1 /*
2 * Copyright (c) 2008, 2018, 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 "precompiled.hpp"
26 #include "asm/macroAssembler.inline.hpp"
27 #include "c1/c1_Compilation.hpp"
28 #include "c1/c1_FrameMap.hpp"
29 #include "c1/c1_Instruction.hpp"
30 #include "c1/c1_LIRAssembler.hpp"
31 #include "c1/c1_LIRGenerator.hpp"
32 #include "c1/c1_Runtime1.hpp"
33 #include "c1/c1_ValueStack.hpp"
34 #include "ci/ciArray.hpp"
35 #include "ci/ciObjArrayKlass.hpp"
36 #include "ci/ciTypeArrayKlass.hpp"
37 #include "ci/ciUtilities.hpp"
38 #include "gc/shared/c1/barrierSetC1.hpp"
39 #include "gc/shared/cardTable.hpp"
40 #include "gc/shared/cardTableBarrierSet.hpp"
41 #include "runtime/sharedRuntime.hpp"
42 #include "runtime/stubRoutines.hpp"
43 #include "vmreg_arm.inline.hpp"
44
45 #ifdef ASSERT
46 #define __ gen()->lir(__FILE__, __LINE__)->
47 #else
48 #define __ gen()->lir()->
49 #endif
50
51 void LIRItem::load_byte_item() {
52 load_item();
53 }
54
55 void LIRItem::load_nonconstant() {
56 LIR_Opr r = value()->operand();
57 if (_gen->can_inline_as_constant(value())) {
58 if (!r->is_constant()) {
59 r = LIR_OprFact::value_type(value()->type());
60 }
61 _result = r;
62 } else {
63 load_item();
64 }
65 }
66
67 //--------------------------------------------------------------
68 // LIRGenerator
69 //--------------------------------------------------------------
70
71
72 LIR_Opr LIRGenerator::exceptionOopOpr() {
73 return FrameMap::Exception_oop_opr;
74 }
75
76 LIR_Opr LIRGenerator::exceptionPcOpr() {
77 return FrameMap::Exception_pc_opr;
78 }
79
80 LIR_Opr LIRGenerator::syncLockOpr() {
81 return new_register(T_INT);
82 }
83
84 LIR_Opr LIRGenerator::syncTempOpr() {
85 return new_register(T_OBJECT);
86 }
87
88 LIR_Opr LIRGenerator::getThreadTemp() {
89 return LIR_OprFact::illegalOpr;
90 }
91
92 LIR_Opr LIRGenerator::atomicLockOpr() {
93 return LIR_OprFact::illegalOpr;
94 }
95
96 LIR_Opr LIRGenerator::result_register_for(ValueType* type, bool callee) {
97 LIR_Opr opr;
98 switch (type->tag()) {
99 case intTag: opr = FrameMap::Int_result_opr; break;
100 case objectTag: opr = FrameMap::Object_result_opr; break;
101 case longTag: opr = FrameMap::Long_result_opr; break;
102 case floatTag: opr = FrameMap::Float_result_opr; break;
103 case doubleTag: opr = FrameMap::Double_result_opr; break;
104 case addressTag:
105 default: ShouldNotReachHere(); return LIR_OprFact::illegalOpr;
106 }
107 assert(opr->type_field() == as_OprType(as_BasicType(type)), "type mismatch");
108 return opr;
109 }
110
111
112 LIR_Opr LIRGenerator::rlock_byte(BasicType type) {
113 return new_register(T_INT);
114 }
115
116
117 //--------- loading items into registers --------------------------------
118
119
120 bool LIRGenerator::can_store_as_constant(Value v, BasicType type) const {
121 return false;
122 }
123
124
125 bool LIRGenerator::can_inline_as_constant(Value v) const {
126 if (v->type()->as_IntConstant() != NULL) {
127 return Assembler::is_arith_imm_in_range(v->type()->as_IntConstant()->value());
128 } else if (v->type()->as_ObjectConstant() != NULL) {
129 return v->type()->as_ObjectConstant()->value()->is_null_object();
130 } else if (v->type()->as_FloatConstant() != NULL) {
131 return v->type()->as_FloatConstant()->value() == 0.0f;
132 } else if (v->type()->as_DoubleConstant() != NULL) {
133 return v->type()->as_DoubleConstant()->value() == 0.0;
134 }
135 return false;
136 }
137
138
139 bool LIRGenerator::can_inline_as_constant(LIR_Const* c) const {
140 ShouldNotCallThis(); // Not used on ARM
141 return false;
142 }
143
144
145
146
147 LIR_Opr LIRGenerator::safepoint_poll_register() {
148 return LIR_OprFact::illegalOpr;
149 }
150
151
152 static LIR_Opr make_constant(BasicType type, jlong c) {
153 switch (type) {
154 case T_ADDRESS:
155 case T_OBJECT: return LIR_OprFact::intptrConst(c);
156 case T_LONG: return LIR_OprFact::longConst(c);
157 case T_INT: return LIR_OprFact::intConst(c);
158 default: ShouldNotReachHere();
159 return LIR_OprFact::intConst(-1);
160 }
161 }
162
163
164
165 void LIRGenerator::add_large_constant(LIR_Opr src, int c, LIR_Opr dest) {
166 assert(c != 0, "must be");
167 // Find first non-zero bit
168 int shift = 0;
169 while ((c & (3 << shift)) == 0) {
170 shift += 2;
171 }
172 // Add the least significant part of the constant
173 int mask = 0xff << shift;
174 __ add(src, LIR_OprFact::intConst(c & mask), dest);
175 // Add up to 3 other parts of the constant;
176 // each of them can be represented as rotated_imm
177 if (c & (mask << 8)) {
178 __ add(dest, LIR_OprFact::intConst(c & (mask << 8)), dest);
179 }
180 if (c & (mask << 16)) {
181 __ add(dest, LIR_OprFact::intConst(c & (mask << 16)), dest);
182 }
183 if (c & (mask << 24)) {
184 __ add(dest, LIR_OprFact::intConst(c & (mask << 24)), dest);
185 }
186 }
187
188 static LIR_Address* make_address(LIR_Opr base, LIR_Opr index, LIR_Address::Scale scale, BasicType type) {
189 return new LIR_Address(base, index, scale, 0, type);
190 }
191
192 LIR_Address* LIRGenerator::generate_address(LIR_Opr base, LIR_Opr index,
193 int shift, int disp, BasicType type) {
194 assert(base->is_register(), "must be");
195
196 if (index->is_constant()) {
197 disp += index->as_constant_ptr()->as_jint() << shift;
198 index = LIR_OprFact::illegalOpr;
199 }
200
201 if (base->type() == T_LONG) {
202 LIR_Opr tmp = new_register(T_INT);
203 __ convert(Bytecodes::_l2i, base, tmp);
204 base = tmp;
205 }
206 if (index != LIR_OprFact::illegalOpr && index->type() == T_LONG) {
207 LIR_Opr tmp = new_register(T_INT);
