1 /*
2 * Copyright (c) 2000, 2023, 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
33 class BlockBegin;
34 class BlockList;
35 class LIR_Assembler;
36 class CodeEmitInfo;
37 class CodeStub;
38 class CodeStubList;
39 class C1SafepointPollStub;
40 class ArrayCopyStub;
41 class LIR_Op;
42 class ciType;
43 class ValueType;
44 class LIR_OpVisitState;
45 class FpuStackSim;
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 , is_fpu_stack_offset_bits = 1 // used in assertion checking on x86 for FPU stack slot allocation
239 , non_data_bits = kind_bits + type_bits + size_bits + destroys_bits + virtual_bits
240 + is_xmm_bits + last_use_bits + is_fpu_stack_offset_bits
241 , data_bits = BitsPerInt - non_data_bits
242 , reg_bits = data_bits / 2 // for two registers in one value encoding
243 };
244
245 enum OprShift : uintptr_t {
246 kind_shift = 0
247 , type_shift = kind_shift + kind_bits
248 , size_shift = type_shift + type_bits
249 , destroys_shift = size_shift + size_bits
250 , last_use_shift = destroys_shift + destroys_bits
251 , is_fpu_stack_offset_shift = last_use_shift + last_use_bits
252 , virtual_shift = is_fpu_stack_offset_shift + is_fpu_stack_offset_bits
253 , is_xmm_shift = virtual_shift + virtual_bits
254 , data_shift = is_xmm_shift + is_xmm_bits
255 , reg1_shift = data_shift
256 , reg2_shift = data_shift + reg_bits
257
258 };
259
260 enum OprSize {
261 single_size = 0 << size_shift
262 , double_size = 1 << size_shift
263 };
264
265 enum OprMask {
266 kind_mask = right_n_bits(kind_bits)
267 , type_mask = right_n_bits(type_bits) << type_shift
268 , size_mask = right_n_bits(size_bits) << size_shift
269 , last_use_mask = right_n_bits(last_use_bits) << last_use_shift
270 , is_fpu_stack_offset_mask = right_n_bits(is_fpu_stack_offset_bits) << is_fpu_stack_offset_shift
271 , virtual_mask = right_n_bits(virtual_bits) << virtual_shift
272 , is_xmm_mask = right_n_bits(is_xmm_bits) << is_xmm_shift
273 , pointer_mask = right_n_bits(pointer_bits)
274 , lower_reg_mask = right_n_bits(reg_bits)
275 , no_type_mask = (int)(~(type_mask | last_use_mask | is_fpu_stack_offset_mask))
276 };
277
278 uint32_t data() const { return (uint32_t)value() >> data_shift; }
279 int lo_reg_half() const { return data() & lower_reg_mask; }
280 int hi_reg_half() const { return (data() >> reg_bits) & lower_reg_mask; }
281 OprKind kind_field() const { return (OprKind)(value() & kind_mask); }
282 OprSize size_field() const { return (OprSize)(value() & size_mask); }
283
284 static char type_char(BasicType t);
285
286 public:
287 LIR_Opr() : _value(0) {}
288 LIR_Opr(intptr_t val) : _value(val) {}
289 LIR_Opr(LIR_OprPtr *val) : _value(reinterpret_cast<intptr_t>(val)) {}
290 bool operator==(const LIR_Opr &other) const { return _value == other._value; }
291 bool operator!=(const LIR_Opr &other) const { return _value != other._value; }
292 explicit operator bool() const { return _value != 0; }
293
294 // UGLY HACK: make this value object look like a pointer (to itself). This
295 // operator overload should be removed, and all callers updated from
296 // `opr->fn()` to `opr.fn()`.
297 const LIR_Opr* operator->() const { return this; }
298 LIR_Opr* operator->() { return this; }
299
300 enum {
301 vreg_base = ConcreteRegisterImpl::number_of_registers,
302 data_max = (1 << data_bits) - 1, // max unsigned value for data bit field
303 vreg_limit = 10000, // choose a reasonable limit,
304 vreg_max = MIN2(vreg_limit, data_max) // and make sure if fits in the bit field
305 };
306
307 static inline LIR_Opr illegalOpr();
308 static inline LIR_Opr nullOpr();
309
310 enum OprType {
311 unknown_type = 0 << type_shift // means: not set (catch uninitialized types)
312 , int_type = 1 << type_shift
313 , long_type = 2 << type_shift
314 , object_type = 3 << type_shift
315 , address_type = 4 << type_shift
316 , float_type = 5 << type_shift
317 , double_type = 6 << type_shift
318 , metadata_type = 7 << type_shift
319 };
320 friend OprType as_OprType(BasicType t);
321 friend BasicType as_BasicType(OprType t);
322
323 OprType type_field_valid() const { assert(is_register() || is_stack(), "should not be called otherwise"); return (OprType)(value() & type_mask); }
324 OprType type_field() const { return is_illegal() ? unknown_type : (OprType)(value() & type_mask); }
325
326 static OprSize size_for(BasicType t) {
327 switch (t) {
328 case T_LONG:
329 case T_DOUBLE:
330 return double_size;
331 break;
332
333 case T_FLOAT:
334 case T_BOOLEAN:
335 case T_CHAR:
336 case T_BYTE:
337 case T_SHORT:
338 case T_INT:
339 case T_ADDRESS:
340 case T_OBJECT:
341 case T_ARRAY:
342 case T_METADATA:
343 return single_size;
344 break;
345
346 default:
347 ShouldNotReachHere();
348 return single_size;
349 }
350 }
351
352
353 void validate_type() const PRODUCT_RETURN;
354
355 BasicType type() const {
356 if (is_pointer()) {
357 return pointer()->type();
358 }
359 return as_BasicType(type_field());
360 }
361
362
363 ValueType* value_type() const { return as_ValueType(type()); }
364
365 char type_char() const { return type_char((is_pointer()) ? pointer()->type() : type()); }
366
367 bool is_equal(LIR_Opr opr) const { return *this == opr; }
368 // checks whether types are same
369 bool is_same_type(LIR_Opr opr) const {
370 assert(type_field() != unknown_type &&
371 opr->type_field() != unknown_type, "shouldn't see unknown_type");
372 return type_field() == opr->type_field();
373 }
374 bool is_same_register(LIR_Opr opr) {
375 return (is_register() && opr->is_register() &&
376 kind_field() == opr->kind_field() &&
377 (value() & no_type_mask) == (opr->value() & no_type_mask));
378 }
379
380 bool is_pointer() const { return check_value_mask(pointer_mask, pointer_value); }
381 bool is_illegal() const { return kind_field() == illegal_value; }
382 bool is_valid() const { return kind_field() != illegal_value; }
383
384 bool is_register() const { return is_cpu_register() || is_fpu_register(); }
385 bool is_virtual() const { return is_virtual_cpu() || is_virtual_fpu(); }
386
387 bool is_constant() const { return is_pointer() && pointer()->as_constant() != nullptr; }
388 bool is_address() const { return is_pointer() && pointer()->as_address() != nullptr; }
389
390 bool is_float_kind() const { return is_pointer() ? pointer()->is_float_kind() : (kind_field() == fpu_register); }
391 bool is_oop() const;
392
393 // semantic for fpu- and xmm-registers:
394 // * is_float and is_double return true for xmm_registers
395 // (so is_single_fpu and is_single_xmm are true)
396 // * So you must always check for is_???_xmm prior to is_???_fpu to
397 // distinguish between fpu- and xmm-registers
398
399 bool is_stack() const { validate_type(); return check_value_mask(kind_mask, stack_value); }
400 bool is_single_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | single_size); }
401 bool is_double_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | double_size); }
402
403 bool is_cpu_register() const { validate_type(); return check_value_mask(kind_mask, cpu_register); }
404 bool is_virtual_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register | virtual_mask); }
405 bool is_fixed_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register); }
406 bool is_single_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | single_size); }
407 bool is_double_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | double_size); }
408
409 bool is_fpu_register() const { validate_type(); return check_value_mask(kind_mask, fpu_register); }
410 bool is_virtual_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register | virtual_mask); }
411 bool is_fixed_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register); }
412 bool is_single_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | single_size); }
413 bool is_double_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | double_size); }
414
415 bool is_xmm_register() const { validate_type(); return check_value_mask(kind_mask | is_xmm_mask, fpu_register | is_xmm_mask); }
416 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); }
417 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); }
418
419 // fast accessor functions for special bits that do not work for pointers
420 // (in this functions, the check for is_pointer() is omitted)
421 bool is_single_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, single_size); }
422 bool is_double_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, double_size); }
423 bool is_virtual_register() const { assert(is_register(), "type check"); return check_value_mask(virtual_mask, virtual_mask); }
424 bool is_oop_register() const { assert(is_register() || is_stack(), "type check"); return type_field_valid() == object_type; }
425 BasicType type_register() const { assert(is_register() || is_stack(), "type check"); return as_BasicType(type_field_valid()); }
426
427 bool is_last_use() const { assert(is_register(), "only works for registers"); return (value() & last_use_mask) != 0; }
428 bool is_fpu_stack_offset() const { assert(is_register(), "only works for registers"); return (value() & is_fpu_stack_offset_mask) != 0; }
429 LIR_Opr make_last_use() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | last_use_mask); }
430 LIR_Opr make_fpu_stack_offset() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | is_fpu_stack_offset_mask); }
431
432
433 int single_stack_ix() const { assert(is_single_stack() && !is_virtual(), "type check"); return (int)data(); }
434 int double_stack_ix() const { assert(is_double_stack() && !is_virtual(), "type check"); return (int)data(); }
435 RegNr cpu_regnr() const { assert(is_single_cpu() && !is_virtual(), "type check"); return (RegNr)data(); }
436 RegNr cpu_regnrLo() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
437 RegNr cpu_regnrHi() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
438 RegNr fpu_regnr() const { assert(is_single_fpu() && !is_virtual(), "type check"); return (RegNr)data(); }
439 RegNr fpu_regnrLo() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
440 RegNr fpu_regnrHi() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
441 RegNr xmm_regnr() const { assert(is_single_xmm() && !is_virtual(), "type check"); return (RegNr)data(); }
442 RegNr xmm_regnrLo() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
443 RegNr xmm_regnrHi() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
