Mercurial > hg > truffle
annotate src/cpu/sparc/vm/c1_LIRGenerator_sparc.cpp @ 16641:422eda5267b3
[SPARC] Temporary fix to get the stack for deoptimization right when exception is thrown
author | Stefan Anzinger <stefan.anzinger@gmail.com> |
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date | Thu, 24 Jul 2014 08:19:30 -0700 |
parents | b800986664f4 |
children | 273a462437e9 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "c1/c1_Compilation.hpp" | |
27 #include "c1/c1_FrameMap.hpp" | |
28 #include "c1/c1_Instruction.hpp" | |
29 #include "c1/c1_LIRAssembler.hpp" | |
30 #include "c1/c1_LIRGenerator.hpp" | |
31 #include "c1/c1_Runtime1.hpp" | |
32 #include "c1/c1_ValueStack.hpp" | |
33 #include "ci/ciArray.hpp" | |
34 #include "ci/ciObjArrayKlass.hpp" | |
35 #include "ci/ciTypeArrayKlass.hpp" | |
36 #include "runtime/sharedRuntime.hpp" | |
37 #include "runtime/stubRoutines.hpp" | |
38 #include "vmreg_sparc.inline.hpp" | |
0 | 39 |
40 #ifdef ASSERT | |
41 #define __ gen()->lir(__FILE__, __LINE__)-> | |
42 #else | |
43 #define __ gen()->lir()-> | |
44 #endif | |
45 | |
46 void LIRItem::load_byte_item() { | |
47 // byte loads use same registers as other loads | |
48 load_item(); | |
49 } | |
50 | |
51 | |
52 void LIRItem::load_nonconstant() { | |
53 LIR_Opr r = value()->operand(); | |
54 if (_gen->can_inline_as_constant(value())) { | |
55 if (!r->is_constant()) { | |
56 r = LIR_OprFact::value_type(value()->type()); | |
57 } | |
58 _result = r; | |
59 } else { | |
60 load_item(); | |
61 } | |
62 } | |
63 | |
64 | |
65 //-------------------------------------------------------------- | |
66 // LIRGenerator | |
67 //-------------------------------------------------------------- | |
68 | |
69 LIR_Opr LIRGenerator::exceptionOopOpr() { return FrameMap::Oexception_opr; } | |
70 LIR_Opr LIRGenerator::exceptionPcOpr() { return FrameMap::Oissuing_pc_opr; } | |
71 LIR_Opr LIRGenerator::syncTempOpr() { return new_register(T_OBJECT); } | |
72 LIR_Opr LIRGenerator::getThreadTemp() { return rlock_callee_saved(T_INT); } | |
73 | |
74 LIR_Opr LIRGenerator::result_register_for(ValueType* type, bool callee) { | |
75 LIR_Opr opr; | |
76 switch (type->tag()) { | |
77 case intTag: opr = callee ? FrameMap::I0_opr : FrameMap::O0_opr; break; | |
78 case objectTag: opr = callee ? FrameMap::I0_oop_opr : FrameMap::O0_oop_opr; break; | |
79 case longTag: opr = callee ? FrameMap::in_long_opr : FrameMap::out_long_opr; break; | |
80 case floatTag: opr = FrameMap::F0_opr; break; | |
81 case doubleTag: opr = FrameMap::F0_double_opr; break; | |
82 | |
83 case addressTag: | |
84 default: ShouldNotReachHere(); return LIR_OprFact::illegalOpr; | |
85 } | |
86 | |
87 assert(opr->type_field() == as_OprType(as_BasicType(type)), "type mismatch"); | |
88 return opr; | |
89 } | |
90 | |
91 LIR_Opr LIRGenerator::rlock_callee_saved(BasicType type) { | |
92 LIR_Opr reg = new_register(type); | |
93 set_vreg_flag(reg, callee_saved); | |
94 return reg; | |
95 } | |
96 | |
97 | |
98 LIR_Opr LIRGenerator::rlock_byte(BasicType type) { | |
99 return new_register(T_INT); | |
100 } | |
101 | |
102 | |
103 | |
104 | |
105 | |
106 //--------- loading items into registers -------------------------------- | |
107 | |
108 // SPARC cannot inline all constants | |
109 bool LIRGenerator::can_store_as_constant(Value v, BasicType type) const { | |
110 if (v->type()->as_IntConstant() != NULL) { | |
111 return v->type()->as_IntConstant()->value() == 0; | |
112 } else if (v->type()->as_LongConstant() != NULL) { | |
113 return v->type()->as_LongConstant()->value() == 0L; | |
114 } else if (v->type()->as_ObjectConstant() != NULL) { | |
115 return v->type()->as_ObjectConstant()->value()->is_null_object(); | |
116 } else { | |
117 return false; | |
118 } | |
119 } | |
120 | |
121 | |
122 // only simm13 constants can be inlined | |
123 bool LIRGenerator:: can_inline_as_constant(Value i) const { | |
124 if (i->type()->as_IntConstant() != NULL) { | |
125 return Assembler::is_simm13(i->type()->as_IntConstant()->value()); | |
126 } else { | |
127 return can_store_as_constant(i, as_BasicType(i->type())); | |
128 } | |
129 } | |
130 | |
131 | |
132 bool LIRGenerator:: can_inline_as_constant(LIR_Const* c) const { | |
133 if (c->type() == T_INT) { | |
134 return Assembler::is_simm13(c->as_jint()); | |
135 } | |
136 return false; | |
137 } | |
138 | |
139 | |
140 LIR_Opr LIRGenerator::safepoint_poll_register() { | |
141 return new_register(T_INT); | |
142 } | |
143 | |
144 | |
145 | |
146 LIR_Address* LIRGenerator::generate_address(LIR_Opr base, LIR_Opr index, | |
147 int shift, int disp, BasicType type) { | |
148 assert(base->is_register(), "must be"); | |
149 | |
150 // accumulate fixed displacements | |
151 if (index->is_constant()) { | |
152 disp += index->as_constant_ptr()->as_jint() << shift; | |
153 index = LIR_OprFact::illegalOpr; | |
154 } | |
155 | |
156 if (index->is_register()) { | |
157 // apply the shift and accumulate the displacement | |
158 if (shift > 0) { | |
1060 | 159 LIR_Opr tmp = new_pointer_register(); |
0 | 160 __ shift_left(index, shift, tmp); |
161 index = tmp; | |
162 } | |
163 if (disp != 0) { | |
1060 | 164 LIR_Opr tmp = new_pointer_register(); |
0 | 165 if (Assembler::is_simm13(disp)) { |
1060 | 166 __ add(tmp, LIR_OprFact::intptrConst(disp), tmp); |
0 | 167 index = tmp; |
168 } else { | |
1060 | 169 __ move(LIR_OprFact::intptrConst(disp), tmp); |
0 | 170 __ add(tmp, index, tmp); |
171 index = tmp; | |
172 } | |
173 disp = 0; | |
174 } | |
175 } else if (disp != 0 && !Assembler::is_simm13(disp)) { | |
176 // index is illegal so replace it with the displacement loaded into a register | |
1060 | 177 index = new_pointer_register(); |
178 __ move(LIR_OprFact::intptrConst(disp), index); | |
0 | 179 disp = 0; |
180 } | |
181 | |
182 // at this point we either have base + index or base + displacement | |
183 if (disp == 0) { | |
184 return new LIR_Address(base, index, type); | |
185 } else { | |
186 assert(Assembler::is_simm13(disp), "must be"); | |
187 return new LIR_Address(base, disp, type); | |
188 } | |
189 } | |
190 | |
191 | |
192 LIR_Address* LIRGenerator::emit_array_address(LIR_Opr array_opr, LIR_Opr index_opr, | |
193 BasicType type, bool needs_card_mark) { | |
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194 int elem_size = type2aelembytes(type); |
0 | 195 int shift = exact_log2(elem_size); |
196 | |
197 LIR_Opr base_opr; | |
198 int offset = arrayOopDesc::base_offset_in_bytes(type); | |
199 | |
200 if (index_opr->is_constant()) { | |
201 int i = index_opr->as_constant_ptr()->as_jint(); | |
