1 /*
2 * Copyright (c) 2000, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_C1_C1_LIR_HPP
26 #define SHARE_C1_C1_LIR_HPP
27
28 #include "c1/c1_Defs.hpp"
29 #include "c1/c1_ValueType.hpp"
30 #include "oops/method.hpp"
31 #include "utilities/globalDefinitions.hpp"
32 #include "utilities/macros.hpp"
33
34 class BlockBegin;
35 class BlockList;
36 class LIR_Assembler;
37 class CodeEmitInfo;
38 class CodeStub;
39 class CodeStubList;
40 class C1SafepointPollStub;
41 class ArrayCopyStub;
42 class LIR_Op;
43 class ciType;
44 class ValueType;
45 class LIR_OpVisitState;
46 class FpuStackSim;
47
48 //---------------------------------------------------------------------
49 // LIR Operands
50 // LIR_OprPtr
51 // LIR_Const
52 // LIR_Address
53 //---------------------------------------------------------------------
54 class LIR_OprPtr;
55 class LIR_Const;
56 class LIR_Address;
57 class LIR_OprVisitor;
58 class LIR_Opr;
59
60 typedef int RegNr;
61
62 typedef GrowableArray<LIR_Opr> LIR_OprList;
63 typedef GrowableArray<LIR_Op*> LIR_OpArray;
64 typedef GrowableArray<LIR_Op*> LIR_OpList;
65
66 // define LIR_OprPtr early so LIR_Opr can refer to it
67 class LIR_OprPtr: public CompilationResourceObj {
68 public:
69 bool is_oop_pointer() const { return (type() == T_OBJECT); }
70 bool is_float_kind() const { BasicType t = type(); return (t == T_FLOAT) || (t == T_DOUBLE); }
71
72 virtual LIR_Const* as_constant() { return nullptr; }
73 virtual LIR_Address* as_address() { return nullptr; }
74 virtual BasicType type() const = 0;
75 virtual void print_value_on(outputStream* out) const = 0;
76 };
77
78
79
80 // LIR constants
81 class LIR_Const: public LIR_OprPtr {
82 private:
83 JavaValue _value;
84
85 void type_check(BasicType t) const { assert(type() == t, "type check"); }
86 void type_check(BasicType t1, BasicType t2) const { assert(type() == t1 || type() == t2, "type check"); }
87 void type_check(BasicType t1, BasicType t2, BasicType t3) const { assert(type() == t1 || type() == t2 || type() == t3, "type check"); }
88
89 public:
90 LIR_Const(jint i, bool is_address=false) { _value.set_type(is_address?T_ADDRESS:T_INT); _value.set_jint(i); }
91 LIR_Const(jlong l) { _value.set_type(T_LONG); _value.set_jlong(l); }
92 LIR_Const(jfloat f) { _value.set_type(T_FLOAT); _value.set_jfloat(f); }
93 LIR_Const(jdouble d) { _value.set_type(T_DOUBLE); _value.set_jdouble(d); }
94 LIR_Const(jobject o) { _value.set_type(T_OBJECT); _value.set_jobject(o); }
95 LIR_Const(void* p) {
96 #ifdef _LP64
97 assert(sizeof(jlong) >= sizeof(p), "too small");;
98 _value.set_type(T_LONG); _value.set_jlong((jlong)p);
99 #else
100 assert(sizeof(jint) >= sizeof(p), "too small");;
101 _value.set_type(T_INT); _value.set_jint((jint)p);
102 #endif
103 }
104 LIR_Const(Metadata* m) {
105 _value.set_type(T_METADATA);
106 #ifdef _LP64
107 _value.set_jlong((jlong)m);
108 #else
109 _value.set_jint((jint)m);
110 #endif // _LP64
111 }
112
113 virtual BasicType type() const { return _value.get_type(); }
114 virtual LIR_Const* as_constant() { return this; }
115
116 jint as_jint() const { type_check(T_INT, T_ADDRESS); return _value.get_jint(); }
117 jlong as_jlong() const { type_check(T_LONG ); return _value.get_jlong(); }
118 jfloat as_jfloat() const { type_check(T_FLOAT ); return _value.get_jfloat(); }
119 jdouble as_jdouble() const { type_check(T_DOUBLE); return _value.get_jdouble(); }
120 jobject as_jobject() const { type_check(T_OBJECT); return _value.get_jobject(); }
121 jint as_jint_lo() const { type_check(T_LONG ); return low(_value.get_jlong()); }
122 jint as_jint_hi() const { type_check(T_LONG ); return high(_value.get_jlong()); }
123
124 #ifdef _LP64
125 address as_pointer() const { type_check(T_LONG ); return (address)_value.get_jlong(); }
126 Metadata* as_metadata() const { type_check(T_METADATA); return (Metadata*)_value.get_jlong(); }
127 #else
128 address as_pointer() const { type_check(T_INT ); return (address)_value.get_jint(); }
129 Metadata* as_metadata() const { type_check(T_METADATA); return (Metadata*)_value.get_jint(); }
130 #endif
131
132
133 jint as_jint_bits() const { type_check(T_FLOAT, T_INT, T_ADDRESS); return _value.get_jint(); }
134 jint as_jint_lo_bits() const {
135 if (type() == T_DOUBLE) {
136 return low(jlong_cast(_value.get_jdouble()));
137 } else {
138 return as_jint_lo();
139 }
140 }
141 jint as_jint_hi_bits() const {
142 if (type() == T_DOUBLE) {
143 return high(jlong_cast(_value.get_jdouble()));
144 } else {
145 return as_jint_hi();
146 }
147 }
148 jlong as_jlong_bits() const {
149 if (type() == T_DOUBLE) {
150 return jlong_cast(_value.get_jdouble());
151 } else {
152 return as_jlong();
153 }
154 }
155
156 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
157
158
159 bool is_zero_float() {
160 jfloat f = as_jfloat();
161 jfloat ok = 0.0f;
162 return jint_cast(f) == jint_cast(ok);
163 }
164
165 bool is_one_float() {
166 jfloat f = as_jfloat();
167 return !g_isnan(f) && g_isfinite(f) && f == 1.0;
168 }
169
170 bool is_zero_double() {
171 jdouble d = as_jdouble();
172 jdouble ok = 0.0;
173 return jlong_cast(d) == jlong_cast(ok);
174 }
175
176 bool is_one_double() {
177 jdouble d = as_jdouble();
178 return !g_isnan(d) && g_isfinite(d) && d == 1.0;
179 }
180 };
181
182
183 //---------------------LIR Operand descriptor------------------------------------
184 //
185 // The class LIR_Opr represents a LIR instruction operand;
186 // it can be a register (ALU/FPU), stack location or a constant;
187 // Constants and addresses are represented as resource area allocated
188 // structures (see above), and pointers are stored in the _value field (cast to
189 // an intptr_t).
190 // Registers and stack locations are represented inline as integers.
191 // (see value function).
192
193 // Previously, this class was derived from CompilationResourceObj.
194 // However, deriving from any of the "Obj" types in allocation.hpp seems
195 // detrimental, since in some build modes it would add a vtable to this class,
196 // which make it no longer be a 1-word trivially-copyable wrapper object,
197 // which is the entire point of it.
198
199 class LIR_Opr {
200 public:
201 // value structure:
202 // data other-non-data opr-type opr-kind
203 // +-------------------+--------------+-------+-----+
204 // [max...............................|6 5 4 3|2 1 0]
205 // ^
206 // is_pointer bit
207 //
208 // lowest bit cleared, means it is a structure pointer
209 // we need 4 bits to represent types
210
211 private:
212 friend class LIR_OprFact;
213
214 intptr_t _value;
215 // Conversion
216 intptr_t value() const { return _value; }
217
218 bool check_value_mask(intptr_t mask, intptr_t masked_value) const {
219 return (value() & mask) == masked_value;
220 }
221
222 enum OprKind {
223 pointer_value = 0
224 , stack_value = 1
225 , cpu_register = 3
226 , fpu_register = 5
227 , illegal_value = 7
228 };
229
230 enum OprBits {
231 pointer_bits = 1
232 , kind_bits = 3
233 , type_bits = 4
234 , size_bits = 2
235 , destroys_bits = 1
236 , virtual_bits = 1
237 , is_xmm_bits = 1
238 , last_use_bits = 1
239 , is_fpu_stack_offset_bits = 1 // used in assertion checking on x86 for FPU stack slot allocation
240 , non_data_bits = kind_bits + type_bits + size_bits + destroys_bits + virtual_bits
241 + is_xmm_bits + last_use_bits + is_fpu_stack_offset_bits
242 , data_bits = BitsPerInt - non_data_bits
243 , reg_bits = data_bits / 2 // for two registers in one value encoding
244 };
245
246 enum OprShift : uintptr_t {
247 kind_shift = 0
248 , type_shift = kind_shift + kind_bits
249 , size_shift = type_shift + type_bits
250 , destroys_shift = size_shift + size_bits
251 , last_use_shift = destroys_shift + destroys_bits
252 , is_fpu_stack_offset_shift = last_use_shift + last_use_bits
253 , virtual_shift = is_fpu_stack_offset_shift + is_fpu_stack_offset_bits
254 , is_xmm_shift = virtual_shift + virtual_bits
255 , data_shift = is_xmm_shift + is_xmm_bits
256 , reg1_shift = data_shift
257 , reg2_shift = data_shift + reg_bits
258
259 };
260
261 enum OprSize {
262 single_size = 0 << size_shift
263 , double_size = 1 << size_shift
264 };
265
266 enum OprMask {
267 kind_mask = right_n_bits(kind_bits)
268 , type_mask = right_n_bits(type_bits) << type_shift
269 , size_mask = right_n_bits(size_bits) << size_shift
270 , last_use_mask = right_n_bits(last_use_bits) << last_use_shift
271 , is_fpu_stack_offset_mask = right_n_bits(is_fpu_stack_offset_bits) << is_fpu_stack_offset_shift
272 , virtual_mask = right_n_bits(virtual_bits) << virtual_shift
273 , is_xmm_mask = right_n_bits(is_xmm_bits) << is_xmm_shift
274 , pointer_mask = right_n_bits(pointer_bits)
275 , lower_reg_mask = right_n_bits(reg_bits)
276 , no_type_mask = (int)(~(type_mask | last_use_mask | is_fpu_stack_offset_mask))
277 };
278
279 uint32_t data() const { return (uint32_t)value() >> data_shift; }
280 int lo_reg_half() const { return data() & lower_reg_mask; }
281 int hi_reg_half() const { return (data() >> reg_bits) & lower_reg_mask; }
282 OprKind kind_field() const { return (OprKind)(value() & kind_mask); }
283 OprSize size_field() const { return (OprSize)(value() & size_mask); }
284
285 static char type_char(BasicType t);
286
287 public:
288 LIR_Opr() : _value(0) {}
289 LIR_Opr(intptr_t val) : _value(val) {}
290 LIR_Opr(LIR_OprPtr *val) : _value(reinterpret_cast<intptr_t>(val)) {}
291 bool operator==(const LIR_Opr &other) const { return _value == other._value; }
292 bool operator!=(const LIR_Opr &other) const { return _value != other._value; }
293 explicit operator bool() const { return _value != 0; }
294
295 // UGLY HACK: make this value object look like a pointer (to itself). This
296 // operator overload should be removed, and all callers updated from
297 // `opr->fn()` to `opr.fn()`.
