1 /*
2 * Copyright (c) 2000, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_C1_C1_LIR_HPP
26 #define SHARE_C1_C1_LIR_HPP
27
28 #include "c1/c1_Defs.hpp"
29 #include "c1/c1_ValueType.hpp"
30 #include "oops/method.hpp"
31 #include "utilities/globalDefinitions.hpp"
32 #include "utilities/macros.hpp"
33
34 class BlockBegin;
35 class BlockList;
36 class LIR_Assembler;
37 class CodeEmitInfo;
38 class CodeStub;
39 class CodeStubList;
40 class C1SafepointPollStub;
41 class ArrayCopyStub;
42 class LIR_Op;
43 class ciType;
44 class ValueType;
45 class LIR_OpVisitState;
46
47 //---------------------------------------------------------------------
48 // LIR Operands
49 // LIR_OprPtr
50 // LIR_Const
51 // LIR_Address
52 //---------------------------------------------------------------------
53 class LIR_OprPtr;
54 class LIR_Const;
55 class LIR_Address;
56 class LIR_OprVisitor;
57 class LIR_Opr;
58
59 typedef int RegNr;
60
61 typedef GrowableArray<LIR_Opr> LIR_OprList;
62 typedef GrowableArray<LIR_Op*> LIR_OpArray;
63 typedef GrowableArray<LIR_Op*> LIR_OpList;
64
65 // define LIR_OprPtr early so LIR_Opr can refer to it
66 class LIR_OprPtr: public CompilationResourceObj {
67 public:
68 bool is_oop_pointer() const { return (type() == T_OBJECT); }
69 bool is_float_kind() const { BasicType t = type(); return (t == T_FLOAT) || (t == T_DOUBLE); }
70
71 virtual LIR_Const* as_constant() { return nullptr; }
72 virtual LIR_Address* as_address() { return nullptr; }
73 virtual BasicType type() const = 0;
74 virtual void print_value_on(outputStream* out) const = 0;
75 };
76
77
78
79 // LIR constants
80 class LIR_Const: public LIR_OprPtr {
81 private:
82 JavaValue _value;
83
84 void type_check(BasicType t) const { assert(type() == t, "type check"); }
85 void type_check(BasicType t1, BasicType t2) const { assert(type() == t1 || type() == t2, "type check"); }
86 void type_check(BasicType t1, BasicType t2, BasicType t3) const { assert(type() == t1 || type() == t2 || type() == t3, "type check"); }
87
88 public:
89 LIR_Const(jint i, bool is_address=false) { _value.set_type(is_address?T_ADDRESS:T_INT); _value.set_jint(i); }
90 LIR_Const(jlong l) { _value.set_type(T_LONG); _value.set_jlong(l); }
91 LIR_Const(jfloat f) { _value.set_type(T_FLOAT); _value.set_jfloat(f); }
92 LIR_Const(jdouble d) { _value.set_type(T_DOUBLE); _value.set_jdouble(d); }
93 LIR_Const(jobject o) { _value.set_type(T_OBJECT); _value.set_jobject(o); }
94 LIR_Const(void* p) {
95 #ifdef _LP64
96 assert(sizeof(jlong) >= sizeof(p), "too small");;
97 _value.set_type(T_LONG); _value.set_jlong((jlong)p);
98 #else
99 assert(sizeof(jint) >= sizeof(p), "too small");;
100 _value.set_type(T_INT); _value.set_jint((jint)p);
101 #endif
102 }
103 LIR_Const(Metadata* m) {
104 _value.set_type(T_METADATA);
105 #ifdef _LP64
106 _value.set_jlong((jlong)m);
107 #else
108 _value.set_jint((jint)m);
109 #endif // _LP64
110 }
111
112 virtual BasicType type() const { return _value.get_type(); }
113 virtual LIR_Const* as_constant() { return this; }
114
115 jint as_jint() const { type_check(T_INT, T_ADDRESS); return _value.get_jint(); }
116 jlong as_jlong() const { type_check(T_LONG ); return _value.get_jlong(); }
117 jfloat as_jfloat() const { type_check(T_FLOAT ); return _value.get_jfloat(); }
118 jdouble as_jdouble() const { type_check(T_DOUBLE); return _value.get_jdouble(); }
119 jobject as_jobject() const { type_check(T_OBJECT); return _value.get_jobject(); }
120 jint as_jint_lo() const { type_check(T_LONG ); return low(_value.get_jlong()); }
121 jint as_jint_hi() const { type_check(T_LONG ); return high(_value.get_jlong()); }
122
123 #ifdef _LP64
124 address as_pointer() const { type_check(T_LONG ); return (address)_value.get_jlong(); }
125 Metadata* as_metadata() const { type_check(T_METADATA); return (Metadata*)_value.get_jlong(); }
126 #else
127 address as_pointer() const { type_check(T_INT ); return (address)_value.get_jint(); }
128 Metadata* as_metadata() const { type_check(T_METADATA); return (Metadata*)_value.get_jint(); }
129 #endif
130
131
132 jint as_jint_bits() const { type_check(T_FLOAT, T_INT, T_ADDRESS); return _value.get_jint(); }
133 jint as_jint_lo_bits() const {
134 if (type() == T_DOUBLE) {
135 return low(jlong_cast(_value.get_jdouble()));
136 } else {
137 return as_jint_lo();
138 }
139 }
140 jint as_jint_hi_bits() const {
141 if (type() == T_DOUBLE) {
142 return high(jlong_cast(_value.get_jdouble()));
143 } else {
144 return as_jint_hi();
145 }
146 }
147 jlong as_jlong_bits() const {
148 if (type() == T_DOUBLE) {
149 return jlong_cast(_value.get_jdouble());
150 } else {
151 return as_jlong();
152 }
153 }
154
155 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
156
157
158 bool is_zero_float() {
159 jfloat f = as_jfloat();
160 jfloat ok = 0.0f;
161 return jint_cast(f) == jint_cast(ok);
162 }
163
164 bool is_one_float() {
165 jfloat f = as_jfloat();
166 return !g_isnan(f) && g_isfinite(f) && f == 1.0;
167 }
168
169 bool is_zero_double() {
170 jdouble d = as_jdouble();
171 jdouble ok = 0.0;
172 return jlong_cast(d) == jlong_cast(ok);
173 }
174
175 bool is_one_double() {
176 jdouble d = as_jdouble();
177 return !g_isnan(d) && g_isfinite(d) && d == 1.0;
178 }
179 };
180
181
182 //---------------------LIR Operand descriptor------------------------------------
183 //
184 // The class LIR_Opr represents a LIR instruction operand;
185 // it can be a register (ALU/FPU), stack location or a constant;
186 // Constants and addresses are represented as resource area allocated
187 // structures (see above), and pointers are stored in the _value field (cast to
188 // an intptr_t).
189 // Registers and stack locations are represented inline as integers.
190 // (see value function).
191
192 // Previously, this class was derived from CompilationResourceObj.
193 // However, deriving from any of the "Obj" types in allocation.hpp seems
194 // detrimental, since in some build modes it would add a vtable to this class,
195 // which make it no longer be a 1-word trivially-copyable wrapper object,
196 // which is the entire point of it.
197
198 class LIR_Opr {
199 public:
200 // value structure:
201 // data other-non-data opr-type opr-kind
202 // +-------------------+--------------+-------+-----+
203 // [max...............................|6 5 4 3|2 1 0]
204 // ^
205 // is_pointer bit
206 //
207 // lowest bit cleared, means it is a structure pointer
208 // we need 4 bits to represent types
209
210 private:
211 friend class LIR_OprFact;
212
213 intptr_t _value;
214 // Conversion
215 intptr_t value() const { return _value; }
216
217 bool check_value_mask(intptr_t mask, intptr_t masked_value) const {
218 return (value() & mask) == masked_value;
219 }
220
221 enum OprKind {
222 pointer_value = 0
223 , stack_value = 1
224 , cpu_register = 3
225 , fpu_register = 5
226 , illegal_value = 7
227 };
228
229 enum OprBits {
230 pointer_bits = 1
231 , kind_bits = 3
232 , type_bits = 4
233 , size_bits = 2
234 , destroys_bits = 1
235 , virtual_bits = 1
236 , is_xmm_bits = 1
237 , last_use_bits = 1
238 , non_data_bits = kind_bits + type_bits + size_bits + destroys_bits + virtual_bits
239 + is_xmm_bits + last_use_bits
240 , data_bits = BitsPerInt - non_data_bits
241 , reg_bits = data_bits / 2 // for two registers in one value encoding
242 };
243
244 enum OprShift : uintptr_t {
245 kind_shift = 0
246 , type_shift = kind_shift + kind_bits
247 , size_shift = type_shift + type_bits
248 , destroys_shift = size_shift + size_bits
249 , last_use_shift = destroys_shift + destroys_bits
250 , virtual_shift = last_use_shift + last_use_bits
251 , is_xmm_shift = virtual_shift + virtual_bits
252 , data_shift = is_xmm_shift + is_xmm_bits
253 , reg1_shift = data_shift
254 , reg2_shift = data_shift + reg_bits
255
256 };
257
258 enum OprSize {
259 single_size = 0 << size_shift
260 , double_size = 1 << size_shift
261 };
262
263 enum OprMask {
264 kind_mask = right_n_bits(kind_bits)
265 , type_mask = right_n_bits(type_bits) << type_shift
266 , size_mask = right_n_bits(size_bits) << size_shift
267 , last_use_mask = right_n_bits(last_use_bits) << last_use_shift
268 , virtual_mask = right_n_bits(virtual_bits) << virtual_shift
269 , is_xmm_mask = right_n_bits(is_xmm_bits) << is_xmm_shift
270 , pointer_mask = right_n_bits(pointer_bits)
271 , lower_reg_mask = right_n_bits(reg_bits)
272 , no_type_mask = (int)(~(type_mask | last_use_mask))
273 };
274
275 uint32_t data() const { return (uint32_t)value() >> data_shift; }
276 int lo_reg_half() const { return data() & lower_reg_mask; }
277 int hi_reg_half() const { return (data() >> reg_bits) & lower_reg_mask; }
278 OprKind kind_field() const { return (OprKind)(value() & kind_mask); }
279 OprSize size_field() const { return (OprSize)(value() & size_mask); }
280
281 static char type_char(BasicType t);
282
283 public:
284 LIR_Opr() : _value(0) {}
285 LIR_Opr(intptr_t val) : _value(val) {}
286 LIR_Opr(LIR_OprPtr *val) : _value(reinterpret_cast<intptr_t>(val)) {}
287 bool operator==(const LIR_Opr &other) const { return _value == other._value; }
288 bool operator!=(const LIR_Opr &other) const { return _value != other._value; }
289 explicit operator bool() const { return _value != 0; }
290
291 // UGLY HACK: make this value object look like a pointer (to itself). This
292 // operator overload should be removed, and all callers updated from
293 // `opr->fn()` to `opr.fn()`.