208 __ convert(Bytecodes::_l2i, index, tmp);
209 index = tmp;
210 }
211 // At this point base and index should be all ints and not constants
212 assert(base->is_single_cpu() && !base->is_constant(), "base should be an non-constant int");
213 assert(index->is_illegal() || (index->type() == T_INT && !index->is_constant()), "index should be an non-constant int");
214
215 int max_disp;
216 bool disp_is_in_range;
217 bool embedded_shift;
218
219 switch (type) {
220 case T_BYTE:
221 case T_SHORT:
222 case T_CHAR:
223 max_disp = 256; // ldrh, ldrsb encoding has 8-bit offset
224 embedded_shift = false;
225 break;
226 case T_FLOAT:
227 case T_DOUBLE:
228 max_disp = 1024; // flds, fldd have 8-bit offset multiplied by 4
229 embedded_shift = false;
230 break;
231 case T_LONG:
232 max_disp = 4096;
233 embedded_shift = false;
234 break;
235 default:
236 max_disp = 4096; // ldr, ldrb allow 12-bit offset
237 embedded_shift = true;
238 }
239
240 disp_is_in_range = (-max_disp < disp && disp < max_disp);
241
242 if (index->is_register()) {
243 LIR_Opr tmp = new_pointer_register();
244 if (!disp_is_in_range) {
245 add_large_constant(base, disp, tmp);
246 base = tmp;
247 disp = 0;
248 }
249 LIR_Address* addr = make_address(base, index, (LIR_Address::Scale)shift, type);
250 if (disp == 0 && embedded_shift) {
251 // can use ldr/str instruction with register index
252 return addr;
253 } else {
254 LIR_Opr tmp = new_pointer_register();
255 __ add(base, LIR_OprFact::address(addr), tmp); // add with shifted/extended register
256 return new LIR_Address(tmp, disp, type);
257 }
258 }
259
260 // If the displacement is too large to be inlined into LDR instruction,
261 // generate large constant with additional sequence of ADD instructions
262 int excess_disp = disp & ~(max_disp - 1);
263 if (excess_disp != 0) {
264 LIR_Opr tmp = new_pointer_register();
265 add_large_constant(base, excess_disp, tmp);
266 base = tmp;
267 }
268 return new LIR_Address(base, disp & (max_disp - 1), type);
269 }
270
271
272 LIR_Address* LIRGenerator::emit_array_address(LIR_Opr array_opr, LIR_Opr index_opr, BasicType type) {
273 int base_offset = arrayOopDesc::base_offset_in_bytes(type);
274 int elem_size = type2aelembytes(type);
275
276 if (index_opr->is_constant()) {
277 int offset = base_offset + index_opr->as_constant_ptr()->as_jint() * elem_size;
278 return generate_address(array_opr, offset, type);
279 } else {
280 assert(index_opr->is_register(), "must be");
281 int scale = exact_log2(elem_size);
282 return generate_address(array_opr, index_opr, scale, base_offset, type);
283 }
284 }
285
286
287 LIR_Opr LIRGenerator::load_immediate(int x, BasicType type) {
288 assert(type == T_LONG || type == T_INT, "should be");
289 LIR_Opr r = make_constant(type, x);
290 bool imm_in_range = AsmOperand::is_rotated_imm(x);
291 if (!imm_in_range) {
292 LIR_Opr tmp = new_register(type);
293 __ move(r, tmp);
294 return tmp;
295 }
296 return r;
297 }
298
299
300 void LIRGenerator::increment_counter(address counter, BasicType type, int step) {
301 LIR_Opr pointer = new_pointer_register();
302 __ move(LIR_OprFact::intptrConst(counter), pointer);
303 LIR_Address* addr = new LIR_Address(pointer, type);
304 increment_counter(addr, step);
305 }
306
307
308 void LIRGenerator::increment_counter(LIR_Address* addr, int step) {
309 LIR_Opr temp = new_register(addr->type());
310 __ move(addr, temp);
311 __ add(temp, make_constant(addr->type(), step), temp);
312 __ move(temp, addr);
313 }
314
315
316 void LIRGenerator::cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info) {
317 __ load(new LIR_Address(base, disp, T_INT), FrameMap::LR_opr, info);
318 __ cmp(condition, FrameMap::LR_opr, c);
319 }
320
321
322 void LIRGenerator::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Opr base, int disp, BasicType type, CodeEmitInfo* info) {
323 __ load(new LIR_Address(base, disp, type), FrameMap::LR_opr, info);
324 __ cmp(condition, reg, FrameMap::LR_opr);
325 }
326
327
328 bool LIRGenerator::strength_reduce_multiply(LIR_Opr left, int c, LIR_Opr result, LIR_Opr tmp) {
329 assert(left != result, "should be different registers");
330 if (is_power_of_2(c + 1)) {
331 LIR_Address::Scale scale = (LIR_Address::Scale) log2_intptr(c + 1);
332 LIR_Address* addr = new LIR_Address(left, left, scale, 0, T_INT);
333 __ sub(LIR_OprFact::address(addr), left, result); // rsb with shifted register
334 return true;
335 } else if (is_power_of_2(c - 1)) {
336 LIR_Address::Scale scale = (LIR_Address::Scale) log2_intptr(c - 1);
337 LIR_Address* addr = new LIR_Address(left, left, scale, 0, T_INT);
338 __ add(left, LIR_OprFact::address(addr), result); // add with shifted register
339 return true;
340 }
341 return false;
342 }
343
344
345 void LIRGenerator::store_stack_parameter(LIR_Opr item, ByteSize offset_from_sp) {
346 assert(item->type() == T_INT, "other types are not expected");
347 __ store(item, new LIR_Address(FrameMap::SP_opr, in_bytes(offset_from_sp), item->type()));
348 }
349
350 void LIRGenerator::set_card(LIR_Opr value, LIR_Address* card_addr) {
351 assert(CardTable::dirty_card_val() == 0,
352 "Cannot use the register containing the card table base address directly");
353 if((ci_card_table_address_as<intx>() & 0xff) == 0) {
354 // If the card table base address is aligned to 256 bytes, we can use the register
355 // that contains the card_table_base_address.
356 __ move(value, card_addr);
357 } else {
358 // Otherwise we need to create a register containing that value.
