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 #include "precompiled.hpp"
26 #include "c1/c1_CodeStubs.hpp"
27 #include "c1/c1_InstructionPrinter.hpp"
28 #include "c1/c1_LIR.hpp"
29 #include "c1/c1_LIRAssembler.hpp"
30 #include "c1/c1_ValueStack.hpp"
31 #include "ci/ciInstance.hpp"
32 #include "runtime/safepointMechanism.inline.hpp"
33 #include "runtime/sharedRuntime.hpp"
34 #include "runtime/vm_version.hpp"
35
36 Register LIR_Opr::as_register() const {
37 return FrameMap::cpu_rnr2reg(cpu_regnr());
38 }
39
40 Register LIR_Opr::as_register_lo() const {
41 return FrameMap::cpu_rnr2reg(cpu_regnrLo());
42 }
43
44 Register LIR_Opr::as_register_hi() const {
45 return FrameMap::cpu_rnr2reg(cpu_regnrHi());
46 }
47
48 LIR_Opr LIR_OprFact::illegalOpr = LIR_OprFact::illegal();
49 LIR_Opr LIR_OprFact::nullOpr = LIR_Opr();
50
270 assert(_ublock != nullptr, "must have old block");
271 _ublock = b;
272 }
273
274 void LIR_OpBranch::negate_cond() {
275 switch (cond()) {
276 case lir_cond_equal: set_cond(lir_cond_notEqual); break;
277 case lir_cond_notEqual: set_cond(lir_cond_equal); break;
278 case lir_cond_less: set_cond(lir_cond_greaterEqual); break;
279 case lir_cond_lessEqual: set_cond(lir_cond_greater); break;
280 case lir_cond_greaterEqual: set_cond(lir_cond_less); break;
281 case lir_cond_greater: set_cond(lir_cond_lessEqual); break;
282 default: ShouldNotReachHere();
283 }
284 }
285
286
287 LIR_OpTypeCheck::LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
288 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3,
289 bool fast_check, CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch,
290 CodeStub* stub)
291
292 : LIR_Op(code, result, nullptr)
293 , _object(object)
294 , _array(LIR_OprFact::illegalOpr)
295 , _klass(klass)
296 , _tmp1(tmp1)
297 , _tmp2(tmp2)
298 , _tmp3(tmp3)
299 , _info_for_patch(info_for_patch)
300 , _info_for_exception(info_for_exception)
301 , _stub(stub)
302 , _profiled_method(nullptr)
303 , _profiled_bci(-1)
304 , _should_profile(false)
305 , _fast_check(fast_check)
306 {
307 if (code == lir_checkcast) {
308 assert(info_for_exception != nullptr, "checkcast throws exceptions");
309 } else if (code == lir_instanceof) {
310 assert(info_for_exception == nullptr, "instanceof throws no exceptions");
311 } else {
312 ShouldNotReachHere();
313 }
314 }
315
316
317
318 LIR_OpTypeCheck::LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception)
319 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr)
320 , _object(object)
321 , _array(array)
322 , _klass(nullptr)
323 , _tmp1(tmp1)
324 , _tmp2(tmp2)
325 , _tmp3(tmp3)
326 , _info_for_patch(nullptr)
327 , _info_for_exception(info_for_exception)
328 , _stub(nullptr)
329 , _profiled_method(nullptr)
330 , _profiled_bci(-1)
331 , _should_profile(false)
332 , _fast_check(false)
333 {
334 if (code == lir_store_check) {
335 _stub = new ArrayStoreExceptionStub(object, info_for_exception);
336 assert(info_for_exception != nullptr, "store_check throws exceptions");
337 } else {
338 ShouldNotReachHere();
339 }
340 }
341
342
343 LIR_OpArrayCopy::LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length,
344 LIR_Opr tmp, ciArrayKlass* expected_type, int flags, CodeEmitInfo* info)
345 : LIR_Op(lir_arraycopy, LIR_OprFact::illegalOpr, info)
346 , _src(src)
347 , _src_pos(src_pos)
348 , _dst(dst)
349 , _dst_pos(dst_pos)
350 , _length(length)
351 , _tmp(tmp)
352 , _expected_type(expected_type)
353 , _flags(flags) {
354 #if defined(X86) || defined(AARCH64) || defined(S390) || defined(RISCV) || defined(PPC64)
355 if (expected_type != nullptr && flags == 0) {
356 _stub = nullptr;
357 } else {
358 _stub = new ArrayCopyStub(this);
359 }
360 #else
361 _stub = new ArrayCopyStub(this);
396 // The virtual call for each instruction type is replaced by a big
397 // switch that adds the operands for each instruction
398
399 void LIR_OpVisitState::visit(LIR_Op* op) {
400 // copy information from the LIR_Op
401 reset();
402 set_op(op);
403
404 switch (op->code()) {
405
406 // LIR_Op0
407 case lir_fpop_raw: // result and info always invalid
408 case lir_breakpoint: // result and info always invalid
409 case lir_membar: // result and info always invalid
410 case lir_membar_acquire: // result and info always invalid
411 case lir_membar_release: // result and info always invalid
412 case lir_membar_loadload: // result and info always invalid
413 case lir_membar_storestore: // result and info always invalid
414 case lir_membar_loadstore: // result and info always invalid
415 case lir_membar_storeload: // result and info always invalid
416 case lir_on_spin_wait:
417 {
418 assert(op->as_Op0() != nullptr, "must be");
419 assert(op->_info == nullptr, "info not used by this instruction");
420 assert(op->_result->is_illegal(), "not used");
421 break;
422 }
423
424 case lir_nop: // may have info, result always invalid
425 case lir_std_entry: // may have result, info always invalid
426 case lir_osr_entry: // may have result, info always invalid
427 case lir_get_thread: // may have result, info always invalid
428 {
429 assert(op->as_Op0() != nullptr, "must be");
430 if (op->_info != nullptr) do_info(op->_info);
431 if (op->_result->is_valid()) do_output(op->_result);
432 break;
433 }
434
435
792
793
794 // LIR_OpLock
795 case lir_lock:
796 case lir_unlock: {
797 assert(op->as_OpLock() != nullptr, "must be");
798 LIR_OpLock* opLock = (LIR_OpLock*)op;
799
800 if (opLock->_info) do_info(opLock->_info);
801
802 // TODO: check if these operands really have to be temp
803 // (or if input is sufficient). This may have influence on the oop map!
