1 /*
2 * Copyright (c) 2000, 2025, 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 #include "c1/c1_CodeStubs.hpp"
26 #include "c1/c1_InstructionPrinter.hpp"
27 #include "c1/c1_LIR.hpp"
28 #include "c1/c1_LIRAssembler.hpp"
29 #include "c1/c1_ValueStack.hpp"
30 #include "ci/ciInstance.hpp"
31 #include "runtime/safepointMechanism.inline.hpp"
32 #include "runtime/sharedRuntime.hpp"
33 #include "runtime/vm_version.hpp"
34
35 Register LIR_Opr::as_register() const {
36 return FrameMap::cpu_rnr2reg(cpu_regnr());
37 }
38
39 Register LIR_Opr::as_register_lo() const {
40 return FrameMap::cpu_rnr2reg(cpu_regnrLo());
41 }
42
43 Register LIR_Opr::as_register_hi() const {
44 return FrameMap::cpu_rnr2reg(cpu_regnrHi());
45 }
46
47 LIR_Opr LIR_OprFact::illegalOpr = LIR_OprFact::illegal();
48 LIR_Opr LIR_OprFact::nullOpr = LIR_Opr();
49
269 assert(_ublock != nullptr, "must have old block");
270 _ublock = b;
271 }
272
273 void LIR_OpBranch::negate_cond() {
274 switch (cond()) {
275 case lir_cond_equal: set_cond(lir_cond_notEqual); break;
276 case lir_cond_notEqual: set_cond(lir_cond_equal); break;
277 case lir_cond_less: set_cond(lir_cond_greaterEqual); break;
278 case lir_cond_lessEqual: set_cond(lir_cond_greater); break;
279 case lir_cond_greaterEqual: set_cond(lir_cond_less); break;
280 case lir_cond_greater: set_cond(lir_cond_lessEqual); break;
281 default: ShouldNotReachHere();
282 }
283 }
284
285
286 LIR_OpTypeCheck::LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
287 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3,
288 bool fast_check, CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch,
289 CodeStub* stub)
290
291 : LIR_Op(code, result, nullptr)
292 , _object(object)
293 , _array(LIR_OprFact::illegalOpr)
294 , _klass(klass)
295 , _tmp1(tmp1)
296 , _tmp2(tmp2)
297 , _tmp3(tmp3)
298 , _info_for_patch(info_for_patch)
299 , _info_for_exception(info_for_exception)
300 , _stub(stub)
301 , _profiled_method(nullptr)
302 , _profiled_bci(-1)
303 , _should_profile(false)
304 , _fast_check(fast_check)
305 {
306 if (code == lir_checkcast) {
307 assert(info_for_exception != nullptr, "checkcast throws exceptions");
308 } else if (code == lir_instanceof) {
309 assert(info_for_exception == nullptr, "instanceof throws no exceptions");
310 } else {
311 ShouldNotReachHere();
312 }
313 }
314
315
316
317 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)
318 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr)
319 , _object(object)
320 , _array(array)
321 , _klass(nullptr)
322 , _tmp1(tmp1)
323 , _tmp2(tmp2)
324 , _tmp3(tmp3)
325 , _info_for_patch(nullptr)
326 , _info_for_exception(info_for_exception)
327 , _stub(nullptr)
328 , _profiled_method(nullptr)
329 , _profiled_bci(-1)
330 , _should_profile(false)
331 , _fast_check(false)
332 {
333 if (code == lir_store_check) {
334 _stub = new ArrayStoreExceptionStub(object, info_for_exception);
335 assert(info_for_exception != nullptr, "store_check throws exceptions");
336 } else {
337 ShouldNotReachHere();
338 }
339 }
340
341
342 LIR_OpArrayCopy::LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length,
343 LIR_Opr tmp, ciArrayKlass* expected_type, int flags, CodeEmitInfo* info)
344 : LIR_Op(lir_arraycopy, LIR_OprFact::illegalOpr, info)
345 , _src(src)
346 , _src_pos(src_pos)
347 , _dst(dst)
348 , _dst_pos(dst_pos)
349 , _length(length)
350 , _tmp(tmp)
351 , _expected_type(expected_type)
352 , _flags(flags) {
353 #if defined(X86) || defined(AARCH64) || defined(S390) || defined(RISCV64) || defined(PPC64)
354 if (expected_type != nullptr &&
355 ((flags & ~LIR_OpArrayCopy::get_initial_copy_flags()) == 0)) {
356 _stub = nullptr;
357 } else {
358 _stub = new ArrayCopyStub(this);
359 }
360 #else
395 // complete rework of LIR instruction visitor.
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_breakpoint: // result and info always invalid
408 case lir_membar: // result and info always invalid
409 case lir_membar_acquire: // result and info always invalid
410 case lir_membar_release: // result and info always invalid
411 case lir_membar_loadload: // result and info always invalid
412 case lir_membar_storestore: // result and info always invalid
413 case lir_membar_loadstore: // result and info always invalid
414 case lir_membar_storeload: // result and info always invalid
415 case lir_on_spin_wait:
416 {
417 assert(op->as_Op0() != nullptr, "must be");
418 assert(op->_info == nullptr, "info not used by this instruction");
419 assert(op->_result->is_illegal(), "not used");
420 break;
421 }
422
423 case lir_nop: // may have info, result always invalid
424 case lir_std_entry: // may have result, info always invalid
425 case lir_osr_entry: // may have result, info always invalid
426 case lir_get_thread: // may have result, info always invalid
427 {
428 assert(op->as_Op0() != nullptr, "must be");
429 if (op->_info != nullptr) do_info(op->_info);
430 if (op->_result->is_valid()) do_output(op->_result);
431 break;
432 }
433
434
772
773
774 // LIR_OpLock
775 case lir_lock:
776 case lir_unlock: {
777 assert(op->as_OpLock() != nullptr, "must be");
778 LIR_OpLock* opLock = (LIR_OpLock*)op;
779
780 if (opLock->_info) do_info(opLock->_info);
781
782 // TODO: check if these operands really have to be temp
783 // (or if input is sufficient). This may have influence on the oop map!