202 int array_offset = i * elem_size; | |
203 if (Assembler::is_simm13(array_offset + offset)) { | |
204 base_opr = array_opr; | |
205 offset = array_offset + offset; | |
206 } else { | |
207 base_opr = new_pointer_register(); | |
208 if (Assembler::is_simm13(array_offset)) { | |
209 __ add(array_opr, LIR_OprFact::intptrConst(array_offset), base_opr); | |
210 } else { | |
211 __ move(LIR_OprFact::intptrConst(array_offset), base_opr); | |
212 __ add(base_opr, array_opr, base_opr); | |
213 } | |
214 } | |
215 } else { | |
216 #ifdef _LP64 | |
217 if (index_opr->type() == T_INT) { | |
218 LIR_Opr tmp = new_register(T_LONG); | |
219 __ convert(Bytecodes::_i2l, index_opr, tmp); | |
220 index_opr = tmp; | |
221 } | |
222 #endif | |
223 | |
224 base_opr = new_pointer_register(); | |
225 assert (index_opr->is_register(), "Must be register"); | |
226 if (shift > 0) { | |
227 __ shift_left(index_opr, shift, base_opr); | |
228 __ add(base_opr, array_opr, base_opr); | |
229 } else { | |
230 __ add(index_opr, array_opr, base_opr); | |
231 } | |
232 } | |
233 if (needs_card_mark) { | |
234 LIR_Opr ptr = new_pointer_register(); | |
235 __ add(base_opr, LIR_OprFact::intptrConst(offset), ptr); | |
1572 | 236 return new LIR_Address(ptr, type); |
0 | 237 } else { |
238 return new LIR_Address(base_opr, offset, type); | |
239 } | |
240 } | |
241 | |
1783 | 242 LIR_Opr LIRGenerator::load_immediate(int x, BasicType type) { |
243 LIR_Opr r; | |
244 if (type == T_LONG) { | |
245 r = LIR_OprFact::longConst(x); | |
246 } else if (type == T_INT) { | |
247 r = LIR_OprFact::intConst(x); | |
248 } else { | |
249 ShouldNotReachHere(); | |
250 } | |
251 if (!Assembler::is_simm13(x)) { | |
252 LIR_Opr tmp = new_register(type); | |
253 __ move(r, tmp); | |
254 return tmp; | |
255 } | |
256 return r; | |
257 } | |
0 | 258 |
1783 | 259 void LIRGenerator::increment_counter(address counter, BasicType type, int step) { |
0 | 260 LIR_Opr pointer = new_pointer_register(); |
261 __ move(LIR_OprFact::intptrConst(counter), pointer); | |
1783 | 262 LIR_Address* addr = new LIR_Address(pointer, type); |
0 | 263 increment_counter(addr, step); |
264 } | |
265 | |
266 void LIRGenerator::increment_counter(LIR_Address* addr, int step) { | |
1783 | 267 LIR_Opr temp = new_register(addr->type()); |
0 | 268 __ move(addr, temp); |
1783 | 269 __ add(temp, load_immediate(step, addr->type()), temp); |
0 | 270 __ move(temp, addr); |
271 } | |
272 | |
273 void LIRGenerator::cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info) { | |
274 LIR_Opr o7opr = FrameMap::O7_opr; | |
275 __ load(new LIR_Address(base, disp, T_INT), o7opr, info); | |
276 __ cmp(condition, o7opr, c); | |
277 } | |
278 | |
279 | |
280 void LIRGenerator::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Opr base, int disp, BasicType type, CodeEmitInfo* info) { | |
281 LIR_Opr o7opr = FrameMap::O7_opr; | |
282 __ load(new LIR_Address(base, disp, type), o7opr, info); | |
283 __ cmp(condition, reg, o7opr); | |
284 } | |
285 | |
286 | |
287 void LIRGenerator::cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Opr base, LIR_Opr disp, BasicType type, CodeEmitInfo* info) { | |
288 LIR_Opr o7opr = FrameMap::O7_opr; | |
289 __ load(new LIR_Address(base, disp, type), o7opr, info); | |
290 __ cmp(condition, reg, o7opr); | |
291 } | |
292 | |
293 | |
294 bool LIRGenerator::strength_reduce_multiply(LIR_Opr left, int c, LIR_Opr result, LIR_Opr tmp) { | |
295 assert(left != result, "should be different registers"); | |
296 if (is_power_of_2(c + 1)) { | |
297 __ shift_left(left, log2_intptr(c + 1), result); | |
298 __ sub(result, left, result); | |
299 return true; | |
300 } else if (is_power_of_2(c - 1)) { | |
301 __ shift_left(left, log2_intptr(c - 1), result); | |
302 __ add(result, left, result); | |
303 return true; | |
304 } | |
305 return false; | |
306 } | |
307 | |
308 | |
309 void LIRGenerator::store_stack_parameter (LIR_Opr item, ByteSize offset_from_sp) { | |
310 BasicType t = item->type(); | |
311 LIR_Opr sp_opr = FrameMap::SP_opr; | |
312 if ((t == T_LONG || t == T_DOUBLE) && | |
313 ((in_bytes(offset_from_sp) - STACK_BIAS) % 8 != 0)) { | |
314 __ unaligned_move(item, new LIR_Address(sp_opr, in_bytes(offset_from_sp), t)); | |
315 } else { | |
316 __ move(item, new LIR_Address(sp_opr, in_bytes(offset_from_sp), t)); | |
317 } | |
318 } | |
319 | |
320 //---------------------------------------------------------------------- | |
321 // visitor functions | |
322 //---------------------------------------------------------------------- | |
323 | |
324 | |
325 void LIRGenerator::do_StoreIndexed(StoreIndexed* x) { | |
1819 | 326 assert(x->is_pinned(),""); |
8860 | 327 bool needs_range_check = x->compute_needs_range_check(); |
0 | 328 bool use_length = x->length() != NULL; |
329 bool obj_store = x->elt_type() == T_ARRAY || x->elt_type() == T_OBJECT; | |
330 bool needs_store_check = obj_store && (x->value()->as_Constant() == NULL || | |
3957 | 331 !get_jobject_constant(x->value())->is_null_object() || |
332 x->should_profile()); | |
0 | 333 |
334 LIRItem array(x->array(), this); | |
335 LIRItem index(x->index(), this); | |
336 LIRItem value(x->value(), this); | |
337 LIRItem length(this); | |
338 | |
339 array.load_item(); | |
340 index.load_nonconstant(); | |
341 | |
8860 | 342 if (use_length && needs_range_check) { |
343 length.set_instruction(x->length()); | |
344 length.load_item(); | |
0 | 345 } |
346 if (needs_store_check) { | |
347 value.load_item(); | |
348 } else { | |
349 value.load_for_store(x->elt_type()); | |
350 } | |
351 | |
352 set_no_result(x); | |
353 | |
354 // the CodeEmitInfo must be duplicated for each different | |
355 // LIR-instruction because spilling can occur anywhere between two | |
356 // instructions and so the debug information must be different | |
357 CodeEmitInfo* range_check_info = state_for(x); | |
358 CodeEmitInfo* null_check_info = NULL; | |
359 if (x->needs_null_check()) { | |
360 null_check_info = new CodeEmitInfo(range_check_info); | |
361 } | |
362 | |
363 // emit array address setup early so it schedules better | |
364 LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), obj_store); | |
365 | |
366 if (GenerateRangeChecks && needs_range_check) { | |
367 if (use_length) { | |
368 __ cmp(lir_cond_belowEqual, length.result(), index.result()); | |
369 __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result())); | |
370 } else { | |
371 array_range_check(array.result(), index.result(), null_check_info, range_check_info); | |
372 // range_check also does the null check | |
