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,
1446 CodeEmitInfo* info_for_exception, ciMethod* profiled_method, int profiled_bci) {
1447 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_store_check, object, array, tmp1, tmp2, tmp3, info_for_exception);
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 value, LIR_Opr tmp, CodeStub* stub)
345 : LIR_Op(lir_flat_array_check, LIR_OprFact::illegalOpr, nullptr)
346 , _array(array)
347 , _value(value)
348 , _tmp(tmp)
349 , _stub(stub) {}
350
351
352 LIR_OpNullFreeArrayCheck::LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp)
353 : LIR_Op(lir_null_free_array_check, LIR_OprFact::illegalOpr, nullptr)
354 , _array(array)
355 , _tmp(tmp) {}
356
357
358 LIR_OpSubstitutabilityCheck::LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
359 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr tmp1, LIR_Opr tmp2,
360 CodeEmitInfo* info, CodeStub* stub)
361 : LIR_Op(lir_substitutability_check, result, info)
362 , _left(left)
363 , _right(right)
364 , _equal_result(equal_result)
365 , _not_equal_result(not_equal_result)
366 , _left_klass(left_klass)
367 , _right_klass(right_klass)
368 , _tmp1(tmp1)
369 , _tmp2(tmp2)
370 , _stub(stub) {}
371
372
373 LIR_OpArrayCopy::LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length,
374 LIR_Opr tmp, ciArrayKlass* expected_type, int flags, CodeEmitInfo* info)
375 : LIR_Op(lir_arraycopy, LIR_OprFact::illegalOpr, info)
376 , _src(src)
377 , _src_pos(src_pos)
378 , _dst(dst)
379 , _dst_pos(dst_pos)
380 , _length(length)
381 , _tmp(tmp)
382 , _expected_type(expected_type)
383 , _flags(flags) {
384 #if defined(X86) || defined(AARCH64) || defined(S390) || defined(RISCV64) || defined(PPC64)
385 if (expected_type != nullptr &&
386 ((flags & ~LIR_OpArrayCopy::get_initial_copy_flags()) == 0)) {
387 _stub = nullptr;
388 } else {
389 _stub = new ArrayCopyStub(this);
390 }
391 #else
426 // complete rework of LIR instruction visitor.
427 // The virtual call for each instruction type is replaced by a big
428 // switch that adds the operands for each instruction
429
430 void LIR_OpVisitState::visit(LIR_Op* op) {
431 // copy information from the LIR_Op
432 reset();
433 set_op(op);
434
435 switch (op->code()) {
436
437 // LIR_Op0
438 case lir_breakpoint: // result and info always invalid
439 case lir_membar: // result and info always invalid
440 case lir_membar_acquire: // result and info always invalid
441 case lir_membar_release: // result and info always invalid
442 case lir_membar_loadload: // result and info always invalid
443 case lir_membar_storestore: // result and info always invalid
444 case lir_membar_loadstore: // result and info always invalid
445 case lir_membar_storeload: // result and info always invalid
446 case lir_check_orig_pc: // result and info always invalid
447 case lir_on_spin_wait:
448 {
449 assert(op->as_Op0() != nullptr, "must be");
450 assert(op->_info == nullptr, "info not used by this instruction");
451 assert(op->_result->is_illegal(), "not used");
452 break;
453 }
454
455 case lir_nop: // may have info, result always invalid
456 case lir_std_entry: // may have result, info always invalid
457 case lir_osr_entry: // may have result, info always invalid
458 case lir_get_thread: // may have result, info always invalid
459 {
460 assert(op->as_Op0() != nullptr, "must be");
461 if (op->_info != nullptr) do_info(op->_info);
462 if (op->_result->is_valid()) do_output(op->_result);
463 break;
464 }
465
466
804
805
806 // LIR_OpLock
807 case lir_lock:
808 case lir_unlock: {
809 assert(op->as_OpLock() != nullptr, "must be");
810 LIR_OpLock* opLock = (LIR_OpLock*)op;
811
812 if (opLock->_info) do_info(opLock->_info);
813
814 // TODO: check if these operands really have to be temp
815 // (or if input is sufficient). This may have influence on the oop map!
