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_Op3;
883 class LIR_OpAllocArray;
884 class LIR_Op4;
885 class LIR_OpCall;
886 class LIR_OpJavaCall;
887 class LIR_OpRTCall;
888 class LIR_OpArrayCopy;
889 class LIR_OpUpdateCRC32;
890 class LIR_OpLock;
891 class LIR_OpTypeCheck;
892 class LIR_OpFlattenedArrayCheck;
893 class LIR_OpNullFreeArrayCheck;
894 class LIR_OpSubstitutabilityCheck;
895 class LIR_OpCompareAndSwap;
896 class LIR_OpLoadKlass;
897 class LIR_OpProfileCall;
898 class LIR_OpProfileType;
899 class LIR_OpProfileInlineType;
900 #ifdef ASSERT
901 class LIR_OpAssert;
902 #endif
903
904 // LIR operation codes
905 enum LIR_Code {
906 lir_none
907 , begin_op0
908 , lir_label
909 , lir_nop
910 , lir_std_entry
911 , lir_osr_entry
912 , lir_breakpoint
913 , lir_rtcall
914 , lir_membar
915 , lir_membar_acquire
916 , lir_membar_release
917 , lir_membar_loadload
918 , lir_membar_storestore
919 , lir_membar_loadstore
920 , lir_membar_storeload
921 , lir_get_thread
922 , lir_on_spin_wait
923 , lir_check_orig_pc
924 , end_op0
925 , begin_op1
926 , lir_push
927 , lir_pop
928 , lir_null_check
929 , lir_return
930 , lir_leal
931 , lir_move
932 , lir_convert
933 , lir_alloc_object
934 , lir_monaddr
935 , lir_sqrt
936 , lir_abs
937 , lir_neg
938 , lir_f2hf
939 , lir_hf2f
940 , lir_safepoint
941 , lir_unwind
942 , lir_load_klass
943 , end_op1
944 , begin_op2
945 , lir_branch
946 , lir_cond_float_branch
947 , lir_cmp
948 , lir_cmp_l2i
949 , lir_ucmp_fd2i
950 , lir_cmp_fd2i
951 , lir_add
952 , lir_sub
953 , lir_mul
954 , lir_div
955 , lir_rem
956 , lir_logic_and
957 , lir_logic_or
958 , lir_logic_xor
959 , lir_shl
960 , lir_shr
961 , lir_ushr
962 , lir_alloc_array
963 , lir_throw
964 , lir_xadd
965 , lir_xchg
966 , end_op2
967 , begin_op3
968 , lir_idiv
969 , lir_irem
970 , lir_fmad
971 , lir_fmaf
972 , end_op3
973 , begin_op4
974 , lir_cmove
975 , end_op4
976 , begin_opJavaCall
977 , lir_static_call
978 , lir_optvirtual_call
979 , lir_icvirtual_call
980 , lir_dynamic_call
981 , end_opJavaCall
982 , begin_opArrayCopy
983 , lir_arraycopy
984 , end_opArrayCopy
985 , begin_opUpdateCRC32
986 , lir_updatecrc32
987 , end_opUpdateCRC32
988 , begin_opLock
989 , lir_lock
990 , lir_unlock
991 , end_opLock
992 , begin_opTypeCheck
993 , lir_instanceof
994 , lir_checkcast
995 , lir_store_check
996 , end_opTypeCheck
997 , begin_opFlattenedArrayCheck
998 , lir_flat_array_check
999 , end_opFlattenedArrayCheck
1000 , begin_opNullFreeArrayCheck
1001 , lir_null_free_array_check
1002 , end_opNullFreeArrayCheck
1003 , begin_opSubstitutabilityCheck
1004 , lir_substitutability_check
1005 , end_opSubstitutabilityCheck
1006 , begin_opCompareAndSwap
1007 , lir_cas_long
1008 , lir_cas_obj
1009 , lir_cas_int
1010 , end_opCompareAndSwap
1011 , begin_opMDOProfile
1012 , lir_profile_call
1013 , lir_profile_type
1014 , lir_profile_inline_type
1015 , end_opMDOProfile
1016 , begin_opAssert
1017 , lir_assert
1018 , end_opAssert
1019 #if INCLUDE_ZGC
1020 , begin_opXLoadBarrierTest
1021 , lir_xloadbarrier_test
1022 , end_opXLoadBarrierTest
1023 #endif
1024 };
1025
1026
1027 enum LIR_Condition {
1028 lir_cond_equal
1029 , lir_cond_notEqual
1030 , lir_cond_less
1031 , lir_cond_lessEqual
1032 , lir_cond_greaterEqual
1033 , lir_cond_greater
1034 , lir_cond_belowEqual
1035 , lir_cond_aboveEqual
1036 , lir_cond_always
1037 , lir_cond_unknown = -1
1038 };
1039
1040
1041 enum LIR_PatchCode {
1042 lir_patch_none,
1043 lir_patch_low,
1044 lir_patch_high,
1045 lir_patch_normal
1046 };
1047
1048
1049 enum LIR_MoveKind {
1050 lir_move_normal,
1051 lir_move_volatile,
1052 lir_move_wide,
1053 lir_move_max_flag
1054 };
1055
1056
1057 // --------------------------------------------------
1058 // LIR_Op
1059 // --------------------------------------------------
1060 class LIR_Op: public CompilationResourceObj {
1061 friend class LIR_OpVisitState;
1062
1063 #ifdef ASSERT
1064 private:
1065 const char * _file;
1066 int _line;
1067 #endif
1068
1069 protected:
1070 LIR_Opr _result;
1071 unsigned short _code;
1072 unsigned short _flags;
1073 CodeEmitInfo* _info;
1074 int _id; // value id for register allocation
1075 Instruction* _source; // for debugging
1076
1077 static void print_condition(outputStream* out, LIR_Condition cond) PRODUCT_RETURN;
1078
1079 protected:
1080 static bool is_in_range(LIR_Code test, LIR_Code start, LIR_Code end) { return start < test && test < end; }
1081
1082 public:
1083 LIR_Op()
1084 :
1085 #ifdef ASSERT
1086 _file(nullptr)
1087 , _line(0),
1088 #endif
1089 _result(LIR_OprFact::illegalOpr)
1090 , _code(lir_none)
1091 , _flags(0)
1092 , _info(nullptr)
1093 , _id(-1)
1094 , _source(nullptr) {}
1095
1096 LIR_Op(LIR_Code code, LIR_Opr result, CodeEmitInfo* info)
1097 :
1098 #ifdef ASSERT
1099 _file(nullptr)
1100 , _line(0),
1101 #endif
1102 _result(result)
1103 , _code(code)
1104 , _flags(0)
1105 , _info(info)
1106 , _id(-1)
1107 , _source(nullptr) {}
1108
1109 CodeEmitInfo* info() const { return _info; }
1110 LIR_Code code() const { return (LIR_Code)_code; }
1111 LIR_Opr result_opr() const { return _result; }
1112 void set_result_opr(LIR_Opr opr) { _result = opr; }
1113
1114 #ifdef ASSERT
1115 void set_file_and_line(const char * file, int line) {
1116 _file = file;
1117 _line = line;
1118 }
1119 #endif
1120
1121 virtual const char * name() const PRODUCT_RETURN_NULL;
1122 virtual void visit(LIR_OpVisitState* state);
1123
1124 int id() const { return _id; }
1125 void set_id(int id) { _id = id; }
1126
1127 Instruction* source() const { return _source; }
1128 void set_source(Instruction* ins) { _source = ins; }
1129
1130 virtual void emit_code(LIR_Assembler* masm) = 0;
1131 virtual void print_instr(outputStream* out) const = 0;
1132 virtual void print_on(outputStream* st) const PRODUCT_RETURN;
1133
1134 virtual bool is_patching() { return false; }
1135 virtual LIR_OpCall* as_OpCall() { return nullptr; }
1136 virtual LIR_OpJavaCall* as_OpJavaCall() { return nullptr; }
1137 virtual LIR_OpLabel* as_OpLabel() { return nullptr; }
1138 virtual LIR_OpLock* as_OpLock() { return nullptr; }
1139 virtual LIR_OpAllocArray* as_OpAllocArray() { return nullptr; }
1140 virtual LIR_OpAllocObj* as_OpAllocObj() { return nullptr; }
1141 virtual LIR_OpBranch* as_OpBranch() { return nullptr; }
1142 virtual LIR_OpReturn* as_OpReturn() { return nullptr; }
1143 virtual LIR_OpRTCall* as_OpRTCall() { return nullptr; }
1144 virtual LIR_OpConvert* as_OpConvert() { return nullptr; }
1145 virtual LIR_Op0* as_Op0() { return nullptr; }
1146 virtual LIR_Op1* as_Op1() { return nullptr; }
1147 virtual LIR_Op2* as_Op2() { return nullptr; }
1148 virtual LIR_Op3* as_Op3() { return nullptr; }
1149 virtual LIR_Op4* as_Op4() { return nullptr; }
1150 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return nullptr; }
1151 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return nullptr; }
1152 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return nullptr; }
