Opr::fpu_register | 632 LIR_Opr::single_size); 633 } 634 635 // Platform dependent. 636 static LIR_Opr double_fpu(int reg1, int reg2 = -1 /*fnoreg*/); 637 638 #ifdef ARM32 639 static LIR_Opr single_softfp(int reg) { 640 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) | 641 LIR_Opr::float_type | 642 LIR_Opr::cpu_register | 643 LIR_Opr::single_size); 644 } 645 static LIR_Opr double_softfp(int reg1, int reg2) { 646 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) | 647 (reg2 << LIR_Opr::reg2_shift) | 648 LIR_Opr::double_type | 649 LIR_Opr::cpu_register | 650 LIR_Opr::double_size); 651 } 652 #endif // ARM32 653 654 #if defined(X86) 655 static LIR_Opr single_xmm(int reg) { 656 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) | 657 LIR_Opr::float_type | 658 LIR_Opr::fpu_register | 659 LIR_Opr::single_size | 660 LIR_Opr::is_xmm_mask); 661 } 662 static LIR_Opr double_xmm(int reg) { 663 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) | 664 (reg << LIR_Opr::reg2_shift) | 665 LIR_Opr::double_type | 666 LIR_Opr::fpu_register | 667 LIR_Opr::double_size | 668 LIR_Opr::is_xmm_mask); 669 } 670 #endif // X86 671 672 static LIR_Opr virtual_register(int index, BasicType type) { 673 if (index > LIR_Opr::vreg_max) { 674 // Running out of virtual registers. Caller should bailout. 675 return illegalOpr; 676 } 677 678 LIR_Opr res; 679 switch (type) { 680 case T_OBJECT: // fall through 681 case T_ARRAY: 682 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 683 LIR_Opr::object_type | 684 LIR_Opr::cpu_register | 685 LIR_Opr::single_size | 686 LIR_Opr::virtual_mask); 687 break; 688 689 case T_METADATA: 690 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 691 LIR_Opr::metadata_type| 692 LIR_Opr::cpu_register | 693 LIR_Opr::single_size | 694 LIR_Opr::virtual_mask); 695 break; 696 697 case T_INT: 698 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 699 LIR_Opr::int_type | 700 LIR_Opr::cpu_register | 701 LIR_Opr::single_size | 702 LIR_Opr::virtual_mask); 703 break; 704 705 case T_ADDRESS: 706 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 707 LIR_Opr::address_type | 708 LIR_Opr::cpu_register | 709 LIR_Opr::single_size | 710 LIR_Opr::virtual_mask); 711 break; 712 713 case T_LONG: 714 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 715 LIR_Opr::long_type | 716 LIR_Opr::cpu_register | 717 LIR_Opr::double_size | 718 LIR_Opr::virtual_mask); 719 break; 720 721 #ifdef __SOFTFP__ 722 case T_FLOAT: 723 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 724 LIR_Opr::float_type | 725 LIR_Opr::cpu_register | 726 LIR_Opr::single_size | 727 LIR_Opr::virtual_mask); 728 break; 729 case T_DOUBLE: 730 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 731 LIR_Opr::double_type | 732 LIR_Opr::cpu_register | 733 LIR_Opr::double_size | 734 LIR_Opr::virtual_mask); 735 break; 736 #else // __SOFTFP__ 737 case T_FLOAT: 738 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 739 LIR_Opr::float_type | 740 LIR_Opr::fpu_register | 741 LIR_Opr::single_size | 742 LIR_Opr::virtual_mask); 743 break; 744 745 case 746 T_DOUBLE: res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 747 LIR_Opr::double_type | 748 LIR_Opr::fpu_register | 749 LIR_Opr::double_size | 750 LIR_Opr::virtual_mask); 751 break; 752 #endif // __SOFTFP__ 753 default: ShouldNotReachHere(); res = illegalOpr; 754 } 755 756 #ifdef ASSERT 757 res->validate_type(); 758 assert(res->vreg_number() == index, "conversion check"); 759 assert(index >= LIR_Opr::vreg_base, "must start at vreg_base"); 760 761 // old-style calculation; check if old and new method are equal 762 LIR_Opr::OprType t = as_OprType(type); 763 #ifdef __SOFTFP__ 764 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 765 t | 766 LIR_Opr::cpu_register | 767 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask); 768 #else // __SOFTFP__ 769 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | t | 770 ((type == T_FLOAT || type == T_DOUBLE) ? LIR_Opr::fpu_register : LIR_Opr::cpu_register) | 771 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask); 772 assert(res == old_res, "old and new method not equal"); 773 #endif // __SOFTFP__ 774 #endif // ASSERT 775 776 return res; 777 } 778 779 // 'index' is computed by FrameMap::local_stack_pos(index); do not use other parameters as 780 // the index is platform independent; a double stack using indices 2 and 3 has always 781 // index 2. 782 static LIR_Opr stack(int index, BasicType type) { 783 LIR_Opr res; 784 switch (type) { 785 case T_OBJECT: // fall through 786 case T_ARRAY: 787 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 788 LIR_Opr::object_type | 789 LIR_Opr::stack_value | 790 LIR_Opr::single_size); 791 break; 792 793 case T_METADATA: 794 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 795 LIR_Opr::metadata_type | 796 LIR_Opr::stack_value | 797 LIR_Opr::single_size); 798 break; 799 case T_INT: 800 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 801 LIR_Opr::int_type | 802 LIR_Opr::stack_value | 803 LIR_Opr::single_size); 804 break; 805 806 case T_ADDRESS: 807 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 808 LIR_Opr::address_type | 809 LIR_Opr::stack_value | 810 LIR_Opr::single_size); 811 break; 812 813 case T_LONG: 814 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 815 LIR_Opr::long_type | 816 LIR_Opr::stack_value | 817 LIR_Opr::double_size); 818 break; 819 820 case T_FLOAT: 821 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 822 LIR_Opr::float_type | 823 LIR_Opr::stack_value | 824 LIR_Opr::single_size); 825 break; 826 case T_DOUBLE: 827 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 828 LIR_Opr::double_type | 829 LIR_Opr::stack_value | 830 LIR_Opr::double_size); 831 break; 832 833 default: ShouldNotReachHere(); res = illegalOpr; 834 } 835 836 #ifdef ASSERT 837 assert(index >= 0, "index must be positive"); 838 assert(index == (int)res->data(), "conversion check"); 839 840 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | 841 LIR_Opr::stack_value | 842 as_OprType(type) | 843 LIR_Opr::size_for(type)); 844 assert(res == old_res, "old and new method not equal"); 845 #endif 846 847 return res; 848 } 849 850 static LIR_Opr intConst(jint i) { return (LIR_Opr)(new LIR_Const(i)); } 851 static LIR_Opr longConst(jlong l) { return (LIR_Opr)(new LIR_Const(l)); } 852 static LIR_Opr floatConst(jfloat f) { return (LIR_Opr)(new LIR_Const(f)); } 853 static LIR_Opr doubleConst(jdouble d) { return (LIR_Opr)(new LIR_Const(d)); } 854 static LIR_Opr oopConst(jobject o) { return (LIR_Opr)(new LIR_Const(o)); } 855 static LIR_Opr address(LIR_Address* a) { return (LIR_Opr)a; } 856 static LIR_Opr intptrConst(void* p) { return (LIR_Opr)(new LIR_Const(p)); } 857 static LIR_Opr intptrConst(intptr_t v) { return (LIR_Opr)(new LIR_Const((void*)v)); } 858 static LIR_Opr illegal() { return (LIR_Opr)-1; } 859 static LIR_Opr addressConst(jint i) { return (LIR_Opr)(new LIR_Const(i, true)); } 860 static LIR_Opr metadataConst(Metadata* m) { return (LIR_Opr)(new LIR_Const(m)); } 861 862 static LIR_Opr value_type(ValueType* type); 863 }; 864 865 866 //------------------------------------------------------------------------------- 867 // LIR Instructions 868 //------------------------------------------------------------------------------- 869 // 870 // Note: 871 // - every instruction has a result operand 872 // - every instruction has an CodeEmitInfo operand (can be revisited later) 873 // - every instruction has a LIR_OpCode operand 874 // - LIR_OpN, means an instruction that has N input operands 875 // 876 // class hierarchy: 877 // 878 class LIR_Op; 879 class LIR_Op0; 880 class LIR_OpLabel; 881 class LIR_Op1; 882 class LIR_OpBranch; 883 class LIR_OpConvert; 884 class LIR_OpAllocObj; 885 class LIR_OpReturn; 886 class LIR_OpRoundFP; 887 class LIR_Op2; 888 class LIR_OpDelay; 889 class LIR_Op3; 890 class LIR_OpAllocArray; 891 class LIR_Op4; 892 class LIR_OpCall; 893 class LIR_OpJavaCall; 894 class LIR_OpRTCall; 895 class LIR_OpArrayCopy; 896 class LIR_OpUpdateCRC32; 897 class LIR_OpLock; 898 class LIR_OpTypeCheck; 899 class LIR_OpFlattenedArrayCheck; 900 class LIR_OpNullFreeArrayCheck; 901 class LIR_OpSubstitutabilityCheck; 902 class LIR_OpCompareAndSwap; 903 class LIR_OpLoadKlass; 904 class LIR_OpProfileCall; 905 class LIR_OpProfileType; 906 class LIR_OpProfileInlineType; 907 #ifdef ASSERT 908 class LIR_OpAssert; 909 #endif 910 911 // LIR operation codes 912 enum LIR_Code { 913 lir_none 914 , begin_op0 915 , lir_label 916 , lir_nop 917 , lir_std_entry 918 , lir_osr_entry 919 , lir_fpop_raw 920 , lir_breakpoint 921 , lir_rtcall 922 , lir_membar 923 , lir_membar_acquire 924 , lir_membar_release 925 , lir_membar_loadload 926 , lir_membar_storestore 927 , lir_membar_loadstore 928 , lir_membar_storeload 929 , lir_get_thread 930 , lir_on_spin_wait 931 , lir_check_orig_pc 932 , end_op0 933 , begin_op1 934 , lir_fxch 935 , lir_fld 936 , lir_push 937 , lir_pop 938 , lir_null_check 939 , lir_return 940 , lir_leal 941 , lir_move 942 , lir_convert 943 , lir_alloc_object 944 , lir_monaddr 945 , lir_roundfp 946 , lir_safepoint 947 , lir_unwind 948 , lir_load_klass 949 , end_op1 950 , begin_op2 951 , lir_branch 952 , lir_cond_float_branch 953 , lir_cmp 954 , lir_cmp_l2i 955 , lir_ucmp_fd2i 956 , lir_cmp_fd2i 957 , lir_add 958 , lir_sub 959 , lir_mul 960 , lir_div 961 , lir_rem 962 , lir_sqrt 963 , lir_abs 964 , lir_neg 965 , lir_tan 966 , lir_f2hf 967 , lir_hf2f 968 , lir_log10 969 , lir_logic_and 970 , lir_logic_or 971 , lir_logic_xor 972 , lir_shl 973 , lir_shr 974 , lir_ushr 975 , lir_alloc_array 976 , lir_throw 977 , lir_xadd 978 , lir_xchg 979 , end_op2 980 , begin_op3 981 , lir_idiv 982 , lir_irem 983 , lir_fmad 984 , lir_fmaf 985 , end_op3 986 , begin_op4 987 , lir_cmove 988 , end_op4 989 , begin_opJavaCall 990 , lir_static_call 991 , lir_optvirtual_call 992 , lir_icvirtual_call 993 , lir_dynamic_call 994 , end_opJavaCall 995 , begin_opArrayCopy 996 , lir_arraycopy 997 , end_opArrayCopy 998 , begin_opUpdateCRC32 999 , lir_updatecrc32 1000 , end_opUpdateCRC32 1001 , begin_opLock 1002 , lir_lock 1003 , lir_unlock 1004 , end_opLock 1005 , begin_delay_slot 1006 , lir_delay_slot 1007 , end_delay_slot 1008 , begin_opTypeCheck 1009 , lir_instanceof 1010 , lir_checkcast 1011 , lir_store_check 1012 , end_opTypeCheck 1013 , begin_opFlattenedArrayCheck 1014 , lir_flat_array_check 1015 , end_opFlattenedArrayCheck 1016 , begin_opNullFreeArrayCheck 1017 , lir_null_free_array_check 1018 , end_opNullFreeArrayCheck 1019 , begin_opSubstitutabilityCheck 1020 , lir_substitutability_check 1021 , end_opSubstitutabilityCheck 1022 , begin_opCompareAndSwap 1023 , lir_cas_long 1024 , lir_cas_obj 1025 , lir_cas_int 1026 , end_opCompareAndSwap 1027 , begin_opMDOProfile 1028 , lir_profile_call 1029 , lir_profile_type 1030 , lir_profile_inline_type 1031 , end_opMDOProfile 1032 , begin_opAssert 1033 , lir_assert 1034 , end_opAssert 1035 #ifdef INCLUDE_ZGC 1036 , begin_opXLoadBarrierTest 1037 , lir_xloadbarrier_test 1038 , end_opXLoadBarrierTest 1039 #endif 1040 }; 1041 1042 1043 enum LIR_Condition { 1044 lir_cond_equal 1045 , lir_cond_notEqual 1046 , lir_cond_less 1047 , lir_cond_lessEqual 1048 , lir_cond_greaterEqual 1049 , lir_cond_greater 1050 , lir_cond_belowEqual 1051 , lir_cond_aboveEqual 1052 , lir_cond_always 1053 , lir_cond_unknown = -1 1054 }; 1055 1056 1057 enum LIR_PatchCode { 1058 lir_patch_none, 1059 lir_patch_low, 1060 lir_patch_high, 1061 lir_patch_normal 1062 }; 1063 1064 1065 enum LIR_MoveKind { 1066 lir_move_normal, 1067 lir_move_volatile, 1068 lir_move_wide, 1069 lir_move_max_flag 1070 }; 1071 1072 1073 // -------------------------------------------------- 1074 // LIR_Op 1075 // -------------------------------------------------- 1076 class LIR_Op: public CompilationResourceObj { 1077 friend class LIR_OpVisitState; 1078 1079 #ifdef ASSERT 1080 private: 1081 const char * _file; 1082 int _line; 1083 #endif 1084 1085 protected: 1086 LIR_Opr _result; 1087 unsigned short _code; 1088 unsigned short _flags; 1089 CodeEmitInfo* _info; 1090 int _id; // value id for register allocation 1091 int _fpu_pop_count; 1092 Instruction* _source; // for debugging 1093 1094 static void print_condition(outputStream* out, LIR_Condition cond) PRODUCT_RETURN; 1095 1096 protected: 1097 static bool is_in_range(LIR_Code test, LIR_Code start, LIR_Code end) { return start < test && test < end; } 1098 1099 public: 1100 LIR_Op() 1101 : 1102 #ifdef ASSERT 1103 _file(nullptr) 1104 , _line(0), 1105 #endif 1106 _result(LIR_OprFact::illegalOpr) 1107 , _code(lir_none) 1108 , _flags(0) 1109 , _info(nullptr) 1110 , _id(-1) 1111 , _fpu_pop_count(0) 1112 , _source(nullptr) {} 1113 1114 LIR_Op(LIR_Code code, LIR_Opr result, CodeEmitInfo* info) 1115 : 1116 #ifdef ASSERT 1117 _file(nullptr) 1118 , _line(0), 1119 #endif 1120 _result(result) 1121 , _code(code) 1122 , _flags(0) 1123 , _info(info) 1124 , _id(-1) 1125 , _fpu_pop_count(0) 1126 , _source(nullptr) {} 1127 1128 CodeEmitInfo* info() const { return _info; } 1129 LIR_Code code() const { return (LIR_Code)_code; } 1130 LIR_Opr result_opr() const { return _result; } 1131 void set_result_opr(LIR_Opr opr) { _result = opr; } 1132 1133 #ifdef ASSERT 1134 void set_file_and_line(const char * file, int line) { 1135 _file = file; 1136 _line = line; 1137 } 1138 #endif 1139 1140 virtual const char * name() const PRODUCT_RETURN0; 1141 virtual void visit(LIR_OpVisitState* state); 1142 1143 int id() const { return _id; } 1144 void set_id(int id) { _id = id; } 1145 1146 // FPU stack simulation helpers -- only used on Intel 1147 void set_fpu_pop_count(int count) { assert(count >= 0 && count <= 1, "currently only 0 and 1 are valid"); _fpu_pop_count = count; } 1148 int fpu_pop_count() const { return _fpu_pop_count; } 1149 bool pop_fpu_stack() { return _fpu_pop_count > 0; } 1150 1151 Instruction* source() const { return _source; } 1152 void set_source(Instruction* ins) { _source = ins; } 1153 1154 virtual void emit_code(LIR_Assembler* masm) = 0; 1155 virtual void print_instr(outputStream* out) const = 0; 1156 virtual void print_on(outputStream* st) const PRODUCT_RETURN; 1157 1158 virtual bool is_patching() { return false; } 1159 virtual LIR_OpCall* as_OpCall() { return nullptr; } 1160 virtual LIR_OpJavaCall* as_OpJavaCall() { return nullptr; } 1161 virtual LIR_OpLabel* as_OpLabel() { return nullptr; } 1162 virtual LIR_OpDelay* as_OpDelay() { return nullptr; } 1163 virtual LIR_OpLock* as_OpLock() { return nullptr; } 1164 virtual LIR_OpAllocArray* as_OpAllocArray() { return nullptr; } 1165 virtual LIR_OpAllocObj* as_OpAllocObj() { return nullptr; } 1166 virtual LIR_OpRoundFP* as_OpRoundFP() { return nullptr; } 1167 virtual LIR_OpBranch* as_OpBranch() { return nullptr; } 1168 virtual LIR_OpReturn* as_OpReturn() { return nullptr; } 1169 virtual LIR_OpRTCall* as_OpRTCall() { return nullptr; } 1170 virtual LIR_OpConvert* as_OpConvert() { return nullptr; } 1171 virtual LIR_Op0* as_Op0() { return nullptr; } 1172 virtual LIR_Op1* as_Op1() { return nullptr; } 1173 virtual LIR_Op2* as_Op2() { return nullptr; } 1174 virtual LIR_Op3* as_Op3() { return nullptr; } 1175 virtual LIR_Op4* as_Op4() { return nullptr; } 1176 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return nullptr; } 1177 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return nullptr; } 1178 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return nullptr; } 1179 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return nullptr; } 1180 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return nullptr; } 1181 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return nullptr; } 1182 virtual LIR_OpCompareAndSwap* as_OpCompareAndSwap() { return nullptr; } 1183 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return nullptr; } 1184 virtual LIR_OpProfileCall* as_OpProfileCall() { return nullptr; } 1185 virtual LIR_OpProfileType* as_OpProfileType() { return nullptr; } 1186 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return nullptr; } 1187 #ifdef ASSERT 1188 virtual LIR_OpAssert* as_OpAssert() { return nullptr; } 1189 #endif 1190 1191 virtual void verify() const {} 1192 }; 1193 1194 // for calls 1195 class LIR_OpCall: public LIR_Op { 1196 friend class LIR_OpVisitState; 1197 1198 protected: 1199 address _addr; 1200 LIR_OprList* _arguments; 1201 protected: 1202 LIR_OpCall(LIR_Code code, address addr, LIR_Opr result, 1203 LIR_OprList* arguments, CodeEmitInfo* info = nullptr) 1204 : LIR_Op(code, result, info) 1205 , _addr(addr) 1206 , _arguments(arguments) {} 1207 1208 public: 1209 address addr() const { return _addr; } 1210 const LIR_OprList* arguments() const { return _arguments; } 1211 virtual LIR_OpCall* as_OpCall() { return this; } 1212 }; 1213 1214 1215 // -------------------------------------------------- 1216 // LIR_OpJavaCall 1217 // -------------------------------------------------- 1218 class LIR_OpJavaCall: public LIR_OpCall { 1219 friend class LIR_OpVisitState; 1220 1221 private: 1222 ciMethod* _method; 1223 LIR_Opr _receiver; 1224 LIR_Opr _method_handle_invoke_SP_save_opr; // Used in LIR_OpVisitState::visit to store the reference to FrameMap::method_handle_invoke_SP_save_opr. 1225 1226 public: 1227 LIR_OpJavaCall(LIR_Code code, ciMethod* method, 1228 LIR_Opr receiver, LIR_Opr result, 1229 address addr, LIR_OprList* arguments, 1230 CodeEmitInfo* info) 1231 : LIR_OpCall(code, addr, result, arguments, info) 1232 , _method(method) 1233 , _receiver(receiver) 1234 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr) 1235 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); } 1236 1237 LIR_OpJavaCall(LIR_Code code, ciMethod* method, 1238 LIR_Opr receiver, LIR_Opr result, intptr_t vtable_offset, 1239 LIR_OprList* arguments, CodeEmitInfo* info) 1240 : LIR_OpCall(code, (address)vtable_offset, result, arguments, info) 1241 , _method(method) 1242 , _receiver(receiver) 1243 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr) 1244 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); } 1245 1246 LIR_Opr receiver() const { return _receiver; } 1247 ciMethod* method() const { return _method; } 1248 1249 // JSR 292 support. 