804 assert(opLock->_lock->is_valid(), "used"); do_temp(opLock->_lock);
805 assert(opLock->_hdr->is_valid(), "used"); do_temp(opLock->_hdr);
806 assert(opLock->_obj->is_valid(), "used"); do_temp(opLock->_obj);
807
808 if (opLock->_scratch->is_valid()) do_temp(opLock->_scratch);
809 assert(opLock->_result->is_illegal(), "unused");
810
811 do_stub(opLock->_stub);
812
813 break;
814 }
815
816
817 // LIR_OpDelay
818 case lir_delay_slot: {
819 assert(op->as_OpDelay() != nullptr, "must be");
820 LIR_OpDelay* opDelay = (LIR_OpDelay*)op;
821
822 visit(opDelay->delay_op());
823 break;
824 }
825
826 // LIR_OpTypeCheck
827 case lir_instanceof:
828 case lir_checkcast:
829 case lir_store_check: {
830 assert(op->as_OpTypeCheck() != nullptr, "must be");
831 LIR_OpTypeCheck* opTypeCheck = (LIR_OpTypeCheck*)op;
832
833 if (opTypeCheck->_info_for_exception) do_info(opTypeCheck->_info_for_exception);
834 if (opTypeCheck->_info_for_patch) do_info(opTypeCheck->_info_for_patch);
835 if (opTypeCheck->_object->is_valid()) do_input(opTypeCheck->_object);
836 if (op->code() == lir_store_check && opTypeCheck->_object->is_valid()) {
837 do_temp(opTypeCheck->_object);
838 }
839 if (opTypeCheck->_array->is_valid()) do_input(opTypeCheck->_array);
840 if (opTypeCheck->_tmp1->is_valid()) do_temp(opTypeCheck->_tmp1);
841 if (opTypeCheck->_tmp2->is_valid()) do_temp(opTypeCheck->_tmp2);
842 if (opTypeCheck->_tmp3->is_valid()) do_temp(opTypeCheck->_tmp3);
843 if (opTypeCheck->_result->is_valid()) do_output(opTypeCheck->_result);
844 if (opTypeCheck->_stub != nullptr) do_stub(opTypeCheck->_stub);
845 break;
846 }
847
848 // LIR_OpCompareAndSwap
849 case lir_cas_long:
850 case lir_cas_obj:
851 case lir_cas_int: {
852 assert(op->as_OpCompareAndSwap() != nullptr, "must be");
853 LIR_OpCompareAndSwap* opCmpAndSwap = (LIR_OpCompareAndSwap*)op;
854
855 if (opCmpAndSwap->_info) do_info(opCmpAndSwap->_info);
856 assert(opCmpAndSwap->_addr->is_valid(), "used"); do_input(opCmpAndSwap->_addr);
857 do_temp(opCmpAndSwap->_addr);
858 assert(opCmpAndSwap->_cmp_value->is_valid(), "used"); do_input(opCmpAndSwap->_cmp_value);
859 do_temp(opCmpAndSwap->_cmp_value);
860 assert(opCmpAndSwap->_new_value->is_valid(), "used"); do_input(opCmpAndSwap->_new_value);
861 do_temp(opCmpAndSwap->_new_value);
862 if (opCmpAndSwap->_tmp1->is_valid()) do_temp(opCmpAndSwap->_tmp1);
863 if (opCmpAndSwap->_tmp2->is_valid()) do_temp(opCmpAndSwap->_tmp2);
864 if (opCmpAndSwap->_result->is_valid()) do_output(opCmpAndSwap->_result);
865
866 break;
867 }
905 case lir_profile_call: {
906 assert(op->as_OpProfileCall() != nullptr, "must be");
907 LIR_OpProfileCall* opProfileCall = (LIR_OpProfileCall*)op;
908
909 if (opProfileCall->_recv->is_valid()) do_temp(opProfileCall->_recv);
910 assert(opProfileCall->_mdo->is_valid(), "used"); do_temp(opProfileCall->_mdo);
911 assert(opProfileCall->_tmp1->is_valid(), "used"); do_temp(opProfileCall->_tmp1);
912 break;
913 }
914
915 // LIR_OpProfileType:
916 case lir_profile_type: {
917 assert(op->as_OpProfileType() != nullptr, "must be");
918 LIR_OpProfileType* opProfileType = (LIR_OpProfileType*)op;
919
920 do_input(opProfileType->_mdp); do_temp(opProfileType->_mdp);
921 do_input(opProfileType->_obj);
922 do_temp(opProfileType->_tmp);
923 break;
924 }
925 default:
926 op->visit(this);
927 }
928 }
929
930 void LIR_Op::visit(LIR_OpVisitState* state) {
931 ShouldNotReachHere();
932 }
933
934 void LIR_OpVisitState::do_stub(CodeStub* stub) {
935 if (stub != nullptr) {
936 stub->visit(this);
937 }
938 }
939
940 XHandlers* LIR_OpVisitState::all_xhandler() {
941 XHandlers* result = nullptr;
942
943 int i;
944 for (i = 0; i < info_count(); i++) {
945 if (info_at(i)->exception_handlers() != nullptr) {
978 !has_slow_case();
979 }
980 #endif
981
982 // LIR_OpReturn
983 LIR_OpReturn::LIR_OpReturn(LIR_Opr opr) :
984 LIR_Op1(lir_return, opr, (CodeEmitInfo*)nullptr /* info */),
985 _stub(nullptr) {
986 if (VM_Version::supports_stack_watermark_barrier()) {
987 _stub = new C1SafepointPollStub();
988 }
989 }
990
991 //---------------------------------------------------
992
993
994 void LIR_OpJavaCall::emit_code(LIR_Assembler* masm) {
995 masm->emit_call(this);
996 }
997
998 void LIR_OpRTCall::emit_code(LIR_Assembler* masm) {
999 masm->emit_rtcall(this);
1000 }
1001
1002 void LIR_OpLabel::emit_code(LIR_Assembler* masm) {
1003 masm->emit_opLabel(this);
1004 }
1005
1006 void LIR_OpArrayCopy::emit_code(LIR_Assembler* masm) {
1007 masm->emit_arraycopy(this);
1008 ArrayCopyStub* code_stub = stub();
1009 if (code_stub != nullptr) {
1010 masm->append_code_stub(code_stub);
1011 }
1012 }
1013
1014 void LIR_OpUpdateCRC32::emit_code(LIR_Assembler* masm) {
1015 masm->emit_updatecrc32(this);
1016 }
1017
1041 masm->append_code_stub(stub());
1042 }
1043 }
1044
1045 void LIR_Op2::emit_code(LIR_Assembler* masm) {
1046 masm->emit_op2(this);
1047 }
1048
1049 void LIR_OpAllocArray::emit_code(LIR_Assembler* masm) {
1050 masm->emit_alloc_array(this);
1051 masm->append_code_stub(stub());
1052 }
1053
1054 void LIR_OpTypeCheck::emit_code(LIR_Assembler* masm) {
1055 masm->emit_opTypeCheck(this);
1056 if (stub()) {
1057 masm->append_code_stub(stub());
1058 }
1059 }
1060
1061 void LIR_OpCompareAndSwap::emit_code(LIR_Assembler* masm) {
1062 masm->emit_compare_and_swap(this);
1063 }
1064
1065 void LIR_Op3::emit_code(LIR_Assembler* masm) {
1066 masm->emit_op3(this);
1067 }
1068
1069 void LIR_Op4::emit_code(LIR_Assembler* masm) {
1070 masm->emit_op4(this);
1071 }
1072
1073 void LIR_OpLock::emit_code(LIR_Assembler* masm) {
1074 masm->emit_lock(this);
1075 if (stub()) {
1076 masm->append_code_stub(stub());
1077 }
1078 }
1079
1080 void LIR_OpLoadKlass::emit_code(LIR_Assembler* masm) {
1081 masm->emit_load_klass(this);
1082 }
1083
1084 #ifdef ASSERT
1085 void LIR_OpAssert::emit_code(LIR_Assembler* masm) {
1086 masm->emit_assert(this);
1087 }
1088 #endif
1089
1090 void LIR_OpDelay::emit_code(LIR_Assembler* masm) {
1091 masm->emit_delay(this);
1092 }
1093
1094 void LIR_OpProfileCall::emit_code(LIR_Assembler* masm) {
1095 masm->emit_profile_call(this);
1096 }
1097
1098 void LIR_OpProfileType::emit_code(LIR_Assembler* masm) {
1099 masm->emit_profile_type(this);
1100 }
1101
1102 // LIR_List
1103 LIR_List::LIR_List(Compilation* compilation, BlockBegin* block)
1104 : _operations(8)
1105 , _compilation(compilation)
1106 #ifndef PRODUCT
1107 , _block(block)
1108 #endif
1109 #ifdef ASSERT
1110 , _file(nullptr)
1111 , _line(0)
1112 #endif
1113 #ifdef RISCV
1114 , _cmp_opr1(LIR_OprFact::illegalOpr)
1115 , _cmp_opr2(LIR_OprFact::illegalOpr)
1116 #endif
1117 { }
1118
1119
1120 #ifdef ASSERT
1121 void LIR_List::set_file_and_line(const char * file, int line) {
1357 reg,
1358 LIR_OprFact::address(addr),
1359 info));
1360 }
1361
1362 void LIR_List::allocate_object(LIR_Opr dst, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1363 int header_size, int object_size, LIR_Opr klass, bool init_check, CodeStub* stub) {
1364 append(new LIR_OpAllocObj(
1365 klass,
1366 dst,
1367 t1,
1368 t2,
1369 t3,
1370 t4,
1371 header_size,
1372 object_size,
1373 init_check,
1374 stub));
1375 }
1376
1377 void LIR_List::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) {
1378 append(new LIR_OpAllocArray(
1379 klass,
1380 len,
1381 dst,
1382 t1,
1383 t2,
1384 t3,
1385 t4,
1386 type,
1387 stub,
1388 zero_array));
1389 }
1390
1391 void LIR_List::shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1392 append(new LIR_Op2(
1393 lir_shl,
1394 value,
1395 count,
1396 dst,
1397 tmp));
1398 }
1399
1400 void LIR_List::shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1401 append(new LIR_Op2(
1402 lir_shr,
1403 value,
1404 count,
1405 dst,
1406 tmp));
1407 }
1408
1409
1410 void LIR_List::unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1411 append(new LIR_Op2(
1412 lir_ushr,
1413 value,
1414 count,
1415 dst,
1416 tmp));
1417 }
1418
1419 void LIR_List::fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less) {
1420 append(new LIR_Op2(is_unordered_less ? lir_ucmp_fd2i : lir_cmp_fd2i,
1421 left,
1422 right,
1423 dst));
1424 }
1425
1426 void LIR_List::lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info) {