1153 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return nullptr; }
1154 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return nullptr; }
1155 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return nullptr; }
1156 virtual LIR_OpCompareAndSwap* as_OpCompareAndSwap() { return nullptr; }
1157 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return nullptr; }
1158 virtual LIR_OpProfileCall* as_OpProfileCall() { return nullptr; }
1159 virtual LIR_OpProfileType* as_OpProfileType() { return nullptr; }
1160 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return nullptr; }
1161 #ifdef ASSERT
1162 virtual LIR_OpAssert* as_OpAssert() { return nullptr; }
1163 #endif
1164
1165 virtual void verify() const {}
1166 };
1167
1168 // for calls
1169 class LIR_OpCall: public LIR_Op {
1170 friend class LIR_OpVisitState;
1171
1172 protected:
1173 address _addr;
1174 LIR_OprList* _arguments;
1175 protected:
1176 LIR_OpCall(LIR_Code code, address addr, LIR_Opr result,
1177 LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1178 : LIR_Op(code, result, info)
1179 , _addr(addr)
1180 , _arguments(arguments) {}
1181
1182 public:
1183 address addr() const { return _addr; }
1184 const LIR_OprList* arguments() const { return _arguments; }
1185 virtual LIR_OpCall* as_OpCall() { return this; }
1186 };
1187
1188
1189 // --------------------------------------------------
1190 // LIR_OpJavaCall
1191 // --------------------------------------------------
1192 class LIR_OpJavaCall: public LIR_OpCall {
1193 friend class LIR_OpVisitState;
1194
1195 private:
1196 ciMethod* _method;
1197 LIR_Opr _receiver;
1198
1199 public:
1200 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1201 LIR_Opr receiver, LIR_Opr result,
1202 address addr, LIR_OprList* arguments,
1203 CodeEmitInfo* info)
1204 : LIR_OpCall(code, addr, result, arguments, info)
1205 , _method(method)
1206 , _receiver(receiver)
1207 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1208
1209 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1210 LIR_Opr receiver, LIR_Opr result, intptr_t vtable_offset,
1211 LIR_OprList* arguments, CodeEmitInfo* info)
1212 : LIR_OpCall(code, (address)vtable_offset, result, arguments, info)
1213 , _method(method)
1214 , _receiver(receiver)
1215 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1216
1217 LIR_Opr receiver() const { return _receiver; }
1218 ciMethod* method() const { return _method; }
1219
1220 // JSR 292 support.
1221 bool is_invokedynamic() const { return code() == lir_dynamic_call; }
1222 bool is_method_handle_invoke() const {
1223 return method()->is_compiled_lambda_form() || // Java-generated lambda form
1224 method()->is_method_handle_intrinsic(); // JVM-generated MH intrinsic
1225 }
1226
1227 virtual void emit_code(LIR_Assembler* masm);
1228 virtual LIR_OpJavaCall* as_OpJavaCall() { return this; }
1229 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1230
1231 bool maybe_return_as_fields(ciInlineKlass** vk = nullptr) const;
1232 };
1233
1234 // --------------------------------------------------
1235 // LIR_OpLabel
1236 // --------------------------------------------------
1237 // Location where a branch can continue
1238 class LIR_OpLabel: public LIR_Op {
1239 friend class LIR_OpVisitState;
1240
1241 private:
1242 Label* _label;
1243 public:
1244 LIR_OpLabel(Label* lbl)
1245 : LIR_Op(lir_label, LIR_OprFact::illegalOpr, nullptr)
1246 , _label(lbl) {}
1247 Label* label() const { return _label; }
1248
1249 virtual void emit_code(LIR_Assembler* masm);
1250 virtual LIR_OpLabel* as_OpLabel() { return this; }
1251 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1252 };
1253
1254 // LIR_OpArrayCopy
1255 class LIR_OpArrayCopy: public LIR_Op {
1256 friend class LIR_OpVisitState;
1257
1258 private:
1259 ArrayCopyStub* _stub;
1260 LIR_Opr _src;
1261 LIR_Opr _src_pos;
1262 LIR_Opr _dst;
1263 LIR_Opr _dst_pos;
1264 LIR_Opr _length;
1265 LIR_Opr _tmp;
1266 ciArrayKlass* _expected_type;
1267 int _flags;
1268
1269 public:
1270 enum Flags {
1271 src_null_check = 1 << 0,
1272 dst_null_check = 1 << 1,
1273 src_pos_positive_check = 1 << 2,
1274 dst_pos_positive_check = 1 << 3,
1275 length_positive_check = 1 << 4,
1276 src_range_check = 1 << 5,
1277 dst_range_check = 1 << 6,
1278 type_check = 1 << 7,
1279 overlapping = 1 << 8,
1280 unaligned = 1 << 9,
1281 src_objarray = 1 << 10,
1282 dst_objarray = 1 << 11,
1283 always_slow_path = 1 << 12,
1284 src_inlinetype_check = 1 << 13,
1285 dst_inlinetype_check = 1 << 14,
1286 all_flags = (1 << 15) - 1
1287 };
1288
1289 LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp,
1290 ciArrayKlass* expected_type, int flags, CodeEmitInfo* info);
1291
1292 LIR_Opr src() const { return _src; }
1293 LIR_Opr src_pos() const { return _src_pos; }
1294 LIR_Opr dst() const { return _dst; }
1295 LIR_Opr dst_pos() const { return _dst_pos; }
1296 LIR_Opr length() const { return _length; }
1297 LIR_Opr tmp() const { return _tmp; }
1298 int flags() const { return _flags; }
1299 ciArrayKlass* expected_type() const { return _expected_type; }
1300 ArrayCopyStub* stub() const { return _stub; }
1301 static int get_initial_copy_flags() { return LIR_OpArrayCopy::unaligned |
1302 LIR_OpArrayCopy::overlapping; }
1303
1304 virtual void emit_code(LIR_Assembler* masm);
1305 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return this; }
1306 void print_instr(outputStream* out) const PRODUCT_RETURN;
1307 };
1308
1309 // LIR_OpUpdateCRC32
1310 class LIR_OpUpdateCRC32: public LIR_Op {
1311 friend class LIR_OpVisitState;
1312
1313 private:
1314 LIR_Opr _crc;
1315 LIR_Opr _val;
1316
1317 public:
1318
1319 LIR_OpUpdateCRC32(LIR_Opr crc, LIR_Opr val, LIR_Opr res);
1320
1321 LIR_Opr crc() const { return _crc; }
1322 LIR_Opr val() const { return _val; }
1323
1324 virtual void emit_code(LIR_Assembler* masm);
1325 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return this; }
1326 void print_instr(outputStream* out) const PRODUCT_RETURN;
1327 };
1328
1329 // --------------------------------------------------
1330 // LIR_Op0
1331 // --------------------------------------------------
1332 class LIR_Op0: public LIR_Op {
1333 friend class LIR_OpVisitState;
1334
1335 public:
1336 LIR_Op0(LIR_Code code)
1337 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1338 LIR_Op0(LIR_Code code, LIR_Opr result, CodeEmitInfo* info = nullptr)
1339 : LIR_Op(code, result, info) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1340
1341 virtual void emit_code(LIR_Assembler* masm);
1342 virtual LIR_Op0* as_Op0() { return this; }
1343 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1344 };
1345
1346
1347 // --------------------------------------------------
1348 // LIR_Op1
1349 // --------------------------------------------------
1350
1351 class LIR_Op1: public LIR_Op {
1352 friend class LIR_OpVisitState;
1353
1354 protected:
1355 LIR_Opr _opr; // input operand
1356 LIR_Opr _tmp;
1357 BasicType _type; // Operand types
1358 LIR_PatchCode _patch; // only required with patchin (NEEDS_CLEANUP: do we want a special instruction for patching?)
1359
1360 static void print_patch_code(outputStream* out, LIR_PatchCode code);
1361
1362 void set_kind(LIR_MoveKind kind) {
1363 assert(code() == lir_move, "must be");
1364 _flags = kind;
1365 }
1366
1367 public:
1368 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)
1369 : LIR_Op(code, result, info)
1370 , _opr(opr)
1371 , _tmp(LIR_OprFact::illegalOpr)
1372 , _type(type)
1373 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1374
1375 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)
1376 : LIR_Op(code, result, info)
1377 , _opr(opr)
1378 , _tmp(tmp)
1379 , _type(type)
1380 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1381
1382 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, BasicType type, LIR_PatchCode patch, CodeEmitInfo* info, LIR_MoveKind kind)
1383 : LIR_Op(code, result, info)
1384 , _opr(opr)
1385 , _tmp(LIR_OprFact::illegalOpr)
1386 , _type(type)
1387 , _patch(patch) {
1388 assert(code == lir_move, "must be");
1389 set_kind(kind);
1390 }
1391
1392 LIR_Op1(LIR_Code code, LIR_Opr opr, CodeEmitInfo* info)
1393 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1394 , _opr(opr)
1395 , _tmp(LIR_OprFact::illegalOpr)
1396 , _type(T_ILLEGAL)
1397 , _patch(lir_patch_none) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1398
1399 LIR_Opr in_opr() const { return _opr; }
1400 LIR_Opr tmp_opr() const { return _tmp; }
1401 LIR_PatchCode patch_code() const { return _patch; }
1402 BasicType type() const { return _type; }
1403
1404 LIR_MoveKind move_kind() const {
1405 assert(code() == lir_move, "must be");
1406 return (LIR_MoveKind)_flags;
1407 }
1408
1409 virtual bool is_patching() { return _patch != lir_patch_none; }
1410 virtual void emit_code(LIR_Assembler* masm);
1411 virtual LIR_Op1* as_Op1() { return this; }
1412 virtual const char * name() const PRODUCT_RETURN_NULL;
1413
1414 void set_in_opr(LIR_Opr opr) { _opr = opr; }
1415
1416 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1417 virtual void verify() const;
1418 };
1419
1420
1421 // for runtime calls
1422 class LIR_OpRTCall: public LIR_OpCall {
1423 friend class LIR_OpVisitState;
1424
1425 private:
1426 LIR_Opr _tmp;
1427 public:
1428 LIR_OpRTCall(address addr, LIR_Opr tmp,
1429 LIR_Opr result, LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1430 : LIR_OpCall(lir_rtcall, addr, result, arguments, info)
1431 , _tmp(tmp) {}
1432
1433 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1434 virtual void emit_code(LIR_Assembler* masm);
1435 virtual LIR_OpRTCall* as_OpRTCall() { return this; }
1436
1437 LIR_Opr tmp() const { return _tmp; }
1438
1439 virtual void verify() const;
1440 };
1441
1442
1443
1444 class LIR_OpReturn: public LIR_Op1 {
1445 friend class LIR_OpVisitState;
1446
1447 private:
1448 C1SafepointPollStub* _stub;
1449
1450 public:
1451 LIR_OpReturn(LIR_Opr opr);
1452
1453 C1SafepointPollStub* stub() const { return _stub; }
1454 virtual LIR_OpReturn* as_OpReturn() { return this; }
1455 };
1456
1457 class LIR_OpConvert: public LIR_Op1 {
1458 friend class LIR_OpVisitState;
1459
1460 private:
1461 Bytecodes::Code _bytecode;
1462
1463 public:
1464 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result)
1465 : LIR_Op1(lir_convert, opr, result)
1466 , _bytecode(code) {}
1467
1468 Bytecodes::Code bytecode() const { return _bytecode; }
1469
1470 virtual void emit_code(LIR_Assembler* masm);
1471 virtual LIR_OpConvert* as_OpConvert() { return this; }
1472 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1473
1474 static void print_bytecode(outputStream* out, Bytecodes::Code code) PRODUCT_RETURN;
1475 };
1476
1477
1478 // LIR_OpAllocObj
1479 class LIR_OpAllocObj : public LIR_Op1 {
1480 friend class LIR_OpVisitState;
1481
1482 private:
1483 LIR_Opr _tmp1;
1484 LIR_Opr _tmp2;
1485 LIR_Opr _tmp3;
1486 LIR_Opr _tmp4;
1487 int _hdr_size;
1488 int _obj_size;
1489 CodeStub* _stub;
1490 bool _init_check;
1491
1492 public:
1493 LIR_OpAllocObj(LIR_Opr klass, LIR_Opr result,
1494 LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1495 int hdr_size, int obj_size, bool init_check, CodeStub* stub)
1496 : LIR_Op1(lir_alloc_object, klass, result)
1497 , _tmp1(t1)
1498 , _tmp2(t2)
1499 , _tmp3(t3)
1500 , _tmp4(t4)
1501 , _hdr_size(hdr_size)
1502 , _obj_size(obj_size)
1503 , _stub(stub)
1504 , _init_check(init_check) { }
1505
1506 LIR_Opr klass() const { return in_opr(); }
1507 LIR_Opr obj() const { return result_opr(); }
1508 LIR_Opr tmp1() const { return _tmp1; }
1509 LIR_Opr tmp2() const { return _tmp2; }
1510 LIR_Opr tmp3() const { return _tmp3; }
1511 LIR_Opr tmp4() const { return _tmp4; }
1512 int header_size() const { return _hdr_size; }
1513 int object_size() const { return _obj_size; }
1514 bool init_check() const { return _init_check; }
1515 CodeStub* stub() const { return _stub; }
1516
1517 virtual void emit_code(LIR_Assembler* masm);
1518 virtual LIR_OpAllocObj * as_OpAllocObj () { return this; }
1519 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1520 };
1521
1522
1523 // LIR_OpTypeCheck
1524 class LIR_OpTypeCheck: public LIR_Op {
1525 friend class LIR_OpVisitState;
1526
1527 private:
1528 LIR_Opr _object;
1529 LIR_Opr _array;
1530 ciKlass* _klass;
1531 LIR_Opr _tmp1;
1532 LIR_Opr _tmp2;
1533 LIR_Opr _tmp3;
1534 CodeEmitInfo* _info_for_patch;
1535 CodeEmitInfo* _info_for_exception;
1536 CodeStub* _stub;
1537 ciMethod* _profiled_method;
1538 int _profiled_bci;
1539 bool _should_profile;
1540 bool _fast_check;
1541 bool _need_null_check;
1542
1543 public:
1544 LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
1545 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1546 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub, bool need_null_check = true);
1547 LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array,
1548 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception);
1549
1550 LIR_Opr object() const { return _object; }
1551 LIR_Opr array() const { assert(code() == lir_store_check, "not valid"); return _array; }
1552 LIR_Opr tmp1() const { return _tmp1; }
1553 LIR_Opr tmp2() const { return _tmp2; }
1554 LIR_Opr tmp3() const { return _tmp3; }
1555 ciKlass* klass() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _klass; }
1556 bool fast_check() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _fast_check; }
1557 CodeEmitInfo* info_for_patch() const { return _info_for_patch; }
1558 CodeEmitInfo* info_for_exception() const { return _info_for_exception; }
1559 CodeStub* stub() const { return _stub; }
1560
1561 // MethodData* profiling
1562 void set_profiled_method(ciMethod *method) { _profiled_method = method; }
1563 void set_profiled_bci(int bci) { _profiled_bci = bci; }
1564 void set_should_profile(bool b) { _should_profile = b; }
1565 ciMethod* profiled_method() const { return _profiled_method; }
1566 int profiled_bci() const { return _profiled_bci; }
1567 bool should_profile() const { return _should_profile; }
1568 bool need_null_check() const { return _need_null_check; }
1569 virtual bool is_patching() { return _info_for_patch != nullptr; }
1570 virtual void emit_code(LIR_Assembler* masm);
1571 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return this; }
1572 void print_instr(outputStream* out) const PRODUCT_RETURN;
1573 };
1574
1575 // LIR_OpFlattenedArrayCheck
1576 class LIR_OpFlattenedArrayCheck: public LIR_Op {
1577 friend class LIR_OpVisitState;
1578
1579 private:
1580 LIR_Opr _array;
1581 LIR_Opr _value;
1582 LIR_Opr _tmp;
1583 CodeStub* _stub;
1584 public:
1585 LIR_OpFlattenedArrayCheck(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
1586 LIR_Opr array() const { return _array; }
1587 LIR_Opr value() const { return _value; }
1588 LIR_Opr tmp() const { return _tmp; }
1589 CodeStub* stub() const { return _stub; }
1590
1591 virtual void emit_code(LIR_Assembler* masm);
1592 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return this; }
1593 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1594 };
1595
1596 // LIR_OpNullFreeArrayCheck
