1 /*
2 * Copyright (c) 2000, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_C1_C1_LIR_HPP
26 #define SHARE_C1_C1_LIR_HPP
27
28 #include "c1/c1_Defs.hpp"
29 #include "c1/c1_ValueType.hpp"
30 #include "oops/method.hpp"
31 #include "utilities/globalDefinitions.hpp"
32 #include "utilities/macros.hpp"
33
34 class BlockBegin;
35 class BlockList;
36 class LIR_Assembler;
37 class CodeEmitInfo;
38 class CodeStub;
39 class CodeStubList;
40 class C1SafepointPollStub;
41 class ArrayCopyStub;
42 class LIR_Op;
43 class ciType;
44 class ValueType;
45 class LIR_OpVisitState;
46
47 //---------------------------------------------------------------------
48 // LIR Operands
49 // LIR_OprPtr
50 // LIR_Const
51 // LIR_Address
52 //---------------------------------------------------------------------
53 class LIR_OprPtr;
54 class LIR_Const;
55 class LIR_Address;
56 class LIR_OprVisitor;
57 class LIR_Opr;
58
59 typedef int RegNr;
60
61 typedef GrowableArray<LIR_Opr> LIR_OprList;
62 typedef GrowableArray<LIR_Op*> LIR_OpArray;
63 typedef GrowableArray<LIR_Op*> LIR_OpList;
64
65 // define LIR_OprPtr early so LIR_Opr can refer to it
66 class LIR_OprPtr: public CompilationResourceObj {
67 public:
68 bool is_oop_pointer() const { return (type() == T_OBJECT); }
69 bool is_float_kind() const { BasicType t = type(); return (t == T_FLOAT) || (t == T_DOUBLE); }
70
71 virtual LIR_Const* as_constant() { return nullptr; }
72 virtual LIR_Address* as_address() { return nullptr; }
73 virtual BasicType type() const = 0;
74 virtual void print_value_on(outputStream* out) const = 0;
75 };
76
77
78
79 // LIR constants
80 class LIR_Const: public LIR_OprPtr {
81 private:
82 JavaValue _value;
83
84 void type_check(BasicType t) const { assert(type() == t, "type check"); }
85 void type_check(BasicType t1, BasicType t2) const { assert(type() == t1 || type() == t2, "type check"); }
86 void type_check(BasicType t1, BasicType t2, BasicType t3) const { assert(type() == t1 || type() == t2 || type() == t3, "type check"); }
87
88 public:
89 LIR_Const(jint i, bool is_address=false) { _value.set_type(is_address?T_ADDRESS:T_INT); _value.set_jint(i); }
90 LIR_Const(jlong l) { _value.set_type(T_LONG); _value.set_jlong(l); }
91 LIR_Const(jfloat f) { _value.set_type(T_FLOAT); _value.set_jfloat(f); }
92 LIR_Const(jdouble d) { _value.set_type(T_DOUBLE); _value.set_jdouble(d); }
93 LIR_Const(jobject o) { _value.set_type(T_OBJECT); _value.set_jobject(o); }
94 LIR_Const(void* p) {
95 #ifdef _LP64
96 assert(sizeof(jlong) >= sizeof(p), "too small");;
97 _value.set_type(T_LONG); _value.set_jlong((jlong)p);
98 #else
99 assert(sizeof(jint) >= sizeof(p), "too small");;
100 _value.set_type(T_INT); _value.set_jint((jint)p);
101 #endif
102 }
103 LIR_Const(Metadata* m) {
104 _value.set_type(T_METADATA);
105 #ifdef _LP64
106 _value.set_jlong((jlong)m);
107 #else
108 _value.set_jint((jint)m);
109 #endif // _LP64
110 }
111
112 virtual BasicType type() const { return _value.get_type(); }
113 virtual LIR_Const* as_constant() { return this; }
114
115 jint as_jint() const { type_check(T_INT, T_ADDRESS); return _value.get_jint(); }
116 jlong as_jlong() const { type_check(T_LONG ); return _value.get_jlong(); }
117 jfloat as_jfloat() const { type_check(T_FLOAT ); return _value.get_jfloat(); }
118 jdouble as_jdouble() const { type_check(T_DOUBLE); return _value.get_jdouble(); }
119 jobject as_jobject() const { type_check(T_OBJECT); return _value.get_jobject(); }
120 jint as_jint_lo() const { type_check(T_LONG ); return low(_value.get_jlong()); }
121 jint as_jint_hi() const { type_check(T_LONG ); return high(_value.get_jlong()); }
122
123 #ifdef _LP64
124 address as_pointer() const { type_check(T_LONG ); return (address)_value.get_jlong(); }
125 Metadata* as_metadata() const { type_check(T_METADATA); return (Metadata*)_value.get_jlong(); }
126 #else
127 address as_pointer() const { type_check(T_INT ); return (address)_value.get_jint(); }
128 Metadata* as_metadata() const { type_check(T_METADATA); return (Metadata*)_value.get_jint(); }
129 #endif
130
131
132 jint as_jint_bits() const { type_check(T_FLOAT, T_INT, T_ADDRESS); return _value.get_jint(); }
133 jint as_jint_lo_bits() const {
134 if (type() == T_DOUBLE) {
135 return low(jlong_cast(_value.get_jdouble()));
136 } else {
137 return as_jint_lo();
138 }
139 }
140 jint as_jint_hi_bits() const {
141 if (type() == T_DOUBLE) {
142 return high(jlong_cast(_value.get_jdouble()));
143 } else {
144 return as_jint_hi();
145 }
146 }
147 jlong as_jlong_bits() const {
148 if (type() == T_DOUBLE) {
149 return jlong_cast(_value.get_jdouble());
150 } else {
151 return as_jlong();
152 }
153 }
154
155 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
156
157
158 bool is_zero_float() {
159 jfloat f = as_jfloat();
160 jfloat ok = 0.0f;
161 return jint_cast(f) == jint_cast(ok);
162 }
163
164 bool is_one_float() {
165 jfloat f = as_jfloat();
166 return !g_isnan(f) && g_isfinite(f) && f == 1.0;
167 }
168
169 bool is_zero_double() {
170 jdouble d = as_jdouble();
171 jdouble ok = 0.0;
172 return jlong_cast(d) == jlong_cast(ok);
173 }
174
175 bool is_one_double() {
176 jdouble d = as_jdouble();
177 return !g_isnan(d) && g_isfinite(d) && d == 1.0;
178 }
179 };
180
181
182 //---------------------LIR Operand descriptor------------------------------------
183 //
184 // The class LIR_Opr represents a LIR instruction operand;
185 // it can be a register (ALU/FPU), stack location or a constant;
186 // Constants and addresses are represented as resource area allocated
187 // structures (see above), and pointers are stored in the _value field (cast to
188 // an intptr_t).
189 // Registers and stack locations are represented inline as integers.
190 // (see value function).
191
192 // Previously, this class was derived from CompilationResourceObj.
193 // However, deriving from any of the "Obj" types in allocation.hpp seems
194 // detrimental, since in some build modes it would add a vtable to this class,
195 // which make it no longer be a 1-word trivially-copyable wrapper object,
196 // which is the entire point of it.
197
198 class LIR_Opr {
199 public:
200 // value structure:
201 // data other-non-data opr-type opr-kind
202 // +-------------------+--------------+-------+-----+
203 // [max...............................|6 5 4 3|2 1 0]
204 // ^
205 // is_pointer bit
206 //
207 // lowest bit cleared, means it is a structure pointer
208 // we need 4 bits to represent types
209
210 private:
211 friend class LIR_OprFact;
212
213 intptr_t _value;
214 // Conversion
215 intptr_t value() const { return _value; }
216
217 bool check_value_mask(intptr_t mask, intptr_t masked_value) const {
218 return (value() & mask) == masked_value;
219 }
220
221 enum OprKind {
222 pointer_value = 0
223 , stack_value = 1
224 , cpu_register = 3
225 , fpu_register = 5
226 , illegal_value = 7
227 };
228
229 enum OprBits {
230 pointer_bits = 1
231 , kind_bits = 3
232 , type_bits = 4
233 , size_bits = 2
234 , destroys_bits = 1
235 , virtual_bits = 1
236 , is_xmm_bits = 1
237 , last_use_bits = 1
238 , non_data_bits = kind_bits + type_bits + size_bits + destroys_bits + virtual_bits
239 + is_xmm_bits + last_use_bits
240 , data_bits = BitsPerInt - non_data_bits
241 , reg_bits = data_bits / 2 // for two registers in one value encoding
242 };
243
244 enum OprShift : uintptr_t {
245 kind_shift = 0
246 , type_shift = kind_shift + kind_bits
247 , size_shift = type_shift + type_bits
248 , destroys_shift = size_shift + size_bits
249 , last_use_shift = destroys_shift + destroys_bits
250 , virtual_shift = last_use_shift + last_use_bits
251 , is_xmm_shift = virtual_shift + virtual_bits
252 , data_shift = is_xmm_shift + is_xmm_bits
253 , reg1_shift = data_shift
254 , reg2_shift = data_shift + reg_bits
255
256 };
257
258 enum OprSize {
259 single_size = 0 << size_shift
260 , double_size = 1 << size_shift
261 };
262
263 enum OprMask {
264 kind_mask = right_n_bits(kind_bits)
265 , type_mask = right_n_bits(type_bits) << type_shift
266 , size_mask = right_n_bits(size_bits) << size_shift
267 , last_use_mask = right_n_bits(last_use_bits) << last_use_shift
268 , virtual_mask = right_n_bits(virtual_bits) << virtual_shift
269 , is_xmm_mask = right_n_bits(is_xmm_bits) << is_xmm_shift
270 , pointer_mask = right_n_bits(pointer_bits)
271 , lower_reg_mask = right_n_bits(reg_bits)
272 , no_type_mask = (int)(~(type_mask | last_use_mask))
273 };
274
275 uint32_t data() const { return (uint32_t)value() >> data_shift; }
276 int lo_reg_half() const { return data() & lower_reg_mask; }
277 int hi_reg_half() const { return (data() >> reg_bits) & lower_reg_mask; }
278 OprKind kind_field() const { return (OprKind)(value() & kind_mask); }
279 OprSize size_field() const { return (OprSize)(value() & size_mask); }
280
281 static char type_char(BasicType t);
282
283 public:
284 LIR_Opr() : _value(0) {}
285 LIR_Opr(intptr_t val) : _value(val) {}
286 LIR_Opr(LIR_OprPtr *val) : _value(reinterpret_cast<intptr_t>(val)) {}
287 bool operator==(const LIR_Opr &other) const { return _value == other._value; }
288 bool operator!=(const LIR_Opr &other) const { return _value != other._value; }
289 explicit operator bool() const { return _value != 0; }
290
291 // UGLY HACK: make this value object look like a pointer (to itself). This
292 // operator overload should be removed, and all callers updated from
293 // `opr->fn()` to `opr.fn()`.