373 null_check_info = NULL; | |
374 } | |
375 } | |
376 | |
377 if (GenerateArrayStoreCheck && needs_store_check) { | |
378 LIR_Opr tmp1 = FrameMap::G1_opr; | |
379 LIR_Opr tmp2 = FrameMap::G3_opr; | |
380 LIR_Opr tmp3 = FrameMap::G5_opr; | |
381 | |
382 CodeEmitInfo* store_check_info = new CodeEmitInfo(range_check_info); | |
3957 | 383 __ store_check(value.result(), array.result(), tmp1, tmp2, tmp3, store_check_info, x->profiled_method(), x->profiled_bci()); |
0 | 384 } |
385 | |
342
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386 if (obj_store) { |
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387 // Needs GC write barriers. |
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388 pre_barrier(LIR_OprFact::address(array_addr), LIR_OprFact::illegalOpr /* pre_val */, |
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389 true /* do_load */, false /* patch */, NULL); |
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390 } |
0 | 391 __ move(value.result(), array_addr, null_check_info); |
392 if (obj_store) { | |
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393 // Precise card mark |
0 | 394 post_barrier(LIR_OprFact::address(array_addr), value.result()); |
395 } | |
396 } | |
397 | |
398 | |
399 void LIRGenerator::do_MonitorEnter(MonitorEnter* x) { | |
1819 | 400 assert(x->is_pinned(),""); |
0 | 401 LIRItem obj(x->obj(), this); |
402 obj.load_item(); | |
403 | |
404 set_no_result(x); | |
405 | |
406 LIR_Opr lock = FrameMap::G1_opr; | |
407 LIR_Opr scratch = FrameMap::G3_opr; | |
408 LIR_Opr hdr = FrameMap::G4_opr; | |
409 | |
410 CodeEmitInfo* info_for_exception = NULL; | |
411 if (x->needs_null_check()) { | |
1819 | 412 info_for_exception = state_for(x); |
0 | 413 } |
414 | |
415 // this CodeEmitInfo must not have the xhandlers because here the | |
416 // object is already locked (xhandlers expects object to be unlocked) | |
417 CodeEmitInfo* info = state_for(x, x->state(), true); | |
418 monitor_enter(obj.result(), lock, hdr, scratch, x->monitor_no(), info_for_exception, info); | |
419 } | |
420 | |
421 | |
422 void LIRGenerator::do_MonitorExit(MonitorExit* x) { | |
1819 | 423 assert(x->is_pinned(),""); |
0 | 424 LIRItem obj(x->obj(), this); |
425 obj.dont_load_item(); | |
426 | |
427 set_no_result(x); | |
428 LIR_Opr lock = FrameMap::G1_opr; | |
429 LIR_Opr hdr = FrameMap::G3_opr; | |
430 LIR_Opr obj_temp = FrameMap::G4_opr; | |
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431 monitor_exit(obj_temp, lock, hdr, LIR_OprFact::illegalOpr, x->monitor_no()); |
0 | 432 } |
433 | |
434 | |
435 // _ineg, _lneg, _fneg, _dneg | |
436 void LIRGenerator::do_NegateOp(NegateOp* x) { | |
437 LIRItem value(x->x(), this); | |
438 value.load_item(); | |
439 LIR_Opr reg = rlock_result(x); | |
440 __ negate(value.result(), reg); | |
441 } | |
442 | |
443 | |
444 | |
445 // for _fadd, _fmul, _fsub, _fdiv, _frem | |
446 // _dadd, _dmul, _dsub, _ddiv, _drem | |
447 void LIRGenerator::do_ArithmeticOp_FPU(ArithmeticOp* x) { | |
448 switch (x->op()) { | |
449 case Bytecodes::_fadd: | |
450 case Bytecodes::_fmul: | |
451 case Bytecodes::_fsub: | |
452 case Bytecodes::_fdiv: | |
453 case Bytecodes::_dadd: | |
454 case Bytecodes::_dmul: | |
455 case Bytecodes::_dsub: | |
456 case Bytecodes::_ddiv: { | |
457 LIRItem left(x->x(), this); | |
458 LIRItem right(x->y(), this); | |
459 left.load_item(); | |
460 right.load_item(); | |
461 rlock_result(x); | |
462 arithmetic_op_fpu(x->op(), x->operand(), left.result(), right.result(), x->is_strictfp()); | |
463 } | |
464 break; | |
465 | |
466 case Bytecodes::_frem: | |
467 case Bytecodes::_drem: { | |
468 address entry; | |
469 switch (x->op()) { | |
470 case Bytecodes::_frem: | |
471 entry = CAST_FROM_FN_PTR(address, SharedRuntime::frem); | |
472 break; | |
473 case Bytecodes::_drem: | |
474 entry = CAST_FROM_FN_PTR(address, SharedRuntime::drem); | |
475 break; | |
476 default: | |
477 ShouldNotReachHere(); | |
478 } | |
479 LIR_Opr result = call_runtime(x->x(), x->y(), entry, x->type(), NULL); | |
480 set_result(x, result); | |
481 } | |
482 break; | |
483 | |
484 default: ShouldNotReachHere(); | |
485 } | |
486 } | |
487 | |
488 | |
489 // for _ladd, _lmul, _lsub, _ldiv, _lrem | |
490 void LIRGenerator::do_ArithmeticOp_Long(ArithmeticOp* x) { | |
491 switch (x->op()) { | |
492 case Bytecodes::_lrem: | |
493 case Bytecodes::_lmul: | |
494 case Bytecodes::_ldiv: { | |
495 | |
496 if (x->op() == Bytecodes::_ldiv || x->op() == Bytecodes::_lrem) { | |
497 LIRItem right(x->y(), this); | |
498 right.load_item(); | |
499 | |
500 CodeEmitInfo* info = state_for(x); | |
501 LIR_Opr item = right.result(); | |
502 assert(item->is_register(), "must be"); | |
503 __ cmp(lir_cond_equal, item, LIR_OprFact::longConst(0)); | |
504 __ branch(lir_cond_equal, T_LONG, new DivByZeroStub(info)); | |
505 } | |
506 | |
507 address entry; | |
508 switch (x->op()) { | |
509 case Bytecodes::_lrem: | |
510 entry = CAST_FROM_FN_PTR(address, SharedRuntime::lrem); | |
511 break; // check if dividend is 0 is done elsewhere | |
512 case Bytecodes::_ldiv: | |
513 entry = CAST_FROM_FN_PTR(address, SharedRuntime::ldiv); | |
514 break; // check if dividend is 0 is done elsewhere | |
515 case Bytecodes::_lmul: | |
516 entry = CAST_FROM_FN_PTR(address, SharedRuntime::lmul); | |
517 break; | |
518 default: | |
519 ShouldNotReachHere(); | |
520 } | |
521 | |
522 // order of arguments to runtime call is reversed. | |
523 LIR_Opr result = call_runtime(x->y(), x->x(), entry, x->type(), NULL); | |
524 set_result(x, result); | |
525 break; | |
526 } | |
527 case Bytecodes::_ladd: | |
528 case Bytecodes::_lsub: { | |
529 LIRItem left(x->x(), this); | |
530 LIRItem right(x->y(), this); | |
531 left.load_item(); | |
532 right.load_item(); | |
533 rlock_result(x); | |
534 | |
535 arithmetic_op_long(x->op(), x->operand(), left.result(), right.result(), NULL); | |
536 break; | |
537 } | |
538 default: ShouldNotReachHere(); | |
539 } | |
540 } | |
541 | |
542 | |
543 // Returns if item is an int constant that can be represented by a simm13 | |
544 static bool is_simm13(LIR_Opr item) { | |
545 if (item->is_constant() && item->type() == T_INT) { | |
546 return Assembler::is_simm13(item->as_constant_ptr()->as_jint()); | |
547 } else { | |
548 return false; | |
549 } | |
550 } | |
551 | |
552 | |
553 // for: _iadd, _imul, _isub, _idiv, _irem | |
554 void LIRGenerator::do_ArithmeticOp_Int(ArithmeticOp* x) { | |
555 bool is_div_rem = x->op() == Bytecodes::_idiv || x->op() == Bytecodes::_irem; | |
556 LIRItem left(x->x(), this); | |