1250 bool is_invokedynamic() const { return code() == lir_dynamic_call; } 1251 bool is_method_handle_invoke() const { 1252 return method()->is_compiled_lambda_form() || // Java-generated lambda form 1253 method()->is_method_handle_intrinsic(); // JVM-generated MH intrinsic 1254 } 1255 1256 virtual void emit_code(LIR_Assembler* masm); 1257 virtual LIR_OpJavaCall* as_OpJavaCall() { return this; } 1258 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1259 1260 bool maybe_return_as_fields(ciInlineKlass** vk = nullptr) const; 1261 }; 1262 1263 // -------------------------------------------------- 1264 // LIR_OpLabel 1265 // -------------------------------------------------- 1266 // Location where a branch can continue 1267 class LIR_OpLabel: public LIR_Op { 1268 friend class LIR_OpVisitState; 1269 1270 private: 1271 Label* _label; 1272 public: 1273 LIR_OpLabel(Label* lbl) 1274 : LIR_Op(lir_label, LIR_OprFact::illegalOpr, nullptr) 1275 , _label(lbl) {} 1276 Label* label() const { return _label; } 1277 1278 virtual void emit_code(LIR_Assembler* masm); 1279 virtual LIR_OpLabel* as_OpLabel() { return this; } 1280 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1281 }; 1282 1283 // LIR_OpArrayCopy 1284 class LIR_OpArrayCopy: public LIR_Op { 1285 friend class LIR_OpVisitState; 1286 1287 private: 1288 ArrayCopyStub* _stub; 1289 LIR_Opr _src; 1290 LIR_Opr _src_pos; 1291 LIR_Opr _dst; 1292 LIR_Opr _dst_pos; 1293 LIR_Opr _length; 1294 LIR_Opr _tmp; 1295 ciArrayKlass* _expected_type; 1296 int _flags; 1297 1298 public: 1299 enum Flags { 1300 src_null_check = 1 << 0, 1301 dst_null_check = 1 << 1, 1302 src_pos_positive_check = 1 << 2, 1303 dst_pos_positive_check = 1 << 3, 1304 length_positive_check = 1 << 4, 1305 src_range_check = 1 << 5, 1306 dst_range_check = 1 << 6, 1307 type_check = 1 << 7, 1308 overlapping = 1 << 8, 1309 unaligned = 1 << 9, 1310 src_objarray = 1 << 10, 1311 dst_objarray = 1 << 11, 1312 always_slow_path = 1 << 12, 1313 src_inlinetype_check = 1 << 13, 1314 dst_inlinetype_check = 1 << 14, 1315 all_flags = (1 << 15) - 1 1316 }; 1317 1318 LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp, 1319 ciArrayKlass* expected_type, int flags, CodeEmitInfo* info); 1320 1321 LIR_Opr src() const { return _src; } 1322 LIR_Opr src_pos() const { return _src_pos; } 1323 LIR_Opr dst() const { return _dst; } 1324 LIR_Opr dst_pos() const { return _dst_pos; } 1325 LIR_Opr length() const { return _length; } 1326 LIR_Opr tmp() const { return _tmp; } 1327 int flags() const { return _flags; } 1328 ciArrayKlass* expected_type() const { return _expected_type; } 1329 ArrayCopyStub* stub() const { return _stub; } 1330 1331 virtual void emit_code(LIR_Assembler* masm); 1332 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return this; } 1333 void print_instr(outputStream* out) const PRODUCT_RETURN; 1334 }; 1335 1336 // LIR_OpUpdateCRC32 1337 class LIR_OpUpdateCRC32: public LIR_Op { 1338 friend class LIR_OpVisitState; 1339 1340 private: 1341 LIR_Opr _crc; 1342 LIR_Opr _val; 1343 1344 public: 1345 1346 LIR_OpUpdateCRC32(LIR_Opr crc, LIR_Opr val, LIR_Opr res); 1347 1348 LIR_Opr crc() const { return _crc; } 1349 LIR_Opr val() const { return _val; } 1350 1351 virtual void emit_code(LIR_Assembler* masm); 1352 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return this; } 1353 void print_instr(outputStream* out) const PRODUCT_RETURN; 1354 }; 1355 1356 // -------------------------------------------------- 1357 // LIR_Op0 1358 // -------------------------------------------------- 1359 class LIR_Op0: public LIR_Op { 1360 friend class LIR_OpVisitState; 1361 1362 public: 1363 LIR_Op0(LIR_Code code) 1364 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr) { assert(is_in_range(code, begin_op0, end_op0), "code check"); } 1365 LIR_Op0(LIR_Code code, LIR_Opr result, CodeEmitInfo* info = nullptr) 1366 : LIR_Op(code, result, info) { assert(is_in_range(code, begin_op0, end_op0), "code check"); } 1367 1368 virtual void emit_code(LIR_Assembler* masm); 1369 virtual LIR_Op0* as_Op0() { return this; } 1370 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1371 }; 1372 1373 1374 // -------------------------------------------------- 1375 // LIR_Op1 1376 // -------------------------------------------------- 1377 1378 class LIR_Op1: public LIR_Op { 1379 friend class LIR_OpVisitState; 1380 1381 protected: 1382 LIR_Opr _opr; // input operand 1383 BasicType _type; // Operand types 1384 LIR_PatchCode _patch; // only required with patchin (NEEDS_CLEANUP: do we want a special instruction for patching?) 1385 1386 static void print_patch_code(outputStream* out, LIR_PatchCode code); 1387 1388 void set_kind(LIR_MoveKind kind) { 1389 assert(code() == lir_move, "must be"); 1390 _flags = kind; 1391 } 1392 1393 public: 1394 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result = LIR_OprFact::illegalOpr, BasicType type = T_ILLEGAL, LIR_PatchCode patch = lir_patch_none, CodeEmitInfo* info = nullptr) 1395 : LIR_Op(code, result, info) 1396 , _opr(opr) 1397 , _type(type) 1398 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); } 1399 1400 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, BasicType type, LIR_PatchCode patch, CodeEmitInfo* info, LIR_MoveKind kind) 1401 : LIR_Op(code, result, info) 1402 , _opr(opr) 1403 , _type(type) 1404 , _patch(patch) { 1405 assert(code == lir_move, "must be"); 1406 set_kind(kind); 1407 } 1408 1409 LIR_Op1(LIR_Code code, LIR_Opr opr, CodeEmitInfo* info) 1410 : LIR_Op(code, LIR_OprFact::illegalOpr, info) 1411 , _opr(opr) 1412 , _type(T_ILLEGAL) 1413 , _patch(lir_patch_none) { assert(is_in_range(code, begin_op1, end_op1), "code check"); } 1414 1415 LIR_Opr in_opr() const { return _opr; } 1416 LIR_PatchCode patch_code() const { return _patch; } 1417 BasicType type() const { return _type; } 1418 1419 LIR_MoveKind move_kind() const { 1420 assert(code() == lir_move, "must be"); 1421 return (LIR_MoveKind)_flags; 1422 } 1423 1424 virtual bool is_patching() { return _patch != lir_patch_none; } 1425 virtual void emit_code(LIR_Assembler* masm); 1426 virtual LIR_Op1* as_Op1() { return this; } 1427 virtual const char * name() const PRODUCT_RETURN0; 1428 1429 void set_in_opr(LIR_Opr opr) { _opr = opr; } 1430 1431 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1432 virtual void verify() const; 1433 }; 1434 1435 1436 // for runtime calls 1437 class LIR_OpRTCall: public LIR_OpCall { 1438 friend class LIR_OpVisitState; 1439 1440 private: 1441 LIR_Opr _tmp; 1442 public: 1443 LIR_OpRTCall(address addr, LIR_Opr tmp, 1444 LIR_Opr result, LIR_OprList* arguments, CodeEmitInfo* info = nullptr) 1445 : LIR_OpCall(lir_rtcall, addr, result, arguments, info) 1446 , _tmp(tmp) {} 1447 1448 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1449 virtual void emit_code(LIR_Assembler* masm); 1450 virtual LIR_OpRTCall* as_OpRTCall() { return this; } 1451 1452 LIR_Opr tmp() const { return _tmp; } 1453 1454 virtual void verify() const; 1455 }; 1456 1457 1458 1459 class LIR_OpReturn: public LIR_Op1 { 1460 friend class LIR_OpVisitState; 1461 1462 private: 1463 C1SafepointPollStub* _stub; 1464 1465 public: 1466 LIR_OpReturn(LIR_Opr opr); 1467 1468 C1SafepointPollStub* stub() const { return _stub; } 1469 virtual LIR_OpReturn* as_OpReturn() { return this; } 1470 }; 1471 1472 class ConversionStub; 1473 1474 class LIR_OpConvert: public LIR_Op1 { 1475 friend class LIR_OpVisitState; 1476 1477 private: 1478 Bytecodes::Code _bytecode; 1479 ConversionStub* _stub; 1480 1481 public: 1482 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub) 1483 : LIR_Op1(lir_convert, opr, result) 1484 , _bytecode(code) 1485 , _stub(stub) {} 1486 1487 Bytecodes::Code bytecode() const { return _bytecode; } 1488 ConversionStub* stub() const { return _stub; } 1489 1490 virtual void emit_code(LIR_Assembler* masm); 1491 virtual LIR_OpConvert* as_OpConvert() { return this; } 1492 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1493 1494 static void print_bytecode(outputStream* out, Bytecodes::Code code) PRODUCT_RETURN; 1495 }; 1496 1497 1498 // LIR_OpAllocObj 1499 class LIR_OpAllocObj : public LIR_Op1 { 1500 friend class LIR_OpVisitState; 1501 1502 private: 1503 LIR_Opr _tmp1; 1504 LIR_Opr _tmp2; 1505 LIR_Opr _tmp3; 1506 LIR_Opr _tmp4; 1507 int _hdr_size; 1508 int _obj_size; 1509 CodeStub* _stub; 1510 bool _init_check; 1511 1512 public: 1513 LIR_OpAllocObj(LIR_Opr klass, LIR_Opr result, 1514 LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4, 1515 int hdr_size, int obj_size, bool init_check, CodeStub* stub) 1516 : LIR_Op1(lir_alloc_object, klass, result) 1517 , _tmp1(t1) 1518 , _tmp2(t2) 1519 , _tmp3(t3) 1520 , _tmp4(t4) 1521 , _hdr_size(hdr_size) 1522 , _obj_size(obj_size) 1523 , _stub(stub) 1524 , _init_check(init_check) { } 1525 1526 LIR_Opr klass() const { return in_opr(); } 1527 LIR_Opr obj() const { return result_opr(); } 1528 LIR_Opr tmp1() const { return _tmp1; } 1529 LIR_Opr tmp2() const { return _tmp2; } 1530 LIR_Opr tmp3() const { return _tmp3; } 1531 LIR_Opr tmp4() const { return _tmp4; } 1532 int header_size() const { return _hdr_size; } 1533 int object_size() const { return _obj_size; } 1534 bool init_check() const { return _init_check; } 1535 CodeStub* stub() const { return _stub; } 1536 1537 virtual void emit_code(LIR_Assembler* masm); 1538 virtual LIR_OpAllocObj * as_OpAllocObj () { return this; } 1539 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1540 }; 1541 1542 1543 // LIR_OpRoundFP 1544 class LIR_OpRoundFP : public LIR_Op1 { 1545 friend class LIR_OpVisitState; 1546 1547 private: 1548 LIR_Opr _tmp; 1549 1550 public: 1551 LIR_OpRoundFP(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result) 1552 : LIR_Op1(lir_roundfp, reg, result) 1553 , _tmp(stack_loc_temp) {} 1554 1555 LIR_Opr tmp() const { return _tmp; } 1556 virtual LIR_OpRoundFP* as_OpRoundFP() { return this; } 1557 void print_instr(outputStream* out) const PRODUCT_RETURN; 1558 }; 1559 1560 // LIR_OpTypeCheck 1561 class LIR_OpTypeCheck: public LIR_Op { 1562 friend class LIR_OpVisitState; 1563 1564 private: 1565 LIR_Opr _object; 1566 LIR_Opr _array; 1567 ciKlass* _klass; 1568 LIR_Opr _tmp1; 1569 LIR_Opr _tmp2; 1570 LIR_Opr _tmp3; 