Mercurial > hg > truffle
annotate src/cpu/sparc/vm/c1_LIRGenerator_sparc.cpp @ 6138:ccaa67adfe5b
7063674: Wrong results from basic comparisons after calls to Long.bitCount(long)
Reviewed-by: kvn
author | twisti |
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date | Mon, 11 Jun 2012 16:47:41 -0700 |
parents | 6759698e3140 |
children | 8b0a4867acf0 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2005, 2011, 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(),""); |
0 | 327 bool needs_range_check = true; |
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 | |
342 if (use_length) { | |
343 needs_range_check = x->compute_needs_range_check(); | |
344 if (needs_range_check) { | |
345 length.set_instruction(x->length()); | |
346 length.load_item(); | |
347 } | |
348 } | |
349 if (needs_store_check) { | |
350 value.load_item(); | |
351 } else { | |
352 value.load_for_store(x->elt_type()); | |
353 } | |
354 | |
355 set_no_result(x); | |
356 | |
357 // the CodeEmitInfo must be duplicated for each different | |
358 // LIR-instruction because spilling can occur anywhere between two | |
359 // instructions and so the debug information must be different | |
360 CodeEmitInfo* range_check_info = state_for(x); | |
361 CodeEmitInfo* null_check_info = NULL; | |
362 if (x->needs_null_check()) { | |
363 null_check_info = new CodeEmitInfo(range_check_info); | |
364 } | |
365 | |
366 // emit array address setup early so it schedules better | |
367 LIR_Address* array_addr = emit_array_address(array.result(), index.result(), x->elt_type(), obj_store); | |
368 | |
369 if (GenerateRangeChecks && needs_range_check) { | |
370 if (use_length) { | |
371 __ cmp(lir_cond_belowEqual, length.result(), index.result()); | |
372 __ branch(lir_cond_belowEqual, T_INT, new RangeCheckStub(range_check_info, index.result())); | |
373 } else { | |
374 array_range_check(array.result(), index.result(), null_check_info, range_check_info); | |
375 // range_check also does the null check | |
376 null_check_info = NULL; | |
377 } | |
378 } | |
379 | |
380 if (GenerateArrayStoreCheck && needs_store_check) { | |
381 LIR_Opr tmp1 = FrameMap::G1_opr; | |
382 LIR_Opr tmp2 = FrameMap::G3_opr; | |
383 LIR_Opr tmp3 = FrameMap::G5_opr; | |
384 | |
385 CodeEmitInfo* store_check_info = new CodeEmitInfo(range_check_info); | |
3957 | 386 __ store_check(value.result(), array.result(), tmp1, tmp2, tmp3, store_check_info, x->profiled_method(), x->profiled_bci()); |
0 | 387 } |
388 | |
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389 if (obj_store) { |
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390 // Needs GC write barriers. |
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391 pre_barrier(LIR_OprFact::address(array_addr), LIR_OprFact::illegalOpr /* pre_val */, |
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392 true /* do_load */, false /* patch */, NULL); |
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393 } |
0 | 394 __ move(value.result(), array_addr, null_check_info); |
395 if (obj_store) { | |
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396 // Precise card mark |
0 | 397 post_barrier(LIR_OprFact::address(array_addr), value.result()); |
398 } | |
399 } | |
400 | |
401 | |
402 void LIRGenerator::do_MonitorEnter(MonitorEnter* x) { | |
1819 | 403 assert(x->is_pinned(),""); |
0 | 404 LIRItem obj(x->obj(), this); |
405 obj.load_item(); | |
406 | |
407 set_no_result(x); | |
408 | |
409 LIR_Opr lock = FrameMap::G1_opr; | |
410 LIR_Opr scratch = FrameMap::G3_opr; | |
411 LIR_Opr hdr = FrameMap::G4_opr; | |
412 | |
413 CodeEmitInfo* info_for_exception = NULL; | |
414 if (x->needs_null_check()) { | |
1819 | 415 info_for_exception = state_for(x); |
0 | 416 } |
417 | |
418 // this CodeEmitInfo must not have the xhandlers because here the | |
419 // object is already locked (xhandlers expects object to be unlocked) | |
420 CodeEmitInfo* info = state_for(x, x->state(), true); | |
421 monitor_enter(obj.result(), lock, hdr, scratch, x->monitor_no(), info_for_exception, info); | |
422 } | |
423 | |
424 | |
425 void LIRGenerator::do_MonitorExit(MonitorExit* x) { | |
1819 | 426 assert(x->is_pinned(),""); |
0 | 427 LIRItem obj(x->obj(), this); |
428 obj.dont_load_item(); | |
429 | |
430 set_no_result(x); | |
431 LIR_Opr lock = FrameMap::G1_opr; | |
432 LIR_Opr hdr = FrameMap::G3_opr; | |
433 LIR_Opr obj_temp = FrameMap::G4_opr; | |
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434 monitor_exit(obj_temp, lock, hdr, LIR_OprFact::illegalOpr, x->monitor_no()); |
0 | 435 } |
436 | |
437 | |
438 // _ineg, _lneg, _fneg, _dneg | |