557 LIRItem right(x->y(), this); | |
558 // missing test if instr is commutative and if we should swap | |
559 right.load_nonconstant(); | |
560 assert(right.is_constant() || right.is_register(), "wrong state of right"); | |
561 left.load_item(); | |
562 rlock_result(x); | |
563 if (is_div_rem) { | |
564 CodeEmitInfo* info = state_for(x); | |
565 LIR_Opr tmp = FrameMap::G1_opr; | |
566 if (x->op() == Bytecodes::_irem) { | |
567 __ irem(left.result(), right.result(), x->operand(), tmp, info); | |
568 } else if (x->op() == Bytecodes::_idiv) { | |
569 __ idiv(left.result(), right.result(), x->operand(), tmp, info); | |
570 } | |
571 } else { | |
572 arithmetic_op_int(x->op(), x->operand(), left.result(), right.result(), FrameMap::G1_opr); | |
573 } | |
574 } | |
575 | |
576 | |
577 void LIRGenerator::do_ArithmeticOp(ArithmeticOp* x) { | |
578 ValueTag tag = x->type()->tag(); | |
579 assert(x->x()->type()->tag() == tag && x->y()->type()->tag() == tag, "wrong parameters"); | |
580 switch (tag) { | |
581 case floatTag: | |
582 case doubleTag: do_ArithmeticOp_FPU(x); return; | |
583 case longTag: do_ArithmeticOp_Long(x); return; | |
584 case intTag: do_ArithmeticOp_Int(x); return; | |
585 } | |
586 ShouldNotReachHere(); | |
587 } | |
588 | |
589 | |
590 // _ishl, _lshl, _ishr, _lshr, _iushr, _lushr | |
591 void LIRGenerator::do_ShiftOp(ShiftOp* x) { | |
592 LIRItem value(x->x(), this); | |
593 LIRItem count(x->y(), this); | |
594 // Long shift destroys count register | |
595 if (value.type()->is_long()) { | |
596 count.set_destroys_register(); | |
597 } | |
598 value.load_item(); | |
599 // the old backend doesn't support this | |
600 if (count.is_constant() && count.type()->as_IntConstant() != NULL && value.type()->is_int()) { | |
601 jint c = count.get_jint_constant() & 0x1f; | |
602 assert(c >= 0 && c < 32, "should be small"); | |
603 count.dont_load_item(); | |
604 } else { | |
605 count.load_item(); | |
606 } | |
607 LIR_Opr reg = rlock_result(x); | |
608 shift_op(x->op(), reg, value.result(), count.result(), LIR_OprFact::illegalOpr); | |
609 } | |
610 | |
611 | |
612 // _iand, _land, _ior, _lor, _ixor, _lxor | |
613 void LIRGenerator::do_LogicOp(LogicOp* x) { | |
614 LIRItem left(x->x(), this); | |
615 LIRItem right(x->y(), this); | |
616 | |
617 left.load_item(); | |
618 right.load_nonconstant(); | |
619 LIR_Opr reg = rlock_result(x); | |
620 | |
621 logic_op(x->op(), reg, left.result(), right.result()); | |
622 } | |
623 | |
624 | |
625 | |
626 // _lcmp, _fcmpl, _fcmpg, _dcmpl, _dcmpg | |
627 void LIRGenerator::do_CompareOp(CompareOp* x) { | |
628 LIRItem left(x->x(), this); | |
629 LIRItem right(x->y(), this); | |
630 left.load_item(); | |
631 right.load_item(); | |
632 LIR_Opr reg = rlock_result(x); | |
633 if (x->x()->type()->is_float_kind()) { | |
634 Bytecodes::Code code = x->op(); | |
635 __ fcmp2int(left.result(), right.result(), reg, (code == Bytecodes::_fcmpl || code == Bytecodes::_dcmpl)); | |
636 } else if (x->x()->type()->tag() == longTag) { | |
637 __ lcmp2int(left.result(), right.result(), reg); | |
638 } else { | |
639 Unimplemented(); | |
640 } | |
641 } | |
642 | |
643 | |
644 void LIRGenerator::do_CompareAndSwap(Intrinsic* x, ValueType* type) { | |
645 assert(x->number_of_arguments() == 4, "wrong type"); | |
646 LIRItem obj (x->argument_at(0), this); // object | |
647 LIRItem offset(x->argument_at(1), this); // offset of field | |
648 LIRItem cmp (x->argument_at(2), this); // value to compare with field | |
649 LIRItem val (x->argument_at(3), this); // replace field with val if matches cmp | |
650 | |
651 // Use temps to avoid kills | |
652 LIR_Opr t1 = FrameMap::G1_opr; | |
653 LIR_Opr t2 = FrameMap::G3_opr; | |
1873 | 654 LIR_Opr addr = new_pointer_register(); |
0 | 655 |
656 // get address of field | |
657 obj.load_item(); | |
658 offset.load_item(); | |
659 cmp.load_item(); | |
660 val.load_item(); | |
661 | |
662 __ add(obj.result(), offset.result(), addr); | |
663 | |
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664 if (type == objectType) { // Write-barrier needed for Object fields. |
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665 pre_barrier(addr, LIR_OprFact::illegalOpr /* pre_val */, |
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666 true /* do_load */, false /* patch */, NULL); |
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667 } |
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668 |
0 | 669 if (type == objectType) |
670 __ cas_obj(addr, cmp.result(), val.result(), t1, t2); | |
671 else if (type == intType) | |
672 __ cas_int(addr, cmp.result(), val.result(), t1, t2); | |
673 else if (type == longType) | |
674 __ cas_long(addr, cmp.result(), val.result(), t1, t2); | |
675 else { | |
676 ShouldNotReachHere(); | |
677 } | |
678 // generate conditional move of boolean result | |
679 LIR_Opr result = rlock_result(x); | |
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680 __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), |
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681 result, as_BasicType(type)); |
0 | 682 if (type == objectType) { // Write-barrier needed for Object fields. |
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683 // Precise card mark since could either be object or array |
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684 post_barrier(addr, val.result()); |
0 | 685 } |
686 } | |
687 | |
688 | |
689 void LIRGenerator::do_MathIntrinsic(Intrinsic* x) { | |
690 switch (x->id()) { | |
691 case vmIntrinsics::_dabs: | |
692 case vmIntrinsics::_dsqrt: { | |
693 assert(x->number_of_arguments() == 1, "wrong type"); | |
694 LIRItem value(x->argument_at(0), this); | |
695 value.load_item(); | |
696 LIR_Opr dst = rlock_result(x); | |
697 | |
698 switch (x->id()) { | |
699 case vmIntrinsics::_dsqrt: { | |
700 __ sqrt(value.result(), dst, LIR_OprFact::illegalOpr); | |
701 break; | |
702 } | |
703 case vmIntrinsics::_dabs: { | |
704 __ abs(value.result(), dst, LIR_OprFact::illegalOpr); | |
705 break; | |
706 } | |
707 } | |
708 break; | |
709 } | |
710 case vmIntrinsics::_dlog10: // fall through | |
711 case vmIntrinsics::_dlog: // fall through | |
712 case vmIntrinsics::_dsin: // fall through | |
713 case vmIntrinsics::_dtan: // fall through | |
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714 case vmIntrinsics::_dcos: // fall through |
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715 case vmIntrinsics::_dexp: { |
0 | 716 assert(x->number_of_arguments() == 1, "wrong type"); |
717 | |
718 address runtime_entry = NULL; | |