294 const LIR_Opr* operator->() const { return this; }
295 LIR_Opr* operator->() { return this; }
296
297 enum {
298 vreg_base = ConcreteRegisterImpl::number_of_registers,
299 data_max = (1 << data_bits) - 1, // max unsigned value for data bit field
300 vreg_limit = 10000, // choose a reasonable limit,
301 vreg_max = MIN2(vreg_limit, data_max) // and make sure if fits in the bit field
302 };
303
304 static inline LIR_Opr illegalOpr();
305 static inline LIR_Opr nullOpr();
306
307 enum OprType {
308 unknown_type = 0 << type_shift // means: not set (catch uninitialized types)
309 , int_type = 1 << type_shift
310 , long_type = 2 << type_shift
311 , object_type = 3 << type_shift
312 , address_type = 4 << type_shift
313 , float_type = 5 << type_shift
314 , double_type = 6 << type_shift
315 , metadata_type = 7 << type_shift
316 };
317 friend OprType as_OprType(BasicType t);
318 friend BasicType as_BasicType(OprType t);
319
320 OprType type_field_valid() const { assert(is_register() || is_stack(), "should not be called otherwise"); return (OprType)(value() & type_mask); }
321 OprType type_field() const { return is_illegal() ? unknown_type : (OprType)(value() & type_mask); }
322
323 static OprSize size_for(BasicType t) {
324 switch (t) {
325 case T_LONG:
326 case T_DOUBLE:
327 return double_size;
328 break;
329
330 case T_FLOAT:
331 case T_BOOLEAN:
332 case T_CHAR:
333 case T_BYTE:
334 case T_SHORT:
335 case T_INT:
336 case T_ADDRESS:
337 case T_OBJECT:
338 case T_ARRAY:
339 case T_METADATA:
340 return single_size;
341 break;
342
343 default:
344 ShouldNotReachHere();
345 return single_size;
346 }
347 }
348
349
350 void validate_type() const PRODUCT_RETURN;
351
352 BasicType type() const {
353 if (is_pointer()) {
354 return pointer()->type();
355 }
356 return as_BasicType(type_field());
357 }
358
359
360 ValueType* value_type() const { return as_ValueType(type()); }
361
362 char type_char() const { return type_char((is_pointer()) ? pointer()->type() : type()); }
363
364 bool is_equal(LIR_Opr opr) const { return *this == opr; }
365 // checks whether types are same
366 bool is_same_type(LIR_Opr opr) const {
367 assert(type_field() != unknown_type &&
368 opr->type_field() != unknown_type, "shouldn't see unknown_type");
369 return type_field() == opr->type_field();
370 }
371 bool is_same_register(LIR_Opr opr) {
372 return (is_register() && opr->is_register() &&
373 kind_field() == opr->kind_field() &&
374 (value() & no_type_mask) == (opr->value() & no_type_mask));
375 }
376
377 bool is_pointer() const { return check_value_mask(pointer_mask, pointer_value); }
378 bool is_illegal() const { return kind_field() == illegal_value; }
379 bool is_valid() const { return kind_field() != illegal_value; }
380
381 bool is_register() const { return is_cpu_register() || is_fpu_register(); }
382 bool is_virtual() const { return is_virtual_cpu() || is_virtual_fpu(); }
383
384 bool is_constant() const { return is_pointer() && pointer()->as_constant() != nullptr; }
385 bool is_address() const { return is_pointer() && pointer()->as_address() != nullptr; }
386
387 bool is_float_kind() const { return is_pointer() ? pointer()->is_float_kind() : (kind_field() == fpu_register); }
388 bool is_oop() const;
389
390 // semantic for fpu- and xmm-registers:
391 // * is_float and is_double return true for xmm_registers
392 // (so is_single_fpu and is_single_xmm are true)
393 // * So you must always check for is_???_xmm prior to is_???_fpu to
394 // distinguish between fpu- and xmm-registers
395
396 bool is_stack() const { validate_type(); return check_value_mask(kind_mask, stack_value); }
397 bool is_single_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | single_size); }
398 bool is_double_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | double_size); }
399
400 bool is_cpu_register() const { validate_type(); return check_value_mask(kind_mask, cpu_register); }
401 bool is_virtual_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register | virtual_mask); }
402 bool is_fixed_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register); }
403 bool is_single_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | single_size); }
404 bool is_double_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | double_size); }
405
406 bool is_fpu_register() const { validate_type(); return check_value_mask(kind_mask, fpu_register); }
407 bool is_virtual_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register | virtual_mask); }
408 bool is_fixed_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register); }
409 bool is_single_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | single_size); }
410 bool is_double_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | double_size); }
411
412 bool is_xmm_register() const { validate_type(); return check_value_mask(kind_mask | is_xmm_mask, fpu_register | is_xmm_mask); }
413 bool is_single_xmm() const { validate_type(); return check_value_mask(kind_mask | size_mask | is_xmm_mask, fpu_register | single_size | is_xmm_mask); }
414 bool is_double_xmm() const { validate_type(); return check_value_mask(kind_mask | size_mask | is_xmm_mask, fpu_register | double_size | is_xmm_mask); }
415
416 // fast accessor functions for special bits that do not work for pointers
417 // (in this functions, the check for is_pointer() is omitted)
418 bool is_single_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, single_size); }
419 bool is_double_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, double_size); }
420 bool is_virtual_register() const { assert(is_register(), "type check"); return check_value_mask(virtual_mask, virtual_mask); }
421 bool is_oop_register() const { assert(is_register() || is_stack(), "type check"); return type_field_valid() == object_type; }
422 BasicType type_register() const { assert(is_register() || is_stack(), "type check"); return as_BasicType(type_field_valid()); }
423
424 bool is_last_use() const { assert(is_register(), "only works for registers"); return (value() & last_use_mask) != 0; }
425 LIR_Opr make_last_use() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | last_use_mask); }
426
427
428 int single_stack_ix() const { assert(is_single_stack() && !is_virtual(), "type check"); return (int)data(); }
429 int double_stack_ix() const { assert(is_double_stack() && !is_virtual(), "type check"); return (int)data(); }
430 RegNr cpu_regnr() const { assert(is_single_cpu() && !is_virtual(), "type check"); return (RegNr)data(); }
431 RegNr cpu_regnrLo() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
432 RegNr cpu_regnrHi() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
433 RegNr fpu_regnr() const { assert(is_single_fpu() && !is_virtual(), "type check"); return (RegNr)data(); }
434 RegNr fpu_regnrLo() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
435 RegNr fpu_regnrHi() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
436 RegNr xmm_regnr() const { assert(is_single_xmm() && !is_virtual(), "type check"); return (RegNr)data(); }
437 RegNr xmm_regnrLo() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
438 RegNr xmm_regnrHi() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
439 int vreg_number() const { assert(is_virtual(), "type check"); return (RegNr)data(); }
440
441 LIR_OprPtr* pointer() const { assert(_value != 0 && is_pointer(), "nullness and type check"); return (LIR_OprPtr*)_value; }
442 LIR_Const* as_constant_ptr() const { return pointer()->as_constant(); }
443 LIR_Address* as_address_ptr() const { return pointer()->as_address(); }
444
445 Register as_register() const;
446 Register as_register_lo() const;
447 Register as_register_hi() const;
448
449 Register as_pointer_register() {
450 #ifdef _LP64
451 if (is_double_cpu()) {
452 assert(as_register_lo() == as_register_hi(), "should be a single register");
453 return as_register_lo();
454 }
455 #endif
456 return as_register();
457 }
458
459 FloatRegister as_float_reg () const;
460 FloatRegister as_double_reg () const;
461 #ifdef X86
462 XMMRegister as_xmm_float_reg () const;
463 XMMRegister as_xmm_double_reg() const;
464 // for compatibility with RInfo
465 int fpu() const { return lo_reg_half(); }
466 #endif
467
468 jint as_jint() const { return as_constant_ptr()->as_jint(); }
469 jlong as_jlong() const { return as_constant_ptr()->as_jlong(); }
470 jfloat as_jfloat() const { return as_constant_ptr()->as_jfloat(); }
471 jdouble as_jdouble() const { return as_constant_ptr()->as_jdouble(); }
472 jobject as_jobject() const { return as_constant_ptr()->as_jobject(); }
473
474 void print() const PRODUCT_RETURN;
475 void print(outputStream* out) const PRODUCT_RETURN;
476 };
477
478 inline LIR_Opr::OprType as_OprType(BasicType type) {
479 switch (type) {
480 case T_INT: return LIR_Opr::int_type;
481 case T_LONG: return LIR_Opr::long_type;
482 case T_FLOAT: return LIR_Opr::float_type;
483 case T_DOUBLE: return LIR_Opr::double_type;
484 case T_OBJECT:
485 case T_ARRAY: return LIR_Opr::object_type;
486 case T_ADDRESS: return LIR_Opr::address_type;
487 case T_METADATA: return LIR_Opr::metadata_type;
488 case T_ILLEGAL: // fall through
489 default: ShouldNotReachHere(); return LIR_Opr::unknown_type;
490 }
491 }
492
493 inline BasicType as_BasicType(LIR_Opr::OprType t) {
494 switch (t) {
495 case LIR_Opr::int_type: return T_INT;
496 case LIR_Opr::long_type: return T_LONG;
497 case LIR_Opr::float_type: return T_FLOAT;
498 case LIR_Opr::double_type: return T_DOUBLE;
499 case LIR_Opr::object_type: return T_OBJECT;
500 case LIR_Opr::address_type: return T_ADDRESS;
501 case LIR_Opr::metadata_type:return T_METADATA;
502 case LIR_Opr::unknown_type: // fall through
503 default: ShouldNotReachHere(); return T_ILLEGAL;
504 }
505 }
506
507
508 // LIR_Address
509 class LIR_Address: public LIR_OprPtr {
510 friend class LIR_OpVisitState;
511
512 public:
513 // NOTE: currently these must be the log2 of the scale factor (and
514 // must also be equivalent to the ScaleFactor enum in
515 // assembler_i486.hpp)
516 enum Scale {
517 times_1 = 0,
518 times_2 = 1,
519 times_4 = 2,
520 times_8 = 3
521 };
522
523 private:
524 LIR_Opr _base;
525 LIR_Opr _index;
526 intx _disp;
527 Scale _scale;
528 BasicType _type;
529
530 public:
531 LIR_Address(LIR_Opr base, LIR_Opr index, BasicType type):
532 _base(base)
533 , _index(index)
534 , _disp(0)
535 , _scale(times_1)
536 , _type(type) { verify(); }
537
538 LIR_Address(LIR_Opr base, intx disp, BasicType type):
539 _base(base)
540 , _index(LIR_Opr::illegalOpr())
541 , _disp(disp)
542 , _scale(times_1)
543 , _type(type) { verify(); }
544
545 LIR_Address(LIR_Opr base, BasicType type):
546 _base(base)
547 , _index(LIR_Opr::illegalOpr())
548 , _disp(0)
549 , _scale(times_1)
550 , _type(type) { verify(); }
551
552 LIR_Address(LIR_Opr base, LIR_Opr index, intx disp, BasicType type):
553 _base(base)
554 , _index(index)
555 , _disp(disp)
556 , _scale(times_1)
557 , _type(type) { verify(); }
558
559 LIR_Address(LIR_Opr base, LIR_Opr index, Scale scale, intx disp, BasicType type):
560 _base(base)
561 , _index(index)
562 , _disp(disp)
563 , _scale(scale)
564 , _type(type) { verify(); }
565
566 LIR_Opr base() const { return _base; }
567 LIR_Opr index() const { return _index; }
568 Scale scale() const { return _scale; }
569 intx disp() const { return _disp; }
570
571 bool equals(LIR_Address* other) const { return base() == other->base() && index() == other->index() && disp() == other->disp() && scale() == other->scale(); }
572
573 virtual LIR_Address* as_address() { return this; }
574 virtual BasicType type() const { return _type; }
575 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
576
577 void verify() const PRODUCT_RETURN;
578
579 static Scale scale(BasicType type);
580 };
581
582
583 // operand factory
584 class LIR_OprFact: public AllStatic {
585 public:
586
587 static LIR_Opr illegalOpr;
588 static LIR_Opr nullOpr;
589
590 static LIR_Opr single_cpu(int reg) {
591 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
592 LIR_Opr::int_type |
593 LIR_Opr::cpu_register |
594 LIR_Opr::single_size);
595 }
596 static LIR_Opr single_cpu_oop(int reg) {
597 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
598 LIR_Opr::object_type |
599 LIR_Opr::cpu_register |
600 LIR_Opr::single_size);
601 }
602 static LIR_Opr single_cpu_address(int reg) {
603 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
604 LIR_Opr::address_type |
605 LIR_Opr::cpu_register |
606 LIR_Opr::single_size);
607 }
608 static LIR_Opr single_cpu_metadata(int reg) {
609 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
610 LIR_Opr::metadata_type |
611 LIR_Opr::cpu_register |
612 LIR_Opr::single_size);
613 }
614 static LIR_Opr double_cpu(int reg1, int reg2) {
615 LP64_ONLY(assert(reg1 == reg2, "must be identical"));
616 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) |
617 (reg2 << LIR_Opr::reg2_shift) |
618 LIR_Opr::long_type |
619 LIR_Opr::cpu_register |
620 LIR_Opr::double_size);
621 }
622
623 static LIR_Opr single_fpu(int reg) {
624 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
625 LIR_Opr::float_type |
626 LIR_Opr::fpu_register |
627 LIR_Opr::single_size);
628 }
629
630 // Platform dependent.
631 static LIR_Opr double_fpu(int reg1, int reg2 = -1 /*fnoreg*/);
632
633 #ifdef ARM32
634 static LIR_Opr single_softfp(int reg) {
635 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
636 LIR_Opr::float_type |
637 LIR_Opr::cpu_register |
638 LIR_Opr::single_size);
639 }
640 static LIR_Opr double_softfp(int reg1, int reg2) {
641 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) |
642 (reg2 << LIR_Opr::reg2_shift) |
643 LIR_Opr::double_type |
644 LIR_Opr::cpu_register |
645 LIR_Opr::double_size);
646 }
647 #endif // ARM32
648
649 #if defined(X86)
650 static LIR_Opr single_xmm(int reg) {
651 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
652 LIR_Opr::float_type |
653 LIR_Opr::fpu_register |
654 LIR_Opr::single_size |
655 LIR_Opr::is_xmm_mask);
656 }
657 static LIR_Opr double_xmm(int reg) {
658 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
659 (reg << LIR_Opr::reg2_shift) |
660 LIR_Opr::double_type |
661 LIR_Opr::fpu_register |
662 LIR_Opr::double_size |
663 LIR_Opr::is_xmm_mask);
664 }
665 #endif // X86
666
667 static LIR_Opr virtual_register(int index, BasicType type) {
668 if (index > LIR_Opr::vreg_max) {
669 // Running out of virtual registers. Caller should bailout.