444 int vreg_number() const { assert(is_virtual(), "type check"); return (RegNr)data(); }
445
446 LIR_OprPtr* pointer() const { assert(_value != 0 && is_pointer(), "nullness and type check"); return (LIR_OprPtr*)_value; }
447 LIR_Const* as_constant_ptr() const { return pointer()->as_constant(); }
448 LIR_Address* as_address_ptr() const { return pointer()->as_address(); }
449
450 Register as_register() const;
451 Register as_register_lo() const;
452 Register as_register_hi() const;
453
454 Register as_pointer_register() {
455 #ifdef _LP64
456 if (is_double_cpu()) {
457 assert(as_register_lo() == as_register_hi(), "should be a single register");
458 return as_register_lo();
459 }
460 #endif
461 return as_register();
462 }
463
464 FloatRegister as_float_reg () const;
465 FloatRegister as_double_reg () const;
466 #ifdef X86
467 XMMRegister as_xmm_float_reg () const;
468 XMMRegister as_xmm_double_reg() const;
469 // for compatibility with RInfo
470 int fpu() const { return lo_reg_half(); }
471 #endif
472
473 jint as_jint() const { return as_constant_ptr()->as_jint(); }
474 jlong as_jlong() const { return as_constant_ptr()->as_jlong(); }
475 jfloat as_jfloat() const { return as_constant_ptr()->as_jfloat(); }
476 jdouble as_jdouble() const { return as_constant_ptr()->as_jdouble(); }
477 jobject as_jobject() const { return as_constant_ptr()->as_jobject(); }
478
479 void print() const PRODUCT_RETURN;
480 void print(outputStream* out) const PRODUCT_RETURN;
481 };
482
483 inline LIR_Opr::OprType as_OprType(BasicType type) {
484 switch (type) {
485 case T_INT: return LIR_Opr::int_type;
486 case T_LONG: return LIR_Opr::long_type;
487 case T_FLOAT: return LIR_Opr::float_type;
488 case T_DOUBLE: return LIR_Opr::double_type;
489 case T_OBJECT:
490 case T_ARRAY: return LIR_Opr::object_type;
491 case T_ADDRESS: return LIR_Opr::address_type;
492 case T_METADATA: return LIR_Opr::metadata_type;
493 case T_ILLEGAL: // fall through
494 default: ShouldNotReachHere(); return LIR_Opr::unknown_type;
495 }
496 }
497
498 inline BasicType as_BasicType(LIR_Opr::OprType t) {
499 switch (t) {
500 case LIR_Opr::int_type: return T_INT;
501 case LIR_Opr::long_type: return T_LONG;
502 case LIR_Opr::float_type: return T_FLOAT;
503 case LIR_Opr::double_type: return T_DOUBLE;
504 case LIR_Opr::object_type: return T_OBJECT;
505 case LIR_Opr::address_type: return T_ADDRESS;
506 case LIR_Opr::metadata_type:return T_METADATA;
507 case LIR_Opr::unknown_type: // fall through
508 default: ShouldNotReachHere(); return T_ILLEGAL;
509 }
510 }
511
512
513 // LIR_Address
514 class LIR_Address: public LIR_OprPtr {
515 friend class LIR_OpVisitState;
516
517 public:
518 // NOTE: currently these must be the log2 of the scale factor (and
519 // must also be equivalent to the ScaleFactor enum in
520 // assembler_i486.hpp)
521 enum Scale {
522 times_1 = 0,
523 times_2 = 1,
524 times_4 = 2,
525 times_8 = 3
526 };
527
528 private:
529 LIR_Opr _base;
530 LIR_Opr _index;
531 Scale _scale;
532 intx _disp;
533 BasicType _type;
534
535 public:
536 LIR_Address(LIR_Opr base, LIR_Opr index, BasicType type):
537 _base(base)
538 , _index(index)
539 , _scale(times_1)
540 , _disp(0)
541 , _type(type) { verify(); }
542
543 LIR_Address(LIR_Opr base, intx disp, BasicType type):
544 _base(base)
545 , _index(LIR_Opr::illegalOpr())
546 , _scale(times_1)
547 , _disp(disp)
548 , _type(type) { verify(); }
549
550 LIR_Address(LIR_Opr base, BasicType type):
551 _base(base)
552 , _index(LIR_Opr::illegalOpr())
553 , _scale(times_1)
554 , _disp(0)
555 , _type(type) { verify(); }
556
557 LIR_Address(LIR_Opr base, LIR_Opr index, intx disp, BasicType type):
558 _base(base)
559 , _index(index)
560 , _scale(times_1)
561 , _disp(disp)
562 , _type(type) { verify(); }
563
564 LIR_Address(LIR_Opr base, LIR_Opr index, Scale scale, intx disp, BasicType type):
565 _base(base)
566 , _index(index)
567 , _scale(scale)
568 , _disp(disp)
569 , _type(type) { verify(); }
570
571 LIR_Opr base() const { return _base; }
572 LIR_Opr index() const { return _index; }
573 Scale scale() const { return _scale; }
574 intx disp() const { return _disp; }
575
576 bool equals(LIR_Address* other) const { return base() == other->base() && index() == other->index() && disp() == other->disp() && scale() == other->scale(); }
577
578 virtual LIR_Address* as_address() { return this; }
579 virtual BasicType type() const { return _type; }
580 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
581
582 void verify() const PRODUCT_RETURN;
583
584 static Scale scale(BasicType type);
585 };
586
587
588 // operand factory
589 class LIR_OprFact: public AllStatic {
590 public:
591
592 static LIR_Opr illegalOpr;
593 static LIR_Opr nullOpr;
594
595 static LIR_Opr single_cpu(int reg) {
596 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
597 LIR_Opr::int_type |
598 LIR_Opr::cpu_register |
599 LIR_Opr::single_size);
600 }
601 static LIR_Opr single_cpu_oop(int reg) {
602 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
603 LIR_Opr::object_type |
604 LIR_Opr::cpu_register |
605 LIR_Opr::single_size);
606 }
607 static LIR_Opr single_cpu_address(int reg) {
608 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
609 LIR_Opr::address_type |
610 LIR_Opr::cpu_register |
611 LIR_Opr::single_size);
612 }
613 static LIR_Opr single_cpu_metadata(int reg) {
614 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
615 LIR_Opr::metadata_type |
616 LIR_Opr::cpu_register |
617 LIR_Opr::single_size);
618 }
619 static LIR_Opr double_cpu(int reg1, int reg2) {
620 LP64_ONLY(assert(reg1 == reg2, "must be identical"));
621 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) |
622 (reg2 << LIR_Opr::reg2_shift) |
623 LIR_Opr::long_type |
624 LIR_Opr::cpu_register |
625 LIR_Opr::double_size);
626 }
627
628 static LIR_Opr single_fpu(int reg) {
629 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
630 LIR_Opr::float_type |
631 LIR_Opr::fpu_register |
632 LIR_Opr::single_size);
633 }
634
635 // Platform dependent.
636 static LIR_Opr double_fpu(int reg1, int reg2 = -1 /*fnoreg*/);
637
638 #ifdef ARM32
639 static LIR_Opr single_softfp(int reg) {
640 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
641 LIR_Opr::float_type |
642 LIR_Opr::cpu_register |
643 LIR_Opr::single_size);
644 }
645 static LIR_Opr double_softfp(int reg1, int reg2) {
646 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) |
647 (reg2 << LIR_Opr::reg2_shift) |
648 LIR_Opr::double_type |
649 LIR_Opr::cpu_register |
650 LIR_Opr::double_size);
651 }
652 #endif // ARM32
653
654 #if defined(X86)
655 static LIR_Opr single_xmm(int reg) {
656 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
657 LIR_Opr::float_type |
658 LIR_Opr::fpu_register |
659 LIR_Opr::single_size |
660 LIR_Opr::is_xmm_mask);
661 }
662 static LIR_Opr double_xmm(int reg) {
663 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
664 (reg << LIR_Opr::reg2_shift) |
665 LIR_Opr::double_type |
666 LIR_Opr::fpu_register |
667 LIR_Opr::double_size |
668 LIR_Opr::is_xmm_mask);
669 }
670 #endif // X86
671
672 static LIR_Opr virtual_register(int index, BasicType type) {
673 if (index > LIR_Opr::vreg_max) {
674 // Running out of virtual registers. Caller should bailout.
675 return illegalOpr;
676 }
677
678 LIR_Opr res;
679 switch (type) {
680 case T_OBJECT: // fall through
681 case T_ARRAY:
682 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
683 LIR_Opr::object_type |
684 LIR_Opr::cpu_register |
685 LIR_Opr::single_size |
686 LIR_Opr::virtual_mask);
687 break;
688
689 case T_METADATA:
690 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
691 LIR_Opr::metadata_type|
692 LIR_Opr::cpu_register |
693 LIR_Opr::single_size |
694 LIR_Opr::virtual_mask);
695 break;
696
697 case T_INT:
698 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
699 LIR_Opr::int_type |
700 LIR_Opr::cpu_register |
701 LIR_Opr::single_size |
702 LIR_Opr::virtual_mask);
703 break;
704
705 case T_ADDRESS:
706 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
707 LIR_Opr::address_type |
708 LIR_Opr::cpu_register |
709 LIR_Opr::single_size |
710 LIR_Opr::virtual_mask);
711 break;
712
713 case T_LONG:
714 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
715 LIR_Opr::long_type |
716 LIR_Opr::cpu_register |
717 LIR_Opr::double_size |
718 LIR_Opr::virtual_mask);
719 break;
720
721 #ifdef __SOFTFP__
722 case T_FLOAT:
723 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
724 LIR_Opr::float_type |
725 LIR_Opr::cpu_register |
726 LIR_Opr::single_size |
727 LIR_Opr::virtual_mask);
728 break;
729 case T_DOUBLE:
730 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
731 LIR_Opr::double_type |
732 LIR_Opr::cpu_register |
733 LIR_Opr::double_size |
734 LIR_Opr::virtual_mask);
735 break;
736 #else // __SOFTFP__
737 case T_FLOAT:
738 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
739 LIR_Opr::float_type |
740 LIR_Opr::fpu_register |
741 LIR_Opr::single_size |
742 LIR_Opr::virtual_mask);
743 break;
744
745 case
746 T_DOUBLE: res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
747 LIR_Opr::double_type |
748 LIR_Opr::fpu_register |
749 LIR_Opr::double_size |
750 LIR_Opr::virtual_mask);
751 break;
752 #endif // __SOFTFP__
753 default: ShouldNotReachHere(); res = illegalOpr;
754 }
755
756 #ifdef ASSERT
757 res->validate_type();
758 assert(res->vreg_number() == index, "conversion check");
759 assert(index >= LIR_Opr::vreg_base, "must start at vreg_base");
760
761 // old-style calculation; check if old and new method are equal
762 LIR_Opr::OprType t = as_OprType(type);
763 #ifdef __SOFTFP__
764 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
765 t |
766 LIR_Opr::cpu_register |
767 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask);
768 #else // __SOFTFP__
769 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | t |
770 ((type == T_FLOAT || type == T_DOUBLE) ? LIR_Opr::fpu_register : LIR_Opr::cpu_register) |
771 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask);
772 assert(res == old_res, "old and new method not equal");
773 #endif // __SOFTFP__
774 #endif // ASSERT
775
776 return res;
777 }
778
779 // 'index' is computed by FrameMap::local_stack_pos(index); do not use other parameters as
780 // the index is platform independent; a double stack using indices 2 and 3 has always
781 // index 2.