719 switch (x->id()) { | |
720 case vmIntrinsics::_dsin: | |
721 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dsin); | |
722 break; | |
723 case vmIntrinsics::_dcos: | |
724 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dcos); | |
725 break; | |
726 case vmIntrinsics::_dtan: | |
727 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dtan); | |
728 break; | |
729 case vmIntrinsics::_dlog: | |
730 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dlog); | |
731 break; | |
732 case vmIntrinsics::_dlog10: | |
733 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dlog10); | |
734 break; | |
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735 case vmIntrinsics::_dexp: |
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736 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dexp); |
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737 break; |
0 | 738 default: |
739 ShouldNotReachHere(); | |
740 } | |
741 | |
742 LIR_Opr result = call_runtime(x->argument_at(0), runtime_entry, x->type(), NULL); | |
743 set_result(x, result); | |
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744 break; |
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745 } |
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746 case vmIntrinsics::_dpow: { |
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747 assert(x->number_of_arguments() == 2, "wrong type"); |
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748 address runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dpow); |
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749 LIR_Opr result = call_runtime(x->argument_at(0), x->argument_at(1), runtime_entry, x->type(), NULL); |
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750 set_result(x, result); |
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751 break; |
0 | 752 } |
753 } | |
754 } | |
755 | |
756 | |
757 void LIRGenerator::do_ArrayCopy(Intrinsic* x) { | |
758 assert(x->number_of_arguments() == 5, "wrong type"); | |
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759 |
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760 // Make all state_for calls early since they can emit code |
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761 CodeEmitInfo* info = state_for(x, x->state()); |
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762 |
0 | 763 // Note: spill caller save before setting the item |
764 LIRItem src (x->argument_at(0), this); | |
765 LIRItem src_pos (x->argument_at(1), this); | |
766 LIRItem dst (x->argument_at(2), this); | |
767 LIRItem dst_pos (x->argument_at(3), this); | |
768 LIRItem length (x->argument_at(4), this); | |
769 // load all values in callee_save_registers, as this makes the | |
770 // parameter passing to the fast case simpler | |
771 src.load_item_force (rlock_callee_saved(T_OBJECT)); | |
772 src_pos.load_item_force (rlock_callee_saved(T_INT)); | |
773 dst.load_item_force (rlock_callee_saved(T_OBJECT)); | |
774 dst_pos.load_item_force (rlock_callee_saved(T_INT)); | |
775 length.load_item_force (rlock_callee_saved(T_INT)); | |
776 | |
777 int flags; | |
778 ciArrayKlass* expected_type; | |
779 arraycopy_helper(x, &flags, &expected_type); | |
780 | |
781 __ arraycopy(src.result(), src_pos.result(), dst.result(), dst_pos.result(), | |
782 length.result(), rlock_callee_saved(T_INT), | |
783 expected_type, flags, info); | |
784 set_no_result(x); | |
785 } | |
786 | |
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787 void LIRGenerator::do_update_CRC32(Intrinsic* x) { |
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788 fatal("CRC32 intrinsic is not implemented on this platform"); |
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789 } |
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790 |
0 | 791 // _i2l, _i2f, _i2d, _l2i, _l2f, _l2d, _f2i, _f2l, _f2d, _d2i, _d2l, _d2f |
792 // _i2b, _i2c, _i2s | |
793 void LIRGenerator::do_Convert(Convert* x) { | |
794 | |
795 switch (x->op()) { | |
796 case Bytecodes::_f2l: | |
797 case Bytecodes::_d2l: | |
798 case Bytecodes::_d2i: | |
799 case Bytecodes::_l2f: | |
800 case Bytecodes::_l2d: { | |
801 | |
802 address entry; | |
803 switch (x->op()) { | |
804 case Bytecodes::_l2f: | |
805 entry = CAST_FROM_FN_PTR(address, SharedRuntime::l2f); | |
806 break; | |
807 case Bytecodes::_l2d: | |
808 entry = CAST_FROM_FN_PTR(address, SharedRuntime::l2d); | |
809 break; | |
810 case Bytecodes::_f2l: | |
811 entry = CAST_FROM_FN_PTR(address, SharedRuntime::f2l); | |
812 break; | |
813 case Bytecodes::_d2l: | |
814 entry = CAST_FROM_FN_PTR(address, SharedRuntime::d2l); | |
815 break; | |
816 case Bytecodes::_d2i: | |
817 entry = CAST_FROM_FN_PTR(address, SharedRuntime::d2i); | |
818 break; | |
819 default: | |
820 ShouldNotReachHere(); | |
821 } | |
822 LIR_Opr result = call_runtime(x->value(), entry, x->type(), NULL); | |
823 set_result(x, result); | |
824 break; | |
825 } | |
826 | |
827 case Bytecodes::_i2f: | |
828 case Bytecodes::_i2d: { | |
829 LIRItem value(x->value(), this); | |
830 | |
831 LIR_Opr reg = rlock_result(x); | |
832 // To convert an int to double, we need to load the 32-bit int | |
833 // from memory into a single precision floating point register | |
834 // (even numbered). Then the sparc fitod instruction takes care | |
835 // of the conversion. This is a bit ugly, but is the best way to | |
836 // get the int value in a single precision floating point register | |
837 value.load_item(); | |
838 LIR_Opr tmp = force_to_spill(value.result(), T_FLOAT); | |
839 __ convert(x->op(), tmp, reg); | |
840 break; | |
841 } | |
842 break; | |
843 | |
844 case Bytecodes::_i2l: | |
845 case Bytecodes::_i2b: | |
846 case Bytecodes::_i2c: | |
847 case Bytecodes::_i2s: | |
848 case Bytecodes::_l2i: | |
849 case Bytecodes::_f2d: | |
850 case Bytecodes::_d2f: { // inline code | |
851 LIRItem value(x->value(), this); | |
852 | |
853 value.load_item(); | |
854 LIR_Opr reg = rlock_result(x); | |
855 __ convert(x->op(), value.result(), reg, false); | |
856 } | |
857 break; | |
858 | |
859 case Bytecodes::_f2i: { | |
860 LIRItem value (x->value(), this); | |
861 value.set_destroys_register(); | |
862 value.load_item(); | |
863 LIR_Opr reg = rlock_result(x); | |
864 set_vreg_flag(reg, must_start_in_memory); | |
865 __ convert(x->op(), value.result(), reg, false); | |
866 } | |
867 break; | |
868 | |
869 default: ShouldNotReachHere(); | |
870 } | |
871 } | |
872 | |
873 | |
874 void LIRGenerator::do_NewInstance(NewInstance* x) { | |
875 // This instruction can be deoptimized in the slow path : use | |