1571 CodeEmitInfo* _info_for_patch; 1572 CodeEmitInfo* _info_for_exception; 1573 CodeStub* _stub; 1574 ciMethod* _profiled_method; 1575 int _profiled_bci; 1576 bool _should_profile; 1577 bool _fast_check; 1578 bool _need_null_check; 1579 1580 public: 1581 LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass, 1582 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check, 1583 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub, bool need_null_check = true); 1584 LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array, 1585 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception); 1586 1587 LIR_Opr object() const { return _object; } 1588 LIR_Opr array() const { assert(code() == lir_store_check, "not valid"); return _array; } 1589 LIR_Opr tmp1() const { return _tmp1; } 1590 LIR_Opr tmp2() const { return _tmp2; } 1591 LIR_Opr tmp3() const { return _tmp3; } 1592 ciKlass* klass() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _klass; } 1593 bool fast_check() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _fast_check; } 1594 CodeEmitInfo* info_for_patch() const { return _info_for_patch; } 1595 CodeEmitInfo* info_for_exception() const { return _info_for_exception; } 1596 CodeStub* stub() const { return _stub; } 1597 1598 // MethodData* profiling 1599 void set_profiled_method(ciMethod *method) { _profiled_method = method; } 1600 void set_profiled_bci(int bci) { _profiled_bci = bci; } 1601 void set_should_profile(bool b) { _should_profile = b; } 1602 ciMethod* profiled_method() const { return _profiled_method; } 1603 int profiled_bci() const { return _profiled_bci; } 1604 bool should_profile() const { return _should_profile; } 1605 bool need_null_check() const { return _need_null_check; } 1606 virtual bool is_patching() { return _info_for_patch != nullptr; } 1607 virtual void emit_code(LIR_Assembler* masm); 1608 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return this; } 1609 void print_instr(outputStream* out) const PRODUCT_RETURN; 1610 }; 1611 1612 // LIR_OpFlattenedArrayCheck 1613 class LIR_OpFlattenedArrayCheck: public LIR_Op { 1614 friend class LIR_OpVisitState; 1615 1616 private: 1617 LIR_Opr _array; 1618 LIR_Opr _value; 1619 LIR_Opr _tmp; 1620 CodeStub* _stub; 1621 public: 1622 LIR_OpFlattenedArrayCheck(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub); 1623 LIR_Opr array() const { return _array; } 1624 LIR_Opr value() const { return _value; } 1625 LIR_Opr tmp() const { return _tmp; } 1626 CodeStub* stub() const { return _stub; } 1627 1628 virtual void emit_code(LIR_Assembler* masm); 1629 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return this; } 1630 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1631 }; 1632 1633 // LIR_OpNullFreeArrayCheck 1634 class LIR_OpNullFreeArrayCheck: public LIR_Op { 1635 friend class LIR_OpVisitState; 1636 1637 private: 1638 LIR_Opr _array; 1639 LIR_Opr _tmp; 1640 public: 1641 LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp); 1642 LIR_Opr array() const { return _array; } 1643 LIR_Opr tmp() const { return _tmp; } 1644 1645 virtual void emit_code(LIR_Assembler* masm); 1646 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return this; } 1647 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1648 }; 1649 1650 class LIR_OpSubstitutabilityCheck: public LIR_Op { 1651 friend class LIR_OpVisitState; 1652 1653 private: 1654 LIR_Opr _left; 1655 LIR_Opr _right; 1656 LIR_Opr _equal_result; 1657 LIR_Opr _not_equal_result; 1658 LIR_Opr _tmp1; 1659 LIR_Opr _tmp2; 1660 ciKlass* _left_klass; 1661 ciKlass* _right_klass; 1662 LIR_Opr _left_klass_op; 1663 LIR_Opr _right_klass_op; 1664 CodeStub* _stub; 1665 public: 1666 LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result, 1667 LIR_Opr tmp1, LIR_Opr tmp2, 1668 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op, 1669 CodeEmitInfo* info, CodeStub* stub); 1670 1671 LIR_Opr left() const { return _left; } 1672 LIR_Opr right() const { return _right; } 1673 LIR_Opr equal_result() const { return _equal_result; } 1674 LIR_Opr not_equal_result() const { return _not_equal_result; } 1675 LIR_Opr tmp1() const { return _tmp1; } 1676 LIR_Opr tmp2() const { return _tmp2; } 1677 ciKlass* left_klass() const { return _left_klass; } 1678 ciKlass* right_klass() const { return _right_klass; } 1679 LIR_Opr left_klass_op() const { return _left_klass_op; } 1680 LIR_Opr right_klass_op() const { return _right_klass_op; } 1681 CodeStub* stub() const { return _stub; } 1682 1683 virtual void emit_code(LIR_Assembler* masm); 1684 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return this; } 1685 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1686 }; 1687 1688 // LIR_Op2 1689 class LIR_Op2: public LIR_Op { 1690 friend class LIR_OpVisitState; 1691 1692 int _fpu_stack_size; // for sin/cos implementation on Intel 1693 1694 protected: 1695 LIR_Opr _opr1; 1696 LIR_Opr _opr2; 1697 LIR_Opr _tmp1; 1698 LIR_Opr _tmp2; 1699 LIR_Opr _tmp3; 1700 LIR_Opr _tmp4; 1701 LIR_Opr _tmp5; 1702 LIR_Condition _condition; 1703 BasicType _type; 1704 1705 void verify() const; 1706 1707 public: 1708 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL) 1709 : LIR_Op(code, LIR_OprFact::illegalOpr, info) 1710 , _fpu_stack_size(0) 1711 , _opr1(opr1) 1712 , _opr2(opr2) 1713 , _tmp1(LIR_OprFact::illegalOpr) 1714 , _tmp2(LIR_OprFact::illegalOpr) 1715 , _tmp3(LIR_OprFact::illegalOpr) 1716 , _tmp4(LIR_OprFact::illegalOpr) 1717 , _tmp5(LIR_OprFact::illegalOpr) 1718 , _condition(condition) 1719 , _type(type) { 1720 assert(code == lir_cmp || code == lir_branch || code == lir_cond_float_branch || code == lir_assert, "code check"); 1721 } 1722 1723 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type) 1724 : LIR_Op(code, result, nullptr) 1725 , _fpu_stack_size(0) 1726 , _opr1(opr1) 1727 , _opr2(opr2) 1728 , _tmp1(LIR_OprFact::illegalOpr) 1729 , _tmp2(LIR_OprFact::illegalOpr) 1730 , _tmp3(LIR_OprFact::illegalOpr) 1731 , _tmp4(LIR_OprFact::illegalOpr) 1732 , _tmp5(LIR_OprFact::illegalOpr) 1733 , _condition(condition) 1734 , _type(type) { 1735 assert(code == lir_cmove, "code check"); 1736 assert(type != T_ILLEGAL, "cmove should have type"); 1737 } 1738 1739 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result = LIR_OprFact::illegalOpr, 1740 CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL) 1741 : LIR_Op(code, result, info) 1742 , _fpu_stack_size(0) 1743 , _opr1(opr1) 1744 , _opr2(opr2) 1745 , _tmp1(LIR_OprFact::illegalOpr) 1746 , _tmp2(LIR_OprFact::illegalOpr) 1747 , _tmp3(LIR_OprFact::illegalOpr) 1748 , _tmp4(LIR_OprFact::illegalOpr) 1749 , _tmp5(LIR_OprFact::illegalOpr) 1750 , _condition(lir_cond_unknown) 1751 , _type(type) { 1752 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check"); 1753 } 1754 1755 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, LIR_Opr tmp1, LIR_Opr tmp2 = LIR_OprFact::illegalOpr, 1756 LIR_Opr tmp3 = LIR_OprFact::illegalOpr, LIR_Opr tmp4 = LIR_OprFact::illegalOpr, LIR_Opr tmp5 = LIR_OprFact::illegalOpr) 1757 : LIR_Op(code, result, nullptr) 1758 , _fpu_stack_size(0) 1759 , _opr1(opr1) 1760 , _opr2(opr2) 1761 , _tmp1(tmp1) 1762 , _tmp2(tmp2) 1763 , _tmp3(tmp3) 1764 , _tmp4(tmp4) 1765 , _tmp5(tmp5) 1766 , _condition(lir_cond_unknown) 1767 , _type(T_ILLEGAL) { 1768 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check"); 1769 } 1770 1771 LIR_Opr in_opr1() const { return _opr1; } 1772 LIR_Opr in_opr2() const { return _opr2; } 1773 BasicType type() const { return _type; } 1774 LIR_Opr tmp1_opr() const { return _tmp1; } 1775 LIR_Opr tmp2_opr() const { return _tmp2; } 1776 LIR_Opr tmp3_opr() const { return _tmp3; } 1777 LIR_Opr tmp4_opr() const { return _tmp4; } 1778 LIR_Opr tmp5_opr() const { return _tmp5; } 1779 LIR_Condition condition() const { 1780 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch || code() == lir_assert, "only valid for branch and assert"); return _condition; 1781 } 1782 void set_condition(LIR_Condition condition) { 1783 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch, "only valid for branch"); _condition = condition; 1784 } 1785 1786 void set_fpu_stack_size(int size) { _fpu_stack_size = size; } 1787 int fpu_stack_size() const { return _fpu_stack_size; } 1788 1789 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; } 1790 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; } 1791 1792 virtual void emit_code(LIR_Assembler* masm); 1793 virtual LIR_Op2* as_Op2() { return this; } 1794 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1795 }; 1796 1797 class LIR_OpBranch: public LIR_Op2 { 1798 friend class LIR_OpVisitState; 1799 1800 private: 1801 Label* _label; 1802 BlockBegin* _block; // if this is a branch to a block, this is the block 1803 BlockBegin* _ublock; // if this is a float-branch, this is the unordered block 1804 CodeStub* _stub; // if this is a branch to a stub, this is the stub 1805 1806 public: 1807 LIR_OpBranch(LIR_Condition cond, Label* lbl) 1808 : LIR_Op2(lir_branch, cond, LIR_OprFact::illegalOpr, LIR_OprFact::illegalOpr, (CodeEmitInfo*) nullptr) 1809 , _label(lbl) 1810 , _block(nullptr) 1811 , _ublock(nullptr) 1812 , _stub(nullptr) { } 1813 1814 LIR_OpBranch(LIR_Condition cond, BlockBegin* block); 1815 LIR_OpBranch(LIR_Condition cond, CodeStub* stub); 1816 1817 // for unordered comparisons 1818 LIR_OpBranch(LIR_Condition cond, BlockBegin* block, BlockBegin* ublock); 1819 1820 LIR_Condition cond() const { 1821 return condition(); 1822 } 1823 1824 void