782 static LIR_Opr stack(int index, BasicType type) {
783 LIR_Opr res;
784 switch (type) {
785 case T_OBJECT: // fall through
786 case T_ARRAY:
787 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
788 LIR_Opr::object_type |
789 LIR_Opr::stack_value |
790 LIR_Opr::single_size);
791 break;
792
793 case T_METADATA:
794 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
795 LIR_Opr::metadata_type |
796 LIR_Opr::stack_value |
797 LIR_Opr::single_size);
798 break;
799 case T_INT:
800 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
801 LIR_Opr::int_type |
802 LIR_Opr::stack_value |
803 LIR_Opr::single_size);
804 break;
805
806 case T_ADDRESS:
807 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
808 LIR_Opr::address_type |
809 LIR_Opr::stack_value |
810 LIR_Opr::single_size);
811 break;
812
813 case T_LONG:
814 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
815 LIR_Opr::long_type |
816 LIR_Opr::stack_value |
817 LIR_Opr::double_size);
818 break;
819
820 case T_FLOAT:
821 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
822 LIR_Opr::float_type |
823 LIR_Opr::stack_value |
824 LIR_Opr::single_size);
825 break;
826 case T_DOUBLE:
827 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
828 LIR_Opr::double_type |
829 LIR_Opr::stack_value |
830 LIR_Opr::double_size);
831 break;
832
833 default: ShouldNotReachHere(); res = illegalOpr;
834 }
835
836 #ifdef ASSERT
837 assert(index >= 0, "index must be positive");
838 assert(index == (int)res->data(), "conversion check");
839
840 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
841 LIR_Opr::stack_value |
842 as_OprType(type) |
843 LIR_Opr::size_for(type));
844 assert(res == old_res, "old and new method not equal");
845 #endif
846
847 return res;
848 }
849
850 static LIR_Opr intConst(jint i) { return (LIR_Opr)(new LIR_Const(i)); }
851 static LIR_Opr longConst(jlong l) { return (LIR_Opr)(new LIR_Const(l)); }
852 static LIR_Opr floatConst(jfloat f) { return (LIR_Opr)(new LIR_Const(f)); }
853 static LIR_Opr doubleConst(jdouble d) { return (LIR_Opr)(new LIR_Const(d)); }
854 static LIR_Opr oopConst(jobject o) { return (LIR_Opr)(new LIR_Const(o)); }
855 static LIR_Opr address(LIR_Address* a) { return (LIR_Opr)a; }
856 static LIR_Opr intptrConst(void* p) { return (LIR_Opr)(new LIR_Const(p)); }
857 static LIR_Opr intptrConst(intptr_t v) { return (LIR_Opr)(new LIR_Const((void*)v)); }
858 static LIR_Opr illegal() { return (LIR_Opr)-1; }
859 static LIR_Opr addressConst(jint i) { return (LIR_Opr)(new LIR_Const(i, true)); }
860 static LIR_Opr metadataConst(Metadata* m) { return (LIR_Opr)(new LIR_Const(m)); }
861
862 static LIR_Opr value_type(ValueType* type);
863 };
864
865
866 //-------------------------------------------------------------------------------
867 // LIR Instructions
868 //-------------------------------------------------------------------------------
869 //
870 // Note:
871 // - every instruction has a result operand
872 // - every instruction has an CodeEmitInfo operand (can be revisited later)
873 // - every instruction has a LIR_OpCode operand
874 // - LIR_OpN, means an instruction that has N input operands
875 //
876 // class hierarchy:
877 //
878 class LIR_Op;
879 class LIR_Op0;
880 class LIR_OpLabel;
881 class LIR_Op1;
882 class LIR_OpBranch;
883 class LIR_OpConvert;
884 class LIR_OpAllocObj;
885 class LIR_OpReturn;
886 class LIR_OpRoundFP;
887 class LIR_Op2;
888 class LIR_OpDelay;
889 class LIR_Op3;
890 class LIR_OpAllocArray;
891 class LIR_Op4;
892 class LIR_OpCall;
893 class LIR_OpJavaCall;
894 class LIR_OpRTCall;
895 class LIR_OpArrayCopy;
896 class LIR_OpUpdateCRC32;
897 class LIR_OpLock;
898 class LIR_OpTypeCheck;
899 class LIR_OpFlattenedArrayCheck;
900 class LIR_OpNullFreeArrayCheck;
901 class LIR_OpSubstitutabilityCheck;
902 class LIR_OpCompareAndSwap;
903 class LIR_OpLoadKlass;
904 class LIR_OpProfileCall;
905 class LIR_OpProfileType;
906 class LIR_OpProfileInlineType;
907 #ifdef ASSERT
908 class LIR_OpAssert;
909 #endif
910
911 // LIR operation codes
912 enum LIR_Code {
913 lir_none
914 , begin_op0
915 , lir_label
916 , lir_nop
917 , lir_std_entry
918 , lir_osr_entry
919 , lir_fpop_raw
920 , lir_breakpoint
921 , lir_rtcall
922 , lir_membar
923 , lir_membar_acquire
924 , lir_membar_release
925 , lir_membar_loadload
926 , lir_membar_storestore
927 , lir_membar_loadstore
928 , lir_membar_storeload
929 , lir_get_thread
930 , lir_on_spin_wait
931 , lir_check_orig_pc
932 , end_op0
933 , begin_op1
934 , lir_fxch
935 , lir_fld
936 , lir_push
937 , lir_pop
938 , lir_null_check
939 , lir_return
940 , lir_leal
941 , lir_move
942 , lir_convert
943 , lir_alloc_object
944 , lir_monaddr
945 , lir_roundfp
946 , lir_safepoint
947 , lir_unwind
948 , lir_load_klass
949 , end_op1
950 , begin_op2
951 , lir_branch
952 , lir_cond_float_branch
953 , lir_cmp
954 , lir_cmp_l2i
955 , lir_ucmp_fd2i
956 , lir_cmp_fd2i
957 , lir_add
958 , lir_sub
959 , lir_mul
960 , lir_div
961 , lir_rem
962 , lir_sqrt
963 , lir_abs
964 , lir_neg
965 , lir_tan
966 , lir_f2hf
967 , lir_hf2f
968 , lir_log10
969 , lir_logic_and
970 , lir_logic_or
971 , lir_logic_xor
972 , lir_shl
973 , lir_shr
974 , lir_ushr
975 , lir_alloc_array
976 , lir_throw
977 , lir_xadd
978 , lir_xchg
979 , end_op2
980 , begin_op3
981 , lir_idiv
982 , lir_irem
983 , lir_fmad
984 , lir_fmaf
985 , end_op3
986 , begin_op4
987 , lir_cmove
988 , end_op4
989 , begin_opJavaCall
990 , lir_static_call
991 , lir_optvirtual_call
992 , lir_icvirtual_call
993 , lir_dynamic_call
994 , end_opJavaCall
995 , begin_opArrayCopy
996 , lir_arraycopy
997 , end_opArrayCopy
998 , begin_opUpdateCRC32
999 , lir_updatecrc32
1000 , end_opUpdateCRC32
1001 , begin_opLock
1002 , lir_lock
1003 , lir_unlock
1004 , end_opLock
1005 , begin_delay_slot
1006 , lir_delay_slot
1007 , end_delay_slot
1008 , begin_opTypeCheck
1009 , lir_instanceof
1010 , lir_checkcast
1011 , lir_store_check
1012 , end_opTypeCheck
1013 , begin_opFlattenedArrayCheck
1014 , lir_flat_array_check
1015 , end_opFlattenedArrayCheck
1016 , begin_opNullFreeArrayCheck
1017 , lir_null_free_array_check
1018 , end_opNullFreeArrayCheck
1019 , begin_opSubstitutabilityCheck
1020 , lir_substitutability_check
1021 , end_opSubstitutabilityCheck
1022 , begin_opCompareAndSwap
1023 , lir_cas_long
1024 , lir_cas_obj
1025 , lir_cas_int
1026 , end_opCompareAndSwap
1027 , begin_opMDOProfile
1028 , lir_profile_call
1029 , lir_profile_type
1030 , lir_profile_inline_type
1031 , end_opMDOProfile
1032 , begin_opAssert
1033 , lir_assert
1034 , end_opAssert
1035 #ifdef INCLUDE_ZGC
1036 , begin_opXLoadBarrierTest
1037 , lir_xloadbarrier_test
1038 , end_opXLoadBarrierTest
1039 #endif
1040 };
1041
1042
1043 enum LIR_Condition {
1044 lir_cond_equal
1045 , lir_cond_notEqual
1046 , lir_cond_less
1047 , lir_cond_lessEqual
1048 , lir_cond_greaterEqual
1049 , lir_cond_greater
1050 , lir_cond_belowEqual
1051 , lir_cond_aboveEqual
1052 , lir_cond_always
1053 , lir_cond_unknown = -1
1054 };
1055
1056
1057 enum LIR_PatchCode {
1058 lir_patch_none,
1059 lir_patch_low,
1060 lir_patch_high,
1061 lir_patch_normal
1062 };
1063
1064
1065 enum LIR_MoveKind {
1066 lir_move_normal,
1067 lir_move_volatile,
1068 lir_move_wide,
1069 lir_move_max_flag
1070 };
1071
1072
1073 // --------------------------------------------------
1074 // LIR_Op
1075 // --------------------------------------------------
1076 class LIR_Op: public CompilationResourceObj {
1077 friend class LIR_OpVisitState;
1078
1079 #ifdef ASSERT
1080 private:
1081 const char * _file;
1082 int _line;
1083 #endif
1084
1085 protected:
1086 LIR_Opr _result;
1087 unsigned short _code;
1088 unsigned short _flags;
1089 CodeEmitInfo* _info;
1090 int _id; // value id for register allocation
1091 int _fpu_pop_count;
1092 Instruction* _source; // for debugging
1093
1094 static void print_condition(outputStream* out, LIR_Condition cond) PRODUCT_RETURN;
1095
1096 protected:
1097 static bool is_in_range(LIR_Code test, LIR_Code start, LIR_Code end) { return start < test && test < end; }
1098
1099 public:
1100 LIR_Op()
1101 :
1102 #ifdef ASSERT
1103 _file(nullptr)
1104 , _line(0),
1105 #endif
1106 _result(LIR_OprFact::illegalOpr)
1107 , _code(lir_none)
1108 , _flags(0)
1109 , _info(nullptr)
1110 , _id(-1)
1111 , _fpu_pop_count(0)
1112 , _source(nullptr) {}
1113
1114 LIR_Op(LIR_Code code, LIR_Opr result, CodeEmitInfo* info)
1115 :
1116 #ifdef ASSERT
1117 _file(nullptr)
1118 , _line(0),
1119 #endif
1120 _result(result)
1121 , _code(code)
1122 , _flags(0)
1123 , _info(info)
1124 , _id(-1)
1125 , _fpu_pop_count(0)
1126 , _source(nullptr) {}
1127
1128 CodeEmitInfo* info() const { return _info; }
1129 LIR_Code code() const { return (LIR_Code)_code; }
1130 LIR_Opr result_opr() const { return _result; }
1131 void set_result_opr(LIR_Opr opr) { _result = opr; }
1132
1133 #ifdef ASSERT
1134 void set_file_and_line(const char * file, int line) {
1135 _file = file;
1136 _line = line;
1137 }
1138 #endif
1139
1140 virtual const char * name() const PRODUCT_RETURN0;
1141 virtual void visit(LIR_OpVisitState* state);
1142
1143 int id() const { return _id; }
1144 void set_id(int id) { _id = id; }
1145
1146 // FPU stack simulation helpers -- only used on Intel
1147 void set_fpu_pop_count(int count) { assert(count >= 0 && count <= 1, "currently only 0 and 1 are valid"); _fpu_pop_count = count; }
1148 int fpu_pop_count() const { return _fpu_pop_count; }
1149 bool pop_fpu_stack() { return _fpu_pop_count > 0; }
1150
1151 Instruction* source() const { return _source; }
1152 void set_source(Instruction* ins) { _source = ins; }
1153
1154 virtual void emit_code(LIR_Assembler* masm) = 0;
1155 virtual void print_instr(outputStream* out) const = 0;
1156 virtual void print_on(outputStream* st) const PRODUCT_RETURN;
1157
1158 virtual bool is_patching() { return false; }
1159 virtual LIR_OpCall* as_OpCall() { return nullptr; }
1160 virtual LIR_OpJavaCall* as_OpJavaCall() { return nullptr; }
1161 virtual LIR_OpLabel* as_OpLabel() { return nullptr; }
1162 virtual LIR_OpDelay* as_OpDelay() { return nullptr; }
1163 virtual LIR_OpLock* as_OpLock() { return nullptr; }
1164 virtual LIR_OpAllocArray* as_OpAllocArray() { return nullptr; }
1165 virtual LIR_OpAllocObj* as_OpAllocObj() { return nullptr; }
1166 virtual LIR_OpRoundFP* as_OpRoundFP() { return nullptr; }
1167 virtual LIR_OpBranch* as_OpBranch() { return nullptr; }
1168 virtual LIR_OpReturn* as_OpReturn() { return nullptr; }
1169 virtual LIR_OpRTCall* as_OpRTCall() { return nullptr; }
1170 virtual LIR_OpConvert* as_OpConvert() { return nullptr; }
1171 virtual LIR_Op0* as_Op0() { return nullptr; }
1172 virtual LIR_Op1* as_Op1() { return nullptr; }
1173 virtual LIR_Op2* as_Op2() { return nullptr; }
1174 virtual LIR_Op3* as_Op3() { return nullptr; }
1175 virtual LIR_Op4* as_Op4() { return nullptr; }
1176 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return nullptr; }
1177 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return nullptr; }
1178 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return nullptr; }
1179 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return nullptr; }
1180 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return nullptr; }
1181 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return nullptr; }
1182 virtual LIR_OpCompareAndSwap* as_OpCompareAndSwap() { return nullptr; }
1183 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return nullptr; }
1184 virtual LIR_OpProfileCall* as_OpProfileCall() { return nullptr; }
1185 virtual LIR_OpProfileType* as_OpProfileType() { return nullptr; }
1186 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return nullptr; }
1187 #ifdef ASSERT
1188 virtual LIR_OpAssert* as_OpAssert() { return nullptr; }
1189 #endif
1190
1191 virtual void verify() const {}
1192 };
1193
1194 // for calls
1195 class LIR_OpCall: public LIR_Op {
1196 friend class LIR_OpVisitState;
1197
1198 protected:
1199 address _addr;
1200 LIR_OprList* _arguments;
1201 protected:
1202 LIR_OpCall(LIR_Code code, address addr, LIR_Opr result,
1203 LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1204 : LIR_Op(code, result, info)
1205 , _addr(addr)
1206 , _arguments(arguments) {}
1207
1208 public:
1209 address addr() const { return _addr; }
1210 const LIR_OprList* arguments() const { return _arguments; }
1211 virtual LIR_OpCall* as_OpCall() { return this; }
1212 };
1213
1214
1215 // --------------------------------------------------
1216 // LIR_OpJavaCall
1217 // --------------------------------------------------
1218 class LIR_OpJavaCall: public LIR_OpCall {
1219 friend class LIR_OpVisitState;
1220
1221 private:
1222 ciMethod* _method;
1223 LIR_Opr _receiver;
1224 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.