876 // O0 as result register. | |
877 const LIR_Opr reg = result_register_for(x->type()); | |
1819 | 878 #ifndef PRODUCT |
0 | 879 if (PrintNotLoaded && !x->klass()->is_loaded()) { |
1819 | 880 tty->print_cr(" ###class not loaded at new bci %d", x->printable_bci()); |
0 | 881 } |
1819 | 882 #endif |
0 | 883 CodeEmitInfo* info = state_for(x, x->state()); |
884 LIR_Opr tmp1 = FrameMap::G1_oop_opr; | |
885 LIR_Opr tmp2 = FrameMap::G3_oop_opr; | |
886 LIR_Opr tmp3 = FrameMap::G4_oop_opr; | |
887 LIR_Opr tmp4 = FrameMap::O1_oop_opr; | |
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888 LIR_Opr klass_reg = FrameMap::G5_metadata_opr; |
0 | 889 new_instance(reg, x->klass(), tmp1, tmp2, tmp3, tmp4, klass_reg, info); |
890 LIR_Opr result = rlock_result(x); | |
891 __ move(reg, result); | |
892 } | |
893 | |
894 | |
895 void LIRGenerator::do_NewTypeArray(NewTypeArray* x) { | |
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896 // Evaluate state_for early since it may emit code |
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897 CodeEmitInfo* info = state_for(x, x->state()); |
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898 |
0 | 899 LIRItem length(x->length(), this); |
900 length.load_item(); | |
901 | |
902 LIR_Opr reg = result_register_for(x->type()); | |
903 LIR_Opr tmp1 = FrameMap::G1_oop_opr; | |
904 LIR_Opr tmp2 = FrameMap::G3_oop_opr; | |
905 LIR_Opr tmp3 = FrameMap::G4_oop_opr; | |
906 LIR_Opr tmp4 = FrameMap::O1_oop_opr; | |
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907 LIR_Opr klass_reg = FrameMap::G5_metadata_opr; |
0 | 908 LIR_Opr len = length.result(); |
909 BasicType elem_type = x->elt_type(); | |
910 | |
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911 __ metadata2reg(ciTypeArrayKlass::make(elem_type)->constant_encoding(), klass_reg); |
0 | 912 |
913 CodeStub* slow_path = new NewTypeArrayStub(klass_reg, len, reg, info); | |
914 __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, elem_type, klass_reg, slow_path); | |
915 | |
916 LIR_Opr result = rlock_result(x); | |
917 __ move(reg, result); | |
918 } | |
919 | |
920 | |
921 void LIRGenerator::do_NewObjectArray(NewObjectArray* x) { | |
928
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922 // Evaluate state_for early since it may emit code. |
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923 CodeEmitInfo* info = state_for(x, x->state()); |
0 | 924 // in case of patching (i.e., object class is not yet loaded), we need to reexecute the instruction |
925 // and therefore provide the state before the parameters have been consumed | |
926 CodeEmitInfo* patching_info = NULL; | |
927 if (!x->klass()->is_loaded() || PatchALot) { | |
928 patching_info = state_for(x, x->state_before()); | |
929 } | |
930 | |
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931 LIRItem length(x->length(), this); |
0 | 932 length.load_item(); |
933 | |
934 const LIR_Opr reg = result_register_for(x->type()); | |
935 LIR_Opr tmp1 = FrameMap::G1_oop_opr; | |
936 LIR_Opr tmp2 = FrameMap::G3_oop_opr; | |
937 LIR_Opr tmp3 = FrameMap::G4_oop_opr; | |
938 LIR_Opr tmp4 = FrameMap::O1_oop_opr; | |
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939 LIR_Opr klass_reg = FrameMap::G5_metadata_opr; |
0 | 940 LIR_Opr len = length.result(); |
941 | |
942 CodeStub* slow_path = new NewObjectArrayStub(klass_reg, len, reg, info); | |
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943 ciMetadata* obj = ciObjArrayKlass::make(x->klass()); |
0 | 944 if (obj == ciEnv::unloaded_ciobjarrayklass()) { |
945 BAILOUT("encountered unloaded_ciobjarrayklass due to out of memory error"); | |
946 } | |
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947 klass2reg_with_patching(klass_reg, obj, patching_info); |
0 | 948 __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, T_OBJECT, klass_reg, slow_path); |
949 | |
950 LIR_Opr result = rlock_result(x); | |
951 __ move(reg, result); | |
952 } | |
953 | |
954 | |
955 void LIRGenerator::do_NewMultiArray(NewMultiArray* x) { | |
956 Values* dims = x->dims(); | |
957 int i = dims->length(); | |
958 LIRItemList* items = new LIRItemList(dims->length(), NULL); | |
959 while (i-- > 0) { | |
960 LIRItem* size = new LIRItem(dims->at(i), this); | |
961 items->at_put(i, size); | |
962 } | |
963 | |
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964 // Evaluate state_for early since it may emit code. |
0 | 965 CodeEmitInfo* patching_info = NULL; |
966 if (!x->klass()->is_loaded() || PatchALot) { | |
967 patching_info = state_for(x, x->state_before()); | |
968 | |
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969 // Cannot re-use same xhandlers for multiple CodeEmitInfos, so |
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970 // clone all handlers (NOTE: Usually this is handled transparently |
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971 // by the CodeEmitInfo cloning logic in CodeStub constructors but |
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972 // is done explicitly here because a stub isn't being used). |
0 | 973 x->set_exception_handlers(new XHandlers(x->exception_handlers())); |
974 } | |
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975 CodeEmitInfo* info = state_for(x, x->state()); |
0 | 976 |
977 i = dims->length(); | |
978 while (i-- > 0) { | |
979 LIRItem* size = items->at(i); | |
980 size->load_item(); | |
981 store_stack_parameter (size->result(), | |
982 in_ByteSize(STACK_BIAS + | |
304 | 983 frame::memory_parameter_word_sp_offset * wordSize + |
984 i * sizeof(jint))); | |
0 | 985 } |
986 | |
987 // This instruction can be deoptimized in the slow path : use | |
988 // O0 as result register. | |
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989 const LIR_Opr klass_reg = FrameMap::O0_metadata_opr; |
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990 klass2reg_with_patching(klass_reg, x->klass(), patching_info); |
0 | 991 LIR_Opr rank = FrameMap::O1_opr; |
992 __ move(LIR_OprFact::intConst(x->rank()), rank); | |
993 LIR_Opr varargs = FrameMap::as_pointer_opr(O2); | |
994 int offset_from_sp = (frame::memory_parameter_word_sp_offset * wordSize) + STACK_BIAS; | |
995 __ add(FrameMap::SP_opr, | |
996 LIR_OprFact::intptrConst(offset_from_sp), | |
997 varargs); | |
998 LIR_OprList* args = new LIR_OprList(3); | |
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999 args->append(klass_reg); |
0 | 1000 args->append(rank); |
1001 args->append(varargs); | |
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1002 const LIR_Opr reg = result_register_for(x->type()); |