439 void LIRGenerator::do_NegateOp(NegateOp* x) { | |
440 LIRItem value(x->x(), this); | |
441 value.load_item(); | |
442 LIR_Opr reg = rlock_result(x); | |
443 __ negate(value.result(), reg); | |
444 } | |
445 | |
446 | |
447 | |
448 // for _fadd, _fmul, _fsub, _fdiv, _frem | |
449 // _dadd, _dmul, _dsub, _ddiv, _drem | |
450 void LIRGenerator::do_ArithmeticOp_FPU(ArithmeticOp* x) { | |
451 switch (x->op()) { | |
452 case Bytecodes::_fadd: | |
453 case Bytecodes::_fmul: | |
454 case Bytecodes::_fsub: | |
455 case Bytecodes::_fdiv: | |
456 case Bytecodes::_dadd: | |
457 case Bytecodes::_dmul: | |
458 case Bytecodes::_dsub: | |
459 case Bytecodes::_ddiv: { | |
460 LIRItem left(x->x(), this); | |
461 LIRItem right(x->y(), this); | |
462 left.load_item(); | |
463 right.load_item(); | |
464 rlock_result(x); | |
465 arithmetic_op_fpu(x->op(), x->operand(), left.result(), right.result(), x->is_strictfp()); | |
466 } | |
467 break; | |
468 | |
469 case Bytecodes::_frem: | |
470 case Bytecodes::_drem: { | |
471 address entry; | |
472 switch (x->op()) { | |
473 case Bytecodes::_frem: | |
474 entry = CAST_FROM_FN_PTR(address, SharedRuntime::frem); | |
475 break; | |
476 case Bytecodes::_drem: | |
477 entry = CAST_FROM_FN_PTR(address, SharedRuntime::drem); | |
478 break; | |
479 default: | |
480 ShouldNotReachHere(); | |
481 } | |
482 LIR_Opr result = call_runtime(x->x(), x->y(), entry, x->type(), NULL); | |
483 set_result(x, result); | |
484 } | |
485 break; | |
486 | |
487 default: ShouldNotReachHere(); | |
488 } | |
489 } | |
490 | |
491 | |
492 // for _ladd, _lmul, _lsub, _ldiv, _lrem | |
493 void LIRGenerator::do_ArithmeticOp_Long(ArithmeticOp* x) { | |
494 switch (x->op()) { | |
495 case Bytecodes::_lrem: | |
496 case Bytecodes::_lmul: | |
497 case Bytecodes::_ldiv: { | |
498 | |
499 if (x->op() == Bytecodes::_ldiv || x->op() == Bytecodes::_lrem) { | |
500 LIRItem right(x->y(), this); | |
501 right.load_item(); | |
502 | |
503 CodeEmitInfo* info = state_for(x); | |
504 LIR_Opr item = right.result(); | |
505 assert(item->is_register(), "must be"); | |
506 __ cmp(lir_cond_equal, item, LIR_OprFact::longConst(0)); | |
507 __ branch(lir_cond_equal, T_LONG, new DivByZeroStub(info)); | |
508 } | |
509 | |
510 address entry; | |
511 switch (x->op()) { | |
512 case Bytecodes::_lrem: | |
513 entry = CAST_FROM_FN_PTR(address, SharedRuntime::lrem); | |
514 break; // check if dividend is 0 is done elsewhere | |
515 case Bytecodes::_ldiv: | |
516 entry = CAST_FROM_FN_PTR(address, SharedRuntime::ldiv); | |
517 break; // check if dividend is 0 is done elsewhere | |
518 case Bytecodes::_lmul: | |
519 entry = CAST_FROM_FN_PTR(address, SharedRuntime::lmul); | |
520 break; | |
521 default: | |
522 ShouldNotReachHere(); | |
523 } | |
524 | |
525 // order of arguments to runtime call is reversed. | |
526 LIR_Opr result = call_runtime(x->y(), x->x(), entry, x->type(), NULL); | |
527 set_result(x, result); | |
528 break; | |
529 } | |
530 case Bytecodes::_ladd: | |
531 case Bytecodes::_lsub: { | |
532 LIRItem left(x->x(), this); | |
533 LIRItem right(x->y(), this); | |
534 left.load_item(); | |
535 right.load_item(); | |
536 rlock_result(x); | |
537 | |
538 arithmetic_op_long(x->op(), x->operand(), left.result(), right.result(), NULL); | |
539 break; | |
540 } | |
541 default: ShouldNotReachHere(); | |
542 } | |
543 } | |
544 | |
545 | |
546 // Returns if item is an int constant that can be represented by a simm13 | |
547 static bool is_simm13(LIR_Opr item) { | |
548 if (item->is_constant() && item->type() == T_INT) { | |
549 return Assembler::is_simm13(item->as_constant_ptr()->as_jint()); | |
550 } else { | |
551 return false; | |
552 } | |
553 } | |
554 | |
555 | |
556 // for: _iadd, _imul, _isub, _idiv, _irem | |
557 void LIRGenerator::do_ArithmeticOp_Int(ArithmeticOp* x) { | |
558 bool is_div_rem = x->op() == Bytecodes::_idiv || x->op() == Bytecodes::_irem; | |
559 LIRItem left(x->x(), this); | |
560 LIRItem right(x->y(), this); | |
561 // missing test if instr is commutative and if we should swap | |
562 right.load_nonconstant(); | |
563 assert(right.is_constant() || right.is_register(), "wrong state of right"); | |
564 left.load_item(); | |
565 rlock_result(x); | |
566 if (is_div_rem) { | |
567 CodeEmitInfo* info = state_for(x); | |
568 LIR_Opr tmp = FrameMap::G1_opr; | |
569 if (x->op() == Bytecodes::_irem) { | |
570 __ irem(left.result(), right.result(), x->operand(), tmp, info); | |
571 } else if (x->op() == Bytecodes::_idiv) { | |
572 __ idiv(left.result(), right.result(), x->operand(), tmp, info); | |
573 } | |
574 } else { | |