298 const LIR_Opr* operator->() const { return this; }
299 LIR_Opr* operator->() { return this; }
300
301 enum {
302 vreg_base = ConcreteRegisterImpl::number_of_registers,
303 data_max = (1 << data_bits) - 1, // max unsigned value for data bit field
304 vreg_limit = 10000, // choose a reasonable limit,
305 vreg_max = MIN2(vreg_limit, data_max) // and make sure if fits in the bit field
306 };
307
308 static inline LIR_Opr illegalOpr();
309 static inline LIR_Opr nullOpr();
310
311 enum OprType {
312 unknown_type = 0 << type_shift // means: not set (catch uninitialized types)
313 , int_type = 1 << type_shift
314 , long_type = 2 << type_shift
315 , object_type = 3 << type_shift
316 , address_type = 4 << type_shift
317 , float_type = 5 << type_shift
318 , double_type = 6 << type_shift
319 , metadata_type = 7 << type_shift
320 };
321 friend OprType as_OprType(BasicType t);
322 friend BasicType as_BasicType(OprType t);
323
324 OprType type_field_valid() const { assert(is_register() || is_stack(), "should not be called otherwise"); return (OprType)(value() & type_mask); }
325 OprType type_field() const { return is_illegal() ? unknown_type : (OprType)(value() & type_mask); }
326
327 static OprSize size_for(BasicType t) {
328 switch (t) {
329 case T_LONG:
330 case T_DOUBLE:
331 return double_size;
332 break;
333
334 case T_FLOAT:
335 case T_BOOLEAN:
336 case T_CHAR:
337 case T_BYTE:
338 case T_SHORT:
339 case T_INT:
340 case T_ADDRESS:
341 case T_OBJECT:
342 case T_ARRAY:
343 case T_METADATA:
344 return single_size;
345 break;
346
347 default:
348 ShouldNotReachHere();
349 return single_size;
350 }
351 }
352
353
354 void validate_type() const PRODUCT_RETURN;
355
356 BasicType type() const {
357 if (is_pointer()) {
358 return pointer()->type();
359 }
360 return as_BasicType(type_field());
361 }
362
363
364 ValueType* value_type() const { return as_ValueType(type()); }
365
366 char type_char() const { return type_char((is_pointer()) ? pointer()->type() : type()); }
367
368 bool is_equal(LIR_Opr opr) const { return *this == opr; }
369 // checks whether types are same
370 bool is_same_type(LIR_Opr opr) const {
371 assert(type_field() != unknown_type &&
372 opr->type_field() != unknown_type, "shouldn't see unknown_type");
373 return type_field() == opr->type_field();
374 }
375 bool is_same_register(LIR_Opr opr) {
376 return (is_register() && opr->is_register() &&
377 kind_field() == opr->kind_field() &&
378 (value() & no_type_mask) == (opr->value() & no_type_mask));
379 }
380
381 bool is_pointer() const { return check_value_mask(pointer_mask, pointer_value); }
382 bool is_illegal() const { return kind_field() == illegal_value; }
383 bool is_valid() const { return kind_field() != illegal_value; }
384
385 bool is_register() const { return is_cpu_register() || is_fpu_register(); }
386 bool is_virtual() const { return is_virtual_cpu() || is_virtual_fpu(); }
387
388 bool is_constant() const { return is_pointer() && pointer()->as_constant() != nullptr; }
389 bool is_address() const { return is_pointer() && pointer()->as_address() != nullptr; }
390
391 bool is_float_kind() const { return is_pointer() ? pointer()->is_float_kind() : (kind_field() == fpu_register); }
392 bool is_oop() const;
393
394 // semantic for fpu- and xmm-registers:
395 // * is_float and is_double return true for xmm_registers
396 // (so is_single_fpu and is_single_xmm are true)
397 // * So you must always check for is_???_xmm prior to is_???_fpu to
398 // distinguish between fpu- and xmm-registers
399
400 bool is_stack() const { validate_type(); return check_value_mask(kind_mask, stack_value); }
401 bool is_single_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | single_size); }
402 bool is_double_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | double_size); }
403
404 bool is_cpu_register() const { validate_type(); return check_value_mask(kind_mask, cpu_register); }
405 bool is_virtual_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register | virtual_mask); }
406 bool is_fixed_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register); }
407 bool is_single_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | single_size); }
408 bool is_double_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | double_size); }
409
410 bool is_fpu_register() const { validate_type(); return check_value_mask(kind_mask, fpu_register); }
411 bool is_virtual_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register | virtual_mask); }
412 bool is_fixed_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register); }
413 bool is_single_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | single_size); }
414 bool is_double_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | double_size); }
415
416 bool is_xmm_register() const { validate_type(); return check_value_mask(kind_mask | is_xmm_mask, fpu_register | is_xmm_mask); }
417 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); }
418 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); }
419
420 // fast accessor functions for special bits that do not work for pointers
421 // (in this functions, the check for is_pointer() is omitted)
422 bool is_single_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, single_size); }
423 bool is_double_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, double_size); }
424 bool is_virtual_register() const { assert(is_register(), "type check"); return check_value_mask(virtual_mask, virtual_mask); }
425 bool is_oop_register() const { assert(is_register() || is_stack(), "type check"); return type_field_valid() == object_type; }
426 BasicType type_register() const { assert(is_register() || is_stack(), "type check"); return as_BasicType(type_field_valid()); }
427
428 bool is_last_use() const { assert(is_register(), "only works for registers"); return (value() & last_use_mask) != 0; }
429 bool is_fpu_stack_offset() const { assert(is_register(), "only works for registers"); return (value() & is_fpu_stack_offset_mask) != 0; }
430 LIR_Opr make_last_use() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | last_use_mask); }
431 LIR_Opr make_fpu_stack_offset() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | is_fpu_stack_offset_mask); }
432
433
434 int single_stack_ix() const { assert(is_single_stack() && !is_virtual(), "type check"); return (int)data(); }
435 int double_stack_ix() const { assert(is_double_stack() && !is_virtual(), "type check"); return (int)data(); }
436 RegNr cpu_regnr() const { assert(is_single_cpu() && !is_virtual(), "type check"); return (RegNr)data(); }
437 RegNr cpu_regnrLo() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
438 RegNr cpu_regnrHi() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
439 RegNr fpu_regnr() const { assert(is_single_fpu() && !is_virtual(), "type check"); return (RegNr)data(); }
440 RegNr fpu_regnrLo() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
441 RegNr fpu_regnrHi() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
442 RegNr xmm_regnr() const { assert(is_single_xmm() && !is_virtual(), "type check"); return (RegNr)data(); }
443 RegNr xmm_regnrLo() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
444 RegNr xmm_regnrHi() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
445 int vreg_number() const { assert(is_virtual(), "type check"); return (RegNr)data(); }
446
447 LIR_OprPtr* pointer() const { assert(_value != 0 && is_pointer(), "nullness and type check"); return (LIR_OprPtr*)_value; }
448 LIR_Const* as_constant_ptr() const { return pointer()->as_constant(); }
449 LIR_Address* as_address_ptr() const { return pointer()->as_address(); }
450
451 Register as_register() const;
452 Register as_register_lo() const;
453 Register as_register_hi() const;
454
455 Register as_pointer_register() {
456 #ifdef _LP64
457 if (is_double_cpu()) {
458 assert(as_register_lo() == as_register_hi(), "should be a single register");
459 return as_register_lo();
460 }
461 #endif
462 return as_register();
463 }
464
465 FloatRegister as_float_reg () const;
466 FloatRegister as_double_reg () const;
467 #ifdef X86
468 XMMRegister as_xmm_float_reg () const;
469 XMMRegister as_xmm_double_reg() const;
470 // for compatibility with RInfo
471 int fpu() const { return lo_reg_half(); }
472 #endif
473
474 jint as_jint() const { return as_constant_ptr()->as_jint(); }
475 jlong as_jlong() const { return as_constant_ptr()->as_jlong(); }
476 jfloat as_jfloat() const { return as_constant_ptr()->as_jfloat(); }
477 jdouble as_jdouble() const { return as_constant_ptr()->as_jdouble(); }
478 jobject as_jobject() const { return as_constant_ptr()->as_jobject(); }
479
480 void print() const PRODUCT_RETURN;
481 void print(outputStream* out) const PRODUCT_RETURN;
482 };
483
484 inline LIR_Opr::OprType as_OprType(BasicType type) {
485 switch (type) {
486 case T_INT: return LIR_Opr::int_type;
487 case T_LONG: return LIR_Opr::long_type;
488 case T_FLOAT: return LIR_Opr::float_type;
489 case T_DOUBLE: return LIR_Opr::double_type;
490 case T_OBJECT:
491 case T_ARRAY: return LIR_Opr::object_type;
492 case T_ADDRESS: return LIR_Opr::address_type;
493 case T_METADATA: return LIR_Opr::metadata_type;
494 case T_ILLEGAL: // fall through
495 default: ShouldNotReachHere(); return LIR_Opr::unknown_type;
496 }
497 }
498
499 inline BasicType as_BasicType(LIR_Opr::OprType t) {
500 switch (t) {
501 case LIR_Opr::int_type: return T_INT;
502 case LIR_Opr::long_type: return T_LONG;
503 case LIR_Opr::float_type: return T_FLOAT;
504 case LIR_Opr::double_type: return T_DOUBLE;
505 case LIR_Opr::object_type: return T_OBJECT;
506 case LIR_Opr::address_type: return T_ADDRESS;
507 case LIR_Opr::metadata_type:return T_METADATA;
508 case LIR_Opr::unknown_type: // fall through
509 default: ShouldNotReachHere(); return T_ILLEGAL;
510 }
511 }
512
513
514 // LIR_Address
515 class LIR_Address: public LIR_OprPtr {
516 friend class LIR_OpVisitState;
517
518 public:
519 // NOTE: currently these must be the log2 of the scale factor (and
520 // must also be equivalent to the ScaleFactor enum in
521 // assembler_i486.hpp)
522 enum Scale {
523 times_1 = 0,
524 times_2 = 1,
525 times_4 = 2,
526 times_8 = 3
527 };
528
529 private:
530 LIR_Opr _base;
531 LIR_Opr _index;
532 intx _disp;
533 Scale _scale;
534 BasicType _type;
535
536 public:
537 LIR_Address(LIR_Opr base, LIR_Opr index, BasicType type):
538 _base(base)
539 , _index(index)
540 , _disp(0)
541 , _scale(times_1)
542 , _type(type) { verify(); }
543
544 LIR_Address(LIR_Opr base, intx disp, BasicType type):
545 _base(base)
546 , _index(LIR_Opr::illegalOpr())
547 , _disp(disp)
548 , _scale(times_1)
549 , _type(type) { verify(); }
550
551 LIR_Address(LIR_Opr base, BasicType type):
552 _base(base)
553 , _index(LIR_Opr::illegalOpr())
554 , _disp(0)
555 , _scale(times_1)
556 , _type(type) { verify(); }
557
558 LIR_Address(LIR_Opr base, LIR_Opr index, intx disp, BasicType type):
559 _base(base)
560 , _index(index)
561 , _disp(disp)
562 , _scale(times_1)
563 , _type(type) { verify(); }
564
565 LIR_Address(LIR_Opr base, LIR_Opr index, Scale scale, intx disp, BasicType type):
566 _base(base)
567 , _index(index)
568 , _disp(disp)
569 , _scale(scale)
570 , _type(type) { verify(); }
571
572 LIR_Opr base() const { return _base; }
573 LIR_Opr index() const { return _index; }
574 Scale scale() const { return _scale; }
575 intx disp() const { return _disp; }
576
577 bool equals(LIR_Address* other) const { return base() == other->base() && index() == other->index() && disp() == other->disp() && scale() == other->scale(); }
578
579 virtual LIR_Address* as_address() { return this; }
580 virtual BasicType type() const { return _type; }
581 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
582
583 void verify() const PRODUCT_RETURN;
584
585 static Scale scale(BasicType type);
586 };
587
588
589 // operand factory
590 class LIR_OprFact: public AllStatic {
591 public:
592
593 static LIR_Opr illegalOpr;
594 static LIR_Opr nullOpr;
595
596 static LIR_Opr single_cpu(int reg) {
597 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
598 LIR_Opr::int_type |
599 LIR_Opr::cpu_register |
600 LIR_Opr::single_size);
601 }
602 static LIR_Opr single_cpu_oop(int reg) {
603 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
604 LIR_Opr::object_type |
605 LIR_Opr::cpu_register |
606 LIR_Opr::single_size);
607 }
608 static LIR_Opr single_cpu_address(int reg) {
609 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
610 LIR_Opr::address_type |
611 LIR_Opr::cpu_register |
612 LIR_Opr::single_size);
613 }
614 static LIR_Opr single_cpu_metadata(int reg) {
615 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
616 LIR_Opr::metadata_type |
617 LIR_Opr::cpu_register |
618 LIR_Opr::single_size);
619 }
620 static LIR_Opr double_cpu(int reg1, int reg2) {
621 LP64_ONLY(assert(reg1 == reg2, "must be identical"));
622 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) |
623 (reg2 << LIR_Opr::reg2_shift) |
624 LIR_Opr::long_type |
625 LIR_Opr::cpu_register |
626 LIR_Opr::double_size);
627 }
628
629 static LIR_Opr single_fpu(int reg) {
630 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
631 LIR_Opr::float_type |
632 LIR_Opr::fpu_register |
633 LIR_Opr::single_size);
634 }
635
636 // Platform dependent.