1597 class LIR_OpNullFreeArrayCheck: public LIR_Op {
1598 friend class LIR_OpVisitState;
1599
1600 private:
1601 LIR_Opr _array;
1602 LIR_Opr _tmp;
1603 public:
1604 LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp);
1605 LIR_Opr array() const { return _array; }
1606 LIR_Opr tmp() const { return _tmp; }
1607
1608 virtual void emit_code(LIR_Assembler* masm);
1609 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return this; }
1610 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1611 };
1612
1613 class LIR_OpSubstitutabilityCheck: public LIR_Op {
1614 friend class LIR_OpVisitState;
1615
1616 private:
1617 LIR_Opr _left;
1618 LIR_Opr _right;
1619 LIR_Opr _equal_result;
1620 LIR_Opr _not_equal_result;
1621 LIR_Opr _tmp1;
1622 LIR_Opr _tmp2;
1623 ciKlass* _left_klass;
1624 ciKlass* _right_klass;
1625 LIR_Opr _left_klass_op;
1626 LIR_Opr _right_klass_op;
1627 CodeStub* _stub;
1628 public:
1629 LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
1630 LIR_Opr tmp1, LIR_Opr tmp2,
1631 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
1632 CodeEmitInfo* info, CodeStub* stub);
1633
1634 LIR_Opr left() const { return _left; }
1635 LIR_Opr right() const { return _right; }
1636 LIR_Opr equal_result() const { return _equal_result; }
1637 LIR_Opr not_equal_result() const { return _not_equal_result; }
1638 LIR_Opr tmp1() const { return _tmp1; }
1639 LIR_Opr tmp2() const { return _tmp2; }
1640 ciKlass* left_klass() const { return _left_klass; }
1641 ciKlass* right_klass() const { return _right_klass; }
1642 LIR_Opr left_klass_op() const { return _left_klass_op; }
1643 LIR_Opr right_klass_op() const { return _right_klass_op; }
1644 CodeStub* stub() const { return _stub; }
1645
1646 virtual void emit_code(LIR_Assembler* masm);
1647 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return this; }
1648 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1649 };
1650
1651 // LIR_Op2
1652 class LIR_Op2: public LIR_Op {
1653 friend class LIR_OpVisitState;
1654
1655 protected:
1656 LIR_Opr _opr1;
1657 LIR_Opr _opr2;
1658 LIR_Opr _tmp1;
1659 LIR_Opr _tmp2;
1660 LIR_Opr _tmp3;
1661 LIR_Opr _tmp4;
1662 LIR_Opr _tmp5;
1663 LIR_Condition _condition;
1664 BasicType _type;
1665
1666 void verify() const;
1667
1668 public:
1669 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1670 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1671 , _opr1(opr1)
1672 , _opr2(opr2)
1673 , _tmp1(LIR_OprFact::illegalOpr)
1674 , _tmp2(LIR_OprFact::illegalOpr)
1675 , _tmp3(LIR_OprFact::illegalOpr)
1676 , _tmp4(LIR_OprFact::illegalOpr)
1677 , _tmp5(LIR_OprFact::illegalOpr)
1678 , _condition(condition)
1679 , _type(type) {
1680 assert(code == lir_cmp || code == lir_branch || code == lir_cond_float_branch || code == lir_assert, "code check");
1681 }
1682
1683 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type)
1684 : LIR_Op(code, result, nullptr)
1685 , _opr1(opr1)
1686 , _opr2(opr2)
1687 , _tmp1(LIR_OprFact::illegalOpr)
1688 , _tmp2(LIR_OprFact::illegalOpr)
1689 , _tmp3(LIR_OprFact::illegalOpr)
1690 , _tmp4(LIR_OprFact::illegalOpr)
1691 , _tmp5(LIR_OprFact::illegalOpr)
1692 , _condition(condition)
1693 , _type(type) {
1694 assert(code == lir_cmove, "code check");
1695 assert(type != T_ILLEGAL, "cmove should have type");
1696 }
1697
1698 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result = LIR_OprFact::illegalOpr,
1699 CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1700 : LIR_Op(code, result, info)
1701 , _opr1(opr1)
1702 , _opr2(opr2)
1703 , _tmp1(LIR_OprFact::illegalOpr)
1704 , _tmp2(LIR_OprFact::illegalOpr)
1705 , _tmp3(LIR_OprFact::illegalOpr)
1706 , _tmp4(LIR_OprFact::illegalOpr)
1707 , _tmp5(LIR_OprFact::illegalOpr)
1708 , _condition(lir_cond_unknown)
1709 , _type(type) {
1710 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1711 }
1712
1713 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, LIR_Opr tmp1, LIR_Opr tmp2 = LIR_OprFact::illegalOpr,
1714 LIR_Opr tmp3 = LIR_OprFact::illegalOpr, LIR_Opr tmp4 = LIR_OprFact::illegalOpr, LIR_Opr tmp5 = LIR_OprFact::illegalOpr)
1715 : LIR_Op(code, result, nullptr)
1716 , _opr1(opr1)
1717 , _opr2(opr2)
1718 , _tmp1(tmp1)
1719 , _tmp2(tmp2)
1720 , _tmp3(tmp3)
1721 , _tmp4(tmp4)
1722 , _tmp5(tmp5)
1723 , _condition(lir_cond_unknown)
1724 , _type(T_ILLEGAL) {
1725 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1726 }
1727
1728 LIR_Opr in_opr1() const { return _opr1; }
1729 LIR_Opr in_opr2() const { return _opr2; }
1730 BasicType type() const { return _type; }
1731 LIR_Opr tmp1_opr() const { return _tmp1; }
1732 LIR_Opr tmp2_opr() const { return _tmp2; }
1733 LIR_Opr tmp3_opr() const { return _tmp3; }
1734 LIR_Opr tmp4_opr() const { return _tmp4; }
1735 LIR_Opr tmp5_opr() const { return _tmp5; }
1736 LIR_Condition condition() const {
1737 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch || code() == lir_assert, "only valid for branch and assert"); return _condition;
1738 }
1739 void set_condition(LIR_Condition condition) {
1740 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch, "only valid for branch"); _condition = condition;
1741 }
1742
1743 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1744 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1745
1746 virtual void emit_code(LIR_Assembler* masm);
1747 virtual LIR_Op2* as_Op2() { return this; }
1748 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1749 };
1750
1751 class LIR_OpBranch: public LIR_Op2 {
1752 friend class LIR_OpVisitState;
1753
1754 private:
1755 Label* _label;
1756 BlockBegin* _block; // if this is a branch to a block, this is the block
1757 BlockBegin* _ublock; // if this is a float-branch, this is the unordered block
1758 CodeStub* _stub; // if this is a branch to a stub, this is the stub
1759
1760 public:
1761 LIR_OpBranch(LIR_Condition cond, Label* lbl)
1762 : LIR_Op2(lir_branch, cond, LIR_OprFact::illegalOpr, LIR_OprFact::illegalOpr, (CodeEmitInfo*) nullptr)
1763 , _label(lbl)
1764 , _block(nullptr)
1765 , _ublock(nullptr)
1766 , _stub(nullptr) { }
1767
1768 LIR_OpBranch(LIR_Condition cond, BlockBegin* block);
1769 LIR_OpBranch(LIR_Condition cond, CodeStub* stub);
1770
1771 // for unordered comparisons
1772 LIR_OpBranch(LIR_Condition cond, BlockBegin* block, BlockBegin* ublock);
1773
1774 LIR_Condition cond() const {
1775 return condition();
1776 }
1777
1778 void set_cond(LIR_Condition cond) {
1779 set_condition(cond);
1780 }
1781
1782 Label* label() const { return _label; }
1783 BlockBegin* block() const { return _block; }
1784 BlockBegin* ublock() const { return _ublock; }
1785 CodeStub* stub() const { return _stub; }
1786
1787 void change_block(BlockBegin* b);
1788 void change_ublock(BlockBegin* b);
1789 void negate_cond();
1790
1791 virtual void emit_code(LIR_Assembler* masm);
1792 virtual LIR_OpBranch* as_OpBranch() { return this; }
1793 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1794 };
1795
1796 class LIR_OpAllocArray : public LIR_Op {
1797 friend class LIR_OpVisitState;
1798
1799 private:
1800 LIR_Opr _klass;
1801 LIR_Opr _len;
1802 LIR_Opr _tmp1;
1803 LIR_Opr _tmp2;
1804 LIR_Opr _tmp3;
1805 LIR_Opr _tmp4;
1806 CodeStub* _stub;
1807 BasicType _type;
1808 bool _zero_array;
1809 bool _always_slow_path;
1810
1811 public:
1812 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 always_slow_path)
1813 : LIR_Op(lir_alloc_array, result, nullptr)
1814 , _klass(klass)
1815 , _len(len)
1816 , _tmp1(t1)
1817 , _tmp2(t2)
1818 , _tmp3(t3)
1819 , _tmp4(t4)
1820 , _stub(stub)
1821 , _type(type)
1822 , _zero_array(zero_array)
1823 , _always_slow_path(always_slow_path) {}
1824
1825 LIR_Opr klass() const { return _klass; }
1826 LIR_Opr len() const { return _len; }
1827 LIR_Opr obj() const { return result_opr(); }
1828 LIR_Opr tmp1() const { return _tmp1; }
1829 LIR_Opr tmp2() const { return _tmp2; }
1830 LIR_Opr tmp3() const { return _tmp3; }
1831 LIR_Opr tmp4() const { return _tmp4; }
1832 BasicType type() const { return _type; }
1833 CodeStub* stub() const { return _stub; }
1834 bool zero_array() const { return _zero_array; }
1835 bool always_slow_path() const { return _always_slow_path; }
1836
1837 virtual void emit_code(LIR_Assembler* masm);
1838 virtual LIR_OpAllocArray * as_OpAllocArray () { return this; }