1427 append(new LIR_OpLock(
1428 lir_lock,
1429 hdr,
1430 obj,
1431 lock,
1432 scratch,
1433 stub,
1434 info));
1435 }
1436
1437 void LIR_List::unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub) {
1438 append(new LIR_OpLock(
1439 lir_unlock,
1440 hdr,
1441 obj,
1442 lock,
1443 scratch,
1444 stub,
1445 nullptr));
1446 }
1447
1448
1449 void check_LIR() {
1450 // cannot do the proper checking as PRODUCT and other modes return different results
1451 // guarantee(sizeof(LIR_Opr) == wordSize, "may not have a v-table");
1452 }
1453
1454
1455
1456 void LIR_List::checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
1457 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1458 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
1459 ciMethod* profiled_method, int profiled_bci) {
1460 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_checkcast, result, object, klass,
1461 tmp1, tmp2, tmp3, fast_check, info_for_exception, info_for_patch, stub);
1462 if (profiled_method != nullptr) {
1463 c->set_profiled_method(profiled_method);
1464 c->set_profiled_bci(profiled_bci);
1465 c->set_should_profile(true);
1466 }
1467 append(c);
1468 }
1469
1470 void LIR_List::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) {
1471 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_instanceof, result, object, klass, tmp1, tmp2, tmp3, fast_check, nullptr, info_for_patch, nullptr);
1472 if (profiled_method != nullptr) {
1473 c->set_profiled_method(profiled_method);
1474 c->set_profiled_bci(profiled_bci);
1475 c->set_should_profile(true);
1476 }
1477 append(c);
1478 }
1479
1480
1481 void LIR_List::store_check(LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3,
1482 CodeEmitInfo* info_for_exception, ciMethod* profiled_method, int profiled_bci) {
1483 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_store_check, object, array, tmp1, tmp2, tmp3, info_for_exception);
1484 if (profiled_method != nullptr) {
1485 c->set_profiled_method(profiled_method);
1486 c->set_profiled_bci(profiled_bci);
1487 c->set_should_profile(true);
1488 }
1489 append(c);
1490 }
1491
1492 void LIR_List::null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null) {
1493 if (deoptimize_on_null) {
1494 // Emit an explicit null check and deoptimize if opr is null
1495 CodeStub* deopt = new DeoptimizeStub(info, Deoptimization::Reason_null_check, Deoptimization::Action_none);
1496 cmp(lir_cond_equal, opr, LIR_OprFact::oopConst(nullptr));
1497 branch(lir_cond_equal, deopt);
1498 } else {
1499 // Emit an implicit null check
1500 append(new LIR_Op1(lir_null_check, opr, info));
1501 }
1502 }
1503
1504 void LIR_List::cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1505 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1506 append(new LIR_OpCompareAndSwap(lir_cas_long, addr, cmp_value, new_value, t1, t2, result));
1507 }
1508
1509 void LIR_List::cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1510 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1511 append(new LIR_OpCompareAndSwap(lir_cas_obj, addr, cmp_value, new_value, t1, t2, result));
1512 }
1513
1514 void LIR_List::cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1515 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1516 append(new LIR_OpCompareAndSwap(lir_cas_int, addr, cmp_value, new_value, t1, t2, result));
1517 }
1518
1519
1520 #ifdef PRODUCT
1521
1522 void print_LIR(BlockList* blocks) {
1523 }
1700
1701 const char * LIR_Op::name() const {
1702 const char* s = nullptr;
1703 switch(code()) {
1704 // LIR_Op0
1705 case lir_membar: s = "membar"; break;
1706 case lir_membar_acquire: s = "membar_acquire"; break;
1707 case lir_membar_release: s = "membar_release"; break;
1708 case lir_membar_loadload: s = "membar_loadload"; break;
1709 case lir_membar_storestore: s = "membar_storestore"; break;
1710 case lir_membar_loadstore: s = "membar_loadstore"; break;
1711 case lir_membar_storeload: s = "membar_storeload"; break;
1712 case lir_label: s = "label"; break;
1713 case lir_nop: s = "nop"; break;
1714 case lir_on_spin_wait: s = "on_spin_wait"; break;
1715 case lir_std_entry: s = "std_entry"; break;
1716 case lir_osr_entry: s = "osr_entry"; break;
1717 case lir_fpop_raw: s = "fpop_raw"; break;
1718 case lir_breakpoint: s = "breakpoint"; break;
1719 case lir_get_thread: s = "get_thread"; break;
1720 // LIR_Op1
1721 case lir_fxch: s = "fxch"; break;
1722 case lir_fld: s = "fld"; break;
1723 case lir_push: s = "push"; break;
1724 case lir_pop: s = "pop"; break;
1725 case lir_null_check: s = "null_check"; break;
1726 case lir_return: s = "return"; break;
1727 case lir_safepoint: s = "safepoint"; break;
1728 case lir_leal: s = "leal"; break;
1729 case lir_branch: s = "branch"; break;
1730 case lir_cond_float_branch: s = "flt_cond_br"; break;
1731 case lir_move: s = "move"; break;
1732 case lir_roundfp: s = "roundfp"; break;
1733 case lir_rtcall: s = "rtcall"; break;
1734 case lir_throw: s = "throw"; break;
1735 case lir_unwind: s = "unwind"; break;
1736 case lir_convert: s = "convert"; break;
1737 case lir_alloc_object: s = "alloc_obj"; break;
1738 case lir_monaddr: s = "mon_addr"; break;
1739 // LIR_Op2
1768 // LIR_Op4
1769 case lir_cmove: s = "cmove"; break;
1770 // LIR_OpJavaCall
1771 case lir_static_call: s = "static"; break;
1772 case lir_optvirtual_call: s = "optvirtual"; break;
1773 case lir_icvirtual_call: s = "icvirtual"; break;
1774 case lir_dynamic_call: s = "dynamic"; break;
1775 // LIR_OpArrayCopy
1776 case lir_arraycopy: s = "arraycopy"; break;
1777 // LIR_OpUpdateCRC32
1778 case lir_updatecrc32: s = "updatecrc32"; break;
1779 // LIR_OpLock
1780 case lir_lock: s = "lock"; break;
1781 case lir_unlock: s = "unlock"; break;
1782 // LIR_OpDelay
1783 case lir_delay_slot: s = "delay"; break;
1784 // LIR_OpTypeCheck
1785 case lir_instanceof: s = "instanceof"; break;
1786 case lir_checkcast: s = "checkcast"; break;
1787 case lir_store_check: s = "store_check"; break;
1788 // LIR_OpCompareAndSwap
1789 case lir_cas_long: s = "cas_long"; break;
1790 case lir_cas_obj: s = "cas_obj"; break;
1791 case lir_cas_int: s = "cas_int"; break;
1792 // LIR_OpProfileCall
1793 case lir_profile_call: s = "profile_call"; break;
1794 // LIR_OpProfileType
1795 case lir_profile_type: s = "profile_type"; break;
1796 // LIR_OpAssert
1797 #ifdef ASSERT
1798 case lir_assert: s = "assert"; break;
1799 #endif
1800 case lir_none: ShouldNotReachHere();break;
1801 default: s = "illegal_op"; break;
1802 }
1803 return s;
1804 }
1805
1806 // LIR_OpJavaCall
1807 void LIR_OpJavaCall::print_instr(outputStream* out) const {
1808 out->print("call: ");
1809 out->print("[addr: " INTPTR_FORMAT "]", p2i(address()));
1810 if (receiver()->is_valid()) {
1811 out->print(" [recv: "); receiver()->print(out); out->print("]");
1812 }
1813 if (result_opr()->is_valid()) {
1814 out->print(" [result: "); result_opr()->print(out); out->print("]");
1815 }
2007 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
2008 }
2009
2010
2011 void LIR_OpTypeCheck::print_instr(outputStream* out) const {
2012 object()->print(out); out->print(" ");
2013 if (code() == lir_store_check) {
2014 array()->print(out); out->print(" ");
2015 }
2016 if (code() != lir_store_check) {
2017 klass()->print_name_on(out); out->print(" ");
2018 if (fast_check()) out->print("fast_check ");
2019 }
2020 tmp1()->print(out); out->print(" ");
2021 tmp2()->print(out); out->print(" ");
2022 tmp3()->print(out); out->print(" ");
2023 result_opr()->print(out); out->print(" ");
2024 if (info_for_exception() != nullptr) out->print(" [bci:%d]", info_for_exception()->stack()->bci());
2025 }
2026
2027
2028 // LIR_Op3
2029 void LIR_Op3::print_instr(outputStream* out) const {
2030 in_opr1()->print(out); out->print(" ");
2031 in_opr2()->print(out); out->print(" ");
2032 in_opr3()->print(out); out->print(" ");
2033 result_opr()->print(out);
2034 }
2035
2036 // LIR_Op4
2037 void LIR_Op4::print_instr(outputStream* out) const {
2038 print_condition(out, condition()); out->print(" ");
2039 in_opr1()->print(out); out->print(" ");
2040 in_opr2()->print(out); out->print(" ");
2041 in_opr3()->print(out); out->print(" ");
2042 in_opr4()->print(out); out->print(" ");