294 const LIR_Opr* operator->() const { return this; }
295 LIR_Opr* operator->() { return this; }
296
297 enum {
298 vreg_base = ConcreteRegisterImpl::number_of_registers,
299 data_max = (1 << data_bits) - 1, // max unsigned value for data bit field
300 vreg_limit = 10000, // choose a reasonable limit,
301 vreg_max = MIN2(vreg_limit, data_max) // and make sure if fits in the bit field
302 };
303
304 static inline LIR_Opr illegalOpr();
305 static inline LIR_Opr nullOpr();
306
307 enum OprType {
308 unknown_type = 0 << type_shift // means: not set (catch uninitialized types)
309 , int_type = 1 << type_shift
310 , long_type = 2 << type_shift
311 , object_type = 3 << type_shift
312 , address_type = 4 << type_shift
313 , float_type = 5 << type_shift
314 , double_type = 6 << type_shift
315 , metadata_type = 7 << type_shift
316 };
317 friend OprType as_OprType(BasicType t);
318 friend BasicType as_BasicType(OprType t);
319
320 OprType type_field_valid() const { assert(is_register() || is_stack(), "should not be called otherwise"); return (OprType)(value() & type_mask); }
321 OprType type_field() const { return is_illegal() ? unknown_type : (OprType)(value() & type_mask); }
322
323 static OprSize size_for(BasicType t) {
324 switch (t) {
325 case T_LONG:
326 case T_DOUBLE:
327 return double_size;
328 break;
329
330 case T_FLOAT:
331 case T_BOOLEAN:
332 case T_CHAR:
333 case T_BYTE:
334 case T_SHORT:
335 case T_INT:
336 case T_ADDRESS:
337 case T_OBJECT:
338 case T_ARRAY:
339 case T_METADATA:
340 return single_size;
341 break;
342
343 default:
344 ShouldNotReachHere();
345 return single_size;
346 }
347 }
348
349
350 void validate_type() const PRODUCT_RETURN;
351
352 BasicType type() const {
353 if (is_pointer()) {
354 return pointer()->type();
355 }
356 return as_BasicType(type_field());
357 }
358
359
360 ValueType* value_type() const { return as_ValueType(type()); }
361
362 char type_char() const { return type_char((is_pointer()) ? pointer()->type() : type()); }
363
364 bool is_equal(LIR_Opr opr) const { return *this == opr; }
365 // checks whether types are same
366 bool is_same_type(LIR_Opr opr) const {
367 assert(type_field() != unknown_type &&
368 opr->type_field() != unknown_type, "shouldn't see unknown_type");
369 return type_field() == opr->type_field();
370 }
371 bool is_same_register(LIR_Opr opr) {
372 return (is_register() && opr->is_register() &&
373 kind_field() == opr->kind_field() &&
374 (value() & no_type_mask) == (opr->value() & no_type_mask));
375 }
376
377 bool is_pointer() const { return check_value_mask(pointer_mask, pointer_value); }
378 bool is_illegal() const { return kind_field() == illegal_value; }
379 bool is_valid() const { return kind_field() != illegal_value; }
380
381 bool is_register() const { return is_cpu_register() || is_fpu_register(); }
382 bool is_virtual() const { return is_virtual_cpu() || is_virtual_fpu(); }
383
384 bool is_constant() const { return is_pointer() && pointer()->as_constant() != nullptr; }
385 bool is_address() const { return is_pointer() && pointer()->as_address() != nullptr; }
386
387 bool is_float_kind() const { return is_pointer() ? pointer()->is_float_kind() : (kind_field() == fpu_register); }
388 bool is_oop() const;
389
390 // semantic for fpu- and xmm-registers:
391 // * is_float and is_double return true for xmm_registers
392 // (so is_single_fpu and is_single_xmm are true)
393 // * So you must always check for is_???_xmm prior to is_???_fpu to
394 // distinguish between fpu- and xmm-registers
395
396 bool is_stack() const { validate_type(); return check_value_mask(kind_mask, stack_value); }
397 bool is_single_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | single_size); }
398 bool is_double_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | double_size); }
399
400 bool is_cpu_register() const { validate_type(); return check_value_mask(kind_mask, cpu_register); }
401 bool is_virtual_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register | virtual_mask); }
402 bool is_fixed_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register); }
403 bool is_single_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | single_size); }
404 bool is_double_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | double_size); }
405
406 bool is_fpu_register() const { validate_type(); return check_value_mask(kind_mask, fpu_register); }
407 bool is_virtual_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register | virtual_mask); }
408 bool is_fixed_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register); }
409 bool is_single_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | single_size); }
410 bool is_double_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | double_size); }
411
412 bool is_xmm_register() const { validate_type(); return check_value_mask(kind_mask | is_xmm_mask, fpu_register | is_xmm_mask); }
413 bool is_single_xmm() const { validate_type(); return check_value_mask(kind_mask | size_mask | is_xmm_mask, fpu_register | single_size | is_xmm_mask); }
414 bool is_double_xmm() const { validate_type(); return check_value_mask(kind_mask | size_mask | is_xmm_mask, fpu_register | double_size | is_xmm_mask); }
415
416 // fast accessor functions for special bits that do not work for pointers
417 // (in this functions, the check for is_pointer() is omitted)
418 bool is_single_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, single_size); }
419 bool is_double_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, double_size); }
420 bool is_virtual_register() const { assert(is_register(), "type check"); return check_value_mask(virtual_mask, virtual_mask); }
421 bool is_oop_register() const { assert(is_register() || is_stack(), "type check"); return type_field_valid() == object_type; }
422 BasicType type_register() const { assert(is_register() || is_stack(), "type check"); return as_BasicType(type_field_valid()); }
423
424 bool is_last_use() const { assert(is_register(), "only works for registers"); return (value() & last_use_mask) != 0; }
425 LIR_Opr make_last_use() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | last_use_mask); }
426
427
428 int single_stack_ix() const { assert(is_single_stack() && !is_virtual(), "type check"); return (int)data(); }
429 int double_stack_ix() const { assert(is_double_stack() && !is_virtual(), "type check"); return (int)data(); }
430 RegNr cpu_regnr() const { assert(is_single_cpu() && !is_virtual(), "type check"); return (RegNr)data(); }
431 RegNr cpu_regnrLo() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
432 RegNr cpu_regnrHi() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
433 RegNr fpu_regnr() const { assert(is_single_fpu() && !is_virtual(), "type check"); return (RegNr)data(); }
434 RegNr fpu_regnrLo() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
435 RegNr fpu_regnrHi() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
436 RegNr xmm_regnr() const { assert(is_single_xmm() && !is_virtual(), "type check"); return (RegNr)data(); }
437 RegNr xmm_regnrLo() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
438 RegNr xmm_regnrHi() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
439 int vreg_number() const { assert(is_virtual(), "type check"); return (RegNr)data(); }
440
441 LIR_OprPtr* pointer() const { assert(_value != 0 && is_pointer(), "nullness and type check"); return (LIR_OprPtr*)_value; }
442 LIR_Const* as_constant_ptr() const { return pointer()->as_constant(); }
443 LIR_Address* as_address_ptr() const { return pointer()->as_address(); }
444
445 Register as_register() const;
446 Register as_register_lo() const;
447 Register as_register_hi() const;
448
449 Register as_pointer_register() {
450 #ifdef _LP64
451 if (is_double_cpu()) {
452 assert(as_register_lo() == as_register_hi(), "should be a single register");
453 return as_register_lo();
454 }
455 #endif
456 return as_register();
457 }
458
459 FloatRegister as_float_reg () const;
460 FloatRegister as_double_reg () const;
461 #ifdef X86
462 XMMRegister as_xmm_float_reg () const;
463 XMMRegister as_xmm_double_reg() const;
464 // for compatibility with RInfo
465 int fpu() const { return lo_reg_half(); }
466 #endif
467
468 jint as_jint() const { return as_constant_ptr()->as_jint(); }
469 jlong as_jlong() const { return as_constant_ptr()->as_jlong(); }
470 jfloat as_jfloat() const { return as_constant_ptr()->as_jfloat(); }
471 jdouble as_jdouble() const { return as_constant_ptr()->as_jdouble(); }
472 jobject as_jobject() const { return as_constant_ptr()->as_jobject(); }
473
474 void print() const PRODUCT_RETURN;
475 void print(outputStream* out) const PRODUCT_RETURN;
476 };
477
478 inline LIR_Opr::OprType as_OprType(BasicType type) {
479 switch (type) {
480 case T_INT: return LIR_Opr::int_type;
481 case T_LONG: return LIR_Opr::long_type;
482 case T_FLOAT: return LIR_Opr::float_type;
483 case T_DOUBLE: return LIR_Opr::double_type;
484 case T_OBJECT:
485 case T_ARRAY: return LIR_Opr::object_type;
486 case T_ADDRESS: return LIR_Opr::address_type;
487 case T_METADATA: return LIR_Opr::metadata_type;
488 case T_ILLEGAL: // fall through
489 default: ShouldNotReachHere(); return LIR_Opr::unknown_type;
490 }
491 }
492
493 inline BasicType as_BasicType(LIR_Opr::OprType t) {
494 switch (t) {
495 case LIR_Opr::int_type: return T_INT;
496 case LIR_Opr::long_type: return T_LONG;
497 case LIR_Opr::float_type: return T_FLOAT;
498 case LIR_Opr::double_type: return T_DOUBLE;
499 case LIR_Opr::object_type: return T_OBJECT;
500 case LIR_Opr::address_type: return T_ADDRESS;
501 case LIR_Opr::metadata_type:return T_METADATA;
502 case LIR_Opr::unknown_type: // fall through
503 default: ShouldNotReachHere(); return T_ILLEGAL;
504 }
505 }
506
507
508 // LIR_Address
509 class LIR_Address: public LIR_OprPtr {
510 friend class LIR_OpVisitState;
511
512 public:
513 // NOTE: currently these must be the log2 of the scale factor (and
514 // must also be equivalent to the ScaleFactor enum in
515 // assembler_i486.hpp)
516 enum Scale {
517 times_1 = 0,
518 times_2 = 1,
519 times_4 = 2,
520 times_8 = 3
521 };
522
523 private:
524 LIR_Opr _base;
525 LIR_Opr _index;
526 intx _disp;
527 Scale _scale;
528 BasicType _type;
529
530 public:
531 LIR_Address(LIR_Opr base, LIR_Opr index, BasicType type):
532 _base(base)
533 , _index(index)
534 , _disp(0)
535 , _scale(times_1)
536 , _type(type) { verify(); }
537
538 LIR_Address(LIR_Opr base, intx disp, BasicType type):
539 _base(base)
540 , _index(LIR_Opr::illegalOpr())
541 , _disp(disp)
542 , _scale(times_1)
543 , _type(type) { verify(); }
544
545 LIR_Address(LIR_Opr base, BasicType type):
546 _base(base)
547 , _index(LIR_Opr::illegalOpr())
548 , _disp(0)
549 , _scale(times_1)
550 , _type(type) { verify(); }
551
552 LIR_Address(LIR_Opr base, LIR_Opr index, intx disp, BasicType type):
553 _base(base)
554 , _index(index)
555 , _disp(disp)
556 , _scale(times_1)
557 , _type(type) { verify(); }
558
559 LIR_Address(LIR_Opr base, LIR_Opr index, Scale scale, intx disp, BasicType type):
560 _base(base)
561 , _index(index)
562 , _disp(disp)
563 , _scale(scale)
564 , _type(type) { verify(); }
565
566 LIR_Opr base() const { return _base; }
567 LIR_Opr index() const { return _index; }
568 Scale scale() const { return _scale; }
569 intx disp() const { return _disp; }
570
571 bool equals(LIR_Address* other) const { return base() == other->base() && index() == other->index() && disp() == other->disp() && scale() == other->scale(); }
572
573 virtual LIR_Address* as_address() { return this; }
574 virtual BasicType type() const { return _type; }
575 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
576
577 void verify() const PRODUCT_RETURN;
578
579 static Scale scale(BasicType type);
580 };
581
582
583 // operand factory
584 class LIR_OprFact: public AllStatic {
585 public:
586
587 static LIR_Opr illegalOpr;
588 static LIR_Opr nullOpr;
589
590 static LIR_Opr single_cpu(int reg) {
591 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
592 LIR_Opr::int_type |
593 LIR_Opr::cpu_register |
594 LIR_Opr::single_size);
595 }
596 static LIR_Opr single_cpu_oop(int reg) {
597 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
598 LIR_Opr::object_type |
599 LIR_Opr::cpu_register |
600 LIR_Opr::single_size);
601 }
602 static LIR_Opr single_cpu_address(int reg) {
603 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
604 LIR_Opr::address_type |
605 LIR_Opr::cpu_register |
606 LIR_Opr::single_size);
607 }
608 static LIR_Opr single_cpu_metadata(int reg) {
609 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
610 LIR_Opr::metadata_type |
611 LIR_Opr::cpu_register |
612 LIR_Opr::single_size);
613 }
614 static LIR_Opr double_cpu(int reg1, int reg2) {
615 LP64_ONLY(assert(reg1 == reg2, "must be identical"));
616 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) |
617 (reg2 << LIR_Opr::reg2_shift) |
618 LIR_Opr::long_type |
619 LIR_Opr::cpu_register |
620 LIR_Opr::double_size);
621 }
622
623 static LIR_Opr single_fpu(int reg) {
624 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
625 LIR_Opr::float_type |
626 LIR_Opr::fpu_register |
627 LIR_Opr::single_size);
628 }
629
630 // Platform dependent.
631 static LIR_Opr double_fpu(int reg1, int reg2 = -1 /*fnoreg*/);
632
633 #ifdef ARM32
634 static LIR_Opr single_softfp(int reg) {
635 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
636 LIR_Opr::float_type |
637 LIR_Opr::cpu_register |
638 LIR_Opr::single_size);
639 }
640 static LIR_Opr double_softfp(int reg1, int reg2) {
641 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) |
642 (reg2 << LIR_Opr::reg2_shift) |
643 LIR_Opr::double_type |
644 LIR_Opr::cpu_register |
645 LIR_Opr::double_size);
646 }
647 #endif // ARM32
648
649 #if defined(X86)
650 static LIR_Opr single_xmm(int reg) {
651 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
652 LIR_Opr::float_type |
653 LIR_Opr::fpu_register |
654 LIR_Opr::single_size |
655 LIR_Opr::is_xmm_mask);
656 }
657 static LIR_Opr double_xmm(int reg) {
658 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
659 (reg << LIR_Opr::reg2_shift) |
660 LIR_Opr::double_type |
661 LIR_Opr::fpu_register |
662 LIR_Opr::double_size |
663 LIR_Opr::is_xmm_mask);
664 }
665 #endif // X86
666
667 static LIR_Opr virtual_register(int index, BasicType type) {
668 if (index > LIR_Opr::vreg_max) {
669 // Running out of virtual registers. Caller should bailout.