1839 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1840 };
1841
1842
1843 class LIR_Op3: public LIR_Op {
1844 friend class LIR_OpVisitState;
1845
1846 private:
1847 LIR_Opr _opr1;
1848 LIR_Opr _opr2;
1849 LIR_Opr _opr3;
1850 public:
1851 LIR_Op3(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr result, CodeEmitInfo* info = nullptr)
1852 : LIR_Op(code, result, info)
1853 , _opr1(opr1)
1854 , _opr2(opr2)
1855 , _opr3(opr3) { assert(is_in_range(code, begin_op3, end_op3), "code check"); }
1856 LIR_Opr in_opr1() const { return _opr1; }
1857 LIR_Opr in_opr2() const { return _opr2; }
1858 LIR_Opr in_opr3() const { return _opr3; }
1859
1860 virtual void emit_code(LIR_Assembler* masm);
1861 virtual LIR_Op3* as_Op3() { return this; }
1862 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1863 };
1864
1865 class LIR_Op4: public LIR_Op {
1866 friend class LIR_OpVisitState;
1867 protected:
1868 LIR_Opr _opr1;
1869 LIR_Opr _opr2;
1870 LIR_Opr _opr3;
1871 LIR_Opr _opr4;
1872 LIR_Opr _tmp1;
1873 LIR_Opr _tmp2;
1874 LIR_Opr _tmp3;
1875 LIR_Opr _tmp4;
1876 LIR_Opr _tmp5;
1877 LIR_Condition _condition;
1878 BasicType _type;
1879
1880 public:
1881 LIR_Op4(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr opr4,
1882 LIR_Opr result, BasicType type)
1883 : LIR_Op(code, result, nullptr)
1884 , _opr1(opr1)
1885 , _opr2(opr2)
1886 , _opr3(opr3)
1887 , _opr4(opr4)
1888 , _tmp1(LIR_OprFact::illegalOpr)
1889 , _tmp2(LIR_OprFact::illegalOpr)
1890 , _tmp3(LIR_OprFact::illegalOpr)
1891 , _tmp4(LIR_OprFact::illegalOpr)
1892 , _tmp5(LIR_OprFact::illegalOpr)
1893 , _condition(condition)
1894 , _type(type) {
1895 assert(code == lir_cmove, "code check");
1896 assert(type != T_ILLEGAL, "cmove should have type");
1897 }
1898
1899 LIR_Opr in_opr1() const { return _opr1; }
1900 LIR_Opr in_opr2() const { return _opr2; }
1901 LIR_Opr in_opr3() const { return _opr3; }
1902 LIR_Opr in_opr4() const { return _opr4; }
1903 BasicType type() const { return _type; }
1904 LIR_Opr tmp1_opr() const { return _tmp1; }
1905 LIR_Opr tmp2_opr() const { return _tmp2; }
1906 LIR_Opr tmp3_opr() const { return _tmp3; }
1907 LIR_Opr tmp4_opr() const { return _tmp4; }
1908 LIR_Opr tmp5_opr() const { return _tmp5; }
1909
1910 LIR_Condition condition() const { return _condition; }
1911 void set_condition(LIR_Condition condition) { _condition = condition; }
1912
1913 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1914 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1915 void set_in_opr3(LIR_Opr opr) { _opr3 = opr; }
1916 void set_in_opr4(LIR_Opr opr) { _opr4 = opr; }
1917 virtual void emit_code(LIR_Assembler* masm);
1918 virtual LIR_Op4* as_Op4() { return this; }
1919
1920 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1921 };
1922
1923 //--------------------------------
1924 class LabelObj: public CompilationResourceObj {
1925 private:
1926 Label _label;
1927 public:
1928 LabelObj() {}
1929 Label* label() { return &_label; }
1930 };
1931
1932
1933 class LIR_OpLock: public LIR_Op {
1934 friend class LIR_OpVisitState;
1935
1936 private:
1937 LIR_Opr _hdr;
1938 LIR_Opr _obj;
1939 LIR_Opr _lock;
1940 LIR_Opr _scratch;
1941 CodeStub* _stub;
1942 CodeStub* _throw_ie_stub;
1943 public:
1944 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)
1945 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1946 , _hdr(hdr)
1947 , _obj(obj)
1948 , _lock(lock)
1949 , _scratch(scratch)
1950 , _stub(stub)
1951 , _throw_ie_stub(throw_ie_stub) {}
1952
1953 LIR_Opr hdr_opr() const { return _hdr; }
1954 LIR_Opr obj_opr() const { return _obj; }
1955 LIR_Opr lock_opr() const { return _lock; }
1956 LIR_Opr scratch_opr() const { return _scratch; }
1957 CodeStub* stub() const { return _stub; }
1958 CodeStub* throw_ie_stub() const { return _throw_ie_stub; }
1959
1960 virtual void emit_code(LIR_Assembler* masm);
1961 virtual LIR_OpLock* as_OpLock() { return this; }
1962 void print_instr(outputStream* out) const PRODUCT_RETURN;
1963 };
1964
1965 class LIR_OpLoadKlass: public LIR_Op {
1966 friend class LIR_OpVisitState;
1967
1968 private:
1969 LIR_Opr _obj;
1970 public:
1971 LIR_OpLoadKlass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info)
1972 : LIR_Op(lir_load_klass, result, info)
1973 , _obj(obj)
1974 {}
1975
1976 LIR_Opr obj() const { return _obj; }
1977
1978 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return this; }
1979 virtual void emit_code(LIR_Assembler* masm);
1980 void print_instr(outputStream* out) const PRODUCT_RETURN;
1981 };
1982
1983 #ifdef ASSERT
1984 // LIR_OpAssert
1985 class LIR_OpAssert : public LIR_Op2 {
1986 friend class LIR_OpVisitState;
1987
1988 private:
1989 const char* _msg;
1990 bool _halt;
1991
1992 public:
1993 LIR_OpAssert(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, const char* msg, bool halt)
1994 : LIR_Op2(lir_assert, condition, opr1, opr2)
1995 , _msg(msg)
1996 , _halt(halt) {
1997 }
1998
1999 const char* msg() const { return _msg; }
2000 bool halt() const { return _halt; }
2001
2002 virtual void emit_code(LIR_Assembler* masm);
2003 virtual LIR_OpAssert* as_OpAssert() { return this; }
2004 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2005 };
2006 #endif
2007
2008 // LIR_OpCompareAndSwap
2009 class LIR_OpCompareAndSwap : public LIR_Op {
2010 friend class LIR_OpVisitState;
2011
2012 private:
2013 LIR_Opr _addr;
2014 LIR_Opr _cmp_value;
2015 LIR_Opr _new_value;
2016 LIR_Opr _tmp1;
2017 LIR_Opr _tmp2;
2018
2019 public:
2020 LIR_OpCompareAndSwap(LIR_Code code, LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2021 LIR_Opr t1, LIR_Opr t2, LIR_Opr result)
2022 : LIR_Op(code, result, nullptr) // no result, no info
2023 , _addr(addr)
2024 , _cmp_value(cmp_value)
2025 , _new_value(new_value)
2026 , _tmp1(t1)
2027 , _tmp2(t2) { }
2028
2029 LIR_Opr addr() const { return _addr; }
2030 LIR_Opr cmp_value() const { return _cmp_value; }
2031 LIR_Opr new_value() const { return _new_value; }
2032 LIR_Opr tmp1() const { return _tmp1; }
2033 LIR_Opr tmp2() const { return _tmp2; }
2034
2035 virtual void emit_code(LIR_Assembler* masm);
2036 virtual LIR_OpCompareAndSwap * as_OpCompareAndSwap () { return this; }
2037 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2038 };
2039
2040 // LIR_OpProfileCall
2041 class LIR_OpProfileCall : public LIR_Op {
2042 friend class LIR_OpVisitState;
2043
2044 private:
2045 ciMethod* _profiled_method;
2046 int _profiled_bci;
2047 ciMethod* _profiled_callee;
2048 LIR_Opr _mdo;
2049 LIR_Opr _recv;
2050 LIR_Opr _tmp1;
2051 ciKlass* _known_holder;
2052
2053 public:
2054 // Destroys recv
2055 LIR_OpProfileCall(ciMethod* profiled_method, int profiled_bci, ciMethod* profiled_callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* known_holder)
2056 : LIR_Op(lir_profile_call, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2057 , _profiled_method(profiled_method)
2058 , _profiled_bci(profiled_bci)
2059 , _profiled_callee(profiled_callee)
2060 , _mdo(mdo)
2061 , _recv(recv)
2062 , _tmp1(t1)
2063 , _known_holder(known_holder) { }
2064
2065 ciMethod* profiled_method() const { return _profiled_method; }
2066 int profiled_bci() const { return _profiled_bci; }
2067 ciMethod* profiled_callee() const { return _profiled_callee; }
2068 LIR_Opr mdo() const { return _mdo; }
2069 LIR_Opr recv() const { return _recv; }
2070 LIR_Opr tmp1() const { return _tmp1; }
2071 ciKlass* known_holder() const { return _known_holder; }
2072
2073 virtual void emit_code(LIR_Assembler* masm);
2074 virtual LIR_OpProfileCall* as_OpProfileCall() { return this; }
2075 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2076 bool should_profile_receiver_type() const {
2077 bool callee_is_static = _profiled_callee->is_loaded() && _profiled_callee->is_static();
2078 bool callee_is_private = _profiled_callee->is_loaded() && _profiled_callee->is_private();
2079 Bytecodes::Code bc = _profiled_method->java_code_at_bci(_profiled_bci);
2080 bool call_is_virtual = (bc == Bytecodes::_invokevirtual && !callee_is_private) || bc == Bytecodes::_invokeinterface;
2081 return C1ProfileVirtualCalls && call_is_virtual && !callee_is_static;
2082 }
2083 };
2084
2085 // LIR_OpProfileType
2086 class LIR_OpProfileType : public LIR_Op {