816 assert(opLock->_lock->is_valid(), "used"); do_temp(opLock->_lock);
817 assert(opLock->_hdr->is_valid(), "used"); do_temp(opLock->_hdr);
818 assert(opLock->_obj->is_valid(), "used"); do_temp(opLock->_obj);
819
820 if (opLock->_scratch->is_valid()) do_temp(opLock->_scratch);
821 assert(opLock->_result->is_illegal(), "unused");
822
823 do_stub(opLock->_stub);
824 do_stub(opLock->_throw_ie_stub);
825
826 break;
827 }
828
829
830 // LIR_OpTypeCheck
831 case lir_instanceof:
832 case lir_checkcast:
833 case lir_store_check: {
834 assert(op->as_OpTypeCheck() != nullptr, "must be");
835 LIR_OpTypeCheck* opTypeCheck = (LIR_OpTypeCheck*)op;
836
837 if (opTypeCheck->_info_for_exception) do_info(opTypeCheck->_info_for_exception);
838 if (opTypeCheck->_info_for_patch) do_info(opTypeCheck->_info_for_patch);
839 if (opTypeCheck->_object->is_valid()) do_input(opTypeCheck->_object);
840 if (op->code() == lir_store_check && opTypeCheck->_object->is_valid()) {
841 do_temp(opTypeCheck->_object);
842 }
843 if (opTypeCheck->_array->is_valid()) do_input(opTypeCheck->_array);
844 if (opTypeCheck->_tmp1->is_valid()) do_temp(opTypeCheck->_tmp1);
845 if (opTypeCheck->_tmp2->is_valid()) do_temp(opTypeCheck->_tmp2);
846 if (opTypeCheck->_tmp3->is_valid()) do_temp(opTypeCheck->_tmp3);
847 if (opTypeCheck->_result->is_valid()) do_output(opTypeCheck->_result);
848 if (opTypeCheck->_stub != nullptr) do_stub(opTypeCheck->_stub);
849 break;
850 }
851
852 // LIR_OpFlattenedArrayCheck
853 case lir_flat_array_check: {
854 assert(op->as_OpFlattenedArrayCheck() != nullptr, "must be");
855 LIR_OpFlattenedArrayCheck* opFlattenedArrayCheck = (LIR_OpFlattenedArrayCheck*)op;
856
857 if (opFlattenedArrayCheck->_array->is_valid()) do_input(opFlattenedArrayCheck->_array);
858 if (opFlattenedArrayCheck->_value->is_valid()) do_input(opFlattenedArrayCheck->_value);
859 if (opFlattenedArrayCheck->_tmp->is_valid()) do_temp(opFlattenedArrayCheck->_tmp);
860
861 do_stub(opFlattenedArrayCheck->_stub);
862
863 break;
864 }
865
866 // LIR_OpNullFreeArrayCheck
867 case lir_null_free_array_check: {
868 assert(op->as_OpNullFreeArrayCheck() != nullptr, "must be");
869 LIR_OpNullFreeArrayCheck* opNullFreeArrayCheck = (LIR_OpNullFreeArrayCheck*)op;
870
871 if (opNullFreeArrayCheck->_array->is_valid()) do_input(opNullFreeArrayCheck->_array);
872 if (opNullFreeArrayCheck->_tmp->is_valid()) do_temp(opNullFreeArrayCheck->_tmp);
873 break;
874 }
875
876 // LIR_OpSubstitutabilityCheck
877 case lir_substitutability_check: {
878 assert(op->as_OpSubstitutabilityCheck() != nullptr, "must be");
879 LIR_OpSubstitutabilityCheck* opSubstitutabilityCheck = (LIR_OpSubstitutabilityCheck*)op;
880 do_input(opSubstitutabilityCheck->_left);
881 do_temp (opSubstitutabilityCheck->_left);
882 do_input(opSubstitutabilityCheck->_right);
883 do_temp (opSubstitutabilityCheck->_right);
884 do_input(opSubstitutabilityCheck->_equal_result);
885 do_temp (opSubstitutabilityCheck->_equal_result);
886 do_input(opSubstitutabilityCheck->_not_equal_result);
887 do_temp (opSubstitutabilityCheck->_not_equal_result);
888 if (opSubstitutabilityCheck->_tmp1->is_valid()) do_temp(opSubstitutabilityCheck->_tmp1);
889 if (opSubstitutabilityCheck->_tmp2->is_valid()) do_temp(opSubstitutabilityCheck->_tmp2);
890 if (opSubstitutabilityCheck->_result->is_valid()) do_output(opSubstitutabilityCheck->_result);
891
892 do_info(opSubstitutabilityCheck->_info);
893 do_stub(opSubstitutabilityCheck->_stub);
894 break;
895 }
896
897 // LIR_OpCompareAndSwap
898 case lir_cas_long:
899 case lir_cas_obj:
900 case lir_cas_int: {
901 assert(op->as_OpCompareAndSwap() != nullptr, "must be");
902 LIR_OpCompareAndSwap* opCmpAndSwap = (LIR_OpCompareAndSwap*)op;
903
904 if (opCmpAndSwap->_info) do_info(opCmpAndSwap->_info);
905 assert(opCmpAndSwap->_addr->is_valid(), "used"); do_input(opCmpAndSwap->_addr);
906 do_temp(opCmpAndSwap->_addr);
907 assert(opCmpAndSwap->_cmp_value->is_valid(), "used"); do_input(opCmpAndSwap->_cmp_value);
908 do_temp(opCmpAndSwap->_cmp_value);
909 assert(opCmpAndSwap->_new_value->is_valid(), "used"); do_input(opCmpAndSwap->_new_value);
910 do_temp(opCmpAndSwap->_new_value);
911 if (opCmpAndSwap->_tmp1->is_valid()) do_temp(opCmpAndSwap->_tmp1);
912 if (opCmpAndSwap->_tmp2->is_valid()) do_temp(opCmpAndSwap->_tmp2);
913 if (opCmpAndSwap->_result->is_valid()) do_output(opCmpAndSwap->_result);
914
915 break;
916 }
954 case lir_profile_call: {
955 assert(op->as_OpProfileCall() != nullptr, "must be");
956 LIR_OpProfileCall* opProfileCall = (LIR_OpProfileCall*)op;
957
958 if (opProfileCall->_recv->is_valid()) do_temp(opProfileCall->_recv);
959 assert(opProfileCall->_mdo->is_valid(), "used"); do_temp(opProfileCall->_mdo);
960 assert(opProfileCall->_tmp1->is_valid(), "used"); do_temp(opProfileCall->_tmp1);
961 break;
962 }
963
964 // LIR_OpProfileType:
965 case lir_profile_type: {
966 assert(op->as_OpProfileType() != nullptr, "must be");
967 LIR_OpProfileType* opProfileType = (LIR_OpProfileType*)op;
968
969 do_input(opProfileType->_mdp); do_temp(opProfileType->_mdp);
970 do_input(opProfileType->_obj);
971 do_temp(opProfileType->_tmp);
972 break;
973 }
974
975 // LIR_OpProfileInlineType:
976 case lir_profile_inline_type: {
977 assert(op->as_OpProfileInlineType() != nullptr, "must be");
978 LIR_OpProfileInlineType* opProfileInlineType = (LIR_OpProfileInlineType*)op;
979
980 do_input(opProfileInlineType->_mdp); do_temp(opProfileInlineType->_mdp);
981 do_input(opProfileInlineType->_obj);
982 do_temp(opProfileInlineType->_tmp);
983 break;
984 }
985 default:
986 op->visit(this);
987 }
988 }
989
990 void LIR_Op::visit(LIR_OpVisitState* state) {
991 ShouldNotReachHere();
992 }
993
994 void LIR_OpVisitState::do_stub(CodeStub* stub) {
995 if (stub != nullptr) {
996 stub->visit(this);
997 }
998 }
999
1000 XHandlers* LIR_OpVisitState::all_xhandler() {
1001 XHandlers* result = nullptr;
1002
1003 int i;
1004 for (i = 0; i < info_count(); i++) {
1005 if (info_at(i)->exception_handlers() != nullptr) {
1038 !has_slow_case();
1039 }
1040 #endif
1041
1042 // LIR_OpReturn
1043 LIR_OpReturn::LIR_OpReturn(LIR_Opr opr) :
1044 LIR_Op1(lir_return, opr, (CodeEmitInfo*)nullptr /* info */),
1045 _stub(nullptr) {
1046 if (VM_Version::supports_stack_watermark_barrier()) {
1047 _stub = new C1SafepointPollStub();
1048 }
1049 }
1050
1051 //---------------------------------------------------
1052
1053
1054 void LIR_OpJavaCall::emit_code(LIR_Assembler* masm) {
1055 masm->emit_call(this);
1056 }
1057
1058 bool LIR_OpJavaCall::maybe_return_as_fields(ciInlineKlass** vk_ret) const {
1059 ciType* return_type = method()->return_type();
1060 if (InlineTypeReturnedAsFields) {
1061 if (return_type->is_inlinetype()) {
1062 ciInlineKlass* vk = return_type->as_inline_klass();
1063 if (vk->can_be_returned_as_fields()) {
1064 if (vk_ret != nullptr) {
1065 *vk_ret = vk;
1066 }
1067 return true;
1068 }
1069 } else if (return_type->is_instance_klass() &&
1070 (method()->is_method_handle_intrinsic() || !return_type->is_loaded() ||
1071 StressCallingConvention)) {
1072 // An inline type might be returned from the call but we don't know its type.