670 return illegalOpr;
671 }
672
673 LIR_Opr res;
674 switch (type) {
675 case T_OBJECT: // fall through
676 case T_ARRAY:
677 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
678 LIR_Opr::object_type |
679 LIR_Opr::cpu_register |
680 LIR_Opr::single_size |
681 LIR_Opr::virtual_mask);
682 break;
683
684 case T_METADATA:
685 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
686 LIR_Opr::metadata_type|
687 LIR_Opr::cpu_register |
688 LIR_Opr::single_size |
689 LIR_Opr::virtual_mask);
690 break;
691
692 case T_INT:
693 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
694 LIR_Opr::int_type |
695 LIR_Opr::cpu_register |
696 LIR_Opr::single_size |
697 LIR_Opr::virtual_mask);
698 break;
699
700 case T_ADDRESS:
701 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
702 LIR_Opr::address_type |
703 LIR_Opr::cpu_register |
704 LIR_Opr::single_size |
705 LIR_Opr::virtual_mask);
706 break;
707
708 case T_LONG:
709 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
710 LIR_Opr::long_type |
711 LIR_Opr::cpu_register |
712 LIR_Opr::double_size |
713 LIR_Opr::virtual_mask);
714 break;
715
716 #ifdef __SOFTFP__
717 case T_FLOAT:
718 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
719 LIR_Opr::float_type |
720 LIR_Opr::cpu_register |
721 LIR_Opr::single_size |
722 LIR_Opr::virtual_mask);
723 break;
724 case T_DOUBLE:
725 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
726 LIR_Opr::double_type |
727 LIR_Opr::cpu_register |
728 LIR_Opr::double_size |
729 LIR_Opr::virtual_mask);
730 break;
731 #else // __SOFTFP__
732 case T_FLOAT:
733 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
734 LIR_Opr::float_type |
735 LIR_Opr::fpu_register |
736 LIR_Opr::single_size |
737 LIR_Opr::virtual_mask);
738 break;
739
740 case
741 T_DOUBLE: res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
742 LIR_Opr::double_type |
743 LIR_Opr::fpu_register |
744 LIR_Opr::double_size |
745 LIR_Opr::virtual_mask);
746 break;
747 #endif // __SOFTFP__
748 default: ShouldNotReachHere(); res = illegalOpr;
749 }
750
751 #ifdef ASSERT
752 res->validate_type();
753 assert(res->vreg_number() == index, "conversion check");
754 assert(index >= LIR_Opr::vreg_base, "must start at vreg_base");
755
756 // old-style calculation; check if old and new method are equal
757 LIR_Opr::OprType t = as_OprType(type);
758 #ifdef __SOFTFP__
759 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
760 t |
761 LIR_Opr::cpu_register |
762 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask);
763 #else // __SOFTFP__
764 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | t |
765 ((type == T_FLOAT || type == T_DOUBLE) ? LIR_Opr::fpu_register : LIR_Opr::cpu_register) |
766 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask);
767 assert(res == old_res, "old and new method not equal");
768 #endif // __SOFTFP__
769 #endif // ASSERT
770
771 return res;
772 }
773
774 // 'index' is computed by FrameMap::local_stack_pos(index); do not use other parameters as
775 // the index is platform independent; a double stack using indices 2 and 3 has always
776 // index 2.
777 static LIR_Opr stack(int index, BasicType type) {
778 LIR_Opr res;
779 switch (type) {
780 case T_OBJECT: // fall through
781 case T_ARRAY:
782 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
783 LIR_Opr::object_type |
784 LIR_Opr::stack_value |
785 LIR_Opr::single_size);
786 break;
787
788 case T_METADATA:
789 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
790 LIR_Opr::metadata_type |
791 LIR_Opr::stack_value |
792 LIR_Opr::single_size);
793 break;
794 case T_INT:
795 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
796 LIR_Opr::int_type |
797 LIR_Opr::stack_value |
798 LIR_Opr::single_size);
799 break;
800
801 case T_ADDRESS:
802 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
803 LIR_Opr::address_type |
804 LIR_Opr::stack_value |
805 LIR_Opr::single_size);
806 break;
807
808 case T_LONG:
809 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
810 LIR_Opr::long_type |
811 LIR_Opr::stack_value |
812 LIR_Opr::double_size);
813 break;
814
815 case T_FLOAT:
816 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
817 LIR_Opr::float_type |
818 LIR_Opr::stack_value |
819 LIR_Opr::single_size);
820 break;
821 case T_DOUBLE:
822 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
823 LIR_Opr::double_type |
824 LIR_Opr::stack_value |
825 LIR_Opr::double_size);
826 break;
827
828 default: ShouldNotReachHere(); res = illegalOpr;
829 }
830
831 #ifdef ASSERT
832 assert(index >= 0, "index must be positive");
833 assert(index == (int)res->data(), "conversion check");
834
835 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
836 LIR_Opr::stack_value |
837 as_OprType(type) |
838 LIR_Opr::size_for(type));
839 assert(res == old_res, "old and new method not equal");
840 #endif
841
842 return res;
843 }
844
845 static LIR_Opr intConst(jint i) { return (LIR_Opr)(new LIR_Const(i)); }
846 static LIR_Opr longConst(jlong l) { return (LIR_Opr)(new LIR_Const(l)); }
847 static LIR_Opr floatConst(jfloat f) { return (LIR_Opr)(new LIR_Const(f)); }
848 static LIR_Opr doubleConst(jdouble d) { return (LIR_Opr)(new LIR_Const(d)); }
849 static LIR_Opr oopConst(jobject o) { return (LIR_Opr)(new LIR_Const(o)); }
850 static LIR_Opr address(LIR_Address* a) { return (LIR_Opr)a; }
851 static LIR_Opr intptrConst(void* p) { return (LIR_Opr)(new LIR_Const(p)); }
852 static LIR_Opr intptrConst(intptr_t v) { return (LIR_Opr)(new LIR_Const((void*)v)); }
853 static LIR_Opr illegal() { return (LIR_Opr)-1; }
854 static LIR_Opr addressConst(jint i) { return (LIR_Opr)(new LIR_Const(i, true)); }
855 static LIR_Opr metadataConst(Metadata* m) { return (LIR_Opr)(new LIR_Const(m)); }
856
857 static LIR_Opr value_type(ValueType* type);
858 };
859
860
861 //-------------------------------------------------------------------------------
862 // LIR Instructions
863 //-------------------------------------------------------------------------------
864 //
865 // Note:
866 // - every instruction has a result operand
867 // - every instruction has an CodeEmitInfo operand (can be revisited later)
868 // - every instruction has a LIR_OpCode operand
869 // - LIR_OpN, means an instruction that has N input operands
870 //
871 // class hierarchy:
872 //
873 class LIR_Op;
874 class LIR_Op0;
875 class LIR_OpLabel;
876 class LIR_Op1;
877 class LIR_OpBranch;
878 class LIR_OpConvert;
879 class LIR_OpAllocObj;
880 class LIR_OpReturn;
881 class LIR_Op2;
882 class LIR_OpDelay;
883 class LIR_Op3;
884 class LIR_OpAllocArray;
885 class LIR_Op4;
886 class LIR_OpCall;
887 class LIR_OpJavaCall;
888 class LIR_OpRTCall;
889 class LIR_OpArrayCopy;
890 class LIR_OpUpdateCRC32;
891 class LIR_OpLock;
892 class LIR_OpTypeCheck;
893 class LIR_OpFlattenedArrayCheck;
894 class LIR_OpNullFreeArrayCheck;
895 class LIR_OpSubstitutabilityCheck;
896 class LIR_OpCompareAndSwap;
897 class LIR_OpLoadKlass;
898 class LIR_OpProfileCall;
899 class LIR_OpProfileType;
900 class LIR_OpProfileInlineType;
901 #ifdef ASSERT
902 class LIR_OpAssert;
903 #endif
904
905 // LIR operation codes
906 enum LIR_Code {
907 lir_none
908 , begin_op0
909 , lir_label
910 , lir_nop
911 , lir_std_entry
912 , lir_osr_entry
913 , lir_breakpoint
914 , lir_rtcall
915 , lir_membar
916 , lir_membar_acquire
917 , lir_membar_release
918 , lir_membar_loadload
919 , lir_membar_storestore
920 , lir_membar_loadstore
921 , lir_membar_storeload
922 , lir_get_thread
923 , lir_on_spin_wait
924 , lir_check_orig_pc
925 , end_op0
926 , begin_op1
927 , lir_push
928 , lir_pop
929 , lir_null_check
930 , lir_return
931 , lir_leal
932 , lir_move
933 , lir_convert
934 , lir_alloc_object
935 , lir_monaddr
936 , lir_sqrt
937 , lir_abs
938 , lir_neg
939 , lir_f2hf
940 , lir_hf2f
941 , lir_safepoint
942 , lir_unwind
943 , lir_load_klass
944 , end_op1
945 , begin_op2
946 , lir_branch
947 , lir_cond_float_branch
948 , lir_cmp
949 , lir_cmp_l2i
950 , lir_ucmp_fd2i
951 , lir_cmp_fd2i
952 , lir_add
953 , lir_sub
954 , lir_mul
955 , lir_div
956 , lir_rem
957 , lir_logic_and
958 , lir_logic_or
959 , lir_logic_xor
960 , lir_shl
961 , lir_shr
962 , lir_ushr
963 , lir_alloc_array
964 , lir_throw
965 , lir_xadd
966 , lir_xchg
967 , end_op2
968 , begin_op3
969 , lir_idiv
970 , lir_irem
971 , lir_fmad
972 , lir_fmaf
973 , end_op3
974 , begin_op4
975 , lir_cmove
976 , end_op4
977 , begin_opJavaCall
978 , lir_static_call
979 , lir_optvirtual_call
980 , lir_icvirtual_call
981 , lir_dynamic_call
982 , end_opJavaCall
983 , begin_opArrayCopy
984 , lir_arraycopy
985 , end_opArrayCopy
986 , begin_opUpdateCRC32
987 , lir_updatecrc32
988 , end_opUpdateCRC32
989 , begin_opLock
990 , lir_lock
991 , lir_unlock
992 , end_opLock
993 , begin_delay_slot
994 , lir_delay_slot
995 , end_delay_slot
996 , begin_opTypeCheck
997 , lir_instanceof
998 , lir_checkcast
999 , lir_store_check
1000 , end_opTypeCheck
1001 , begin_opFlattenedArrayCheck
1002 , lir_flat_array_check
1003 , end_opFlattenedArrayCheck
1004 , begin_opNullFreeArrayCheck
1005 , lir_null_free_array_check
1006 , end_opNullFreeArrayCheck
1007 , begin_opSubstitutabilityCheck
1008 , lir_substitutability_check
1009 , end_opSubstitutabilityCheck
1010 , begin_opCompareAndSwap
1011 , lir_cas_long
1012 , lir_cas_obj
1013 , lir_cas_int
1014 , end_opCompareAndSwap
1015 , begin_opMDOProfile
1016 , lir_profile_call
1017 , lir_profile_type
1018 , lir_profile_inline_type
1019 , end_opMDOProfile
1020 , begin_opAssert
1021 , lir_assert
1022 , end_opAssert
1023 #if INCLUDE_ZGC
1024 , begin_opXLoadBarrierTest
1025 , lir_xloadbarrier_test
1026 , end_opXLoadBarrierTest
1027 #endif
1028 };
1029
1030
1031 enum LIR_Condition {
1032 lir_cond_equal
1033 , lir_cond_notEqual
1034 , lir_cond_less
1035 , lir_cond_lessEqual
1036 , lir_cond_greaterEqual
1037 , lir_cond_greater
1038 , lir_cond_belowEqual
1039 , lir_cond_aboveEqual
1040 , lir_cond_always
1041 , lir_cond_unknown = -1
1042 };
1043
1044
1045 enum LIR_PatchCode {
1046 lir_patch_none,
1047 lir_patch_low,
1048 lir_patch_high,
1049 lir_patch_normal
1050 };
1051
1052
1053 enum LIR_MoveKind {
1054 lir_move_normal,
1055 lir_move_volatile,
1056 lir_move_wide,
1057 lir_move_max_flag
1058 };
1059
1060
1061 // --------------------------------------------------
1062 // LIR_Op
1063 // --------------------------------------------------