637 static LIR_Opr double_fpu(int reg1, int reg2 = -1 /*fnoreg*/);
638
639 #ifdef ARM32
640 static LIR_Opr single_softfp(int reg) {
641 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
642 LIR_Opr::float_type |
643 LIR_Opr::cpu_register |
644 LIR_Opr::single_size);
645 }
646 static LIR_Opr double_softfp(int reg1, int reg2) {
647 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) |
648 (reg2 << LIR_Opr::reg2_shift) |
649 LIR_Opr::double_type |
650 LIR_Opr::cpu_register |
651 LIR_Opr::double_size);
652 }
653 #endif // ARM32
654
655 #if defined(X86)
656 static LIR_Opr single_xmm(int reg) {
657 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
658 LIR_Opr::float_type |
659 LIR_Opr::fpu_register |
660 LIR_Opr::single_size |
661 LIR_Opr::is_xmm_mask);
662 }
663 static LIR_Opr double_xmm(int reg) {
664 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
665 (reg << LIR_Opr::reg2_shift) |
666 LIR_Opr::double_type |
667 LIR_Opr::fpu_register |
668 LIR_Opr::double_size |
669 LIR_Opr::is_xmm_mask);
670 }
671 #endif // X86
672
673 static LIR_Opr virtual_register(int index, BasicType type) {
674 if (index > LIR_Opr::vreg_max) {
675 // Running out of virtual registers. Caller should bailout.
676 return illegalOpr;
677 }
678
679 LIR_Opr res;
680 switch (type) {
681 case T_OBJECT: // fall through
682 case T_ARRAY:
683 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
684 LIR_Opr::object_type |
685 LIR_Opr::cpu_register |
686 LIR_Opr::single_size |
687 LIR_Opr::virtual_mask);
688 break;
689
690 case T_METADATA:
691 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
692 LIR_Opr::metadata_type|
693 LIR_Opr::cpu_register |
694 LIR_Opr::single_size |
695 LIR_Opr::virtual_mask);
696 break;
697
698 case T_INT:
699 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
700 LIR_Opr::int_type |
701 LIR_Opr::cpu_register |
702 LIR_Opr::single_size |
703 LIR_Opr::virtual_mask);
704 break;
705
706 case T_ADDRESS:
707 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
708 LIR_Opr::address_type |
709 LIR_Opr::cpu_register |
710 LIR_Opr::single_size |
711 LIR_Opr::virtual_mask);
712 break;
713
714 case T_LONG:
715 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
716 LIR_Opr::long_type |
717 LIR_Opr::cpu_register |
718 LIR_Opr::double_size |
719 LIR_Opr::virtual_mask);
720 break;
721
722 #ifdef __SOFTFP__
723 case T_FLOAT:
724 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
725 LIR_Opr::float_type |
726 LIR_Opr::cpu_register |
727 LIR_Opr::single_size |
728 LIR_Opr::virtual_mask);
729 break;
730 case T_DOUBLE:
731 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
732 LIR_Opr::double_type |
733 LIR_Opr::cpu_register |
734 LIR_Opr::double_size |
735 LIR_Opr::virtual_mask);
736 break;
737 #else // __SOFTFP__
738 case T_FLOAT:
739 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
740 LIR_Opr::float_type |
741 LIR_Opr::fpu_register |
742 LIR_Opr::single_size |
743 LIR_Opr::virtual_mask);
744 break;
745
746 case
747 T_DOUBLE: res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
748 LIR_Opr::double_type |
749 LIR_Opr::fpu_register |
750 LIR_Opr::double_size |
751 LIR_Opr::virtual_mask);
752 break;
753 #endif // __SOFTFP__
754 default: ShouldNotReachHere(); res = illegalOpr;
755 }
756
757 #ifdef ASSERT
758 res->validate_type();
759 assert(res->vreg_number() == index, "conversion check");
760 assert(index >= LIR_Opr::vreg_base, "must start at vreg_base");
761
762 // old-style calculation; check if old and new method are equal
763 LIR_Opr::OprType t = as_OprType(type);
764 #ifdef __SOFTFP__
765 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
766 t |
767 LIR_Opr::cpu_register |
768 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask);
769 #else // __SOFTFP__
770 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | t |
771 ((type == T_FLOAT || type == T_DOUBLE) ? LIR_Opr::fpu_register : LIR_Opr::cpu_register) |
772 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask);
773 assert(res == old_res, "old and new method not equal");
774 #endif // __SOFTFP__
775 #endif // ASSERT
776
777 return res;
778 }
779
780 // 'index' is computed by FrameMap::local_stack_pos(index); do not use other parameters as
781 // the index is platform independent; a double stack using indices 2 and 3 has always
782 // index 2.