575 arithmetic_op_int(x->op(), x->operand(), left.result(), right.result(), FrameMap::G1_opr); | |
576 } | |
577 } | |
578 | |
579 | |
580 void LIRGenerator::do_ArithmeticOp(ArithmeticOp* x) { | |
581 ValueTag tag = x->type()->tag(); | |
582 assert(x->x()->type()->tag() == tag && x->y()->type()->tag() == tag, "wrong parameters"); | |
583 switch (tag) { | |
584 case floatTag: | |
585 case doubleTag: do_ArithmeticOp_FPU(x); return; | |
586 case longTag: do_ArithmeticOp_Long(x); return; | |
587 case intTag: do_ArithmeticOp_Int(x); return; | |
588 } | |
589 ShouldNotReachHere(); | |
590 } | |
591 | |
592 | |
593 // _ishl, _lshl, _ishr, _lshr, _iushr, _lushr | |
594 void LIRGenerator::do_ShiftOp(ShiftOp* x) { | |
595 LIRItem value(x->x(), this); | |
596 LIRItem count(x->y(), this); | |
597 // Long shift destroys count register | |
598 if (value.type()->is_long()) { | |
599 count.set_destroys_register(); | |
600 } | |
601 value.load_item(); | |
602 // the old backend doesn't support this | |
603 if (count.is_constant() && count.type()->as_IntConstant() != NULL && value.type()->is_int()) { | |
604 jint c = count.get_jint_constant() & 0x1f; | |
605 assert(c >= 0 && c < 32, "should be small"); | |
606 count.dont_load_item(); | |
607 } else { | |
608 count.load_item(); | |
609 } | |
610 LIR_Opr reg = rlock_result(x); | |
611 shift_op(x->op(), reg, value.result(), count.result(), LIR_OprFact::illegalOpr); | |
612 } | |
613 | |
614 | |
615 // _iand, _land, _ior, _lor, _ixor, _lxor | |
616 void LIRGenerator::do_LogicOp(LogicOp* x) { | |
617 LIRItem left(x->x(), this); | |
618 LIRItem right(x->y(), this); | |
619 | |
620 left.load_item(); | |
621 right.load_nonconstant(); | |
622 LIR_Opr reg = rlock_result(x); | |
623 | |
624 logic_op(x->op(), reg, left.result(), right.result()); | |
625 } | |
626 | |
627 | |
628 | |
629 // _lcmp, _fcmpl, _fcmpg, _dcmpl, _dcmpg | |
630 void LIRGenerator::do_CompareOp(CompareOp* x) { | |
631 LIRItem left(x->x(), this); | |
632 LIRItem right(x->y(), this); | |
633 left.load_item(); | |
634 right.load_item(); | |
635 LIR_Opr reg = rlock_result(x); | |
636 if (x->x()->type()->is_float_kind()) { | |
637 Bytecodes::Code code = x->op(); | |
638 __ fcmp2int(left.result(), right.result(), reg, (code == Bytecodes::_fcmpl || code == Bytecodes::_dcmpl)); | |
639 } else if (x->x()->type()->tag() == longTag) { | |
640 __ lcmp2int(left.result(), right.result(), reg); | |
641 } else { | |
642 Unimplemented(); | |
643 } | |
644 } | |
645 | |
646 | |
647 void LIRGenerator::do_AttemptUpdate(Intrinsic* x) { | |
648 assert(x->number_of_arguments() == 3, "wrong type"); | |
649 LIRItem obj (x->argument_at(0), this); // AtomicLong object | |
650 LIRItem cmp_value (x->argument_at(1), this); // value to compare with field | |
651 LIRItem new_value (x->argument_at(2), this); // replace field with new_value if it matches cmp_value | |
652 | |
653 obj.load_item(); | |
654 cmp_value.load_item(); | |
655 new_value.load_item(); | |
656 | |
657 // generate compare-and-swap and produce zero condition if swap occurs | |
658 int value_offset = sun_misc_AtomicLongCSImpl::value_offset(); | |
659 LIR_Opr addr = FrameMap::O7_opr; | |
660 __ add(obj.result(), LIR_OprFact::intConst(value_offset), addr); | |
661 LIR_Opr t1 = FrameMap::G1_opr; // temp for 64-bit value | |
662 LIR_Opr t2 = FrameMap::G3_opr; // temp for 64-bit value | |
663 __ cas_long(addr, cmp_value.result(), new_value.result(), t1, t2); | |
664 | |
665 // generate conditional move of boolean result | |
666 LIR_Opr result = rlock_result(x); | |
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667 __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), result, T_LONG); |
0 | 668 } |
669 | |
670 | |
671 void LIRGenerator::do_CompareAndSwap(Intrinsic* x, ValueType* type) { | |
672 assert(x->number_of_arguments() == 4, "wrong type"); | |
673 LIRItem obj (x->argument_at(0), this); // object | |
674 LIRItem offset(x->argument_at(1), this); // offset of field | |
675 LIRItem cmp (x->argument_at(2), this); // value to compare with field | |
676 LIRItem val (x->argument_at(3), this); // replace field with val if matches cmp | |
677 | |
678 // Use temps to avoid kills | |
679 LIR_Opr t1 = FrameMap::G1_opr; | |
680 LIR_Opr t2 = FrameMap::G3_opr; | |
1873 | 681 LIR_Opr addr = new_pointer_register(); |
0 | 682 |
683 // get address of field | |
684 obj.load_item(); | |
685 offset.load_item(); | |
686 cmp.load_item(); | |
687 val.load_item(); | |
688 | |
689 __ add(obj.result(), offset.result(), addr); | |
690 | |
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691 if (type == objectType) { // Write-barrier needed for Object fields. |