784 assert(opLock->_lock->is_valid(), "used"); do_temp(opLock->_lock);
785 assert(opLock->_hdr->is_valid(), "used"); do_temp(opLock->_hdr);
786 assert(opLock->_obj->is_valid(), "used"); do_temp(opLock->_obj);
787
788 if (opLock->_scratch->is_valid()) do_temp(opLock->_scratch);
789 assert(opLock->_result->is_illegal(), "unused");
790
791 do_stub(opLock->_stub);
792
793 break;
794 }
795
796
797 // LIR_OpTypeCheck
798 case lir_instanceof:
799 case lir_checkcast:
800 case lir_store_check: {
801 assert(op->as_OpTypeCheck() != nullptr, "must be");
802 LIR_OpTypeCheck* opTypeCheck = (LIR_OpTypeCheck*)op;
803
804 if (opTypeCheck->_info_for_exception) do_info(opTypeCheck->_info_for_exception);
805 if (opTypeCheck->_info_for_patch) do_info(opTypeCheck->_info_for_patch);
806 if (opTypeCheck->_object->is_valid()) do_input(opTypeCheck->_object);
807 if (op->code() == lir_store_check && opTypeCheck->_object->is_valid()) {
808 do_temp(opTypeCheck->_object);
809 }
810 if (opTypeCheck->_array->is_valid()) do_input(opTypeCheck->_array);
811 if (opTypeCheck->_tmp1->is_valid()) do_temp(opTypeCheck->_tmp1);
812 if (opTypeCheck->_tmp2->is_valid()) do_temp(opTypeCheck->_tmp2);
813 if (opTypeCheck->_tmp3->is_valid()) do_temp(opTypeCheck->_tmp3);
814 if (opTypeCheck->_result->is_valid()) do_output(opTypeCheck->_result);
815 if (opTypeCheck->_stub != nullptr) do_stub(opTypeCheck->_stub);
816 break;
817 }
818
819 // LIR_OpCompareAndSwap
820 case lir_cas_long:
821 case lir_cas_obj:
822 case lir_cas_int: {
823 assert(op->as_OpCompareAndSwap() != nullptr, "must be");
824 LIR_OpCompareAndSwap* opCmpAndSwap = (LIR_OpCompareAndSwap*)op;
825
826 if (opCmpAndSwap->_info) do_info(opCmpAndSwap->_info);
827 assert(opCmpAndSwap->_addr->is_valid(), "used"); do_input(opCmpAndSwap->_addr);
828 do_temp(opCmpAndSwap->_addr);
829 assert(opCmpAndSwap->_cmp_value->is_valid(), "used"); do_input(opCmpAndSwap->_cmp_value);
830 do_temp(opCmpAndSwap->_cmp_value);
831 assert(opCmpAndSwap->_new_value->is_valid(), "used"); do_input(opCmpAndSwap->_new_value);
832 do_temp(opCmpAndSwap->_new_value);
833 if (opCmpAndSwap->_tmp1->is_valid()) do_temp(opCmpAndSwap->_tmp1);
834 if (opCmpAndSwap->_tmp2->is_valid()) do_temp(opCmpAndSwap->_tmp2);
835 if (opCmpAndSwap->_result->is_valid()) do_output(opCmpAndSwap->_result);
836
837 break;
838 }
876 case lir_profile_call: {
877 assert(op->as_OpProfileCall() != nullptr, "must be");
878 LIR_OpProfileCall* opProfileCall = (LIR_OpProfileCall*)op;
879
880 if (opProfileCall->_recv->is_valid()) do_temp(opProfileCall->_recv);
881 assert(opProfileCall->_mdo->is_valid(), "used"); do_temp(opProfileCall->_mdo);
882 assert(opProfileCall->_tmp1->is_valid(), "used"); do_temp(opProfileCall->_tmp1);
883 break;
884 }
885
886 // LIR_OpProfileType:
887 case lir_profile_type: {
888 assert(op->as_OpProfileType() != nullptr, "must be");
889 LIR_OpProfileType* opProfileType = (LIR_OpProfileType*)op;
890
891 do_input(opProfileType->_mdp); do_temp(opProfileType->_mdp);
892 do_input(opProfileType->_obj);
893 do_temp(opProfileType->_tmp);
894 break;
895 }
896 default:
897 op->visit(this);
898 }
899 }
900
901 void LIR_Op::visit(LIR_OpVisitState* state) {
902 ShouldNotReachHere();
903 }
904
905 void LIR_OpVisitState::do_stub(CodeStub* stub) {
906 if (stub != nullptr) {
907 stub->visit(this);
908 }
909 }
910
911 XHandlers* LIR_OpVisitState::all_xhandler() {
912 XHandlers* result = nullptr;
913
914 int i;
915 for (i = 0; i < info_count(); i++) {
916 if (info_at(i)->exception_handlers() != nullptr) {
949 !has_slow_case();
950 }
951 #endif
952
953 // LIR_OpReturn
954 LIR_OpReturn::LIR_OpReturn(LIR_Opr opr) :
955 LIR_Op1(lir_return, opr, (CodeEmitInfo*)nullptr /* info */),
956 _stub(nullptr) {
957 if (VM_Version::supports_stack_watermark_barrier()) {
958 _stub = new C1SafepointPollStub();
959 }
960 }
961
962 //---------------------------------------------------
963
964
965 void LIR_OpJavaCall::emit_code(LIR_Assembler* masm) {
966 masm->emit_call(this);
967 }
968
969 void LIR_OpRTCall::emit_code(LIR_Assembler* masm) {
970 masm->emit_rtcall(this);
971 }
972
973 void LIR_OpLabel::emit_code(LIR_Assembler* masm) {
974 masm->emit_opLabel(this);
975 }
976
977 void LIR_OpArrayCopy::emit_code(LIR_Assembler* masm) {
978 masm->emit_arraycopy(this);
979 ArrayCopyStub* code_stub = stub();
980 if (code_stub != nullptr) {
981 masm->append_code_stub(code_stub);
982 }
983 }
984
985 void LIR_OpUpdateCRC32::emit_code(LIR_Assembler* masm) {
986 masm->emit_updatecrc32(this);
987 }
988
1009 void LIR_OpConvert::emit_code(LIR_Assembler* masm) {
1010 masm->emit_opConvert(this);
1011 }
1012
1013 void LIR_Op2::emit_code(LIR_Assembler* masm) {
1014 masm->emit_op2(this);
1015 }
1016
1017 void LIR_OpAllocArray::emit_code(LIR_Assembler* masm) {
1018 masm->emit_alloc_array(this);
1019 masm->append_code_stub(stub());
1020 }
1021
1022 void LIR_OpTypeCheck::emit_code(LIR_Assembler* masm) {
1023 masm->emit_opTypeCheck(this);
1024 if (stub()) {
1025 masm->append_code_stub(stub());
1026 }
1027 }
1028
1029 void LIR_OpCompareAndSwap::emit_code(LIR_Assembler* masm) {
1030 masm->emit_compare_and_swap(this);
1031 }
1032
1033 void LIR_Op3::emit_code(LIR_Assembler* masm) {
1034 masm->emit_op3(this);
1035 }
1036
1037 void LIR_Op4::emit_code(LIR_Assembler* masm) {
1038 masm->emit_op4(this);
1039 }
1040
1041 void LIR_OpLock::emit_code(LIR_Assembler* masm) {
1042 masm->emit_lock(this);
1043 if (stub()) {
1044 masm->append_code_stub(stub());
1045 }
1046 }
1047
1048 void LIR_OpLoadKlass::emit_code(LIR_Assembler* masm) {
1049 masm->emit_load_klass(this);
1050 }
1051
1052 #ifdef ASSERT
1053 void LIR_OpAssert::emit_code(LIR_Assembler* masm) {
1054 masm->emit_assert(this);
1055 }
1056 #endif
1057
1058 void LIR_OpProfileCall::emit_code(LIR_Assembler* masm) {
1059 masm->emit_profile_call(this);
1060 }
1061
1062 void LIR_OpProfileType::emit_code(LIR_Assembler* masm) {
1063 masm->emit_profile_type(this);
1064 }
1065
1066 // LIR_List
1067 LIR_List::LIR_List(Compilation* compilation, BlockBegin* block)
1068 : _operations(8)
1069 , _compilation(compilation)
1070 #ifndef PRODUCT
1071 , _block(block)
1072 #endif
1073 #ifdef ASSERT
1074 , _file(nullptr)
1075 , _line(0)
1076 #endif
1077 #ifdef RISCV
1078 , _cmp_opr1(LIR_OprFact::illegalOpr)
1079 , _cmp_opr2(LIR_OprFact::illegalOpr)
1080 #endif
1081 { }
1082
1083
1084 #ifdef ASSERT
1085 void LIR_List::set_file_and_line(const char * file, int line) {
1321 reg,
1322 LIR_OprFact::address(addr),
1323 info));
1324 }
1325
1326 void LIR_List::allocate_object(LIR_Opr dst, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1327 int header_size, int object_size, LIR_Opr klass, bool init_check, CodeStub* stub) {
1328 append(new LIR_OpAllocObj(
1329 klass,
1330 dst,
1331 t1,
1332 t2,
1333 t3,
1334 t4,
1335 header_size,