0 | 1003 __ call_runtime(Runtime1::entry_for(Runtime1::new_multi_array_id), |
1004 LIR_OprFact::illegalOpr, | |
1005 reg, args, info); | |
1006 | |
1007 LIR_Opr result = rlock_result(x); | |
1008 __ move(reg, result); | |
1009 } | |
1010 | |
1011 | |
1012 void LIRGenerator::do_BlockBegin(BlockBegin* x) { | |
1013 } | |
1014 | |
1015 | |
1016 void LIRGenerator::do_CheckCast(CheckCast* x) { | |
1017 LIRItem obj(x->obj(), this); | |
1018 CodeEmitInfo* patching_info = NULL; | |
1019 if (!x->klass()->is_loaded() || (PatchALot && !x->is_incompatible_class_change_check())) { | |
1020 // must do this before locking the destination register as an oop register, | |
1021 // and before the obj is loaded (so x->obj()->item() is valid for creating a debug info location) | |
1022 patching_info = state_for(x, x->state_before()); | |
1023 } | |
1024 obj.load_item(); | |
1025 LIR_Opr out_reg = rlock_result(x); | |
1026 CodeStub* stub; | |
1819 | 1027 CodeEmitInfo* info_for_exception = state_for(x); |
0 | 1028 |
1029 if (x->is_incompatible_class_change_check()) { | |
1030 assert(patching_info == NULL, "can't patch this"); | |
1031 stub = new SimpleExceptionStub(Runtime1::throw_incompatible_class_change_error_id, LIR_OprFact::illegalOpr, info_for_exception); | |
1032 } else { | |
1033 stub = new SimpleExceptionStub(Runtime1::throw_class_cast_exception_id, obj.result(), info_for_exception); | |
1034 } | |
1035 LIR_Opr tmp1 = FrameMap::G1_oop_opr; | |
1036 LIR_Opr tmp2 = FrameMap::G3_oop_opr; | |
1037 LIR_Opr tmp3 = FrameMap::G4_oop_opr; | |
1038 __ checkcast(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3, | |
1039 x->direct_compare(), info_for_exception, patching_info, stub, | |
1040 x->profiled_method(), x->profiled_bci()); | |
1041 } | |
1042 | |
1043 | |
1044 void LIRGenerator::do_InstanceOf(InstanceOf* x) { | |
1045 LIRItem obj(x->obj(), this); | |
1046 CodeEmitInfo* patching_info = NULL; | |
1047 if (!x->klass()->is_loaded() || PatchALot) { | |
1048 patching_info = state_for(x, x->state_before()); | |
1049 } | |
1050 // ensure the result register is not the input register because the result is initialized before the patching safepoint | |
1051 obj.load_item(); | |
1052 LIR_Opr out_reg = rlock_result(x); | |
1053 LIR_Opr tmp1 = FrameMap::G1_oop_opr; | |
1054 LIR_Opr tmp2 = FrameMap::G3_oop_opr; | |
1055 LIR_Opr tmp3 = FrameMap::G4_oop_opr; | |
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1056 __ instanceof(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3, |
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1057 x->direct_compare(), patching_info, |
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1058 x->profiled_method(), x->profiled_bci()); |
0 | 1059 } |
1060 | |
1061 | |
1062 void LIRGenerator::do_If(If* x) { | |
1063 assert(x->number_of_sux() == 2, "inconsistency"); | |
1064 ValueTag tag = x->x()->type()->tag(); | |
1065 LIRItem xitem(x->x(), this); | |
1066 LIRItem yitem(x->y(), this); | |
1067 LIRItem* xin = &xitem; | |
1068 LIRItem* yin = &yitem; | |
1069 If::Condition cond = x->cond(); | |
1070 | |
1071 if (tag == longTag) { | |
1072 // for longs, only conditions "eql", "neq", "lss", "geq" are valid; | |
1073 // mirror for other conditions | |
1074 if (cond == If::gtr || cond == If::leq) { | |
1075 // swap inputs | |
1076 cond = Instruction::mirror(cond); | |
1077 xin = &yitem; | |
1078 yin = &xitem; | |
1079 } | |
1080 xin->set_destroys_register(); | |
1081 } | |
1082 | |
1083 LIR_Opr left = LIR_OprFact::illegalOpr; | |
1084 LIR_Opr right = LIR_OprFact::illegalOpr; | |
1085 | |
1086 xin->load_item(); | |
1087 left = xin->result(); | |
1088 | |
1089 if (is_simm13(yin->result())) { | |
1090 // inline int constants which are small enough to be immediate operands | |
1091 right = LIR_OprFact::value_type(yin->value()->type()); | |
1092 } else if (tag == longTag && yin->is_constant() && yin->get_jlong_constant() == 0 && | |
1093 (cond == If::eql || cond == If::neq)) { | |
1094 // inline long zero | |
1095 right = LIR_OprFact::value_type(yin->value()->type()); | |
1096 } else if (tag == objectTag && yin->is_constant() && (yin->get_jobject_constant()->is_null_object())) { | |
1097 right = LIR_OprFact::value_type(yin->value()->type()); | |
1098 } else { | |
1099 yin->load_item(); | |
1100 right = yin->result(); | |
1101 } | |
1102 set_no_result(x); | |
1103 | |
1104 // add safepoint before generating condition code so it can be recomputed | |
1105 if (x->is_safepoint()) { | |
1106 // increment backedge counter if needed | |
1783 | 1107 increment_backedge_counter(state_for(x, x->state_before()), x->profiled_bci()); |
0 | 1108 __ safepoint(new_register(T_INT), state_for(x, x->state_before())); |
1109 } | |
1110 | |
1111 __ cmp(lir_cond(cond), left, right); | |
1783 | 1112 // Generate branch profiling. Profiling code doesn't kill flags. |
0 | 1113 profile_branch(x, cond); |
1114 move_to_phi(x->state()); | |
1115 if (x->x()->type()->is_float_kind()) { | |
1116 __ branch(lir_cond(cond), right->type(), x->tsux(), x->usux()); | |
1117 } else { | |
1118 __ branch(lir_cond(cond), right->type(), x->tsux()); | |
1119 } | |
1120 assert(x->default_sux() == x->fsux(), "wrong destination above"); | |
1121 __ jump(x->default_sux()); | |
1122 } | |
1123 | |
1124 | |
1125 LIR_Opr LIRGenerator::getThreadPointer() { | |
1126 return FrameMap::as_pointer_opr(G2); | |
1127 } | |
1128 | |
1129 | |
1130 void LIRGenerator::trace_block_entry(BlockBegin* block) { | |
1131 __ move(LIR_OprFact::intConst(block->block_id()), FrameMap::O0_opr); | |
1132 LIR_OprList* args = new LIR_OprList(1); | |
1133 args->append(FrameMap::O0_opr); | |
1134 address func = CAST_FROM_FN_PTR(address, Runtime1::trace_block_entry); | |
1135 __ call_runtime_leaf(func, rlock_callee_saved(T_INT), LIR_OprFact::illegalOpr, args); | |
1136 } | |
1137 | |
1138 | |
1139 void LIRGenerator::volatile_field_store(LIR_Opr value, LIR_Address* address, | |
1140 CodeEmitInfo* info) { | |
1141 #ifdef _LP64 | |
1142 __ store(value, address, info); | |
1143 #else | |
1144 __ volatile_store_mem_reg(value, address, info); | |
1145 #endif | |
1146 } | |
1147 | |
1148 void LIRGenerator::volatile_field_load(LIR_Address* address, LIR_Opr result, | |
1149 CodeEmitInfo* info) { | |
1150 #ifdef _LP64 | |
1151 __ load(address, result, info); | |
1152 #else | |
1153 __ volatile_load_mem_reg(address, result, info); | |
1154 #endif | |
1155 } | |
1156 | |
1157 | |
1158 void LIRGenerator::put_Object_unsafe(LIR_Opr src, LIR_Opr offset, LIR_Opr data, | |
1159 BasicType type, bool is_volatile) { | |
1160 LIR_Opr base_op = src; | |