359 LIR_Opr tmp_zero = new_register(T_INT);
360 __ move(LIR_OprFact::intConst(CardTable::dirty_card_val()), tmp_zero);
361 __ move(tmp_zero, card_addr);
362 }
363 }
364
365 void LIRGenerator::CardTableBarrierSet_post_barrier_helper(LIR_OprDesc* addr, LIR_Const* card_table_base) {
366 assert(addr->is_register(), "must be a register at this point");
367
368 CardTableBarrierSet* ctbs = barrier_set_cast<CardTableBarrierSet>(BarrierSet::barrier_set());
369 CardTable* ct = ctbs->card_table();
370
371 LIR_Opr tmp = FrameMap::LR_ptr_opr;
372
373 bool load_card_table_base_const = VM_Version::supports_movw();
374 if (load_card_table_base_const) {
375 __ move((LIR_Opr)card_table_base, tmp);
376 } else {
377 __ move(new LIR_Address(FrameMap::Rthread_opr, in_bytes(JavaThread::card_table_base_offset()), T_ADDRESS), tmp);
378 }
379
380 // Use unsigned type T_BOOLEAN here rather than (signed) T_BYTE since signed load
381 // byte instruction does not support the addressing mode we need.
382 LIR_Address* card_addr = new LIR_Address(tmp, addr, (LIR_Address::Scale) -CardTable::card_shift, 0, T_BOOLEAN);
383 if (UseCondCardMark) {
384 if (ct->scanned_concurrently()) {
385 __ membar_storeload();
386 }
387 LIR_Opr cur_value = new_register(T_INT);
388 __ move(card_addr, cur_value);
389
390 LabelObj* L_already_dirty = new LabelObj();
391 __ cmp(lir_cond_equal, cur_value, LIR_OprFact::intConst(CardTable::dirty_card_val()));
392 __ branch(lir_cond_equal, T_BYTE, L_already_dirty->label());
393 set_card(tmp, card_addr);
394 __ branch_destination(L_already_dirty->label());
395 } else {
396 if (ct->scanned_concurrently()) {
397 __ membar_storestore();
398 }
399 set_card(tmp, card_addr);
400 }
401 }
402
403 void LIRGenerator::array_store_check(LIR_Opr value, LIR_Opr array, CodeEmitInfo* store_check_info, ciMethod* profiled_method, int profiled_bci) {
404 LIR_Opr tmp1 = FrameMap::R0_oop_opr;
405 LIR_Opr tmp2 = FrameMap::R1_oop_opr;
406 LIR_Opr tmp3 = LIR_OprFact::illegalOpr;
407 __ store_check(value, array, tmp1, tmp2, tmp3, store_check_info, profiled_method, profiled_bci);
408 }
409
410 //----------------------------------------------------------------------
411 // visitor functions
412 //----------------------------------------------------------------------
413
414 void LIRGenerator::do_MonitorEnter(MonitorEnter* x) {
415 assert(x->is_pinned(),"");
416 LIRItem obj(x->obj(), this);
417 obj.load_item();
418 set_no_result(x);
419
420 LIR_Opr lock = new_pointer_register();
421 LIR_Opr hdr = new_pointer_register();
422
423 // Need a scratch register for biased locking on arm
424 LIR_Opr scratch = LIR_OprFact::illegalOpr;
425 if(UseBiasedLocking) {
426 scratch = new_pointer_register();
427 } else {
428 scratch = atomicLockOpr();
429 }
430
431 CodeEmitInfo* info_for_exception = NULL;
432 if (x->needs_null_check()) {
433 info_for_exception = state_for(x);
434 }
435
436 CodeEmitInfo* info = state_for(x, x->state(), true);
437 monitor_enter(obj.result(), lock, hdr, scratch,
438 x->monitor_no(), info_for_exception, info);
439 }
440
441
442 void LIRGenerator::do_MonitorExit(MonitorExit* x) {
443 assert(x->is_pinned(),"");
444 LIRItem obj(x->obj(), this);
445 obj.dont_load_item();
446 set_no_result(x);
447
448 LIR_Opr obj_temp = new_pointer_register();
449 LIR_Opr lock = new_pointer_register();
450 LIR_Opr hdr = new_pointer_register();
451
452 monitor_exit(obj_temp, lock, hdr, atomicLockOpr(), x->monitor_no());
453 }
454
455
456 // _ineg, _lneg, _fneg, _dneg
457 void LIRGenerator::do_NegateOp(NegateOp* x) {
458 #ifdef __SOFTFP__
459 address runtime_func = NULL;
460 ValueTag tag = x->type()->tag();
461 if (tag == floatTag) {
462 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::fneg);
463 } else if (tag == doubleTag) {
464 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dneg);
465 }
466 if (runtime_func != NULL) {
467 set_result(x, call_runtime(x->x(), runtime_func, x->type(), NULL));
468 return;
469 }
470 #endif // __SOFTFP__
471 LIRItem value(x->x(), this);
472 value.load_item();
473 LIR_Opr reg = rlock_result(x);
474 __ negate(value.result(), reg);
475 }
476
477
478 // for _fadd, _fmul, _fsub, _fdiv, _frem
479 // _dadd, _dmul, _dsub, _ddiv, _drem
480 void LIRGenerator::do_ArithmeticOp_FPU(ArithmeticOp* x) {
481 address runtime_func;
482 switch (x->op()) {
483 case Bytecodes::_frem:
484 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::frem);
485 break;
486 case Bytecodes::_drem:
487 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::drem);
488 break;
489 #ifdef __SOFTFP__
490 // Call function compiled with -msoft-float.
491
492 // __aeabi_XXXX_extlib: Optional wrapper around SoftFloat-3e
493 // for calculation accuracy improvement. See CR 6757269, JDK-8215902.