1336 object_size,
1337 init_check,
1338 stub));
1339 }
1340
1341 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) {
1342 append(new LIR_OpAllocArray(
1343 klass,
1344 len,
1345 dst,
1346 t1,
1347 t2,
1348 t3,
1349 t4,
1350 type,
1351 stub,
1352 zero_array));
1353 }
1354
1355 void LIR_List::shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1356 append(new LIR_Op2(
1357 lir_shl,
1358 value,
1359 count,
1360 dst,
1361 tmp));
1362 }
1363
1364 void LIR_List::shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1365 append(new LIR_Op2(
1366 lir_shr,
1367 value,
1368 count,
1369 dst,
1370 tmp));
1371 }
1372
1373
1374 void LIR_List::unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1375 append(new LIR_Op2(
1376 lir_ushr,
1377 value,
1378 count,
1379 dst,
1380 tmp));
1381 }
1382
1383 void LIR_List::fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less) {
1384 append(new LIR_Op2(is_unordered_less ? lir_ucmp_fd2i : lir_cmp_fd2i,
1385 left,
1386 right,
1387 dst));
1388 }
1389
1390 void LIR_List::lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info) {
1391 append(new LIR_OpLock(
1392 lir_lock,
1393 hdr,
1394 obj,
1395 lock,
1396 scratch,
1397 stub,
1398 info));
1399 }
1400
1401 void LIR_List::unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub) {
1402 append(new LIR_OpLock(
1403 lir_unlock,
1404 hdr,
1405 obj,
1406 lock,
1407 scratch,
1408 stub,
1409 nullptr));
1410 }
1411
1412
1413 void check_LIR() {
1414 // cannot do the proper checking as PRODUCT and other modes return different results
1415 // guarantee(sizeof(LIR_Opr) == wordSize, "may not have a v-table");
1416 }
1417
1418
1419
1420 void LIR_List::checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
1421 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1422 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
1423 ciMethod* profiled_method, int profiled_bci) {
1424 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_checkcast, result, object, klass,
1425 tmp1, tmp2, tmp3, fast_check, info_for_exception, info_for_patch, stub);
1426 if (profiled_method != nullptr && TypeProfileCasts) {
1427 c->set_profiled_method(profiled_method);
1428 c->set_profiled_bci(profiled_bci);
1429 c->set_should_profile(true);
1430 }
1431 append(c);
1432 }
1433
1434 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) {
1435 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_instanceof, result, object, klass, tmp1, tmp2, tmp3, fast_check, nullptr, info_for_patch, nullptr);
1436 if (profiled_method != nullptr && TypeProfileCasts) {
1437 c->set_profiled_method(profiled_method);
1438 c->set_profiled_bci(profiled_bci);
1439 c->set_should_profile(true);
1440 }
1441 append(c);
1442 }
1443
1444
1445 void LIR_List::store_check(LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3,
1448 if (profiled_method != nullptr && TypeProfileCasts) {
1449 c->set_profiled_method(profiled_method);
1450 c->set_profiled_bci(profiled_bci);
1451 c->set_should_profile(true);
1452 }
1453 append(c);
1454 }
1455
1456 void LIR_List::null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null) {
1457 if (deoptimize_on_null) {
1458 // Emit an explicit null check and deoptimize if opr is null
1459 CodeStub* deopt = new DeoptimizeStub(info, Deoptimization::Reason_null_check, Deoptimization::Action_none);
1460 cmp(lir_cond_equal, opr, LIR_OprFact::oopConst(nullptr));
1461 branch(lir_cond_equal, deopt);
1462 } else {
1463 // Emit an implicit null check
1464 append(new LIR_Op1(lir_null_check, opr, info));
1465 }
1466 }
1467
1468 void LIR_List::cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1469 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1470 append(new LIR_OpCompareAndSwap(lir_cas_long, addr, cmp_value, new_value, t1, t2, result));
1471 }
1472
1473 void LIR_List::cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1474 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1475 append(new LIR_OpCompareAndSwap(lir_cas_obj, addr, cmp_value, new_value, t1, t2, result));
1476 }
1477
1478 void LIR_List::cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1479 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1480 append(new LIR_OpCompareAndSwap(lir_cas_int, addr, cmp_value, new_value, t1, t2, result));
1481 }
1482
1483
1484 #ifdef PRODUCT
1485
1486 void print_LIR(BlockList* blocks) {
1487 }
1663 }
1664
1665 const char * LIR_Op::name() const {
1666 const char* s = nullptr;
1667 switch(code()) {
1668 // LIR_Op0
1669 case lir_membar: s = "membar"; break;
1670 case lir_membar_acquire: s = "membar_acquire"; break;
1671 case lir_membar_release: s = "membar_release"; break;
1672 case lir_membar_loadload: s = "membar_loadload"; break;
1673 case lir_membar_storestore: s = "membar_storestore"; break;
1674 case lir_membar_loadstore: s = "membar_loadstore"; break;
1675 case lir_membar_storeload: s = "membar_storeload"; break;
1676 case lir_label: s = "label"; break;
1677 case lir_nop: s = "nop"; break;
1678 case lir_on_spin_wait: s = "on_spin_wait"; break;
1679 case lir_std_entry: s = "std_entry"; break;
1680 case lir_osr_entry: s = "osr_entry"; break;
1681 case lir_breakpoint: s = "breakpoint"; break;
1682 case lir_get_thread: s = "get_thread"; break;
1683 // LIR_Op1
1684 case lir_push: s = "push"; break;
1685 case lir_pop: s = "pop"; break;
1686 case lir_null_check: s = "null_check"; break;
1687 case lir_return: s = "return"; break;
1688 case lir_safepoint: s = "safepoint"; break;
1689 case lir_leal: s = "leal"; break;
1690 case lir_branch: s = "branch"; break;
1691 case lir_cond_float_branch: s = "flt_cond_br"; break;
1692 case lir_move: s = "move"; break;
1693 case lir_abs: s = "abs"; break;
1694 case lir_neg: s = "neg"; break;
1695 case lir_sqrt: s = "sqrt"; break;
1696 case lir_f2hf: s = "f2hf"; break;
1697 case lir_hf2f: s = "hf2f"; break;
1698 case lir_rtcall: s = "rtcall"; break;
1699 case lir_throw: s = "throw"; break;
1700 case lir_unwind: s = "unwind"; break;
1701 case lir_convert: s = "convert"; break;
1702 case lir_alloc_object: s = "alloc_obj"; break;
1726 case lir_fmad: s = "fmad"; break;
1727 case lir_fmaf: s = "fmaf"; break;
1728 // LIR_Op4
1729 case lir_cmove: s = "cmove"; break;
1730 // LIR_OpJavaCall
1731 case lir_static_call: s = "static"; break;
1732 case lir_optvirtual_call: s = "optvirtual"; break;
1733 case lir_icvirtual_call: s = "icvirtual"; break;
1734 case lir_dynamic_call: s = "dynamic"; break;
1735 // LIR_OpArrayCopy
1736 case lir_arraycopy: s = "arraycopy"; break;
1737 // LIR_OpUpdateCRC32
1738 case lir_updatecrc32: s = "updatecrc32"; break;
1739 // LIR_OpLock
1740 case lir_lock: s = "lock"; break;
1741 case lir_unlock: s = "unlock"; break;
1742 // LIR_OpTypeCheck
1743 case lir_instanceof: s = "instanceof"; break;
1744 case lir_checkcast: s = "checkcast"; break;