1064 class LIR_Op: public CompilationResourceObj {
1065 friend class LIR_OpVisitState;
1066
1067 #ifdef ASSERT
1068 private:
1069 const char * _file;
1070 int _line;
1071 #endif
1072
1073 protected:
1074 LIR_Opr _result;
1075 unsigned short _code;
1076 unsigned short _flags;
1077 CodeEmitInfo* _info;
1078 int _id; // value id for register allocation
1079 Instruction* _source; // for debugging
1080
1081 static void print_condition(outputStream* out, LIR_Condition cond) PRODUCT_RETURN;
1082
1083 protected:
1084 static bool is_in_range(LIR_Code test, LIR_Code start, LIR_Code end) { return start < test && test < end; }
1085
1086 public:
1087 LIR_Op()
1088 :
1089 #ifdef ASSERT
1090 _file(nullptr)
1091 , _line(0),
1092 #endif
1093 _result(LIR_OprFact::illegalOpr)
1094 , _code(lir_none)
1095 , _flags(0)
1096 , _info(nullptr)
1097 , _id(-1)
1098 , _source(nullptr) {}
1099
1100 LIR_Op(LIR_Code code, LIR_Opr result, CodeEmitInfo* info)
1101 :
1102 #ifdef ASSERT
1103 _file(nullptr)
1104 , _line(0),
1105 #endif
1106 _result(result)
1107 , _code(code)
1108 , _flags(0)
1109 , _info(info)
1110 , _id(-1)
1111 , _source(nullptr) {}
1112
1113 CodeEmitInfo* info() const { return _info; }
1114 LIR_Code code() const { return (LIR_Code)_code; }
1115 LIR_Opr result_opr() const { return _result; }
1116 void set_result_opr(LIR_Opr opr) { _result = opr; }
1117
1118 #ifdef ASSERT
1119 void set_file_and_line(const char * file, int line) {
1120 _file = file;
1121 _line = line;
1122 }
1123 #endif
1124
1125 virtual const char * name() const PRODUCT_RETURN_NULL;
1126 virtual void visit(LIR_OpVisitState* state);
1127
1128 int id() const { return _id; }
1129 void set_id(int id) { _id = id; }
1130
1131 Instruction* source() const { return _source; }
1132 void set_source(Instruction* ins) { _source = ins; }
1133
1134 virtual void emit_code(LIR_Assembler* masm) = 0;
1135 virtual void print_instr(outputStream* out) const = 0;
1136 virtual void print_on(outputStream* st) const PRODUCT_RETURN;
1137
1138 virtual bool is_patching() { return false; }
1139 virtual LIR_OpCall* as_OpCall() { return nullptr; }
1140 virtual LIR_OpJavaCall* as_OpJavaCall() { return nullptr; }
1141 virtual LIR_OpLabel* as_OpLabel() { return nullptr; }
1142 virtual LIR_OpDelay* as_OpDelay() { return nullptr; }
1143 virtual LIR_OpLock* as_OpLock() { return nullptr; }
1144 virtual LIR_OpAllocArray* as_OpAllocArray() { return nullptr; }
1145 virtual LIR_OpAllocObj* as_OpAllocObj() { return nullptr; }
1146 virtual LIR_OpBranch* as_OpBranch() { return nullptr; }
1147 virtual LIR_OpReturn* as_OpReturn() { return nullptr; }
1148 virtual LIR_OpRTCall* as_OpRTCall() { return nullptr; }
1149 virtual LIR_OpConvert* as_OpConvert() { return nullptr; }
1150 virtual LIR_Op0* as_Op0() { return nullptr; }
1151 virtual LIR_Op1* as_Op1() { return nullptr; }
1152 virtual LIR_Op2* as_Op2() { return nullptr; }
1153 virtual LIR_Op3* as_Op3() { return nullptr; }
1154 virtual LIR_Op4* as_Op4() { return nullptr; }
1155 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return nullptr; }
1156 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return nullptr; }
1157 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return nullptr; }
1158 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return nullptr; }
1159 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return nullptr; }
1160 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return nullptr; }
1161 virtual LIR_OpCompareAndSwap* as_OpCompareAndSwap() { return nullptr; }
1162 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return nullptr; }
1163 virtual LIR_OpProfileCall* as_OpProfileCall() { return nullptr; }
1164 virtual LIR_OpProfileType* as_OpProfileType() { return nullptr; }
1165 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return nullptr; }
1166 #ifdef ASSERT
1167 virtual LIR_OpAssert* as_OpAssert() { return nullptr; }
1168 #endif
1169
1170 virtual void verify() const {}
1171 };
1172
1173 // for calls
1174 class LIR_OpCall: public LIR_Op {
1175 friend class LIR_OpVisitState;
1176
1177 protected:
1178 address _addr;
1179 LIR_OprList* _arguments;
1180 protected:
1181 LIR_OpCall(LIR_Code code, address addr, LIR_Opr result,
1182 LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1183 : LIR_Op(code, result, info)
1184 , _addr(addr)
1185 , _arguments(arguments) {}
1186
1187 public:
1188 address addr() const { return _addr; }
1189 const LIR_OprList* arguments() const { return _arguments; }
1190 virtual LIR_OpCall* as_OpCall() { return this; }
1191 };
1192
1193
1194 // --------------------------------------------------
1195 // LIR_OpJavaCall
1196 // --------------------------------------------------
1197 class LIR_OpJavaCall: public LIR_OpCall {
1198 friend class LIR_OpVisitState;
1199
1200 private:
1201 ciMethod* _method;
1202 LIR_Opr _receiver;
1203 LIR_Opr _method_handle_invoke_SP_save_opr; // Used in LIR_OpVisitState::visit to store the reference to FrameMap::method_handle_invoke_SP_save_opr.
1204
1205 public:
1206 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1207 LIR_Opr receiver, LIR_Opr result,
1208 address addr, LIR_OprList* arguments,
1209 CodeEmitInfo* info)
1210 : LIR_OpCall(code, addr, result, arguments, info)
1211 , _method(method)
1212 , _receiver(receiver)
1213 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1214 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1215
1216 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1217 LIR_Opr receiver, LIR_Opr result, intptr_t vtable_offset,
1218 LIR_OprList* arguments, CodeEmitInfo* info)
1219 : LIR_OpCall(code, (address)vtable_offset, result, arguments, info)
1220 , _method(method)
1221 , _receiver(receiver)
1222 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1223 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1224
1225 LIR_Opr receiver() const { return _receiver; }
1226 ciMethod* method() const { return _method; }
1227
1228 // JSR 292 support.
1229 bool is_invokedynamic() const { return code() == lir_dynamic_call; }
1230 bool is_method_handle_invoke() const {
1231 return method()->is_compiled_lambda_form() || // Java-generated lambda form
1232 method()->is_method_handle_intrinsic(); // JVM-generated MH intrinsic
1233 }
1234
1235 virtual void emit_code(LIR_Assembler* masm);
1236 virtual LIR_OpJavaCall* as_OpJavaCall() { return this; }
1237 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1238
1239 bool maybe_return_as_fields(ciInlineKlass** vk = nullptr) const;
1240 };
1241
1242 // --------------------------------------------------
1243 // LIR_OpLabel
1244 // --------------------------------------------------
1245 // Location where a branch can continue
1246 class LIR_OpLabel: public LIR_Op {
1247 friend class LIR_OpVisitState;
1248
1249 private:
1250 Label* _label;
1251 public:
1252 LIR_OpLabel(Label* lbl)
1253 : LIR_Op(lir_label, LIR_OprFact::illegalOpr, nullptr)
1254 , _label(lbl) {}
1255 Label* label() const { return _label; }
1256
1257 virtual void emit_code(LIR_Assembler* masm);
1258 virtual LIR_OpLabel* as_OpLabel() { return this; }
1259 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1260 };
1261
1262 // LIR_OpArrayCopy
1263 class LIR_OpArrayCopy: public LIR_Op {
1264 friend class LIR_OpVisitState;
1265
1266 private:
1267 ArrayCopyStub* _stub;
1268 LIR_Opr _src;
1269 LIR_Opr _src_pos;
1270 LIR_Opr _dst;
1271 LIR_Opr _dst_pos;
1272 LIR_Opr _length;
1273 LIR_Opr _tmp;
1274 ciArrayKlass* _expected_type;
1275 int _flags;
1276
1277 public:
1278 enum Flags {
1279 src_null_check = 1 << 0,
1280 dst_null_check = 1 << 1,
1281 src_pos_positive_check = 1 << 2,
1282 dst_pos_positive_check = 1 << 3,
1283 length_positive_check = 1 << 4,
1284 src_range_check = 1 << 5,
1285 dst_range_check = 1 << 6,
1286 type_check = 1 << 7,
1287 overlapping = 1 << 8,
1288 unaligned = 1 << 9,
1289 src_objarray = 1 << 10,
1290 dst_objarray = 1 << 11,
1291 always_slow_path = 1 << 12,
1292 src_inlinetype_check = 1 << 13,
1293 dst_inlinetype_check = 1 << 14,
1294 all_flags = (1 << 15) - 1
1295 };
1296
1297 LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp,
1298 ciArrayKlass* expected_type, int flags, CodeEmitInfo* info);
1299
1300 LIR_Opr src() const { return _src; }
1301 LIR_Opr src_pos() const { return _src_pos; }
1302 LIR_Opr dst() const { return _dst; }
1303 LIR_Opr dst_pos() const { return _dst_pos; }
1304 LIR_Opr length() const { return _length; }
1305 LIR_Opr tmp() const { return _tmp; }
1306 int flags() const { return _flags; }
1307 ciArrayKlass* expected_type() const { return _expected_type; }
1308 ArrayCopyStub* stub() const { return _stub; }
1309 static int get_initial_copy_flags() { return LIR_OpArrayCopy::unaligned |
1310 LIR_OpArrayCopy::overlapping; }
1311
1312 virtual void emit_code(LIR_Assembler* masm);
1313 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return this; }
1314 void print_instr(outputStream* out) const PRODUCT_RETURN;
1315 };
1316
1317 // LIR_OpUpdateCRC32
1318 class LIR_OpUpdateCRC32: public LIR_Op {
1319 friend class LIR_OpVisitState;
1320
1321 private:
1322 LIR_Opr _crc;
1323 LIR_Opr _val;
1324
1325 public:
1326
1327 LIR_OpUpdateCRC32(LIR_Opr crc, LIR_Opr val, LIR_Opr res);
1328
1329 LIR_Opr crc() const { return _crc; }
1330 LIR_Opr val() const { return _val; }
1331
1332 virtual void emit_code(LIR_Assembler* masm);
1333 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return this; }
1334 void print_instr(outputStream* out) const PRODUCT_RETURN;
1335 };
1336
1337 // --------------------------------------------------
1338 // LIR_Op0
1339 // --------------------------------------------------
1340 class LIR_Op0: public LIR_Op {
1341 friend class LIR_OpVisitState;
1342
1343 public:
1344 LIR_Op0(LIR_Code code)
1345 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1346 LIR_Op0(LIR_Code code, LIR_Opr result, CodeEmitInfo* info = nullptr)
1347 : LIR_Op(code, result, info) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1348
1349 virtual void emit_code(LIR_Assembler* masm);
1350 virtual LIR_Op0* as_Op0() { return this; }
1351 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1352 };
1353
1354
1355 // --------------------------------------------------
1356 // LIR_Op1
1357 // --------------------------------------------------
1358
1359 class LIR_Op1: public LIR_Op {
1360 friend class LIR_OpVisitState;
1361
1362 protected:
1363 LIR_Opr _opr; // input operand
1364 LIR_Opr _tmp;
1365 BasicType _type; // Operand types
1366 LIR_PatchCode _patch; // only required with patchin (NEEDS_CLEANUP: do we want a special instruction for patching?)
1367
1368 static void print_patch_code(outputStream* out, LIR_PatchCode code);
1369
1370 void set_kind(LIR_MoveKind kind) {
1371 assert(code() == lir_move, "must be");
1372 _flags = kind;
1373 }
1374
1375 public:
1376 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)
1377 : LIR_Op(code, result, info)
1378 , _opr(opr)
1379 , _tmp(LIR_OprFact::illegalOpr)
1380 , _type(type)
1381 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1382
1383 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)
1384 : LIR_Op(code, result, info)
1385 , _opr(opr)
1386 , _tmp(tmp)
1387 , _type(type)
1388 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1389
1390 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, BasicType type, LIR_PatchCode patch, CodeEmitInfo* info, LIR_MoveKind kind)
1391 : LIR_Op(code, result, info)
1392 , _opr(opr)
1393 , _tmp(LIR_OprFact::illegalOpr)
1394 , _type(type)
1395 , _patch(patch) {
1396 assert(code == lir_move, "must be");
1397 set_kind(kind);
1398 }
1399
1400 LIR_Op1(LIR_Code code, LIR_Opr opr, CodeEmitInfo* info)
1401 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1402 , _opr(opr)
1403 , _tmp(LIR_OprFact::illegalOpr)
1404 , _type(T_ILLEGAL)
1405 , _patch(lir_patch_none) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1406
1407 LIR_Opr in_opr() const { return _opr; }
1408 LIR_Opr tmp_opr() const { return _tmp; }
1409 LIR_PatchCode patch_code() const { return _patch; }
1410 BasicType type() const { return _type; }
1411
1412 LIR_MoveKind move_kind() const {
1413 assert(code() == lir_move, "must be");
1414 return (LIR_MoveKind)_flags;
1415 }
1416
1417 virtual bool is_patching() { return _patch != lir_patch_none; }
1418 virtual void emit_code(LIR_Assembler* masm);
1419 virtual LIR_Op1* as_Op1() { return this; }
1420 virtual const char * name() const PRODUCT_RETURN_NULL;
1421
1422 void set_in_opr(LIR_Opr opr) { _opr = opr; }
1423
1424 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1425 virtual void verify() const;
1426 };
1427
1428
1429 // for runtime calls
1430 class LIR_OpRTCall: public LIR_OpCall {
1431 friend class LIR_OpVisitState;
1432
1433 private:
1434 LIR_Opr _tmp;
1435 public:
1436 LIR_OpRTCall(address addr, LIR_Opr tmp,
1437 LIR_Opr result, LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1438 : LIR_OpCall(lir_rtcall, addr, result, arguments, info)
1439 , _tmp(tmp) {}
1440
1441 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1442 virtual void emit_code(LIR_Assembler* masm);
1443 virtual LIR_OpRTCall* as_OpRTCall() { return this; }
1444
1445 LIR_Opr tmp() const { return _tmp; }
1446
1447 virtual void verify() const;
1448 };
1449
1450
1451
1452 class LIR_OpReturn: public LIR_Op1 {
1453 friend class LIR_OpVisitState;
1454
1455 private:
1456 C1SafepointPollStub* _stub;
1457
1458 public:
1459 LIR_OpReturn(LIR_Opr opr);
1460
1461 C1SafepointPollStub* stub() const { return _stub; }
1462 virtual LIR_OpReturn* as_OpReturn() { return this; }
1463 };
1464
1465 class ConversionStub;
1466
1467 class LIR_OpConvert: public LIR_Op1 {
1468 friend class LIR_OpVisitState;
1469
1470 private:
1471 Bytecodes::Code _bytecode;
1472 ConversionStub* _stub;
1473
1474 public:
1475 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub)
1476 : LIR_Op1(lir_convert, opr, result)
1477 , _bytecode(code)
1478 , _stub(stub) {}
1479
1480 Bytecodes::Code bytecode() const { return _bytecode; }
1481 ConversionStub* stub() const { return _stub; }
1482
1483 virtual void emit_code(LIR_Assembler* masm);
1484 virtual LIR_OpConvert* as_OpConvert() { return this; }
1485 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1486
1487 static void print_bytecode(outputStream* out, Bytecodes::Code code) PRODUCT_RETURN;
1488 };
1489
1490
1491 // LIR_OpAllocObj
1492 class LIR_OpAllocObj : public LIR_Op1 {
1493 friend class LIR_OpVisitState;
1494
1495 private:
1496 LIR_Opr _tmp1;
1497 LIR_Opr _tmp2;
1498 LIR_Opr _tmp3;
1499 LIR_Opr _tmp4;
1500 int _hdr_size;
1501 int _obj_size;
1502 CodeStub* _stub;
1503 bool _init_check;
1504
1505 public:
1506 LIR_OpAllocObj(LIR_Opr klass, LIR_Opr result,
1507 LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1508 int hdr_size, int obj_size, bool init_check, CodeStub* stub)
1509 : LIR_Op1(lir_alloc_object, klass, result)
1510 , _tmp1(t1)
1511 , _tmp2(t2)
1512 , _tmp3(t3)
1513 , _tmp4(t4)
1514 , _hdr_size(hdr_size)
1515 , _obj_size(obj_size)
1516 , _stub(stub)
1517 , _init_check(init_check) { }
1518
1519 LIR_Opr klass() const { return in_opr(); }
1520 LIR_Opr obj() const { return result_opr(); }
1521 LIR_Opr tmp1() const { return _tmp1; }
1522 LIR_Opr tmp2() const { return _tmp2; }
1523 LIR_Opr tmp3() const { return _tmp3; }
1524 LIR_Opr tmp4() const { return _tmp4; }
1525 int header_size() const { return _hdr_size; }
1526 int object_size() const { return _obj_size; }
1527 bool init_check() const { return _init_check; }
1528 CodeStub* stub() const { return _stub; }
1529
1530 virtual void emit_code(LIR_Assembler* masm);
1531 virtual LIR_OpAllocObj * as_OpAllocObj () { return this; }
1532 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1533 };
1534
1535
1536 // LIR_OpTypeCheck
1537 class LIR_OpTypeCheck: public LIR_Op {
1538 friend class LIR_OpVisitState;
1539
1540 private:
1541 LIR_Opr _object;
1542 LIR_Opr _array;
1543 ciKlass* _klass;
1544 LIR_Opr _tmp1;
1545 LIR_Opr _tmp2;
1546 LIR_Opr _tmp3;
1547 CodeEmitInfo* _info_for_patch;
1548 CodeEmitInfo* _info_for_exception;
1549 CodeStub* _stub;
1550 ciMethod* _profiled_method;
1551 int _profiled_bci;
1552 bool _should_profile;
1553 bool _fast_check;
1554 bool _need_null_check;
1555
1556 public:
1557 LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
1558 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1559 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub, bool need_null_check = true);
1560 LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array,
1561 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception);
1562
1563 LIR_Opr object() const { return _object; }
1564 LIR_Opr array() const { assert(code() == lir_store_check, "not valid"); return _array; }
1565 LIR_Opr tmp1() const { return _tmp1; }
1566 LIR_Opr tmp2() const { return _tmp2; }
1567 LIR_Opr tmp3() const { return _tmp3; }
1568 ciKlass* klass() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _klass; }
1569 bool fast_check() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _fast_check; }
1570 CodeEmitInfo* info_for_patch() const { return _info_for_patch; }
1571 CodeEmitInfo* info_for_exception() const { return _info_for_exception; }
1572 CodeStub* stub() const { return _stub; }
1573
1574 // MethodData* profiling
1575 void set_profiled_method(ciMethod *method) { _profiled_method = method; }
1576 void set_profiled_bci(int bci) { _profiled_bci = bci; }
1577 void set_should_profile(bool b) { _should_profile = b; }
1578 ciMethod* profiled_method() const { return _profiled_method; }
1579 int profiled_bci() const { return _profiled_bci; }
1580 bool should_profile() const { return _should_profile; }
1581 bool need_null_check() const { return _need_null_check; }
1582 virtual bool is_patching() { return _info_for_patch != nullptr; }
1583 virtual void emit_code(LIR_Assembler* masm);
1584 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return this; }
1585 void print_instr(outputStream* out) const PRODUCT_RETURN;
1586 };
1587
1588 // LIR_OpFlattenedArrayCheck
1589 class LIR_OpFlattenedArrayCheck: public LIR_Op {
1590 friend class LIR_OpVisitState;
1591
1592 private:
1593 LIR_Opr _array;
1594 LIR_Opr _value;
1595 LIR_Opr _tmp;
1596 CodeStub* _stub;
1597 public:
1598 LIR_OpFlattenedArrayCheck(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
1599 LIR_Opr array() const { return _array; }
1600 LIR_Opr value() const { return _value; }
1601 LIR_Opr tmp() const { return _tmp; }
1602 CodeStub* stub() const { return _stub; }
1603
1604 virtual void emit_code(LIR_Assembler* masm);
1605 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return this; }
1606 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1607 };
1608
1609 // LIR_OpNullFreeArrayCheck
1610 class LIR_OpNullFreeArrayCheck: public LIR_Op {
1611 friend class LIR_OpVisitState;
1612
1613 private:
1614 LIR_Opr _array;
1615 LIR_Opr _tmp;
1616 public:
1617 LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp);
1618 LIR_Opr array() const { return _array; }
1619 LIR_Opr tmp() const { return _tmp; }
1620
1621 virtual void emit_code(LIR_Assembler* masm);
1622 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return this; }
1623 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1624 };
1625
1626 class LIR_OpSubstitutabilityCheck: public LIR_Op {
1627 friend class LIR_OpVisitState;
1628
1629 private:
1630 LIR_Opr _left;
1631 LIR_Opr _right;
1632 LIR_Opr _equal_result;
1633 LIR_Opr _not_equal_result;
1634 LIR_Opr _tmp1;
1635 LIR_Opr _tmp2;
1636 ciKlass* _left_klass;
1637 ciKlass* _right_klass;
1638 LIR_Opr _left_klass_op;
1639 LIR_Opr _right_klass_op;
1640 CodeStub* _stub;
1641 public:
1642 LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
1643 LIR_Opr tmp1, LIR_Opr tmp2,
1644 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
1645 CodeEmitInfo* info, CodeStub* stub);
1646
1647 LIR_Opr left() const { return _left; }
1648 LIR_Opr right() const { return _right; }
1649 LIR_Opr equal_result() const { return _equal_result; }
1650 LIR_Opr not_equal_result() const { return _not_equal_result; }
1651 LIR_Opr tmp1() const { return _tmp1; }
1652 LIR_Opr tmp2() const { return _tmp2; }
1653 ciKlass* left_klass() const { return _left_klass; }
1654 ciKlass* right_klass() const { return _right_klass; }
1655 LIR_Opr left_klass_op() const { return _left_klass_op; }
1656 LIR_Opr right_klass_op() const { return _right_klass_op; }
1657 CodeStub* stub() const { return _stub; }
1658
1659 virtual void emit_code(LIR_Assembler* masm);
1660 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return this; }
1661 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1662 };
1663
1664 // LIR_Op2
1665 class LIR_Op2: public LIR_Op {
1666 friend class LIR_OpVisitState;
1667
1668 protected:
1669 LIR_Opr _opr1;
1670 LIR_Opr _opr2;
1671 LIR_Opr _tmp1;
1672 LIR_Opr _tmp2;
1673 LIR_Opr _tmp3;
1674 LIR_Opr _tmp4;
1675 LIR_Opr _tmp5;
1676 LIR_Condition _condition;
1677 BasicType _type;
1678
1679 void verify() const;
1680
1681 public:
1682 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1683 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1684 , _opr1(opr1)
1685 , _opr2(opr2)
1686 , _tmp1(LIR_OprFact::illegalOpr)
1687 , _tmp2(LIR_OprFact::illegalOpr)
1688 , _tmp3(LIR_OprFact::illegalOpr)
1689 , _tmp4(LIR_OprFact::illegalOpr)
1690 , _tmp5(LIR_OprFact::illegalOpr)
1691 , _condition(condition)
1692 , _type(type) {
1693 assert(code == lir_cmp || code == lir_branch || code == lir_cond_float_branch || code == lir_assert, "code check");
1694 }
1695
1696 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type)
1697 : LIR_Op(code, result, nullptr)
1698 , _opr1(opr1)
1699 , _opr2(opr2)
1700 , _tmp1(LIR_OprFact::illegalOpr)
1701 , _tmp2(LIR_OprFact::illegalOpr)
1702 , _tmp3(LIR_OprFact::illegalOpr)
1703 , _tmp4(LIR_OprFact::illegalOpr)
1704 , _tmp5(LIR_OprFact::illegalOpr)
1705 , _condition(condition)
1706 , _type(type) {
1707 assert(code == lir_cmove, "code check");
1708 assert(type != T_ILLEGAL, "cmove should have type");
1709 }
1710
1711 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result = LIR_OprFact::illegalOpr,
1712 CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1713 : LIR_Op(code, result, info)
1714 , _opr1(opr1)
1715 , _opr2(opr2)
1716 , _tmp1(LIR_OprFact::illegalOpr)
1717 , _tmp2(LIR_OprFact::illegalOpr)
1718 , _tmp3(LIR_OprFact::illegalOpr)
1719 , _tmp4(LIR_OprFact::illegalOpr)
1720 , _tmp5(LIR_OprFact::illegalOpr)
1721 , _condition(lir_cond_unknown)
1722 , _type(type) {
1723 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1724 }
1725
1726 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, LIR_Opr tmp1, LIR_Opr tmp2 = LIR_OprFact::illegalOpr,
1727 LIR_Opr tmp3 = LIR_OprFact::illegalOpr, LIR_Opr tmp4 = LIR_OprFact::illegalOpr, LIR_Opr tmp5 = LIR_OprFact::illegalOpr)
1728 : LIR_Op(code, result, nullptr)
1729 , _opr1(opr1)
1730 , _opr2(opr2)
1731 , _tmp1(tmp1)
1732 , _tmp2(tmp2)
1733 , _tmp3(tmp3)
1734 , _tmp4(tmp4)
1735 , _tmp5(tmp5)
1736 , _condition(lir_cond_unknown)
1737 , _type(T_ILLEGAL) {
1738 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1739 }
1740
1741 LIR_Opr in_opr1() const { return _opr1; }
1742 LIR_Opr in_opr2() const { return _opr2; }
1743 BasicType type() const { return _type; }
1744 LIR_Opr tmp1_opr() const { return _tmp1; }
1745 LIR_Opr tmp2_opr() const { return _tmp2; }