494
495 case Bytecodes::_fadd:
496 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_fadd_extlib);
497 break;
498 case Bytecodes::_fmul:
499 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_fmul);
500 break;
501 case Bytecodes::_fsub:
502 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_fsub_extlib);
503 break;
504 case Bytecodes::_fdiv:
505 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_fdiv);
506 break;
507 case Bytecodes::_dadd:
508 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_dadd_extlib);
509 break;
510 case Bytecodes::_dmul:
511 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_dmul);
512 break;
513 case Bytecodes::_dsub:
514 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_dsub_extlib);
515 break;
516 case Bytecodes::_ddiv:
517 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_ddiv);
518 break;
519 default:
520 ShouldNotReachHere();
521 #else // __SOFTFP__
522 default: {
523 LIRItem left(x->x(), this);
524 LIRItem right(x->y(), this);
525 left.load_item();
526 right.load_item();
527 rlock_result(x);
528 arithmetic_op_fpu(x->op(), x->operand(), left.result(), right.result(), x->is_strictfp());
529 return;
530 }
531 #endif // __SOFTFP__
532 }
533
534 LIR_Opr result = call_runtime(x->x(), x->y(), runtime_func, x->type(), NULL);
535 set_result(x, result);
536 }
537
538
539 void LIRGenerator::make_div_by_zero_check(LIR_Opr right_arg, BasicType type, CodeEmitInfo* info) {
540 assert(right_arg->is_register(), "must be");
541 __ cmp(lir_cond_equal, right_arg, make_constant(type, 0));
542 __ branch(lir_cond_equal, type, new DivByZeroStub(info));
543 }
544
545
546 // for _ladd, _lmul, _lsub, _ldiv, _lrem
547 void LIRGenerator::do_ArithmeticOp_Long(ArithmeticOp* x) {
548 CodeEmitInfo* info = NULL;
549 if (x->op() == Bytecodes::_ldiv || x->op() == Bytecodes::_lrem) {
550 info = state_for(x);
551 }
552
553 switch (x->op()) {
554 case Bytecodes::_ldiv:
555 case Bytecodes::_lrem: {
556 LIRItem right(x->y(), this);
557 right.load_item();
558 make_div_by_zero_check(right.result(), T_LONG, info);
559 }
560 // Fall through
561 case Bytecodes::_lmul: {
562 address entry;
563 switch (x->op()) {
564 case Bytecodes::_lrem:
565 entry = CAST_FROM_FN_PTR(address, SharedRuntime::lrem);
566 break;
567 case Bytecodes::_ldiv:
568 entry = CAST_FROM_FN_PTR(address, SharedRuntime::ldiv);
569 break;
570 case Bytecodes::_lmul:
571 entry = CAST_FROM_FN_PTR(address, SharedRuntime::lmul);
572 break;
573 default:
574 ShouldNotReachHere();
575 return;
576 }
577 LIR_Opr result = call_runtime(x->y(), x->x(), entry, x->type(), NULL);
578 set_result(x, result);
579 break;
580 }
581 case Bytecodes::_ladd:
582 case Bytecodes::_lsub: {
583 LIRItem left(x->x(), this);
584 LIRItem right(x->y(), this);
585 left.load_item();
586 right.load_item();
587 rlock_result(x);
588 arithmetic_op_long(x->op(), x->operand(), left.result(), right.result(), NULL);
589 break;
590 }
591 default:
592 ShouldNotReachHere();
593 }
594 }
595
596
597 // for: _iadd, _imul, _isub, _idiv, _irem
598 void LIRGenerator::do_ArithmeticOp_Int(ArithmeticOp* x) {
599 bool is_div_rem = x->op() == Bytecodes::_idiv || x->op() == Bytecodes::_irem;
600 LIRItem left(x->x(), this);
601 LIRItem right(x->y(), this);
602 LIRItem* left_arg = &left;
603 LIRItem* right_arg = &right;
604
605 // Test if instr is commutative and if we should swap
606 if (x->is_commutative() && left.is_constant()) {
607 left_arg = &right;
608 right_arg = &left;
609 }
610
611 if (is_div_rem) {
612 CodeEmitInfo* info = state_for(x);
613 if (x->op() == Bytecodes::_idiv && right_arg->is_constant() && is_power_of_2(right_arg->get_jint_constant())) {
614 left_arg->load_item();
615 right_arg->dont_load_item();
616 LIR_Opr tmp = LIR_OprFact::illegalOpr;
617 LIR_Opr result = rlock_result(x);
618 __ idiv(left_arg->result(), right_arg->result(), result, tmp, info);
619 } else {
620 left_arg->load_item_force(FrameMap::R0_opr);
621 right_arg->load_item_force(FrameMap::R2_opr);
622 LIR_Opr tmp = FrameMap::R1_opr;
623 LIR_Opr result = rlock_result(x);
624 LIR_Opr out_reg;
625 if (x->op() == Bytecodes::_irem) {
626 out_reg = FrameMap::R0_opr;
627 __ irem(left_arg->result(), right_arg->result(), out_reg, tmp, info);
628 } else { // (x->op() == Bytecodes::_idiv)
629 out_reg = FrameMap::R1_opr;
630 __ idiv(left_arg->result(), right_arg->result(), out_reg, tmp, info);
631 }
632 __ move(out_reg, result);
633 }
634
635
636 } else {
637 left_arg->load_item();
638 if (x->op() == Bytecodes::_imul && right_arg->is_constant()) {
639 jint c = right_arg->get_jint_constant();
640 if (c > 0 && c < max_jint && (is_power_of_2(c) || is_power_of_2(c - 1) || is_power_of_2(c + 1))) {
641 right_arg->dont_load_item();
642 } else {
643 right_arg->load_item();
644 }
645 } else {
646 right_arg->load_nonconstant();
647 }
648 rlock_result(x);
649 assert(right_arg->is_constant() || right_arg->is_register(), "wrong state of right");
650 arithmetic_op_int(x->op(), x->operand(), left_arg->result(), right_arg->result(), NULL);
651 }
652 }
653
654
655 void LIRGenerator::do_ArithmeticOp(ArithmeticOp* x) {
656 ValueTag tag = x->type()->tag();
657 assert(x->x()->type()->tag() == tag && x->y()->type()->tag() == tag, "wrong parameters");
658 switch (tag) {
659 case floatTag:
660 case doubleTag: do_ArithmeticOp_FPU(x); return;
661 case longTag: do_ArithmeticOp_Long(x); return;
662 case intTag: do_ArithmeticOp_Int(x); return;
663 default: ShouldNotReachHere(); return;
664 }
665 }
666
667
668 // _ishl, _lshl, _ishr, _lshr, _iushr, _lushr
669 void LIRGenerator::do_ShiftOp(ShiftOp* x) {
670 LIRItem value(x->x(), this);
671 LIRItem count(x->y(), this);
672
673 if (value.type()->is_long()) {
674 count.set_destroys_register();
675 }
676
677 if (count.is_constant()) {
678 assert(count.type()->as_IntConstant() != NULL, "should be");
679 count.dont_load_item();
680 } else {
681 count.load_item();
682 }
683 value.load_item();
684
685 LIR_Opr res = rlock_result(x);
686 shift_op(x->op(), res, value.result(), count.result(), LIR_OprFact::illegalOpr);
687 }
688
689
690 // _iand, _land, _ior, _lor, _ixor, _lxor
691 void LIRGenerator::do_LogicOp(LogicOp* x) {
692 LIRItem left(x->x(), this);
693 LIRItem right(x->y(), this);
694
695 left.load_item();
696
697 right.load_nonconstant();
698