1745 case lir_store_check: s = "store_check"; break;
1746 // LIR_OpCompareAndSwap
1747 case lir_cas_long: s = "cas_long"; break;
1748 case lir_cas_obj: s = "cas_obj"; break;
1749 case lir_cas_int: s = "cas_int"; break;
1750 // LIR_OpProfileCall
1751 case lir_profile_call: s = "profile_call"; break;
1752 // LIR_OpProfileType
1753 case lir_profile_type: s = "profile_type"; break;
1754 // LIR_OpAssert
1755 #ifdef ASSERT
1756 case lir_assert: s = "assert"; break;
1757 #endif
1758 case lir_none: ShouldNotReachHere();break;
1759 default: s = "illegal_op"; break;
1760 }
1761 return s;
1762 }
1763
1764 // LIR_OpJavaCall
1765 void LIR_OpJavaCall::print_instr(outputStream* out) const {
1766 out->print("call: ");
1767 out->print("[addr: " INTPTR_FORMAT "]", p2i(address()));
1768 if (receiver()->is_valid()) {
1769 out->print(" [recv: "); receiver()->print(out); out->print("]");
1770 }
1771 if (result_opr()->is_valid()) {
1772 out->print(" [result: "); result_opr()->print(out); out->print("]");
1773 }
1959 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
1960 }
1961
1962
1963 void LIR_OpTypeCheck::print_instr(outputStream* out) const {
1964 object()->print(out); out->print(" ");
1965 if (code() == lir_store_check) {
1966 array()->print(out); out->print(" ");
1967 }
1968 if (code() != lir_store_check) {
1969 klass()->print_name_on(out); out->print(" ");
1970 if (fast_check()) out->print("fast_check ");
1971 }
1972 tmp1()->print(out); out->print(" ");
1973 tmp2()->print(out); out->print(" ");
1974 tmp3()->print(out); out->print(" ");
1975 result_opr()->print(out); out->print(" ");
1976 if (info_for_exception() != nullptr) out->print(" [bci:%d]", info_for_exception()->stack()->bci());
1977 }
1978
1979
1980 // LIR_Op3
1981 void LIR_Op3::print_instr(outputStream* out) const {
1982 in_opr1()->print(out); out->print(" ");
1983 in_opr2()->print(out); out->print(" ");
1984 in_opr3()->print(out); out->print(" ");
1985 result_opr()->print(out);
1986 }
1987
1988 // LIR_Op4
1989 void LIR_Op4::print_instr(outputStream* out) const {
1990 print_condition(out, condition()); out->print(" ");
1991 in_opr1()->print(out); out->print(" ");
1992 in_opr2()->print(out); out->print(" ");
1993 in_opr3()->print(out); out->print(" ");
1994 in_opr4()->print(out); out->print(" ");
1995 result_opr()->print(out);
1996 }
1997
1998 void LIR_OpLock::print_instr(outputStream* out) const {
2029 mdo()->print(out); out->print(" ");
2030 recv()->print(out); out->print(" ");
2031 tmp1()->print(out); out->print(" ");
2032 }
2033
2034 // LIR_OpProfileType
2035 void LIR_OpProfileType::print_instr(outputStream* out) const {
2036 out->print("exact = ");
2037 if (exact_klass() == nullptr) {
2038 out->print("unknown");
2039 } else {
2040 exact_klass()->print_name_on(out);
2041 }
2042 out->print(" current = "); ciTypeEntries::print_ciklass(out, current_klass());
2043 out->print(" ");
2044 mdp()->print(out); out->print(" ");
2045 obj()->print(out); out->print(" ");
2046 tmp()->print(out); out->print(" ");
2047 }
2048
2049 #endif // PRODUCT
2050
2051 // Implementation of LIR_InsertionBuffer
2052
2053 void LIR_InsertionBuffer::append(int index, LIR_Op* op) {
2054 assert(_index_and_count.length() % 2 == 0, "must have a count for each index");
2055
2056 int i = number_of_insertion_points() - 1;
2057 if (i < 0 || index_at(i) < index) {
2058 append_new(index, 1);
2059 } else {
2060 assert(index_at(i) == index, "can append LIR_Ops in ascending order only");
2061 assert(count_at(i) > 0, "check");
2062 set_count_at(i, count_at(i) + 1);
2063 }
2064 _ops.push(op);
2065
2066 DEBUG_ONLY(verify());
2067 }
2068
|
1 /*
2 * Copyright (c) 2000, 2026, 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 #include "c1/c1_CodeStubs.hpp"
26 #include "c1/c1_InstructionPrinter.hpp"
27 #include "c1/c1_LIR.hpp"
28 #include "c1/c1_LIRAssembler.hpp"
29 #include "c1/c1_ValueStack.hpp"
30 #include "ci/ciInlineKlass.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, bool need_null_check)
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 , _need_null_check(need_null_check)
307 {
308 if (code == lir_checkcast) {
309 assert(info_for_exception != nullptr, "checkcast throws exceptions");
310 } else if (code == lir_instanceof) {
311 assert(info_for_exception == nullptr, "instanceof throws no exceptions");
312 } else {
313 ShouldNotReachHere();
314 }
315 }
316
317
318
319 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)
320 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr)
321 , _object(object)
322 , _array(array)
323 , _klass(nullptr)
324 , _tmp1(tmp1)
325 , _tmp2(tmp2)
326 , _tmp3(tmp3)
327 , _info_for_patch(nullptr)
328 , _info_for_exception(info_for_exception)
329 , _stub(nullptr)
330 , _profiled_method(nullptr)
331 , _profiled_bci(-1)
332 , _should_profile(false)
333 , _fast_check(false)
334 , _need_null_check(true)
335 {
336 if (code == lir_store_check) {
337 _stub = new ArrayStoreExceptionStub(object, info_for_exception);
338 assert(info_for_exception != nullptr, "store_check throws exceptions");
339 } else {
340 ShouldNotReachHere();
341 }
342 }
343
344 LIR_OpFlattenedArrayCheck::LIR_OpFlattenedArrayCheck(LIR_Opr array, LIR_Opr tmp, CodeStub* stub)
345 : LIR_Op(lir_flat_array_check, LIR_OprFact::illegalOpr, nullptr)
346 , _array(array)
347 , _tmp(tmp)
348 , _stub(stub) {}
349
350
351 LIR_OpNullFreeArrayCheck::LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp)
352 : LIR_Op(lir_null_free_array_check, LIR_OprFact::illegalOpr, nullptr)
353 , _array(array)
354 , _tmp(tmp) {}
355
356
357 LIR_OpSubstitutabilityCheck::LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
358 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr tmp1, LIR_Opr tmp2,
359 CodeEmitInfo* info, CodeStub* stub)
360 : LIR_Op(lir_substitutability_check, result, info)
361 , _left(left)
362 , _right(right)
363 , _equal_result(equal_result)
364 , _not_equal_result(not_equal_result)
365 , _left_klass(left_klass)
366 , _right_klass(right_klass)
367 , _tmp1(tmp1)
368 , _tmp2(tmp2)
369 , _stub(stub) {}
370
371
372 LIR_OpArrayCopy::LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length,
373 LIR_Opr tmp, ciArrayKlass* expected_type, int flags, CodeEmitInfo* info)
374 : LIR_Op(lir_arraycopy, LIR_OprFact::illegalOpr, info)
375 , _src(src)
376 , _src_pos(src_pos)
377 , _dst(dst)
378 , _dst_pos(dst_pos)
379 , _length(length)
380 , _tmp(tmp)
381 , _expected_type(expected_type)
382 , _flags(flags) {
383 #if defined(X86) || defined(AARCH64) || defined(S390) || defined(RISCV64) || defined(PPC64)
384 if (expected_type != nullptr &&
385 ((flags & ~LIR_OpArrayCopy::get_initial_copy_flags()) == 0)) {
386 _stub = nullptr;
387 } else {
388 _stub = new ArrayCopyStub(this);
389 }
390 #else
425 // complete rework of LIR instruction visitor.