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692 pre_barrier(addr, LIR_OprFact::illegalOpr /* pre_val */, |
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693 true /* do_load */, false /* patch */, NULL); |
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694 } |
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695 |
0 | 696 if (type == objectType) |
697 __ cas_obj(addr, cmp.result(), val.result(), t1, t2); | |
698 else if (type == intType) | |
699 __ cas_int(addr, cmp.result(), val.result(), t1, t2); | |
700 else if (type == longType) | |
701 __ cas_long(addr, cmp.result(), val.result(), t1, t2); | |
702 else { | |
703 ShouldNotReachHere(); | |
704 } | |
705 // generate conditional move of boolean result | |
706 LIR_Opr result = rlock_result(x); | |
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707 __ cmove(lir_cond_equal, LIR_OprFact::intConst(1), LIR_OprFact::intConst(0), |
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708 result, as_BasicType(type)); |
0 | 709 if (type == objectType) { // Write-barrier needed for Object fields. |
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710 // Precise card mark since could either be object or array |
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711 post_barrier(addr, val.result()); |
0 | 712 } |
713 } | |
714 | |
715 | |
716 void LIRGenerator::do_MathIntrinsic(Intrinsic* x) { | |
717 switch (x->id()) { | |
718 case vmIntrinsics::_dabs: | |
719 case vmIntrinsics::_dsqrt: { | |
720 assert(x->number_of_arguments() == 1, "wrong type"); | |
721 LIRItem value(x->argument_at(0), this); | |
722 value.load_item(); | |
723 LIR_Opr dst = rlock_result(x); | |
724 | |
725 switch (x->id()) { | |
726 case vmIntrinsics::_dsqrt: { | |
727 __ sqrt(value.result(), dst, LIR_OprFact::illegalOpr); | |
728 break; | |
729 } | |
730 case vmIntrinsics::_dabs: { | |
731 __ abs(value.result(), dst, LIR_OprFact::illegalOpr); | |
732 break; | |
733 } | |
734 } | |
735 break; | |
736 } | |
737 case vmIntrinsics::_dlog10: // fall through | |
738 case vmIntrinsics::_dlog: // fall through | |
739 case vmIntrinsics::_dsin: // fall through | |
740 case vmIntrinsics::_dtan: // fall through | |
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741 case vmIntrinsics::_dcos: // fall through |
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742 case vmIntrinsics::_dexp: { |
0 | 743 assert(x->number_of_arguments() == 1, "wrong type"); |
744 | |
745 address runtime_entry = NULL; | |
746 switch (x->id()) { | |
747 case vmIntrinsics::_dsin: | |
748 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dsin); | |
749 break; | |
750 case vmIntrinsics::_dcos: | |
751 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dcos); | |
752 break; | |
753 case vmIntrinsics::_dtan: | |
754 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dtan); | |
755 break; | |
756 case vmIntrinsics::_dlog: | |
757 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dlog); | |
758 break; | |
759 case vmIntrinsics::_dlog10: | |
760 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dlog10); | |
761 break; | |
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762 case vmIntrinsics::_dexp: |
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763 runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dexp); |
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764 break; |
0 | 765 default: |
766 ShouldNotReachHere(); | |
767 } | |
768 | |
769 LIR_Opr result = call_runtime(x->argument_at(0), runtime_entry, x->type(), NULL); | |
770 set_result(x, result); | |
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771 break; |
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772 } |
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773 case vmIntrinsics::_dpow: { |
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774 assert(x->number_of_arguments() == 2, "wrong type"); |
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775 address runtime_entry = CAST_FROM_FN_PTR(address, SharedRuntime::dpow); |
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776 LIR_Opr result = call_runtime(x->argument_at(0), x->argument_at(1), runtime_entry, x->type(), NULL); |
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777 set_result(x, result); |
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778 break; |
0 | 779 } |
780 } | |
781 } | |
782 | |
783 | |
784 void LIRGenerator::do_ArrayCopy(Intrinsic* x) { | |
785 assert(x->number_of_arguments() == 5, "wrong type"); | |
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786 |