1073 // This can happen with method handle intrinsics or when the return type is
1074 // not loaded (method holder is not loaded or preload attribute is missing).
1075 // If an inline type is returned, we either get an oop to a buffer and nothing
1076 // needs to be done or one of the values being returned is the klass of the
1077 // inline type (RAX on x64, with LSB set to 1) and we need to allocate an inline
1078 // type instance of that type and initialize it with the fields values being
1079 // returned in other registers.
1080 return true;
1081 }
1082 }
1083 return false;
1084 }
1085
1086 void LIR_OpRTCall::emit_code(LIR_Assembler* masm) {
1087 masm->emit_rtcall(this);
1088 }
1089
1090 void LIR_OpLabel::emit_code(LIR_Assembler* masm) {
1091 masm->emit_opLabel(this);
1092 }
1093
1094 void LIR_OpArrayCopy::emit_code(LIR_Assembler* masm) {
1095 masm->emit_arraycopy(this);
1096 ArrayCopyStub* code_stub = stub();
1097 if (code_stub != nullptr) {
1098 masm->append_code_stub(code_stub);
1099 }
1100 }
1101
1102 void LIR_OpUpdateCRC32::emit_code(LIR_Assembler* masm) {
1103 masm->emit_updatecrc32(this);
1104 }
1105
1126 void LIR_OpConvert::emit_code(LIR_Assembler* masm) {
1127 masm->emit_opConvert(this);
1128 }
1129
1130 void LIR_Op2::emit_code(LIR_Assembler* masm) {
1131 masm->emit_op2(this);
1132 }
1133
1134 void LIR_OpAllocArray::emit_code(LIR_Assembler* masm) {
1135 masm->emit_alloc_array(this);
1136 masm->append_code_stub(stub());
1137 }
1138
1139 void LIR_OpTypeCheck::emit_code(LIR_Assembler* masm) {
1140 masm->emit_opTypeCheck(this);
1141 if (stub()) {
1142 masm->append_code_stub(stub());
1143 }
1144 }
1145
1146 void LIR_OpFlattenedArrayCheck::emit_code(LIR_Assembler* masm) {
1147 masm->emit_opFlattenedArrayCheck(this);
1148 if (stub() != nullptr) {
1149 masm->append_code_stub(stub());
1150 }
1151 }
1152
1153 void LIR_OpNullFreeArrayCheck::emit_code(LIR_Assembler* masm) {
1154 masm->emit_opNullFreeArrayCheck(this);
1155 }
1156
1157 void LIR_OpSubstitutabilityCheck::emit_code(LIR_Assembler* masm) {
1158 masm->emit_opSubstitutabilityCheck(this);
1159 if (stub() != nullptr) {
1160 masm->append_code_stub(stub());
1161 }
1162 }
1163
1164 void LIR_OpCompareAndSwap::emit_code(LIR_Assembler* masm) {
1165 masm->emit_compare_and_swap(this);
1166 }
1167
1168 void LIR_Op3::emit_code(LIR_Assembler* masm) {
1169 masm->emit_op3(this);
1170 }
1171
1172 void LIR_Op4::emit_code(LIR_Assembler* masm) {
1173 masm->emit_op4(this);
1174 }
1175
1176 void LIR_OpLock::emit_code(LIR_Assembler* masm) {
1177 masm->emit_lock(this);
1178 if (stub()) {
1179 masm->append_code_stub(stub());
1180 }
1181 if (throw_ie_stub()) {
1182 masm->append_code_stub(throw_ie_stub());
1183 }
1184 }
1185
1186 void LIR_OpLoadKlass::emit_code(LIR_Assembler* masm) {
1187 masm->emit_load_klass(this);
1188 }
1189
1190 #ifdef ASSERT
1191 void LIR_OpAssert::emit_code(LIR_Assembler* masm) {
1192 masm->emit_assert(this);
1193 }
1194 #endif
1195
1196 void LIR_OpProfileCall::emit_code(LIR_Assembler* masm) {
1197 masm->emit_profile_call(this);
1198 }
1199
1200 void LIR_OpProfileType::emit_code(LIR_Assembler* masm) {