783 static LIR_Opr stack(int index, BasicType type) {
784 LIR_Opr res;
785 switch (type) {
786 case T_OBJECT: // fall through
787 case T_ARRAY:
788 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
789 LIR_Opr::object_type |
790 LIR_Opr::stack_value |
791 LIR_Opr::single_size);
792 break;
793
794 case T_METADATA:
795 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
796 LIR_Opr::metadata_type |
797 LIR_Opr::stack_value |
798 LIR_Opr::single_size);
799 break;
800 case T_INT:
801 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
802 LIR_Opr::int_type |
803 LIR_Opr::stack_value |
804 LIR_Opr::single_size);
805 break;
806
807 case T_ADDRESS:
808 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
809 LIR_Opr::address_type |
810 LIR_Opr::stack_value |
811 LIR_Opr::single_size);
812 break;
813
814 case T_LONG:
815 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
816 LIR_Opr::long_type |
817 LIR_Opr::stack_value |
818 LIR_Opr::double_size);
819 break;
820
821 case T_FLOAT:
822 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
823 LIR_Opr::float_type |
824 LIR_Opr::stack_value |
825 LIR_Opr::single_size);
826 break;
827 case T_DOUBLE:
828 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
829 LIR_Opr::double_type |
830 LIR_Opr::stack_value |
831 LIR_Opr::double_size);
832 break;
833
834 default: ShouldNotReachHere(); res = illegalOpr;
835 }
836
837 #ifdef ASSERT
838 assert(index >= 0, "index must be positive");
839 assert(index == (int)res->data(), "conversion check");
840
841 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
842 LIR_Opr::stack_value |
843 as_OprType(type) |
844 LIR_Opr::size_for(type));
845 assert(res == old_res, "old and new method not equal");
846 #endif
847
848 return res;
849 }
850
851 static LIR_Opr intConst(jint i) { return (LIR_Opr)(new LIR_Const(i)); }
852 static LIR_Opr longConst(jlong l) { return (LIR_Opr)(new LIR_Const(l)); }
853 static LIR_Opr floatConst(jfloat f) { return (LIR_Opr)(new LIR_Const(f)); }
854 static LIR_Opr doubleConst(jdouble d) { return (LIR_Opr)(new LIR_Const(d)); }
855 static LIR_Opr oopConst(jobject o) { return (LIR_Opr)(new LIR_Const(o)); }
856 static LIR_Opr address(LIR_Address* a) { return (LIR_Opr)a; }
857 static LIR_Opr intptrConst(void* p) { return (LIR_Opr)(new LIR_Const(p)); }
858 static LIR_Opr intptrConst(intptr_t v) { return (LIR_Opr)(new LIR_Const((void*)v)); }
859 static LIR_Opr illegal() { return (LIR_Opr)-1; }
860 static LIR_Opr addressConst(jint i) { return (LIR_Opr)(new LIR_Const(i, true)); }
861 static LIR_Opr metadataConst(Metadata* m) { return (LIR_Opr)(new LIR_Const(m)); }
862
863 static LIR_Opr value_type(ValueType* type);
864 };
865
866
867 //-------------------------------------------------------------------------------
868 // LIR Instructions
869 //-------------------------------------------------------------------------------
870 //
871 // Note:
872 // - every instruction has a result operand
873 // - every instruction has an CodeEmitInfo operand (can be revisited later)
874 // - every instruction has a LIR_OpCode operand
875 // - LIR_OpN, means an instruction that has N input operands
876 //
877 // class hierarchy:
878 //
879 class LIR_Op;
880 class LIR_Op0;
881 class LIR_OpLabel;
882 class LIR_Op1;
883 class LIR_OpBranch;
884 class LIR_OpConvert;
885 class LIR_OpAllocObj;
886 class LIR_OpReturn;
887 class LIR_OpRoundFP;
888 class LIR_Op2;
889 class LIR_OpDelay;
890 class LIR_Op3;
891 class LIR_OpAllocArray;
892 class LIR_Op4;
893 class LIR_OpCall;
894 class LIR_OpJavaCall;
895 class LIR_OpRTCall;
896 class LIR_OpArrayCopy;
897 class LIR_OpUpdateCRC32;
898 class LIR_OpLock;
899 class LIR_OpTypeCheck;
900 class LIR_OpFlattenedArrayCheck;
901 class LIR_OpNullFreeArrayCheck;
902 class LIR_OpSubstitutabilityCheck;
903 class LIR_OpCompareAndSwap;
904 class LIR_OpLoadKlass;
905 class LIR_OpProfileCall;
906 class LIR_OpProfileType;
907 class LIR_OpProfileInlineType;
908 #ifdef ASSERT
909 class LIR_OpAssert;
910 #endif
911
912 // LIR operation codes
913 enum LIR_Code {
914 lir_none
915 , begin_op0
916 , lir_label
917 , lir_nop
918 , lir_std_entry
919 , lir_osr_entry
920 , lir_fpop_raw
921 , lir_breakpoint
922 , lir_rtcall
923 , lir_membar
924 , lir_membar_acquire
925 , lir_membar_release
926 , lir_membar_loadload
927 , lir_membar_storestore
928 , lir_membar_loadstore
929 , lir_membar_storeload
930 , lir_get_thread
931 , lir_on_spin_wait
932 , lir_check_orig_pc
933 , end_op0
934 , begin_op1
935 , lir_fxch
936 , lir_fld
937 , lir_push
938 , lir_pop
939 , lir_null_check
940 , lir_return
941 , lir_leal
942 , lir_move
943 , lir_convert
944 , lir_alloc_object
945 , lir_monaddr
946 , lir_roundfp
947 , lir_sqrt
948 , lir_abs
949 , lir_neg
950 , lir_f2hf
951 , lir_hf2f
952 , lir_safepoint
953 , lir_unwind
954 , lir_load_klass
955 , end_op1
956 , begin_op2
957 , lir_branch
958 , lir_cond_float_branch
959 , lir_cmp
960 , lir_cmp_l2i
961 , lir_ucmp_fd2i
962 , lir_cmp_fd2i
963 , lir_add
964 , lir_sub
965 , lir_mul
966 , lir_div
967 , lir_rem
968 , lir_logic_and
969 , lir_logic_or
970 , lir_logic_xor
971 , lir_shl
972 , lir_shr
973 , lir_ushr
974 , lir_alloc_array
975 , lir_throw
976 , lir_xadd
977 , lir_xchg
978 , end_op2
979 , begin_op3
980 , lir_idiv
981 , lir_irem
982 , lir_fmad
983 , lir_fmaf
984 , end_op3
985 , begin_op4
986 , lir_cmove
987 , end_op4
988 , begin_opJavaCall
989 , lir_static_call
990 , lir_optvirtual_call
991 , lir_icvirtual_call
992 , lir_dynamic_call
993 , end_opJavaCall
994 , begin_opArrayCopy
995 , lir_arraycopy
996 , end_opArrayCopy
997 , begin_opUpdateCRC32
998 , lir_updatecrc32
999 , end_opUpdateCRC32
1000 , begin_opLock
1001 , lir_lock
1002 , lir_unlock
1003 , end_opLock
1004 , begin_delay_slot
1005 , lir_delay_slot
1006 , end_delay_slot
1007 , begin_opTypeCheck
1008 , lir_instanceof
1009 , lir_checkcast
1010 , lir_store_check
1011 , end_opTypeCheck
1012 , begin_opFlattenedArrayCheck
1013 , lir_flat_array_check
1014 , end_opFlattenedArrayCheck
1015 , begin_opNullFreeArrayCheck
1016 , lir_null_free_array_check
1017 , end_opNullFreeArrayCheck
1018 , begin_opSubstitutabilityCheck
1019 , lir_substitutability_check
1020 , end_opSubstitutabilityCheck
1021 , begin_opCompareAndSwap
1022 , lir_cas_long
1023 , lir_cas_obj
1024 , lir_cas_int
1025 , end_opCompareAndSwap
1026 , begin_opMDOProfile
1027 , lir_profile_call
1028 , lir_profile_type
1029 , lir_profile_inline_type
1030 , end_opMDOProfile
1031 , begin_opAssert
1032 , lir_assert
1033 , end_opAssert
1034 #if INCLUDE_ZGC
1035 , begin_opXLoadBarrierTest
1036 , lir_xloadbarrier_test
1037 , end_opXLoadBarrierTest
1038 #endif
1039 };
1040
1041
1042 enum LIR_Condition {
1043 lir_cond_equal
1044 , lir_cond_notEqual
1045 , lir_cond_less
1046 , lir_cond_lessEqual
1047 , lir_cond_greaterEqual
1048 , lir_cond_greater
1049 , lir_cond_belowEqual
1050 , lir_cond_aboveEqual
1051 , lir_cond_always
1052 , lir_cond_unknown = -1
1053 };
1054
1055
1056 enum LIR_PatchCode {
1057 lir_patch_none,
1058 lir_patch_low,
1059 lir_patch_high,
1060 lir_patch_normal
1061 };
1062
1063
1064 enum LIR_MoveKind {
1065 lir_move_normal,
1066 lir_move_volatile,
1067 lir_move_wide,
1068 lir_move_max_flag
1069 };
1070
1071
1072 // --------------------------------------------------
1073 // LIR_Op
1074 // --------------------------------------------------
1075 class LIR_Op: public CompilationResourceObj {
1076 friend class LIR_OpVisitState;
1077
1078 #ifdef ASSERT
1079 private:
1080 const char * _file;
1081 int _line;
1082 #endif
1083
1084 protected:
1085 LIR_Opr _result;
1086 unsigned short _code;
1087 unsigned short _flags;
1088 CodeEmitInfo* _info;
1089 int _id; // value id for register allocation
1090 int _fpu_pop_count;
1091 Instruction* _source; // for debugging
1092
1093 static void print_condition(outputStream* out, LIR_Condition cond) PRODUCT_RETURN;
1094
1095 protected:
1096 static bool is_in_range(LIR_Code test, LIR_Code start, LIR_Code end) { return start < test && test < end; }
1097
1098 public:
1099 LIR_Op()
1100 :
1101 #ifdef ASSERT
1102 _file(nullptr)
1103 , _line(0),
1104 #endif
1105 _result(LIR_OprFact::illegalOpr)
1106 , _code(lir_none)
1107 , _flags(0)
1108 , _info(nullptr)
1109 , _id(-1)
1110 , _fpu_pop_count(0)
1111 , _source(nullptr) {}
1112
1113 LIR_Op(LIR_Code code, LIR_Opr result, CodeEmitInfo* info)
1114 :
1115 #ifdef ASSERT
1116 _file(nullptr)
1117 , _line(0),
1118 #endif
1119 _result(result)
1120 , _code(code)
1121 , _flags(0)
1122 , _info(info)
1123 , _id(-1)
1124 , _fpu_pop_count(0)
1125 , _source(nullptr) {}
1126
1127 CodeEmitInfo* info() const { return _info; }
1128 LIR_Code code() const { return (LIR_Code)_code; }
1129 LIR_Opr result_opr() const { return _result; }
1130 void set_result_opr(LIR_Opr opr) { _result = opr; }
1131
1132 #ifdef ASSERT
1133 void set_file_and_line(const char * file, int line) {
1134 _file = file;
1135 _line = line;
1136 }
1137 #endif
1138
1139 virtual const char * name() const PRODUCT_RETURN_NULL;
1140 virtual void visit(LIR_OpVisitState* state);
1141
1142 int id() const { return _id; }
1143 void set_id(int id) { _id = id; }
1144
1145 // FPU stack simulation helpers -- only used on Intel
1146 void set_fpu_pop_count(int count) { assert(count >= 0 && count <= 1, "currently only 0 and 1 are valid"); _fpu_pop_count = count; }
1147 int fpu_pop_count() const { return _fpu_pop_count; }
1148 bool pop_fpu_stack() { return _fpu_pop_count > 0; }
1149
1150 Instruction* source() const { return _source; }
1151 void set_source(Instruction* ins) { _source = ins; }
1152
1153 virtual void emit_code(LIR_Assembler* masm) = 0;
1154 virtual void print_instr(outputStream* out) const = 0;
1155 virtual void print_on(outputStream* st) const PRODUCT_RETURN;
1156
1157 virtual bool is_patching() { return false; }
1158 virtual LIR_OpCall* as_OpCall() { return nullptr; }
1159 virtual LIR_OpJavaCall* as_OpJavaCall() { return nullptr; }
1160 virtual LIR_OpLabel* as_OpLabel() { return nullptr; }
1161 virtual LIR_OpDelay* as_OpDelay() { return nullptr; }
1162 virtual LIR_OpLock* as_OpLock() { return nullptr; }
1163 virtual LIR_OpAllocArray* as_OpAllocArray() { return nullptr; }
1164 virtual LIR_OpAllocObj* as_OpAllocObj() { return nullptr; }
1165 virtual LIR_OpRoundFP* as_OpRoundFP() { return nullptr; }
1166 virtual LIR_OpBranch* as_OpBranch() { return nullptr; }
1167 virtual LIR_OpReturn* as_OpReturn() { return nullptr; }
1168 virtual LIR_OpRTCall* as_OpRTCall() { return nullptr; }
1169 virtual LIR_OpConvert* as_OpConvert() { return nullptr; }
1170 virtual LIR_Op0* as_Op0() { return nullptr; }
1171 virtual LIR_Op1* as_Op1() { return nullptr; }
1172 virtual LIR_Op2* as_Op2() { return nullptr; }
1173 virtual LIR_Op3* as_Op3() { return nullptr; }
1174 virtual LIR_Op4* as_Op4() { return nullptr; }
1175 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return nullptr; }
1176 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return nullptr; }
1177 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return nullptr; }
1178 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return nullptr; }
1179 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return nullptr; }
1180 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return nullptr; }
1181 virtual LIR_OpCompareAndSwap* as_OpCompareAndSwap() { return nullptr; }
1182 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return nullptr; }
1183 virtual LIR_OpProfileCall* as_OpProfileCall() { return nullptr; }
1184 virtual LIR_OpProfileType* as_OpProfileType() { return nullptr; }
1185 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return nullptr; }
1186 #ifdef ASSERT
1187 virtual LIR_OpAssert* as_OpAssert() { return nullptr; }
1188 #endif
1189
1190 virtual void verify() const {}
1191 };
1192
1193 // for calls
1194 class LIR_OpCall: public LIR_Op {
1195 friend class LIR_OpVisitState;
1196
1197 protected:
1198 address _addr;
1199 LIR_OprList* _arguments;
1200 protected:
1201 LIR_OpCall(LIR_Code code, address addr, LIR_Opr result,
1202 LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1203 : LIR_Op(code, result, info)
1204 , _addr(addr)
1205 , _arguments(arguments) {}
1206
1207 public:
1208 address addr() const { return _addr; }
1209 const LIR_OprList* arguments() const { return _arguments; }
1210 virtual LIR_OpCall* as_OpCall() { return this; }
1211 };
1212
1213
1214 // --------------------------------------------------
1215 // LIR_OpJavaCall
1216 // --------------------------------------------------
1217 class LIR_OpJavaCall: public LIR_OpCall {
1218 friend class LIR_OpVisitState;
1219
1220 private:
1221 ciMethod* _method;
1222 LIR_Opr _receiver;
1223 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.