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787 // Make all state_for calls early since they can emit code |
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788 CodeEmitInfo* info = state_for(x, x->state()); |
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789 |
0 | 790 // Note: spill caller save before setting the item |
791 LIRItem src (x->argument_at(0), this); | |
792 LIRItem src_pos (x->argument_at(1), this); | |
793 LIRItem dst (x->argument_at(2), this); | |
794 LIRItem dst_pos (x->argument_at(3), this); | |
795 LIRItem length (x->argument_at(4), this); | |
796 // load all values in callee_save_registers, as this makes the | |
797 // parameter passing to the fast case simpler | |
798 src.load_item_force (rlock_callee_saved(T_OBJECT)); | |
799 src_pos.load_item_force (rlock_callee_saved(T_INT)); | |
800 dst.load_item_force (rlock_callee_saved(T_OBJECT)); | |
801 dst_pos.load_item_force (rlock_callee_saved(T_INT)); | |
802 length.load_item_force (rlock_callee_saved(T_INT)); | |
803 | |
804 int flags; | |
805 ciArrayKlass* expected_type; | |
806 arraycopy_helper(x, &flags, &expected_type); | |
807 | |
808 __ arraycopy(src.result(), src_pos.result(), dst.result(), dst_pos.result(), | |
809 length.result(), rlock_callee_saved(T_INT), | |
810 expected_type, flags, info); | |
811 set_no_result(x); | |
812 } | |
813 | |
814 // _i2l, _i2f, _i2d, _l2i, _l2f, _l2d, _f2i, _f2l, _f2d, _d2i, _d2l, _d2f | |
815 // _i2b, _i2c, _i2s | |
816 void LIRGenerator::do_Convert(Convert* x) { | |
817 | |
818 switch (x->op()) { | |
819 case Bytecodes::_f2l: | |
820 case Bytecodes::_d2l: | |
821 case Bytecodes::_d2i: | |
822 case Bytecodes::_l2f: | |
823 case Bytecodes::_l2d: { | |
824 | |
825 address entry; | |
826 switch (x->op()) { | |
827 case Bytecodes::_l2f: | |
828 entry = CAST_FROM_FN_PTR(address, SharedRuntime::l2f); | |
829 break; | |
830 case Bytecodes::_l2d: | |
831 entry = CAST_FROM_FN_PTR(address, SharedRuntime::l2d); | |
832 break; | |
833 case Bytecodes::_f2l: | |
834 entry = CAST_FROM_FN_PTR(address, SharedRuntime::f2l); | |
835 break; | |
836 case Bytecodes::_d2l: | |
837 entry = CAST_FROM_FN_PTR(address, SharedRuntime::d2l); | |
838 break; | |
839 case Bytecodes::_d2i: | |
840 entry = CAST_FROM_FN_PTR(address, SharedRuntime::d2i); | |
841 break; | |
842 default: | |
843 ShouldNotReachHere(); | |
844 } | |
845 LIR_Opr result = call_runtime(x->value(), entry, x->type(), NULL); | |
846 set_result(x, result); | |
847 break; | |
848 } | |
849 | |
850 case Bytecodes::_i2f: | |
851 case Bytecodes::_i2d: { | |
852 LIRItem value(x->value(), this); | |
853 | |
854 LIR_Opr reg = rlock_result(x); | |
855 // To convert an int to double, we need to load the 32-bit int | |
856 // from memory into a single precision floating point register | |
857 // (even numbered). Then the sparc fitod instruction takes care | |
858 // of the conversion. This is a bit ugly, but is the best way to | |
859 // get the int value in a single precision floating point register | |
860 value.load_item(); | |
861 LIR_Opr tmp = force_to_spill(value.result(), T_FLOAT); | |
862 __ convert(x->op(), tmp, reg); | |
863 break; | |
864 } | |
865 break; | |
866 | |
867 case Bytecodes::_i2l: | |
868 case Bytecodes::_i2b: | |
869 case Bytecodes::_i2c: | |
870 case Bytecodes::_i2s: | |
871 case Bytecodes::_l2i: | |
872 case Bytecodes::_f2d: | |
873 case Bytecodes::_d2f: { // inline code | |
874 LIRItem value(x->value(), this); | |
875 | |
876 value.load_item(); | |
877 LIR_Opr reg = rlock_result(x); | |
878 __ convert(x->op(), value.result(), reg, false); | |
879 } | |
880 break; | |
881 | |
882 case Bytecodes::_f2i: { | |
883 LIRItem value (x->value(), this); | |
884 value.set_destroys_register(); | |
885 value.load_item(); | |
886 LIR_Opr reg = rlock_result(x); | |
887 set_vreg_flag(reg, must_start_in_memory); | |
888 __ convert(x->op(), value.result(), reg, false); | |
889 } | |
890 break; | |
891 | |
892 default: ShouldNotReachHere(); | |
893 } | |
894 } | |
895 | |
896 | |
897 void LIRGenerator::do_NewInstance(NewInstance* x) { | |
898 // This instruction can be deoptimized in the slow path : use | |
899 // O0 as result register. | |
900 const LIR_Opr reg = result_register_for(x->type()); | |
1819 | 901 #ifndef PRODUCT |
0 | 902 if (PrintNotLoaded && !x->klass()->is_loaded()) { |
1819 | 903 tty->print_cr(" ###class not loaded at new bci %d", x->printable_bci()); |
0 | 904 } |
1819 | 905 #endif |
0 | 906 CodeEmitInfo* info = state_for(x, x->state()); |
907 LIR_Opr tmp1 = FrameMap::G1_oop_opr; | |
908 LIR_Opr tmp2 = FrameMap::G3_oop_opr; | |
909 LIR_Opr tmp3 = FrameMap::G4_oop_opr; | |
910 LIR_Opr tmp4 = FrameMap::O1_oop_opr; | |