set_cond(LIR_Condition cond) { 1825 set_condition(cond); 1826 } 1827 1828 Label* label() const { return _label; } 1829 BlockBegin* block() const { return _block; } 1830 BlockBegin* ublock() const { return _ublock; } 1831 CodeStub* stub() const { return _stub; } 1832 1833 void change_block(BlockBegin* b); 1834 void change_ublock(BlockBegin* b); 1835 void negate_cond(); 1836 1837 virtual void emit_code(LIR_Assembler* masm); 1838 virtual LIR_OpBranch* as_OpBranch() { return this; } 1839 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1840 }; 1841 1842 class LIR_OpAllocArray : public LIR_Op { 1843 friend class LIR_OpVisitState; 1844 1845 private: 1846 LIR_Opr _klass; 1847 LIR_Opr _len; 1848 LIR_Opr _tmp1; 1849 LIR_Opr _tmp2; 1850 LIR_Opr _tmp3; 1851 LIR_Opr _tmp4; 1852 CodeStub* _stub; 1853 BasicType _type; 1854 bool _zero_array; 1855 bool _is_null_free; 1856 1857 public: 1858 LIR_OpAllocArray(LIR_Opr klass, LIR_Opr len, LIR_Opr result, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4, BasicType type, CodeStub* stub, bool zero_array, bool is_null_free) 1859 : LIR_Op(lir_alloc_array, result, nullptr) 1860 , _klass(klass) 1861 , _len(len) 1862 , _tmp1(t1) 1863 , _tmp2(t2) 1864 , _tmp3(t3) 1865 , _tmp4(t4) 1866 , _stub(stub) 1867 , _type(type) 1868 , _zero_array(zero_array) 1869 , _is_null_free(is_null_free) {} 1870 1871 LIR_Opr klass() const { return _klass; } 1872 LIR_Opr len() const { return _len; } 1873 LIR_Opr obj() const { return result_opr(); } 1874 LIR_Opr tmp1() const { return _tmp1; } 1875 LIR_Opr tmp2() const { return _tmp2; } 1876 LIR_Opr tmp3() const { return _tmp3; } 1877 LIR_Opr tmp4() const { return _tmp4; } 1878 BasicType type() const { return _type; } 1879 CodeStub* stub() const { return _stub; } 1880 bool zero_array() const { return _zero_array; } 1881 bool is_null_free() const { return _is_null_free;} 1882 1883 virtual void emit_code(LIR_Assembler* masm); 1884 virtual LIR_OpAllocArray * as_OpAllocArray () { return this; } 1885 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1886 }; 1887 1888 1889 class LIR_Op3: public LIR_Op { 1890 friend class LIR_OpVisitState; 1891 1892 private: 1893 LIR_Opr _opr1; 1894 LIR_Opr _opr2; 1895 LIR_Opr _opr3; 1896 public: 1897 LIR_Op3(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr result, CodeEmitInfo* info = nullptr) 1898 : LIR_Op(code, result, info) 1899 , _opr1(opr1) 1900 , _opr2(opr2) 1901 , _opr3(opr3) { assert(is_in_range(code, begin_op3, end_op3), "code check"); } 1902 LIR_Opr in_opr1() const { return _opr1; } 1903 LIR_Opr in_opr2() const { return _opr2; } 1904 LIR_Opr in_opr3() const { return _opr3; } 1905 1906 virtual void emit_code(LIR_Assembler* masm); 1907 virtual LIR_Op3* as_Op3() { return this; } 1908 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1909 }; 1910 1911 class LIR_Op4: public LIR_Op { 1912 friend class LIR_OpVisitState; 1913 protected: 1914 LIR_Opr _opr1; 1915 LIR_Opr _opr2; 1916 LIR_Opr _opr3; 1917 LIR_Opr _opr4; 1918 LIR_Opr _tmp1; 1919 LIR_Opr _tmp2; 1920 LIR_Opr _tmp3; 1921 LIR_Opr _tmp4; 1922 LIR_Opr _tmp5; 1923 LIR_Condition _condition; 1924 BasicType _type; 1925 1926 public: 1927 LIR_Op4(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr opr4, 1928 LIR_Opr result, BasicType type) 1929 : LIR_Op(code, result, nullptr) 1930 , _opr1(opr1) 1931 , _opr2(opr2) 1932 , _opr3(opr3) 1933 , _opr4(opr4) 1934 , _tmp1(LIR_OprFact::illegalOpr) 1935 , _tmp2(LIR_OprFact::illegalOpr) 1936 , _tmp3(LIR_OprFact::illegalOpr) 1937 , _tmp4(LIR_OprFact::illegalOpr) 1938 , _tmp5(LIR_OprFact::illegalOpr) 1939 , _condition(condition) 1940 , _type(type) { 1941 assert(code == lir_cmove, "code check"); 1942 assert(type != T_ILLEGAL, "cmove should have type"); 1943 } 1944 1945 LIR_Opr in_opr1() const { return _opr1; } 1946 LIR_Opr in_opr2() const { return _opr2; } 1947 LIR_Opr in_opr3() const { return _opr3; } 1948 LIR_Opr in_opr4() const { return _opr4; } 1949 BasicType type() const { return _type; } 1950 LIR_Opr tmp1_opr() const { return _tmp1; } 1951 LIR_Opr tmp2_opr() const { return _tmp2; } 1952 LIR_Opr tmp3_opr() const { return _tmp3; } 1953 LIR_Opr tmp4_opr() const { return _tmp4; } 1954 LIR_Opr tmp5_opr() const { return _tmp5; } 1955 1956 LIR_Condition condition() const { return _condition; } 1957 void set_condition(LIR_Condition condition) { _condition = condition; } 1958 1959 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; } 1960 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; } 1961 void set_in_opr3(LIR_Opr opr) { _opr3 = opr; } 1962 void set_in_opr4(LIR_Opr opr) { _opr4 = opr; } 1963 virtual void emit_code(LIR_Assembler* masm); 1964 virtual LIR_Op4* as_Op4() { return this; } 1965 1966 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 1967 }; 1968 1969 //-------------------------------- 1970 class LabelObj: public CompilationResourceObj { 1971 private: 1972 Label _label; 1973 public: 1974 LabelObj() {} 1975 Label* label() { return &_label; } 1976 }; 1977 1978 1979 class LIR_OpLock: public LIR_Op { 1980 friend class LIR_OpVisitState; 1981 1982 private: 1983 LIR_Opr _hdr; 1984 LIR_Opr _obj; 1985 LIR_Opr _lock; 1986 LIR_Opr _scratch; 1987 CodeStub* _stub; 1988 CodeStub* _throw_ie_stub; 1989 public: 1990 LIR_OpLock(LIR_Code code, LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_ie_stub=nullptr) 1991 : LIR_Op(code, LIR_OprFact::illegalOpr, info) 1992 , _hdr(hdr) 1993 , _obj(obj) 1994 , _lock(lock) 1995 , _scratch(scratch) 1996 , _stub(stub) 1997 , _throw_ie_stub(throw_ie_stub) {} 1998 1999 LIR_Opr hdr_opr() const { return _hdr; } 2000 LIR_Opr obj_opr() const { return _obj; } 2001 LIR_Opr lock_opr() const { return _lock; } 2002 LIR_Opr scratch_opr() const { return _scratch; } 2003 CodeStub* stub() const { return _stub; } 2004 CodeStub* throw_ie_stub() const { return _throw_ie_stub; } 2005 2006 virtual void emit_code(LIR_Assembler* masm); 2007 virtual LIR_OpLock* as_OpLock() { return this; } 2008 void print_instr(outputStream* out) const PRODUCT_RETURN; 2009 }; 2010 2011 class LIR_OpLoadKlass: public LIR_Op { 2012 friend class LIR_OpVisitState; 2013 2014 private: 2015 LIR_Opr _obj; 2016 public: 2017 LIR_OpLoadKlass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info) 2018 : LIR_Op(lir_load_klass, result, info) 2019 , _obj(obj) 2020 {} 2021 2022 LIR_Opr obj() const { return _obj; } 2023 2024 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return this; } 2025 virtual void emit_code(LIR_Assembler* masm); 2026 void print_instr(outputStream* out) const PRODUCT_RETURN; 2027 }; 2028 2029 class LIR_OpDelay: public LIR_Op { 2030 friend class LIR_OpVisitState; 2031 2032 private: 2033 LIR_Op* _op; 2034 2035 public: 2036 LIR_OpDelay(LIR_Op* op, CodeEmitInfo* info): 2037 LIR_Op(lir_delay_slot, LIR_OprFact::illegalOpr, info), 2038 _op(op) { 2039 assert(op->code() == lir_nop, "should be filling with nops"); 2040 } 2041 virtual void emit_code(LIR_Assembler* masm); 2042 virtual LIR_OpDelay* as_OpDelay() { return this; } 2043 void print_instr(outputStream* out) const PRODUCT_RETURN; 2044 LIR_Op* delay_op() const { return _op; } 2045 CodeEmitInfo* call_info() const { return info(); } 2046 }; 2047 2048 #ifdef ASSERT 2049 // LIR_OpAssert 2050 class LIR_OpAssert : public LIR_Op2 { 2051 friend class LIR_OpVisitState; 2052 2053 private: 2054 const char* _msg; 2055 bool _halt; 2056 2057 public: 2058 LIR_OpAssert(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, const char* msg, bool halt) 2059 : LIR_Op2(lir_assert, condition, opr1, opr2) 2060 , _msg(msg) 2061 , _halt(halt) { 2062 } 2063 2064 const char* msg() const { return _msg; } 2065 bool halt() const { return _halt; } 2066 2067 virtual void emit_code(LIR_Assembler* masm); 2068 virtual LIR_OpAssert* as_OpAssert() { return this; } 2069 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 2070 }; 2071 #endif 2072 2073 // LIR_OpCompareAndSwap 2074 class LIR_OpCompareAndSwap : public LIR_Op { 2075 friend class LIR_OpVisitState; 2076 2077 private: 2078 LIR_Opr _addr; 2079 LIR_Opr _cmp_value; 2080 LIR_Opr _new_value; 2081 LIR_Opr _tmp1; 2082 LIR_Opr _tmp2; 2083 2084 public: 2085 LIR_OpCompareAndSwap(LIR_Code code, LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, 2086 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) 2087 : LIR_Op(code, result, nullptr) // no result, no info 2088 , _addr(addr) 2089 , _cmp_value(cmp_value) 2090 , _new_value(new_value) 2091 , _tmp1(t1) 2092 , _tmp2(t2) { } 2093 2094 LIR_Opr addr() const { return _addr; } 2095 LIR_Opr cmp_value() const { return _cmp_value; } 2096 LIR_Opr new_value() const { return _new_value; } 2097 LIR_Opr tmp1() const { return _tmp1; } 2098 LIR_Opr tmp2() const { return _tmp2; } 2099 2100 virtual void emit_code(LIR_Assembler* masm); 2101 virtual LIR_OpCompareAndSwap * as_OpCompareAndSwap () { return this; } 2102 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 2103 }; 2104 2105 // LIR_OpProfileCall 2106 class LIR_OpProfileCall : public LIR_Op { 2107 friend class LIR_OpVisitState; 2108 2109 private: 2110 ciMethod* _profiled_method; 2111 int _profiled_bci; 2112 ciMethod* _profiled_callee; 2113 LIR_Opr _mdo; 2114 LIR_Opr _recv; 2115 LIR_Opr _tmp1; 2116 ciKlass* _known_holder; 2117 2118 public: 2119 // Destroys recv 2120 LIR_OpProfileCall(ciMethod* profiled_method, int profiled_bci, ciMethod* profiled_callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* known_holder) 2121 : LIR_Op(lir_profile_call, LIR_OprFact::illegalOpr, nullptr) // no result, no info 2122 , _profiled_method(profiled_method) 2123 , _profiled_bci(profiled_bci) 2124 , _profiled_callee(profiled_callee) 2125 , _mdo(mdo) 2126 , _recv(recv) 2127 , _tmp1(t1) 2128 , _known_holder(known_holder) { } 2129 2130 ciMethod* profiled_method() const { return _profiled_method; } 2131 int profiled_bci() const { return _profiled_bci; } 2132 ciMethod* profiled_callee() const { return _profiled_callee; } 2133 LIR_Opr mdo() const { return _mdo; } 2134 LIR_Opr recv() const { return _recv; } 2135 LIR_Opr tmp1() const { return _tmp1; } 2136 ciKlass* known_holder() const { return _known_holder; } 2137 2138 virtual void emit_code(LIR_Assembler* masm); 2139 virtual LIR_OpProfileCall* as_OpProfileCall() { return this; } 2140 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 2141 bool should_profile_receiver_type() const { 2142 bool callee_is_static = _profiled_callee->is_loaded() && _profiled_callee->is_static(); 2143 Bytecodes::Code bc = _profiled_method->java_code_at_bci(_profiled_bci); 2144 bool call_is_virtual = (bc == Bytecodes::_invokevirtual && !