2043 result_opr()->print(out);
2044 }
2045
2046 void LIR_OpLock::print_instr(outputStream* out) const {
2082 mdo()->print(out); out->print(" ");
2083 recv()->print(out); out->print(" ");
2084 tmp1()->print(out); out->print(" ");
2085 }
2086
2087 // LIR_OpProfileType
2088 void LIR_OpProfileType::print_instr(outputStream* out) const {
2089 out->print("exact = ");
2090 if (exact_klass() == nullptr) {
2091 out->print("unknown");
2092 } else {
2093 exact_klass()->print_name_on(out);
2094 }
2095 out->print(" current = "); ciTypeEntries::print_ciklass(out, current_klass());
2096 out->print(" ");
2097 mdp()->print(out); out->print(" ");
2098 obj()->print(out); out->print(" ");
2099 tmp()->print(out); out->print(" ");
2100 }
2101
2102 #endif // PRODUCT
2103
2104 // Implementation of LIR_InsertionBuffer
2105
2106 void LIR_InsertionBuffer::append(int index, LIR_Op* op) {
2107 assert(_index_and_count.length() % 2 == 0, "must have a count for each index");
2108
2109 int i = number_of_insertion_points() - 1;
2110 if (i < 0 || index_at(i) < index) {
2111 append_new(index, 1);
2112 } else {
2113 assert(index_at(i) == index, "can append LIR_Ops in ascending order only");
2114 assert(count_at(i) > 0, "check");
2115 set_count_at(i, count_at(i) + 1);
2116 }
2117 _ops.push(op);
2118
2119 DEBUG_ONLY(verify());
2120 }
2121
|
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 #include "precompiled.hpp"
26 #include "c1/c1_CodeStubs.hpp"
27 #include "c1/c1_InstructionPrinter.hpp"
28 #include "c1/c1_LIR.hpp"
29 #include "c1/c1_LIRAssembler.hpp"
30 #include "c1/c1_ValueStack.hpp"
31 #include "ci/ciInlineKlass.hpp"
32 #include "ci/ciInstance.hpp"
33 #include "runtime/safepointMechanism.inline.hpp"
34 #include "runtime/sharedRuntime.hpp"
35 #include "runtime/vm_version.hpp"
36
37 Register LIR_Opr::as_register() const {
38 return FrameMap::cpu_rnr2reg(cpu_regnr());
39 }
40
41 Register LIR_Opr::as_register_lo() const {
42 return FrameMap::cpu_rnr2reg(cpu_regnrLo());
43 }
44
45 Register LIR_Opr::as_register_hi() const {
46 return FrameMap::cpu_rnr2reg(cpu_regnrHi());
47 }
48
49 LIR_Opr LIR_OprFact::illegalOpr = LIR_OprFact::illegal();
50 LIR_Opr LIR_OprFact::nullOpr = LIR_Opr();
51
271 assert(_ublock != nullptr, "must have old block");
272 _ublock = b;
273 }
274
275 void LIR_OpBranch::negate_cond() {
276 switch (cond()) {
277 case lir_cond_equal: set_cond(lir_cond_notEqual); break;
278 case lir_cond_notEqual: set_cond(lir_cond_equal); break;
279 case lir_cond_less: set_cond(lir_cond_greaterEqual); break;
280 case lir_cond_lessEqual: set_cond(lir_cond_greater); break;
281 case lir_cond_greaterEqual: set_cond(lir_cond_less); break;
282 case lir_cond_greater: set_cond(lir_cond_lessEqual); break;
283 default: ShouldNotReachHere();
284 }
285 }
286
287
288 LIR_OpTypeCheck::LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
289 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3,
290 bool fast_check, CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch,
291 CodeStub* stub, bool need_null_check)
292
293 : LIR_Op(code, result, nullptr)
294 , _object(object)
295 , _array(LIR_OprFact::illegalOpr)
296 , _klass(klass)
297 , _tmp1(tmp1)
298 , _tmp2(tmp2)
299 , _tmp3(tmp3)
300 , _info_for_patch(info_for_patch)
301 , _info_for_exception(info_for_exception)
302 , _stub(stub)
303 , _profiled_method(nullptr)
304 , _profiled_bci(-1)
305 , _should_profile(false)
306 , _fast_check(fast_check)
307 , _need_null_check(need_null_check)
308 {
309 if (code == lir_checkcast) {
310 assert(info_for_exception != nullptr, "checkcast throws exceptions");
311 } else if (code == lir_instanceof) {
312 assert(info_for_exception == nullptr, "instanceof throws no exceptions");
313 } else {
314 ShouldNotReachHere();
315 }
316 }
317
318
319
320 LIR_OpTypeCheck::LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception)
321 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr)
322 , _object(object)
323 , _array(array)
324 , _klass(nullptr)
325 , _tmp1(tmp1)
326 , _tmp2(tmp2)
327 , _tmp3(tmp3)
328 , _info_for_patch(nullptr)
329 , _info_for_exception(info_for_exception)
330 , _stub(nullptr)
331 , _profiled_method(nullptr)
332 , _profiled_bci(-1)
333 , _should_profile(false)
334 , _fast_check(false)
335 , _need_null_check(true)
336 {
337 if (code == lir_store_check) {
338 _stub = new ArrayStoreExceptionStub(object, info_for_exception);
339 assert(info_for_exception != nullptr, "store_check throws exceptions");
340 } else {
341 ShouldNotReachHere();
342 }
343 }
344
345 LIR_OpFlattenedArrayCheck::LIR_OpFlattenedArrayCheck(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub)
346 : LIR_Op(lir_flat_array_check, LIR_OprFact::illegalOpr, nullptr)
347 , _array(array)
348 , _value(value)
349 , _tmp(tmp)
350 , _stub(stub) {}
351
352
353 LIR_OpNullFreeArrayCheck::LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp)
354 : LIR_Op(lir_null_free_array_check, LIR_OprFact::illegalOpr, nullptr)
355 , _array(array)
356 , _tmp(tmp) {}
357
358
359 LIR_OpSubstitutabilityCheck::LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
360 LIR_Opr tmp1, LIR_Opr tmp2,
361 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
362 CodeEmitInfo* info, CodeStub* stub)
363 : LIR_Op(lir_substitutability_check, result, info)
364 , _left(left)
365 , _right(right)
366 , _equal_result(equal_result)
367 , _not_equal_result(not_equal_result)
368 , _tmp1(tmp1)
369 , _tmp2(tmp2)
370 , _left_klass(left_klass)
371 , _right_klass(right_klass)
372 , _left_klass_op(left_klass_op)
373 , _right_klass_op(right_klass_op)
374 , _stub(stub) {}
375
376
377 LIR_OpArrayCopy::LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length,
378 LIR_Opr tmp, ciArrayKlass* expected_type, int flags, CodeEmitInfo* info)
379 : LIR_Op(lir_arraycopy, LIR_OprFact::illegalOpr, info)
380 , _src(src)
381 , _src_pos(src_pos)
382 , _dst(dst)
383 , _dst_pos(dst_pos)
384 , _length(length)
385 , _tmp(tmp)
386 , _expected_type(expected_type)
387 , _flags(flags) {
388 #if defined(X86) || defined(AARCH64) || defined(S390) || defined(RISCV) || defined(PPC64)
389 if (expected_type != nullptr && flags == 0) {
390 _stub = nullptr;
391 } else {
392 _stub = new ArrayCopyStub(this);
393 }
394 #else
395 _stub = new ArrayCopyStub(this);
430 // The virtual call for each instruction type is replaced by a big
431 // switch that adds the operands for each instruction
432
433 void LIR_OpVisitState::visit(LIR_Op* op) {
434 // copy information from the LIR_Op
435 reset();
436 set_op(op);
437
438 switch (op->code()) {
439
440 // LIR_Op0
441 case lir_fpop_raw: // result and info always invalid
442 case lir_breakpoint: // result and info always invalid
443 case lir_membar: // result and info always invalid
444 case lir_membar_acquire: // result and info always invalid
445 case lir_membar_release: // result and info always invalid
446 case lir_membar_loadload: // result and info always invalid
447 case lir_membar_storestore: // result and info always invalid
448 case lir_membar_loadstore: // result and info always invalid
449 case lir_membar_storeload: // result and info always invalid
450 case lir_check_orig_pc: // result and info always invalid
451 case lir_on_spin_wait:
452 {
453 assert(op->as_Op0() != nullptr, "must be");
454 assert(op->_info == nullptr, "info not used by this instruction");
455 assert(op->_result->is_illegal(), "not used");
456 break;
457 }
458
459 case lir_nop: // may have info, result always invalid
460 case lir_std_entry: // may have result, info always invalid
461 case lir_osr_entry: // may have result, info always invalid
462 case lir_get_thread: // may have result, info always invalid
463 {
464 assert(op->as_Op0() != nullptr, "must be");
465 if (op->_info != nullptr) do_info(op->_info);
466 if (op->_result->is_valid()) do_output(op->_result);
467 break;
468 }
469
470
827
828
829 // LIR_OpLock
830 case lir_lock:
831 case lir_unlock: {
832 assert(op->as_OpLock() != nullptr, "must be");
833 LIR_OpLock* opLock = (LIR_OpLock*)op;
834
835 if (opLock->_info) do_info(opLock->_info);
836
837 // TODO: check if these operands really have to be temp
838 // (or if input is sufficient). This may have influence on the oop map!