1224
1225 public:
1226 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1227 LIR_Opr receiver, LIR_Opr result,
1228 address addr, LIR_OprList* arguments,
1229 CodeEmitInfo* info)
1230 : LIR_OpCall(code, addr, result, arguments, info)
1231 , _method(method)
1232 , _receiver(receiver)
1233 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1234 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1235
1236 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1237 LIR_Opr receiver, LIR_Opr result, intptr_t vtable_offset,
1238 LIR_OprList* arguments, CodeEmitInfo* info)
1239 : LIR_OpCall(code, (address)vtable_offset, result, arguments, info)
1240 , _method(method)
1241 , _receiver(receiver)
1242 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1243 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1244
1245 LIR_Opr receiver() const { return _receiver; }
1246 ciMethod* method() const { return _method; }
1247
1248 // JSR 292 support.
1249 bool is_invokedynamic() const { return code() == lir_dynamic_call; }
1250 bool is_method_handle_invoke() const {
1251 return method()->is_compiled_lambda_form() || // Java-generated lambda form
1252 method()->is_method_handle_intrinsic(); // JVM-generated MH intrinsic
1253 }
1254
1255 virtual void emit_code(LIR_Assembler* masm);
1256 virtual LIR_OpJavaCall* as_OpJavaCall() { return this; }
1257 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1258
1259 bool maybe_return_as_fields(ciInlineKlass** vk = nullptr) const;
1260 };
1261
1262 // --------------------------------------------------
1263 // LIR_OpLabel
1264 // --------------------------------------------------
1265 // Location where a branch can continue
1266 class LIR_OpLabel: public LIR_Op {
1267 friend class LIR_OpVisitState;
1268
1269 private:
1270 Label* _label;
1271 public:
1272 LIR_OpLabel(Label* lbl)
1273 : LIR_Op(lir_label, LIR_OprFact::illegalOpr, nullptr)
1274 , _label(lbl) {}
1275 Label* label() const { return _label; }
1276
1277 virtual void emit_code(LIR_Assembler* masm);
1278 virtual LIR_OpLabel* as_OpLabel() { return this; }
1279 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1280 };
1281
1282 // LIR_OpArrayCopy
1283 class LIR_OpArrayCopy: public LIR_Op {
1284 friend class LIR_OpVisitState;
1285
1286 private:
1287 ArrayCopyStub* _stub;
1288 LIR_Opr _src;
1289 LIR_Opr _src_pos;
1290 LIR_Opr _dst;
1291 LIR_Opr _dst_pos;
1292 LIR_Opr _length;
1293 LIR_Opr _tmp;
1294 ciArrayKlass* _expected_type;
1295 int _flags;
1296
1297 public:
1298 enum Flags {
1299 src_null_check = 1 << 0,
1300 dst_null_check = 1 << 1,
1301 src_pos_positive_check = 1 << 2,
1302 dst_pos_positive_check = 1 << 3,
1303 length_positive_check = 1 << 4,
1304 src_range_check = 1 << 5,
1305 dst_range_check = 1 << 6,
1306 type_check = 1 << 7,
1307 overlapping = 1 << 8,
1308 unaligned = 1 << 9,
1309 src_objarray = 1 << 10,
1310 dst_objarray = 1 << 11,
1311 always_slow_path = 1 << 12,
1312 src_inlinetype_check = 1 << 13,
1313 dst_inlinetype_check = 1 << 14,
1314 all_flags = (1 << 15) - 1
1315 };
1316
1317 LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp,
1318 ciArrayKlass* expected_type, int flags, CodeEmitInfo* info);
1319
1320 LIR_Opr src() const { return _src; }
1321 LIR_Opr src_pos() const { return _src_pos; }
1322 LIR_Opr dst() const { return _dst; }
1323 LIR_Opr dst_pos() const { return _dst_pos; }
1324 LIR_Opr length() const { return _length; }
1325 LIR_Opr tmp() const { return _tmp; }
1326 int flags() const { return _flags; }
1327 ciArrayKlass* expected_type() const { return _expected_type; }
1328 ArrayCopyStub* stub() const { return _stub; }
1329
1330 virtual void emit_code(LIR_Assembler* masm);
1331 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return this; }
1332 void print_instr(outputStream* out) const PRODUCT_RETURN;
1333 };
1334
1335 // LIR_OpUpdateCRC32
1336 class LIR_OpUpdateCRC32: public LIR_Op {
1337 friend class LIR_OpVisitState;
1338
1339 private:
1340 LIR_Opr _crc;
1341 LIR_Opr _val;
1342
1343 public:
1344
1345 LIR_OpUpdateCRC32(LIR_Opr crc, LIR_Opr val, LIR_Opr res);
1346
1347 LIR_Opr crc() const { return _crc; }
1348 LIR_Opr val() const { return _val; }
1349
1350 virtual void emit_code(LIR_Assembler* masm);
1351 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return this; }
1352 void print_instr(outputStream* out) const PRODUCT_RETURN;
1353 };
1354
1355 // --------------------------------------------------
1356 // LIR_Op0
1357 // --------------------------------------------------
1358 class LIR_Op0: public LIR_Op {
1359 friend class LIR_OpVisitState;
1360
1361 public:
1362 LIR_Op0(LIR_Code code)
1363 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1364 LIR_Op0(LIR_Code code, LIR_Opr result, CodeEmitInfo* info = nullptr)
1365 : LIR_Op(code, result, info) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1366
1367 virtual void emit_code(LIR_Assembler* masm);
1368 virtual LIR_Op0* as_Op0() { return this; }
1369 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1370 };
1371
1372
1373 // --------------------------------------------------
1374 // LIR_Op1
1375 // --------------------------------------------------
1376
1377 class LIR_Op1: public LIR_Op {
1378 friend class LIR_OpVisitState;
1379
1380 protected:
1381 LIR_Opr _opr; // input operand
1382 LIR_Opr _tmp;
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 , _tmp(LIR_OprFact::illegalOpr)
1398 , _type(type)
1399 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1400
1401 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, LIR_Opr tmp, BasicType type = T_ILLEGAL, LIR_PatchCode patch = lir_patch_none, CodeEmitInfo* info = nullptr)
1402 : LIR_Op(code, result, info)
1403 , _opr(opr)
1404 , _tmp(tmp)
1405 , _type(type)
1406 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1407
1408 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, BasicType type, LIR_PatchCode patch, CodeEmitInfo* info, LIR_MoveKind kind)
1409 : LIR_Op(code, result, info)
1410 , _opr(opr)
1411 , _tmp(LIR_OprFact::illegalOpr)
1412 , _type(type)
1413 , _patch(patch) {
1414 assert(code == lir_move, "must be");
1415 set_kind(kind);
1416 }
1417
1418 LIR_Op1(LIR_Code code, LIR_Opr opr, CodeEmitInfo* info)
1419 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1420 , _opr(opr)
1421 , _tmp(LIR_OprFact::illegalOpr)
1422 , _type(T_ILLEGAL)
1423 , _patch(lir_patch_none) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1424
1425 LIR_Opr in_opr() const { return _opr; }
1426 LIR_Opr tmp_opr() const { return _tmp; }
1427 LIR_PatchCode patch_code() const { return _patch; }
1428 BasicType type() const { return _type; }
1429
1430 LIR_MoveKind move_kind() const {
1431 assert(code() == lir_move, "must be");
1432 return (LIR_MoveKind)_flags;
1433 }
1434
1435 virtual bool is_patching() { return _patch != lir_patch_none; }
1436 virtual void emit_code(LIR_Assembler* masm);
1437 virtual LIR_Op1* as_Op1() { return this; }
1438 virtual const char * name() const PRODUCT_RETURN_NULL;
1439
1440 void set_in_opr(LIR_Opr opr) { _opr = opr; }
1441
1442 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1443 virtual void verify() const;
1444 };
1445
1446
1447 // for runtime calls
1448 class LIR_OpRTCall: public LIR_OpCall {
1449 friend class LIR_OpVisitState;
1450
1451 private:
1452 LIR_Opr _tmp;
1453 public:
1454 LIR_OpRTCall(address addr, LIR_Opr tmp,
1455 LIR_Opr result, LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1456 : LIR_OpCall(lir_rtcall, addr, result, arguments, info)
1457 , _tmp(tmp) {}
1458
1459 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1460 virtual void emit_code(LIR_Assembler* masm);
1461 virtual LIR_OpRTCall* as_OpRTCall() { return this; }
1462
1463 LIR_Opr tmp() const { return _tmp; }
1464
1465 virtual void verify() const;
1466 };
1467
1468
1469
1470 class LIR_OpReturn: public LIR_Op1 {
1471 friend class LIR_OpVisitState;
1472
1473 private:
1474 C1SafepointPollStub* _stub;
1475
1476 public:
1477 LIR_OpReturn(LIR_Opr opr);
1478
1479 C1SafepointPollStub* stub() const { return _stub; }
1480 virtual LIR_OpReturn* as_OpReturn() { return this; }
1481 };
1482
1483 class ConversionStub;
1484
1485 class LIR_OpConvert: public LIR_Op1 {
1486 friend class LIR_OpVisitState;
1487
1488 private:
1489 Bytecodes::Code _bytecode;
1490 ConversionStub* _stub;
1491
1492 public:
1493 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub)
1494 : LIR_Op1(lir_convert, opr, result)
1495 , _bytecode(code)
1496 , _stub(stub) {}
1497
1498 Bytecodes::Code bytecode() const { return _bytecode; }
1499 ConversionStub* stub() const { return _stub; }
1500
1501 virtual void emit_code(LIR_Assembler* masm);
1502 virtual LIR_OpConvert* as_OpConvert() { return this; }
1503 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1504
1505 static void print_bytecode(outputStream* out, Bytecodes::Code code) PRODUCT_RETURN;
1506 };
1507
1508
1509 // LIR_OpAllocObj
1510 class LIR_OpAllocObj : public LIR_Op1 {
1511 friend class LIR_OpVisitState;
1512
1513 private:
1514 LIR_Opr _tmp1;
1515 LIR_Opr _tmp2;
1516 LIR_Opr _tmp3;
1517 LIR_Opr _tmp4;
1518 int _hdr_size;
1519 int _obj_size;
1520 CodeStub* _stub;
1521 bool _init_check;