699 logic_op(x->op(), rlock_result(x), left.result(), right.result());
700 }
701
702
703 // _lcmp, _fcmpl, _fcmpg, _dcmpl, _dcmpg
704 void LIRGenerator::do_CompareOp(CompareOp* x) {
705 #ifdef __SOFTFP__
706 address runtime_func;
707 switch (x->op()) {
708 case Bytecodes::_fcmpl:
709 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::fcmpl);
710 break;
711 case Bytecodes::_fcmpg:
712 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::fcmpg);
713 break;
714 case Bytecodes::_dcmpl:
715 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dcmpl);
716 break;
717 case Bytecodes::_dcmpg:
718 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dcmpg);
719 break;
720 case Bytecodes::_lcmp: {
721 LIRItem left(x->x(), this);
722 LIRItem right(x->y(), this);
723 left.load_item();
724 right.load_nonconstant();
725 LIR_Opr reg = rlock_result(x);
726 __ lcmp2int(left.result(), right.result(), reg);
727 return;
728 }
729 default:
730 ShouldNotReachHere();
731 }
732 LIR_Opr result = call_runtime(x->x(), x->y(), runtime_func, x->type(), NULL);
733 set_result(x, result);
734 #else // __SOFTFP__
735 LIRItem left(x->x(), this);
736 LIRItem right(x->y(), this);
737 left.load_item();
738
739 right.load_nonconstant();
740
741 LIR_Opr reg = rlock_result(x);
742
743 if (x->x()->type()->is_float_kind()) {
744 Bytecodes::Code code = x->op();
745 __ fcmp2int(left.result(), right.result(), reg, (code == Bytecodes::_fcmpl || code == Bytecodes::_dcmpl));
746 } else if (x->x()->type()->tag() == longTag) {
747 __ lcmp2int(left.result(), right.result(), reg);
748 } else {
749 ShouldNotReachHere();
750 }
751 #endif // __SOFTFP__
752 }
753
754 LIR_Opr LIRGenerator::atomic_cmpxchg(BasicType type, LIR_Opr addr, LIRItem& cmp_value, LIRItem& new_value) {
755 LIR_Opr ill = LIR_OprFact::illegalOpr; // for convenience
756 LIR_Opr tmp1 = LIR_OprFact::illegalOpr;
757 LIR_Opr tmp2 = LIR_OprFact::illegalOpr;
758 new_value.load_item();
759 cmp_value.load_item();
760 LIR_Opr result = new_register(T_INT);
761 if (type == T_OBJECT || type == T_ARRAY) {
762 __ cas_obj(addr, cmp_value.result(), new_value.result(), new_register(T_INT), new_register(T_INT), result);
763 } else if (type == T_INT) {
764 __ cas_int(addr->as_address_ptr()->base(), cmp_value.result(), new_value.result(), tmp1, tmp1, result);
765 } else if (type == T_LONG) {
766 tmp1 = new_register(T_LONG);
767 __ cas_long(addr->as_address_ptr()->base(), cmp_value.result(), new_value.result(), tmp1, tmp2, result);
768 } else {
769 ShouldNotReachHere();
770 }
771 return result;
772 }
773
774 LIR_Opr LIRGenerator::atomic_xchg(BasicType type, LIR_Opr addr, LIRItem& value) {
775 bool is_oop = type == T_OBJECT || type == T_ARRAY;
776 LIR_Opr result = new_register(type);
777 value.load_item();
778 assert(type == T_INT || is_oop LP64_ONLY( || type == T_LONG ), "unexpected type");
779 LIR_Opr tmp = (UseCompressedOops && is_oop) ? new_pointer_register() : LIR_OprFact::illegalOpr;
780 __ xchg(addr, value.result(), result, tmp);
781 return result;
782 }
783
784 LIR_Opr LIRGenerator::atomic_add(BasicType type, LIR_Opr addr, LIRItem& value) {
785 LIR_Opr result = new_register(type);
786 value.load_item();
787 assert(type == T_INT LP64_ONLY( || type == T_LONG), "unexpected type");
788 LIR_Opr tmp = new_register(type);
789 __ xadd(addr, value.result(), result, tmp);
790 return result;
791 }
792
793 void LIRGenerator::do_MathIntrinsic(Intrinsic* x) {
794 address runtime_func;
795 switch (x->id()) {
796 case vmIntrinsics::_dabs: {
797 #ifdef __SOFTFP__
798 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dabs);
799 break;
800 #else
801 assert(x->number_of_arguments() == 1, "wrong type");
802 LIRItem value(x->argument_at(0), this);
803 value.load_item();
804 __ abs(value.result(), rlock_result(x), LIR_OprFact::illegalOpr);
805 return;
806 #endif // __SOFTFP__
807 }
808 case vmIntrinsics::_dsqrt: {
809 #ifdef __SOFTFP__
810 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dsqrt);
811 break;
812 #else
813 assert(x->number_of_arguments() == 1, "wrong type");
814 LIRItem value(x->argument_at(0), this);
815 value.load_item();
816 __ sqrt(value.result(), rlock_result(x), LIR_OprFact::illegalOpr);
817 return;
818 #endif // __SOFTFP__
819 }
820 case vmIntrinsics::_dsin:
821 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dsin);
822 break;
823 case vmIntrinsics::_dcos:
824 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dcos);
825 break;
826 case vmIntrinsics::_dtan:
827 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dtan);
828 break;
829 case vmIntrinsics::_dlog:
830 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dlog);
831 break;
832 case vmIntrinsics::_dlog10:
833 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dlog10);
834 break;
835 case vmIntrinsics::_dexp:
836 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dexp);
837 break;
838 case vmIntrinsics::_dpow:
839 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::dpow);
840 break;
841 default:
842 ShouldNotReachHere();
843 return;
844 }
845
846 LIR_Opr result;
847 if (x->number_of_arguments() == 1) {
848 result = call_runtime(x->argument_at(0), runtime_func, x->type(), NULL);
849 } else {
850 assert(x->number_of_arguments() == 2 && x->id() == vmIntrinsics::_dpow, "unexpected intrinsic");
851 result = call_runtime(x->argument_at(0), x->argument_at(1), runtime_func, x->type(), NULL);
852 }
853 set_result(x, result);
854 }
855
856 void LIRGenerator::do_FmaIntrinsic(Intrinsic* x) {
857 fatal("FMA intrinsic is not implemented on this platform");
858 }
859
860 void LIRGenerator::do_vectorizedMismatch(Intrinsic* x) {
861 fatal("vectorizedMismatch intrinsic is not implemented on this platform");
862 }
863
864 void LIRGenerator::do_ArrayCopy(Intrinsic* x) {
865 CodeEmitInfo* info = state_for(x, x->state());
866 assert(x->number_of_arguments() == 5, "wrong type");
867 LIRItem src(x->argument_at(0), this);
868 LIRItem src_pos(x->argument_at(1), this);
869 LIRItem dst(x->argument_at(2), this);
870 LIRItem dst_pos(x->argument_at(3), this);
871 LIRItem length(x->argument_at(4), this);
872
873 // We put arguments into the same registers which are used for a Java call.
874 // Note: we used fixed registers for all arguments because all registers
875 // are caller-saved, so register allocator treats them all as used.