2087 friend class LIR_OpVisitState;
2088
2089 private:
2090 LIR_Opr _mdp;
2091 LIR_Opr _obj;
2092 LIR_Opr _tmp;
2093 ciKlass* _exact_klass; // non null if we know the klass statically (no need to load it from _obj)
2094 intptr_t _current_klass; // what the profiling currently reports
2095 bool _not_null; // true if we know statically that _obj cannot be null
2096 bool _no_conflict; // true if we're profling parameters, _exact_klass is not null and we know
2097 // _exact_klass it the only possible type for this parameter in any context.
2098
2099 public:
2100 // Destroys recv
2101 LIR_OpProfileType(LIR_Opr mdp, LIR_Opr obj, ciKlass* exact_klass, intptr_t current_klass, LIR_Opr tmp, bool not_null, bool no_conflict)
2102 : LIR_Op(lir_profile_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2103 , _mdp(mdp)
2104 , _obj(obj)
2105 , _tmp(tmp)
2106 , _exact_klass(exact_klass)
2107 , _current_klass(current_klass)
2108 , _not_null(not_null)
2109 , _no_conflict(no_conflict) { }
2110
2111 LIR_Opr mdp() const { return _mdp; }
2112 LIR_Opr obj() const { return _obj; }
2113 LIR_Opr tmp() const { return _tmp; }
2114 ciKlass* exact_klass() const { return _exact_klass; }
2115 intptr_t current_klass() const { return _current_klass; }
2116 bool not_null() const { return _not_null; }
2117 bool no_conflict() const { return _no_conflict; }
2118
2119 virtual void emit_code(LIR_Assembler* masm);
2120 virtual LIR_OpProfileType* as_OpProfileType() { return this; }
2121 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2122 };
2123
2124 // LIR_OpProfileInlineType
2125 class LIR_OpProfileInlineType : public LIR_Op {
2126 friend class LIR_OpVisitState;
2127
2128 private:
2129 LIR_Opr _mdp;
2130 LIR_Opr _obj;
2131 int _flag;
2132 LIR_Opr _tmp;
2133 bool _not_null; // true if we know statically that _obj cannot be null
2134
2135 public:
2136 // Destroys recv
2137 LIR_OpProfileInlineType(LIR_Opr mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null)
2138 : LIR_Op(lir_profile_inline_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2139 , _mdp(mdp)
2140 , _obj(obj)
2141 , _flag(flag)
2142 , _tmp(tmp)
2143 , _not_null(not_null) { }
2144
2145 LIR_Opr mdp() const { return _mdp; }
2146 LIR_Opr obj() const { return _obj; }
2147 int flag() const { return _flag; }
2148 LIR_Opr tmp() const { return _tmp; }
2149 bool not_null() const { return _not_null; }
2150
2151 virtual void emit_code(LIR_Assembler* masm);
2152 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return this; }
2153 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2154 };
2155
2156 class LIR_InsertionBuffer;
2157
2158 //--------------------------------LIR_List---------------------------------------------------
2159 // Maintains a list of LIR instructions (one instance of LIR_List per basic block)
2160 // The LIR instructions are appended by the LIR_List class itself;
2161 //
2162 // Notes:
2163 // - all offsets are(should be) in bytes
2164 // - local positions are specified with an offset, with offset 0 being local 0
2165
2166 class LIR_List: public CompilationResourceObj {
2167 private:
2168 LIR_OpList _operations;
2169
2170 Compilation* _compilation;
2171 #ifndef PRODUCT
2172 BlockBegin* _block;
2173 #endif
2174 #ifdef ASSERT
2175 const char * _file;
2176 int _line;
2177 #endif
2178 #ifdef RISCV
2179 LIR_Opr _cmp_opr1;
2180 LIR_Opr _cmp_opr2;
2181 #endif
2182
2183 public:
2184 void append(LIR_Op* op) {
2185 if (op->source() == nullptr)
2186 op->set_source(_compilation->current_instruction());
2187 #ifndef PRODUCT
2188 if (PrintIRWithLIR) {
2189 _compilation->maybe_print_current_instruction();
2190 op->print(); tty->cr();
2191 }
2192 #endif // PRODUCT
2193
2194 #ifdef RISCV
2195 set_cmp_oprs(op);
2196 // lir_cmp set cmp oprs only on riscv
2197 if (op->code() == lir_cmp) return;
2198 #endif
2199
2200 _operations.append(op);
2201
2202 #ifdef ASSERT
2203 op->verify();
2204 op->set_file_and_line(_file, _line);
2205 _file = nullptr;
2206 _line = 0;
2207 #endif
2208 }
2209
2210 LIR_List(Compilation* compilation, BlockBegin* block = nullptr);
2211
2212 #ifdef ASSERT
2213 void set_file_and_line(const char * file, int line);
2214 #endif
2215
2216 #ifdef RISCV
2217 void set_cmp_oprs(LIR_Op* op);
2218 #endif
2219
2220 //---------- accessors ---------------
2221 LIR_OpList* instructions_list() { return &_operations; }
2222 int length() const { return _operations.length(); }
2223 LIR_Op* at(int i) const { return _operations.at(i); }
2224
2225 NOT_PRODUCT(BlockBegin* block() const { return _block; });
2226
2227 // insert LIR_Ops in buffer to right places in LIR_List
2228 void append(LIR_InsertionBuffer* buffer);
2229
2230 //---------- mutators ---------------
2231 void insert_before(int i, LIR_List* op_list) { _operations.insert_before(i, op_list->instructions_list()); }
2232 void insert_before(int i, LIR_Op* op) { _operations.insert_before(i, op); }
2233 void remove_at(int i) { _operations.remove_at(i); }
2234
2235 //---------- printing -------------
2236 void print_instructions() PRODUCT_RETURN;
2237
2238
2239 //---------- instructions -------------
2240 void call_opt_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2241 address dest, LIR_OprList* arguments,
2242 CodeEmitInfo* info) {
2243 append(new LIR_OpJavaCall(lir_optvirtual_call, method, receiver, result, dest, arguments, info));
2244 }
2245 void call_static(ciMethod* method, LIR_Opr result,
2246 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2247 append(new LIR_OpJavaCall(lir_static_call, method, LIR_OprFact::illegalOpr, result, dest, arguments, info));
2248 }
2249 void call_icvirtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2250 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2251 append(new LIR_OpJavaCall(lir_icvirtual_call, method, receiver, result, dest, arguments, info));
2252 }
2253 void call_dynamic(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2254 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2255 append(new LIR_OpJavaCall(lir_dynamic_call, method, receiver, result, dest, arguments, info));
2256 }
2257
2258 void get_thread(LIR_Opr result) { append(new LIR_Op0(lir_get_thread, result)); }
2259 void membar() { append(new LIR_Op0(lir_membar)); }
2260 void membar_acquire() { append(new LIR_Op0(lir_membar_acquire)); }
2261 void membar_release() { append(new LIR_Op0(lir_membar_release)); }
2262 void membar_loadload() { append(new LIR_Op0(lir_membar_loadload)); }
2263 void membar_storestore() { append(new LIR_Op0(lir_membar_storestore)); }
2264 void membar_loadstore() { append(new LIR_Op0(lir_membar_loadstore)); }
2265 void membar_storeload() { append(new LIR_Op0(lir_membar_storeload)); }
2266
2267 void nop() { append(new LIR_Op0(lir_nop)); }
2268
2269 void std_entry(LIR_Opr receiver) { append(new LIR_Op0(lir_std_entry, receiver)); }
2270 void osr_entry(LIR_Opr osrPointer) { append(new LIR_Op0(lir_osr_entry, osrPointer)); }
2271
2272 void on_spin_wait() { append(new LIR_Op0(lir_on_spin_wait)); }
2273
2274 void branch_destination(Label* lbl) { append(new LIR_OpLabel(lbl)); }
2275
2276 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)); }
2277
2278 // result is a stack location for old backend and vreg for UseLinearScan
2279 // stack_loc_temp is an illegal register for old backend
2280 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)); }
2281 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)); }
2282 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)); }
2283 void move_wide(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = nullptr) {
2284 if (UseCompressedOops) {
2285 append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info, lir_move_wide));
2286 } else {
2287 move(src, dst, info);
2288 }
2289 }
2290 void move_wide(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = nullptr) {
2291 if (UseCompressedOops) {
2292 append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info, lir_move_wide));
2293 } else {
2294 move(src, dst, info);
2295 }
2296 }
2297 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)); }
2298
2299 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)); }
2300 void oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info);
2301