911 LIR_Opr klass_reg = FrameMap::G5_oop_opr; | |
912 new_instance(reg, x->klass(), tmp1, tmp2, tmp3, tmp4, klass_reg, info); | |
913 LIR_Opr result = rlock_result(x); | |
914 __ move(reg, result); | |
915 } | |
916 | |
917 | |
918 void LIRGenerator::do_NewTypeArray(NewTypeArray* x) { | |
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919 // Evaluate state_for early since it may emit code |
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920 CodeEmitInfo* info = state_for(x, x->state()); |
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921 |
0 | 922 LIRItem length(x->length(), this); |
923 length.load_item(); | |
924 | |
925 LIR_Opr reg = result_register_for(x->type()); | |
926 LIR_Opr tmp1 = FrameMap::G1_oop_opr; | |
927 LIR_Opr tmp2 = FrameMap::G3_oop_opr; | |
928 LIR_Opr tmp3 = FrameMap::G4_oop_opr; | |
929 LIR_Opr tmp4 = FrameMap::O1_oop_opr; | |
930 LIR_Opr klass_reg = FrameMap::G5_oop_opr; | |
931 LIR_Opr len = length.result(); | |
932 BasicType elem_type = x->elt_type(); | |
933 | |
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934 __ oop2reg(ciTypeArrayKlass::make(elem_type)->constant_encoding(), klass_reg); |
0 | 935 |
936 CodeStub* slow_path = new NewTypeArrayStub(klass_reg, len, reg, info); | |
937 __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, elem_type, klass_reg, slow_path); | |
938 | |
939 LIR_Opr result = rlock_result(x); | |
940 __ move(reg, result); | |
941 } | |
942 | |
943 | |
944 void LIRGenerator::do_NewObjectArray(NewObjectArray* x) { | |
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945 // Evaluate state_for early since it may emit code. |
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946 CodeEmitInfo* info = state_for(x, x->state()); |
0 | 947 // in case of patching (i.e., object class is not yet loaded), we need to reexecute the instruction |
948 // and therefore provide the state before the parameters have been consumed | |
949 CodeEmitInfo* patching_info = NULL; | |
950 if (!x->klass()->is_loaded() || PatchALot) { | |
951 patching_info = state_for(x, x->state_before()); | |
952 } | |
953 | |
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954 LIRItem length(x->length(), this); |
0 | 955 length.load_item(); |
956 | |
957 const LIR_Opr reg = result_register_for(x->type()); | |
958 LIR_Opr tmp1 = FrameMap::G1_oop_opr; | |
959 LIR_Opr tmp2 = FrameMap::G3_oop_opr; | |
960 LIR_Opr tmp3 = FrameMap::G4_oop_opr; | |
961 LIR_Opr tmp4 = FrameMap::O1_oop_opr; | |
962 LIR_Opr klass_reg = FrameMap::G5_oop_opr; | |
963 LIR_Opr len = length.result(); | |
964 | |
965 CodeStub* slow_path = new NewObjectArrayStub(klass_reg, len, reg, info); | |
966 ciObject* obj = (ciObject*) ciObjArrayKlass::make(x->klass()); | |
967 if (obj == ciEnv::unloaded_ciobjarrayklass()) { | |
968 BAILOUT("encountered unloaded_ciobjarrayklass due to out of memory error"); | |
969 } | |
970 jobject2reg_with_patching(klass_reg, obj, patching_info); | |
971 __ allocate_array(reg, len, tmp1, tmp2, tmp3, tmp4, T_OBJECT, klass_reg, slow_path); | |
972 | |
973 LIR_Opr result = rlock_result(x); | |
974 __ move(reg, result); | |
975 } | |
976 | |
977 | |
978 void LIRGenerator::do_NewMultiArray(NewMultiArray* x) { | |
979 Values* dims = x->dims(); | |
980 int i = dims->length(); | |
981 LIRItemList* items = new LIRItemList(dims->length(), NULL); | |
982 while (i-- > 0) { | |
983 LIRItem* size = new LIRItem(dims->at(i), this); | |
984 items->at_put(i, size); | |
985 } | |
986 | |
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987 // Evaluate state_for early since it may emit code. |
0 | 988 CodeEmitInfo* patching_info = NULL; |
989 if (!x->klass()->is_loaded() || PatchALot) { | |
990 patching_info = state_for(x, x->state_before()); | |
991 | |
992 // cannot re-use same xhandlers for multiple CodeEmitInfos, so | |
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993 // clone all handlers. This is handled transparently in other |
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994 // places by the CodeEmitInfo cloning logic but is handled |
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995 // specially here because a stub isn't being used. |
0 | 996 x->set_exception_handlers(new XHandlers(x->exception_handlers())); |
997 } | |
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998 CodeEmitInfo* info = state_for(x, x->state()); |
0 | 999 |
1000 i = dims->length(); | |
1001 while (i-- > 0) { | |
1002 LIRItem* size = items->at(i); | |
1003 size->load_item(); | |
1004 store_stack_parameter (size->result(), | |
1005 in_ByteSize(STACK_BIAS + | |