839 assert(opLock->_lock->is_valid(), "used"); do_temp(opLock->_lock);
840 assert(opLock->_hdr->is_valid(), "used"); do_temp(opLock->_hdr);
841 assert(opLock->_obj->is_valid(), "used"); do_temp(opLock->_obj);
842
843 if (opLock->_scratch->is_valid()) do_temp(opLock->_scratch);
844 assert(opLock->_result->is_illegal(), "unused");
845
846 do_stub(opLock->_stub);
847 do_stub(opLock->_throw_ie_stub);
848
849 break;
850 }
851
852
853 // LIR_OpDelay
854 case lir_delay_slot: {
855 assert(op->as_OpDelay() != nullptr, "must be");
856 LIR_OpDelay* opDelay = (LIR_OpDelay*)op;
857
858 visit(opDelay->delay_op());
859 break;
860 }
861
862 // LIR_OpTypeCheck
863 case lir_instanceof:
864 case lir_checkcast:
865 case lir_store_check: {
866 assert(op->as_OpTypeCheck() != nullptr, "must be");
867 LIR_OpTypeCheck* opTypeCheck = (LIR_OpTypeCheck*)op;
868
869 if (opTypeCheck->_info_for_exception) do_info(opTypeCheck->_info_for_exception);
870 if (opTypeCheck->_info_for_patch) do_info(opTypeCheck->_info_for_patch);
871 if (opTypeCheck->_object->is_valid()) do_input(opTypeCheck->_object);
872 if (op->code() == lir_store_check && opTypeCheck->_object->is_valid()) {
873 do_temp(opTypeCheck->_object);
874 }
875 if (opTypeCheck->_array->is_valid()) do_input(opTypeCheck->_array);
876 if (opTypeCheck->_tmp1->is_valid()) do_temp(opTypeCheck->_tmp1);
877 if (opTypeCheck->_tmp2->is_valid()) do_temp(opTypeCheck->_tmp2);
878 if (opTypeCheck->_tmp3->is_valid()) do_temp(opTypeCheck->_tmp3);
879 if (opTypeCheck->_result->is_valid()) do_output(opTypeCheck->_result);
880 if (opTypeCheck->_stub != nullptr) do_stub(opTypeCheck->_stub);
881 break;
882 }
883
884 // LIR_OpFlattenedArrayCheck
885 case lir_flat_array_check: {
886 assert(op->as_OpFlattenedArrayCheck() != nullptr, "must be");
887 LIR_OpFlattenedArrayCheck* opFlattenedArrayCheck = (LIR_OpFlattenedArrayCheck*)op;
888
889 if (opFlattenedArrayCheck->_array->is_valid()) do_input(opFlattenedArrayCheck->_array);
890 if (opFlattenedArrayCheck->_value->is_valid()) do_input(opFlattenedArrayCheck->_value);
891 if (opFlattenedArrayCheck->_tmp->is_valid()) do_temp(opFlattenedArrayCheck->_tmp);
892
893 do_stub(opFlattenedArrayCheck->_stub);
894
895 break;
896 }
897
898 // LIR_OpNullFreeArrayCheck
899 case lir_null_free_array_check: {
900 assert(op->as_OpNullFreeArrayCheck() != nullptr, "must be");
901 LIR_OpNullFreeArrayCheck* opNullFreeArrayCheck = (LIR_OpNullFreeArrayCheck*)op;
902
903 if (opNullFreeArrayCheck->_array->is_valid()) do_input(opNullFreeArrayCheck->_array);
904 if (opNullFreeArrayCheck->_tmp->is_valid()) do_temp(opNullFreeArrayCheck->_tmp);
905 break;
906 }
907
908 // LIR_OpSubstitutabilityCheck
909 case lir_substitutability_check: {
910 assert(op->as_OpSubstitutabilityCheck() != nullptr, "must be");
911 LIR_OpSubstitutabilityCheck* opSubstitutabilityCheck = (LIR_OpSubstitutabilityCheck*)op;
912 do_input(opSubstitutabilityCheck->_left);
913 do_temp (opSubstitutabilityCheck->_left);
914 do_input(opSubstitutabilityCheck->_right);
915 do_temp (opSubstitutabilityCheck->_right);
916 do_input(opSubstitutabilityCheck->_equal_result);
917 do_temp (opSubstitutabilityCheck->_equal_result);
918 do_input(opSubstitutabilityCheck->_not_equal_result);
919 do_temp (opSubstitutabilityCheck->_not_equal_result);
920 if (opSubstitutabilityCheck->_tmp1->is_valid()) do_temp(opSubstitutabilityCheck->_tmp1);
921 if (opSubstitutabilityCheck->_tmp2->is_valid()) do_temp(opSubstitutabilityCheck->_tmp2);
922 if (opSubstitutabilityCheck->_left_klass_op->is_valid()) do_temp(opSubstitutabilityCheck->_left_klass_op);
923 if (opSubstitutabilityCheck->_right_klass_op->is_valid()) do_temp(opSubstitutabilityCheck->_right_klass_op);
924 if (opSubstitutabilityCheck->_result->is_valid()) do_output(opSubstitutabilityCheck->_result);
925
926 do_info(opSubstitutabilityCheck->_info);
927 do_stub(opSubstitutabilityCheck->_stub);
928 break;
929 }
930
931 // LIR_OpCompareAndSwap
932 case lir_cas_long:
933 case lir_cas_obj:
934 case lir_cas_int: {
935 assert(op->as_OpCompareAndSwap() != nullptr, "must be");
936 LIR_OpCompareAndSwap* opCmpAndSwap = (LIR_OpCompareAndSwap*)op;
937
938 if (opCmpAndSwap->_info) do_info(opCmpAndSwap->_info);
939 assert(opCmpAndSwap->_addr->is_valid(), "used"); do_input(opCmpAndSwap->_addr);
940 do_temp(opCmpAndSwap->_addr);
941 assert(opCmpAndSwap->_cmp_value->is_valid(), "used"); do_input(opCmpAndSwap->_cmp_value);
942 do_temp(opCmpAndSwap->_cmp_value);
943 assert(opCmpAndSwap->_new_value->is_valid(), "used"); do_input(opCmpAndSwap->_new_value);
944 do_temp(opCmpAndSwap->_new_value);
945 if (opCmpAndSwap->_tmp1->is_valid()) do_temp(opCmpAndSwap->_tmp1);
946 if (opCmpAndSwap->_tmp2->is_valid()) do_temp(opCmpAndSwap->_tmp2);
947 if (opCmpAndSwap->_result->is_valid()) do_output(opCmpAndSwap->_result);
948
949 break;
950 }
988 case lir_profile_call: {
989 assert(op->as_OpProfileCall() != nullptr, "must be");
990 LIR_OpProfileCall* opProfileCall = (LIR_OpProfileCall*)op;
991
992 if (opProfileCall->_recv->is_valid()) do_temp(opProfileCall->_recv);
993 assert(opProfileCall->_mdo->is_valid(), "used"); do_temp(opProfileCall->_mdo);
994 assert(opProfileCall->_tmp1->is_valid(), "used"); do_temp(opProfileCall->_tmp1);
995 break;
996 }
997
998 // LIR_OpProfileType:
999 case lir_profile_type: {
1000 assert(op->as_OpProfileType() != nullptr, "must be");
1001 LIR_OpProfileType* opProfileType = (LIR_OpProfileType*)op;
1002
1003 do_input(opProfileType->_mdp); do_temp(opProfileType->_mdp);
1004 do_input(opProfileType->_obj);
1005 do_temp(opProfileType->_tmp);
1006 break;
1007 }
1008
1009 // LIR_OpProfileInlineType:
1010 case lir_profile_inline_type: {
1011 assert(op->as_OpProfileInlineType() != nullptr, "must be");
1012 LIR_OpProfileInlineType* opProfileInlineType = (LIR_OpProfileInlineType*)op;
1013
1014 do_input(opProfileInlineType->_mdp); do_temp(opProfileInlineType->_mdp);
1015 do_input(opProfileInlineType->_obj);
1016 do_temp(opProfileInlineType->_tmp);
1017 break;
1018 }
1019 default:
1020 op->visit(this);
1021 }
1022 }
1023
1024 void LIR_Op::visit(LIR_OpVisitState* state) {
1025 ShouldNotReachHere();
1026 }
1027
1028 void LIR_OpVisitState::do_stub(CodeStub* stub) {
1029 if (stub != nullptr) {
1030 stub->visit(this);
1031 }
1032 }
1033
1034 XHandlers* LIR_OpVisitState::all_xhandler() {
1035 XHandlers* result = nullptr;
1036
1037 int i;
1038 for (i = 0; i < info_count(); i++) {
1039 if (info_at(i)->exception_handlers() != nullptr) {