1201 masm->emit_profile_type(this);
1202 }
1203
1204 void LIR_OpProfileInlineType::emit_code(LIR_Assembler* masm) {
1205 masm->emit_profile_inline_type(this);
1206 }
1207
1208 // LIR_List
1209 LIR_List::LIR_List(Compilation* compilation, BlockBegin* block)
1210 : _operations(8)
1211 , _compilation(compilation)
1212 #ifndef PRODUCT
1213 , _block(block)
1214 #endif
1215 #ifdef ASSERT
1216 , _file(nullptr)
1217 , _line(0)
1218 #endif
1219 #ifdef RISCV
1220 , _cmp_opr1(LIR_OprFact::illegalOpr)
1221 , _cmp_opr2(LIR_OprFact::illegalOpr)
1222 #endif
1223 { }
1224
1225
1226 #ifdef ASSERT
1227 void LIR_List::set_file_and_line(const char * file, int line) {
1463 reg,
1464 LIR_OprFact::address(addr),
1465 info));
1466 }
1467
1468 void LIR_List::allocate_object(LIR_Opr dst, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1469 int header_size, int object_size, LIR_Opr klass, bool init_check, CodeStub* stub) {
1470 append(new LIR_OpAllocObj(
1471 klass,
1472 dst,
1473 t1,
1474 t2,
1475 t3,
1476 t4,
1477 header_size,
1478 object_size,
1479 init_check,
1480 stub));
1481 }
1482
1483 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) {
1484 append(new LIR_OpAllocArray(
1485 klass,
1486 len,
1487 dst,
1488 t1,
1489 t2,
1490 t3,
1491 t4,
1492 type,
1493 stub,
1494 zero_array,
1495 always_slow_path));
1496 }
1497
1498 void LIR_List::shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1499 append(new LIR_Op2(
1500 lir_shl,
1501 value,
1502 count,
1503 dst,
1504 tmp));
1505 }
1506
1507 void LIR_List::shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1508 append(new LIR_Op2(
1509 lir_shr,
1510 value,
1511 count,
1512 dst,
1513 tmp));
1514 }
1515
1516
1517 void LIR_List::unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp) {
1518 append(new LIR_Op2(
1519 lir_ushr,
1520 value,
1521 count,
1522 dst,
1523 tmp));
1524 }
1525
1526 void LIR_List::fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less) {
1527 append(new LIR_Op2(is_unordered_less ? lir_ucmp_fd2i : lir_cmp_fd2i,
1528 left,
1529 right,
1530 dst));
1531 }
1532
1533 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) {
1534 append(new LIR_OpLock(
1535 lir_lock,
1536 hdr,
1537 obj,
1538 lock,
1539 scratch,
1540 stub,
1541 info,
1542 throw_ie_stub));
1543 }
1544
1545 void LIR_List::unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub) {
1546 append(new LIR_OpLock(
1547 lir_unlock,
1548 hdr,
1549 obj,
1550 lock,
1551 scratch,
1552 stub,
1553 nullptr));
1554 }
1555
1556
1557 void check_LIR() {
1558 // cannot do the proper checking as PRODUCT and other modes return different results
1559 // guarantee(sizeof(LIR_Opr) == wordSize, "may not have a v-table");
1560 }
1561
1562
1563
1564 void LIR_List::checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
1565 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1566 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
1567 ciMethod* profiled_method, int profiled_bci, bool is_null_free) {
1568 // If klass is non-nullable, LIRGenerator::do_CheckCast has already performed null-check
1569 // on the object.