670 return illegalOpr;
671 }
672
673 LIR_Opr res;
674 switch (type) {
675 case T_OBJECT: // fall through
676 case T_ARRAY:
677 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
678 LIR_Opr::object_type |
679 LIR_Opr::cpu_register |
680 LIR_Opr::single_size |
681 LIR_Opr::virtual_mask);
682 break;
683
684 case T_METADATA:
685 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
686 LIR_Opr::metadata_type|
687 LIR_Opr::cpu_register |
688 LIR_Opr::single_size |
689 LIR_Opr::virtual_mask);
690 break;
691
692 case T_INT:
693 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
694 LIR_Opr::int_type |
695 LIR_Opr::cpu_register |
696 LIR_Opr::single_size |
697 LIR_Opr::virtual_mask);
698 break;
699
700 case T_ADDRESS:
701 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
702 LIR_Opr::address_type |
703 LIR_Opr::cpu_register |
704 LIR_Opr::single_size |
705 LIR_Opr::virtual_mask);
706 break;
707
708 case T_LONG:
709 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
710 LIR_Opr::long_type |
711 LIR_Opr::cpu_register |
712 LIR_Opr::double_size |
713 LIR_Opr::virtual_mask);
714 break;
715
716 #ifdef __SOFTFP__
717 case T_FLOAT:
718 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
719 LIR_Opr::float_type |
720 LIR_Opr::cpu_register |
721 LIR_Opr::single_size |
722 LIR_Opr::virtual_mask);
723 break;
724 case T_DOUBLE:
725 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
726 LIR_Opr::double_type |
727 LIR_Opr::cpu_register |
728 LIR_Opr::double_size |
729 LIR_Opr::virtual_mask);
730 break;
731 #else // __SOFTFP__
732 case T_FLOAT:
733 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
734 LIR_Opr::float_type |
735 LIR_Opr::fpu_register |
736 LIR_Opr::single_size |
737 LIR_Opr::virtual_mask);
738 break;
739
740 case
741 T_DOUBLE: res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
742 LIR_Opr::double_type |
743 LIR_Opr::fpu_register |
744 LIR_Opr::double_size |
745 LIR_Opr::virtual_mask);
746 break;
747 #endif // __SOFTFP__
748 default: ShouldNotReachHere(); res = illegalOpr;
749 }
750
751 #ifdef ASSERT
752 res->validate_type();
753 assert(res->vreg_number() == index, "conversion check");
754 assert(index >= LIR_Opr::vreg_base, "must start at vreg_base");
755
756 // old-style calculation; check if old and new method are equal
757 LIR_Opr::OprType t = as_OprType(type);
758 #ifdef __SOFTFP__
759 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
760 t |
761 LIR_Opr::cpu_register |
762 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask);
763 #else // __SOFTFP__
764 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | t |
765 ((type == T_FLOAT || type == T_DOUBLE) ? LIR_Opr::fpu_register : LIR_Opr::cpu_register) |
766 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask);
767 assert(res == old_res, "old and new method not equal");
768 #endif // __SOFTFP__
769 #endif // ASSERT
770
771 return res;
772 }
773
774 // 'index' is computed by FrameMap::local_stack_pos(index); do not use other parameters as
775 // the index is platform independent; a double stack using indices 2 and 3 has always
776 // index 2.
777 static LIR_Opr stack(int index, BasicType type) {
778 LIR_Opr res;
779 switch (type) {
780 case T_OBJECT: // fall through
781 case T_ARRAY:
782 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
783 LIR_Opr::object_type |
784 LIR_Opr::stack_value |
785 LIR_Opr::single_size);
786 break;
787
788 case T_METADATA:
789 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
790 LIR_Opr::metadata_type |
791 LIR_Opr::stack_value |
792 LIR_Opr::single_size);
793 break;
794 case T_INT:
795 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
796 LIR_Opr::int_type |
797 LIR_Opr::stack_value |
798 LIR_Opr::single_size);
799 break;
800
801 case T_ADDRESS:
802 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
803 LIR_Opr::address_type |
804 LIR_Opr::stack_value |
805 LIR_Opr::single_size);
806 break;
807
808 case T_LONG:
809 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
810 LIR_Opr::long_type |
811 LIR_Opr::stack_value |
812 LIR_Opr::double_size);
813 break;
814
815 case T_FLOAT:
816 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
817 LIR_Opr::float_type |
818 LIR_Opr::stack_value |
819 LIR_Opr::single_size);
820 break;
821 case T_DOUBLE:
822 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
823 LIR_Opr::double_type |
824 LIR_Opr::stack_value |
825 LIR_Opr::double_size);
826 break;
827
828 default: ShouldNotReachHere(); res = illegalOpr;
829 }
830
831 #ifdef ASSERT
832 assert(index >= 0, "index must be positive");
833 assert(index == (int)res->data(), "conversion check");
834
835 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
836 LIR_Opr::stack_value |
837 as_OprType(type) |
838 LIR_Opr::size_for(type));
839 assert(res == old_res, "old and new method not equal");
840 #endif
841
842 return res;
843 }
844
845 static LIR_Opr intConst(jint i) { return (LIR_Opr)(new LIR_Const(i)); }
846 static LIR_Opr longConst(jlong l) { return (LIR_Opr)(new LIR_Const(l)); }
847 static LIR_Opr floatConst(jfloat f) { return (LIR_Opr)(new LIR_Const(f)); }
848 static LIR_Opr doubleConst(jdouble d) { return (LIR_Opr)(new LIR_Const(d)); }
849 static LIR_Opr oopConst(jobject o) { return (LIR_Opr)(new LIR_Const(o)); }
850 static LIR_Opr address(LIR_Address* a) { return (LIR_Opr)a; }
851 static LIR_Opr intptrConst(void* p) { return (LIR_Opr)(new LIR_Const(p)); }
852 static LIR_Opr intptrConst(intptr_t v) { return (LIR_Opr)(new LIR_Const((void*)v)); }
853 static LIR_Opr illegal() { return (LIR_Opr)-1; }
854 static LIR_Opr addressConst(jint i) { return (LIR_Opr)(new LIR_Const(i, true)); }
855 static LIR_Opr metadataConst(Metadata* m) { return (LIR_Opr)(new LIR_Const(m)); }
856
857 static LIR_Opr value_type(ValueType* type);
858 };
859
860
861 //-------------------------------------------------------------------------------
862 // LIR Instructions
863 //-------------------------------------------------------------------------------
864 //
865 // Note:
866 // - every instruction has a result operand
867 // - every instruction has an CodeEmitInfo operand (can be revisited later)
868 // - every instruction has a LIR_OpCode operand
869 // - LIR_OpN, means an instruction that has N input operands
870 //
871 // class hierarchy:
872 //
873 class LIR_Op;
874 class LIR_Op0;
875 class LIR_OpLabel;
876 class LIR_Op1;
877 class LIR_OpBranch;
878 class LIR_OpConvert;
879 class LIR_OpAllocObj;
880 class LIR_OpReturn;
881 class LIR_Op2;
882 class LIR_OpDelay;
883 class LIR_Op3;
884 class LIR_OpAllocArray;
885 class LIR_Op4;
886 class LIR_OpCall;
887 class LIR_OpJavaCall;
888 class LIR_OpRTCall;
889 class LIR_OpArrayCopy;
890 class LIR_OpUpdateCRC32;
891 class LIR_OpLock;
892 class LIR_OpTypeCheck;
893 class LIR_OpFlattenedArrayCheck;
894 class LIR_OpNullFreeArrayCheck;
895 class LIR_OpSubstitutabilityCheck;
896 class LIR_OpCompareAndSwap;
897 class LIR_OpLoadKlass;
898 class LIR_OpProfileCall;
899 class LIR_OpProfileType;
900 class LIR_OpProfileInlineType;
901 #ifdef ASSERT
902 class LIR_OpAssert;
903 #endif
904
905 // LIR operation codes
906 enum LIR_Code {
907 lir_none
908 , begin_op0
909 , lir_label
910 , lir_nop
911 , lir_std_entry
912 , lir_osr_entry
913 , lir_breakpoint
914 , lir_rtcall
915 , lir_membar
916 , lir_membar_acquire
917 , lir_membar_release
918 , lir_membar_loadload
919 , lir_membar_storestore
920 , lir_membar_loadstore
921 , lir_membar_storeload
922 , lir_get_thread
923 , lir_on_spin_wait
924 , lir_check_orig_pc
925 , end_op0
926 , begin_op1
927 , lir_push
928 , lir_pop
929 , lir_null_check
930 , lir_return
931 , lir_leal
932 , lir_move
933 , lir_convert
934 , lir_alloc_object
935 , lir_monaddr
936 , lir_sqrt
937 , lir_abs
938 , lir_neg
939 , lir_f2hf
940 , lir_hf2f
941 , lir_safepoint
942 , lir_unwind
943 , lir_load_klass
944 , end_op1
945 , begin_op2
946 , lir_branch
947 , lir_cond_float_branch
948 , lir_cmp
949 , lir_cmp_l2i
950 , lir_ucmp_fd2i
951 , lir_cmp_fd2i
952 , lir_add
953 , lir_sub
954 , lir_mul
955 , lir_div
956 , lir_rem
957 , lir_logic_and
958 , lir_logic_or
959 , lir_logic_xor
960 , lir_shl
961 , lir_shr
962 , lir_ushr
963 , lir_alloc_array
964 , lir_throw
965 , lir_xadd
966 , lir_xchg
967 , end_op2
968 , begin_op3
969 , lir_idiv
970 , lir_irem
971 , lir_fmad
972 , lir_fmaf
973 , end_op3
974 , begin_op4
975 , lir_cmove
976 , end_op4
977 , begin_opJavaCall
978 , lir_static_call
979 , lir_optvirtual_call
980 , lir_icvirtual_call
981 , lir_dynamic_call
982 , end_opJavaCall
983 , begin_opArrayCopy
984 , lir_arraycopy
985 , end_opArrayCopy
986 , begin_opUpdateCRC32
987 , lir_updatecrc32
988 , end_opUpdateCRC32
989 , begin_opLock
990 , lir_lock
991 , lir_unlock
992 , end_opLock
993 , begin_delay_slot
994 , lir_delay_slot
995 , end_delay_slot
996 , begin_opTypeCheck
997 , lir_instanceof
998 , lir_checkcast
999 , lir_store_check
1000 , end_opTypeCheck
1001 , begin_opFlattenedArrayCheck
1002 , lir_flat_array_check
1003 , end_opFlattenedArrayCheck
1004 , begin_opNullFreeArrayCheck
1005 , lir_null_free_array_check
1006 , end_opNullFreeArrayCheck
1007 , begin_opSubstitutabilityCheck
1008 , lir_substitutability_check
1009 , end_opSubstitutabilityCheck
1010 , begin_opCompareAndSwap
1011 , lir_cas_long
1012 , lir_cas_obj
1013 , lir_cas_int
1014 , end_opCompareAndSwap
1015 , begin_opMDOProfile
1016 , lir_profile_call
1017 , lir_profile_type
1018 , lir_profile_inline_type
1019 , end_opMDOProfile
1020 , begin_opAssert
1021 , lir_assert
1022 , end_opAssert
1023 #if INCLUDE_ZGC
1024 , begin_opXLoadBarrierTest
1025 , lir_xloadbarrier_test
1026 , end_opXLoadBarrierTest
1027 #endif
1028 };
1029
1030
1031 enum LIR_Condition {
1032 lir_cond_equal
1033 , lir_cond_notEqual
1034 , lir_cond_less
1035 , lir_cond_lessEqual
1036 , lir_cond_greaterEqual
1037 , lir_cond_greater
1038 , lir_cond_belowEqual
1039 , lir_cond_aboveEqual
1040 , lir_cond_always
1041 , lir_cond_unknown = -1
1042 };
1043
1044
1045 enum LIR_PatchCode {
1046 lir_patch_none,
1047 lir_patch_low,
1048 lir_patch_high,
1049 lir_patch_normal
1050 };
1051
1052
1053 enum LIR_MoveKind {
1054 lir_move_normal,
1055 lir_move_volatile,
1056 lir_move_wide,
1057 lir_move_max_flag
1058 };
1059
1060
1061 // --------------------------------------------------
1062 // LIR_Op