1225
1226 public:
1227 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1228 LIR_Opr receiver, LIR_Opr result,
1229 address addr, LIR_OprList* arguments,
1230 CodeEmitInfo* info)
1231 : LIR_OpCall(code, addr, result, arguments, info)
1232 , _method(method)
1233 , _receiver(receiver)
1234 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1235 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1236
1237 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1238 LIR_Opr receiver, LIR_Opr result, intptr_t vtable_offset,
1239 LIR_OprList* arguments, CodeEmitInfo* info)
1240 : LIR_OpCall(code, (address)vtable_offset, result, arguments, info)
1241 , _method(method)
1242 , _receiver(receiver)
1243 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1244 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1245
1246 LIR_Opr receiver() const { return _receiver; }
1247 ciMethod* method() const { return _method; }
1248
1249 // JSR 292 support.
1250 bool is_invokedynamic() const { return code() == lir_dynamic_call; }
1251 bool is_method_handle_invoke() const {
1252 return method()->is_compiled_lambda_form() || // Java-generated lambda form
1253 method()->is_method_handle_intrinsic(); // JVM-generated MH intrinsic
1254 }
1255
1256 virtual void emit_code(LIR_Assembler* masm);
1257 virtual LIR_OpJavaCall* as_OpJavaCall() { return this; }
1258 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1259
1260 bool maybe_return_as_fields(ciInlineKlass** vk = nullptr) const;
1261 };
1262
1263 // --------------------------------------------------
1264 // LIR_OpLabel
1265 // --------------------------------------------------
1266 // Location where a branch can continue
1267 class LIR_OpLabel: public LIR_Op {
1268 friend class LIR_OpVisitState;
1269
1270 private:
1271 Label* _label;
1272 public:
1273 LIR_OpLabel(Label* lbl)
1274 : LIR_Op(lir_label, LIR_OprFact::illegalOpr, nullptr)
1275 , _label(lbl) {}
1276 Label* label() const { return _label; }
1277
1278 virtual void emit_code(LIR_Assembler* masm);
1279 virtual LIR_OpLabel* as_OpLabel() { return this; }
1280 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1281 };
1282
1283 // LIR_OpArrayCopy
1284 class LIR_OpArrayCopy: public LIR_Op {
1285 friend class LIR_OpVisitState;
1286
1287 private:
1288 ArrayCopyStub* _stub;
1289 LIR_Opr _src;
1290 LIR_Opr _src_pos;
1291 LIR_Opr _dst;
1292 LIR_Opr _dst_pos;
1293 LIR_Opr _length;
1294 LIR_Opr _tmp;
1295 ciArrayKlass* _expected_type;
1296 int _flags;
1297
1298 public:
1299 enum Flags {
1300 src_null_check = 1 << 0,
1301 dst_null_check = 1 << 1,
1302 src_pos_positive_check = 1 << 2,
1303 dst_pos_positive_check = 1 << 3,
1304 length_positive_check = 1 << 4,
1305 src_range_check = 1 << 5,
1306 dst_range_check = 1 << 6,
1307 type_check = 1 << 7,
1308 overlapping = 1 << 8,
1309 unaligned = 1 << 9,
1310 src_objarray = 1 << 10,
1311 dst_objarray = 1 << 11,
1312 always_slow_path = 1 << 12,
1313 src_inlinetype_check = 1 << 13,
1314 dst_inlinetype_check = 1 << 14,
1315 all_flags = (1 << 15) - 1
1316 };
1317
1318 LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp,
1319 ciArrayKlass* expected_type, int flags, CodeEmitInfo* info);
1320
1321 LIR_Opr src() const { return _src; }
1322 LIR_Opr src_pos() const { return _src_pos; }
1323 LIR_Opr dst() const { return _dst; }
1324 LIR_Opr dst_pos() const { return _dst_pos; }
1325 LIR_Opr length() const { return _length; }
1326 LIR_Opr tmp() const { return _tmp; }
1327 int flags() const { return _flags; }
1328 ciArrayKlass* expected_type() const { return _expected_type; }
1329 ArrayCopyStub* stub() const { return _stub; }
1330
1331 virtual void emit_code(LIR_Assembler* masm);
1332 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return this; }
1333 void print_instr(outputStream* out) const PRODUCT_RETURN;
1334 };
1335
1336 // LIR_OpUpdateCRC32
1337 class LIR_OpUpdateCRC32: public LIR_Op {
1338 friend class LIR_OpVisitState;
1339
1340 private:
1341 LIR_Opr _crc;
1342 LIR_Opr _val;
1343
1344 public:
1345
1346 LIR_OpUpdateCRC32(LIR_Opr crc, LIR_Opr val, LIR_Opr res);
1347
1348 LIR_Opr crc() const { return _crc; }
1349 LIR_Opr val() const { return _val; }
1350
1351 virtual void emit_code(LIR_Assembler* masm);
1352 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return this; }
1353 void print_instr(outputStream* out) const PRODUCT_RETURN;
1354 };
1355
1356 // --------------------------------------------------
1357 // LIR_Op0
1358 // --------------------------------------------------
1359 class LIR_Op0: public LIR_Op {
1360 friend class LIR_OpVisitState;
1361
1362 public:
1363 LIR_Op0(LIR_Code code)
1364 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1365 LIR_Op0(LIR_Code code, LIR_Opr result, CodeEmitInfo* info = nullptr)
1366 : LIR_Op(code, result, info) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1367
1368 virtual void emit_code(LIR_Assembler* masm);
1369 virtual LIR_Op0* as_Op0() { return this; }
1370 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1371 };
1372
1373
1374 // --------------------------------------------------
1375 // LIR_Op1
1376 // --------------------------------------------------
1377
1378 class LIR_Op1: public LIR_Op {
1379 friend class LIR_OpVisitState;
1380
1381 protected:
1382 LIR_Opr _opr; // input operand
1383 BasicType _type; // Operand types
1384 LIR_PatchCode _patch; // only required with patchin (NEEDS_CLEANUP: do we want a special instruction for patching?)
1385
1386 static void print_patch_code(outputStream* out, LIR_PatchCode code);
1387
1388 void set_kind(LIR_MoveKind kind) {
1389 assert(code() == lir_move, "must be");
1390 _flags = kind;
1391 }
1392
1393 public:
1394 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)
1395 : LIR_Op(code, result, info)
1396 , _opr(opr)
1397 , _type(type)
1398 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1399
1400 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, BasicType type, LIR_PatchCode patch, CodeEmitInfo* info, LIR_MoveKind kind)
1401 : LIR_Op(code, result, info)
1402 , _opr(opr)
1403 , _type(type)
1404 , _patch(patch) {
1405 assert(code == lir_move, "must be");
1406 set_kind(kind);
1407 }
1408
1409 LIR_Op1(LIR_Code code, LIR_Opr opr, CodeEmitInfo* info)
1410 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1411 , _opr(opr)
1412 , _type(T_ILLEGAL)
1413 , _patch(lir_patch_none) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1414
1415 LIR_Opr in_opr() const { return _opr; }
1416 LIR_PatchCode patch_code() const { return _patch; }
1417 BasicType type() const { return _type; }
1418
1419 LIR_MoveKind move_kind() const {
1420 assert(code() == lir_move, "must be");
1421 return (LIR_MoveKind)_flags;
1422 }
1423
1424 virtual bool is_patching() { return _patch != lir_patch_none; }
1425 virtual void emit_code(LIR_Assembler* masm);
1426 virtual LIR_Op1* as_Op1() { return this; }
1427 virtual const char * name() const PRODUCT_RETURN0;
1428
1429 void set_in_opr(LIR_Opr opr) { _opr = opr; }
1430
1431 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1432 virtual void verify() const;
1433 };
1434
1435
1436 // for runtime calls
1437 class LIR_OpRTCall: public LIR_OpCall {
1438 friend class LIR_OpVisitState;
1439
1440 private:
1441 LIR_Opr _tmp;
1442 public:
1443 LIR_OpRTCall(address addr, LIR_Opr tmp,
1444 LIR_Opr result, LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1445 : LIR_OpCall(lir_rtcall, addr, result, arguments, info)
1446 , _tmp(tmp) {}
1447
1448 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1449 virtual void emit_code(LIR_Assembler* masm);
1450 virtual LIR_OpRTCall* as_OpRTCall() { return this; }
1451
1452 LIR_Opr tmp() const { return _tmp; }
1453
1454 virtual void verify() const;
1455 };
1456
1457
1458
1459 class LIR_OpReturn: public LIR_Op1 {
1460 friend class LIR_OpVisitState;
1461
1462 private:
1463 C1SafepointPollStub* _stub;
1464
1465 public:
1466 LIR_OpReturn(LIR_Opr opr);
1467
1468 C1SafepointPollStub* stub() const { return _stub; }
1469 virtual LIR_OpReturn* as_OpReturn() { return this; }
1470 };
1471
1472 class ConversionStub;
1473
1474 class LIR_OpConvert: public LIR_Op1 {
1475 friend class LIR_OpVisitState;
1476
1477 private:
1478 Bytecodes::Code _bytecode;
1479 ConversionStub* _stub;
1480
1481 public:
1482 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub)
1483 : LIR_Op1(lir_convert, opr, result)
1484 , _bytecode(code)
1485 , _stub(stub) {}
1486
1487 Bytecodes::Code bytecode() const { return _bytecode; }
1488 ConversionStub* stub() const { return _stub; }
1489
1490 virtual void emit_code(LIR_Assembler* masm);
1491 virtual LIR_OpConvert* as_OpConvert() { return this; }
1492 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1493
1494 static void print_bytecode(outputStream* out, Bytecodes::Code code) PRODUCT_RETURN;
1495 };
1496
1497
1498 // LIR_OpAllocObj
1499 class LIR_OpAllocObj : public LIR_Op1 {
1500 friend class LIR_OpVisitState;
1501
1502 private:
1503 LIR_Opr _tmp1;
1504 LIR_Opr _tmp2;
1505 LIR_Opr _tmp3;
1506 LIR_Opr _tmp4;
1507 int _hdr_size;
1508 int _obj_size;
1509 CodeStub* _stub;
1510 bool _init_check;
1511
1512 public:
1513 LIR_OpAllocObj(LIR_Opr klass, LIR_Opr result,
1514 LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1515 int hdr_size, int obj_size, bool init_check, CodeStub* stub)
1516 : LIR_Op1(lir_alloc_object, klass, result)
1517 , _tmp1(t1)
1518 , _tmp2(t2)
1519 , _tmp3(t3)
1520 , _tmp4(t4)
1521 , _hdr_size(hdr_size)
1522 , _obj_size(obj_size)
1523 , _stub(stub)
1524 , _init_check(init_check) { }
1525
1526 LIR_Opr klass() const { return in_opr(); }
1527 LIR_Opr obj() const { return result_opr(); }
1528 LIR_Opr tmp1() const { return _tmp1; }
1529 LIR_Opr tmp2() const { return _tmp2; }
1530 LIR_Opr tmp3() const { return _tmp3; }
1531 LIR_Opr tmp4() const { return _tmp4; }
1532 int header_size() const { return _hdr_size; }
1533 int object_size() const { return _obj_size; }
1534 bool init_check() const { return _init_check; }
1535 CodeStub* stub() const { return _stub; }
1536
1537 virtual void emit_code(LIR_Assembler* masm);
1538 virtual LIR_OpAllocObj * as_OpAllocObj () { return this; }
1539 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1540 };
1541
1542
1543 // LIR_OpRoundFP
1544 class LIR_OpRoundFP : public LIR_Op1 {
1545 friend class LIR_OpVisitState;
1546
1547 private:
1548 LIR_Opr _tmp;
1549
1550 public:
1551 LIR_OpRoundFP(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result)
1552 : LIR_Op1(lir_roundfp, reg, result)