1072 !has_slow_case();
1073 }
1074 #endif
1075
1076 // LIR_OpReturn
1077 LIR_OpReturn::LIR_OpReturn(LIR_Opr opr) :
1078 LIR_Op1(lir_return, opr, (CodeEmitInfo*)nullptr /* info */),
1079 _stub(nullptr) {
1080 if (VM_Version::supports_stack_watermark_barrier()) {
1081 _stub = new C1SafepointPollStub();
1082 }
1083 }
1084
1085 //---------------------------------------------------
1086
1087
1088 void LIR_OpJavaCall::emit_code(LIR_Assembler* masm) {
1089 masm->emit_call(this);
1090 }
1091
1092 bool LIR_OpJavaCall::maybe_return_as_fields(ciInlineKlass** vk_ret) const {
1093 ciType* return_type = method()->return_type();
1094 if (InlineTypeReturnedAsFields) {
1095 if (return_type->is_inlinetype()) {
1096 ciInlineKlass* vk = return_type->as_inline_klass();
1097 if (vk->can_be_returned_as_fields()) {
1098 if (vk_ret != nullptr) {
1099 *vk_ret = vk;
1100 }
1101 return true;
1102 }
1103 } else if (return_type->is_instance_klass() &&
1104 (method()->is_method_handle_intrinsic() || !return_type->is_loaded() ||
1105 StressCallingConvention)) {
1106 // An inline type might be returned from the call but we don't know its type.
1107 // This can happen with method handle intrinsics or when the return type is
1108 // not loaded (method holder is not loaded or preload attribute is missing).
1109 // If an inline type is returned, we either get an oop to a buffer and nothing
1110 // needs to be done or one of the values being returned is the klass of the
1111 // inline type (RAX on x64, with LSB set to 1) and we need to allocate an inline
1112 // type instance of that type and initialize it with the fields values being
1113 // returned in other registers.
1114 return true;
1115 }
1116 }
1117 return false;
1118 }
1119
1120 void LIR_OpRTCall::emit_code(LIR_Assembler* masm) {
1121 masm->emit_rtcall(this);
1122 }
1123
1124 void LIR_OpLabel::emit_code(LIR_Assembler* masm) {
1125 masm->emit_opLabel(this);
1126 }
1127
1128 void LIR_OpArrayCopy::emit_code(LIR_Assembler* masm) {
1129 masm->emit_arraycopy(this);
1130 ArrayCopyStub* code_stub = stub();
1131 if (code_stub != nullptr) {
1132 masm->append_code_stub(code_stub);
1133 }
1134 }
1135
1136 void LIR_OpUpdateCRC32::emit_code(LIR_Assembler* masm) {
1137 masm->emit_updatecrc32(this);
1138 }
1139
1163 masm->append_code_stub(stub());
1164 }
1165 }
1166
1167 void LIR_Op2::emit_code(LIR_Assembler* masm) {
1168 masm->emit_op2(this);
1169 }
1170
1171 void LIR_OpAllocArray::emit_code(LIR_Assembler* masm) {
1172 masm->emit_alloc_array(this);
1173 masm->append_code_stub(stub());
1174 }
1175
1176 void LIR_OpTypeCheck::emit_code(LIR_Assembler* masm) {
1177 masm->emit_opTypeCheck(this);
1178 if (stub()) {
1179 masm->append_code_stub(stub());
1180 }
1181 }
1182
1183 void LIR_OpFlattenedArrayCheck::emit_code(LIR_Assembler* masm) {
1184 masm->emit_opFlattenedArrayCheck(this);
1185 if (stub() != nullptr) {
1186 masm->append_code_stub(stub());
1187 }
1188 }
1189
1190 void LIR_OpNullFreeArrayCheck::emit_code(LIR_Assembler* masm) {
1191 masm->emit_opNullFreeArrayCheck(this);
1192 }
1193
1194 void LIR_OpSubstitutabilityCheck::emit_code(LIR_Assembler* masm) {
1195 masm->emit_opSubstitutabilityCheck(this);
1196 if (stub() != nullptr) {
1197 masm->append_code_stub(stub());
1198 }
1199 }
1200
1201 void LIR_OpCompareAndSwap::emit_code(LIR_Assembler* masm) {
1202 masm->emit_compare_and_swap(this);
1203 }
1204
1205 void LIR_Op3::emit_code(LIR_Assembler* masm) {
1206 masm->emit_op3(this);
1207 }
1208
1209 void LIR_Op4::emit_code(LIR_Assembler* masm) {
1210 masm->emit_op4(this);
1211 }
1212
1213 void LIR_OpLock::emit_code(LIR_Assembler* masm) {
1214 masm->emit_lock(this);
1215 if (stub()) {
1216 masm->append_code_stub(stub());
1217 }
1218 if (throw_ie_stub()) {
1219 masm->append_code_stub(throw_ie_stub());
1220 }
1221 }
1222
1223 void LIR_OpLoadKlass::emit_code(LIR_Assembler* masm) {
1224 masm->emit_load_klass(this);
1225 }
1226
1227 #ifdef ASSERT
1228 void LIR_OpAssert::emit_code(LIR_Assembler* masm) {
1229 masm->emit_assert(this);
1230 }
1231 #endif
1232
1233 void LIR_OpDelay::emit_code(LIR_Assembler* masm) {
1234 masm->emit_delay(this);
1235 }
1236
1237 void LIR_OpProfileCall::emit_code(LIR_Assembler* masm) {
1238 masm->emit_profile_call(this);
1239 }
1240
1241 void LIR_OpProfileType::emit_code(LIR_Assembler* masm) {
1242 masm->emit_profile_type(this);
1243 }
1244
1245 void LIR_OpProfileInlineType::emit_code(LIR_Assembler* masm) {
1246 masm->emit_profile_inline_type(this);
1247 }
1248
1249 // LIR_List
1250 LIR_List::LIR_List(Compilation* compilation, BlockBegin* block)
1251 : _operations(8)
1252 , _compilation(compilation)
1253 #ifndef PRODUCT
1254 , _block(block)
1255 #endif
1256 #ifdef ASSERT
1257 , _file(nullptr)
1258 , _line(0)
1259 #endif
1260 #ifdef RISCV
1261 , _cmp_opr1(LIR_OprFact::illegalOpr)
1262 , _cmp_opr2(LIR_OprFact::illegalOpr)
1263 #endif
1264 { }
1265
1266
1267 #ifdef ASSERT
1268 void LIR_List::set_file_and_line(const char * file, int line) {
1504 reg,
1505 LIR_OprFact::address(addr),
1506 info));
1507 }
1508
1509 void LIR_List::allocate_object(LIR_Opr dst, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1510 int header_size, int object_size, LIR_Opr klass, bool init_check, CodeStub* stub) {
1511 append(new LIR_OpAllocObj(
1512 klass,
1513 dst,
1514 t1,
1515 t2,
1516 t3,
1517 t4,
1518 header_size,
1519 object_size,
1520 init_check,
1521 stub));
1522 }
1523
1524 void LIR_List::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, bool is_null_free) {
1525 append(new LIR_OpAllocArray(
1526 klass,
1527 len,
1528 dst,
1529 t1,
1530 t2,
1531 t3,
1532 t4,
1533 type,
1534 stub,
1535 zero_array,
1536 is_null_free));
1537 }
1538
1539 void LIR_List::shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1540 append(new LIR_Op2(
1541 lir_shl,
1542 value,
1543 count,
1544 dst,
1545 tmp));
1546 }
1547
1548 void LIR_List::shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1549 append(new LIR_Op2(
1550 lir_shr,
1551 value,
1552 count,
1553 dst,
1554 tmp));
1555 }
1556
1557
1558 void LIR_List::unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1559 append(new LIR_Op2(
1560 lir_ushr,
1561 value,
1562 count,
1563 dst,
1564 tmp));
1565 }
1566
1567 void LIR_List::fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less) {
1568 append(new LIR_Op2(is_unordered_less ? lir_ucmp_fd2i : lir_cmp_fd2i,
1569 left,
1570 right,
1571 dst));
1572 }
1573
1574 void LIR_List::lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_ie_stub) {