1746 LIR_Opr tmp3_opr() const { return _tmp3; }
1747 LIR_Opr tmp4_opr() const { return _tmp4; }
1748 LIR_Opr tmp5_opr() const { return _tmp5; }
1749 LIR_Condition condition() const {
1750 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch || code() == lir_assert, "only valid for branch and assert"); return _condition;
1751 }
1752 void set_condition(LIR_Condition condition) {
1753 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch, "only valid for branch"); _condition = condition;
1754 }
1755
1756 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1757 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1758
1759 virtual void emit_code(LIR_Assembler* masm);
1760 virtual LIR_Op2* as_Op2() { return this; }
1761 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1762 };
1763
1764 class LIR_OpBranch: public LIR_Op2 {
1765 friend class LIR_OpVisitState;
1766
1767 private:
1768 Label* _label;
1769 BlockBegin* _block; // if this is a branch to a block, this is the block
1770 BlockBegin* _ublock; // if this is a float-branch, this is the unordered block
1771 CodeStub* _stub; // if this is a branch to a stub, this is the stub
1772
1773 public:
1774 LIR_OpBranch(LIR_Condition cond, Label* lbl)
1775 : LIR_Op2(lir_branch, cond, LIR_OprFact::illegalOpr, LIR_OprFact::illegalOpr, (CodeEmitInfo*) nullptr)
1776 , _label(lbl)
1777 , _block(nullptr)
1778 , _ublock(nullptr)
1779 , _stub(nullptr) { }
1780
1781 LIR_OpBranch(LIR_Condition cond, BlockBegin* block);
1782 LIR_OpBranch(LIR_Condition cond, CodeStub* stub);
1783
1784 // for unordered comparisons
1785 LIR_OpBranch(LIR_Condition cond, BlockBegin* block, BlockBegin* ublock);
1786
1787 LIR_Condition cond() const {
1788 return condition();
1789 }
1790
1791 void set_cond(LIR_Condition cond) {
1792 set_condition(cond);
1793 }
1794
1795 Label* label() const { return _label; }
1796 BlockBegin* block() const { return _block; }
1797 BlockBegin* ublock() const { return _ublock; }
1798 CodeStub* stub() const { return _stub; }
1799
1800 void change_block(BlockBegin* b);
1801 void change_ublock(BlockBegin* b);
1802 void negate_cond();
1803
1804 virtual void emit_code(LIR_Assembler* masm);
1805 virtual LIR_OpBranch* as_OpBranch() { return this; }
1806 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1807 };
1808
1809 class LIR_OpAllocArray : public LIR_Op {
1810 friend class LIR_OpVisitState;
1811
1812 private:
1813 LIR_Opr _klass;
1814 LIR_Opr _len;
1815 LIR_Opr _tmp1;
1816 LIR_Opr _tmp2;
1817 LIR_Opr _tmp3;
1818 LIR_Opr _tmp4;
1819 CodeStub* _stub;
1820 BasicType _type;
1821 bool _zero_array;
1822 bool _always_slow_path;
1823
1824 public:
1825 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)
1826 : LIR_Op(lir_alloc_array, result, nullptr)
1827 , _klass(klass)
1828 , _len(len)
1829 , _tmp1(t1)
1830 , _tmp2(t2)
1831 , _tmp3(t3)
1832 , _tmp4(t4)
1833 , _stub(stub)
1834 , _type(type)
1835 , _zero_array(zero_array)
1836 , _always_slow_path(always_slow_path) {}
1837
1838 LIR_Opr klass() const { return _klass; }
1839 LIR_Opr len() const { return _len; }
1840 LIR_Opr obj() const { return result_opr(); }
1841 LIR_Opr tmp1() const { return _tmp1; }
1842 LIR_Opr tmp2() const { return _tmp2; }
1843 LIR_Opr tmp3() const { return _tmp3; }
1844 LIR_Opr tmp4() const { return _tmp4; }
1845 BasicType type() const { return _type; }
1846 CodeStub* stub() const { return _stub; }
1847 bool zero_array() const { return _zero_array; }
1848 bool always_slow_path() const { return _always_slow_path; }
1849
1850 virtual void emit_code(LIR_Assembler* masm);
1851 virtual LIR_OpAllocArray * as_OpAllocArray () { return this; }
1852 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1853 };
1854
1855
1856 class LIR_Op3: public LIR_Op {
1857 friend class LIR_OpVisitState;
1858
1859 private:
1860 LIR_Opr _opr1;
1861 LIR_Opr _opr2;
1862 LIR_Opr _opr3;
1863 public:
1864 LIR_Op3(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr result, CodeEmitInfo* info = nullptr)
1865 : LIR_Op(code, result, info)
1866 , _opr1(opr1)
1867 , _opr2(opr2)
1868 , _opr3(opr3) { assert(is_in_range(code, begin_op3, end_op3), "code check"); }
1869 LIR_Opr in_opr1() const { return _opr1; }
1870 LIR_Opr in_opr2() const { return _opr2; }
1871 LIR_Opr in_opr3() const { return _opr3; }
1872
1873 virtual void emit_code(LIR_Assembler* masm);
1874 virtual LIR_Op3* as_Op3() { return this; }
1875 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1876 };
1877
1878 class LIR_Op4: public LIR_Op {
1879 friend class LIR_OpVisitState;
1880 protected:
1881 LIR_Opr _opr1;
1882 LIR_Opr _opr2;
1883 LIR_Opr _opr3;
1884 LIR_Opr _opr4;
1885 LIR_Opr _tmp1;
1886 LIR_Opr _tmp2;
1887 LIR_Opr _tmp3;
1888 LIR_Opr _tmp4;
1889 LIR_Opr _tmp5;
1890 LIR_Condition _condition;
1891 BasicType _type;
1892
1893 public:
1894 LIR_Op4(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr opr4,
1895 LIR_Opr result, BasicType type)
1896 : LIR_Op(code, result, nullptr)
1897 , _opr1(opr1)
1898 , _opr2(opr2)
1899 , _opr3(opr3)
1900 , _opr4(opr4)
1901 , _tmp1(LIR_OprFact::illegalOpr)
1902 , _tmp2(LIR_OprFact::illegalOpr)
1903 , _tmp3(LIR_OprFact::illegalOpr)
1904 , _tmp4(LIR_OprFact::illegalOpr)
1905 , _tmp5(LIR_OprFact::illegalOpr)
1906 , _condition(condition)
1907 , _type(type) {
1908 assert(code == lir_cmove, "code check");
1909 assert(type != T_ILLEGAL, "cmove should have type");
1910 }
1911
1912 LIR_Opr in_opr1() const { return _opr1; }
1913 LIR_Opr in_opr2() const { return _opr2; }
1914 LIR_Opr in_opr3() const { return _opr3; }
1915 LIR_Opr in_opr4() const { return _opr4; }
1916 BasicType type() const { return _type; }
1917 LIR_Opr tmp1_opr() const { return _tmp1; }
1918 LIR_Opr tmp2_opr() const { return _tmp2; }
1919 LIR_Opr tmp3_opr() const { return _tmp3; }
1920 LIR_Opr tmp4_opr() const { return _tmp4; }
1921 LIR_Opr tmp5_opr() const { return _tmp5; }
1922
1923 LIR_Condition condition() const { return _condition; }
1924 void set_condition(LIR_Condition condition) { _condition = condition; }
1925
1926 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1927 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1928 void set_in_opr3(LIR_Opr opr) { _opr3 = opr; }
1929 void set_in_opr4(LIR_Opr opr) { _opr4 = opr; }
1930 virtual void emit_code(LIR_Assembler* masm);
1931 virtual LIR_Op4* as_Op4() { return this; }
1932
1933 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1934 };
1935
1936 //--------------------------------
1937 class LabelObj: public CompilationResourceObj {
1938 private:
1939 Label _label;
1940 public:
1941 LabelObj() {}
1942 Label* label() { return &_label; }
1943 };
1944
1945
1946 class LIR_OpLock: public LIR_Op {
1947 friend class LIR_OpVisitState;
1948
1949 private:
1950 LIR_Opr _hdr;
1951 LIR_Opr _obj;
1952 LIR_Opr _lock;
1953 LIR_Opr _scratch;
1954 CodeStub* _stub;
1955 CodeStub* _throw_ie_stub;
1956 public:
1957 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)
1958 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1959 , _hdr(hdr)
1960 , _obj(obj)
1961 , _lock(lock)
1962 , _scratch(scratch)
1963 , _stub(stub)
1964 , _throw_ie_stub(throw_ie_stub) {}
1965
1966 LIR_Opr hdr_opr() const { return _hdr; }
1967 LIR_Opr obj_opr() const { return _obj; }
1968 LIR_Opr lock_opr() const { return _lock; }
1969 LIR_Opr scratch_opr() const { return _scratch; }
1970 CodeStub* stub() const { return _stub; }
1971 CodeStub* throw_ie_stub() const { return _throw_ie_stub; }
1972
1973 virtual void emit_code(LIR_Assembler* masm);
1974 virtual LIR_OpLock* as_OpLock() { return this; }
1975 void print_instr(outputStream* out) const PRODUCT_RETURN;
1976 };
1977
1978 class LIR_OpLoadKlass: public LIR_Op {
1979 friend class LIR_OpVisitState;
1980
1981 private:
1982 LIR_Opr _obj;
1983 public:
1984 LIR_OpLoadKlass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info)
1985 : LIR_Op(lir_load_klass, result, info)
1986 , _obj(obj)
1987 {}
1988
1989 LIR_Opr obj() const { return _obj; }
1990
1991 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return this; }
1992 virtual void emit_code(LIR_Assembler* masm);
1993 void print_instr(outputStream* out) const PRODUCT_RETURN;
1994 };
1995
1996 class LIR_OpDelay: public LIR_Op {
1997 friend class LIR_OpVisitState;
1998
1999 private:
2000 LIR_Op* _op;
2001
2002 public:
2003 LIR_OpDelay(LIR_Op* op, CodeEmitInfo* info):
2004 LIR_Op(lir_delay_slot, LIR_OprFact::illegalOpr, info),
2005 _op(op) {
2006 assert(op->code() == lir_nop, "should be filling with nops");
2007 }
2008 virtual void emit_code(LIR_Assembler* masm);
2009 virtual LIR_OpDelay* as_OpDelay() { return this; }
2010 void print_instr(outputStream* out) const PRODUCT_RETURN;
2011 LIR_Op* delay_op() const { return _op; }
2012 CodeEmitInfo* call_info() const { return info(); }
2013 };
2014
2015 #ifdef ASSERT
2016 // LIR_OpAssert
2017 class LIR_OpAssert : public LIR_Op2 {
2018 friend class LIR_OpVisitState;
2019
2020 private:
2021 const char* _msg;
2022 bool _halt;
2023
2024 public:
2025 LIR_OpAssert(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, const char* msg, bool halt)
2026 : LIR_Op2(lir_assert, condition, opr1, opr2)
2027 , _msg(msg)
2028 , _halt(halt) {
2029 }
2030
2031 const char* msg() const { return _msg; }
2032 bool halt() const { return _halt; }
2033
2034 virtual void emit_code(LIR_Assembler* masm);
2035 virtual LIR_OpAssert* as_OpAssert() { return this; }
2036 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2037 };
2038 #endif
2039
2040 // LIR_OpCompareAndSwap
2041 class LIR_OpCompareAndSwap : public LIR_Op {
2042 friend class LIR_OpVisitState;
2043
2044 private:
2045 LIR_Opr _addr;
2046 LIR_Opr _cmp_value;
2047 LIR_Opr _new_value;
2048 LIR_Opr _tmp1;
2049 LIR_Opr _tmp2;
2050
2051 public:
2052 LIR_OpCompareAndSwap(LIR_Code code, LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2053 LIR_Opr t1, LIR_Opr t2, LIR_Opr result)
2054 : LIR_Op(code, result, nullptr) // no result, no info
2055 , _addr(addr)
2056 , _cmp_value(cmp_value)
2057 , _new_value(new_value)
2058 , _tmp1(t1)
2059 , _tmp2(t2) { }
2060
2061 LIR_Opr addr() const { return _addr; }
2062 LIR_Opr cmp_value() const { return _cmp_value; }
2063 LIR_Opr new_value() const { return _new_value; }
2064 LIR_Opr tmp1() const { return _tmp1; }
2065 LIR_Opr tmp2() const { return _tmp2; }
2066
2067 virtual void emit_code(LIR_Assembler* masm);
2068 virtual LIR_OpCompareAndSwap * as_OpCompareAndSwap () { return this; }
2069 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2070 };
2071
2072 // LIR_OpProfileCall
2073 class LIR_OpProfileCall : public LIR_Op {
2074 friend class LIR_OpVisitState;
2075
2076 private:
2077 ciMethod* _profiled_method;
2078 int _profiled_bci;
2079 ciMethod* _profiled_callee;
2080 LIR_Opr _mdo;
2081 LIR_Opr _recv;
2082 LIR_Opr _tmp1;
2083 ciKlass* _known_holder;
2084
2085 public:
2086 // Destroys recv
2087 LIR_OpProfileCall(ciMethod* profiled_method, int profiled_bci, ciMethod* profiled_callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* known_holder)
2088 : LIR_Op(lir_profile_call, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2089 , _profiled_method(profiled_method)
2090 , _profiled_bci(profiled_bci)
2091 , _profiled_callee(profiled_callee)
2092 , _mdo(mdo)
2093 , _recv(recv)
2094 , _tmp1(t1)
2095 , _known_holder(known_holder) { }
2096
2097 ciMethod* profiled_method() const { return _profiled_method; }
2098 int profiled_bci() const { return _profiled_bci; }
2099 ciMethod* profiled_callee() const { return _profiled_callee; }
2100 LIR_Opr mdo() const { return _mdo; }
2101 LIR_Opr recv() const { return _recv; }
2102 LIR_Opr tmp1() const { return _tmp1; }
2103 ciKlass* known_holder() const { return _known_holder; }
2104
2105 virtual void emit_code(LIR_Assembler* masm);
2106 virtual LIR_OpProfileCall* as_OpProfileCall() { return this; }
2107 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2108 bool should_profile_receiver_type() const {
2109 bool callee_is_static = _profiled_callee->is_loaded() && _profiled_callee->is_static();
2110 bool callee_is_private = _profiled_callee->is_loaded() && _profiled_callee->is_private();
2111 Bytecodes::Code bc = _profiled_method->java_code_at_bci(_profiled_bci);
2112 bool call_is_virtual = (bc == Bytecodes::_invokevirtual && !callee_is_private) || bc == Bytecodes::_invokeinterface;
2113 return C1ProfileVirtualCalls && call_is_virtual && !callee_is_static;
2114 }
2115 };
2116
2117 // LIR_OpProfileType
2118 class LIR_OpProfileType : public LIR_Op {
2119 friend class LIR_OpVisitState;
2120
2121 private:
2122 LIR_Opr _mdp;
2123 LIR_Opr _obj;
2124 LIR_Opr _tmp;
2125 ciKlass* _exact_klass; // non null if we know the klass statically (no need to load it from _obj)
2126 intptr_t _current_klass; // what the profiling currently reports
2127 bool _not_null; // true if we know statically that _obj cannot be null
2128 bool _no_conflict; // true if we're profling parameters, _exact_klass is not null and we know
2129 // _exact_klass it the only possible type for this parameter in any context.