1553 , _tmp(stack_loc_temp) {}
1554
1555 LIR_Opr tmp() const { return _tmp; }
1556 virtual LIR_OpRoundFP* as_OpRoundFP() { return this; }
1557 void print_instr(outputStream* out) const PRODUCT_RETURN;
1558 };
1559
1560 // LIR_OpTypeCheck
1561 class LIR_OpTypeCheck: public LIR_Op {
1562 friend class LIR_OpVisitState;
1563
1564 private:
1565 LIR_Opr _object;
1566 LIR_Opr _array;
1567 ciKlass* _klass;
1568 LIR_Opr _tmp1;
1569 LIR_Opr _tmp2;
1570 LIR_Opr _tmp3;
1571 bool _fast_check;
1572 CodeEmitInfo* _info_for_patch;
1573 CodeEmitInfo* _info_for_exception;
1574 CodeStub* _stub;
1575 ciMethod* _profiled_method;
1576 int _profiled_bci;
1577 bool _should_profile;
1578 bool _need_null_check;
1579
1580 public:
1581 LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
1582 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1583 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub, bool need_null_check = true);
1584 LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array,
1585 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception);
1586
1587 LIR_Opr object() const { return _object; }
1588 LIR_Opr array() const { assert(code() == lir_store_check, "not valid"); return _array; }
1589 LIR_Opr tmp1() const { return _tmp1; }
1590 LIR_Opr tmp2() const { return _tmp2; }
1591 LIR_Opr tmp3() const { return _tmp3; }
1592 ciKlass* klass() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _klass; }
1593 bool fast_check() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _fast_check; }
1594 CodeEmitInfo* info_for_patch() const { return _info_for_patch; }
1595 CodeEmitInfo* info_for_exception() const { return _info_for_exception; }
1596 CodeStub* stub() const { return _stub; }
1597
1598 // MethodData* profiling
1599 void set_profiled_method(ciMethod *method) { _profiled_method = method; }
1600 void set_profiled_bci(int bci) { _profiled_bci = bci; }
1601 void set_should_profile(bool b) { _should_profile = b; }
1602 ciMethod* profiled_method() const { return _profiled_method; }
1603 int profiled_bci() const { return _profiled_bci; }
1604 bool should_profile() const { return _should_profile; }
1605 bool need_null_check() const { return _need_null_check; }
1606 virtual bool is_patching() { return _info_for_patch != nullptr; }
1607 virtual void emit_code(LIR_Assembler* masm);
1608 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return this; }
1609 void print_instr(outputStream* out) const PRODUCT_RETURN;
1610 };
1611
1612 // LIR_OpFlattenedArrayCheck
1613 class LIR_OpFlattenedArrayCheck: public LIR_Op {
1614 friend class LIR_OpVisitState;
1615
1616 private:
1617 LIR_Opr _array;
1618 LIR_Opr _value;
1619 LIR_Opr _tmp;
1620 CodeStub* _stub;
1621 public:
1622 LIR_OpFlattenedArrayCheck(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
1623 LIR_Opr array() const { return _array; }
1624 LIR_Opr value() const { return _value; }
1625 LIR_Opr tmp() const { return _tmp; }
1626 CodeStub* stub() const { return _stub; }
1627
1628 virtual void emit_code(LIR_Assembler* masm);
1629 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return this; }
1630 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1631 };
1632
1633 // LIR_OpNullFreeArrayCheck
1634 class LIR_OpNullFreeArrayCheck: public LIR_Op {
1635 friend class LIR_OpVisitState;
1636
1637 private:
1638 LIR_Opr _array;
1639 LIR_Opr _tmp;
1640 public:
1641 LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp);
1642 LIR_Opr array() const { return _array; }
1643 LIR_Opr tmp() const { return _tmp; }
1644
1645 virtual void emit_code(LIR_Assembler* masm);
1646 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return this; }
1647 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1648 };
1649
1650 class LIR_OpSubstitutabilityCheck: public LIR_Op {
1651 friend class LIR_OpVisitState;
1652
1653 private:
1654 LIR_Opr _left;
1655 LIR_Opr _right;
1656 LIR_Opr _equal_result;
1657 LIR_Opr _not_equal_result;
1658 LIR_Opr _tmp1;
1659 LIR_Opr _tmp2;
1660 ciKlass* _left_klass;
1661 ciKlass* _right_klass;
1662 LIR_Opr _left_klass_op;
1663 LIR_Opr _right_klass_op;
1664 CodeStub* _stub;
1665 public:
1666 LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
1667 LIR_Opr tmp1, LIR_Opr tmp2,
1668 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
1669 CodeEmitInfo* info, CodeStub* stub);
1670
1671 LIR_Opr left() const { return _left; }
1672 LIR_Opr right() const { return _right; }
1673 LIR_Opr equal_result() const { return _equal_result; }
1674 LIR_Opr not_equal_result() const { return _not_equal_result; }
1675 LIR_Opr tmp1() const { return _tmp1; }
1676 LIR_Opr tmp2() const { return _tmp2; }
1677 ciKlass* left_klass() const { return _left_klass; }
1678 ciKlass* right_klass() const { return _right_klass; }
1679 LIR_Opr left_klass_op() const { return _left_klass_op; }
1680 LIR_Opr right_klass_op() const { return _right_klass_op; }
1681 CodeStub* stub() const { return _stub; }
1682
1683 virtual void emit_code(LIR_Assembler* masm);
1684 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return this; }
1685 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1686 };
1687
1688 // LIR_Op2
1689 class LIR_Op2: public LIR_Op {
1690 friend class LIR_OpVisitState;
1691
1692 int _fpu_stack_size; // for sin/cos implementation on Intel
1693
1694 protected:
1695 LIR_Opr _opr1;
1696 LIR_Opr _opr2;
1697 BasicType _type;
1698 LIR_Opr _tmp1;
1699 LIR_Opr _tmp2;
1700 LIR_Opr _tmp3;
1701 LIR_Opr _tmp4;
1702 LIR_Opr _tmp5;
1703 LIR_Condition _condition;
1704
1705 void verify() const;
1706
1707 public:
1708 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1709 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1710 , _fpu_stack_size(0)
1711 , _opr1(opr1)
1712 , _opr2(opr2)
1713 , _type(type)
1714 , _tmp1(LIR_OprFact::illegalOpr)
1715 , _tmp2(LIR_OprFact::illegalOpr)
1716 , _tmp3(LIR_OprFact::illegalOpr)
1717 , _tmp4(LIR_OprFact::illegalOpr)
1718 , _tmp5(LIR_OprFact::illegalOpr)
1719 , _condition(condition) {
1720 assert(code == lir_cmp || code == lir_branch || code == lir_cond_float_branch || code == lir_assert, "code check");
1721 }
1722
1723 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type)
1724 : LIR_Op(code, result, nullptr)
1725 , _fpu_stack_size(0)
1726 , _opr1(opr1)
1727 , _opr2(opr2)
1728 , _type(type)
1729 , _tmp1(LIR_OprFact::illegalOpr)
1730 , _tmp2(LIR_OprFact::illegalOpr)
1731 , _tmp3(LIR_OprFact::illegalOpr)
1732 , _tmp4(LIR_OprFact::illegalOpr)
1733 , _tmp5(LIR_OprFact::illegalOpr)
1734 , _condition(condition) {
1735 assert(code == lir_cmove, "code check");
1736 assert(type != T_ILLEGAL, "cmove should have type");
1737 }
1738
1739 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result = LIR_OprFact::illegalOpr,
1740 CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1741 : LIR_Op(code, result, info)
1742 , _fpu_stack_size(0)
1743 , _opr1(opr1)
1744 , _opr2(opr2)
1745 , _type(type)
1746 , _tmp1(LIR_OprFact::illegalOpr)
1747 , _tmp2(LIR_OprFact::illegalOpr)
1748 , _tmp3(LIR_OprFact::illegalOpr)
1749 , _tmp4(LIR_OprFact::illegalOpr)
1750 , _tmp5(LIR_OprFact::illegalOpr)
1751 , _condition(lir_cond_unknown) {
1752 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1753 }
1754
1755 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, LIR_Opr tmp1, LIR_Opr tmp2 = LIR_OprFact::illegalOpr,
1756 LIR_Opr tmp3 = LIR_OprFact::illegalOpr, LIR_Opr tmp4 = LIR_OprFact::illegalOpr, LIR_Opr tmp5 = LIR_OprFact::illegalOpr)
1757 : LIR_Op(code, result, nullptr)
1758 , _fpu_stack_size(0)
1759 , _opr1(opr1)
1760 , _opr2(opr2)
1761 , _type(T_ILLEGAL)
1762 , _tmp1(tmp1)
1763 , _tmp2(tmp2)
1764 , _tmp3(tmp3)
1765 , _tmp4(tmp4)
1766 , _tmp5(tmp5)
1767 , _condition(lir_cond_unknown) {
1768 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1769 }
1770
1771 LIR_Opr in_opr1() const { return _opr1; }
1772 LIR_Opr in_opr2() const { return _opr2; }
1773 BasicType type() const { return _type; }
1774 LIR_Opr tmp1_opr() const { return _tmp1; }
1775 LIR_Opr tmp2_opr() const { return _tmp2; }
1776 LIR_Opr tmp3_opr() const { return _tmp3; }
1777 LIR_Opr tmp4_opr() const { return _tmp4; }
1778 LIR_Opr tmp5_opr() const { return _tmp5; }
1779 LIR_Condition condition() const {
1780 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch || code() == lir_assert, "only valid for branch and assert"); return _condition;
1781 }
1782 void set_condition(LIR_Condition condition) {
1783 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch, "only valid for branch"); _condition = condition;
1784 }
1785
1786 void set_fpu_stack_size(int size) { _fpu_stack_size = size; }
1787 int fpu_stack_size() const { return _fpu_stack_size; }
1788
1789 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1790 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1791
1792 virtual void emit_code(LIR_Assembler* masm);
1793 virtual LIR_Op2* as_Op2() { return this; }
1794 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1795 };
1796
1797 class LIR_OpBranch: public LIR_Op2 {
1798 friend class LIR_OpVisitState;
1799
1800 private:
1801 Label* _label;
1802 BlockBegin* _block; // if this is a branch to a block, this is the block
1803 BlockBegin* _ublock; // if this is a float-branch, this is the unordered block
1804 CodeStub* _stub; // if this is a branch to a stub, this is the stub
1805
1806 public:
1807 LIR_OpBranch(LIR_Condition cond, Label* lbl)
1808 : LIR_Op2(lir_branch, cond, LIR_OprFact::illegalOpr, LIR_OprFact::illegalOpr, (CodeEmitInfo*) nullptr)
1809 , _label(lbl)
1810 , _block(nullptr)
1811 , _ublock(nullptr)
1812 , _stub(nullptr) { }
1813
1814 LIR_OpBranch(LIR_Condition cond, BlockBegin* block);
1815 LIR_OpBranch(LIR_Condition cond, CodeStub* stub);
1816
1817 // for unordered comparisons
1818 LIR_OpBranch(LIR_Condition cond, BlockBegin* block, BlockBegin* ublock);
1819
1820 LIR_Condition cond() const {
1821 return condition();
1822 }
1823
1824 void set_cond(LIR_Condition cond) {
1825 set_condition(cond);
1826 }
1827
1828 Label* label() const { return _label; }
1829 BlockBegin* block() const { return _block; }
1830 BlockBegin* ublock() const { return _ublock; }
1831 CodeStub* stub() const { return _stub; }
1832
1833 void change_block(BlockBegin* b);
1834 void change_ublock(BlockBegin* b);
1835 void negate_cond();
1836
1837 virtual void emit_code(LIR_Assembler* masm);
1838 virtual LIR_OpBranch* as_OpBranch() { return this; }
1839 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1840 };
1841
1842 class LIR_OpAllocArray : public LIR_Op {
1843 friend class LIR_OpVisitState;