426 // The virtual call for each instruction type is replaced by a big
427 // switch that adds the operands for each instruction
428
429 void LIR_OpVisitState::visit(LIR_Op* op) {
430 // copy information from the LIR_Op
431 reset();
432 set_op(op);
433
434 switch (op->code()) {
435
436 // LIR_Op0
437 case lir_breakpoint: // result and info always invalid
438 case lir_membar: // result and info always invalid
439 case lir_membar_acquire: // result and info always invalid
440 case lir_membar_release: // result and info always invalid
441 case lir_membar_loadload: // result and info always invalid
442 case lir_membar_storestore: // result and info always invalid
443 case lir_membar_loadstore: // result and info always invalid
444 case lir_membar_storeload: // result and info always invalid
445 case lir_check_orig_pc: // result and info always invalid
446 case lir_on_spin_wait:
447 {
448 assert(op->as_Op0() != nullptr, "must be");
449 assert(op->_info == nullptr, "info not used by this instruction");
450 assert(op->_result->is_illegal(), "not used");
451 break;
452 }
453
454 case lir_nop: // may have info, result always invalid
455 case lir_std_entry: // may have result, info always invalid
456 case lir_osr_entry: // may have result, info always invalid
457 case lir_get_thread: // may have result, info always invalid
458 {
459 assert(op->as_Op0() != nullptr, "must be");
460 if (op->_info != nullptr) do_info(op->_info);
461 if (op->_result->is_valid()) do_output(op->_result);
462 break;
463 }
464
465
803
804
805 // LIR_OpLock
806 case lir_lock:
807 case lir_unlock: {
808 assert(op->as_OpLock() != nullptr, "must be");
809 LIR_OpLock* opLock = (LIR_OpLock*)op;
810
811 if (opLock->_info) do_info(opLock->_info);
812
813 // TODO: check if these operands really have to be temp
814 // (or if input is sufficient). This may have influence on the oop map!
815 assert(opLock->_lock->is_valid(), "used"); do_temp(opLock->_lock);
816 assert(opLock->_hdr->is_valid(), "used"); do_temp(opLock->_hdr);
817 assert(opLock->_obj->is_valid(), "used"); do_temp(opLock->_obj);
818
819 if (opLock->_scratch->is_valid()) do_temp(opLock->_scratch);
820 assert(opLock->_result->is_illegal(), "unused");
821
822 do_stub(opLock->_stub);
823 do_stub(opLock->_throw_ie_stub);
824
825 break;
826 }
827
828
829 // LIR_OpTypeCheck
830 case lir_instanceof:
831 case lir_checkcast:
832 case lir_store_check: {
833 assert(op->as_OpTypeCheck() != nullptr, "must be");
834 LIR_OpTypeCheck* opTypeCheck = (LIR_OpTypeCheck*)op;
835
836 if (opTypeCheck->_info_for_exception) do_info(opTypeCheck->_info_for_exception);
837 if (opTypeCheck->_info_for_patch) do_info(opTypeCheck->_info_for_patch);
838 if (opTypeCheck->_object->is_valid()) do_input(opTypeCheck->_object);
839 if (op->code() == lir_store_check && opTypeCheck->_object->is_valid()) {
840 do_temp(opTypeCheck->_object);
841 }
842 if (opTypeCheck->_array->is_valid()) do_input(opTypeCheck->_array);
843 if (opTypeCheck->_tmp1->is_valid()) do_temp(opTypeCheck->_tmp1);
844 if (opTypeCheck->_tmp2->is_valid()) do_temp(opTypeCheck->_tmp2);
845 if (opTypeCheck->_tmp3->is_valid()) do_temp(opTypeCheck->_tmp3);
846 if (opTypeCheck->_result->is_valid()) do_output(opTypeCheck->_result);
847 if (opTypeCheck->_stub != nullptr) do_stub(opTypeCheck->_stub);
848 break;
849 }
850
851 // LIR_OpFlattenedArrayCheck
852 case lir_flat_array_check: {
853 assert(op->as_OpFlattenedArrayCheck() != nullptr, "must be");
854 LIR_OpFlattenedArrayCheck* opFlattenedArrayCheck = (LIR_OpFlattenedArrayCheck*)op;
855
856 if (opFlattenedArrayCheck->_array->is_valid()) do_input(opFlattenedArrayCheck->_array);
857 if (opFlattenedArrayCheck->_tmp->is_valid()) do_temp(opFlattenedArrayCheck->_tmp);
858
859 do_stub(opFlattenedArrayCheck->_stub);
860
861 break;
862 }
863
864 // LIR_OpNullFreeArrayCheck
865 case lir_null_free_array_check: {
866 assert(op->as_OpNullFreeArrayCheck() != nullptr, "must be");
867 LIR_OpNullFreeArrayCheck* opNullFreeArrayCheck = (LIR_OpNullFreeArrayCheck*)op;
868
869 if (opNullFreeArrayCheck->_array->is_valid()) do_input(opNullFreeArrayCheck->_array);
870 if (opNullFreeArrayCheck->_tmp->is_valid()) do_temp(opNullFreeArrayCheck->_tmp);
871 break;
872 }
873
874 // LIR_OpSubstitutabilityCheck
875 case lir_substitutability_check: {
876 assert(op->as_OpSubstitutabilityCheck() != nullptr, "must be");
877 LIR_OpSubstitutabilityCheck* opSubstitutabilityCheck = (LIR_OpSubstitutabilityCheck*)op;
878 do_input(opSubstitutabilityCheck->_left);
879 do_temp (opSubstitutabilityCheck->_left);
880 do_input(opSubstitutabilityCheck->_right);
881 do_temp (opSubstitutabilityCheck->_right);
882 do_input(opSubstitutabilityCheck->_equal_result);
883 do_temp (opSubstitutabilityCheck->_equal_result);
884 do_input(opSubstitutabilityCheck->_not_equal_result);
885 do_temp (opSubstitutabilityCheck->_not_equal_result);
886 if (opSubstitutabilityCheck->_tmp1->is_valid()) do_temp(opSubstitutabilityCheck->_tmp1);
887 if (opSubstitutabilityCheck->_tmp2->is_valid()) do_temp(opSubstitutabilityCheck->_tmp2);
888 if (opSubstitutabilityCheck->_result->is_valid()) do_output(opSubstitutabilityCheck->_result);
889
890 do_info(opSubstitutabilityCheck->_info);
891 do_stub(opSubstitutabilityCheck->_stub);
892 break;
893 }
894
895 // LIR_OpCompareAndSwap
896 case lir_cas_long:
897 case lir_cas_obj:
898 case lir_cas_int: {
899 assert(op->as_OpCompareAndSwap() != nullptr, "must be");
900 LIR_OpCompareAndSwap* opCmpAndSwap = (LIR_OpCompareAndSwap*)op;
901
902 if (opCmpAndSwap->_info) do_info(opCmpAndSwap->_info);
903 assert(opCmpAndSwap->_addr->is_valid(), "used"); do_input(opCmpAndSwap->_addr);
904 do_temp(opCmpAndSwap->_addr);
905 assert(opCmpAndSwap->_cmp_value->is_valid(), "used"); do_input(opCmpAndSwap->_cmp_value);
906 do_temp(opCmpAndSwap->_cmp_value);
907 assert(opCmpAndSwap->_new_value->is_valid(), "used"); do_input(opCmpAndSwap->_new_value);
908 do_temp(opCmpAndSwap->_new_value);
909 if (opCmpAndSwap->_tmp1->is_valid()) do_temp(opCmpAndSwap->_tmp1);
910 if (opCmpAndSwap->_tmp2->is_valid()) do_temp(opCmpAndSwap->_tmp2);
911 if (opCmpAndSwap->_result->is_valid()) do_output(opCmpAndSwap->_result);
912
913 break;
914 }
952 case lir_profile_call: {
953 assert(op->as_OpProfileCall() != nullptr, "must be");
954 LIR_OpProfileCall* opProfileCall = (LIR_OpProfileCall*)op;
955
956 if (opProfileCall->_recv->is_valid()) do_temp(opProfileCall->_recv);
957 assert(opProfileCall->_mdo->is_valid(), "used"); do_temp(opProfileCall->_mdo);
958 assert(opProfileCall->_tmp1->is_valid(), "used"); do_temp(opProfileCall->_tmp1);
959 break;
960 }
961
962 // LIR_OpProfileType:
963 case lir_profile_type: {
964 assert(op->as_OpProfileType() != nullptr, "must be");
965 LIR_OpProfileType* opProfileType = (LIR_OpProfileType*)op;
966
967 do_input(opProfileType->_mdp); do_temp(opProfileType->_mdp);
968 do_input(opProfileType->_obj);
969 do_temp(opProfileType->_tmp);
970 break;
971 }
972
973 // LIR_OpProfileInlineType:
974 case lir_profile_inline_type: {
975 assert(op->as_OpProfileInlineType() != nullptr, "must be");
976 LIR_OpProfileInlineType* opProfileInlineType = (LIR_OpProfileInlineType*)op;
977
978 do_input(opProfileInlineType->_mdp); do_temp(opProfileInlineType->_mdp);
979 do_input(opProfileInlineType->_obj);
980 do_temp(opProfileInlineType->_tmp);
981 break;
982 }
983 default:
984 op->visit(this);
985 }
986 }
987
988 void LIR_Op::visit(LIR_OpVisitState* state) {
989 ShouldNotReachHere();
990 }
991
992 void LIR_OpVisitState::do_stub(CodeStub* stub) {
993 if (stub != nullptr) {
994 stub->visit(this);
995 }
996 }
997
998 XHandlers* LIR_OpVisitState::all_xhandler() {
999 XHandlers* result = nullptr;
1000
1001 int i;
1002 for (i = 0; i < info_count(); i++) {
1003 if (info_at(i)->exception_handlers() != nullptr) {
1036 !has_slow_case();
1037 }
1038 #endif
1039
1040 // LIR_OpReturn
1041 LIR_OpReturn::LIR_OpReturn(LIR_Opr opr) :
1042 LIR_Op1(lir_return, opr, (CodeEmitInfo*)nullptr /* info */),
1043 _stub(nullptr) {
1044 if (VM_Version::supports_stack_watermark_barrier()) {
1045 _stub = new C1SafepointPollStub();
1046 }
1047 }
1048
1049 //---------------------------------------------------
1050
1051
1052 void LIR_OpJavaCall::emit_code(LIR_Assembler* masm) {
1053 masm->emit_call(this);
1054 }
1055
1056 bool LIR_OpJavaCall::maybe_return_as_fields(ciInlineKlass** vk_ret) const {
1057 ciType* return_type = method()->return_type();
1058 if (InlineTypeReturnedAsFields) {
1059 if (return_type->is_inlinetype()) {
1060 ciInlineKlass* vk = return_type->as_inline_klass();
1061 if (vk->can_be_returned_as_fields()) {
1062 if (vk_ret != nullptr) {
1063 *vk_ret = vk;
1064 }
1065 return true;
1066 }
1067 } else if (return_type->is_instance_klass() &&
1068 (method()->is_method_handle_intrinsic() || !return_type->is_loaded() ||
1069 StressCallingConvention)) {
1070 // An inline type might be returned from the call but we don't know its type.
1071 // This can happen with method handle intrinsics or when the return type is
1072 // not loaded (method holder is not loaded or preload attribute is missing).
1073 // If an inline type is returned, we either get an oop to a buffer and nothing
1074 // needs to be done or one of the values being returned is the klass of the
1075 // inline type (RAX on x64, with LSB set to 1) and we need to allocate an inline
1076 // type instance of that type and initialize it with the fields values being
1077 // returned in other registers.
1078 return true;
1079 }
1080 }
1081 return false;
1082 }
1083
1084 void LIR_OpRTCall::emit_code(LIR_Assembler* masm) {
1085 masm->emit_rtcall(this);
1086 }
1087
1088 void LIR_OpLabel::emit_code(LIR_Assembler* masm) {
1089 masm->emit_opLabel(this);
1090 }
1091
1092 void LIR_OpArrayCopy::emit_code(LIR_Assembler* masm) {
1093 masm->emit_arraycopy(this);
1094 ArrayCopyStub* code_stub = stub();
1095 if (code_stub != nullptr) {
1096 masm->append_code_stub(code_stub);
1097 }
1098 }
1099
1100 void LIR_OpUpdateCRC32::emit_code(LIR_Assembler* masm) {
1101 masm->emit_updatecrc32(this);
1102 }
1103
1124 void LIR_OpConvert::emit_code(LIR_Assembler* masm) {
1125 masm->emit_opConvert(this);
1126 }
1127
1128 void LIR_Op2::emit_code(LIR_Assembler* masm) {
1129 masm->emit_op2(this);
1130 }
1131
1132 void LIR_OpAllocArray::emit_code(LIR_Assembler* masm) {
1133 masm->emit_alloc_array(this);
1134 masm->append_code_stub(stub());
1135 }
1136
1137 void LIR_OpTypeCheck::emit_code(LIR_Assembler* masm) {
1138 masm->emit_opTypeCheck(this);
1139 if (stub()) {
1140 masm->append_code_stub(stub());
1141 }
1142 }
1143
1144 void LIR_OpFlattenedArrayCheck::emit_code(LIR_Assembler* masm) {
1145 masm->emit_opFlattenedArrayCheck(this);
1146 if (stub() != nullptr) {
1147 masm->append_code_stub(stub());
1148 }
1149 }
1150
1151 void LIR_OpNullFreeArrayCheck::emit_code(LIR_Assembler* masm) {
1152 masm->emit_opNullFreeArrayCheck(this);
1153 }
1154
1155 void LIR_OpSubstitutabilityCheck::emit_code(LIR_Assembler* masm) {
1156 masm->emit_opSubstitutabilityCheck(this);
1157 if (stub() != nullptr) {
1158 masm->append_code_stub(stub());
1159 }
1160 }
1161
1162 void LIR_OpCompareAndSwap::emit_code(LIR_Assembler* masm) {
1163 masm->emit_compare_and_swap(this);
1164 }
1165
1166 void LIR_Op3::emit_code(LIR_Assembler* masm) {
1167 masm->emit_op3(this);
1168 }
1169
1170 void LIR_Op4::emit_code(LIR_Assembler* masm) {
1171 masm->emit_op4(this);
1172 }
1173
1174 void LIR_OpLock::emit_code(LIR_Assembler* masm) {
1175 masm->emit_lock(this);
1176 if (stub()) {
1177 masm->append_code_stub(stub());
1178 }
1179 if (throw_ie_stub()) {
1180 masm->append_code_stub(throw_ie_stub());
1181 }
1182 }
1183
1184 void LIR_OpLoadKlass::emit_code(LIR_Assembler* masm) {
1185 masm->emit_load_klass(this);
1186 }
1187
1188 #ifdef ASSERT
1189 void LIR_OpAssert::emit_code(LIR_Assembler* masm) {
1190 masm->emit_assert(this);
1191 }
1192 #endif
1193
1194 void LIR_OpProfileCall::emit_code(LIR_Assembler* masm) {
1195 masm->emit_profile_call(this);
1196 }
1197
1198 void LIR_OpProfileType::emit_code(LIR_Assembler* masm) {
1199 masm->emit_profile_type(this);
1200 }
1201
1202 void LIR_OpProfileInlineType::emit_code(LIR_Assembler* masm) {
1203 masm->emit_profile_inline_type(this);
1204 }
1205
1206 // LIR_List
1207 LIR_List::LIR_List(Compilation* compilation, BlockBegin* block)
1208 : _operations(8)
1209 , _compilation(compilation)
1210 #ifndef PRODUCT
1211 , _block(block)
1212 #endif
1213 #ifdef ASSERT
1214 , _file(nullptr)
1215 , _line(0)
1216 #endif
1217 #ifdef RISCV
1218 , _cmp_opr1(LIR_OprFact::illegalOpr)
1219 , _cmp_opr2(LIR_OprFact::illegalOpr)
1220 #endif
1221 { }
1222
1223
1224 #ifdef ASSERT
1225 void LIR_List::set_file_and_line(const char * file, int line) {
1461 reg,
1462 LIR_OprFact::address(addr),
1463 info));
1464 }
1465
1466 void LIR_List::allocate_object(LIR_Opr dst, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1467 int header_size, int object_size, LIR_Opr klass, bool init_check, CodeStub* stub) {
1468 append(new LIR_OpAllocObj(
1469 klass,
1470 dst,
1471 t1,
1472 t2,
1473 t3,
1474 t4,
1475 header_size,
1476 object_size,
1477 init_check,
1478 stub));
1479 }
1480
1481 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 always_slow_path) {
1482 append(new LIR_OpAllocArray(
1483 klass,