876 src.load_item_force (FrameMap::R0_oop_opr);
877 src_pos.load_item_force(FrameMap::R1_opr);
878 dst.load_item_force (FrameMap::R2_oop_opr);
879 dst_pos.load_item_force(FrameMap::R3_opr);
880 length.load_item_force (FrameMap::R4_opr);
881 LIR_Opr tmp = (FrameMap::R5_opr);
882 set_no_result(x);
883
884 int flags;
885 ciArrayKlass* expected_type;
886 arraycopy_helper(x, &flags, &expected_type);
887 __ arraycopy(src.result(), src_pos.result(), dst.result(), dst_pos.result(), length.result(),
888 tmp, expected_type, flags, info);
889 }
890
891 void LIRGenerator::do_update_CRC32(Intrinsic* x) {
892 fatal("CRC32 intrinsic is not implemented on this platform");
893 }
894
895 void LIRGenerator::do_update_CRC32C(Intrinsic* x) {
896 Unimplemented();
897 }
898
899 void LIRGenerator::do_Convert(Convert* x) {
900 address runtime_func;
901 switch (x->op()) {
902 case Bytecodes::_l2f:
903 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::l2f);
904 break;
905 case Bytecodes::_l2d:
906 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::l2d);
907 break;
908 case Bytecodes::_f2l:
909 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::f2l);
910 break;
911 case Bytecodes::_d2l:
912 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::d2l);
913 break;
914 #ifdef __SOFTFP__
915 case Bytecodes::_f2d:
916 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_f2d);
917 break;
918 case Bytecodes::_d2f:
919 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_d2f);
920 break;
921 case Bytecodes::_i2f:
922 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_i2f);
923 break;
924 case Bytecodes::_i2d:
925 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_i2d);
926 break;
927 case Bytecodes::_f2i:
928 runtime_func = CAST_FROM_FN_PTR(address, __aeabi_f2iz);
929 break;
930 case Bytecodes::_d2i:
931 // This is implemented in hard float in assembler on arm but a call
932 // on other platforms.
933 runtime_func = CAST_FROM_FN_PTR(address, SharedRuntime::d2i);
934 break;
935 #endif // __SOFTFP__
936 default: {
937 LIRItem value(x->value(), this);
938 value.load_item();
939 LIR_Opr reg = rlock_result(x);
940 __ convert(x->op(), value.result(), reg, NULL);
941 return;
942 }
943 }
944
945 LIR_Opr result = call_runtime(x->value(), runtime_func, x->type(), NULL);
946 set_result(x, result);
947 }
948
949
950 void LIRGenerator::do_NewInstance(NewInstance* x) {
951 print_if_not_loaded(x);
952
953 CodeEmitInfo* info = state_for(x, x->state());
954 LIR_Opr reg = result_register_for(x->type()); // R0 is required by runtime call in NewInstanceStub::emit_code
955 LIR_Opr klass_reg = FrameMap::R1_metadata_opr; // R1 is required by runtime call in NewInstanceStub::emit_code
956 LIR_Opr tmp1 = new_register(objectType);
957 LIR_Opr tmp2 = new_register(objectType);
958 LIR_Opr tmp3 = FrameMap::LR_oop_opr;
959
960 new_instance(reg, x->klass(), x->is_unresolved(), tmp1, tmp2, tmp3,
961 LIR_OprFact::illegalOpr, klass_reg, info);
962
963 LIR_Opr result = rlock_result(x);
964 __ move(reg, result);
965 }
966
967
968 void LIRGenerator::do_NewTypeArray(NewTypeArray* x) {
969 // Evaluate state_for() first, because it can emit code
970 // with the same fixed registers that are used here (R1, R2)
971 CodeEmitInfo* info = state_for(x, x->state());
972 LIRItem length(x->length(), this);
973
974 length.load_item_force(FrameMap::R2_opr); // R2 is required by runtime call in NewTypeArrayStub::emit_code
975 LIR_Opr len = length.result();
976
977 LIR_Opr reg = result_register_for(x->type()); // R0 is required by runtime call in NewTypeArrayStub::emit_code
978 LIR_Opr klass_reg = FrameMap::R1_metadata_opr; // R1 is required by runtime call in NewTypeArrayStub::emit_code
979
980 LIR_Opr tmp1 = new_register(objectType);
981 LIR_Opr tmp2 = new_register(objectType);
982 LIR_Opr tmp3 = FrameMap::LR_oop_opr;
983 LIR_Opr tmp4 = LIR_OprFact::illegalOpr;
984
985 BasicType elem_type = x->elt_type();
986 __ metadata2reg(ciTypeArrayKlass::make(elem_type)->constant_encoding(), klass_reg);
987
988 CodeStub* slow_path = new NewTypeArrayStub(klass_reg, len, reg, info);
989 __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, elem_type, klass_reg, slow_path);
990
991 LIR_Opr result = rlock_result(x);
992 __ move(reg, result);
993 }
994
995
996 void LIRGenerator::do_NewObjectArray(NewObjectArray* x) {
997 // Evaluate state_for() first, because it can emit code
998 // with the same fixed registers that are used here (R1, R2)
999 CodeEmitInfo* info = state_for(x, x->state());
1000 LIRItem length(x->length(), this);
1001
1002 length.load_item_force(FrameMap::R2_opr); // R2 is required by runtime call in NewObjectArrayStub::emit_code
1003 LIR_Opr len = length.result();
1004
1005 CodeEmitInfo* patching_info = NULL;
1006 if (!x->klass()->is_loaded() || PatchALot) {
1007 patching_info = state_for(x, x->state_before());
1008 }
1009
1010 LIR_Opr reg = result_register_for(x->type()); // R0 is required by runtime call in NewObjectArrayStub::emit_code
1011 LIR_Opr klass_reg = FrameMap::R1_metadata_opr; // R1 is required by runtime call in NewObjectArrayStub::emit_code
1012
1013 LIR_Opr tmp1 = new_register(objectType);
1014 LIR_Opr tmp2 = new_register(objectType);
1015 LIR_Opr tmp3 = FrameMap::LR_oop_opr;
1016 LIR_Opr tmp4 = LIR_OprFact::illegalOpr;
1017
1018 CodeStub* slow_path = new NewObjectArrayStub(klass_reg, len, reg, info);
1019 ciMetadata* obj = ciObjArrayKlass::make(x->klass());
1020 if (obj == ciEnv::unloaded_ciobjarrayklass()) {
1021 BAILOUT("encountered unloaded_ciobjarrayklass due to out of memory error");
1022 }
1023 klass2reg_with_patching(klass_reg, obj, patching_info);
1024 __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, T_OBJECT, klass_reg, slow_path);
1025
1026 LIR_Opr result = rlock_result(x);
1027 __ move(reg, result);
1028 }
1029
1030
1031 void LIRGenerator::do_NewMultiArray(NewMultiArray* x) {
1032 Values* dims = x->dims();
1033 int i = dims->length();
1034 LIRItemList* items = new LIRItemList(i, i, NULL);
1035 while (i-- > 0) {
1036 LIRItem* size = new LIRItem(dims->at(i), this);
1037 items->at_put(i, size);
1038 }
1039
1040 // Need to get the info before, as the items may become invalid through item_free
1041 CodeEmitInfo* patching_info = NULL;
1042 if (!x->klass()->is_loaded() || PatchALot) {
1043 patching_info = state_for(x, x->state_before());
1044
1045 // Cannot re-use same xhandlers for multiple CodeEmitInfos, so
1046 // clone all handlers (NOTE: Usually this is handled transparently
1047 // by the CodeEmitInfo cloning logic in CodeStub constructors but
1048 // is done explicitly here because a stub isn't being used).