304 | 1006 frame::memory_parameter_word_sp_offset * wordSize + |
1007 i * sizeof(jint))); | |
0 | 1008 } |
1009 | |
1010 // This instruction can be deoptimized in the slow path : use | |
1011 // O0 as result register. | |
1012 const LIR_Opr reg = result_register_for(x->type()); | |
1013 jobject2reg_with_patching(reg, x->klass(), patching_info); | |
1014 LIR_Opr rank = FrameMap::O1_opr; | |
1015 __ move(LIR_OprFact::intConst(x->rank()), rank); | |
1016 LIR_Opr varargs = FrameMap::as_pointer_opr(O2); | |
1017 int offset_from_sp = (frame::memory_parameter_word_sp_offset * wordSize) + STACK_BIAS; | |
1018 __ add(FrameMap::SP_opr, | |
1019 LIR_OprFact::intptrConst(offset_from_sp), | |
1020 varargs); | |
1021 LIR_OprList* args = new LIR_OprList(3); | |
1022 args->append(reg); | |
1023 args->append(rank); | |
1024 args->append(varargs); | |
1025 __ call_runtime(Runtime1::entry_for(Runtime1::new_multi_array_id), | |
1026 LIR_OprFact::illegalOpr, | |
1027 reg, args, info); | |
1028 | |
1029 LIR_Opr result = rlock_result(x); | |
1030 __ move(reg, result); | |
1031 } | |
1032 | |
1033 | |
1034 void LIRGenerator::do_BlockBegin(BlockBegin* x) { | |
1035 } | |
1036 | |
1037 | |
1038 void LIRGenerator::do_CheckCast(CheckCast* x) { | |
1039 LIRItem obj(x->obj(), this); | |
1040 CodeEmitInfo* patching_info = NULL; | |
1041 if (!x->klass()->is_loaded() || (PatchALot && !x->is_incompatible_class_change_check())) { | |
1042 // must do this before locking the destination register as an oop register, | |
1043 // and before the obj is loaded (so x->obj()->item() is valid for creating a debug info location) | |
1044 patching_info = state_for(x, x->state_before()); | |
1045 } | |
1046 obj.load_item(); | |
1047 LIR_Opr out_reg = rlock_result(x); | |
1048 CodeStub* stub; | |
1819 | 1049 CodeEmitInfo* info_for_exception = state_for(x); |
0 | 1050 |
1051 if (x->is_incompatible_class_change_check()) { | |
1052 assert(patching_info == NULL, "can't patch this"); | |
1053 stub = new SimpleExceptionStub(Runtime1::throw_incompatible_class_change_error_id, LIR_OprFact::illegalOpr, info_for_exception); | |
1054 } else { | |
1055 stub = new SimpleExceptionStub(Runtime1::throw_class_cast_exception_id, obj.result(), info_for_exception); | |
1056 } | |
1057 LIR_Opr tmp1 = FrameMap::G1_oop_opr; | |
1058 LIR_Opr tmp2 = FrameMap::G3_oop_opr; | |
1059 LIR_Opr tmp3 = FrameMap::G4_oop_opr; | |
1060 __ checkcast(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3, | |
1061 x->direct_compare(), info_for_exception, patching_info, stub, | |
1062 x->profiled_method(), x->profiled_bci()); | |
1063 } | |
1064 | |
1065 | |
1066 void LIRGenerator::do_InstanceOf(InstanceOf* x) { | |
1067 LIRItem obj(x->obj(), this); | |
1068 CodeEmitInfo* patching_info = NULL; | |
1069 if (!x->klass()->is_loaded() || PatchALot) { | |
1070 patching_info = state_for(x, x->state_before()); | |
1071 } | |
1072 // ensure the result register is not the input register because the result is initialized before the patching safepoint | |
1073 obj.load_item(); | |
1074 LIR_Opr out_reg = rlock_result(x); | |
1075 LIR_Opr tmp1 = FrameMap::G1_oop_opr; | |
1076 LIR_Opr tmp2 = FrameMap::G3_oop_opr; | |
1077 LIR_Opr tmp3 = FrameMap::G4_oop_opr; | |
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1078 __ instanceof(out_reg, obj.result(), x->klass(), tmp1, tmp2, tmp3, |
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1079 x->direct_compare(), patching_info, |
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1080 x->profiled_method(), x->profiled_bci()); |
0 | 1081 } |
1082 | |
1083 | |
1084 void LIRGenerator::do_If(If* x) { | |
1085 assert(x->number_of_sux() == 2, "inconsistency"); | |
1086 ValueTag tag = x->x()->type()->tag(); | |
1087 LIRItem xitem(x->x(), this); | |
1088 LIRItem yitem(x->y(), this); | |
1089 LIRItem* xin = &xitem; | |
1090 LIRItem* yin = &yitem; | |
1091 If::Condition cond = x->cond(); | |
1092 | |
1093 if (tag == longTag) { | |
1094 // for longs, only conditions "eql", "neq", "lss", "geq" are valid; | |
1095 // mirror for other conditions | |
1096 if (cond == If::gtr || cond == If::leq) { | |
1097 // swap inputs | |
1098 cond = Instruction::mirror(cond); | |
1099 xin = &yitem; | |
1100 yin = &xitem; | |
1101 } | |
1102 xin->set_destroys_register(); | |
1103 } | |
1104 | |
1105 LIR_Opr left = LIR_OprFact::illegalOpr; | |
1106 LIR_Opr right = LIR_OprFact::illegalOpr; | |
1107 | |
1108 xin->load_item(); | |
1109 left = xin->result(); | |
1110 | |
1111 if (is_simm13(yin->result())) { | |
1112 // inline int constants which are small enough to be immediate operands | |
1113 right = LIR_OprFact::value_type(yin->value()->type()); | |