1570 bool need_null_check = !is_null_free;
1571 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_checkcast, result, object, klass,
1572 tmp1, tmp2, tmp3, fast_check, info_for_exception, info_for_patch, stub,
1573 need_null_check);
1574 if (profiled_method != nullptr && TypeProfileCasts) {
1575 c->set_profiled_method(profiled_method);
1576 c->set_profiled_bci(profiled_bci);
1577 c->set_should_profile(true);
1578 }
1579 append(c);
1580 }
1581
1582 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) {
1583 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_instanceof, result, object, klass, tmp1, tmp2, tmp3, fast_check, nullptr, info_for_patch, nullptr);
1584 if (profiled_method != nullptr && TypeProfileCasts) {
1585 c->set_profiled_method(profiled_method);
1586 c->set_profiled_bci(profiled_bci);
1587 c->set_should_profile(true);
1588 }
1589 append(c);
1590 }
1591
1592
1593 void LIR_List::store_check(LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3,
1594 CodeEmitInfo* info_for_exception, ciMethod* profiled_method, int profiled_bci) {
1595 // FIXME -- if the types of the array and/or the object are known statically, we can avoid loading the klass
1596 LIR_OpTypeCheck* c = new LIR_OpTypeCheck(lir_store_check, object, array, tmp1, tmp2, tmp3, info_for_exception);
1597 if (profiled_method != nullptr && TypeProfileCasts) {
1598 c->set_profiled_method(profiled_method);
1599 c->set_profiled_bci(profiled_bci);
1600 c->set_should_profile(true);
1601 }
1602 append(c);
1603 }
1604
1605 void LIR_List::null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null) {
1606 if (deoptimize_on_null) {
1607 // Emit an explicit null check and deoptimize if opr is null
1608 CodeStub* deopt = new DeoptimizeStub(info, Deoptimization::Reason_null_check, Deoptimization::Action_none);
1609 cmp(lir_cond_equal, opr, LIR_OprFact::oopConst(nullptr));
1610 branch(lir_cond_equal, deopt);
1611 } else {
1612 // Emit an implicit null check
1613 append(new LIR_Op1(lir_null_check, opr, info));
1614 }
1615 }
1616
1617 void LIR_List::check_flat_array(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub) {
1618 LIR_OpFlattenedArrayCheck* c = new LIR_OpFlattenedArrayCheck(array, value, tmp, stub);
1619 append(c);
1620 }
1621
1622 void LIR_List::check_null_free_array(LIR_Opr array, LIR_Opr tmp) {
1623 LIR_OpNullFreeArrayCheck* c = new LIR_OpNullFreeArrayCheck(array, tmp);
1624 append(c);
1625 }
1626
1627 void LIR_List::substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
1628 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr tmp1, LIR_Opr tmp2,
1629 CodeEmitInfo* info, CodeStub* stub) {
1630 LIR_OpSubstitutabilityCheck* c = new LIR_OpSubstitutabilityCheck(result, left, right, equal_result, not_equal_result,
1631 left_klass, right_klass, tmp1, tmp2, info, stub);
1632 append(c);
1633 }
1634
1635 void LIR_List::cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1636 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1637 append(new LIR_OpCompareAndSwap(lir_cas_long, addr, cmp_value, new_value, t1, t2, result));
1638 }
1639
1640 void LIR_List::cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1641 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1642 append(new LIR_OpCompareAndSwap(lir_cas_obj, addr, cmp_value, new_value, t1, t2, result));
1643 }
1644
1645 void LIR_List::cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1646 LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
1647 append(new LIR_OpCompareAndSwap(lir_cas_int, addr, cmp_value, new_value, t1, t2, result));
1648 }
1649
1650
1651 #ifdef PRODUCT
1652
1653 void print_LIR(BlockList* blocks) {
1654 }
1830 }
1831
1832 const char * LIR_Op::name() const {
1833 const char* s = nullptr;
1834 switch(code()) {
1835 // LIR_Op0
1836 case lir_membar: s = "membar"; break;
1837 case lir_membar_acquire: s = "membar_acquire"; break;
1838 case lir_membar_release: s = "membar_release"; break;