1049 x->set_exception_handlers(new XHandlers(x->exception_handlers()));
1050 }
1051
1052 i = dims->length();
1053 while (i-- > 0) {
1054 LIRItem* size = items->at(i);
1055 size->load_item();
1056 LIR_Opr sz = size->result();
1057 assert(sz->type() == T_INT, "should be");
1058 store_stack_parameter(sz, in_ByteSize(i * BytesPerInt));
1059 }
1060
1061 CodeEmitInfo* info = state_for(x, x->state());
1062 LIR_Opr klass_reg = FrameMap::R0_metadata_opr;
1063 klass2reg_with_patching(klass_reg, x->klass(), patching_info);
1064
1065 LIR_Opr rank = FrameMap::R2_opr;
1066 __ move(LIR_OprFact::intConst(x->rank()), rank);
1067 LIR_Opr varargs = FrameMap::SP_opr;
1068 LIR_OprList* args = new LIR_OprList(3);
1069 args->append(klass_reg);
1070 args->append(rank);
1071 args->append(varargs);
1072 LIR_Opr reg = result_register_for(x->type());
1073 __ call_runtime(Runtime1::entry_for(Runtime1::new_multi_array_id),
1074 LIR_OprFact::illegalOpr, reg, args, info);
1075
1076 LIR_Opr result = rlock_result(x);
1077 __ move(reg, result);
1078 }
1079
1080
1081 void LIRGenerator::do_BlockBegin(BlockBegin* x) {
1082 // nothing to do for now
1083 }
1084
1085
1086 void LIRGenerator::do_CheckCast(CheckCast* x) {
1087 LIRItem obj(x->obj(), this);
1088 CodeEmitInfo* patching_info = NULL;
1089 if (!x->klass()->is_loaded() || (PatchALot && !x->is_incompatible_class_change_check() && !x->is_invokespecial_receiver_check())) {
1090 patching_info = state_for(x, x->state_before());
1091 }
1092
1093 obj.load_item();
1094
1095 CodeEmitInfo* info_for_exception =
1096 (x->needs_exception_state() ? state_for(x) :
1097 state_for(x, x->state_before(), true /*ignore_xhandler*/));
1098
1099 CodeStub* stub;
1100 if (x->is_incompatible_class_change_check()) {
1101 assert(patching_info == NULL, "can't patch this");
1102 stub = new SimpleExceptionStub(Runtime1::throw_incompatible_class_change_error_id,
1103 LIR_OprFact::illegalOpr, info_for_exception);
1104 } else if (x->is_invokespecial_receiver_check()) {
1105 assert(patching_info == NULL, "can't patch this");
1106 stub = new DeoptimizeStub(info_for_exception,
1107 Deoptimization::Reason_class_check,
1108 Deoptimization::Action_none);
1109 } else {
1110 stub = new SimpleExceptionStub(Runtime1::throw_class_cast_exception_id,
1111 LIR_OprFact::illegalOpr, info_for_exception);
1112 }
1113
1114 LIR_Opr out_reg = rlock_result(x);
1115 LIR_Opr tmp1 = FrameMap::R0_oop_opr;
1116 LIR_Opr tmp2 = FrameMap::R1_oop_opr;
1117 LIR_Opr tmp3 = LIR_OprFact::illegalOpr;
1118
1119 __ checkcast(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3, x->direct_compare(),
1120 info_for_exception, patching_info, stub, x->profiled_method(), x->profiled_bci());
1121 }
1122
1123
1124 void LIRGenerator::do_InstanceOf(InstanceOf* x) {
1125 LIRItem obj(x->obj(), this);
1126 CodeEmitInfo* patching_info = NULL;
1127 if (!x->klass()->is_loaded() || PatchALot) {
1128 patching_info = state_for(x, x->state_before());
1129 }
1130
1131 obj.load_item();
1132 LIR_Opr out_reg = rlock_result(x);
1133 LIR_Opr tmp1 = FrameMap::R0_oop_opr;
1134 LIR_Opr tmp2 = FrameMap::R1_oop_opr;
1135 LIR_Opr tmp3 = LIR_OprFact::illegalOpr;
1136
1137 __ instanceof(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3,
1138 x->direct_compare(), patching_info, x->profiled_method(), x->profiled_bci());
1139 }
1140
1141
1142 #ifdef __SOFTFP__
1143 // Turn operator if (f <op> g) into runtime call:
1144 // call _aeabi_fcmp<op>(f, g)
1145 // cmp(eq, 1)
1146 // branch(eq, true path).
1147 void LIRGenerator::do_soft_float_compare(If* x) {
1148 assert(x->number_of_sux() == 2, "inconsistency");
1149 ValueTag tag = x->x()->type()->tag();
1150 If::Condition cond = x->cond();
1151 address runtime_func;
1152 // unordered comparison gets the wrong answer because aeabi functions
1153 // return false.
1154 bool unordered_is_true = x->unordered_is_true();
1155 // reverse of condition for ne
1156 bool compare_to_zero = false;
1157 switch (lir_cond(cond)) {
1158 case lir_cond_notEqual:
1159 compare_to_zero = true; // fall through
1160 case lir_cond_equal:
1161 runtime_func = tag == floatTag ?
1162 CAST_FROM_FN_PTR(address, __aeabi_fcmpeq):
1163 CAST_FROM_FN_PTR(address, __aeabi_dcmpeq);
1164 break;
1165 case lir_cond_less:
1166 if (unordered_is_true) {
1167 runtime_func = tag == floatTag ?
1168 CAST_FROM_FN_PTR(address, SharedRuntime::unordered_fcmplt):
1169 CAST_FROM_FN_PTR(address, SharedRuntime::unordered_dcmplt);
1170 } else {
1171 runtime_func = tag == floatTag ?
1172 CAST_FROM_FN_PTR(address, __aeabi_fcmplt):
1173 CAST_FROM_FN_PTR(address, __aeabi_dcmplt);
1174 }
1175 break;
1176 case lir_cond_lessEqual:
1177 if (unordered_is_true) {
1178 runtime_func = tag == floatTag ?
1179 CAST_FROM_FN_PTR(address, SharedRuntime::unordered_fcmple):
1180 CAST_FROM_FN_PTR(address, SharedRuntime::unordered_dcmple);
1181 } else {
1182 runtime_func = tag == floatTag ?