1063 // --------------------------------------------------
1064 class LIR_Op: public CompilationResourceObj {
1065 friend class LIR_OpVisitState;
1066
1067 #ifdef ASSERT
1068 private:
1069 const char * _file;
1070 int _line;
1071 #endif
1072
1073 protected:
1074 LIR_Opr _result;
1075 unsigned short _code;
1076 unsigned short _flags;
1077 CodeEmitInfo* _info;
1078 int _id; // value id for register allocation
1079 Instruction* _source; // for debugging
1080
1081 static void print_condition(outputStream* out, LIR_Condition cond) PRODUCT_RETURN;
1082
1083 protected:
1084 static bool is_in_range(LIR_Code test, LIR_Code start, LIR_Code end) { return start < test && test < end; }
1085
1086 public:
1087 LIR_Op()
1088 :
1089 #ifdef ASSERT
1090 _file(nullptr)
1091 , _line(0),
1092 #endif
1093 _result(LIR_OprFact::illegalOpr)
1094 , _code(lir_none)
1095 , _flags(0)
1096 , _info(nullptr)
1097 , _id(-1)
1098 , _source(nullptr) {}
1099
1100 LIR_Op(LIR_Code code, LIR_Opr result, CodeEmitInfo* info)
1101 :
1102 #ifdef ASSERT
1103 _file(nullptr)
1104 , _line(0),
1105 #endif
1106 _result(result)
1107 , _code(code)
1108 , _flags(0)
1109 , _info(info)
1110 , _id(-1)
1111 , _source(nullptr) {}
1112
1113 CodeEmitInfo* info() const { return _info; }
1114 LIR_Code code() const { return (LIR_Code)_code; }
1115 LIR_Opr result_opr() const { return _result; }
1116 void set_result_opr(LIR_Opr opr) { _result = opr; }
1117
1118 #ifdef ASSERT
1119 void set_file_and_line(const char * file, int line) {
1120 _file = file;
1121 _line = line;
1122 }
1123 #endif
1124
1125 virtual const char * name() const PRODUCT_RETURN_NULL;
1126 virtual void visit(LIR_OpVisitState* state);
1127
1128 int id() const { return _id; }
1129 void set_id(int id) { _id = id; }
1130
1131 Instruction* source() const { return _source; }
1132 void set_source(Instruction* ins) { _source = ins; }
1133
1134 virtual void emit_code(LIR_Assembler* masm) = 0;
1135 virtual void print_instr(outputStream* out) const = 0;
1136 virtual void print_on(outputStream* st) const PRODUCT_RETURN;
1137
1138 virtual bool is_patching() { return false; }
1139 virtual LIR_OpCall* as_OpCall() { return nullptr; }
1140 virtual LIR_OpJavaCall* as_OpJavaCall() { return nullptr; }
1141 virtual LIR_OpLabel* as_OpLabel() { return nullptr; }
1142 virtual LIR_OpDelay* as_OpDelay() { return nullptr; }
1143 virtual LIR_OpLock* as_OpLock() { return nullptr; }
1144 virtual LIR_OpAllocArray* as_OpAllocArray() { return nullptr; }
1145 virtual LIR_OpAllocObj* as_OpAllocObj() { return nullptr; }
1146 virtual LIR_OpBranch* as_OpBranch() { return nullptr; }
1147 virtual LIR_OpReturn* as_OpReturn() { return nullptr; }
1148 virtual LIR_OpRTCall* as_OpRTCall() { return nullptr; }
1149 virtual LIR_OpConvert* as_OpConvert() { return nullptr; }
1150 virtual LIR_Op0* as_Op0() { return nullptr; }
1151 virtual LIR_Op1* as_Op1() { return nullptr; }
1152 virtual LIR_Op2* as_Op2() { return nullptr; }
1153 virtual LIR_Op3* as_Op3() { return nullptr; }
1154 virtual LIR_Op4* as_Op4() { return nullptr; }
1155 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return nullptr; }
1156 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return nullptr; }
1157 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return nullptr; }
1158 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return nullptr; }
1159 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return nullptr; }
1160 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return nullptr; }
1161 virtual LIR_OpCompareAndSwap* as_OpCompareAndSwap() { return nullptr; }
1162 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return nullptr; }
1163 virtual LIR_OpProfileCall* as_OpProfileCall() { return nullptr; }
1164 virtual LIR_OpProfileType* as_OpProfileType() { return nullptr; }
1165 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return nullptr; }
1166 #ifdef ASSERT
1167 virtual LIR_OpAssert* as_OpAssert() { return nullptr; }
1168 #endif
1169
1170 virtual void verify() const {}
1171 };
1172
1173 // for calls
1174 class LIR_OpCall: public LIR_Op {
1175 friend class LIR_OpVisitState;
1176
1177 protected:
1178 address _addr;
1179 LIR_OprList* _arguments;
1180 protected:
1181 LIR_OpCall(LIR_Code code, address addr, LIR_Opr result,
1182 LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1183 : LIR_Op(code, result, info)
1184 , _addr(addr)
1185 , _arguments(arguments) {}
1186
1187 public:
1188 address addr() const { return _addr; }
1189 const LIR_OprList* arguments() const { return _arguments; }
1190 virtual LIR_OpCall* as_OpCall() { return this; }
1191 };
1192
1193
1194 // --------------------------------------------------
1195 // LIR_OpJavaCall
1196 // --------------------------------------------------
1197 class LIR_OpJavaCall: public LIR_OpCall {
1198 friend class LIR_OpVisitState;
1199
1200 private:
1201 ciMethod* _method;
1202 LIR_Opr _receiver;
1203 LIR_Opr _method_handle_invoke_SP_save_opr; // Used in LIR_OpVisitState::visit to store the reference to FrameMap::method_handle_invoke_SP_save_opr.
1204
1205 public:
1206 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1207 LIR_Opr receiver, LIR_Opr result,
1208 address addr, LIR_OprList* arguments,
1209 CodeEmitInfo* info)
1210 : LIR_OpCall(code, addr, result, arguments, info)
1211 , _method(method)
1212 , _receiver(receiver)
1213 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1214 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1215
1216 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1217 LIR_Opr receiver, LIR_Opr result, intptr_t vtable_offset,
1218 LIR_OprList* arguments, CodeEmitInfo* info)
1219 : LIR_OpCall(code, (address)vtable_offset, result, arguments, info)
1220 , _method(method)
1221 , _receiver(receiver)
1222 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1223 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1224
1225 LIR_Opr receiver() const { return _receiver; }
1226 ciMethod* method() const { return _method; }
1227
1228 // JSR 292 support.
1229 bool is_invokedynamic() const { return code() == lir_dynamic_call; }
1230 bool is_method_handle_invoke() const {
1231 return method()->is_compiled_lambda_form() || // Java-generated lambda form
1232 method()->is_method_handle_intrinsic(); // JVM-generated MH intrinsic
1233 }
1234
1235 virtual void emit_code(LIR_Assembler* masm);
1236 virtual LIR_OpJavaCall* as_OpJavaCall() { return this; }
1237 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1238
1239 bool maybe_return_as_fields(ciInlineKlass** vk = nullptr) const;
1240 };
1241
1242 // --------------------------------------------------
1243 // LIR_OpLabel
1244 // --------------------------------------------------
1245 // Location where a branch can continue
1246 class LIR_OpLabel: public LIR_Op {
1247 friend class LIR_OpVisitState;
1248
1249 private:
1250 Label* _label;
1251 public:
1252 LIR_OpLabel(Label* lbl)
1253 : LIR_Op(lir_label, LIR_OprFact::illegalOpr, nullptr)
1254 , _label(lbl) {}
1255 Label* label() const { return _label; }
1256
1257 virtual void emit_code(LIR_Assembler* masm);
1258 virtual LIR_OpLabel* as_OpLabel() { return this; }
1259 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1260 };
1261
1262 // LIR_OpArrayCopy
1263 class LIR_OpArrayCopy: public LIR_Op {
1264 friend class LIR_OpVisitState;
1265
1266 private:
1267 ArrayCopyStub* _stub;
1268 LIR_Opr _src;
1269 LIR_Opr _src_pos;
1270 LIR_Opr _dst;
1271 LIR_Opr _dst_pos;
1272 LIR_Opr _length;
1273 LIR_Opr _tmp;
1274 ciArrayKlass* _expected_type;
1275 int _flags;
1276
1277 public:
1278 enum Flags {
1279 src_null_check = 1 << 0,
1280 dst_null_check = 1 << 1,
1281 src_pos_positive_check = 1 << 2,
1282 dst_pos_positive_check = 1 << 3,
1283 length_positive_check = 1 << 4,
1284 src_range_check = 1 << 5,
1285 dst_range_check = 1 << 6,
1286 type_check = 1 << 7,
1287 overlapping = 1 << 8,
1288 unaligned = 1 << 9,
1289 src_objarray = 1 << 10,
1290 dst_objarray = 1 << 11,
1291 always_slow_path = 1 << 12,
1292 src_inlinetype_check = 1 << 13,
1293 dst_inlinetype_check = 1 << 14,
1294 all_flags = (1 << 15) - 1
1295 };
1296
1297 LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp,
1298 ciArrayKlass* expected_type, int flags, CodeEmitInfo* info);
1299
1300 LIR_Opr src() const { return _src; }
1301 LIR_Opr src_pos() const { return _src_pos; }
1302 LIR_Opr dst() const { return _dst; }
1303 LIR_Opr dst_pos() const { return _dst_pos; }
1304 LIR_Opr length() const { return _length; }
1305 LIR_Opr tmp() const { return _tmp; }
1306 int flags() const { return _flags; }
1307 ciArrayKlass* expected_type() const { return _expected_type; }
1308 ArrayCopyStub* stub() const { return _stub; }
1309
1310 virtual void emit_code(LIR_Assembler* masm);
1311 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return this; }
1312 void print_instr(outputStream* out) const PRODUCT_RETURN;
1313 };
1314
1315 // LIR_OpUpdateCRC32
1316 class LIR_OpUpdateCRC32: public LIR_Op {
1317 friend class LIR_OpVisitState;
1318
1319 private:
1320 LIR_Opr _crc;
1321 LIR_Opr _val;
1322
1323 public:
1324
1325 LIR_OpUpdateCRC32(LIR_Opr crc, LIR_Opr val, LIR_Opr res);
1326
1327 LIR_Opr crc() const { return _crc; }
1328 LIR_Opr val() const { return _val; }
1329
1330 virtual void emit_code(LIR_Assembler* masm);
1331 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return this; }
1332 void print_instr(outputStream* out) const PRODUCT_RETURN;
1333 };
1334
1335 // --------------------------------------------------
1336 // LIR_Op0
1337 // --------------------------------------------------
1338 class LIR_Op0: public LIR_Op {
1339 friend class LIR_OpVisitState;
1340
1341 public:
1342 LIR_Op0(LIR_Code code)
1343 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1344 LIR_Op0(LIR_Code code, LIR_Opr result, CodeEmitInfo* info = nullptr)
1345 : LIR_Op(code, result, info) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1346
1347 virtual void emit_code(LIR_Assembler* masm);
1348 virtual LIR_Op0* as_Op0() { return this; }
1349 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1350 };
1351
1352
1353 // --------------------------------------------------
1354 // LIR_Op1
1355 // --------------------------------------------------
1356
1357 class LIR_Op1: public LIR_Op {
1358 friend class LIR_OpVisitState;
1359
1360 protected:
1361 LIR_Opr _opr; // input operand
1362 LIR_Opr _tmp;
1363 BasicType _type; // Operand types
1364 LIR_PatchCode _patch; // only required with patchin (NEEDS_CLEANUP: do we want a special instruction for patching?)
1365
1366 static void print_patch_code(outputStream* out, LIR_PatchCode code);
1367
1368 void set_kind(LIR_MoveKind kind) {
1369 assert(code() == lir_move, "must be");
1370 _flags = kind;
1371 }
1372
1373 public:
1374 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result = LIR_OprFact::illegalOpr, BasicType type = T_ILLEGAL, LIR_PatchCode patch = lir_patch_none, CodeEmitInfo* info = nullptr)
1375 : LIR_Op(code, result, info)
1376 , _opr(opr)
1377 , _tmp(LIR_OprFact::illegalOpr)
1378 , _type(type)
1379 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1380
1381 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, LIR_Opr tmp, BasicType type = T_ILLEGAL, LIR_PatchCode patch = lir_patch_none, CodeEmitInfo* info = nullptr)
1382 : LIR_Op(code, result, info)
1383 , _opr(opr)
1384 , _tmp(tmp)
1385 , _type(type)
1386 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1387
1388 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, BasicType type, LIR_PatchCode patch, CodeEmitInfo* info, LIR_MoveKind kind)
1389 : LIR_Op(code, result, info)
1390 , _opr(opr)
1391 , _tmp(LIR_OprFact::illegalOpr)
1392 , _type(type)
1393 , _patch(patch) {
1394 assert(code == lir_move, "must be");
1395 set_kind(kind);
1396 }
1397
1398 LIR_Op1(LIR_Code code, LIR_Opr opr, CodeEmitInfo* info)
1399 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1400 , _opr(opr)
1401 , _tmp(LIR_OprFact::illegalOpr)
1402 , _type(T_ILLEGAL)
1403 , _patch(lir_patch_none) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1404
1405 LIR_Opr in_opr() const { return _opr; }
1406 LIR_Opr tmp_opr() const { return _tmp; }
1407 LIR_PatchCode patch_code() const { return _patch; }
1408 BasicType type() const { return _type; }
1409
1410 LIR_MoveKind move_kind() const {
1411 assert(code() == lir_move, "must be");
1412 return (LIR_MoveKind)_flags;
1413 }
1414
1415 virtual bool is_patching() { return _patch != lir_patch_none; }
1416 virtual void emit_code(LIR_Assembler* masm);
1417 virtual LIR_Op1* as_Op1() { return this; }
1418 virtual const char * name() const PRODUCT_RETURN_NULL;
1419
1420 void set_in_opr(LIR_Opr opr) { _opr = opr; }
1421
1422 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1423 virtual void verify() const;
1424 };
1425
1426
1427 // for runtime calls
1428 class LIR_OpRTCall: public LIR_OpCall {
1429 friend class LIR_OpVisitState;
1430
1431 private:
1432 LIR_Opr _tmp;
1433 public:
1434 LIR_OpRTCall(address addr, LIR_Opr tmp,
1435 LIR_Opr result, LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1436 : LIR_OpCall(lir_rtcall, addr, result, arguments, info)
1437 , _tmp(tmp) {}
1438
1439 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1440 virtual void emit_code(LIR_Assembler* masm);
1441 virtual LIR_OpRTCall* as_OpRTCall() { return this; }
1442
1443 LIR_Opr tmp() const { return _tmp; }
1444
1445 virtual void verify() const;
1446 };
1447
1448
1449
1450 class LIR_OpReturn: public LIR_Op1 {
1451 friend class LIR_OpVisitState;
1452
1453 private:
1454 C1SafepointPollStub* _stub;
1455
1456 public:
1457 LIR_OpReturn(LIR_Opr opr);
1458
1459 C1SafepointPollStub* stub() const { return _stub; }
1460 virtual LIR_OpReturn* as_OpReturn() { return this; }
1461 };
1462
1463 class ConversionStub;
1464
1465 class LIR_OpConvert: public LIR_Op1 {
1466 friend class LIR_OpVisitState;
1467
1468 private:
1469 Bytecodes::Code _bytecode;
1470 ConversionStub* _stub;
1471
1472 public:
1473 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub)
1474 : LIR_Op1(lir_convert, opr, result)
1475 , _bytecode(code)
1476 , _stub(stub) {}
1477
1478 Bytecodes::Code bytecode() const { return _bytecode; }
1479 ConversionStub* stub() const { return _stub; }
1480
1481 virtual void emit_code(LIR_Assembler* masm);
1482 virtual LIR_OpConvert* as_OpConvert() { return this; }
1483 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1484
1485 static void print_bytecode(outputStream* out, Bytecodes::Code code) PRODUCT_RETURN;
1486 };
1487
1488
1489 // LIR_OpAllocObj
1490 class LIR_OpAllocObj : public LIR_Op1 {
1491 friend class LIR_OpVisitState;
1492
1493 private:
1494 LIR_Opr _tmp1;
1495 LIR_Opr _tmp2;
1496 LIR_Opr _tmp3;
1497 LIR_Opr _tmp4;
1498 int _hdr_size;
1499 int _obj_size;
1500 CodeStub* _stub;
1501 bool _init_check;
1502
1503 public:
1504 LIR_OpAllocObj(LIR_Opr klass, LIR_Opr result,
1505 LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1506 int hdr_size, int obj_size, bool init_check, CodeStub* stub)
1507 : LIR_Op1(lir_alloc_object, klass, result)
1508 , _tmp1(t1)
1509 , _tmp2(t2)
1510 , _tmp3(t3)
1511 , _tmp4(t4)
1512 , _hdr_size(hdr_size)
1513 , _obj_size(obj_size)
1514 , _stub(stub)
1515 , _init_check(init_check) { }
1516
1517 LIR_Opr klass() const { return in_opr(); }
1518 LIR_Opr obj() const { return result_opr(); }
1519 LIR_Opr tmp1() const { return _tmp1; }
1520 LIR_Opr tmp2() const { return _tmp2; }
1521 LIR_Opr tmp3() const { return _tmp3; }
1522 LIR_Opr tmp4() const { return _tmp4; }
1523 int header_size() const { return _hdr_size; }
1524 int object_size() const { return _obj_size; }
1525 bool init_check() const { return _init_check; }
1526 CodeStub* stub() const { return _stub; }
1527
1528 virtual void emit_code(LIR_Assembler* masm);
1529 virtual LIR_OpAllocObj * as_OpAllocObj () { return this; }
1530 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1531 };
1532
1533
1534 // LIR_OpTypeCheck
1535 class LIR_OpTypeCheck: public LIR_Op {
1536 friend class LIR_OpVisitState;
1537
1538 private:
1539 LIR_Opr _object;
1540 LIR_Opr _array;
1541 ciKlass* _klass;
1542 LIR_Opr _tmp1;
1543 LIR_Opr _tmp2;
1544 LIR_Opr _tmp3;
1545 CodeEmitInfo* _info_for_patch;
1546 CodeEmitInfo* _info_for_exception;
1547 CodeStub* _stub;
1548 ciMethod* _profiled_method;
1549 int _profiled_bci;
1550 bool _should_profile;
1551 bool _fast_check;
1552 bool _need_null_check;
1553
1554 public:
1555 LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
1556 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1557 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub, bool need_null_check = true);
1558 LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array,
1559 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception);
1560
1561 LIR_Opr object() const { return _object; }
1562 LIR_Opr array() const { assert(code() == lir_store_check, "not valid"); return _array; }
1563 LIR_Opr tmp1() const { return _tmp1; }
1564 LIR_Opr tmp2() const { return _tmp2; }
1565 LIR_Opr tmp3() const { return _tmp3; }
1566 ciKlass* klass() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _klass; }
1567 bool fast_check() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _fast_check; }
1568 CodeEmitInfo* info_for_patch() const { return _info_for_patch; }
1569 CodeEmitInfo* info_for_exception() const { return _info_for_exception; }
1570 CodeStub* stub() const { return _stub; }
1571
1572 // MethodData* profiling
1573 void set_profiled_method(ciMethod *method) { _profiled_method = method; }
1574 void set_profiled_bci(int bci) { _profiled_bci = bci; }
1575 void set_should_profile(bool b) { _should_profile = b; }
1576 ciMethod* profiled_method() const { return _profiled_method; }
1577 int profiled_bci() const { return _profiled_bci; }
1578 bool should_profile() const { return _should_profile; }
1579 bool need_null_check() const { return _need_null_check; }
1580 virtual bool is_patching() { return _info_for_patch != nullptr; }
1581 virtual void emit_code(LIR_Assembler* masm);
1582 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return this; }
1583 void print_instr(outputStream* out) const PRODUCT_RETURN;
1584 };
1585
1586 // LIR_OpFlattenedArrayCheck
1587 class LIR_OpFlattenedArrayCheck: public LIR_Op {
1588 friend class LIR_OpVisitState;
1589
1590 private:
1591 LIR_Opr _array;
1592 LIR_Opr _value;
1593 LIR_Opr _tmp;
1594 CodeStub* _stub;
1595 public:
1596 LIR_OpFlattenedArrayCheck(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
1597 LIR_Opr array() const { return _array; }
1598 LIR_Opr value() const { return _value; }
1599 LIR_Opr tmp() const { return _tmp; }
1600 CodeStub* stub() const { return _stub; }
1601
1602 virtual void emit_code(LIR_Assembler* masm);
1603 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return this; }
1604 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1605 };
1606
1607 // LIR_OpNullFreeArrayCheck
1608 class LIR_OpNullFreeArrayCheck: public LIR_Op {
1609 friend class LIR_OpVisitState;
1610
1611 private:
1612 LIR_Opr _array;
1613 LIR_Opr _tmp;
1614 public:
1615 LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp);
1616 LIR_Opr array() const { return _array; }
1617 LIR_Opr tmp() const { return _tmp; }
1618
1619 virtual void emit_code(LIR_Assembler* masm);
1620 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return this; }
1621 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1622 };
1623
1624 class LIR_OpSubstitutabilityCheck: public LIR_Op {
1625 friend class LIR_OpVisitState;
1626
1627 private:
1628 LIR_Opr _left;
1629 LIR_Opr _right;
1630 LIR_Opr _equal_result;
1631 LIR_Opr _not_equal_result;
1632 LIR_Opr _tmp1;
1633 LIR_Opr _tmp2;
1634 ciKlass* _left_klass;
1635 ciKlass* _right_klass;
1636 LIR_Opr _left_klass_op;
1637 LIR_Opr _right_klass_op;
1638 CodeStub* _stub;
1639 public:
1640 LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
1641 LIR_Opr tmp1, LIR_Opr tmp2,
1642 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
1643 CodeEmitInfo* info, CodeStub* stub);
1644
1645 LIR_Opr left() const { return _left; }
1646 LIR_Opr right() const { return _right; }
1647 LIR_Opr equal_result() const { return _equal_result; }
1648 LIR_Opr not_equal_result() const { return _not_equal_result; }
1649 LIR_Opr tmp1() const { return _tmp1; }
1650 LIR_Opr tmp2() const { return _tmp2; }
1651 ciKlass* left_klass() const { return _left_klass; }
1652 ciKlass* right_klass() const { return _right_klass; }
1653 LIR_Opr left_klass_op() const { return _left_klass_op; }
1654 LIR_Opr right_klass_op() const { return _right_klass_op; }
1655 CodeStub* stub() const { return _stub; }
1656
1657 virtual void emit_code(LIR_Assembler* masm);
1658 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return this; }
1659 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1660 };
1661
1662 // LIR_Op2
1663 class LIR_Op2: public LIR_Op {
1664 friend class LIR_OpVisitState;
1665
1666 protected:
1667 LIR_Opr _opr1;
1668 LIR_Opr _opr2;
1669 LIR_Opr _tmp1;
1670 LIR_Opr _tmp2;
1671 LIR_Opr _tmp3;
1672 LIR_Opr _tmp4;
1673 LIR_Opr _tmp5;
1674 LIR_Condition _condition;
1675 BasicType _type;
1676
1677 void verify() const;
1678
1679 public:
1680 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1681 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1682 , _opr1(opr1)
1683 , _opr2(opr2)
1684 , _tmp1(LIR_OprFact::illegalOpr)
1685 , _tmp2(LIR_OprFact::illegalOpr)
1686 , _tmp3(LIR_OprFact::illegalOpr)
1687 , _tmp4(LIR_OprFact::illegalOpr)
1688 , _tmp5(LIR_OprFact::illegalOpr)
1689 , _condition(condition)
1690 , _type(type) {
1691 assert(code == lir_cmp || code == lir_branch || code == lir_cond_float_branch || code == lir_assert, "code check");
1692 }
1693
1694 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type)
1695 : LIR_Op(code, result, nullptr)
1696 , _opr1(opr1)
1697 , _opr2(opr2)
1698 , _tmp1(LIR_OprFact::illegalOpr)
1699 , _tmp2(LIR_OprFact::illegalOpr)
1700 , _tmp3(LIR_OprFact::illegalOpr)
1701 , _tmp4(LIR_OprFact::illegalOpr)
1702 , _tmp5(LIR_OprFact::illegalOpr)
1703 , _condition(condition)
1704 , _type(type) {
1705 assert(code == lir_cmove, "code check");
1706 assert(type != T_ILLEGAL, "cmove should have type");
1707 }
1708
1709 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result = LIR_OprFact::illegalOpr,
1710 CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1711 : LIR_Op(code, result, info)
1712 , _opr1(opr1)
1713 , _opr2(opr2)
1714 , _tmp1(LIR_OprFact::illegalOpr)
1715 , _tmp2(LIR_OprFact::illegalOpr)
1716 , _tmp3(LIR_OprFact::illegalOpr)
1717 , _tmp4(LIR_OprFact::illegalOpr)
1718 , _tmp5(LIR_OprFact::illegalOpr)
1719 , _condition(lir_cond_unknown)
1720 , _type(type) {
1721 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1722 }
1723
1724 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, LIR_Opr tmp1, LIR_Opr tmp2 = LIR_OprFact::illegalOpr,
1725 LIR_Opr tmp3 = LIR_OprFact::illegalOpr, LIR_Opr tmp4 = LIR_OprFact::illegalOpr, LIR_Opr tmp5 = LIR_OprFact::illegalOpr)
1726 : LIR_Op(code, result, nullptr)
1727 , _opr1(opr1)
1728 , _opr2(opr2)
1729 , _tmp1(tmp1)
1730 , _tmp2(tmp2)
1731 , _tmp3(tmp3)
1732 , _tmp4(tmp4)
1733 , _tmp5(tmp5)
1734 , _condition(lir_cond_unknown)
1735 , _type(T_ILLEGAL) {
1736 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1737 }
1738
1739 LIR_Opr in_opr1() const { return _opr1; }
1740 LIR_Opr in_opr2() const { return _opr2; }
1741 BasicType type() const { return _type; }
1742 LIR_Opr tmp1_opr() const { return _tmp1; }
1743 LIR_Opr tmp2_opr() const { return _tmp2; }