1844
1845 private:
1846 LIR_Opr _klass;
1847 LIR_Opr _len;
1848 LIR_Opr _tmp1;
1849 LIR_Opr _tmp2;
1850 LIR_Opr _tmp3;
1851 LIR_Opr _tmp4;
1852 BasicType _type;
1853 CodeStub* _stub;
1854 bool _is_null_free;
1855
1856 public:
1857 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 is_null_free)
1858 : LIR_Op(lir_alloc_array, result, nullptr)
1859 , _klass(klass)
1860 , _len(len)
1861 , _tmp1(t1)
1862 , _tmp2(t2)
1863 , _tmp3(t3)
1864 , _tmp4(t4)
1865 , _type(type)
1866 , _stub(stub)
1867 , _is_null_free(is_null_free) {}
1868
1869 LIR_Opr klass() const { return _klass; }
1870 LIR_Opr len() const { return _len; }
1871 LIR_Opr obj() const { return result_opr(); }
1872 LIR_Opr tmp1() const { return _tmp1; }
1873 LIR_Opr tmp2() const { return _tmp2; }
1874 LIR_Opr tmp3() const { return _tmp3; }
1875 LIR_Opr tmp4() const { return _tmp4; }
1876 BasicType type() const { return _type; }
1877 CodeStub* stub() const { return _stub; }
1878 bool is_null_free() const { return _is_null_free;}
1879
1880 virtual void emit_code(LIR_Assembler* masm);
1881 virtual LIR_OpAllocArray * as_OpAllocArray () { return this; }
1882 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1883 };
1884
1885
1886 class LIR_Op3: public LIR_Op {
1887 friend class LIR_OpVisitState;
1888
1889 private:
1890 LIR_Opr _opr1;
1891 LIR_Opr _opr2;
1892 LIR_Opr _opr3;
1893 public:
1894 LIR_Op3(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr result, CodeEmitInfo* info = nullptr)
1895 : LIR_Op(code, result, info)
1896 , _opr1(opr1)
1897 , _opr2(opr2)
1898 , _opr3(opr3) { assert(is_in_range(code, begin_op3, end_op3), "code check"); }
1899 LIR_Opr in_opr1() const { return _opr1; }
1900 LIR_Opr in_opr2() const { return _opr2; }
1901 LIR_Opr in_opr3() const { return _opr3; }
1902
1903 virtual void emit_code(LIR_Assembler* masm);
1904 virtual LIR_Op3* as_Op3() { return this; }
1905 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1906 };
1907
1908 class LIR_Op4: public LIR_Op {
1909 friend class LIR_OpVisitState;
1910 protected:
1911 LIR_Opr _opr1;
1912 LIR_Opr _opr2;
1913 LIR_Opr _opr3;
1914 LIR_Opr _opr4;
1915 BasicType _type;
1916 LIR_Opr _tmp1;
1917 LIR_Opr _tmp2;
1918 LIR_Opr _tmp3;
1919 LIR_Opr _tmp4;
1920 LIR_Opr _tmp5;
1921 LIR_Condition _condition;
1922
1923 public:
1924 LIR_Op4(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr opr4,
1925 LIR_Opr result, BasicType type)
1926 : LIR_Op(code, result, nullptr)
1927 , _opr1(opr1)
1928 , _opr2(opr2)
1929 , _opr3(opr3)
1930 , _opr4(opr4)
1931 , _type(type)
1932 , _tmp1(LIR_OprFact::illegalOpr)
1933 , _tmp2(LIR_OprFact::illegalOpr)
1934 , _tmp3(LIR_OprFact::illegalOpr)
1935 , _tmp4(LIR_OprFact::illegalOpr)
1936 , _tmp5(LIR_OprFact::illegalOpr)
1937 , _condition(condition) {
1938 assert(code == lir_cmove, "code check");
1939 assert(type != T_ILLEGAL, "cmove should have type");
1940 }
1941
1942 LIR_Opr in_opr1() const { return _opr1; }
1943 LIR_Opr in_opr2() const { return _opr2; }
1944 LIR_Opr in_opr3() const { return _opr3; }
1945 LIR_Opr in_opr4() const { return _opr4; }
1946 BasicType type() const { return _type; }
1947 LIR_Opr tmp1_opr() const { return _tmp1; }
1948 LIR_Opr tmp2_opr() const { return _tmp2; }
1949 LIR_Opr tmp3_opr() const { return _tmp3; }
1950 LIR_Opr tmp4_opr() const { return _tmp4; }
1951 LIR_Opr tmp5_opr() const { return _tmp5; }
1952
1953 LIR_Condition condition() const { return _condition; }
1954 void set_condition(LIR_Condition condition) { _condition = condition; }
1955
1956 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1957 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1958 void set_in_opr3(LIR_Opr opr) { _opr3 = opr; }
1959 void set_in_opr4(LIR_Opr opr) { _opr4 = opr; }
1960 virtual void emit_code(LIR_Assembler* masm);
1961 virtual LIR_Op4* as_Op4() { return this; }
1962
1963 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1964 };
1965
1966 //--------------------------------
1967 class LabelObj: public CompilationResourceObj {
1968 private:
1969 Label _label;
1970 public:
1971 LabelObj() {}
1972 Label* label() { return &_label; }
1973 };
1974
1975
1976 class LIR_OpLock: public LIR_Op {
1977 friend class LIR_OpVisitState;
1978
1979 private:
1980 LIR_Opr _hdr;
1981 LIR_Opr _obj;
1982 LIR_Opr _lock;
1983 LIR_Opr _scratch;
1984 CodeStub* _stub;
1985 CodeStub* _throw_imse_stub;
1986 public:
1987 LIR_OpLock(LIR_Code code, LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_imse_stub=nullptr)
1988 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1989 , _hdr(hdr)
1990 , _obj(obj)
1991 , _lock(lock)
1992 , _scratch(scratch)
1993 , _stub(stub)
1994 , _throw_imse_stub(throw_imse_stub) {}
1995
1996 LIR_Opr hdr_opr() const { return _hdr; }
1997 LIR_Opr obj_opr() const { return _obj; }
1998 LIR_Opr lock_opr() const { return _lock; }
1999 LIR_Opr scratch_opr() const { return _scratch; }
2000 CodeStub* stub() const { return _stub; }
2001 CodeStub* throw_imse_stub() const { return _throw_imse_stub; }
2002
2003 virtual void emit_code(LIR_Assembler* masm);
2004 virtual LIR_OpLock* as_OpLock() { return this; }
2005 void print_instr(outputStream* out) const PRODUCT_RETURN;
2006 };
2007
2008 class LIR_OpLoadKlass: public LIR_Op {
2009 friend class LIR_OpVisitState;
2010
2011 private:
2012 LIR_Opr _obj;
2013 public:
2014 LIR_OpLoadKlass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info)
2015 : LIR_Op(lir_load_klass, result, info)
2016 , _obj(obj)
2017 {}
2018
2019 LIR_Opr obj() const { return _obj; }
2020
2021 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return this; }
2022 virtual void emit_code(LIR_Assembler* masm);
2023 void print_instr(outputStream* out) const PRODUCT_RETURN;
2024 };
2025
2026 class LIR_OpDelay: public LIR_Op {
2027 friend class LIR_OpVisitState;
2028
2029 private:
2030 LIR_Op* _op;
2031
2032 public:
2033 LIR_OpDelay(LIR_Op* op, CodeEmitInfo* info):
2034 LIR_Op(lir_delay_slot, LIR_OprFact::illegalOpr, info),
2035 _op(op) {
2036 assert(op->code() == lir_nop, "should be filling with nops");
2037 }
2038 virtual void emit_code(LIR_Assembler* masm);
2039 virtual LIR_OpDelay* as_OpDelay() { return this; }
2040 void print_instr(outputStream* out) const PRODUCT_RETURN;
2041 LIR_Op* delay_op() const { return _op; }
2042 CodeEmitInfo* call_info() const { return info(); }
2043 };
2044
2045 #ifdef ASSERT
2046 // LIR_OpAssert
2047 class LIR_OpAssert : public LIR_Op2 {
2048 friend class LIR_OpVisitState;
2049
2050 private:
2051 const char* _msg;
2052 bool _halt;
2053
2054 public:
2055 LIR_OpAssert(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, const char* msg, bool halt)
2056 : LIR_Op2(lir_assert, condition, opr1, opr2)
2057 , _msg(msg)
2058 , _halt(halt) {
2059 }
2060
2061 const char* msg() const { return _msg; }
2062 bool halt() const { return _halt; }
2063
2064 virtual void emit_code(LIR_Assembler* masm);
2065 virtual LIR_OpAssert* as_OpAssert() { return this; }
2066 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2067 };
2068 #endif
2069
2070 // LIR_OpCompareAndSwap
2071 class LIR_OpCompareAndSwap : public LIR_Op {
2072 friend class LIR_OpVisitState;
2073
2074 private:
2075 LIR_Opr _addr;
2076 LIR_Opr _cmp_value;
2077 LIR_Opr _new_value;
2078 LIR_Opr _tmp1;
2079 LIR_Opr _tmp2;
2080
2081 public:
2082 LIR_OpCompareAndSwap(LIR_Code code, LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2083 LIR_Opr t1, LIR_Opr t2, LIR_Opr result)
2084 : LIR_Op(code, result, nullptr) // no result, no info
2085 , _addr(addr)
2086 , _cmp_value(cmp_value)
2087 , _new_value(new_value)
2088 , _tmp1(t1)
2089 , _tmp2(t2) { }
2090
2091 LIR_Opr addr() const { return _addr; }
2092 LIR_Opr cmp_value() const { return _cmp_value; }
2093 LIR_Opr new_value() const { return _new_value; }
2094 LIR_Opr tmp1() const { return _tmp1; }
2095 LIR_Opr tmp2() const { return _tmp2; }
2096
2097 virtual void emit_code(LIR_Assembler* masm);
2098 virtual LIR_OpCompareAndSwap * as_OpCompareAndSwap () { return this; }
2099 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2100 };
2101
2102 // LIR_OpProfileCall
2103 class LIR_OpProfileCall : public LIR_Op {
2104 friend class LIR_OpVisitState;
2105
2106 private:
2107 ciMethod* _profiled_method;
2108 int _profiled_bci;
2109 ciMethod* _profiled_callee;
2110 LIR_Opr _mdo;
2111 LIR_Opr _recv;
2112 LIR_Opr _tmp1;
2113 ciKlass* _known_holder;
2114
2115 public:
2116 // Destroys recv
2117 LIR_OpProfileCall(ciMethod* profiled_method, int profiled_bci, ciMethod* profiled_callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* known_holder)
2118 : LIR_Op(lir_profile_call, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2119 , _profiled_method(profiled_method)
2120 , _profiled_bci(profiled_bci)
2121 , _profiled_callee(profiled_callee)
2122 , _mdo(mdo)
2123 , _recv(recv)
2124 , _tmp1(t1)
2125 , _known_holder(known_holder) { }
2126
2127 ciMethod* profiled_method() const { return _profiled_method; }
2128 int profiled_bci() const { return _profiled_bci; }
2129 ciMethod* profiled_callee() const { return _profiled_callee; }
2130 LIR_Opr mdo() const { return _mdo; }
2131 LIR_Opr recv() const { return _recv; }
2132 LIR_Opr tmp1() const { return _tmp1; }
2133 ciKlass* known_holder() const { return _known_holder; }
2134
2135 virtual void emit_code(LIR_Assembler* masm);
2136 virtual LIR_OpProfileCall* as_OpProfileCall() { return this; }
2137 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2138 bool should_profile_receiver_type() const {
2139 bool callee_is_static = _profiled_callee->is_loaded() && _profiled_callee->is_static();
2140 Bytecodes::Code bc = _profiled_method->java_code_at_bci(_profiled_bci);
2141 bool call_is_virtual = (bc == Bytecodes::_invokevirtual && !_profiled_callee->can_be_statically_bound()) || bc == Bytecodes::_invokeinterface;
2142 return C1ProfileVirtualCalls && call_is_virtual && !callee_is_static;
2143 }
2144 };
2145
2146 // LIR_OpProfileType
2147 class LIR_OpProfileType : public LIR_Op {
2148 friend class LIR_OpVisitState;
2149
2150 private:
2151 LIR_Opr _mdp;
2152 LIR_Opr _obj;
2153 LIR_Opr _tmp;
2154 ciKlass* _exact_klass; // non null if we know the klass statically (no need to load it from _obj)
2155 intptr_t _current_klass; // what the profiling currently reports
2156 bool _not_null; // true if we know statically that _obj cannot be null
2157 bool _no_conflict; // true if we're profling parameters, _exact_klass is not null and we know
2158 // _exact_klass it the only possible type for this parameter in any context.