1183 CAST_FROM_FN_PTR(address, __aeabi_fcmple):
1184 CAST_FROM_FN_PTR(address, __aeabi_dcmple);
1185 }
1186 break;
1187 case lir_cond_greaterEqual:
1188 if (unordered_is_true) {
1189 runtime_func = tag == floatTag ?
1190 CAST_FROM_FN_PTR(address, SharedRuntime::unordered_fcmpge):
1191 CAST_FROM_FN_PTR(address, SharedRuntime::unordered_dcmpge);
1192 } else {
1193 runtime_func = tag == floatTag ?
1194 CAST_FROM_FN_PTR(address, __aeabi_fcmpge):
1195 CAST_FROM_FN_PTR(address, __aeabi_dcmpge);
1196 }
1197 break;
1198 case lir_cond_greater:
1199 if (unordered_is_true) {
1200 runtime_func = tag == floatTag ?
1201 CAST_FROM_FN_PTR(address, SharedRuntime::unordered_fcmpgt):
1202 CAST_FROM_FN_PTR(address, SharedRuntime::unordered_dcmpgt);
1203 } else {
1204 runtime_func = tag == floatTag ?
1205 CAST_FROM_FN_PTR(address, __aeabi_fcmpgt):
1206 CAST_FROM_FN_PTR(address, __aeabi_dcmpgt);
1207 }
1208 break;
1209 case lir_cond_aboveEqual:
1210 case lir_cond_belowEqual:
1211 ShouldNotReachHere(); // We're not going to get these.
1212 default:
1213 assert(lir_cond(cond) == lir_cond_always, "must be");
1214 ShouldNotReachHere();
1215 }
1216 set_no_result(x);
1217
1218 // add safepoint before generating condition code so it can be recomputed
1219 if (x->is_safepoint()) {
1220 increment_backedge_counter(state_for(x, x->state_before()), x->profiled_bci());
1221 __ safepoint(LIR_OprFact::illegalOpr, state_for(x, x->state_before()));
1222 }
1223 // Call float compare function, returns (1,0) if true or false.
1224 LIR_Opr result = call_runtime(x->x(), x->y(), runtime_func, intType, NULL);
1225 __ cmp(lir_cond_equal, result,
1226 compare_to_zero ?
1227 LIR_OprFact::intConst(0) : LIR_OprFact::intConst(1));
1228 profile_branch(x, cond);
1229 move_to_phi(x->state());
1230 __ branch(lir_cond_equal, T_INT, x->tsux());
1231 }
1232 #endif // __SOFTFP__
1233
1234 void LIRGenerator::do_If(If* x) {
1235 assert(x->number_of_sux() == 2, "inconsistency");
1236 ValueTag tag = x->x()->type()->tag();
1237
1238 #ifdef __SOFTFP__
1239 if (tag == floatTag || tag == doubleTag) {
1240 do_soft_float_compare(x);
1241 assert(x->default_sux() == x->fsux(), "wrong destination above");
1242 __ jump(x->default_sux());
1243 return;
1244 }
1245 #endif // __SOFTFP__
1246
1247 LIRItem xitem(x->x(), this);
1248 LIRItem yitem(x->y(), this);
1249 LIRItem* xin = &xitem;
1250 LIRItem* yin = &yitem;
1251 If::Condition cond = x->cond();
1252
1253 if (tag == longTag) {
1254 if (cond == If::gtr || cond == If::leq) {
1255 cond = Instruction::mirror(cond);
1256 xin = &yitem;
1257 yin = &xitem;
1258 }
1259 xin->set_destroys_register();
1260 }
1261
1262 xin->load_item();
1263 LIR_Opr left = xin->result();
1264 LIR_Opr right;
1265
1266 if (tag == longTag && yin->is_constant() && yin->get_jlong_constant() == 0 &&
1267 (cond == If::eql || cond == If::neq)) {
1268 // inline long zero
1269 right = LIR_OprFact::value_type(yin->value()->type());
1270 } else {
1271 yin->load_nonconstant();
1272 right = yin->result();
1273 }
1274
1275 set_no_result(x);
1276
1277 // add safepoint before generating condition code so it can be recomputed
1278 if (x->is_safepoint()) {
1279 increment_backedge_counter_conditionally(lir_cond(cond), left, right, state_for(x, x->state_before()),
1280 x->tsux()->bci(), x->fsux()->bci(), x->profiled_bci());
1281 __ safepoint(LIR_OprFact::illegalOpr, state_for(x, x->state_before()));
1282 }
1283
1284 __ cmp(lir_cond(cond), left, right);
1285 profile_branch(x, cond);
1286 move_to_phi(x->state());
1287 if (x->x()->type()->is_float_kind()) {
1288 __ branch(lir_cond(cond), right->type(), x->tsux(), x->usux());
1289 } else {
1290 __ branch(lir_cond(cond), right->type(), x->tsux());
1291 }
1292 assert(x->default_sux() == x->fsux(), "wrong destination above");
1293 __ jump(x->default_sux());
1294 }
1295
1296
1297 LIR_Opr LIRGenerator::getThreadPointer() {
1298 return FrameMap::Rthread_opr;
1299 }
1300
1301 void LIRGenerator::trace_block_entry(BlockBegin* block) {
1302 __ move(LIR_OprFact::intConst(block->block_id()), FrameMap::R0_opr);
1303 LIR_OprList* args = new LIR_OprList(1);
1304 args->append(FrameMap::R0_opr);
1305 address func = CAST_FROM_FN_PTR(address, Runtime1::trace_block_entry);
1306 __ call_runtime_leaf(func, getThreadTemp(), LIR_OprFact::illegalOpr, args);
1307 }
1308
1309
1310 void LIRGenerator::volatile_field_store(LIR_Opr value, LIR_Address* address,
1311 CodeEmitInfo* info) {
1312 if (value->is_double_cpu()) {
1313 assert(address->index()->is_illegal(), "should have a constant displacement");
1314 LIR_Opr tmp = new_pointer_register();
1315 add_large_constant(address->base(), address->disp(), tmp);
1316 __ volatile_store_mem_reg(value, new LIR_Address(tmp, (intx)0, address->type()), info);
1317 return;
1318 }
1319 __ store(value, address, info, lir_patch_none);
1320 }
1321
1322 void LIRGenerator::volatile_field_load(LIR_Address* address, LIR_Opr result,
1323 CodeEmitInfo* info) {
1324 if (result->is_double_cpu()) {
1325 assert(address->index()->is_illegal(), "should have a constant displacement");
1326 LIR_Opr tmp = new_pointer_register();
1327 add_large_constant(address->base(), address->disp(), tmp);
1328 __ volatile_load_mem_reg(new LIR_Address(tmp, (intx)0, address->type()), result, info);
1329 return;
1330 }
1331 __ load(address, result, info, lir_patch_none);
1332 }