1744 LIR_Opr tmp3_opr() const { return _tmp3; }
1745 LIR_Opr tmp4_opr() const { return _tmp4; }
1746 LIR_Opr tmp5_opr() const { return _tmp5; }
1747 LIR_Condition condition() const {
1748 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch || code() == lir_assert, "only valid for branch and assert"); return _condition;
1749 }
1750 void set_condition(LIR_Condition condition) {
1751 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch, "only valid for branch"); _condition = condition;
1752 }
1753
1754 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1755 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1756
1757 virtual void emit_code(LIR_Assembler* masm);
1758 virtual LIR_Op2* as_Op2() { return this; }
1759 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1760 };
1761
1762 class LIR_OpBranch: public LIR_Op2 {
1763 friend class LIR_OpVisitState;
1764
1765 private:
1766 Label* _label;
1767 BlockBegin* _block; // if this is a branch to a block, this is the block
1768 BlockBegin* _ublock; // if this is a float-branch, this is the unordered block
1769 CodeStub* _stub; // if this is a branch to a stub, this is the stub
1770
1771 public:
1772 LIR_OpBranch(LIR_Condition cond, Label* lbl)
1773 : LIR_Op2(lir_branch, cond, LIR_OprFact::illegalOpr, LIR_OprFact::illegalOpr, (CodeEmitInfo*) nullptr)
1774 , _label(lbl)
1775 , _block(nullptr)
1776 , _ublock(nullptr)
1777 , _stub(nullptr) { }
1778
1779 LIR_OpBranch(LIR_Condition cond, BlockBegin* block);
1780 LIR_OpBranch(LIR_Condition cond, CodeStub* stub);
1781
1782 // for unordered comparisons
1783 LIR_OpBranch(LIR_Condition cond, BlockBegin* block, BlockBegin* ublock);
1784
1785 LIR_Condition cond() const {
1786 return condition();
1787 }
1788
1789 void set_cond(LIR_Condition cond) {
1790 set_condition(cond);
1791 }
1792
1793 Label* label() const { return _label; }
1794 BlockBegin* block() const { return _block; }
1795 BlockBegin* ublock() const { return _ublock; }
1796 CodeStub* stub() const { return _stub; }
1797
1798 void change_block(BlockBegin* b);
1799 void change_ublock(BlockBegin* b);
1800 void negate_cond();
1801
1802 virtual void emit_code(LIR_Assembler* masm);
1803 virtual LIR_OpBranch* as_OpBranch() { return this; }
1804 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1805 };
1806
1807 class LIR_OpAllocArray : public LIR_Op {
1808 friend class LIR_OpVisitState;
1809
1810 private:
1811 LIR_Opr _klass;
1812 LIR_Opr _len;
1813 LIR_Opr _tmp1;
1814 LIR_Opr _tmp2;
1815 LIR_Opr _tmp3;
1816 LIR_Opr _tmp4;
1817 CodeStub* _stub;
1818 BasicType _type;
1819 bool _zero_array;
1820 bool _is_null_free;
1821
1822 public:
1823 LIR_OpAllocArray(LIR_Opr klass, LIR_Opr len, LIR_Opr result, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4, BasicType type, CodeStub* stub, bool zero_array, bool is_null_free)
1824 : LIR_Op(lir_alloc_array, result, nullptr)
1825 , _klass(klass)
1826 , _len(len)
1827 , _tmp1(t1)
1828 , _tmp2(t2)
1829 , _tmp3(t3)
1830 , _tmp4(t4)
1831 , _stub(stub)
1832 , _type(type)
1833 , _zero_array(zero_array)
1834 , _is_null_free(is_null_free) {}
1835
1836 LIR_Opr klass() const { return _klass; }
1837 LIR_Opr len() const { return _len; }
1838 LIR_Opr obj() const { return result_opr(); }
1839 LIR_Opr tmp1() const { return _tmp1; }
1840 LIR_Opr tmp2() const { return _tmp2; }
1841 LIR_Opr tmp3() const { return _tmp3; }
1842 LIR_Opr tmp4() const { return _tmp4; }
1843 BasicType type() const { return _type; }
1844 CodeStub* stub() const { return _stub; }
1845 bool zero_array() const { return _zero_array; }
1846 bool is_null_free() const { return _is_null_free;}
1847
1848 virtual void emit_code(LIR_Assembler* masm);
1849 virtual LIR_OpAllocArray * as_OpAllocArray () { return this; }
1850 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1851 };
1852
1853
1854 class LIR_Op3: public LIR_Op {
1855 friend class LIR_OpVisitState;
1856
1857 private:
1858 LIR_Opr _opr1;
1859 LIR_Opr _opr2;
1860 LIR_Opr _opr3;
1861 public:
1862 LIR_Op3(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr result, CodeEmitInfo* info = nullptr)
1863 : LIR_Op(code, result, info)
1864 , _opr1(opr1)
1865 , _opr2(opr2)
1866 , _opr3(opr3) { assert(is_in_range(code, begin_op3, end_op3), "code check"); }
1867 LIR_Opr in_opr1() const { return _opr1; }
1868 LIR_Opr in_opr2() const { return _opr2; }
1869 LIR_Opr in_opr3() const { return _opr3; }
1870
1871 virtual void emit_code(LIR_Assembler* masm);
1872 virtual LIR_Op3* as_Op3() { return this; }
1873 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1874 };
1875
1876 class LIR_Op4: public LIR_Op {
1877 friend class LIR_OpVisitState;
1878 protected:
1879 LIR_Opr _opr1;
1880 LIR_Opr _opr2;
1881 LIR_Opr _opr3;
1882 LIR_Opr _opr4;
1883 LIR_Opr _tmp1;
1884 LIR_Opr _tmp2;
1885 LIR_Opr _tmp3;
1886 LIR_Opr _tmp4;
1887 LIR_Opr _tmp5;
1888 LIR_Condition _condition;
1889 BasicType _type;
1890
1891 public:
1892 LIR_Op4(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr opr4,
1893 LIR_Opr result, BasicType type)
1894 : LIR_Op(code, result, nullptr)
1895 , _opr1(opr1)
1896 , _opr2(opr2)
1897 , _opr3(opr3)
1898 , _opr4(opr4)
1899 , _tmp1(LIR_OprFact::illegalOpr)
1900 , _tmp2(LIR_OprFact::illegalOpr)
1901 , _tmp3(LIR_OprFact::illegalOpr)
1902 , _tmp4(LIR_OprFact::illegalOpr)
1903 , _tmp5(LIR_OprFact::illegalOpr)
1904 , _condition(condition)
1905 , _type(type) {
1906 assert(code == lir_cmove, "code check");
1907 assert(type != T_ILLEGAL, "cmove should have type");
1908 }
1909
1910 LIR_Opr in_opr1() const { return _opr1; }
1911 LIR_Opr in_opr2() const { return _opr2; }
1912 LIR_Opr in_opr3() const { return _opr3; }
1913 LIR_Opr in_opr4() const { return _opr4; }
1914 BasicType type() const { return _type; }
1915 LIR_Opr tmp1_opr() const { return _tmp1; }
1916 LIR_Opr tmp2_opr() const { return _tmp2; }
1917 LIR_Opr tmp3_opr() const { return _tmp3; }
1918 LIR_Opr tmp4_opr() const { return _tmp4; }
1919 LIR_Opr tmp5_opr() const { return _tmp5; }
1920
1921 LIR_Condition condition() const { return _condition; }
1922 void set_condition(LIR_Condition condition) { _condition = condition; }
1923
1924 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1925 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1926 void set_in_opr3(LIR_Opr opr) { _opr3 = opr; }
1927 void set_in_opr4(LIR_Opr opr) { _opr4 = opr; }
1928 virtual void emit_code(LIR_Assembler* masm);
1929 virtual LIR_Op4* as_Op4() { return this; }
1930
1931 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1932 };
1933
1934 //--------------------------------
1935 class LabelObj: public CompilationResourceObj {
1936 private:
1937 Label _label;
1938 public:
1939 LabelObj() {}
1940 Label* label() { return &_label; }
1941 };
1942
1943
1944 class LIR_OpLock: public LIR_Op {
1945 friend class LIR_OpVisitState;
1946
1947 private:
1948 LIR_Opr _hdr;
1949 LIR_Opr _obj;
1950 LIR_Opr _lock;
1951 LIR_Opr _scratch;
1952 CodeStub* _stub;
1953 CodeStub* _throw_ie_stub;
1954 public:
1955 LIR_OpLock(LIR_Code code, LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_ie_stub=nullptr)
1956 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1957 , _hdr(hdr)
1958 , _obj(obj)
1959 , _lock(lock)
1960 , _scratch(scratch)
1961 , _stub(stub)
1962 , _throw_ie_stub(throw_ie_stub) {}
1963
1964 LIR_Opr hdr_opr() const { return _hdr; }
1965 LIR_Opr obj_opr() const { return _obj; }
1966 LIR_Opr lock_opr() const { return _lock; }
1967 LIR_Opr scratch_opr() const { return _scratch; }
1968 CodeStub* stub() const { return _stub; }
1969 CodeStub* throw_ie_stub() const { return _throw_ie_stub; }
1970
1971 virtual void emit_code(LIR_Assembler* masm);
1972 virtual LIR_OpLock* as_OpLock() { return this; }
1973 void print_instr(outputStream* out) const PRODUCT_RETURN;
1974 };
1975
1976 class LIR_OpLoadKlass: public LIR_Op {
1977 friend class LIR_OpVisitState;
1978
1979 private:
1980 LIR_Opr _obj;
1981 public:
1982 LIR_OpLoadKlass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info)
1983 : LIR_Op(lir_load_klass, result, info)
1984 , _obj(obj)
1985 {}
1986
1987 LIR_Opr obj() const { return _obj; }
1988
1989 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return this; }
1990 virtual void emit_code(LIR_Assembler* masm);
1991 void print_instr(outputStream* out) const PRODUCT_RETURN;
1992 };
1993
1994 class LIR_OpDelay: public LIR_Op {
1995 friend class LIR_OpVisitState;
1996
1997 private:
1998 LIR_Op* _op;
1999
2000 public:
2001 LIR_OpDelay(LIR_Op* op, CodeEmitInfo* info):
2002 LIR_Op(lir_delay_slot, LIR_OprFact::illegalOpr, info),
2003 _op(op) {
2004 assert(op->code() == lir_nop, "should be filling with nops");
2005 }
2006 virtual void emit_code(LIR_Assembler* masm);
2007 virtual LIR_OpDelay* as_OpDelay() { return this; }
2008 void print_instr(outputStream* out) const PRODUCT_RETURN;
2009 LIR_Op* delay_op() const { return _op; }
2010 CodeEmitInfo* call_info() const { return info(); }
2011 };
2012
2013 #ifdef ASSERT
2014 // LIR_OpAssert
2015 class LIR_OpAssert : public LIR_Op2 {
2016 friend class LIR_OpVisitState;
2017
2018 private:
2019 const char* _msg;
2020 bool _halt;
2021
2022 public:
2023 LIR_OpAssert(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, const char* msg, bool halt)
2024 : LIR_Op2(lir_assert, condition, opr1, opr2)
2025 , _msg(msg)
2026 , _halt(halt) {
2027 }
2028
2029 const char* msg() const { return _msg; }
2030 bool halt() const { return _halt; }
2031
2032 virtual void emit_code(LIR_Assembler* masm);
2033 virtual LIR_OpAssert* as_OpAssert() { return this; }
2034 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2035 };
2036 #endif
2037
2038 // LIR_OpCompareAndSwap
2039 class LIR_OpCompareAndSwap : public LIR_Op {
2040 friend class LIR_OpVisitState;
2041
2042 private:
2043 LIR_Opr _addr;
2044 LIR_Opr _cmp_value;
2045 LIR_Opr _new_value;
2046 LIR_Opr _tmp1;
2047 LIR_Opr _tmp2;
2048
2049 public:
2050 LIR_OpCompareAndSwap(LIR_Code code, LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2051 LIR_Opr t1, LIR_Opr t2, LIR_Opr result)
2052 : LIR_Op(code, result, nullptr) // no result, no info
2053 , _addr(addr)
2054 , _cmp_value(cmp_value)
2055 , _new_value(new_value)
2056 , _tmp1(t1)
2057 , _tmp2(t2) { }
2058
2059 LIR_Opr addr() const { return _addr; }
2060 LIR_Opr cmp_value() const { return _cmp_value; }
2061 LIR_Opr new_value() const { return _new_value; }
2062 LIR_Opr tmp1() const { return _tmp1; }
2063 LIR_Opr tmp2() const { return _tmp2; }
2064
2065 virtual void emit_code(LIR_Assembler* masm);
2066 virtual LIR_OpCompareAndSwap * as_OpCompareAndSwap () { return this; }
2067 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2068 };
2069
2070 // LIR_OpProfileCall
2071 class LIR_OpProfileCall : public LIR_Op {
2072 friend class LIR_OpVisitState;
2073
2074 private:
2075 ciMethod* _profiled_method;
2076 int _profiled_bci;
2077 ciMethod* _profiled_callee;
2078 LIR_Opr _mdo;
2079 LIR_Opr _recv;
2080 LIR_Opr _tmp1;
2081 ciKlass* _known_holder;
2082
2083 public:
2084 // Destroys recv
2085 LIR_OpProfileCall(ciMethod* profiled_method, int profiled_bci, ciMethod* profiled_callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* known_holder)
2086 : LIR_Op(lir_profile_call, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2087 , _profiled_method(profiled_method)
2088 , _profiled_bci(profiled_bci)
2089 , _profiled_callee(profiled_callee)
2090 , _mdo(mdo)
2091 , _recv(recv)
2092 , _tmp1(t1)
2093 , _known_holder(known_holder) { }
2094
2095 ciMethod* profiled_method() const { return _profiled_method; }
2096 int profiled_bci() const { return _profiled_bci; }
2097 ciMethod* profiled_callee() const { return _profiled_callee; }
2098 LIR_Opr mdo() const { return _mdo; }
2099 LIR_Opr recv() const { return _recv; }
2100 LIR_Opr tmp1() const { return _tmp1; }
2101 ciKlass* known_holder() const { return _known_holder; }
2102
2103 virtual void emit_code(LIR_Assembler* masm);
2104 virtual LIR_OpProfileCall* as_OpProfileCall() { return this; }
2105 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2106 bool should_profile_receiver_type() const {
2107 bool callee_is_static = _profiled_callee->is_loaded() && _profiled_callee->is_static();
2108 bool callee_is_private = _profiled_callee->is_loaded() && _profiled_callee->is_private();
2109 Bytecodes::Code bc = _profiled_method->java_code_at_bci(_profiled_bci);
2110 bool call_is_virtual = (bc == Bytecodes::_invokevirtual && !callee_is_private) || bc == Bytecodes::_invokeinterface;
2111 return C1ProfileVirtualCalls && call_is_virtual && !callee_is_static;
2112 }
2113 };
2114
2115 // LIR_OpProfileType
2116 class LIR_OpProfileType : public LIR_Op {
2117 friend class LIR_OpVisitState;
2118
2119 private:
2120 LIR_Opr _mdp;
2121 LIR_Opr _obj;
2122 LIR_Opr _tmp;
2123 ciKlass* _exact_klass; // non null if we know the klass statically (no need to load it from _obj)
2124 intptr_t _current_klass; // what the profiling currently reports
2125 bool _not_null; // true if we know statically that _obj cannot be null
2126 bool _no_conflict; // true if we're profling parameters, _exact_klass is not null and we know
2127 // _exact_klass it the only possible type for this parameter in any context.