2159
2160 public:
2161 // Destroys recv
2162 LIR_OpProfileType(LIR_Opr mdp, LIR_Opr obj, ciKlass* exact_klass, intptr_t current_klass, LIR_Opr tmp, bool not_null, bool no_conflict)
2163 : LIR_Op(lir_profile_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2164 , _mdp(mdp)
2165 , _obj(obj)
2166 , _tmp(tmp)
2167 , _exact_klass(exact_klass)
2168 , _current_klass(current_klass)
2169 , _not_null(not_null)
2170 , _no_conflict(no_conflict) { }
2171
2172 LIR_Opr mdp() const { return _mdp; }
2173 LIR_Opr obj() const { return _obj; }
2174 LIR_Opr tmp() const { return _tmp; }
2175 ciKlass* exact_klass() const { return _exact_klass; }
2176 intptr_t current_klass() const { return _current_klass; }
2177 bool not_null() const { return _not_null; }
2178 bool no_conflict() const { return _no_conflict; }
2179
2180 virtual void emit_code(LIR_Assembler* masm);
2181 virtual LIR_OpProfileType* as_OpProfileType() { return this; }
2182 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2183 };
2184
2185 // LIR_OpProfileInlineType
2186 class LIR_OpProfileInlineType : public LIR_Op {
2187 friend class LIR_OpVisitState;
2188
2189 private:
2190 LIR_Opr _mdp;
2191 LIR_Opr _obj;
2192 int _flag;
2193 LIR_Opr _tmp;
2194 bool _not_null; // true if we know statically that _obj cannot be null
2195
2196 public:
2197 // Destroys recv
2198 LIR_OpProfileInlineType(LIR_Opr mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null)
2199 : LIR_Op(lir_profile_inline_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2200 , _mdp(mdp)
2201 , _obj(obj)
2202 , _flag(flag)
2203 , _tmp(tmp)
2204 , _not_null(not_null) { }
2205
2206 LIR_Opr mdp() const { return _mdp; }
2207 LIR_Opr obj() const { return _obj; }
2208 int flag() const { return _flag; }
2209 LIR_Opr tmp() const { return _tmp; }
2210 bool not_null() const { return _not_null; }
2211
2212 virtual void emit_code(LIR_Assembler* masm);
2213 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return this; }
2214 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2215 };
2216
2217 class LIR_InsertionBuffer;
2218
2219 //--------------------------------LIR_List---------------------------------------------------
2220 // Maintains a list of LIR instructions (one instance of LIR_List per basic block)
2221 // The LIR instructions are appended by the LIR_List class itself;
2222 //
2223 // Notes:
2224 // - all offsets are(should be) in bytes
2225 // - local positions are specified with an offset, with offset 0 being local 0
2226
2227 class LIR_List: public CompilationResourceObj {
2228 private:
2229 LIR_OpList _operations;
2230
2231 Compilation* _compilation;
2232 #ifndef PRODUCT
2233 BlockBegin* _block;
2234 #endif
2235 #ifdef ASSERT
2236 const char * _file;
2237 int _line;
2238 #endif
2239 #ifdef RISCV
2240 LIR_Opr _cmp_opr1;
2241 LIR_Opr _cmp_opr2;
2242 #endif
2243
2244 public:
2245 void append(LIR_Op* op) {
2246 if (op->source() == nullptr)
2247 op->set_source(_compilation->current_instruction());
2248 #ifndef PRODUCT
2249 if (PrintIRWithLIR) {
2250 _compilation->maybe_print_current_instruction();
2251 op->print(); tty->cr();
2252 }
2253 #endif // PRODUCT
2254
2255 #ifdef RISCV
2256 set_cmp_oprs(op);
2257 // lir_cmp set cmp oprs only on riscv
2258 if (op->code() == lir_cmp) return;
2259 #endif
2260
2261 _operations.append(op);
2262
2263 #ifdef ASSERT
2264 op->verify();
2265 op->set_file_and_line(_file, _line);
2266 _file = nullptr;
2267 _line = 0;
2268 #endif
2269 }
2270
2271 LIR_List(Compilation* compilation, BlockBegin* block = nullptr);
2272
2273 #ifdef ASSERT
2274 void set_file_and_line(const char * file, int line);
2275 #endif
2276
2277 #ifdef RISCV
2278 void set_cmp_oprs(LIR_Op* op);
2279 #endif
2280
2281 //---------- accessors ---------------
2282 LIR_OpList* instructions_list() { return &_operations; }
2283 int length() const { return _operations.length(); }
2284 LIR_Op* at(int i) const { return _operations.at(i); }
2285
2286 NOT_PRODUCT(BlockBegin* block() const { return _block; });
2287
2288 // insert LIR_Ops in buffer to right places in LIR_List
2289 void append(LIR_InsertionBuffer* buffer);
2290
2291 //---------- mutators ---------------
2292 void insert_before(int i, LIR_List* op_list) { _operations.insert_before(i, op_list->instructions_list()); }
2293 void insert_before(int i, LIR_Op* op) { _operations.insert_before(i, op); }
2294 void remove_at(int i) { _operations.remove_at(i); }
2295
2296 //---------- printing -------------
2297 void print_instructions() PRODUCT_RETURN;
2298
2299
2300 //---------- instructions -------------
2301 void call_opt_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2302 address dest, LIR_OprList* arguments,
2303 CodeEmitInfo* info) {
2304 append(new LIR_OpJavaCall(lir_optvirtual_call, method, receiver, result, dest, arguments, info));
2305 }
2306 void call_static(ciMethod* method, LIR_Opr result,
2307 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2308 append(new LIR_OpJavaCall(lir_static_call, method, LIR_OprFact::illegalOpr, result, dest, arguments, info));
2309 }
2310 void call_icvirtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2311 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2312 append(new LIR_OpJavaCall(lir_icvirtual_call, method, receiver, result, dest, arguments, info));
2313 }
2314 void call_dynamic(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2315 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2316 append(new LIR_OpJavaCall(lir_dynamic_call, method, receiver, result, dest, arguments, info));
2317 }
2318
2319 void get_thread(LIR_Opr result) { append(new LIR_Op0(lir_get_thread, result)); }
2320 void membar() { append(new LIR_Op0(lir_membar)); }
2321 void membar_acquire() { append(new LIR_Op0(lir_membar_acquire)); }
2322 void membar_release() { append(new LIR_Op0(lir_membar_release)); }
2323 void membar_loadload() { append(new LIR_Op0(lir_membar_loadload)); }
2324 void membar_storestore() { append(new LIR_Op0(lir_membar_storestore)); }
2325 void membar_loadstore() { append(new LIR_Op0(lir_membar_loadstore)); }
2326 void membar_storeload() { append(new LIR_Op0(lir_membar_storeload)); }
2327
2328 void nop() { append(new LIR_Op0(lir_nop)); }
2329
2330 void std_entry(LIR_Opr receiver) { append(new LIR_Op0(lir_std_entry, receiver)); }
2331 void osr_entry(LIR_Opr osrPointer) { append(new LIR_Op0(lir_osr_entry, osrPointer)); }
2332
2333 void on_spin_wait() { append(new LIR_Op0(lir_on_spin_wait)); }
2334
2335 void branch_destination(Label* lbl) { append(new LIR_OpLabel(lbl)); }
2336
2337 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)); }
2338
2339 // result is a stack location for old backend and vreg for UseLinearScan
2340 // stack_loc_temp is an illegal register for old backend
2341 void roundfp(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result) { append(new LIR_OpRoundFP(reg, stack_loc_temp, result)); }
2342 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)); }
2343 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)); }
2344 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)); }
2345 void move_wide(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = nullptr) {
2346 if (UseCompressedOops) {
2347 append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info, lir_move_wide));
2348 } else {
2349 move(src, dst, info);
2350 }
2351 }
2352 void move_wide(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = nullptr) {
2353 if (UseCompressedOops) {
2354 append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info, lir_move_wide));
2355 } else {
2356 move(src, dst, info);
2357 }
2358 }
2359 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)); }
2360
2361 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)); }
2362 void oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info);
2363
2364 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)); }
2365 void klass2reg_patch(Metadata* o, LIR_Opr reg, CodeEmitInfo* info);
2366
2367 void safepoint(LIR_Opr tmp, CodeEmitInfo* info) { append(new LIR_Op1(lir_safepoint, tmp, info)); }
2368 void return_op(LIR_Opr result) { append(new LIR_OpReturn(result)); }
2369
2370 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)); }
2371
2372 void logical_and (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_and, left, right, dst)); }
2373 void logical_or (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_or, left, right, dst)); }
2374 void logical_xor (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_xor, left, right, dst)); }
2375
2376 void null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null = false);
2377 void throw_exception(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2378 append(new LIR_Op2(lir_throw, exceptionPC, exceptionOop, LIR_OprFact::illegalOpr, info));
2379 }
2380 void unwind_exception(LIR_Opr exceptionOop) {
2381 append(new LIR_Op1(lir_unwind, exceptionOop));
2382 }
2383
2384 void push(LIR_Opr opr) { append(new LIR_Op1(lir_push, opr)); }
2385 void pop(LIR_Opr reg) { append(new LIR_Op1(lir_pop, reg)); }
2386
2387 void cmp(LIR_Condition condition, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info = nullptr) {
2388 append(new LIR_Op2(lir_cmp, condition, left, right, info));
2389 }
2390 void cmp(LIR_Condition condition, LIR_Opr left, int right, CodeEmitInfo* info = nullptr) {
2391 cmp(condition, left, LIR_OprFact::intConst(right), info);
2392 }
2393
2394 void cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info);
2395 void cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info);
2396
2397 void cmove(LIR_Condition condition, LIR_Opr src1, LIR_Opr src2, LIR_Opr dst, BasicType type,
2398 LIR_Opr cmp_opr1 = LIR_OprFact::illegalOpr, LIR_Opr cmp_opr2 = LIR_OprFact::illegalOpr) {
2399 append(new LIR_Op4(lir_cmove, condition, src1, src2, cmp_opr1, cmp_opr2, dst, type));
2400 }
2401
2402 void cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2403 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2404 void cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2405 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2406 void cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2407 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2408
2409 void abs (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_abs , from, tmp, to)); }
2410 void negate(LIR_Opr from, LIR_Opr to, LIR_Opr tmp = LIR_OprFact::illegalOpr) { append(new LIR_Op2(lir_neg, from, tmp, to)); }
2411 void sqrt(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_sqrt, from, tmp, to)); }
2412 void fmad(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmad, from, from1, from2, to)); }
2413 void fmaf(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmaf, from, from1, from2, to)); }
2414 void log10 (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_log10, from, LIR_OprFact::illegalOpr, to, tmp)); }
2415 void tan (LIR_Opr from, LIR_Opr to, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_Op2(lir_tan , from, tmp1, to, tmp2)); }
2416 void f2hf(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_f2hf, from, tmp, to)); }
2417 void hf2f(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_hf2f, from, tmp, to)); }
2418
2419 void add (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_add, left, right, res)); }
2420 void sub (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_sub, left, right, res, info)); }
2421 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_mul, left, right, res)); }
2422 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_mul, left, right, res, tmp)); }
2423 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_div, left, right, res, info)); }
2424 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_div, left, right, res, tmp)); }
2425 void rem (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_rem, left, right, res, info)); }
2426
2427 void volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2428 void volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2429
2430 void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2431