2130
2131 public:
2132 // Destroys recv
2133 LIR_OpProfileType(LIR_Opr mdp, LIR_Opr obj, ciKlass* exact_klass, intptr_t current_klass, LIR_Opr tmp, bool not_null, bool no_conflict)
2134 : LIR_Op(lir_profile_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2135 , _mdp(mdp)
2136 , _obj(obj)
2137 , _tmp(tmp)
2138 , _exact_klass(exact_klass)
2139 , _current_klass(current_klass)
2140 , _not_null(not_null)
2141 , _no_conflict(no_conflict) { }
2142
2143 LIR_Opr mdp() const { return _mdp; }
2144 LIR_Opr obj() const { return _obj; }
2145 LIR_Opr tmp() const { return _tmp; }
2146 ciKlass* exact_klass() const { return _exact_klass; }
2147 intptr_t current_klass() const { return _current_klass; }
2148 bool not_null() const { return _not_null; }
2149 bool no_conflict() const { return _no_conflict; }
2150
2151 virtual void emit_code(LIR_Assembler* masm);
2152 virtual LIR_OpProfileType* as_OpProfileType() { return this; }
2153 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2154 };
2155
2156 // LIR_OpProfileInlineType
2157 class LIR_OpProfileInlineType : public LIR_Op {
2158 friend class LIR_OpVisitState;
2159
2160 private:
2161 LIR_Opr _mdp;
2162 LIR_Opr _obj;
2163 int _flag;
2164 LIR_Opr _tmp;
2165 bool _not_null; // true if we know statically that _obj cannot be null
2166
2167 public:
2168 // Destroys recv
2169 LIR_OpProfileInlineType(LIR_Opr mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null)
2170 : LIR_Op(lir_profile_inline_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2171 , _mdp(mdp)
2172 , _obj(obj)
2173 , _flag(flag)
2174 , _tmp(tmp)
2175 , _not_null(not_null) { }
2176
2177 LIR_Opr mdp() const { return _mdp; }
2178 LIR_Opr obj() const { return _obj; }
2179 int flag() const { return _flag; }
2180 LIR_Opr tmp() const { return _tmp; }
2181 bool not_null() const { return _not_null; }
2182
2183 virtual void emit_code(LIR_Assembler* masm);
2184 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return this; }
2185 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2186 };
2187
2188 class LIR_InsertionBuffer;
2189
2190 //--------------------------------LIR_List---------------------------------------------------
2191 // Maintains a list of LIR instructions (one instance of LIR_List per basic block)
2192 // The LIR instructions are appended by the LIR_List class itself;
2193 //
2194 // Notes:
2195 // - all offsets are(should be) in bytes
2196 // - local positions are specified with an offset, with offset 0 being local 0
2197
2198 class LIR_List: public CompilationResourceObj {
2199 private:
2200 LIR_OpList _operations;
2201
2202 Compilation* _compilation;
2203 #ifndef PRODUCT
2204 BlockBegin* _block;
2205 #endif
2206 #ifdef ASSERT
2207 const char * _file;
2208 int _line;
2209 #endif
2210 #ifdef RISCV
2211 LIR_Opr _cmp_opr1;
2212 LIR_Opr _cmp_opr2;
2213 #endif
2214
2215 public:
2216 void append(LIR_Op* op) {
2217 if (op->source() == nullptr)
2218 op->set_source(_compilation->current_instruction());
2219 #ifndef PRODUCT
2220 if (PrintIRWithLIR) {
2221 _compilation->maybe_print_current_instruction();
2222 op->print(); tty->cr();
2223 }
2224 #endif // PRODUCT
2225
2226 #ifdef RISCV
2227 set_cmp_oprs(op);
2228 // lir_cmp set cmp oprs only on riscv
2229 if (op->code() == lir_cmp) return;
2230 #endif
2231
2232 _operations.append(op);
2233
2234 #ifdef ASSERT
2235 op->verify();
2236 op->set_file_and_line(_file, _line);
2237 _file = nullptr;
2238 _line = 0;
2239 #endif
2240 }
2241
2242 LIR_List(Compilation* compilation, BlockBegin* block = nullptr);
2243
2244 #ifdef ASSERT
2245 void set_file_and_line(const char * file, int line);
2246 #endif
2247
2248 #ifdef RISCV
2249 void set_cmp_oprs(LIR_Op* op);
2250 #endif
2251
2252 //---------- accessors ---------------
2253 LIR_OpList* instructions_list() { return &_operations; }
2254 int length() const { return _operations.length(); }
2255 LIR_Op* at(int i) const { return _operations.at(i); }
2256
2257 NOT_PRODUCT(BlockBegin* block() const { return _block; });
2258
2259 // insert LIR_Ops in buffer to right places in LIR_List
2260 void append(LIR_InsertionBuffer* buffer);
2261
2262 //---------- mutators ---------------
2263 void insert_before(int i, LIR_List* op_list) { _operations.insert_before(i, op_list->instructions_list()); }
2264 void insert_before(int i, LIR_Op* op) { _operations.insert_before(i, op); }
2265 void remove_at(int i) { _operations.remove_at(i); }
2266
2267 //---------- printing -------------
2268 void print_instructions() PRODUCT_RETURN;
2269
2270
2271 //---------- instructions -------------
2272 void call_opt_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2273 address dest, LIR_OprList* arguments,
2274 CodeEmitInfo* info) {
2275 append(new LIR_OpJavaCall(lir_optvirtual_call, method, receiver, result, dest, arguments, info));
2276 }
2277 void call_static(ciMethod* method, LIR_Opr result,
2278 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2279 append(new LIR_OpJavaCall(lir_static_call, method, LIR_OprFact::illegalOpr, result, dest, arguments, info));
2280 }
2281 void call_icvirtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2282 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2283 append(new LIR_OpJavaCall(lir_icvirtual_call, method, receiver, result, dest, arguments, info));
2284 }
2285 void call_dynamic(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2286 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2287 append(new LIR_OpJavaCall(lir_dynamic_call, method, receiver, result, dest, arguments, info));
2288 }
2289
2290 void get_thread(LIR_Opr result) { append(new LIR_Op0(lir_get_thread, result)); }
2291 void membar() { append(new LIR_Op0(lir_membar)); }
2292 void membar_acquire() { append(new LIR_Op0(lir_membar_acquire)); }
2293 void membar_release() { append(new LIR_Op0(lir_membar_release)); }
2294 void membar_loadload() { append(new LIR_Op0(lir_membar_loadload)); }
2295 void membar_storestore() { append(new LIR_Op0(lir_membar_storestore)); }
2296 void membar_loadstore() { append(new LIR_Op0(lir_membar_loadstore)); }
2297 void membar_storeload() { append(new LIR_Op0(lir_membar_storeload)); }
2298
2299 void nop() { append(new LIR_Op0(lir_nop)); }
2300
2301 void std_entry(LIR_Opr receiver) { append(new LIR_Op0(lir_std_entry, receiver)); }
2302 void osr_entry(LIR_Opr osrPointer) { append(new LIR_Op0(lir_osr_entry, osrPointer)); }
2303
2304 void on_spin_wait() { append(new LIR_Op0(lir_on_spin_wait)); }
2305
2306 void branch_destination(Label* lbl) { append(new LIR_OpLabel(lbl)); }
2307
2308 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)); }
2309
2310 // result is a stack location for old backend and vreg for UseLinearScan
2311 // stack_loc_temp is an illegal register for old backend
2312 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)); }
2313 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)); }
2314 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)); }
2315 void move_wide(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = nullptr) {
2316 if (UseCompressedOops) {
2317 append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info, lir_move_wide));
2318 } else {
2319 move(src, dst, info);
2320 }
2321 }
2322 void move_wide(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = nullptr) {
2323 if (UseCompressedOops) {
2324 append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info, lir_move_wide));
2325 } else {
2326 move(src, dst, info);
2327 }
2328 }
2329 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)); }
2330
2331 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)); }
2332 void oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info);
2333
2334 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)); }
2335 void klass2reg_patch(Metadata* o, LIR_Opr reg, CodeEmitInfo* info);
2336
2337 void safepoint(LIR_Opr tmp, CodeEmitInfo* info) { append(new LIR_Op1(lir_safepoint, tmp, info)); }
2338 void return_op(LIR_Opr result) { append(new LIR_OpReturn(result)); }
2339
2340 void convert(Bytecodes::Code code, LIR_Opr left, LIR_Opr dst, ConversionStub* stub = nullptr/*, bool is_32bit = false*/) { append(new LIR_OpConvert(code, left, dst, stub)); }
2341
2342 void logical_and (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_and, left, right, dst)); }
2343 void logical_or (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_or, left, right, dst)); }
2344 void logical_xor (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_xor, left, right, dst)); }
2345
2346 void null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null = false);
2347 void throw_exception(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2348 append(new LIR_Op2(lir_throw, exceptionPC, exceptionOop, LIR_OprFact::illegalOpr, info));
2349 }
2350 void unwind_exception(LIR_Opr exceptionOop) {
2351 append(new LIR_Op1(lir_unwind, exceptionOop));
2352 }
2353
2354 void push(LIR_Opr opr) { append(new LIR_Op1(lir_push, opr)); }
2355 void pop(LIR_Opr reg) { append(new LIR_Op1(lir_pop, reg)); }
2356
2357 void cmp(LIR_Condition condition, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info = nullptr) {
2358 append(new LIR_Op2(lir_cmp, condition, left, right, info));
2359 }
2360 void cmp(LIR_Condition condition, LIR_Opr left, int right, CodeEmitInfo* info = nullptr) {
2361 cmp(condition, left, LIR_OprFact::intConst(right), info);
2362 }
2363
2364 void cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info);
2365 void cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info);
2366
2367 void cmove(LIR_Condition condition, LIR_Opr src1, LIR_Opr src2, LIR_Opr dst, BasicType type,
2368 LIR_Opr cmp_opr1 = LIR_OprFact::illegalOpr, LIR_Opr cmp_opr2 = LIR_OprFact::illegalOpr) {
2369 append(new LIR_Op4(lir_cmove, condition, src1, src2, cmp_opr1, cmp_opr2, dst, type));
2370 }
2371
2372 void cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2373 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2374 void cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2375 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2376 void cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2377 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2378
2379 void abs (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_abs , from, to, tmp)); }
2380 void negate(LIR_Opr from, LIR_Opr to, LIR_Opr tmp = LIR_OprFact::illegalOpr) { append(new LIR_Op1(lir_neg, from, to, tmp)); }
2381 void sqrt(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_sqrt, from, to, tmp)); }
2382 void fmad(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmad, from, from1, from2, to)); }
2383 void fmaf(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmaf, from, from1, from2, to)); }
2384 void f2hf(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_f2hf, from, to, tmp)); }
2385 void hf2f(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_hf2f, from, to, tmp)); }
2386
2387 void add (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_add, left, right, res)); }
2388 void sub (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_sub, left, right, res, info)); }
2389 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_mul, left, right, res)); }
2390 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_mul, left, right, res, tmp)); }
2391 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_div, left, right, res, info)); }
2392 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_div, left, right, res, tmp)); }
2393 void rem (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_rem, left, right, res, info)); }
2394
2395 void volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2396 void volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2397
2398 void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2399
2400 void store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2401 void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2402 void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2403 void volatile_store_mem_reg(LIR_Opr src, LIR_Address* address, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2404 void volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2405