1484 len,
1485 dst,
1486 t1,
1487 t2,
1488 t3,
1489 t4,
1490 type,
1491 stub,
1492 zero_array,
1493 always_slow_path));
1494 }
1495
1496 void LIR_List::shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1497 append(new LIR_Op2(
1498 lir_shl,
1499 value,
1500 count,
1501 dst,
1502 tmp));
1503 }
1504
1505 void LIR_List::shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1506 append(new LIR_Op2(
1507 lir_shr,
1508 value,
1509 count,
1510 dst,
1511 tmp));
1512 }
1513
1514
1515 void LIR_List::unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1516 append(new LIR_Op2(
1517 lir_ushr,
1518 value,
1519 count,
1520 dst,
1521 tmp));
1522 }
1523
1524 void LIR_List::fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less) {
1525 append(new LIR_Op2(is_unordered_less ? lir_ucmp_fd2i : lir_cmp_fd2i,
1526 left,
1527 right,
1528 dst));
1529 }
1530
1531 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) {
1532 append(new LIR_OpLock(
1533 lir_lock,
1534 hdr,
1535 obj,
1536 lock,
1537 scratch,
1538 stub,
1539 info,
1540 throw_ie_stub));
1541 }
1542
1543 void LIR_List::unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub) {
1544 append(new LIR_OpLock(
1545 lir_unlock,
1546 hdr,
1547 obj,
1548 lock,
1549 scratch,
1550 stub,
1551 nullptr));
1552 }
1553
1554
1555 void check_LIR() {
1556 // cannot do the proper checking as PRODUCT and other modes return different results
1557 // guarantee(sizeof(LIR_Opr) == wordSize, "may not have a v-table");
1558 }
1559
1560
1561
1562 void LIR_List::checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
1563 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1564 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
1565 ciMethod* profiled_method, int profiled_bci, bool is_null_free) {
1566 // If klass is non-nullable, LIRGenerator::do_CheckCast has already performed null-check
1567 // on the object.
1568 bool need_null_check = !is_null_free;
1569 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_checkcast, result, object, klass,
1570 tmp1, tmp2, tmp3, fast_check, info_for_exception, info_for_patch, stub,
1571 need_null_check);
1572 if (profiled_method != nullptr && TypeProfileCasts) {
1573 c->set_profiled_method(profiled_method);
1574 c->set_profiled_bci(profiled_bci);
1575 c->set_should_profile(true);
1576 }
1577 append(c);
1578 }
1579
1580 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) {
1581 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_instanceof, result, object, klass, tmp1, tmp2, tmp3, fast_check, nullptr, info_for_patch, nullptr);
1582 if (profiled_method != nullptr && TypeProfileCasts) {
1583 c->set_profiled_method(profiled_method);
1584 c->set_profiled_bci(profiled_bci);
1585 c->set_should_profile(true);
1586 }
1587 append(c);
1588 }
1589
1590
1591 void LIR_List::store_check(LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3,
1594 if (profiled_method != nullptr && TypeProfileCasts) {
1595 c->set_profiled_method(profiled_method);
1596 c->set_profiled_bci(profiled_bci);
1597 c->set_should_profile(true);
1598 }
1599 append(c);
1600 }
1601
1602 void LIR_List::null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null) {
1603 if (deoptimize_on_null) {
1604 // Emit an explicit null check and deoptimize if opr is null
1605 CodeStub* deopt = new DeoptimizeStub(info, Deoptimization::Reason_null_check, Deoptimization::Action_none);
1606 cmp(lir_cond_equal, opr, LIR_OprFact::oopConst(nullptr));
1607 branch(lir_cond_equal, deopt);
1608 } else {
1609 // Emit an implicit null check
1610 append(new LIR_Op1(lir_null_check, opr, info));
1611 }
1612 }
1613
1614 void LIR_List::check_flat_array(LIR_Opr array, LIR_Opr tmp, CodeStub* stub) {
1615 LIR_OpFlattenedArrayCheck* c = new LIR_OpFlattenedArrayCheck(array, tmp, stub);
1616 append(c);
1617 }
1618
1619 void LIR_List::check_null_free_array(LIR_Opr array, LIR_Opr tmp) {
1620 LIR_OpNullFreeArrayCheck* c = new LIR_OpNullFreeArrayCheck(array, tmp);
1621 append(c);
1622 }
1623
1624 void LIR_List::substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
1625 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr tmp1, LIR_Opr tmp2,
1626 CodeEmitInfo* info, CodeStub* stub) {
1627 LIR_OpSubstitutabilityCheck* c = new LIR_OpSubstitutabilityCheck(result, left, right, equal_result, not_equal_result,
1628 left_klass, right_klass, tmp1, tmp2, info, stub);
1629 append(c);
1630 }
1631
1632 void LIR_List::cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1633 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1634 append(new LIR_OpCompareAndSwap(lir_cas_long, addr, cmp_value, new_value, t1, t2, result));
1635 }
1636
1637 void LIR_List::cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1638 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1639 append(new LIR_OpCompareAndSwap(lir_cas_obj, addr, cmp_value, new_value, t1, t2, result));
1640 }
1641
1642 void LIR_List::cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1643 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1644 append(new LIR_OpCompareAndSwap(lir_cas_int, addr, cmp_value, new_value, t1, t2, result));
1645 }
1646
1647
1648 #ifdef PRODUCT
1649
1650 void print_LIR(BlockList* blocks) {
1651 }
1827 }
1828
1829 const char * LIR_Op::name() const {
1830 const char* s = nullptr;
1831 switch(code()) {
1832 // LIR_Op0
1833 case lir_membar: s = "membar"; break;
1834 case lir_membar_acquire: s = "membar_acquire"; break;
1835 case lir_membar_release: s = "membar_release"; break;
1836 case lir_membar_loadload: s = "membar_loadload"; break;
1837 case lir_membar_storestore: s = "membar_storestore"; break;
1838 case lir_membar_loadstore: s = "membar_loadstore"; break;
1839 case lir_membar_storeload: s = "membar_storeload"; break;
1840 case lir_label: s = "label"; break;
1841 case lir_nop: s = "nop"; break;
1842 case lir_on_spin_wait: s = "on_spin_wait"; break;
1843 case lir_std_entry: s = "std_entry"; break;
1844 case lir_osr_entry: s = "osr_entry"; break;
1845 case lir_breakpoint: s = "breakpoint"; break;
1846 case lir_get_thread: s = "get_thread"; break;
1847 case lir_check_orig_pc: s = "check_orig_pc"; break;
1848 // LIR_Op1
1849 case lir_push: s = "push"; break;
1850 case lir_pop: s = "pop"; break;
1851 case lir_null_check: s = "null_check"; break;
1852 case lir_return: s = "return"; break;
1853 case lir_safepoint: s = "safepoint"; break;
1854 case lir_leal: s = "leal"; break;
1855 case lir_branch: s = "branch"; break;
1856 case lir_cond_float_branch: s = "flt_cond_br"; break;
1857 case lir_move: s = "move"; break;
1858 case lir_abs: s = "abs"; break;
1859 case lir_neg: s = "neg"; break;
1860 case lir_sqrt: s = "sqrt"; break;