1114 } else if (tag == longTag && yin->is_constant() && yin->get_jlong_constant() == 0 && | |
1115 (cond == If::eql || cond == If::neq)) { | |
1116 // inline long zero | |
1117 right = LIR_OprFact::value_type(yin->value()->type()); | |
1118 } else if (tag == objectTag && yin->is_constant() && (yin->get_jobject_constant()->is_null_object())) { | |
1119 right = LIR_OprFact::value_type(yin->value()->type()); | |
1120 } else { | |
1121 yin->load_item(); | |
1122 right = yin->result(); | |
1123 } | |
1124 set_no_result(x); | |
1125 | |
1126 // add safepoint before generating condition code so it can be recomputed | |
1127 if (x->is_safepoint()) { | |
1128 // increment backedge counter if needed | |
1783 | 1129 increment_backedge_counter(state_for(x, x->state_before()), x->profiled_bci()); |
0 | 1130 __ safepoint(new_register(T_INT), state_for(x, x->state_before())); |
1131 } | |
1132 | |
1133 __ cmp(lir_cond(cond), left, right); | |
1783 | 1134 // Generate branch profiling. Profiling code doesn't kill flags. |
0 | 1135 profile_branch(x, cond); |
1136 move_to_phi(x->state()); | |
1137 if (x->x()->type()->is_float_kind()) { | |
1138 __ branch(lir_cond(cond), right->type(), x->tsux(), x->usux()); | |
1139 } else { | |
1140 __ branch(lir_cond(cond), right->type(), x->tsux()); | |
1141 } | |
1142 assert(x->default_sux() == x->fsux(), "wrong destination above"); | |
1143 __ jump(x->default_sux()); | |
1144 } | |
1145 | |
1146 | |
1147 LIR_Opr LIRGenerator::getThreadPointer() { | |
1148 return FrameMap::as_pointer_opr(G2); | |
1149 } | |
1150 | |
1151 | |
1152 void LIRGenerator::trace_block_entry(BlockBegin* block) { | |
1153 __ move(LIR_OprFact::intConst(block->block_id()), FrameMap::O0_opr); | |
1154 LIR_OprList* args = new LIR_OprList(1); | |
1155 args->append(FrameMap::O0_opr); | |
1156 address func = CAST_FROM_FN_PTR(address, Runtime1::trace_block_entry); | |
1157 __ call_runtime_leaf(func, rlock_callee_saved(T_INT), LIR_OprFact::illegalOpr, args); | |
1158 } | |
1159 | |
1160 | |
1161 void LIRGenerator::volatile_field_store(LIR_Opr value, LIR_Address* address, | |
1162 CodeEmitInfo* info) { | |
1163 #ifdef _LP64 | |
1164 __ store(value, address, info); | |
1165 #else | |
1166 __ volatile_store_mem_reg(value, address, info); | |
1167 #endif | |
1168 } | |
1169 | |
1170 void LIRGenerator::volatile_field_load(LIR_Address* address, LIR_Opr result, | |
1171 CodeEmitInfo* info) { | |
1172 #ifdef _LP64 | |
1173 __ load(address, result, info); | |
1174 #else | |
1175 __ volatile_load_mem_reg(address, result, info); | |
1176 #endif | |
1177 } | |
1178 | |
1179 | |
1180 void LIRGenerator::put_Object_unsafe(LIR_Opr src, LIR_Opr offset, LIR_Opr data, | |
1181 BasicType type, bool is_volatile) { | |
1182 LIR_Opr base_op = src; | |
1183 LIR_Opr index_op = offset; | |
1184 | |
1185 bool is_obj = (type == T_ARRAY || type == T_OBJECT); | |
1186 #ifndef _LP64 | |
1187 if (is_volatile && type == T_LONG) { | |
1188 __ volatile_store_unsafe_reg(data, src, offset, type, NULL, lir_patch_none); | |
1189 } else | |
1190 #endif | |
1191 { | |
1192 if (type == T_BOOLEAN) { | |
1193 type = T_BYTE; | |
1194 } | |
1195 LIR_Address* addr; | |
1196 if (type == T_ARRAY || type == T_OBJECT) { | |
1197 LIR_Opr tmp = new_pointer_register(); | |
1198 __ add(base_op, index_op, tmp); | |
1572 | 1199 addr = new LIR_Address(tmp, type); |
0 | 1200 } else { |
1201 addr = new LIR_Address(base_op, index_op, type); | |
1202 } | |
1203 | |
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1204 if (is_obj) { |
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1205 pre_barrier(LIR_OprFact::address(addr), LIR_OprFact::illegalOpr /* pre_val */, |
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1206 true /* do_load */, false /* patch */, NULL); |
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1207 // _bs->c1_write_barrier_pre(this, LIR_OprFact::address(addr)); |
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1208 } |
0 | 1209 __ move(data, addr); |
1210 if (is_obj) { | |
1211 // This address is precise | |
1212 post_barrier(LIR_OprFact::address(addr), data); | |
1213 } | |
1214 } | |
1215 } | |
1216 | |
1217 | |
1218 void LIRGenerator::get_Object_unsafe(LIR_Opr dst, LIR_Opr src, LIR_Opr offset, | |
1219 BasicType type, bool is_volatile) { | |
1220 #ifndef _LP64 | |
1221 if (is_volatile && type == T_LONG) { | |
1222 __ volatile_load_unsafe_reg(src, offset, dst, type, NULL, lir_patch_none); | |
1223 } else | |
1224 #endif | |
1225 { | |
1226 LIR_Address* addr = new LIR_Address(src, offset, type); | |
1227 __ load(addr, dst); | |
1228 } | |
1229 } |