2302 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)); }
2303 void klass2reg_patch(Metadata* o, LIR_Opr reg, CodeEmitInfo* info);
2304
2305 void safepoint(LIR_Opr tmp, CodeEmitInfo* info) { append(new LIR_Op1(lir_safepoint, tmp, info)); }
2306 void return_op(LIR_Opr result) { append(new LIR_OpReturn(result)); }
2307
2308 void convert(Bytecodes::Code code, LIR_Opr left, LIR_Opr dst) { append(new LIR_OpConvert(code, left, dst)); }
2309
2310 void logical_and (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_and, left, right, dst)); }
2311 void logical_or (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_or, left, right, dst)); }
2312 void logical_xor (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_xor, left, right, dst)); }
2313
2314 void null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null = false);
2315 void throw_exception(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2316 append(new LIR_Op2(lir_throw, exceptionPC, exceptionOop, LIR_OprFact::illegalOpr, info));
2317 }
2318 void unwind_exception(LIR_Opr exceptionOop) {
2319 append(new LIR_Op1(lir_unwind, exceptionOop));
2320 }
2321
2322 void push(LIR_Opr opr) { append(new LIR_Op1(lir_push, opr)); }
2323 void pop(LIR_Opr reg) { append(new LIR_Op1(lir_pop, reg)); }
2324
2325 void cmp(LIR_Condition condition, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info = nullptr) {
2326 append(new LIR_Op2(lir_cmp, condition, left, right, info));
2327 }
2328 void cmp(LIR_Condition condition, LIR_Opr left, int right, CodeEmitInfo* info = nullptr) {
2329 cmp(condition, left, LIR_OprFact::intConst(right), info);
2330 }
2331
2332 void cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info);
2333 void cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info);
2334
2335 void cmove(LIR_Condition condition, LIR_Opr src1, LIR_Opr src2, LIR_Opr dst, BasicType type,
2336 LIR_Opr cmp_opr1 = LIR_OprFact::illegalOpr, LIR_Opr cmp_opr2 = LIR_OprFact::illegalOpr) {
2337 append(new LIR_Op4(lir_cmove, condition, src1, src2, cmp_opr1, cmp_opr2, dst, type));
2338 }
2339
2340 void cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2341 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2342 void cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2343 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2344 void cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2345 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2346
2347 void abs (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_abs , from, to, tmp)); }
2348 void negate(LIR_Opr from, LIR_Opr to, LIR_Opr tmp = LIR_OprFact::illegalOpr) { append(new LIR_Op1(lir_neg, from, to, tmp)); }
2349 void sqrt(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_sqrt, from, to, tmp)); }
2350 void fmad(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmad, from, from1, from2, to)); }
2351 void fmaf(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmaf, from, from1, from2, to)); }
2352 void f2hf(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_f2hf, from, to, tmp)); }
2353 void hf2f(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_hf2f, from, to, tmp)); }
2354
2355 void add (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_add, left, right, res)); }
2356 void sub (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_sub, left, right, res, info)); }
2357 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_mul, left, right, res)); }
2358 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_mul, left, right, res, tmp)); }
2359 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_div, left, right, res, info)); }
2360 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_div, left, right, res, tmp)); }
2361 void rem (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_rem, left, right, res, info)); }
2362
2363 void volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2364 void volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2365
2366 void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2367
2368 void store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2369 void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2370 void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2371 void volatile_store_mem_reg(LIR_Opr src, LIR_Address* address, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2372 void volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2373
2374 void idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2375 void idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2376 void irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2377 void irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2378
2379 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);
2380 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 always_slow_path = false);
2381
2382 // jump is an unconditional branch
2383 void jump(BlockBegin* block) {
2384 append(new LIR_OpBranch(lir_cond_always, block));
2385 }
2386 void jump(CodeStub* stub) {
2387 append(new LIR_OpBranch(lir_cond_always, stub));
2388 }
2389 void branch(LIR_Condition cond, Label* lbl) {
2390 append(new LIR_OpBranch(cond, lbl));
2391 }
2392 // Should not be used for fp comparisons
2393 void branch(LIR_Condition cond, BlockBegin* block) {
2394 append(new LIR_OpBranch(cond, block));
2395 }
2396 // Should not be used for fp comparisons
2397 void branch(LIR_Condition cond, CodeStub* stub) {
2398 append(new LIR_OpBranch(cond, stub));
2399 }
2400 // Should only be used for fp comparisons
2401 void branch(LIR_Condition cond, BlockBegin* block, BlockBegin* unordered) {
2402 append(new LIR_OpBranch(cond, block, unordered));
2403 }
2404
2405 void shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2406 void shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2407 void unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2408
2409 void shift_left(LIR_Opr value, int count, LIR_Opr dst) { shift_left(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2410 void shift_right(LIR_Opr value, int count, LIR_Opr dst) { shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2411 void unsigned_shift_right(LIR_Opr value, int count, LIR_Opr dst) { unsigned_shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2412
2413 void lcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_cmp_l2i, left, right, dst)); }
2414 void fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less);
2415
2416 void call_runtime_leaf(address routine, LIR_Opr tmp, LIR_Opr result, LIR_OprList* arguments) {
2417 append(new LIR_OpRTCall(routine, tmp, result, arguments));
2418 }
2419
2420 void call_runtime(address routine, LIR_Opr tmp, LIR_Opr result,
2421 LIR_OprList* arguments, CodeEmitInfo* info) {
2422 append(new LIR_OpRTCall(routine, tmp, result, arguments, info));
2423 }
2424
2425 void load_stack_address_monitor(int monitor_ix, LIR_Opr dst) { append(new LIR_Op1(lir_monaddr, LIR_OprFact::intConst(monitor_ix), dst)); }
2426 void unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub);
2427 void lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_ie_stub=nullptr);
2428
2429 void breakpoint() { append(new LIR_Op0(lir_breakpoint)); }
2430
2431 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)); }
2432
2433 void update_crc32(LIR_Opr crc, LIR_Opr val, LIR_Opr res) { append(new LIR_OpUpdateCRC32(crc, val, res)); }
2434
2435 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);
2436 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);
2437 void check_flat_array(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
2438 void check_null_free_array(LIR_Opr array, LIR_Opr tmp);
2439 void substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
2440 LIR_Opr tmp1, LIR_Opr tmp2,
2441 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
2442 CodeEmitInfo* info, CodeStub* stub);
2443
2444 void checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
2445 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
2446 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
2447 ciMethod* profiled_method, int profiled_bci, bool is_null_free);
2448 // MethodData* profiling
2449 void profile_call(ciMethod* method, int bci, ciMethod* callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* cha_klass) {