2128
2129 public:
2130 // Destroys recv
2131 LIR_OpProfileType(LIR_Opr mdp, LIR_Opr obj, ciKlass* exact_klass, intptr_t current_klass, LIR_Opr tmp, bool not_null, bool no_conflict)
2132 : LIR_Op(lir_profile_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2133 , _mdp(mdp)
2134 , _obj(obj)
2135 , _tmp(tmp)
2136 , _exact_klass(exact_klass)
2137 , _current_klass(current_klass)
2138 , _not_null(not_null)
2139 , _no_conflict(no_conflict) { }
2140
2141 LIR_Opr mdp() const { return _mdp; }
2142 LIR_Opr obj() const { return _obj; }
2143 LIR_Opr tmp() const { return _tmp; }
2144 ciKlass* exact_klass() const { return _exact_klass; }
2145 intptr_t current_klass() const { return _current_klass; }
2146 bool not_null() const { return _not_null; }
2147 bool no_conflict() const { return _no_conflict; }
2148
2149 virtual void emit_code(LIR_Assembler* masm);
2150 virtual LIR_OpProfileType* as_OpProfileType() { return this; }
2151 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2152 };
2153
2154 // LIR_OpProfileInlineType
2155 class LIR_OpProfileInlineType : public LIR_Op {
2156 friend class LIR_OpVisitState;
2157
2158 private:
2159 LIR_Opr _mdp;
2160 LIR_Opr _obj;
2161 int _flag;
2162 LIR_Opr _tmp;
2163 bool _not_null; // true if we know statically that _obj cannot be null
2164
2165 public:
2166 // Destroys recv
2167 LIR_OpProfileInlineType(LIR_Opr mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null)
2168 : LIR_Op(lir_profile_inline_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2169 , _mdp(mdp)
2170 , _obj(obj)
2171 , _flag(flag)
2172 , _tmp(tmp)
2173 , _not_null(not_null) { }
2174
2175 LIR_Opr mdp() const { return _mdp; }
2176 LIR_Opr obj() const { return _obj; }
2177 int flag() const { return _flag; }
2178 LIR_Opr tmp() const { return _tmp; }
2179 bool not_null() const { return _not_null; }
2180
2181 virtual void emit_code(LIR_Assembler* masm);
2182 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return this; }
2183 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2184 };
2185
2186 class LIR_InsertionBuffer;
2187
2188 //--------------------------------LIR_List---------------------------------------------------
2189 // Maintains a list of LIR instructions (one instance of LIR_List per basic block)
2190 // The LIR instructions are appended by the LIR_List class itself;
2191 //
2192 // Notes:
2193 // - all offsets are(should be) in bytes
2194 // - local positions are specified with an offset, with offset 0 being local 0
2195
2196 class LIR_List: public CompilationResourceObj {
2197 private:
2198 LIR_OpList _operations;
2199
2200 Compilation* _compilation;
2201 #ifndef PRODUCT
2202 BlockBegin* _block;
2203 #endif
2204 #ifdef ASSERT
2205 const char * _file;
2206 int _line;
2207 #endif
2208 #ifdef RISCV
2209 LIR_Opr _cmp_opr1;
2210 LIR_Opr _cmp_opr2;
2211 #endif
2212
2213 public:
2214 void append(LIR_Op* op) {
2215 if (op->source() == nullptr)
2216 op->set_source(_compilation->current_instruction());
2217 #ifndef PRODUCT
2218 if (PrintIRWithLIR) {
2219 _compilation->maybe_print_current_instruction();
2220 op->print(); tty->cr();
2221 }
2222 #endif // PRODUCT
2223
2224 #ifdef RISCV
2225 set_cmp_oprs(op);
2226 // lir_cmp set cmp oprs only on riscv
2227 if (op->code() == lir_cmp) return;
2228 #endif
2229
2230 _operations.append(op);
2231
2232 #ifdef ASSERT
2233 op->verify();
2234 op->set_file_and_line(_file, _line);
2235 _file = nullptr;
2236 _line = 0;
2237 #endif
2238 }
2239
2240 LIR_List(Compilation* compilation, BlockBegin* block = nullptr);
2241
2242 #ifdef ASSERT
2243 void set_file_and_line(const char * file, int line);
2244 #endif
2245
2246 #ifdef RISCV
2247 void set_cmp_oprs(LIR_Op* op);
2248 #endif
2249
2250 //---------- accessors ---------------
2251 LIR_OpList* instructions_list() { return &_operations; }
2252 int length() const { return _operations.length(); }
2253 LIR_Op* at(int i) const { return _operations.at(i); }
2254
2255 NOT_PRODUCT(BlockBegin* block() const { return _block; });
2256
2257 // insert LIR_Ops in buffer to right places in LIR_List
2258 void append(LIR_InsertionBuffer* buffer);
2259
2260 //---------- mutators ---------------
2261 void insert_before(int i, LIR_List* op_list) { _operations.insert_before(i, op_list->instructions_list()); }
2262 void insert_before(int i, LIR_Op* op) { _operations.insert_before(i, op); }
2263 void remove_at(int i) { _operations.remove_at(i); }
2264
2265 //---------- printing -------------
2266 void print_instructions() PRODUCT_RETURN;
2267
2268
2269 //---------- instructions -------------
2270 void call_opt_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2271 address dest, LIR_OprList* arguments,
2272 CodeEmitInfo* info) {
2273 append(new LIR_OpJavaCall(lir_optvirtual_call, method, receiver, result, dest, arguments, info));
2274 }
2275 void call_static(ciMethod* method, LIR_Opr result,
2276 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2277 append(new LIR_OpJavaCall(lir_static_call, method, LIR_OprFact::illegalOpr, result, dest, arguments, info));
2278 }
2279 void call_icvirtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2280 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2281 append(new LIR_OpJavaCall(lir_icvirtual_call, method, receiver, result, dest, arguments, info));
2282 }
2283 void call_dynamic(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2284 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2285 append(new LIR_OpJavaCall(lir_dynamic_call, method, receiver, result, dest, arguments, info));
2286 }
2287
2288 void get_thread(LIR_Opr result) { append(new LIR_Op0(lir_get_thread, result)); }
2289 void membar() { append(new LIR_Op0(lir_membar)); }
2290 void membar_acquire() { append(new LIR_Op0(lir_membar_acquire)); }
2291 void membar_release() { append(new LIR_Op0(lir_membar_release)); }
2292 void membar_loadload() { append(new LIR_Op0(lir_membar_loadload)); }
2293 void membar_storestore() { append(new LIR_Op0(lir_membar_storestore)); }
2294 void membar_loadstore() { append(new LIR_Op0(lir_membar_loadstore)); }
2295 void membar_storeload() { append(new LIR_Op0(lir_membar_storeload)); }
2296
2297 void nop() { append(new LIR_Op0(lir_nop)); }
2298
2299 void std_entry(LIR_Opr receiver) { append(new LIR_Op0(lir_std_entry, receiver)); }
2300 void osr_entry(LIR_Opr osrPointer) { append(new LIR_Op0(lir_osr_entry, osrPointer)); }
2301
2302 void on_spin_wait() { append(new LIR_Op0(lir_on_spin_wait)); }
2303
2304 void branch_destination(Label* lbl) { append(new LIR_OpLabel(lbl)); }
2305
2306 void leal(LIR_Opr from, LIR_Opr result_reg, LIR_PatchCode patch_code = lir_patch_none, CodeEmitInfo* info = nullptr) { append(new LIR_Op1(lir_leal, from, result_reg, T_ILLEGAL, patch_code, info)); }
2307
2308 // result is a stack location for old backend and vreg for UseLinearScan
2309 // stack_loc_temp is an illegal register for old backend
2310 void move(LIR_Opr src, LIR_Opr dst, CodeEmitInfo* info = nullptr) { append(new LIR_Op1(lir_move, src, dst, dst->type(), lir_patch_none, info)); }
2311 void move(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = nullptr) { append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info)); }
2312 void move(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = nullptr) { append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info)); }
2313 void move_wide(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = nullptr) {
2314 if (UseCompressedOops) {
2315 append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info, lir_move_wide));
2316 } else {
2317 move(src, dst, info);
2318 }
2319 }
2320 void move_wide(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = nullptr) {
2321 if (UseCompressedOops) {
2322 append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info, lir_move_wide));
2323 } else {
2324 move(src, dst, info);
2325 }
2326 }
2327 void volatile_move(LIR_Opr src, LIR_Opr dst, BasicType type, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none) { append(new LIR_Op1(lir_move, src, dst, type, patch_code, info, lir_move_volatile)); }
2328
2329 void oop2reg (jobject o, LIR_Opr reg) { assert(reg->type() == T_OBJECT, "bad reg"); append(new LIR_Op1(lir_move, LIR_OprFact::oopConst(o), reg)); }
2330 void oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info);
2331
2332 void metadata2reg (Metadata* o, LIR_Opr reg) { assert(reg->type() == T_METADATA, "bad reg"); append(new LIR_Op1(lir_move, LIR_OprFact::metadataConst(o), reg)); }
2333 void klass2reg_patch(Metadata* o, LIR_Opr reg, CodeEmitInfo* info);
2334
2335 void safepoint(LIR_Opr tmp, CodeEmitInfo* info) { append(new LIR_Op1(lir_safepoint, tmp, info)); }
2336 void return_op(LIR_Opr result) { append(new LIR_OpReturn(result)); }
2337
2338 void convert(Bytecodes::Code code, LIR_Opr left, LIR_Opr dst, ConversionStub* stub = nullptr/*, bool is_32bit = false*/) { append(new LIR_OpConvert(code, left, dst, stub)); }
2339
2340 void logical_and (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_and, left, right, dst)); }
2341 void logical_or (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_or, left, right, dst)); }
2342 void logical_xor (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_xor, left, right, dst)); }
2343
2344 void null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null = false);
2345 void throw_exception(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2346 append(new LIR_Op2(lir_throw, exceptionPC, exceptionOop, LIR_OprFact::illegalOpr, info));
2347 }
2348 void unwind_exception(LIR_Opr exceptionOop) {
2349 append(new LIR_Op1(lir_unwind, exceptionOop));
2350 }
2351
2352 void push(LIR_Opr opr) { append(new LIR_Op1(lir_push, opr)); }
2353 void pop(LIR_Opr reg) { append(new LIR_Op1(lir_pop, reg)); }
2354
2355 void cmp(LIR_Condition condition, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info = nullptr) {
2356 append(new LIR_Op2(lir_cmp, condition, left, right, info));
2357 }
2358 void cmp(LIR_Condition condition, LIR_Opr left, int right, CodeEmitInfo* info = nullptr) {
2359 cmp(condition, left, LIR_OprFact::intConst(right), info);
2360 }
2361
2362 void cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info);
2363 void cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info);
2364
2365 void cmove(LIR_Condition condition, LIR_Opr src1, LIR_Opr src2, LIR_Opr dst, BasicType type,
2366 LIR_Opr cmp_opr1 = LIR_OprFact::illegalOpr, LIR_Opr cmp_opr2 = LIR_OprFact::illegalOpr) {
2367 append(new LIR_Op4(lir_cmove, condition, src1, src2, cmp_opr1, cmp_opr2, dst, type));
2368 }
2369
2370 void cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2371 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2372 void cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2373 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2374 void cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2375 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2376
2377 void abs (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_abs , from, to, tmp)); }
2378 void negate(LIR_Opr from, LIR_Opr to, LIR_Opr tmp = LIR_OprFact::illegalOpr) { append(new LIR_Op1(lir_neg, from, to, tmp)); }
2379 void sqrt(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_sqrt, from, to, tmp)); }
2380 void fmad(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmad, from, from1, from2, to)); }
2381 void fmaf(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmaf, from, from1, from2, to)); }
2382 void f2hf(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_f2hf, from, to, tmp)); }
2383 void hf2f(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_hf2f, from, to, tmp)); }
2384
2385 void add (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_add, left, right, res)); }
2386 void sub (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_sub, left, right, res, info)); }
2387 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_mul, left, right, res)); }
2388 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_mul, left, right, res, tmp)); }
2389 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_div, left, right, res, info)); }
2390 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_div, left, right, res, tmp)); }
2391 void rem (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_rem, left, right, res, info)); }
2392
2393 void volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2394 void volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2395
2396 void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2397
2398 void store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2399 void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2400 void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2401 void volatile_store_mem_reg(LIR_Opr src, LIR_Address* address, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2402 void volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2403