2406 void idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2407 void idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2408 void irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2409 void irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2410
2411 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);
2412 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);
2413
2414 // jump is an unconditional branch
2415 void jump(BlockBegin* block) {
2416 append(new LIR_OpBranch(lir_cond_always, block));
2417 }
2418 void jump(CodeStub* stub) {
2419 append(new LIR_OpBranch(lir_cond_always, stub));
2420 }
2421 void branch(LIR_Condition cond, Label* lbl) {
2422 append(new LIR_OpBranch(cond, lbl));
2423 }
2424 // Should not be used for fp comparisons
2425 void branch(LIR_Condition cond, BlockBegin* block) {
2426 append(new LIR_OpBranch(cond, block));
2427 }
2428 // Should not be used for fp comparisons
2429 void branch(LIR_Condition cond, CodeStub* stub) {
2430 append(new LIR_OpBranch(cond, stub));
2431 }
2432 // Should only be used for fp comparisons
2433 void branch(LIR_Condition cond, BlockBegin* block, BlockBegin* unordered) {
2434 append(new LIR_OpBranch(cond, block, unordered));
2435 }
2436
2437 void shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2438 void shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2439 void unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2440
2441 void shift_left(LIR_Opr value, int count, LIR_Opr dst) { shift_left(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2442 void shift_right(LIR_Opr value, int count, LIR_Opr dst) { shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2443 void unsigned_shift_right(LIR_Opr value, int count, LIR_Opr dst) { unsigned_shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2444
2445 void lcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_cmp_l2i, left, right, dst)); }
2446 void fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less);
2447
2448 void call_runtime_leaf(address routine, LIR_Opr tmp, LIR_Opr result, LIR_OprList* arguments) {
2449 append(new LIR_OpRTCall(routine, tmp, result, arguments));
2450 }
2451
2452 void call_runtime(address routine, LIR_Opr tmp, LIR_Opr result,
2453 LIR_OprList* arguments, CodeEmitInfo* info) {
2454 append(new LIR_OpRTCall(routine, tmp, result, arguments, info));
2455 }
2456
2457 void load_stack_address_monitor(int monitor_ix, LIR_Opr dst) { append(new LIR_Op1(lir_monaddr, LIR_OprFact::intConst(monitor_ix), dst)); }
2458 void unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub);
2459 void lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_ie_stub=nullptr);
2460
2461 void breakpoint() { append(new LIR_Op0(lir_breakpoint)); }
2462
2463 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)); }
2464
2465 void update_crc32(LIR_Opr crc, LIR_Opr val, LIR_Opr res) { append(new LIR_OpUpdateCRC32(crc, val, res)); }
2466
2467 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);
2468 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);
2469 void check_flat_array(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
2470 void check_null_free_array(LIR_Opr array, LIR_Opr tmp);
2471 void substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
2472 LIR_Opr tmp1, LIR_Opr tmp2,
2473 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
2474 CodeEmitInfo* info, CodeStub* stub);
2475
2476 void checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
2477 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
2478 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
2479 ciMethod* profiled_method, int profiled_bci, bool is_null_free);
2480 // MethodData* profiling
2481 void profile_call(ciMethod* method, int bci, ciMethod* callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* cha_klass) {
2482 append(new LIR_OpProfileCall(method, bci, callee, mdo, recv, t1, cha_klass));
2483 }
2484 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) {
2485 append(new LIR_OpProfileType(LIR_OprFact::address(mdp), obj, exact_klass, current_klass, tmp, not_null, no_conflict));
2486 }
2487 void profile_inline_type(LIR_Address* mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null) {
2488 append(new LIR_OpProfileInlineType(LIR_OprFact::address(mdp), obj, flag, tmp, not_null));
2489 }
2490
2491 void xadd(LIR_Opr src, LIR_Opr add, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xadd, src, add, res, tmp)); }
2492 void xchg(LIR_Opr src, LIR_Opr set, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xchg, src, set, res, tmp)); }
2493
2494 void load_klass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info) { append(new LIR_OpLoadKlass(obj, result, info)); }
2495
2496 #ifdef ASSERT
2497 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)); }
2498 #endif
2499 };
2500
2501 void print_LIR(BlockList* blocks);
2502
2503 class LIR_InsertionBuffer : public CompilationResourceObj {
2504 private:
2505 LIR_List* _lir; // the lir list where ops of this buffer should be inserted later (null when uninitialized)
2506
2507 // list of insertion points. index and count are stored alternately:
2508 // _index_and_count[i * 2]: the index into lir list where "count" ops should be inserted
2509 // _index_and_count[i * 2 + 1]: the number of ops to be inserted at index
2510 intStack _index_and_count;
2511
2512 // the LIR_Ops to be inserted
2513 LIR_OpList _ops;
2514
2515 void append_new(int index, int count) { _index_and_count.append(index); _index_and_count.append(count); }
2516 void set_index_at(int i, int value) { _index_and_count.at_put((i << 1), value); }
2517 void set_count_at(int i, int value) { _index_and_count.at_put((i << 1) + 1, value); }
2518
2519 #ifdef ASSERT
2520 void verify();
2521 #endif
2522 public:
2523 LIR_InsertionBuffer() : _lir(nullptr), _index_and_count(8), _ops(8) { }
2524
2525 // must be called before using the insertion buffer
2526 void init(LIR_List* lir) { assert(!initialized(), "already initialized"); _lir = lir; _index_and_count.clear(); _ops.clear(); }
2527 bool initialized() const { return _lir != nullptr; }
2528 // called automatically when the buffer is appended to the LIR_List
2529 void finish() { _lir = nullptr; }
2530
2531 // accessors
2532 LIR_List* lir_list() const { return _lir; }
2533 int number_of_insertion_points() const { return _index_and_count.length() >> 1; }
2534 int index_at(int i) const { return _index_and_count.at((i << 1)); }
2535 int count_at(int i) const { return _index_and_count.at((i << 1) + 1); }
2536
2537 int number_of_ops() const { return _ops.length(); }
2538 LIR_Op* op_at(int i) const { return _ops.at(i); }
2539
2540 // append an instruction to the buffer
2541 void append(int index, LIR_Op* op);
2542
2543 // instruction
2544 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)); }
2545 };
2546
2547
2548 //
2549 // LIR_OpVisitState is used for manipulating LIR_Ops in an abstract way.
2550 // Calling a LIR_Op's visit function with a LIR_OpVisitState causes
2551 // information about the input, output and temporaries used by the
2552 // op to be recorded. It also records whether the op has call semantics
2553 // and also records all the CodeEmitInfos used by this op.
2554 //
2555
2556
2557 class LIR_OpVisitState: public StackObj {
2558 public:
2559 typedef enum { inputMode, firstMode = inputMode, tempMode, outputMode, numModes, invalidMode = -1 } OprMode;
2560
2561 enum {
2562 maxNumberOfOperands = 21,
2563 maxNumberOfInfos = 4
2564 };
2565
2566 private:
2567 LIR_Op* _op;
2568
2569 // optimization: the operands and infos are not stored in a variable-length
2570 // list, but in a fixed-size array to save time of size checks and resizing
2571 int _oprs_len[numModes];
2572 LIR_Opr* _oprs_new[numModes][maxNumberOfOperands];
2573 int _info_len;
2574 CodeEmitInfo* _info_new[maxNumberOfInfos];
2575
2576 bool _has_call;
2577 bool _has_slow_case;
2578
2579
2580 // only include register operands
2581 // addresses are decomposed to the base and index registers
2582 // constants and stack operands are ignored
2583 void append(LIR_Opr& opr, OprMode mode) {
2584 assert(opr->is_valid(), "should not call this otherwise");
2585 assert(mode >= 0 && mode < numModes, "bad mode");
2586
2587 if (opr->is_register()) {
2588 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2589 _oprs_new[mode][_oprs_len[mode]++] = &opr;
2590
2591 } else if (opr->is_pointer()) {
2592 LIR_Address* address = opr->as_address_ptr();
2593 if (address != nullptr) {
2594 // special handling for addresses: add base and index register of the address
2595 // both are always input operands or temp if we want to extend
2596 // their liveness!
2597 if (mode == outputMode) {
2598 mode = inputMode;
2599 }
2600 assert (mode == inputMode || mode == tempMode, "input or temp only for addresses");
2601 if (address->_base->is_valid()) {
2602 assert(address->_base->is_register(), "must be");
2603 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2604 _oprs_new[mode][_oprs_len[mode]++] = &address->_base;
2605 }
2606 if (address->_index->is_valid()) {
2607 assert(address->_index->is_register(), "must be");
2608 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2609 _oprs_new[mode][_oprs_len[mode]++] = &address->_index;
2610 }
2611
2612 } else {
2613 assert(opr->is_constant(), "constant operands are not processed");
2614 }
2615 } else {
2616 assert(opr->is_stack(), "stack operands are not processed");
2617 }
2618 }
2619
2620 void append(CodeEmitInfo* info) {
2621 assert(info != nullptr, "should not call this otherwise");
2622 assert(_info_len < maxNumberOfInfos, "array overflow");
2623 _info_new[_info_len++] = info;
2624 }
2625
2626 public:
2627 LIR_OpVisitState() { reset(); }
2628
2629 LIR_Op* op() const { return _op; }
2630 void set_op(LIR_Op* op) { reset(); _op = op; }
2631
2632 bool has_call() const { return _has_call; }
2633 bool has_slow_case() const { return _has_slow_case; }
2634
2635 void reset() {
2636 _op = nullptr;
2637 _has_call = false;
2638 _has_slow_case = false;
2639
2640 _oprs_len[inputMode] = 0;
2641 _oprs_len[tempMode] = 0;
2642 _oprs_len[outputMode] = 0;
2643 _info_len = 0;
2644 }
2645
2646
2647 int opr_count(OprMode mode) const {
2648 assert(mode >= 0 && mode < numModes, "bad mode");
2649 return _oprs_len[mode];
2650 }
2651
2652 LIR_Opr opr_at(OprMode mode, int index) const {
2653 assert(mode >= 0 && mode < numModes, "bad mode");
2654 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2655 return *_oprs_new[mode][index];
2656 }
2657
2658 void set_opr_at(OprMode mode, int index, LIR_Opr opr) const {
2659 assert(mode >= 0 && mode < numModes, "bad mode");
2660 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2661 *_oprs_new[mode][index] = opr;
2662 }
2663
2664 int info_count() const {
2665 return _info_len;
2666 }
2667
2668 CodeEmitInfo* info_at(int index) const {
2669 assert(index < _info_len, "index out of bounds");
2670 return _info_new[index];
2671 }
2672
2673 XHandlers* all_xhandler();
2674
2675 // collects all register operands of the instruction
2676 void visit(LIR_Op* op);
2677
2678 #ifdef ASSERT
2679 // check that an operation has no operands
2680 bool no_operands(LIR_Op* op);
2681 #endif
2682
2683 // LIR_Op visitor functions use these to fill in the state
2684 void do_input(LIR_Opr& opr) { append(opr, LIR_OpVisitState::inputMode); }
2685 void do_output(LIR_Opr& opr) { append(opr, LIR_OpVisitState::outputMode); }
2686 void do_temp(LIR_Opr& opr) { append(opr, LIR_OpVisitState::tempMode); }
2687 void do_info(CodeEmitInfo* info) { append(info); }
2688
2689 void do_stub(CodeStub* stub);
2690 void do_call() { _has_call = true; }
2691 void do_slow_case() { _has_slow_case = true; }
2692 void do_slow_case(CodeEmitInfo* info) {
2693 _has_slow_case = true;
2694 append(info);
2695 }
2696 };
2697
2698
2699 inline LIR_Opr LIR_Opr::illegalOpr() { return LIR_OprFact::illegalOpr; };
2700
2701 inline LIR_Opr LIR_Opr::nullOpr() { return LIR_OprFact::nullOpr; };
2702
2703 #endif // SHARE_C1_C1_LIR_HPP