1522
1523 public:
1524 LIR_OpAllocObj(LIR_Opr klass, LIR_Opr result,
1525 LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1526 int hdr_size, int obj_size, bool init_check, CodeStub* stub)
1527 : LIR_Op1(lir_alloc_object, klass, result)
1528 , _tmp1(t1)
1529 , _tmp2(t2)
1530 , _tmp3(t3)
1531 , _tmp4(t4)
1532 , _hdr_size(hdr_size)
1533 , _obj_size(obj_size)
1534 , _stub(stub)
1535 , _init_check(init_check) { }
1536
1537 LIR_Opr klass() const { return in_opr(); }
1538 LIR_Opr obj() const { return result_opr(); }
1539 LIR_Opr tmp1() const { return _tmp1; }
1540 LIR_Opr tmp2() const { return _tmp2; }
1541 LIR_Opr tmp3() const { return _tmp3; }
1542 LIR_Opr tmp4() const { return _tmp4; }
1543 int header_size() const { return _hdr_size; }
1544 int object_size() const { return _obj_size; }
1545 bool init_check() const { return _init_check; }
1546 CodeStub* stub() const { return _stub; }
1547
1548 virtual void emit_code(LIR_Assembler* masm);
1549 virtual LIR_OpAllocObj * as_OpAllocObj () { return this; }
1550 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1551 };
1552
1553
1554 // LIR_OpRoundFP
1555 class LIR_OpRoundFP : public LIR_Op1 {
1556 friend class LIR_OpVisitState;
1557
1558 private:
1559 LIR_Opr _tmp;
1560
1561 public:
1562 LIR_OpRoundFP(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result)
1563 : LIR_Op1(lir_roundfp, reg, result)
1564 , _tmp(stack_loc_temp) {}
1565
1566 LIR_Opr tmp() const { return _tmp; }
1567 virtual LIR_OpRoundFP* as_OpRoundFP() { return this; }
1568 void print_instr(outputStream* out) const PRODUCT_RETURN;
1569 };
1570
1571 // LIR_OpTypeCheck
1572 class LIR_OpTypeCheck: public LIR_Op {
1573 friend class LIR_OpVisitState;
1574
1575 private:
1576 LIR_Opr _object;
1577 LIR_Opr _array;
1578 ciKlass* _klass;
1579 LIR_Opr _tmp1;
1580 LIR_Opr _tmp2;
1581 LIR_Opr _tmp3;
1582 CodeEmitInfo* _info_for_patch;
1583 CodeEmitInfo* _info_for_exception;
1584 CodeStub* _stub;
1585 ciMethod* _profiled_method;
1586 int _profiled_bci;
1587 bool _should_profile;
1588 bool _fast_check;
1589 bool _need_null_check;
1590
1591 public:
1592 LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
1593 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1594 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub, bool need_null_check = true);
1595 LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array,
1596 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception);
1597
1598 LIR_Opr object() const { return _object; }
1599 LIR_Opr array() const { assert(code() == lir_store_check, "not valid"); return _array; }
1600 LIR_Opr tmp1() const { return _tmp1; }
1601 LIR_Opr tmp2() const { return _tmp2; }
1602 LIR_Opr tmp3() const { return _tmp3; }
1603 ciKlass* klass() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _klass; }
1604 bool fast_check() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _fast_check; }
1605 CodeEmitInfo* info_for_patch() const { return _info_for_patch; }
1606 CodeEmitInfo* info_for_exception() const { return _info_for_exception; }
1607 CodeStub* stub() const { return _stub; }
1608
1609 // MethodData* profiling
1610 void set_profiled_method(ciMethod *method) { _profiled_method = method; }
1611 void set_profiled_bci(int bci) { _profiled_bci = bci; }
1612 void set_should_profile(bool b) { _should_profile = b; }
1613 ciMethod* profiled_method() const { return _profiled_method; }
1614 int profiled_bci() const { return _profiled_bci; }
1615 bool should_profile() const { return _should_profile; }
1616 bool need_null_check() const { return _need_null_check; }
1617 virtual bool is_patching() { return _info_for_patch != nullptr; }
1618 virtual void emit_code(LIR_Assembler* masm);
1619 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return this; }
1620 void print_instr(outputStream* out) const PRODUCT_RETURN;
1621 };
1622
1623 // LIR_OpFlattenedArrayCheck
1624 class LIR_OpFlattenedArrayCheck: public LIR_Op {
1625 friend class LIR_OpVisitState;
1626
1627 private:
1628 LIR_Opr _array;
1629 LIR_Opr _value;
1630 LIR_Opr _tmp;
1631 CodeStub* _stub;
1632 public:
1633 LIR_OpFlattenedArrayCheck(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
1634 LIR_Opr array() const { return _array; }
1635 LIR_Opr value() const { return _value; }
1636 LIR_Opr tmp() const { return _tmp; }
1637 CodeStub* stub() const { return _stub; }
1638
1639 virtual void emit_code(LIR_Assembler* masm);
1640 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return this; }
1641 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1642 };
1643
1644 // LIR_OpNullFreeArrayCheck
1645 class LIR_OpNullFreeArrayCheck: public LIR_Op {
1646 friend class LIR_OpVisitState;
1647
1648 private:
1649 LIR_Opr _array;
1650 LIR_Opr _tmp;
1651 public:
1652 LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp);
1653 LIR_Opr array() const { return _array; }
1654 LIR_Opr tmp() const { return _tmp; }
1655
1656 virtual void emit_code(LIR_Assembler* masm);
1657 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return this; }
1658 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1659 };
1660
1661 class LIR_OpSubstitutabilityCheck: public LIR_Op {
1662 friend class LIR_OpVisitState;
1663
1664 private:
1665 LIR_Opr _left;
1666 LIR_Opr _right;
1667 LIR_Opr _equal_result;
1668 LIR_Opr _not_equal_result;
1669 LIR_Opr _tmp1;
1670 LIR_Opr _tmp2;
1671 ciKlass* _left_klass;
1672 ciKlass* _right_klass;
1673 LIR_Opr _left_klass_op;
1674 LIR_Opr _right_klass_op;
1675 CodeStub* _stub;
1676 public:
1677 LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
1678 LIR_Opr tmp1, LIR_Opr tmp2,
1679 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
1680 CodeEmitInfo* info, CodeStub* stub);
1681
1682 LIR_Opr left() const { return _left; }
1683 LIR_Opr right() const { return _right; }
1684 LIR_Opr equal_result() const { return _equal_result; }
1685 LIR_Opr not_equal_result() const { return _not_equal_result; }
1686 LIR_Opr tmp1() const { return _tmp1; }
1687 LIR_Opr tmp2() const { return _tmp2; }
1688 ciKlass* left_klass() const { return _left_klass; }
1689 ciKlass* right_klass() const { return _right_klass; }
1690 LIR_Opr left_klass_op() const { return _left_klass_op; }
1691 LIR_Opr right_klass_op() const { return _right_klass_op; }
1692 CodeStub* stub() const { return _stub; }
1693
1694 virtual void emit_code(LIR_Assembler* masm);
1695 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return this; }
1696 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1697 };
1698
1699 // LIR_Op2
1700 class LIR_Op2: public LIR_Op {
1701 friend class LIR_OpVisitState;
1702
1703 protected:
1704 LIR_Opr _opr1;
1705 LIR_Opr _opr2;
1706 LIR_Opr _tmp1;
1707 LIR_Opr _tmp2;
1708 LIR_Opr _tmp3;
1709 LIR_Opr _tmp4;
1710 LIR_Opr _tmp5;
1711 LIR_Condition _condition;
1712 BasicType _type;
1713
1714 void verify() const;
1715
1716 public:
1717 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1718 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1719 , _opr1(opr1)
1720 , _opr2(opr2)
1721 , _tmp1(LIR_OprFact::illegalOpr)
1722 , _tmp2(LIR_OprFact::illegalOpr)
1723 , _tmp3(LIR_OprFact::illegalOpr)
1724 , _tmp4(LIR_OprFact::illegalOpr)
1725 , _tmp5(LIR_OprFact::illegalOpr)
1726 , _condition(condition)
1727 , _type(type) {
1728 assert(code == lir_cmp || code == lir_branch || code == lir_cond_float_branch || code == lir_assert, "code check");
1729 }
1730
1731 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type)
1732 : LIR_Op(code, result, nullptr)
1733 , _opr1(opr1)
1734 , _opr2(opr2)
1735 , _tmp1(LIR_OprFact::illegalOpr)
1736 , _tmp2(LIR_OprFact::illegalOpr)
1737 , _tmp3(LIR_OprFact::illegalOpr)
1738 , _tmp4(LIR_OprFact::illegalOpr)
1739 , _tmp5(LIR_OprFact::illegalOpr)
1740 , _condition(condition)
1741 , _type(type) {
1742 assert(code == lir_cmove, "code check");
1743 assert(type != T_ILLEGAL, "cmove should have type");
1744 }
1745
1746 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result = LIR_OprFact::illegalOpr,
1747 CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1748 : LIR_Op(code, result, info)
1749 , _opr1(opr1)
1750 , _opr2(opr2)
1751 , _tmp1(LIR_OprFact::illegalOpr)
1752 , _tmp2(LIR_OprFact::illegalOpr)
1753 , _tmp3(LIR_OprFact::illegalOpr)
1754 , _tmp4(LIR_OprFact::illegalOpr)
1755 , _tmp5(LIR_OprFact::illegalOpr)
1756 , _condition(lir_cond_unknown)
1757 , _type(type) {
1758 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1759 }
1760
1761 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, LIR_Opr tmp1, LIR_Opr tmp2 = LIR_OprFact::illegalOpr,
1762 LIR_Opr tmp3 = LIR_OprFact::illegalOpr, LIR_Opr tmp4 = LIR_OprFact::illegalOpr, LIR_Opr tmp5 = LIR_OprFact::illegalOpr)
1763 : LIR_Op(code, result, nullptr)
1764 , _opr1(opr1)
1765 , _opr2(opr2)
1766 , _tmp1(tmp1)
1767 , _tmp2(tmp2)
1768 , _tmp3(tmp3)
1769 , _tmp4(tmp4)
1770 , _tmp5(tmp5)
1771 , _condition(lir_cond_unknown)
1772 , _type(T_ILLEGAL) {
1773 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1774 }
1775
1776 LIR_Opr in_opr1() const { return _opr1; }
1777 LIR_Opr in_opr2() const { return _opr2; }
1778 BasicType type() const { return _type; }
1779 LIR_Opr tmp1_opr() const { return _tmp1; }