_profiled_callee->can_be_statically_bound()) || bc == Bytecodes::_invokeinterface; 2145 return C1ProfileVirtualCalls && call_is_virtual && !callee_is_static; 2146 } 2147 }; 2148 2149 // LIR_OpProfileType 2150 class LIR_OpProfileType : public LIR_Op { 2151 friend class LIR_OpVisitState; 2152 2153 private: 2154 LIR_Opr _mdp; 2155 LIR_Opr _obj; 2156 LIR_Opr _tmp; 2157 ciKlass* _exact_klass; // non null if we know the klass statically (no need to load it from _obj) 2158 intptr_t _current_klass; // what the profiling currently reports 2159 bool _not_null; // true if we know statically that _obj cannot be null 2160 bool _no_conflict; // true if we're profling parameters, _exact_klass is not null and we know 2161 // _exact_klass it the only possible type for this parameter in any context. 2162 2163 public: 2164 // Destroys recv 2165 LIR_OpProfileType(LIR_Opr mdp, LIR_Opr obj, ciKlass* exact_klass, intptr_t current_klass, LIR_Opr tmp, bool not_null, bool no_conflict) 2166 : LIR_Op(lir_profile_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info 2167 , _mdp(mdp) 2168 , _obj(obj) 2169 , _tmp(tmp) 2170 , _exact_klass(exact_klass) 2171 , _current_klass(current_klass) 2172 , _not_null(not_null) 2173 , _no_conflict(no_conflict) { } 2174 2175 LIR_Opr mdp() const { return _mdp; } 2176 LIR_Opr obj() const { return _obj; } 2177 LIR_Opr tmp() const { return _tmp; } 2178 ciKlass* exact_klass() const { return _exact_klass; } 2179 intptr_t current_klass() const { return _current_klass; } 2180 bool not_null() const { return _not_null; } 2181 bool no_conflict() const { return _no_conflict; } 2182 2183 virtual void emit_code(LIR_Assembler* masm); 2184 virtual LIR_OpProfileType* as_OpProfileType() { return this; } 2185 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 2186 }; 2187 2188 // LIR_OpProfileInlineType 2189 class LIR_OpProfileInlineType : public LIR_Op { 2190 friend class LIR_OpVisitState; 2191 2192 private: 2193 LIR_Opr _mdp; 2194 LIR_Opr _obj; 2195 int _flag; 2196 LIR_Opr _tmp; 2197 bool _not_null; // true if we know statically that _obj cannot be null 2198 2199 public: 2200 // Destroys recv 2201 LIR_OpProfileInlineType(LIR_Opr mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null) 2202 : LIR_Op(lir_profile_inline_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info 2203 , _mdp(mdp) 2204 , _obj(obj) 2205 , _flag(flag) 2206 , _tmp(tmp) 2207 , _not_null(not_null) { } 2208 2209 LIR_Opr mdp() const { return _mdp; } 2210 LIR_Opr obj() const { return _obj; } 2211 int flag() const { return _flag; } 2212 LIR_Opr tmp() const { return _tmp; } 2213 bool not_null() const { return _not_null; } 2214 2215 virtual void emit_code(LIR_Assembler* masm); 2216 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return this; } 2217 virtual void print_instr(outputStream* out) const PRODUCT_RETURN; 2218 }; 2219 2220 class LIR_InsertionBuffer; 2221 2222 //--------------------------------LIR_List--------------------------------------------------- 2223 // Maintains a list of LIR instructions (one instance of LIR_List per basic block) 2224 // The LIR instructions are appended by the LIR_List class itself; 2225 // 2226 // Notes: 2227 // - all offsets are(should be) in bytes 2228 // - local positions are specified with an offset, with offset 0 being local 0 2229 2230 class LIR_List: public CompilationResourceObj { 2231 private: 2232 LIR_OpList _operations; 2233 2234 Compilation* _compilation; 2235 #ifndef PRODUCT 2236 BlockBegin* _block; 2237 #endif 2238 #ifdef ASSERT 2239 const char * _file; 2240 int _line; 2241 #endif 2242 #ifdef RISCV 2243 LIR_Opr _cmp_opr1; 2244 LIR_Opr _cmp_opr2; 2245 #endif 2246 2247 public: 2248 void append(LIR_Op* op) { 2249 if (op->source() == nullptr) 2250 op->set_source(_compilation->current_instruction()); 2251 #ifndef PRODUCT 2252 if (PrintIRWithLIR) { 2253 _compilation->maybe_print_current_instruction(); 2254 op->print(); tty->cr(); 2255 } 2256 #endif // PRODUCT 2257 2258 #ifdef RISCV 2259 set_cmp_oprs(op); 2260 // lir_cmp set cmp oprs only on riscv 2261 if (op->code() == lir_cmp) return; 2262 #endif 2263 2264 _operations.append(op); 2265 2266 #ifdef ASSERT 2267 op->verify(); 2268 op->set_file_and_line(_file, _line); 2269 _file = nullptr; 2270 _line = 0; 2271 #endif 2272 } 2273 2274 LIR_List(Compilation* compilation, BlockBegin* block = nullptr); 2275 2276 #ifdef ASSERT 2277 void set_file_and_line(const char * file, int line); 2278 #endif 2279 2280 #ifdef RISCV 2281 void set_cmp_oprs(LIR_Op* op); 2282 #endif 2283 2284 //---------- accessors --------------- 2285 LIR_OpList* instructions_list() { return &_operations; } 2286 int length() const { return _operations.length(); } 2287 LIR_Op* at(int i) const { return _operations.at(i); } 2288 2289 NOT_PRODUCT(BlockBegin* block() const { return _block; }); 2290 2291 // insert LIR_Ops in buffer to right places in LIR_List 2292 void append(LIR_InsertionBuffer* buffer); 2293 2294 //---------- mutators --------------- 2295 void insert_before(int i, LIR_List* op_list) { _operations.insert_before(i, op_list->instructions_list()); } 2296 void insert_before(int i, LIR_Op* op) { _operations.insert_before(i, op); } 2297 void remove_at(int i) { _operations.remove_at(i); } 2298 2299 //---------- printing ------------- 2300 void print_instructions() PRODUCT_RETURN; 2301 2302 2303 //---------- instructions ------------- 2304 void call_opt_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result, 2305 address dest, LIR_OprList* arguments, 2306 CodeEmitInfo* info) { 2307 append(new LIR_OpJavaCall(lir_optvirtual_call, method, receiver, result, dest, arguments, info)); 2308 } 2309 void call_static(ciMethod* method, LIR_Opr result, 2310 address dest, LIR_OprList* arguments, CodeEmitInfo* info) { 2311 append(new LIR_OpJavaCall(lir_static_call, method, LIR_OprFact::illegalOpr, result, dest, arguments, info)); 2312 } 2313 void call_icvirtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result, 2314 address dest, LIR_OprList* arguments, CodeEmitInfo* info) { 2315 append(new LIR_OpJavaCall(lir_icvirtual_call, method, receiver, result, dest, arguments, info)); 2316 } 2317 void call_dynamic(ciMethod* method, LIR_Opr receiver, LIR_Opr result, 2318 address dest, LIR_OprList* arguments, CodeEmitInfo* info) { 2319 append(new LIR_OpJavaCall(lir_dynamic_call, method, receiver, result, dest, arguments, info)); 2320 } 2321 2322 void get_thread(LIR_Opr result) { append(new LIR_Op0(lir_get_thread, result)); } 2323 void membar() { append(new LIR_Op0(lir_membar)); } 2324 void membar_acquire() { append(new LIR_Op0(lir_membar_acquire)); } 2325 void membar_release() { append(new LIR_Op0(lir_membar_release)); } 2326 void membar_loadload() { append(new LIR_Op0(lir_membar_loadload)); } 2327 void membar_storestore() { append(new LIR_Op0(lir_membar_storestore)); } 2328 void membar_loadstore() { append(new LIR_Op0(lir_membar_loadstore)); } 2329 void membar_storeload() { append(new LIR_Op0(lir_membar_storeload)); } 2330 2331 void nop() { append(new LIR_Op0(lir_nop)); } 2332 2333 void std_entry(LIR_Opr receiver) { append(new LIR_Op0(lir_std_entry, receiver)); } 2334 void osr_entry(LIR_Opr osrPointer) { append(new LIR_Op0(lir_osr_entry, osrPointer)); } 2335 2336 void on_spin_wait() { append(new LIR_Op0(lir_on_spin_wait)); } 2337 2338 void branch_destination(Label* lbl) { append(new LIR_OpLabel(lbl)); } 2339 2340 void leal(LIR_Opr from, LIR_Opr result_reg, LIR_PatchCode patch_code = lir_patch_none, CodeEmitInfo* info = nullptr) { append(new LIR_Op1(lir_leal, from, result_reg, T_ILLEGAL, patch_code, info)); } 2341 2342 // result is a stack location for old backend and vreg for UseLinearScan 2343 // stack_loc_temp is an illegal register for old backend 2344 void roundfp(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result) { append(new LIR_OpRoundFP(reg, stack_loc_temp, result)); } 2345 void move(LIR_Opr src, LIR_Opr dst, CodeEmitInfo* info = nullptr) { append(new LIR_Op1(lir_move, src, dst, dst->type(), lir_patch_none, info)); } 2346 void move(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = nullptr) { append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info)); } 2347 void move(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = nullptr) { append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info)); } 2348 void move_wide(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = nullptr) { 