1575 append(new LIR_OpLock(
1576 lir_lock,
1577 hdr,
1578 obj,
1579 lock,
1580 scratch,
1581 stub,
1582 info,
1583 throw_ie_stub));
1584 }
1585
1586 void LIR_List::unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub) {
1587 append(new LIR_OpLock(
1588 lir_unlock,
1589 hdr,
1590 obj,
1591 lock,
1592 scratch,
1593 stub,
1594 nullptr));
1595 }
1596
1597
1598 void check_LIR() {
1599 // cannot do the proper checking as PRODUCT and other modes return different results
1600 // guarantee(sizeof(LIR_Opr) == wordSize, "may not have a v-table");
1601 }
1602
1603
1604
1605 void LIR_List::checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
1606 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1607 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
1608 ciMethod* profiled_method, int profiled_bci, bool is_null_free) {
1609 // If klass is non-nullable, LIRGenerator::do_CheckCast has already performed null-check
1610 // on the object.
1611 bool need_null_check = !is_null_free;
1612 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_checkcast, result, object, klass,
1613 tmp1, tmp2, tmp3, fast_check, info_for_exception, info_for_patch, stub,
1614 need_null_check);
1615 if (profiled_method != nullptr) {
1616 c->set_profiled_method(profiled_method);
1617 c->set_profiled_bci(profiled_bci);
1618 c->set_should_profile(true);
1619 }
1620 append(c);
1621 }
1622
1623 void LIR_List::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) {
1624 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_instanceof, result, object, klass, tmp1, tmp2, tmp3, fast_check, nullptr, info_for_patch, nullptr);
1625 if (profiled_method != nullptr) {
1626 c->set_profiled_method(profiled_method);
1627 c->set_profiled_bci(profiled_bci);
1628 c->set_should_profile(true);
1629 }
1630 append(c);
1631 }
1632
1633
1634 void LIR_List::store_check(LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3,
1635 CodeEmitInfo* info_for_exception, ciMethod* profiled_method, int profiled_bci) {
1636 // FIXME -- if the types of the array and/or the object are known statically, we can avoid loading the klass
1637 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_store_check, object, array, tmp1, tmp2, tmp3, info_for_exception);
1638 if (profiled_method != nullptr) {
1639 c->set_profiled_method(profiled_method);
1640 c->set_profiled_bci(profiled_bci);
1641 c->set_should_profile(true);
1642 }
1643 append(c);
1644 }
1645
1646 void LIR_List::null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null) {
1647 if (deoptimize_on_null) {
1648 // Emit an explicit null check and deoptimize if opr is null
1649 CodeStub* deopt = new DeoptimizeStub(info, Deoptimization::Reason_null_check, Deoptimization::Action_none);
1650 cmp(lir_cond_equal, opr, LIR_OprFact::oopConst(nullptr));
1651 branch(lir_cond_equal, deopt);
1652 } else {
1653 // Emit an implicit null check
1654 append(new LIR_Op1(lir_null_check, opr, info));
1655 }
1656 }
1657
1658 void LIR_List::check_flat_array(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub) {
1659 LIR_OpFlattenedArrayCheck* c = new LIR_OpFlattenedArrayCheck(array, value, tmp, stub);
1660 append(c);
1661 }
1662
1663 void LIR_List::check_null_free_array(LIR_Opr array, LIR_Opr tmp) {
1664 LIR_OpNullFreeArrayCheck* c = new LIR_OpNullFreeArrayCheck(array, tmp);
1665 append(c);
1666 }
1667
1668 void LIR_List::substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
1669 LIR_Opr tmp1, LIR_Opr tmp2,
1670 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
1671 CodeEmitInfo* info, CodeStub* stub) {
1672 LIR_OpSubstitutabilityCheck* c = new LIR_OpSubstitutabilityCheck(result, left, right, equal_result, not_equal_result,
1673 tmp1, tmp2,
1674 left_klass, right_klass, left_klass_op, right_klass_op,
1675 info, stub);
1676 append(c);
1677 }
1678
1679 void LIR_List::cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1680 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1681 append(new LIR_OpCompareAndSwap(lir_cas_long, addr, cmp_value, new_value, t1, t2, result));
1682 }
1683
1684 void LIR_List::cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1685 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1686 append(new LIR_OpCompareAndSwap(lir_cas_obj, addr, cmp_value, new_value, t1, t2, result));
1687 }
1688
1689 void LIR_List::cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1690 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1691 append(new LIR_OpCompareAndSwap(lir_cas_int, addr, cmp_value, new_value, t1, t2, result));
1692 }
1693
1694
1695 #ifdef PRODUCT
1696
1697 void print_LIR(BlockList* blocks) {
1698 }
1875
1876 const char * LIR_Op::name() const {
1877 const char* s = nullptr;
1878 switch(code()) {
1879 // LIR_Op0
1880 case lir_membar: s = "membar"; break;
1881 case lir_membar_acquire: s = "membar_acquire"; break;
1882 case lir_membar_release: s = "membar_release"; break;
1883 case lir_membar_loadload: s = "membar_loadload"; break;
1884 case lir_membar_storestore: s = "membar_storestore"; break;
1885 case lir_membar_loadstore: s = "membar_loadstore"; break;
1886 case lir_membar_storeload: s = "membar_storeload"; break;
1887 case lir_label: s = "label"; break;
1888 case lir_nop: s = "nop"; break;
1889 case lir_on_spin_wait: s = "on_spin_wait"; break;
1890 case lir_std_entry: s = "std_entry"; break;
1891 case lir_osr_entry: s = "osr_entry"; break;
1892 case lir_fpop_raw: s = "fpop_raw"; break;
1893 case lir_breakpoint: s = "breakpoint"; break;
1894 case lir_get_thread: s = "get_thread"; break;
1895 case lir_check_orig_pc: s = "check_orig_pc"; break;
1896 // LIR_Op1
1897 case lir_fxch: s = "fxch"; break;
1898 case lir_fld: s = "fld"; break;
1899 case lir_push: s = "push"; break;
1900 case lir_pop: s = "pop"; break;
1901 case lir_null_check: s = "null_check"; break;
1902 case lir_return: s = "return"; break;
1903 case lir_safepoint: s = "safepoint"; break;
1904 case lir_leal: s = "leal"; break;
1905 case lir_branch: s = "branch"; break;
1906 case lir_cond_float_branch: s = "flt_cond_br"; break;
1907 case lir_move: s = "move"; break;
1908 case lir_roundfp: s = "roundfp"; break;
1909 case lir_rtcall: s = "rtcall"; break;
1910 case lir_throw: s = "throw"; break;
1911 case lir_unwind: s = "unwind"; break;
1912 case lir_convert: s = "convert"; break;
1913 case lir_alloc_object: s = "alloc_obj"; break;
1914 case lir_monaddr: s = "mon_addr"; break;
1915 // LIR_Op2
1944 // LIR_Op4