1839 case lir_membar_loadload: s = "membar_loadload"; break;
1840 case lir_membar_storestore: s = "membar_storestore"; break;
1841 case lir_membar_loadstore: s = "membar_loadstore"; break;
1842 case lir_membar_storeload: s = "membar_storeload"; break;
1843 case lir_label: s = "label"; break;
1844 case lir_nop: s = "nop"; break;
1845 case lir_on_spin_wait: s = "on_spin_wait"; break;
1846 case lir_std_entry: s = "std_entry"; break;
1847 case lir_osr_entry: s = "osr_entry"; break;
1848 case lir_breakpoint: s = "breakpoint"; break;
1849 case lir_get_thread: s = "get_thread"; break;
1850 case lir_check_orig_pc: s = "check_orig_pc"; break;
1851 // LIR_Op1
1852 case lir_push: s = "push"; break;
1853 case lir_pop: s = "pop"; break;
1854 case lir_null_check: s = "null_check"; break;
1855 case lir_return: s = "return"; break;
1856 case lir_safepoint: s = "safepoint"; break;
1857 case lir_leal: s = "leal"; break;
1858 case lir_branch: s = "branch"; break;
1859 case lir_cond_float_branch: s = "flt_cond_br"; break;
1860 case lir_move: s = "move"; break;
1861 case lir_abs: s = "abs"; break;
1862 case lir_neg: s = "neg"; break;
1863 case lir_sqrt: s = "sqrt"; break;
1864 case lir_f2hf: s = "f2hf"; break;
1865 case lir_hf2f: s = "hf2f"; break;
1866 case lir_rtcall: s = "rtcall"; break;
1867 case lir_throw: s = "throw"; break;
1868 case lir_unwind: s = "unwind"; break;
1869 case lir_convert: s = "convert"; break;
1870 case lir_alloc_object: s = "alloc_obj"; break;
1894 case lir_fmad: s = "fmad"; break;
1895 case lir_fmaf: s = "fmaf"; break;
1896 // LIR_Op4
1897 case lir_cmove: s = "cmove"; break;
1898 // LIR_OpJavaCall
1899 case lir_static_call: s = "static"; break;
1900 case lir_optvirtual_call: s = "optvirtual"; break;
1901 case lir_icvirtual_call: s = "icvirtual"; break;
1902 case lir_dynamic_call: s = "dynamic"; break;
1903 // LIR_OpArrayCopy
1904 case lir_arraycopy: s = "arraycopy"; break;
1905 // LIR_OpUpdateCRC32
1906 case lir_updatecrc32: s = "updatecrc32"; break;
1907 // LIR_OpLock
1908 case lir_lock: s = "lock"; break;
1909 case lir_unlock: s = "unlock"; break;
1910 // LIR_OpTypeCheck
1911 case lir_instanceof: s = "instanceof"; break;
1912 case lir_checkcast: s = "checkcast"; break;
1913 case lir_store_check: s = "store_check"; break;
1914 // LIR_OpFlattenedArrayCheck
1915 case lir_flat_array_check: s = "flat_array_check"; break;
1916 // LIR_OpNullFreeArrayCheck
1917 case lir_null_free_array_check: s = "null_free_array_check"; break;
1918 // LIR_OpSubstitutabilityCheck
1919 case lir_substitutability_check: s = "substitutability_check"; break;
1920 // LIR_OpCompareAndSwap
1921 case lir_cas_long: s = "cas_long"; break;
1922 case lir_cas_obj: s = "cas_obj"; break;
1923 case lir_cas_int: s = "cas_int"; break;
1924 // LIR_OpProfileCall
1925 case lir_profile_call: s = "profile_call"; break;
1926 // LIR_OpProfileType
1927 case lir_profile_type: s = "profile_type"; break;
1928 // LIR_OpProfileInlineType
1929 case lir_profile_inline_type: s = "profile_inline_type"; break;
1930 // LIR_OpAssert
1931 #ifdef ASSERT
1932 case lir_assert: s = "assert"; break;
1933 #endif
1934 case lir_none: ShouldNotReachHere();break;
1935 default: s = "illegal_op"; break;
1936 }
1937 return s;
1938 }
1939
1940 // LIR_OpJavaCall
1941 void LIR_OpJavaCall::print_instr(outputStream* out) const {
1942 out->print("call: ");
1943 out->print("[addr: " INTPTR_FORMAT "]", p2i(address()));
1944 if (receiver()->is_valid()) {
1945 out->print(" [recv: "); receiver()->print(out); out->print("]");
1946 }
1947 if (result_opr()->is_valid()) {
1948 out->print(" [result: "); result_opr()->print(out); out->print("]");
1949 }
2135 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
2136 }
2137
2138
2139 void LIR_OpTypeCheck::print_instr(outputStream* out) const {
2140 object()->print(out); out->print(" ");
2141 if (code() == lir_store_check) {
2142 array()->print(out); out->print(" ");
2143 }