1161 LIR_Opr index_op = offset; | |
1162 | |
1163 bool is_obj = (type == T_ARRAY || type == T_OBJECT); | |
1164 #ifndef _LP64 | |
1165 if (is_volatile && type == T_LONG) { | |
1166 __ volatile_store_unsafe_reg(data, src, offset, type, NULL, lir_patch_none); | |
1167 } else | |
1168 #endif | |
1169 { | |
1170 if (type == T_BOOLEAN) { | |
1171 type = T_BYTE; | |
1172 } | |
1173 LIR_Address* addr; | |
1174 if (type == T_ARRAY || type == T_OBJECT) { | |
1175 LIR_Opr tmp = new_pointer_register(); | |
1176 __ add(base_op, index_op, tmp); | |
1572 | 1177 addr = new LIR_Address(tmp, type); |
0 | 1178 } else { |
1179 addr = new LIR_Address(base_op, index_op, type); | |
1180 } | |
1181 | |
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1182 if (is_obj) { |
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1183 pre_barrier(LIR_OprFact::address(addr), LIR_OprFact::illegalOpr /* pre_val */, |
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1184 true /* do_load */, false /* patch */, NULL); |
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1185 // _bs->c1_write_barrier_pre(this, LIR_OprFact::address(addr)); |
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1186 } |
0 | 1187 __ move(data, addr); |
1188 if (is_obj) { | |
1189 // This address is precise | |
1190 post_barrier(LIR_OprFact::address(addr), data); | |
1191 } | |
1192 } | |
1193 } | |
1194 | |
1195 | |
1196 void LIRGenerator::get_Object_unsafe(LIR_Opr dst, LIR_Opr src, LIR_Opr offset, | |
1197 BasicType type, bool is_volatile) { | |
1198 #ifndef _LP64 | |
1199 if (is_volatile && type == T_LONG) { | |
1200 __ volatile_load_unsafe_reg(src, offset, dst, type, NULL, lir_patch_none); | |
1201 } else | |
1202 #endif | |
1203 { | |
1204 LIR_Address* addr = new LIR_Address(src, offset, type); | |
1205 __ load(addr, dst); | |
1206 } | |
1207 } | |
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1208 |
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1209 void LIRGenerator::do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x) { |
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1210 BasicType type = x->basic_type(); |
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1211 LIRItem src(x->object(), this); |
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1212 LIRItem off(x->offset(), this); |
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1213 LIRItem value(x->value(), this); |
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1214 |
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1215 src.load_item(); |
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1216 value.load_item(); |
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1217 off.load_nonconstant(); |
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1218 |
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1219 LIR_Opr dst = rlock_result(x, type); |
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1220 LIR_Opr data = value.result(); |
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1221 bool is_obj = (type == T_ARRAY || type == T_OBJECT); |
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1222 LIR_Opr offset = off.result(); |
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1223 |
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1224 if (data != dst) { |
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1225 __ move(data, dst); |
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1226 data = dst; |
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1227 } |
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1228 |
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1229 assert (!x->is_add() && (type == T_INT || (is_obj LP64_ONLY(&& UseCompressedOops))), "unexpected type"); |
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1230 LIR_Address* addr; |
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1231 if (offset->is_constant()) { |
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1232 |
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1233 #ifdef _LP64 |
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1234 jlong l = offset->as_jlong(); |
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1235 assert((jlong)((jint)l) == l, "offset too large for constant"); |
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1236 jint c = (jint)l; |
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1237 #else |
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1238 jint c = offset->as_jint(); |
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1239 #endif |
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1240 addr = new LIR_Address(src.result(), c, type); |
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1241 } else { |
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1242 addr = new LIR_Address(src.result(), offset, type); |
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1243 } |
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1244 |
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1245 LIR_Opr tmp = LIR_OprFact::illegalOpr; |
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1246 LIR_Opr ptr = LIR_OprFact::illegalOpr; |
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1247 |
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1248 if (is_obj) { |
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1249 // Do the pre-write barrier, if any. |
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1250 // barriers on sparc don't work with a base + index address |
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1251 tmp = FrameMap::G3_opr; |
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1252 ptr = new_pointer_register(); |
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1253 __ add(src.result(), off.result(), ptr); |
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1254 pre_barrier(ptr, LIR_OprFact::illegalOpr /* pre_val */, |
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1255 true /* do_load */, false /* patch */, NULL); |
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1256 } |
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1257 __ xchg(LIR_OprFact::address(addr), data, dst, tmp); |
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1258 if (is_obj) { |
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1259 // Seems to be a precise address |
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1260 post_barrier(ptr, data); |
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1261 } |
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1262 } |