2349 if (UseCompressedOops) { 2350 append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info, lir_move_wide)); 2351 } else { 2352 move(src, dst, info); 2353 } 2354 } 2355 void move_wide(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = nullptr) { 2356 if (UseCompressedOops) { 2357 append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info, lir_move_wide)); 2358 } else { 2359 move(src, dst, info); 2360 } 2361 } 2362 void volatile_move(LIR_Opr src, LIR_Opr dst, BasicType type, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none) { append(new LIR_Op1(lir_move, src, dst, type, patch_code, info, lir_move_volatile)); } 2363 2364 void oop2reg (jobject o, LIR_Opr reg) { assert(reg->type() == T_OBJECT, "bad reg"); append(new LIR_Op1(lir_move, LIR_OprFact::oopConst(o), reg)); } 2365 void oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info); 2366 2367 void metadata2reg (Metadata* o, LIR_Opr reg) { assert(reg->type() == T_METADATA, "bad reg"); append(new LIR_Op1(lir_move, LIR_OprFact::metadataConst(o), reg)); } 2368 void klass2reg_patch(Metadata* o, LIR_Opr reg, CodeEmitInfo* info); 2369 2370 void safepoint(LIR_Opr tmp, CodeEmitInfo* info) { append(new LIR_Op1(lir_safepoint, tmp, info)); } 2371 void return_op(LIR_Opr result) { append(new LIR_OpReturn(result)); } 2372 2373 void convert(Bytecodes::Code code, LIR_Opr left, LIR_Opr dst, ConversionStub* stub = nullptr/*, bool is_32bit = false*/) { append(new LIR_OpConvert(code, left, dst, stub)); } 2374 2375 void logical_and (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_and, left, right, dst)); } 2376 void logical_or (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_or, left, right, dst)); } 2377 void logical_xor (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_xor, left, right, dst)); } 2378 2379 void null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null = false); 2380 void throw_exception(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) { 2381 append(new LIR_Op2(lir_throw, exceptionPC, exceptionOop, LIR_OprFact::illegalOpr, info)); 2382 } 2383 void unwind_exception(LIR_Opr exceptionOop) { 2384 append(new LIR_Op1(lir_unwind, exceptionOop)); 2385 } 2386 2387 void push(LIR_Opr opr) { append(new LIR_Op1(lir_push, opr)); } 2388 void pop(LIR_Opr reg) { append(new LIR_Op1(lir_pop, reg)); } 2389 2390 void cmp(LIR_Condition condition, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info = nullptr) { 2391 append(new LIR_Op2(lir_cmp, condition, left, right, info)); 2392 } 2393 void cmp(LIR_Condition condition, LIR_Opr left, int right, CodeEmitInfo* info = nullptr) { 2394 cmp(condition, left, LIR_OprFact::intConst(right), info); 2395 } 2396 2397 void cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info); 2398 void cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info); 2399 2400 void cmove(LIR_Condition condition, LIR_Opr src1, LIR_Opr src2, LIR_Opr dst, BasicType type, 2401 LIR_Opr cmp_opr1 = LIR_OprFact::illegalOpr, LIR_Opr cmp_opr2 = LIR_OprFact::illegalOpr) { 2402 append(new LIR_Op4(lir_cmove, condition, src1, src2, cmp_opr1, cmp_opr2, dst, type)); 2403 } 2404 2405 void cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, 2406 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr); 2407 void cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, 2408 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr); 2409 void cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, 2410 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr); 2411 2412 void abs (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_abs , from, tmp, to)); } 2413 void negate(LIR_Opr from, LIR_Opr to, LIR_Opr tmp = LIR_OprFact::illegalOpr) { append(new LIR_Op2(lir_neg, from, tmp, to)); } 2414 void sqrt(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_sqrt, from, tmp, to)); } 2415 void fmad(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmad, from, from1, from2, to)); } 2416 void fmaf(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmaf, from, from1, from2, to)); } 2417 void log10 (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_log10, from, LIR_OprFact::illegalOpr, to, tmp)); } 2418 void tan (LIR_Opr from, LIR_Opr to, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_Op2(lir_tan , from, tmp1, to, tmp2)); } 2419 void f2hf(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_f2hf, from, tmp, to)); } 2420 void hf2f(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_hf2f, from, tmp, to)); } 2421 2422 void add (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_add, left, right, res)); } 2423 void sub (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_sub, left, right, res, info)); } 2424 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_mul, left, right, res)); } 2425 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_mul, left, right, res, tmp)); } 2426 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_div, left, right, res, info)); } 2427 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_div, left, right, res, tmp)); } 2428 void rem (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_rem, left, right, res, info)); } 2429 2430 void volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none); 2431 void volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code); 2432 2433 void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none); 2434 2435 void store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none); 2436 void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none); 2437 void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none); 2438 void volatile_store_mem_reg(LIR_Opr src, LIR_Address* address, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none); 2439 void volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code); 2440 2441 void idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info); 2442 void idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info); 2443 void irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info); 2444 void irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info); 2445 2446 void allocate_object(LIR_Opr dst, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4, int header_size, int object_size, LIR_Opr klass, bool init_check, CodeStub* stub); 2447 void allocate_array(LIR_Opr dst, LIR_Opr len, LIR_Opr t1,LIR_Opr t2, LIR_Opr t3,LIR_Opr t4, BasicType type, LIR_Opr klass, CodeStub* stub, bool zero_array = true, bool is_null_free = false); 2448 2449 // jump is an unconditional branch 2450 void jump(BlockBegin* block) { 2451 append(new LIR_OpBranch(lir_cond_always, block)); 2452 } 2453 void jump(CodeStub* stub) { 2454 append(new LIR_OpBranch(lir_cond_always, stub)); 2455 } 2456 void branch(LIR_Condition cond, Label* lbl) { 2457 append(new LIR_OpBranch(cond, lbl)); 2458 } 2459 // Should not be used for fp comparisons 2460 void branch(LIR_Condition cond, BlockBegin* block) { 2461 append(new LIR_OpBranch(cond, block)); 2462 } 2463 // Should not be used for fp comparisons 2464 void branch(LIR_Condition cond, CodeStub* stub) { 2465 append(new LIR_OpBranch(cond, stub)); 2466 } 2467 // Should only be used for fp comparisons 2468 void branch(LIR_Condition cond, BlockBegin* block, BlockBegin* unordered) { 2469 append(new LIR_OpBranch(cond, block, unordered)); 2470 } 2471 2472 void shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp); 2473 void shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp); 2474 void unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp); 2475 2476 void shift_left(LIR_Opr value, int count, LIR_Opr dst) { shift_left(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); } 2477 void shift_right(LIR_Opr value, int count, LIR_Opr dst) { shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); } 2478 void unsigned_shift_right(LIR_Opr value, int count, LIR_Opr dst) { unsigned_shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); } 2479 2480 void lcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_cmp_l2i, left, right, dst)); } 2481 void fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less); 2482 2483 void call_runtime_leaf(address routine, LIR_Opr tmp, LIR_Opr result, LIR_OprList* arguments) { 2484 append(new LIR_OpRTCall(routine, tmp, result, arguments)); 2485 } 2486 2487 void call_runtime(address routine, LIR_Opr tmp, LIR_Opr result, 2488 LIR_OprList* arguments, CodeEmitInfo* info) { 2489 append(new LIR_OpRTCall(routine, tmp, result, arguments, info)); 2490 } 2491 2492 void load_stack_address_monitor(int monitor_ix, LIR_Opr dst) { append(new LIR_Op1(lir_monaddr, LIR_OprFact::intConst(monitor_ix), dst)); } 2493 void unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub); 2494 void lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_ie_stub=nullptr); 2495 2496 void breakpoint() { append(new LIR_Op0(lir_breakpoint)); } 2497 2498 void arraycopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp, ciArrayKlass* expected_type, int flags, CodeEmitInfo* info) { append(new LIR_OpArrayCopy(src, src_pos, dst, dst_pos, length, tmp, expected_type, flags, info)); } 2499 2500 void update_crc32(LIR_Opr crc, LIR_Opr val, LIR_Opr res) { append(new LIR_OpUpdateCRC32(crc, val, res)); } 2501 2502 void instanceof(LIR_Opr result, LIR_Opr object, ciKlass* klass, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check, CodeEmitInfo* info_for_patch, ciMethod* profiled_method, int profiled_bci); 2503 