2404 void idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2405 void idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2406 void irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2407 void irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2408
2409 void allocate_object(LIR_Opr dst, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4, int header_size, int object_size, LIR_Opr klass, bool init_check, CodeStub* stub);
2410 void allocate_array(LIR_Opr dst, LIR_Opr len, LIR_Opr t1,LIR_Opr t2, LIR_Opr t3,LIR_Opr t4, BasicType type, LIR_Opr klass, CodeStub* stub, bool zero_array = true, bool is_null_free = false);
2411
2412 // jump is an unconditional branch
2413 void jump(BlockBegin* block) {
2414 append(new LIR_OpBranch(lir_cond_always, block));
2415 }
2416 void jump(CodeStub* stub) {
2417 append(new LIR_OpBranch(lir_cond_always, stub));
2418 }
2419 void branch(LIR_Condition cond, Label* lbl) {
2420 append(new LIR_OpBranch(cond, lbl));
2421 }
2422 // Should not be used for fp comparisons
2423 void branch(LIR_Condition cond, BlockBegin* block) {
2424 append(new LIR_OpBranch(cond, block));
2425 }
2426 // Should not be used for fp comparisons
2427 void branch(LIR_Condition cond, CodeStub* stub) {
2428 append(new LIR_OpBranch(cond, stub));
2429 }
2430 // Should only be used for fp comparisons
2431 void branch(LIR_Condition cond, BlockBegin* block, BlockBegin* unordered) {
2432 append(new LIR_OpBranch(cond, block, unordered));
2433 }
2434
2435 void shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2436 void shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2437 void unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2438
2439 void shift_left(LIR_Opr value, int count, LIR_Opr dst) { shift_left(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2440 void shift_right(LIR_Opr value, int count, LIR_Opr dst) { shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2441 void unsigned_shift_right(LIR_Opr value, int count, LIR_Opr dst) { unsigned_shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2442
2443 void lcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_cmp_l2i, left, right, dst)); }
2444 void fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less);
2445
2446 void call_runtime_leaf(address routine, LIR_Opr tmp, LIR_Opr result, LIR_OprList* arguments) {
2447 append(new LIR_OpRTCall(routine, tmp, result, arguments));
2448 }
2449
2450 void call_runtime(address routine, LIR_Opr tmp, LIR_Opr result,
2451 LIR_OprList* arguments, CodeEmitInfo* info) {
2452 append(new LIR_OpRTCall(routine, tmp, result, arguments, info));
2453 }
2454
2455 void load_stack_address_monitor(int monitor_ix, LIR_Opr dst) { append(new LIR_Op1(lir_monaddr, LIR_OprFact::intConst(monitor_ix), dst)); }
2456 void unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub);
2457 void lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_ie_stub=nullptr);
2458
2459 void breakpoint() { append(new LIR_Op0(lir_breakpoint)); }
2460
2461 void arraycopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp, ciArrayKlass* expected_type, int flags, CodeEmitInfo* info) { append(new LIR_OpArrayCopy(src, src_pos, dst, dst_pos, length, tmp, expected_type, flags, info)); }
2462
2463 void update_crc32(LIR_Opr crc, LIR_Opr val, LIR_Opr res) { append(new LIR_OpUpdateCRC32(crc, val, res)); }
2464
2465 void instanceof(LIR_Opr result, LIR_Opr object, ciKlass* klass, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check, CodeEmitInfo* info_for_patch, ciMethod* profiled_method, int profiled_bci);
2466 void store_check(LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception, ciMethod* profiled_method, int profiled_bci);
2467 void check_flat_array(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
2468 void check_null_free_array(LIR_Opr array, LIR_Opr tmp);
2469 void substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
2470 LIR_Opr tmp1, LIR_Opr tmp2,
2471 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
2472 CodeEmitInfo* info, CodeStub* stub);
2473
2474 void checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
2475 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
2476 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
2477 ciMethod* profiled_method, int profiled_bci, bool is_null_free);
2478 // MethodData* profiling
2479 void profile_call(ciMethod* method, int bci, ciMethod* callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* cha_klass) {
2480 append(new LIR_OpProfileCall(method, bci, callee, mdo, recv, t1, cha_klass));
2481 }
2482 void profile_type(LIR_Address* mdp, LIR_Opr obj, ciKlass* exact_klass, intptr_t current_klass, LIR_Opr tmp, bool not_null, bool no_conflict) {
2483 append(new LIR_OpProfileType(LIR_OprFact::address(mdp), obj, exact_klass, current_klass, tmp, not_null, no_conflict));
2484 }
2485 void profile_inline_type(LIR_Address* mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null) {
2486 append(new LIR_OpProfileInlineType(LIR_OprFact::address(mdp), obj, flag, tmp, not_null));
2487 }
2488
2489 void xadd(LIR_Opr src, LIR_Opr add, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xadd, src, add, res, tmp)); }
2490 void xchg(LIR_Opr src, LIR_Opr set, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xchg, src, set, res, tmp)); }
2491
2492 void load_klass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info) { append(new LIR_OpLoadKlass(obj, result, info)); }
2493
2494 #ifdef ASSERT
2495 void lir_assert(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, const char* msg, bool halt) { append(new LIR_OpAssert(condition, opr1, opr2, msg, halt)); }
2496 #endif
2497 };
2498
2499 void print_LIR(BlockList* blocks);
2500
2501 class LIR_InsertionBuffer : public CompilationResourceObj {
2502 private:
2503 LIR_List* _lir; // the lir list where ops of this buffer should be inserted later (null when uninitialized)
2504
2505 // list of insertion points. index and count are stored alternately:
2506 // _index_and_count[i * 2]: the index into lir list where "count" ops should be inserted
2507 // _index_and_count[i * 2 + 1]: the number of ops to be inserted at index
2508 intStack _index_and_count;
2509
2510 // the LIR_Ops to be inserted
2511 LIR_OpList _ops;
2512
2513 void append_new(int index, int count) { _index_and_count.append(index); _index_and_count.append(count); }
2514 void set_index_at(int i, int value) { _index_and_count.at_put((i << 1), value); }
2515 void set_count_at(int i, int value) { _index_and_count.at_put((i << 1) + 1, value); }
2516
2517 #ifdef ASSERT
2518 void verify();
2519 #endif
2520 public:
2521 LIR_InsertionBuffer() : _lir(nullptr), _index_and_count(8), _ops(8) { }
2522
2523 // must be called before using the insertion buffer
2524 void init(LIR_List* lir) { assert(!initialized(), "already initialized"); _lir = lir; _index_and_count.clear(); _ops.clear(); }
2525 bool initialized() const { return _lir != nullptr; }
2526 // called automatically when the buffer is appended to the LIR_List
2527 void finish() { _lir = nullptr; }
2528
2529 // accessors
2530 LIR_List* lir_list() const { return _lir; }
2531 int number_of_insertion_points() const { return _index_and_count.length() >> 1; }
2532 int index_at(int i) const { return _index_and_count.at((i << 1)); }
2533 int count_at(int i) const { return _index_and_count.at((i << 1) + 1); }
2534
2535 int number_of_ops() const { return _ops.length(); }
2536 LIR_Op* op_at(int i) const { return _ops.at(i); }
2537
2538 // append an instruction to the buffer
2539 void append(int index, LIR_Op* op);
2540
2541 // instruction
2542 void move(int index, LIR_Opr src, LIR_Opr dst, CodeEmitInfo* info = nullptr) { append(index, new LIR_Op1(lir_move, src, dst, dst->type(), lir_patch_none, info)); }
2543 };
2544
2545
2546 //
2547 // LIR_OpVisitState is used for manipulating LIR_Ops in an abstract way.
2548 // Calling a LIR_Op's visit function with a LIR_OpVisitState causes
2549 // information about the input, output and temporaries used by the
2550 // op to be recorded. It also records whether the op has call semantics
2551 // and also records all the CodeEmitInfos used by this op.
2552 //
2553
2554
2555 class LIR_OpVisitState: public StackObj {
2556 public:
2557 typedef enum { inputMode, firstMode = inputMode, tempMode, outputMode, numModes, invalidMode = -1 } OprMode;
2558
2559 enum {
2560 maxNumberOfOperands = 21,
2561 maxNumberOfInfos = 4
2562 };
2563
2564 private:
2565 LIR_Op* _op;
2566
2567 // optimization: the operands and infos are not stored in a variable-length
2568 // list, but in a fixed-size array to save time of size checks and resizing
2569 int _oprs_len[numModes];
2570 LIR_Opr* _oprs_new[numModes][maxNumberOfOperands];
2571 int _info_len;
2572 CodeEmitInfo* _info_new[maxNumberOfInfos];
2573
2574 bool _has_call;
2575 bool _has_slow_case;
2576
2577
2578 // only include register operands
2579 // addresses are decomposed to the base and index registers
2580 // constants and stack operands are ignored
2581 void append(LIR_Opr& opr, OprMode mode) {
2582 assert(opr->is_valid(), "should not call this otherwise");
2583 assert(mode >= 0 && mode < numModes, "bad mode");
2584
2585 if (opr->is_register()) {
2586 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2587 _oprs_new[mode][_oprs_len[mode]++] = &opr;
2588
2589 } else if (opr->is_pointer()) {
2590 LIR_Address* address = opr->as_address_ptr();
2591 if (address != nullptr) {
2592 // special handling for addresses: add base and index register of the address
2593 // both are always input operands or temp if we want to extend
2594 // their liveness!
2595 if (mode == outputMode) {
2596 mode = inputMode;
2597 }
2598 assert (mode == inputMode || mode == tempMode, "input or temp only for addresses");
2599 if (address->_base->is_valid()) {
2600 assert(address->_base->is_register(), "must be");
2601 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2602 _oprs_new[mode][_oprs_len[mode]++] = &address->_base;
2603 }
2604 if (address->_index->is_valid()) {
2605 assert(address->_index->is_register(), "must be");
2606 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2607 _oprs_new[mode][_oprs_len[mode]++] = &address->_index;
2608 }
2609
2610 } else {
2611 assert(opr->is_constant(), "constant operands are not processed");
2612 }
2613 } else {
2614 assert(opr->is_stack(), "stack operands are not processed");
2615 }
2616 }
2617
2618 void append(CodeEmitInfo* info) {
2619 assert(info != nullptr, "should not call this otherwise");
2620 assert(_info_len < maxNumberOfInfos, "array overflow");
2621 _info_new[_info_len++] = info;
2622 }
2623
2624 public:
2625 LIR_OpVisitState() { reset(); }
2626
2627 LIR_Op* op() const { return _op; }
2628 void set_op(LIR_Op* op) { reset(); _op = op; }
2629
2630 bool has_call() const { return _has_call; }
2631 bool has_slow_case() const { return _has_slow_case; }
2632
2633 void reset() {
2634 _op = nullptr;
2635 _has_call = false;
2636 _has_slow_case = false;
2637
2638 _oprs_len[inputMode] = 0;
2639 _oprs_len[tempMode] = 0;
2640 _oprs_len[outputMode] = 0;
2641 _info_len = 0;
2642 }
2643
2644
2645 int opr_count(OprMode mode) const {
2646 assert(mode >= 0 && mode < numModes, "bad mode");
2647 return _oprs_len[mode];
2648 }
2649
2650 LIR_Opr opr_at(OprMode mode, int index) const {
2651 assert(mode >= 0 && mode < numModes, "bad mode");
2652 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2653 return *_oprs_new[mode][index];
2654 }
2655
2656 void set_opr_at(OprMode mode, int index, LIR_Opr opr) const {
2657 assert(mode >= 0 && mode < numModes, "bad mode");
2658 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2659 *_oprs_new[mode][index] = opr;
2660 }
2661
2662 int info_count() const {
2663 return _info_len;
2664 }
2665
2666 CodeEmitInfo* info_at(int index) const {
2667 assert(index < _info_len, "index out of bounds");
2668 return _info_new[index];
2669 }
2670
2671 XHandlers* all_xhandler();
2672
2673 // collects all register operands of the instruction
2674 void visit(LIR_Op* op);
2675
2676 #ifdef ASSERT
2677 // check that an operation has no operands
2678 bool no_operands(LIR_Op* op);
2679 #endif
2680
2681 // LIR_Op visitor functions use these to fill in the state
2682 void do_input(LIR_Opr& opr) { append(opr, LIR_OpVisitState::inputMode); }
2683 void do_output(LIR_Opr& opr) { append(opr, LIR_OpVisitState::outputMode); }
2684 void do_temp(LIR_Opr& opr) { append(opr, LIR_OpVisitState::tempMode); }
2685 void do_info(CodeEmitInfo* info) { append(info); }
2686
2687 void do_stub(CodeStub* stub);
2688 void do_call() { _has_call = true; }
2689 void do_slow_case() { _has_slow_case = true; }
2690 void do_slow_case(CodeEmitInfo* info) {
2691 _has_slow_case = true;
2692 append(info);
2693 }
2694 };
2695
2696
2697 inline LIR_Opr LIR_Opr::illegalOpr() { return LIR_OprFact::illegalOpr; };
2698
2699 inline LIR_Opr LIR_Opr::nullOpr() { return LIR_OprFact::nullOpr; };
2700
2701 #endif // SHARE_C1_C1_LIR_HPP