1861 case lir_f2hf: s = "f2hf"; break;
1862 case lir_hf2f: s = "hf2f"; break;
1863 case lir_rtcall: s = "rtcall"; break;
1864 case lir_throw: s = "throw"; break;
1865 case lir_unwind: s = "unwind"; break;
1866 case lir_convert: s = "convert"; break;
1867 case lir_alloc_object: s = "alloc_obj"; break;
1891 case lir_fmad: s = "fmad"; break;
1892 case lir_fmaf: s = "fmaf"; break;
1893 // LIR_Op4
1894 case lir_cmove: s = "cmove"; break;
1895 // LIR_OpJavaCall
1896 case lir_static_call: s = "static"; break;
1897 case lir_optvirtual_call: s = "optvirtual"; break;
1898 case lir_icvirtual_call: s = "icvirtual"; break;
1899 case lir_dynamic_call: s = "dynamic"; break;
1900 // LIR_OpArrayCopy
1901 case lir_arraycopy: s = "arraycopy"; break;
1902 // LIR_OpUpdateCRC32
1903 case lir_updatecrc32: s = "updatecrc32"; break;
1904 // LIR_OpLock
1905 case lir_lock: s = "lock"; break;
1906 case lir_unlock: s = "unlock"; break;
1907 // LIR_OpTypeCheck
1908 case lir_instanceof: s = "instanceof"; break;
1909 case lir_checkcast: s = "checkcast"; break;
1910 case lir_store_check: s = "store_check"; break;
1911 // LIR_OpFlattenedArrayCheck
1912 case lir_flat_array_check: s = "flat_array_check"; break;
1913 // LIR_OpNullFreeArrayCheck
1914 case lir_null_free_array_check: s = "null_free_array_check"; break;
1915 // LIR_OpSubstitutabilityCheck
1916 case lir_substitutability_check: s = "substitutability_check"; break;
1917 // LIR_OpCompareAndSwap
1918 case lir_cas_long: s = "cas_long"; break;
1919 case lir_cas_obj: s = "cas_obj"; break;
1920 case lir_cas_int: s = "cas_int"; break;
1921 // LIR_OpProfileCall
1922 case lir_profile_call: s = "profile_call"; break;
1923 // LIR_OpProfileType
1924 case lir_profile_type: s = "profile_type"; break;
1925 // LIR_OpProfileInlineType
1926 case lir_profile_inline_type: s = "profile_inline_type"; break;
1927 // LIR_OpAssert
1928 #ifdef ASSERT
1929 case lir_assert: s = "assert"; break;
1930 #endif
1931 case lir_none: ShouldNotReachHere();break;
1932 default: s = "illegal_op"; break;
1933 }
1934 return s;
1935 }
1936
1937 // LIR_OpJavaCall
1938 void LIR_OpJavaCall::print_instr(outputStream* out) const {
1939 out->print("call: ");
1940 out->print("[addr: " INTPTR_FORMAT "]", p2i(address()));
1941 if (receiver()->is_valid()) {
1942 out->print(" [recv: "); receiver()->print(out); out->print("]");
1943 }
1944 if (result_opr()->is_valid()) {
1945 out->print(" [result: "); result_opr()->print(out); out->print("]");
1946 }
2132 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
2133 }
2134
2135
2136 void LIR_OpTypeCheck::print_instr(outputStream* out) const {
2137 object()->print(out); out->print(" ");
2138 if (code() == lir_store_check) {
2139 array()->print(out); out->print(" ");
2140 }
2141 if (code() != lir_store_check) {
2142 klass()->print_name_on(out); out->print(" ");
2143 if (fast_check()) out->print("fast_check ");
2144 }
2145 tmp1()->print(out); out->print(" ");
2146 tmp2()->print(out); out->print(" ");
2147 tmp3()->print(out); out->print(" ");
2148 result_opr()->print(out); out->print(" ");
2149 if (info_for_exception() != nullptr) out->print(" [bci:%d]", info_for_exception()->stack()->bci());
2150 }
2151
2152 void LIR_OpFlattenedArrayCheck::print_instr(outputStream* out) const {
2153 array()->print(out); out->print(" ");
2154 tmp()->print(out); out->print(" ");
2155 if (stub() != nullptr) {
2156 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
2157 }
2158 }
2159
2160 void LIR_OpNullFreeArrayCheck::print_instr(outputStream* out) const {
2161 array()->print(out); out->print(" ");
2162 tmp()->print(out); out->print(" ");
2163 }
2164
2165 void LIR_OpSubstitutabilityCheck::print_instr(outputStream* out) const {
2166 result_opr()->print(out); out->print(" ");
2167 left()->print(out); out->print(" ");
2168 right()->print(out); out->print(" ");
2169 equal_result()->print(out); out->print(" ");
2170 not_equal_result()->print(out); out->print(" ");
2171 if (left_klass() == nullptr) {
2172 out->print("unknown ");
2173 } else {
2174 left_klass()->print(out); out->print(" ");
2175 }
2176 if (right_klass() == nullptr) {
2177 out->print("unknown ");
2178 } else {
2179 right_klass()->print(out); out->print(" ");
2180 }
2181 tmp1()->print(out); out->print(" ");
2182 tmp2()->print(out); out->print(" ");
2183 if (stub() != nullptr) {
2184 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
2185 }
2186 }
2187
2188 // LIR_Op3
2189 void LIR_Op3::print_instr(outputStream* out) const {
2190 in_opr1()->print(out); out->print(" ");
2191 in_opr2()->print(out); out->print(" ");
2192 in_opr3()->print(out); out->print(" ");
2193 result_opr()->print(out);
2194 }
2195
2196 // LIR_Op4
2197 void LIR_Op4::print_instr(outputStream* out) const {
2198 print_condition(out, condition()); out->print(" ");
2199 in_opr1()->print(out); out->print(" ");
2200 in_opr2()->print(out); out->print(" ");
2201 in_opr3()->print(out); out->print(" ");
2202 in_opr4()->print(out); out->print(" ");
2203 result_opr()->print(out);
2204 }
2205
2206 void LIR_OpLock::print_instr(outputStream* out) const {
2237 mdo()->print(out); out->print(" ");
2238 recv()->print(out); out->print(" ");
2239 tmp1()->print(out); out->print(" ");
2240 }
2241
2242 // LIR_OpProfileType
2243 void LIR_OpProfileType::print_instr(outputStream* out) const {
2244 out->print("exact = ");
2245 if (exact_klass() == nullptr) {
2246 out->print("unknown");
2247 } else {
2248 exact_klass()->print_name_on(out);
2249 }
2250 out->print(" current = "); ciTypeEntries::print_ciklass(out, current_klass());
2251 out->print(" ");
2252 mdp()->print(out); out->print(" ");
2253 obj()->print(out); out->print(" ");
2254 tmp()->print(out); out->print(" ");
2255 }
2256
2257 // LIR_OpProfileInlineType
2258 void LIR_OpProfileInlineType::print_instr(outputStream* out) const {
2259 out->print(" flag = %x ", flag());
2260 mdp()->print(out); out->print(" ");
2261 obj()->print(out); out->print(" ");
2262 tmp()->print(out); out->print(" ");
2263 }
2264
2265 #endif // PRODUCT
2266
2267 // Implementation of LIR_InsertionBuffer
2268
2269 void LIR_InsertionBuffer::append(int index, LIR_Op* op) {
2270 assert(_index_and_count.length() % 2 == 0, "must have a count for each index");
2271
2272 int i = number_of_insertion_points() - 1;
2273 if (i < 0 || index_at(i) < index) {
2274 append_new(index, 1);
2275 } else {
2276 assert(index_at(i) == index, "can append LIR_Ops in ascending order only");
2277 assert(count_at(i) > 0, "check");
2278 set_count_at(i, count_at(i) + 1);
2279 }
2280 _ops.push(op);
2281
2282 DEBUG_ONLY(verify());
2283 }
2284
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