void store_check(LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception, ciMethod* profiled_method, int profiled_bci); 2504 void check_flat_array(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub); 2505 void check_null_free_array(LIR_Opr array, LIR_Opr tmp); 2506 void substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result, 2507 LIR_Opr tmp1, LIR_Opr tmp2, 2508 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op, 2509 CodeEmitInfo* info, CodeStub* stub); 2510 2511 void checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass, 2512 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check, 2513 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub, 2514 ciMethod* profiled_method, int profiled_bci, bool is_null_free); 2515 // MethodData* profiling 2516 void profile_call(ciMethod* method, int bci, ciMethod* callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* cha_klass) { 2517 append(new LIR_OpProfileCall(method, bci, callee, mdo, recv, t1, cha_klass)); 2518 } 2519 void profile_type(LIR_Address* mdp, LIR_Opr obj, ciKlass* exact_klass, intptr_t current_klass, LIR_Opr tmp, bool not_null, bool no_conflict) { 2520 append(new LIR_OpProfileType(LIR_OprFact::address(mdp), obj, exact_klass, current_klass, tmp, not_null, no_conflict)); 2521 } 2522 void profile_inline_type(LIR_Address* mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null) { 2523 append(new LIR_OpProfileInlineType(LIR_OprFact::address(mdp), obj, flag, tmp, not_null)); 2524 } 2525 2526 void xadd(LIR_Opr src, LIR_Opr add, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xadd, src, add, res, tmp)); } 2527 void xchg(LIR_Opr src, LIR_Opr set, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xchg, src, set, res, tmp)); } 2528 2529 void load_klass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info) { append(new LIR_OpLoadKlass(obj, result, info)); } 2530 2531 #ifdef ASSERT 2532 void lir_assert(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, const char* msg, bool halt) { append(new LIR_OpAssert(condition, opr1, opr2, msg, halt)); } 2533 #endif 2534 }; 2535 2536 void print_LIR(BlockList* blocks); 2537 2538 class LIR_InsertionBuffer : public CompilationResourceObj { 2539 private: 2540 LIR_List* _lir; // the lir list where ops of this buffer should be inserted later (null when uninitialized) 2541 2542 // list of insertion points. index and count are stored alternately: 2543 // _index_and_count[i * 2]: the index into lir list where "count" ops should be inserted 2544 // _index_and_count[i * 2 + 1]: the number of ops to be inserted at index 2545 intStack _index_and_count; 2546 2547 // the LIR_Ops to be inserted 2548 LIR_OpList _ops; 2549 2550 void append_new(int index, int count) { _index_and_count.append(index); _index_and_count.append(count); } 2551 void set_index_at(int i, int value) { _index_and_count.at_put((i << 1), value); } 2552 void set_count_at(int i, int value) { _index_and_count.at_put((i << 1) + 1, value); } 2553 2554 #ifdef ASSERT 2555 void verify(); 2556 #endif 2557 public: 2558 LIR_InsertionBuffer() : _lir(nullptr), _index_and_count(8), _ops(8) { } 2559 2560 // must be called before using the insertion buffer 2561 void init(LIR_List* lir) { assert(!initialized(), "already initialized"); _lir = lir; _index_and_count.clear(); _ops.clear(); } 2562 bool initialized() const { return _lir != nullptr; } 2563 // called automatically when the buffer is appended to the LIR_List 2564 void finish() { _lir = nullptr; } 2565 2566 // accessors 2567 LIR_List* lir_list() const { return _lir; } 2568 int number_of_insertion_points() const { return _index_and_count.length() >> 1; } 2569 int index_at(int i) const { return _index_and_count.at((i << 1)); } 2570 int count_at(int i) const { return _index_and_count.at((i << 1) + 1); } 2571 2572 int number_of_ops() const { return _ops.length(); } 2573 LIR_Op* op_at(int i) const { return _ops.at(i); } 2574 2575 // append an instruction to the buffer 2576 void append(int index, LIR_Op* op); 2577 2578 // instruction 2579 void move(int index, LIR_Opr src, LIR_Opr dst, CodeEmitInfo* info = nullptr) { append(index, new LIR_Op1(lir_move, src, dst, dst->type(), lir_patch_none, info)); } 2580 }; 2581 2582 2583 // 2584 // LIR_OpVisitState is used for manipulating LIR_Ops in an abstract way. 2585 // Calling a LIR_Op's visit function with a LIR_OpVisitState causes 2586 // information about the input, output and temporaries used by the 2587 // op to be recorded. It also records whether the op has call semantics 2588 // and also records all the CodeEmitInfos used by this op. 2589 // 2590 2591 2592 class LIR_OpVisitState: public StackObj { 2593 public: 2594 typedef enum { inputMode, firstMode = inputMode, tempMode, outputMode, numModes, invalidMode = -1 } OprMode; 2595 2596 enum { 2597 maxNumberOfOperands = 21, 2598 maxNumberOfInfos = 4 2599 }; 2600 2601 private: 2602 LIR_Op* _op; 2603 2604 // optimization: the operands and infos are not stored in a variable-length 2605 // list, but in a fixed-size array to save time of size checks and resizing 2606 int _oprs_len[numModes]; 2607 LIR_Opr* _oprs_new[numModes][maxNumberOfOperands]; 2608 int _info_len; 2609 CodeEmitInfo* _info_new[maxNumberOfInfos]; 2610 2611 bool _has_call; 2612 bool _has_slow_case; 2613 2614 2615 // only include register operands 2616 // addresses are decomposed to the base and index registers 2617 // constants and stack operands are ignored 2618 void append(LIR_Opr& opr, OprMode mode) { 2619 assert(opr->is_valid(), "should not call this otherwise"); 2620 assert(mode >= 0 && mode < numModes, "bad mode"); 2621 2622 if (opr->is_register()) { 2623 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow"); 2624 _oprs_new[mode][_oprs_len[mode]++] = &opr; 2625 2626 } else if (opr->is_pointer()) { 2627 LIR_Address* address = opr->as_address_ptr(); 2628 if (address != nullptr) { 2629 // special handling for addresses: add base and index register of the address 2630 // both are always input operands or temp if we want to extend 2631 // their liveness! 2632 if (mode == outputMode) { 2633 mode = inputMode; 2634 } 2635 assert (mode == inputMode || mode == tempMode, "input or temp only for addresses"); 2636 if (address->_base->is_valid()) { 2637 assert(address->_base->is_register(), "must be"); 2638 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow"); 2639 _oprs_new[mode][_oprs_len[mode]++] = &address->_base; 2640 } 2641 if (address->_index->is_valid()) { 2642 assert(address->_index->is_register(), "must be"); 2643 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow"); 2644 _oprs_new[mode][_oprs_len[mode]++] = &address->_index; 2645 } 2646 2647 } else { 2648 assert(opr->is_constant(), "constant operands are not processed"); 2649 } 2650 } else { 2651 assert(opr->is_stack(), "stack operands are not processed"); 2652 } 2653 } 2654 2655 void append(CodeEmitInfo* info) { 2656 assert(info != nullptr, "should not call this otherwise"); 2657 assert(_info_len < maxNumberOfInfos, "array overflow"); 2658 _info_new[_info_len++] = info; 2659 } 2660 2661 public: 2662 LIR_OpVisitState() { reset(); } 2663 2664 LIR_Op* op() const { return _op; } 2665 void set_op(LIR_Op* op) { reset(); _op = op; } 2666 2667 bool has_call() const { return _has_call; } 2668 bool has_slow_case() const { return _has_slow_case; } 2669 2670 void reset() { 2671 _op = nullptr; 2672 _has_call = false; 2673 _has_slow_case = false; 2674 2675 _oprs_len[inputMode] = 0; 2676 _oprs_len[tempMode] = 0; 2677 _oprs_len[outputMode] = 0; 2678 _info_len = 0; 2679 } 2680 2681 2682 int opr_count(OprMode mode) const { 2683 assert(mode >= 0 && mode < numModes, "bad mode"); 2684 return _oprs_len[mode]; 2685 } 2686 2687 LIR_Opr opr_at(OprMode mode, int index) const { 2688 assert(mode >= 0 && mode < numModes, "bad mode"); 2689 assert(index >= 0 && index < _oprs_len[mode], "index out of bound"); 2690 return *_oprs_new[mode][index]; 2691 } 2692 2693 void set_opr_at(OprMode mode, int index, LIR_Opr opr) const { 2694 assert(mode >= 0 && mode < numModes, "bad mode"); 2695 assert(index >= 0 && index < _oprs_len[mode], "index out of bound"); 2696 *_oprs_new[mode][index] = opr; 2697 } 2698 2699 int info_count() const { 2700 return _info_len; 2701 } 2702 2703 CodeEmitInfo* info_at(int index) const { 2704 assert(index < _info_len, "index out of bounds"); 2705 return _info_new[index]; 2706 } 2707 2708 XHandlers* all_xhandler(); 2709 2710 // collects all register operands of the instruction 2711 void visit(LIR_Op* op); 2712 2713 #ifdef ASSERT 2714 // check that an operation has no operands 2715 bool no_operands(LIR_Op* op); 2716 #endif 2717 2718 // LIR_Op visitor functions use these to fill in the state 2719 void do_input(LIR_Opr& opr) { append(opr, LIR_OpVisitState::inputMode); } 2720 void do_output(LIR_Opr& opr) { append(opr, LIR_OpVisitState::outputMode); } 2721 void do_temp(LIR_Opr& opr) { append(opr, LIR_OpVisitState::tempMode); } 2722 void do_info(CodeEmitInfo* info) { append(info); } 2723 2724 void do_stub(CodeStub* stub); 2725 void do_call() { _has_call = true; } 2726 void do_slow_case() { _has_slow_case = true; } 2727 void do_slow_case(CodeEmitInfo* info) { 2728 _has_slow_case = true; 2729 append(info); 2730 } 2731 }; 2732 2733 2734 inline LIR_Opr LIR_Opr::illegalOpr() { return LIR_OprFact::illegalOpr; }; 2735 2736 inline LIR_Opr LIR_Opr::nullOpr() { return LIR_OprFact::nullOpr; }; 2737 2738 #endif // SHARE_C1_C1_LIR_HPP