1945 case lir_cmove: s = "cmove"; break;
1946 // LIR_OpJavaCall
1947 case lir_static_call: s = "static"; break;
1948 case lir_optvirtual_call: s = "optvirtual"; break;
1949 case lir_icvirtual_call: s = "icvirtual"; break;
1950 case lir_dynamic_call: s = "dynamic"; break;
1951 // LIR_OpArrayCopy
1952 case lir_arraycopy: s = "arraycopy"; break;
1953 // LIR_OpUpdateCRC32
1954 case lir_updatecrc32: s = "updatecrc32"; break;
1955 // LIR_OpLock
1956 case lir_lock: s = "lock"; break;
1957 case lir_unlock: s = "unlock"; break;
1958 // LIR_OpDelay
1959 case lir_delay_slot: s = "delay"; break;
1960 // LIR_OpTypeCheck
1961 case lir_instanceof: s = "instanceof"; break;
1962 case lir_checkcast: s = "checkcast"; break;
1963 case lir_store_check: s = "store_check"; break;
1964 // LIR_OpFlattenedArrayCheck
1965 case lir_flat_array_check: s = "flat_array_check"; break;
1966 // LIR_OpNullFreeArrayCheck
1967 case lir_null_free_array_check: s = "null_free_array_check"; break;
1968 // LIR_OpSubstitutabilityCheck
1969 case lir_substitutability_check: s = "substitutability_check"; break;
1970 // LIR_OpCompareAndSwap
1971 case lir_cas_long: s = "cas_long"; break;
1972 case lir_cas_obj: s = "cas_obj"; break;
1973 case lir_cas_int: s = "cas_int"; break;
1974 // LIR_OpProfileCall
1975 case lir_profile_call: s = "profile_call"; break;
1976 // LIR_OpProfileType
1977 case lir_profile_type: s = "profile_type"; break;
1978 // LIR_OpProfileInlineType
1979 case lir_profile_inline_type: s = "profile_inline_type"; break;
1980 // LIR_OpAssert
1981 #ifdef ASSERT
1982 case lir_assert: s = "assert"; break;
1983 #endif
1984 case lir_none: ShouldNotReachHere();break;
1985 default: s = "illegal_op"; break;
1986 }
1987 return s;
1988 }
1989
1990 // LIR_OpJavaCall
1991 void LIR_OpJavaCall::print_instr(outputStream* out) const {
1992 out->print("call: ");
1993 out->print("[addr: " INTPTR_FORMAT "]", p2i(address()));
1994 if (receiver()->is_valid()) {
1995 out->print(" [recv: "); receiver()->print(out); out->print("]");
1996 }
1997 if (result_opr()->is_valid()) {
1998 out->print(" [result: "); result_opr()->print(out); out->print("]");
1999 }
2191 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
2192 }
2193
2194
2195 void LIR_OpTypeCheck::print_instr(outputStream* out) const {
2196 object()->print(out); out->print(" ");
2197 if (code() == lir_store_check) {
2198 array()->print(out); out->print(" ");
2199 }
2200 if (code() != lir_store_check) {
2201 klass()->print_name_on(out); out->print(" ");
2202 if (fast_check()) out->print("fast_check ");
2203 }
2204 tmp1()->print(out); out->print(" ");
2205 tmp2()->print(out); out->print(" ");
2206 tmp3()->print(out); out->print(" ");
2207 result_opr()->print(out); out->print(" ");
2208 if (info_for_exception() != nullptr) out->print(" [bci:%d]", info_for_exception()->stack()->bci());
2209 }
2210
2211 void LIR_OpFlattenedArrayCheck::print_instr(outputStream* out) const {
2212 array()->print(out); out->print(" ");
2213 value()->print(out); out->print(" ");
2214 tmp()->print(out); out->print(" ");
2215 if (stub() != nullptr) {
2216 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
2217 }
2218 }
2219
2220 void LIR_OpNullFreeArrayCheck::print_instr(outputStream* out) const {
2221 array()->print(out); out->print(" ");
2222 tmp()->print(out); out->print(" ");
2223 }
2224
2225 void LIR_OpSubstitutabilityCheck::print_instr(outputStream* out) const {
2226 result_opr()->print(out); out->print(" ");
2227 left()->print(out); out->print(" ");
2228 right()->print(out); out->print(" ");
2229 equal_result()->print(out); out->print(" ");
2230 not_equal_result()->print(out); out->print(" ");
2231 tmp1()->print(out); out->print(" ");
2232 tmp2()->print(out); out->print(" ");
2233 if (left_klass() == nullptr) {
2234 out->print("unknown ");
2235 } else {
2236 left_klass()->print(out); out->print(" ");
2237 }
2238 if (right_klass() == nullptr) {
2239 out->print("unknown ");
2240 } else {
2241 right_klass()->print(out); out->print(" ");
2242 }
2243 left_klass_op()->print(out); out->print(" ");
2244 right_klass_op()->print(out); out->print(" ");
2245 if (stub() != nullptr) {
2246 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
2247 }
2248 }
2249
2250 // LIR_Op3
2251 void LIR_Op3::print_instr(outputStream* out) const {
2252 in_opr1()->print(out); out->print(" ");
2253 in_opr2()->print(out); out->print(" ");
2254 in_opr3()->print(out); out->print(" ");
2255 result_opr()->print(out);
2256 }
2257
2258 // LIR_Op4
2259 void LIR_Op4::print_instr(outputStream* out) const {
2260 print_condition(out, condition()); out->print(" ");
2261 in_opr1()->print(out); out->print(" ");
2262 in_opr2()->print(out); out->print(" ");
2263 in_opr3()->print(out); out->print(" ");
2264 in_opr4()->print(out); out->print(" ");
2265 result_opr()->print(out);
2266 }
2267
2268 void LIR_OpLock::print_instr(outputStream* out) const {
2304 mdo()->print(out); out->print(" ");
2305 recv()->print(out); out->print(" ");
2306 tmp1()->print(out); out->print(" ");
2307 }
2308
2309 // LIR_OpProfileType
2310 void LIR_OpProfileType::print_instr(outputStream* out) const {
2311 out->print("exact = ");
2312 if (exact_klass() == nullptr) {
2313 out->print("unknown");
2314 } else {
2315 exact_klass()->print_name_on(out);
2316 }
2317 out->print(" current = "); ciTypeEntries::print_ciklass(out, current_klass());
2318 out->print(" ");
2319 mdp()->print(out); out->print(" ");
2320 obj()->print(out); out->print(" ");
2321 tmp()->print(out); out->print(" ");
2322 }
2323
2324 // LIR_OpProfileInlineType
2325 void LIR_OpProfileInlineType::print_instr(outputStream* out) const {
2326 out->print(" flag = %x ", flag());
2327 mdp()->print(out); out->print(" ");
2328 obj()->print(out); out->print(" ");
2329 tmp()->print(out); out->print(" ");
2330 }
2331
2332 #endif // PRODUCT
2333
2334 // Implementation of LIR_InsertionBuffer
2335
2336 void LIR_InsertionBuffer::append(int index, LIR_Op* op) {
2337 assert(_index_and_count.length() % 2 == 0, "must have a count for each index");
2338
2339 int i = number_of_insertion_points() - 1;
2340 if (i < 0 || index_at(i) < index) {
2341 append_new(index, 1);
2342 } else {
2343 assert(index_at(i) == index, "can append LIR_Ops in ascending order only");
2344 assert(count_at(i) > 0, "check");
2345 set_count_at(i, count_at(i) + 1);
2346 }
2347 _ops.push(op);
2348
2349 DEBUG_ONLY(verify());
2350 }
2351
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