2432 void store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2433 void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2434 void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2435 void volatile_store_mem_reg(LIR_Opr src, LIR_Address* address, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2436 void volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2437
2438 void idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2439 void idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2440 void irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2441 void irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2442
2443 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);
2444 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 is_null_free);
2445
2446 // jump is an unconditional branch
2447 void jump(BlockBegin* block) {
2448 append(new LIR_OpBranch(lir_cond_always, block));
2449 }
2450 void jump(CodeStub* stub) {
2451 append(new LIR_OpBranch(lir_cond_always, stub));
2452 }
2453 void branch(LIR_Condition cond, Label* lbl) {
2454 append(new LIR_OpBranch(cond, lbl));
2455 }
2456 // Should not be used for fp comparisons
2457 void branch(LIR_Condition cond, BlockBegin* block) {
2458 append(new LIR_OpBranch(cond, block));
2459 }
2460 // Should not be used for fp comparisons
2461 void branch(LIR_Condition cond, CodeStub* stub) {
2462 append(new LIR_OpBranch(cond, stub));
2463 }
2464 // Should only be used for fp comparisons
2465 void branch(LIR_Condition cond, BlockBegin* block, BlockBegin* unordered) {
2466 append(new LIR_OpBranch(cond, block, unordered));
2467 }
2468
2469 void shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2470 void shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2471 void unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2472
2473 void shift_left(LIR_Opr value, int count, LIR_Opr dst) { shift_left(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2474 void shift_right(LIR_Opr value, int count, LIR_Opr dst) { shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2475 void unsigned_shift_right(LIR_Opr value, int count, LIR_Opr dst) { unsigned_shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2476
2477 void lcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_cmp_l2i, left, right, dst)); }
2478 void fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less);
2479
2480 void call_runtime_leaf(address routine, LIR_Opr tmp, LIR_Opr result, LIR_OprList* arguments) {
2481 append(new LIR_OpRTCall(routine, tmp, result, arguments));
2482 }
2483
2484 void call_runtime(address routine, LIR_Opr tmp, LIR_Opr result,
2485 LIR_OprList* arguments, CodeEmitInfo* info) {
2486 append(new LIR_OpRTCall(routine, tmp, result, arguments, info));
2487 }
2488
2489 void load_stack_address_monitor(int monitor_ix, LIR_Opr dst) { append(new LIR_Op1(lir_monaddr, LIR_OprFact::intConst(monitor_ix), dst)); }
2490 void unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub);
2491 void lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_imse_stub=nullptr);
2492
2493 void breakpoint() { append(new LIR_Op0(lir_breakpoint)); }
2494
2495 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)); }
2496
2497 void update_crc32(LIR_Opr crc, LIR_Opr val, LIR_Opr res) { append(new LIR_OpUpdateCRC32(crc, val, res)); }
2498
2499 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);
2500 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);
2501 void check_flat_array(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
2502 void check_null_free_array(LIR_Opr array, LIR_Opr tmp);
2503 void substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
2504 LIR_Opr tmp1, LIR_Opr tmp2,
2505 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
2506 CodeEmitInfo* info, CodeStub* stub);
2507
2508 void checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
2509 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
2510 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
2511 ciMethod* profiled_method, int profiled_bci, bool is_null_free);
2512 // MethodData* profiling
2513 void profile_call(ciMethod* method, int bci, ciMethod* callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* cha_klass) {
2514 append(new LIR_OpProfileCall(method, bci, callee, mdo, recv, t1, cha_klass));
2515 }
2516 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) {
2517 append(new LIR_OpProfileType(LIR_OprFact::address(mdp), obj, exact_klass, current_klass, tmp, not_null, no_conflict));
2518 }
2519 void profile_inline_type(LIR_Address* mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null) {
2520 append(new LIR_OpProfileInlineType(LIR_OprFact::address(mdp), obj, flag, tmp, not_null));
2521 }
2522
2523 void xadd(LIR_Opr src, LIR_Opr add, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xadd, src, add, res, tmp)); }
2524 void xchg(LIR_Opr src, LIR_Opr set, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xchg, src, set, res, tmp)); }
2525
2526 void load_klass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info) { append(new LIR_OpLoadKlass(obj, result, info)); }
2527
2528 #ifdef ASSERT
2529 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)); }
2530 #endif
2531 };
2532
2533 void print_LIR(BlockList* blocks);
2534
2535 class LIR_InsertionBuffer : public CompilationResourceObj {
2536 private:
2537 LIR_List* _lir; // the lir list where ops of this buffer should be inserted later (null when uninitialized)
2538
2539 // list of insertion points. index and count are stored alternately:
2540 // _index_and_count[i * 2]: the index into lir list where "count" ops should be inserted
2541 // _index_and_count[i * 2 + 1]: the number of ops to be inserted at index
2542 intStack _index_and_count;
2543
2544 // the LIR_Ops to be inserted
2545 LIR_OpList _ops;
2546
2547 void append_new(int index, int count) { _index_and_count.append(index); _index_and_count.append(count); }
2548 void set_index_at(int i, int value) { _index_and_count.at_put((i << 1), value); }
2549 void set_count_at(int i, int value) { _index_and_count.at_put((i << 1) + 1, value); }
2550
2551 #ifdef ASSERT
2552 void verify();
2553 #endif
2554 public:
2555 LIR_InsertionBuffer() : _lir(nullptr), _index_and_count(8), _ops(8) { }
2556
2557 // must be called before using the insertion buffer
2558 void init(LIR_List* lir) { assert(!initialized(), "already initialized"); _lir = lir; _index_and_count.clear(); _ops.clear(); }
2559 bool initialized() const { return _lir != nullptr; }
2560 // called automatically when the buffer is appended to the LIR_List
2561 void finish() { _lir = nullptr; }
2562
2563 // accessors
2564 LIR_List* lir_list() const { return _lir; }
2565 int number_of_insertion_points() const { return _index_and_count.length() >> 1; }
2566 int index_at(int i) const { return _index_and_count.at((i << 1)); }
2567 int count_at(int i) const { return _index_and_count.at((i << 1) + 1); }
2568
2569 int number_of_ops() const { return _ops.length(); }
2570 LIR_Op* op_at(int i) const { return _ops.at(i); }
2571
2572 // append an instruction to the buffer
2573 void append(int index, LIR_Op* op);
2574
2575 // instruction
2576 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)); }
2577 };
2578
2579
2580 //
2581 // LIR_OpVisitState is used for manipulating LIR_Ops in an abstract way.
2582 // Calling a LIR_Op's visit function with a LIR_OpVisitState causes
2583 // information about the input, output and temporaries used by the
2584 // op to be recorded. It also records whether the op has call semantics
2585 // and also records all the CodeEmitInfos used by this op.
2586 //
2587
2588
2589 class LIR_OpVisitState: public StackObj {
2590 public:
2591 typedef enum { inputMode, firstMode = inputMode, tempMode, outputMode, numModes, invalidMode = -1 } OprMode;
2592
2593 enum {
2594 maxNumberOfOperands = 21,
2595 maxNumberOfInfos = 4
2596 };
2597
2598 private:
2599 LIR_Op* _op;
2600
2601 // optimization: the operands and infos are not stored in a variable-length
2602 // list, but in a fixed-size array to save time of size checks and resizing
2603 int _oprs_len[numModes];
2604 LIR_Opr* _oprs_new[numModes][maxNumberOfOperands];
2605 int _info_len;
2606 CodeEmitInfo* _info_new[maxNumberOfInfos];
2607
2608 bool _has_call;
2609 bool _has_slow_case;
2610
2611
2612 // only include register operands
2613 // addresses are decomposed to the base and index registers
2614 // constants and stack operands are ignored
2615 void append(LIR_Opr& opr, OprMode mode) {
2616 assert(opr->is_valid(), "should not call this otherwise");
2617 assert(mode >= 0 && mode < numModes, "bad mode");
2618
2619 if (opr->is_register()) {
2620 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2621 _oprs_new[mode][_oprs_len[mode]++] = &opr;
2622
2623 } else if (opr->is_pointer()) {
2624 LIR_Address* address = opr->as_address_ptr();
2625 if (address != nullptr) {
2626 // special handling for addresses: add base and index register of the address
2627 // both are always input operands or temp if we want to extend
2628 // their liveness!
2629 if (mode == outputMode) {
2630 mode = inputMode;
2631 }
2632 assert (mode == inputMode || mode == tempMode, "input or temp only for addresses");
2633 if (address->_base->is_valid()) {
2634 assert(address->_base->is_register(), "must be");
2635 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2636 _oprs_new[mode][_oprs_len[mode]++] = &address->_base;
2637 }
2638 if (address->_index->is_valid()) {
2639 assert(address->_index->is_register(), "must be");
2640 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2641 _oprs_new[mode][_oprs_len[mode]++] = &address->_index;
2642 }
2643
2644 } else {
2645 assert(opr->is_constant(), "constant operands are not processed");
2646 }
2647 } else {
2648 assert(opr->is_stack(), "stack operands are not processed");
2649 }
2650 }
2651
2652 void append(CodeEmitInfo* info) {
2653 assert(info != nullptr, "should not call this otherwise");
2654 assert(_info_len < maxNumberOfInfos, "array overflow");
2655 _info_new[_info_len++] = info;
2656 }
2657
2658 public:
2659 LIR_OpVisitState() { reset(); }
2660
2661 LIR_Op* op() const { return _op; }
2662 void set_op(LIR_Op* op) { reset(); _op = op; }
2663
2664 bool has_call() const { return _has_call; }
2665 bool has_slow_case() const { return _has_slow_case; }
2666
2667 void reset() {
2668 _op = nullptr;
2669 _has_call = false;
2670 _has_slow_case = false;
2671
2672 _oprs_len[inputMode] = 0;
2673 _oprs_len[tempMode] = 0;
2674 _oprs_len[outputMode] = 0;
2675 _info_len = 0;
2676 }
2677
2678
2679 int opr_count(OprMode mode) const {
2680 assert(mode >= 0 && mode < numModes, "bad mode");
2681 return _oprs_len[mode];
2682 }
2683
2684 LIR_Opr opr_at(OprMode mode, int index) const {
2685 assert(mode >= 0 && mode < numModes, "bad mode");
2686 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2687 return *_oprs_new[mode][index];
2688 }
2689
2690 void set_opr_at(OprMode mode, int index, LIR_Opr opr) const {
2691 assert(mode >= 0 && mode < numModes, "bad mode");
2692 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2693 *_oprs_new[mode][index] = opr;
2694 }
2695
2696 int info_count() const {
2697 return _info_len;
2698 }
2699
2700 CodeEmitInfo* info_at(int index) const {
2701 assert(index < _info_len, "index out of bounds");
2702 return _info_new[index];
2703 }
2704
2705 XHandlers* all_xhandler();
2706
2707 // collects all register operands of the instruction
2708 void visit(LIR_Op* op);
2709
2710 #ifdef ASSERT
2711 // check that an operation has no operands
2712 bool no_operands(LIR_Op* op);
2713 #endif
2714
2715 // LIR_Op visitor functions use these to fill in the state
2716 void do_input(LIR_Opr& opr) { append(opr, LIR_OpVisitState::inputMode); }
2717 void do_output(LIR_Opr& opr) { append(opr, LIR_OpVisitState::outputMode); }
2718 void do_temp(LIR_Opr& opr) { append(opr, LIR_OpVisitState::tempMode); }
2719 void do_info(CodeEmitInfo* info) { append(info); }
2720
2721 void do_stub(CodeStub* stub);
2722 void do_call() { _has_call = true; }
2723 void do_slow_case() { _has_slow_case = true; }
2724 void do_slow_case(CodeEmitInfo* info) {
2725 _has_slow_case = true;
2726 append(info);
2727 }
2728 };
2729
2730
2731 inline LIR_Opr LIR_Opr::illegalOpr() { return LIR_OprFact::illegalOpr; };
2732
2733 inline LIR_Opr LIR_Opr::nullOpr() { return LIR_OprFact::nullOpr; };
2734
2735 #endif // SHARE_C1_C1_LIR_HPP