2144 if (code() != lir_store_check) {
2145 klass()->print_name_on(out); out->print(" ");
2146 if (fast_check()) out->print("fast_check ");
2147 }
2148 tmp1()->print(out); out->print(" ");
2149 tmp2()->print(out); out->print(" ");
2150 tmp3()->print(out); out->print(" ");
2151 result_opr()->print(out); out->print(" ");
2152 if (info_for_exception() != nullptr) out->print(" [bci:%d]", info_for_exception()->stack()->bci());
2153 }
2154
2155 void LIR_OpFlattenedArrayCheck::print_instr(outputStream* out) const {
2156 array()->print(out); out->print(" ");
2157 value()->print(out); out->print(" ");
2158 tmp()->print(out); out->print(" ");
2159 if (stub() != nullptr) {
2160 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
2161 }
2162 }
2163
2164 void LIR_OpNullFreeArrayCheck::print_instr(outputStream* out) const {
2165 array()->print(out); out->print(" ");
2166 tmp()->print(out); out->print(" ");
2167 }
2168
2169 void LIR_OpSubstitutabilityCheck::print_instr(outputStream* out) const {
2170 result_opr()->print(out); out->print(" ");
2171 left()->print(out); out->print(" ");
2172 right()->print(out); out->print(" ");
2173 equal_result()->print(out); out->print(" ");
2174 not_equal_result()->print(out); out->print(" ");
2175 if (left_klass() == nullptr) {
2176 out->print("unknown ");
2177 } else {
2178 left_klass()->print(out); out->print(" ");
2179 }
2180 if (right_klass() == nullptr) {
2181 out->print("unknown ");
2182 } else {
2183 right_klass()->print(out); out->print(" ");
2184 }
2185 tmp1()->print(out); out->print(" ");
2186 tmp2()->print(out); out->print(" ");
2187 if (stub() != nullptr) {
2188 out->print("[label:" INTPTR_FORMAT "]", p2i(stub()->entry()));
2189 }
2190 }
2191
2192 // LIR_Op3
2193 void LIR_Op3::print_instr(outputStream* out) const {
2194 in_opr1()->print(out); out->print(" ");
2195 in_opr2()->print(out); out->print(" ");
2196 in_opr3()->print(out); out->print(" ");
2197 result_opr()->print(out);
2198 }
2199
2200 // LIR_Op4
2201 void LIR_Op4::print_instr(outputStream* out) const {
2202 print_condition(out, condition()); out->print(" ");
2203 in_opr1()->print(out); out->print(" ");
2204 in_opr2()->print(out); out->print(" ");
2205 in_opr3()->print(out); out->print(" ");
2206 in_opr4()->print(out); out->print(" ");
2207 result_opr()->print(out);
2208 }
2209
2210 void LIR_OpLock::print_instr(outputStream* out) const {
2241 mdo()->print(out); out->print(" ");
2242 recv()->print(out); out->print(" ");
2243 tmp1()->print(out); out->print(" ");
2244 }
2245
2246 // LIR_OpProfileType
2247 void LIR_OpProfileType::print_instr(outputStream* out) const {
2248 out->print("exact = ");
2249 if (exact_klass() == nullptr) {
2250 out->print("unknown");
2251 } else {
2252 exact_klass()->print_name_on(out);
2253 }
2254 out->print(" current = "); ciTypeEntries::print_ciklass(out, current_klass());
2255 out->print(" ");
2256 mdp()->print(out); out->print(" ");
2257 obj()->print(out); out->print(" ");
2258 tmp()->print(out); out->print(" ");
2259 }
2260
2261 // LIR_OpProfileInlineType
2262 void LIR_OpProfileInlineType::print_instr(outputStream* out) const {
2263 out->print(" flag = %x ", flag());
2264 mdp()->print(out); out->print(" ");
2265 obj()->print(out); out->print(" ");
2266 tmp()->print(out); out->print(" ");
2267 }
2268
2269 #endif // PRODUCT
2270
2271 // Implementation of LIR_InsertionBuffer
2272
2273 void LIR_InsertionBuffer::append(int index, LIR_Op* op) {
2274 assert(_index_and_count.length() % 2 == 0, "must have a count for each index");
2275
2276 int i = number_of_insertion_points() - 1;
2277 if (i < 0 || index_at(i) < index) {
2278 append_new(index, 1);
2279 } else {
2280 assert(index_at(i) == index, "can append LIR_Ops in ascending order only");
2281 assert(count_at(i) > 0, "check");
2282 set_count_at(i, count_at(i) + 1);
2283 }
2284 _ops.push(op);
2285
2286 DEBUG_ONLY(verify());
2287 }
2288
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