2450 append(new LIR_OpProfileCall(method, bci, callee, mdo, recv, t1, cha_klass));
2451 }
2452 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) {
2453 append(new LIR_OpProfileType(LIR_OprFact::address(mdp), obj, exact_klass, current_klass, tmp, not_null, no_conflict));
2454 }
2455 void profile_inline_type(LIR_Address* mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null) {
2456 append(new LIR_OpProfileInlineType(LIR_OprFact::address(mdp), obj, flag, tmp, not_null));
2457 }
2458
2459 void xadd(LIR_Opr src, LIR_Opr add, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xadd, src, add, res, tmp)); }
2460 void xchg(LIR_Opr src, LIR_Opr set, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xchg, src, set, res, tmp)); }
2461
2462 void load_klass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info) { append(new LIR_OpLoadKlass(obj, result, info)); }
2463
2464 #ifdef ASSERT
2465 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)); }
2466 #endif
2467 };
2468
2469 void print_LIR(BlockList* blocks);
2470
2471 class LIR_InsertionBuffer : public CompilationResourceObj {
2472 private:
2473 LIR_List* _lir; // the lir list where ops of this buffer should be inserted later (null when uninitialized)
2474
2475 // list of insertion points. index and count are stored alternately:
2476 // _index_and_count[i * 2]: the index into lir list where "count" ops should be inserted
2477 // _index_and_count[i * 2 + 1]: the number of ops to be inserted at index
2478 intStack _index_and_count;
2479
2480 // the LIR_Ops to be inserted
2481 LIR_OpList _ops;
2482
2483 void append_new(int index, int count) { _index_and_count.append(index); _index_and_count.append(count); }
2484 void set_index_at(int i, int value) { _index_and_count.at_put((i << 1), value); }
2485 void set_count_at(int i, int value) { _index_and_count.at_put((i << 1) + 1, value); }
2486
2487 #ifdef ASSERT
2488 void verify();
2489 #endif
2490 public:
2491 LIR_InsertionBuffer() : _lir(nullptr), _index_and_count(8), _ops(8) { }
2492
2493 // must be called before using the insertion buffer
2494 void init(LIR_List* lir) { assert(!initialized(), "already initialized"); _lir = lir; _index_and_count.clear(); _ops.clear(); }
2495 bool initialized() const { return _lir != nullptr; }
2496 // called automatically when the buffer is appended to the LIR_List
2497 void finish() { _lir = nullptr; }
2498
2499 // accessors
2500 LIR_List* lir_list() const { return _lir; }
2501 int number_of_insertion_points() const { return _index_and_count.length() >> 1; }
2502 int index_at(int i) const { return _index_and_count.at((i << 1)); }
2503 int count_at(int i) const { return _index_and_count.at((i << 1) + 1); }
2504
2505 int number_of_ops() const { return _ops.length(); }
2506 LIR_Op* op_at(int i) const { return _ops.at(i); }
2507
2508 // append an instruction to the buffer
2509 void append(int index, LIR_Op* op);
2510
2511 // instruction
2512 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)); }
2513 };
2514
2515
2516 //
2517 // LIR_OpVisitState is used for manipulating LIR_Ops in an abstract way.
2518 // Calling a LIR_Op's visit function with a LIR_OpVisitState causes
2519 // information about the input, output and temporaries used by the
2520 // op to be recorded. It also records whether the op has call semantics
2521 // and also records all the CodeEmitInfos used by this op.
2522 //
2523
2524
2525 class LIR_OpVisitState: public StackObj {
2526 public:
2527 typedef enum { inputMode, firstMode = inputMode, tempMode, outputMode, numModes, invalidMode = -1 } OprMode;
2528
2529 enum {
2530 maxNumberOfOperands = 21,
2531 maxNumberOfInfos = 4
2532 };
2533
2534 private:
2535 LIR_Op* _op;
2536
2537 // optimization: the operands and infos are not stored in a variable-length
2538 // list, but in a fixed-size array to save time of size checks and resizing
2539 int _oprs_len[numModes];
2540 LIR_Opr* _oprs_new[numModes][maxNumberOfOperands];
2541 int _info_len;
2542 CodeEmitInfo* _info_new[maxNumberOfInfos];
2543
2544 bool _has_call;
2545 bool _has_slow_case;
2546
2547
2548 // only include register operands
2549 // addresses are decomposed to the base and index registers
2550 // constants and stack operands are ignored
2551 void append(LIR_Opr& opr, OprMode mode) {
2552 assert(opr->is_valid(), "should not call this otherwise");
2553 assert(mode >= 0 && mode < numModes, "bad mode");
2554
2555 if (opr->is_register()) {
2556 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2557 _oprs_new[mode][_oprs_len[mode]++] = &opr;
2558
2559 } else if (opr->is_pointer()) {
2560 LIR_Address* address = opr->as_address_ptr();
2561 if (address != nullptr) {
2562 // special handling for addresses: add base and index register of the address
2563 // both are always input operands or temp if we want to extend
2564 // their liveness!
2565 if (mode == outputMode) {
2566 mode = inputMode;
2567 }
2568 assert (mode == inputMode || mode == tempMode, "input or temp only for addresses");
2569 if (address->_base->is_valid()) {
2570 assert(address->_base->is_register(), "must be");
2571 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2572 _oprs_new[mode][_oprs_len[mode]++] = &address->_base;
2573 }
2574 if (address->_index->is_valid()) {
2575 assert(address->_index->is_register(), "must be");
2576 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2577 _oprs_new[mode][_oprs_len[mode]++] = &address->_index;
2578 }
2579
2580 } else {
2581 assert(opr->is_constant(), "constant operands are not processed");
2582 }
2583 } else {
2584 assert(opr->is_stack(), "stack operands are not processed");
2585 }
2586 }
2587
2588 void append(CodeEmitInfo* info) {
2589 assert(info != nullptr, "should not call this otherwise");
2590 assert(_info_len < maxNumberOfInfos, "array overflow");
2591 _info_new[_info_len++] = info;
2592 }
2593
2594 public:
2595 LIR_OpVisitState() { reset(); }
2596
2597 LIR_Op* op() const { return _op; }
2598 void set_op(LIR_Op* op) { reset(); _op = op; }
2599
2600 bool has_call() const { return _has_call; }
2601 bool has_slow_case() const { return _has_slow_case; }
2602
2603 void reset() {
2604 _op = nullptr;
2605 _has_call = false;
2606 _has_slow_case = false;
2607
2608 _oprs_len[inputMode] = 0;
2609 _oprs_len[tempMode] = 0;
2610 _oprs_len[outputMode] = 0;
2611 _info_len = 0;
2612 }
2613
2614
2615 int opr_count(OprMode mode) const {
2616 assert(mode >= 0 && mode < numModes, "bad mode");
2617 return _oprs_len[mode];
2618 }
2619
2620 LIR_Opr opr_at(OprMode mode, int index) const {
2621 assert(mode >= 0 && mode < numModes, "bad mode");
2622 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2623 return *_oprs_new[mode][index];
2624 }
2625
2626 void set_opr_at(OprMode mode, int index, LIR_Opr opr) const {
2627 assert(mode >= 0 && mode < numModes, "bad mode");
2628 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2629 *_oprs_new[mode][index] = opr;
2630 }
2631
2632 int info_count() const {
2633 return _info_len;
2634 }
2635
2636 CodeEmitInfo* info_at(int index) const {
2637 assert(index < _info_len, "index out of bounds");
2638 return _info_new[index];
2639 }
2640
2641 XHandlers* all_xhandler();
2642
2643 // collects all register operands of the instruction
2644 void visit(LIR_Op* op);
2645
2646 #ifdef ASSERT
2647 // check that an operation has no operands
2648 bool no_operands(LIR_Op* op);
2649 #endif
2650
2651 // LIR_Op visitor functions use these to fill in the state
2652 void do_input(LIR_Opr& opr) { append(opr, LIR_OpVisitState::inputMode); }
2653 void do_output(LIR_Opr& opr) { append(opr, LIR_OpVisitState::outputMode); }
2654 void do_temp(LIR_Opr& opr) { append(opr, LIR_OpVisitState::tempMode); }
2655 void do_info(CodeEmitInfo* info) { append(info); }
2656
2657 void do_stub(CodeStub* stub);
2658 void do_call() { _has_call = true; }
2659 void do_slow_case() { _has_slow_case = true; }
2660 void do_slow_case(CodeEmitInfo* info) {
2661 _has_slow_case = true;
2662 append(info);
2663 }
2664 };
2665
2666
2667 inline LIR_Opr LIR_Opr::illegalOpr() { return LIR_OprFact::illegalOpr; };
2668
2669 inline LIR_Opr LIR_Opr::nullOpr() { return LIR_OprFact::nullOpr; };
2670
2671 #endif // SHARE_C1_C1_LIR_HPP