1780 LIR_Opr tmp2_opr() const { return _tmp2; }
1781 LIR_Opr tmp3_opr() const { return _tmp3; }
1782 LIR_Opr tmp4_opr() const { return _tmp4; }
1783 LIR_Opr tmp5_opr() const { return _tmp5; }
1784 LIR_Condition condition() const {
1785 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch || code() == lir_assert, "only valid for branch and assert"); return _condition;
1786 }
1787 void set_condition(LIR_Condition condition) {
1788 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch, "only valid for branch"); _condition = condition;
1789 }
1790
1791 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1792 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1793
1794 virtual void emit_code(LIR_Assembler* masm);
1795 virtual LIR_Op2* as_Op2() { return this; }
1796 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1797 };
1798
1799 class LIR_OpBranch: public LIR_Op2 {
1800 friend class LIR_OpVisitState;
1801
1802 private:
1803 Label* _label;
1804 BlockBegin* _block; // if this is a branch to a block, this is the block
1805 BlockBegin* _ublock; // if this is a float-branch, this is the unordered block
1806 CodeStub* _stub; // if this is a branch to a stub, this is the stub
1807
1808 public:
1809 LIR_OpBranch(LIR_Condition cond, Label* lbl)
1810 : LIR_Op2(lir_branch, cond, LIR_OprFact::illegalOpr, LIR_OprFact::illegalOpr, (CodeEmitInfo*) nullptr)
1811 , _label(lbl)
1812 , _block(nullptr)
1813 , _ublock(nullptr)
1814 , _stub(nullptr) { }
1815
1816 LIR_OpBranch(LIR_Condition cond, BlockBegin* block);
1817 LIR_OpBranch(LIR_Condition cond, CodeStub* stub);
1818
1819 // for unordered comparisons
1820 LIR_OpBranch(LIR_Condition cond, BlockBegin* block, BlockBegin* ublock);
1821
1822 LIR_Condition cond() const {
1823 return condition();
1824 }
1825
1826 void set_cond(LIR_Condition cond) {
1827 set_condition(cond);
1828 }
1829
1830 Label* label() const { return _label; }
1831 BlockBegin* block() const { return _block; }
1832 BlockBegin* ublock() const { return _ublock; }
1833 CodeStub* stub() const { return _stub; }
1834
1835 void change_block(BlockBegin* b);
1836 void change_ublock(BlockBegin* b);
1837 void negate_cond();
1838
1839 virtual void emit_code(LIR_Assembler* masm);
1840 virtual LIR_OpBranch* as_OpBranch() { return this; }
1841 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1842 };
1843
1844 class LIR_OpAllocArray : public LIR_Op {
1845 friend class LIR_OpVisitState;
1846
1847 private:
1848 LIR_Opr _klass;
1849 LIR_Opr _len;
1850 LIR_Opr _tmp1;
1851 LIR_Opr _tmp2;
1852 LIR_Opr _tmp3;
1853 LIR_Opr _tmp4;
1854 CodeStub* _stub;
1855 BasicType _type;
1856 bool _zero_array;
1857 bool _is_null_free;
1858
1859 public:
1860 LIR_OpAllocArray(LIR_Opr klass, LIR_Opr len, LIR_Opr result, LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4, BasicType type, CodeStub* stub, bool zero_array, bool is_null_free)
1861 : LIR_Op(lir_alloc_array, result, nullptr)
1862 , _klass(klass)
1863 , _len(len)
1864 , _tmp1(t1)
1865 , _tmp2(t2)
1866 , _tmp3(t3)
1867 , _tmp4(t4)
1868 , _stub(stub)
1869 , _type(type)
1870 , _zero_array(zero_array)
1871 , _is_null_free(is_null_free) {}
1872
1873 LIR_Opr klass() const { return _klass; }
1874 LIR_Opr len() const { return _len; }
1875 LIR_Opr obj() const { return result_opr(); }
1876 LIR_Opr tmp1() const { return _tmp1; }
1877 LIR_Opr tmp2() const { return _tmp2; }
1878 LIR_Opr tmp3() const { return _tmp3; }
1879 LIR_Opr tmp4() const { return _tmp4; }
1880 BasicType type() const { return _type; }
1881 CodeStub* stub() const { return _stub; }
1882 bool zero_array() const { return _zero_array; }
1883 bool is_null_free() const { return _is_null_free;}
1884
1885 virtual void emit_code(LIR_Assembler* masm);
1886 virtual LIR_OpAllocArray * as_OpAllocArray () { return this; }
1887 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1888 };
1889
1890
1891 class LIR_Op3: public LIR_Op {
1892 friend class LIR_OpVisitState;
1893
1894 private:
1895 LIR_Opr _opr1;
1896 LIR_Opr _opr2;
1897 LIR_Opr _opr3;
1898 public:
1899 LIR_Op3(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr result, CodeEmitInfo* info = nullptr)
1900 : LIR_Op(code, result, info)
1901 , _opr1(opr1)
1902 , _opr2(opr2)
1903 , _opr3(opr3) { assert(is_in_range(code, begin_op3, end_op3), "code check"); }
1904 LIR_Opr in_opr1() const { return _opr1; }
1905 LIR_Opr in_opr2() const { return _opr2; }
1906 LIR_Opr in_opr3() const { return _opr3; }
1907
1908 virtual void emit_code(LIR_Assembler* masm);
1909 virtual LIR_Op3* as_Op3() { return this; }
1910 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1911 };
1912
1913 class LIR_Op4: public LIR_Op {
1914 friend class LIR_OpVisitState;
1915 protected:
1916 LIR_Opr _opr1;
1917 LIR_Opr _opr2;
1918 LIR_Opr _opr3;
1919 LIR_Opr _opr4;
1920 LIR_Opr _tmp1;
1921 LIR_Opr _tmp2;
1922 LIR_Opr _tmp3;
1923 LIR_Opr _tmp4;
1924 LIR_Opr _tmp5;
1925 LIR_Condition _condition;
1926 BasicType _type;
1927
1928 public:
1929 LIR_Op4(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr opr4,
1930 LIR_Opr result, BasicType type)
1931 : LIR_Op(code, result, nullptr)
1932 , _opr1(opr1)
1933 , _opr2(opr2)
1934 , _opr3(opr3)
1935 , _opr4(opr4)
1936 , _tmp1(LIR_OprFact::illegalOpr)
1937 , _tmp2(LIR_OprFact::illegalOpr)
1938 , _tmp3(LIR_OprFact::illegalOpr)
1939 , _tmp4(LIR_OprFact::illegalOpr)
1940 , _tmp5(LIR_OprFact::illegalOpr)
1941 , _condition(condition)
1942 , _type(type) {
1943 assert(code == lir_cmove, "code check");
1944 assert(type != T_ILLEGAL, "cmove should have type");
1945 }
1946
1947 LIR_Opr in_opr1() const { return _opr1; }
1948 LIR_Opr in_opr2() const { return _opr2; }
1949 LIR_Opr in_opr3() const { return _opr3; }
1950 LIR_Opr in_opr4() const { return _opr4; }
1951 BasicType type() const { return _type; }
1952 LIR_Opr tmp1_opr() const { return _tmp1; }
1953 LIR_Opr tmp2_opr() const { return _tmp2; }
1954 LIR_Opr tmp3_opr() const { return _tmp3; }
1955 LIR_Opr tmp4_opr() const { return _tmp4; }
1956 LIR_Opr tmp5_opr() const { return _tmp5; }
1957
1958 LIR_Condition condition() const { return _condition; }
1959 void set_condition(LIR_Condition condition) { _condition = condition; }
1960
1961 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1962 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1963 void set_in_opr3(LIR_Opr opr) { _opr3 = opr; }
1964 void set_in_opr4(LIR_Opr opr) { _opr4 = opr; }
1965 virtual void emit_code(LIR_Assembler* masm);
1966 virtual LIR_Op4* as_Op4() { return this; }
1967
1968 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1969 };
1970
1971 //--------------------------------
1972 class LabelObj: public CompilationResourceObj {
1973 private:
1974 Label _label;
1975 public:
1976 LabelObj() {}
1977 Label* label() { return &_label; }
1978 };
1979
1980
1981 class LIR_OpLock: public LIR_Op {
1982 friend class LIR_OpVisitState;
1983
1984 private:
1985 LIR_Opr _hdr;
1986 LIR_Opr _obj;
1987 LIR_Opr _lock;
1988 LIR_Opr _scratch;
1989 CodeStub* _stub;
1990 CodeStub* _throw_ie_stub;
1991 public:
1992 LIR_OpLock(LIR_Code code, LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_ie_stub=nullptr)
1993 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1994 , _hdr(hdr)
1995 , _obj(obj)
1996 , _lock(lock)
1997 , _scratch(scratch)
1998 , _stub(stub)
1999 , _throw_ie_stub(throw_ie_stub) {}
2000
2001 LIR_Opr hdr_opr() const { return _hdr; }
2002 LIR_Opr obj_opr() const { return _obj; }
2003 LIR_Opr lock_opr() const { return _lock; }
2004 LIR_Opr scratch_opr() const { return _scratch; }
2005 CodeStub* stub() const { return _stub; }
2006 CodeStub* throw_ie_stub() const { return _throw_ie_stub; }
2007
2008 virtual void emit_code(LIR_Assembler* masm);
2009 virtual LIR_OpLock* as_OpLock() { return this; }
2010 void print_instr(outputStream* out) const PRODUCT_RETURN;
2011 };
2012
2013 class LIR_OpLoadKlass: public LIR_Op {
2014 friend class LIR_OpVisitState;
2015
2016 private:
2017 LIR_Opr _obj;
2018 public:
2019 LIR_OpLoadKlass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info)
2020 : LIR_Op(lir_load_klass, result, info)
2021 , _obj(obj)
2022 {}
2023
2024 LIR_Opr obj() const { return _obj; }
2025
2026 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return this; }
2027 virtual void emit_code(LIR_Assembler* masm);
2028 void print_instr(outputStream* out) const PRODUCT_RETURN;
2029 };
2030
2031 class LIR_OpDelay: public LIR_Op {
2032 friend class LIR_OpVisitState;
2033
2034 private:
2035 LIR_Op* _op;
2036
2037 public:
2038 LIR_OpDelay(LIR_Op* op, CodeEmitInfo* info):
2039 LIR_Op(lir_delay_slot, LIR_OprFact::illegalOpr, info),
2040 _op(op) {
2041 assert(op->code() == lir_nop, "should be filling with nops");
2042 }
2043 virtual void emit_code(LIR_Assembler* masm);
2044 virtual LIR_OpDelay* as_OpDelay() { return this; }
2045 void print_instr(outputStream* out) const PRODUCT_RETURN;
2046 LIR_Op* delay_op() const { return _op; }
2047 CodeEmitInfo* call_info() const { return info(); }
2048 };
2049
2050 #ifdef ASSERT
2051 // LIR_OpAssert
2052 class LIR_OpAssert : public LIR_Op2 {
2053 friend class LIR_OpVisitState;
2054
2055 private:
2056 const char* _msg;
2057 bool _halt;
2058
2059 public:
2060 LIR_OpAssert(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, const char* msg, bool halt)
2061 : LIR_Op2(lir_assert, condition, opr1, opr2)
2062 , _msg(msg)
2063 , _halt(halt) {
2064 }
2065
2066 const char* msg() const { return _msg; }
2067 bool halt() const { return _halt; }
2068
2069 virtual void emit_code(LIR_Assembler* masm);
2070 virtual LIR_OpAssert* as_OpAssert() { return this; }
2071 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2072 };
2073 #endif
2074
2075 // LIR_OpCompareAndSwap
2076 class LIR_OpCompareAndSwap : public LIR_Op {
2077 friend class LIR_OpVisitState;
2078
2079 private:
2080 LIR_Opr _addr;
2081 LIR_Opr _cmp_value;
2082 LIR_Opr _new_value;
2083 LIR_Opr _tmp1;
2084 LIR_Opr _tmp2;
2085
2086 public:
2087 LIR_OpCompareAndSwap(LIR_Code code, LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2088 LIR_Opr t1, LIR_Opr t2, LIR_Opr result)
2089 : LIR_Op(code, result, nullptr) // no result, no info
2090 , _addr(addr)
2091 , _cmp_value(cmp_value)
2092 , _new_value(new_value)
2093 , _tmp1(t1)
2094 , _tmp2(t2) { }
2095
2096 LIR_Opr addr() const { return _addr; }
2097 LIR_Opr cmp_value() const { return _cmp_value; }
2098 LIR_Opr new_value() const { return _new_value; }
2099 LIR_Opr tmp1() const { return _tmp1; }
2100 LIR_Opr tmp2() const { return _tmp2; }
2101
2102 virtual void emit_code(LIR_Assembler* masm);
2103 virtual LIR_OpCompareAndSwap * as_OpCompareAndSwap () { return this; }
2104 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2105 };
2106
2107 // LIR_OpProfileCall
2108 class LIR_OpProfileCall : public LIR_Op {
2109 friend class LIR_OpVisitState;
2110
2111 private:
2112 ciMethod* _profiled_method;
2113 int _profiled_bci;
2114 ciMethod* _profiled_callee;
2115 LIR_Opr _mdo;
2116 LIR_Opr _recv;
2117 LIR_Opr _tmp1;
2118 ciKlass* _known_holder;
2119
2120 public:
2121 // Destroys recv
2122 LIR_OpProfileCall(ciMethod* profiled_method, int profiled_bci, ciMethod* profiled_callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* known_holder)
2123 : LIR_Op(lir_profile_call, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2124 , _profiled_method(profiled_method)
2125 , _profiled_bci(profiled_bci)
2126 , _profiled_callee(profiled_callee)
2127 , _mdo(mdo)
2128 , _recv(recv)
2129 , _tmp1(t1)
2130 , _known_holder(known_holder) { }
2131
2132 ciMethod* profiled_method() const { return _profiled_method; }
2133 int profiled_bci() const { return _profiled_bci; }
2134 ciMethod* profiled_callee() const { return _profiled_callee; }
2135 LIR_Opr mdo() const { return _mdo; }
2136 LIR_Opr recv() const { return _recv; }
2137 LIR_Opr tmp1() const { return _tmp1; }
2138 ciKlass* known_holder() const { return _known_holder; }
2139
2140 virtual void emit_code(LIR_Assembler* masm);
2141 virtual LIR_OpProfileCall* as_OpProfileCall() { return this; }
2142 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2143 bool should_profile_receiver_type() const {
2144 bool callee_is_static = _profiled_callee->is_loaded() && _profiled_callee->is_static();
2145 bool callee_is_private = _profiled_callee->is_loaded() && _profiled_callee->is_private();
2146 Bytecodes::Code bc = _profiled_method->java_code_at_bci(_profiled_bci);
2147 bool call_is_virtual = (bc == Bytecodes::_invokevirtual && !callee_is_private) || bc == Bytecodes::_invokeinterface;
2148 return C1ProfileVirtualCalls && call_is_virtual && !callee_is_static;
2149 }
2150 };
2151
2152 // LIR_OpProfileType
2153 class LIR_OpProfileType : public LIR_Op {
2154 friend class LIR_OpVisitState;
2155
2156 private:
2157 LIR_Opr _mdp;
2158 LIR_Opr _obj;
2159 LIR_Opr _tmp;
2160 ciKlass* _exact_klass; // non null if we know the klass statically (no need to load it from _obj)
2161 intptr_t _current_klass; // what the profiling currently reports
2162 bool _not_null; // true if we know statically that _obj cannot be null
2163 bool _no_conflict; // true if we're profling parameters, _exact_klass is not null and we know
2164 // _exact_klass it the only possible type for this parameter in any context.
2165
2166 public:
2167 // Destroys recv
2168 LIR_OpProfileType(LIR_Opr mdp, LIR_Opr obj, ciKlass* exact_klass, intptr_t current_klass, LIR_Opr tmp, bool not_null, bool no_conflict)
2169 : LIR_Op(lir_profile_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2170 , _mdp(mdp)
2171 , _obj(obj)
2172 , _tmp(tmp)
2173 , _exact_klass(exact_klass)
2174 , _current_klass(current_klass)
2175 , _not_null(not_null)
2176 , _no_conflict(no_conflict) { }
2177
2178 LIR_Opr mdp() const { return _mdp; }
2179 LIR_Opr obj() const { return _obj; }
2180 LIR_Opr tmp() const { return _tmp; }
2181 ciKlass* exact_klass() const { return _exact_klass; }
2182 intptr_t current_klass() const { return _current_klass; }
2183 bool not_null() const { return _not_null; }
2184 bool no_conflict() const { return _no_conflict; }
2185
2186 virtual void emit_code(LIR_Assembler* masm);
2187 virtual LIR_OpProfileType* as_OpProfileType() { return this; }
2188 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2189 };
2190
2191 // LIR_OpProfileInlineType
2192 class LIR_OpProfileInlineType : public LIR_Op {
2193 friend class LIR_OpVisitState;
2194
2195 private:
2196 LIR_Opr _mdp;
2197 LIR_Opr _obj;
2198 int _flag;
2199 LIR_Opr _tmp;
2200 bool _not_null; // true if we know statically that _obj cannot be null
2201
2202 public:
2203 // Destroys recv
2204 LIR_OpProfileInlineType(LIR_Opr mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null)
2205 : LIR_Op(lir_profile_inline_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2206 , _mdp(mdp)
2207 , _obj(obj)
2208 , _flag(flag)
2209 , _tmp(tmp)
2210 , _not_null(not_null) { }
2211
2212 LIR_Opr mdp() const { return _mdp; }
2213 LIR_Opr obj() const { return _obj; }
2214 int flag() const { return _flag; }
2215 LIR_Opr tmp() const { return _tmp; }
2216 bool not_null() const { return _not_null; }
2217
2218 virtual void emit_code(LIR_Assembler* masm);
2219 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return this; }
2220 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2221 };
2222
2223 class LIR_InsertionBuffer;
2224
2225 //--------------------------------LIR_List---------------------------------------------------
2226 // Maintains a list of LIR instructions (one instance of LIR_List per basic block)
2227 // The LIR instructions are appended by the LIR_List class itself;
2228 //
2229 // Notes:
2230 // - all offsets are(should be) in bytes
2231 // - local positions are specified with an offset, with offset 0 being local 0
2232
2233 class LIR_List: public CompilationResourceObj {
2234 private:
2235 LIR_OpList _operations;
2236
2237 Compilation* _compilation;
2238 #ifndef PRODUCT
2239 BlockBegin* _block;
2240 #endif
2241 #ifdef ASSERT
2242 const char * _file;
2243 int _line;
2244 #endif
2245 #ifdef RISCV
2246 LIR_Opr _cmp_opr1;
2247 LIR_Opr _cmp_opr2;
2248 #endif
2249
2250 public:
2251 void append(LIR_Op* op) {
2252 if (op->source() == nullptr)
2253 op->set_source(_compilation->current_instruction());
2254 #ifndef PRODUCT
2255 if (PrintIRWithLIR) {
2256 _compilation->maybe_print_current_instruction();
2257 op->print(); tty->cr();
2258 }
2259 #endif // PRODUCT
2260
2261 #ifdef RISCV
2262 set_cmp_oprs(op);
2263 // lir_cmp set cmp oprs only on riscv
2264 if (op->code() == lir_cmp) return;
2265 #endif
2266
2267 _operations.append(op);
2268
2269 #ifdef ASSERT
2270 op->verify();
2271 op->set_file_and_line(_file, _line);
2272 _file = nullptr;
2273 _line = 0;
2274 #endif
2275 }
2276
2277 LIR_List(Compilation* compilation, BlockBegin* block = nullptr);
2278
2279 #ifdef ASSERT
2280 void set_file_and_line(const char * file, int line);
2281 #endif
2282
2283 #ifdef RISCV
2284 void set_cmp_oprs(LIR_Op* op);
2285 #endif
2286
2287 //---------- accessors ---------------
2288 LIR_OpList* instructions_list() { return &_operations; }
2289 int length() const { return _operations.length(); }
2290 LIR_Op* at(int i) const { return _operations.at(i); }
2291
2292 NOT_PRODUCT(BlockBegin* block() const { return _block; });
2293
2294 // insert LIR_Ops in buffer to right places in LIR_List
2295 void append(LIR_InsertionBuffer* buffer);
2296
2297 //---------- mutators ---------------
2298 void insert_before(int i, LIR_List* op_list) { _operations.insert_before(i, op_list->instructions_list()); }
2299 void insert_before(int i, LIR_Op* op) { _operations.insert_before(i, op); }
2300 void remove_at(int i) { _operations.remove_at(i); }
2301
2302 //---------- printing -------------
2303 void print_instructions() PRODUCT_RETURN;
2304
2305
2306 //---------- instructions -------------
2307 void call_opt_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2308 address dest, LIR_OprList* arguments,
2309 CodeEmitInfo* info) {
2310 append(new LIR_OpJavaCall(lir_optvirtual_call, method, receiver, result, dest, arguments, info));
2311 }
2312 void call_static(ciMethod* method, LIR_Opr result,
2313 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2314 append(new LIR_OpJavaCall(lir_static_call, method, LIR_OprFact::illegalOpr, result, dest, arguments, info));
2315 }
2316 void call_icvirtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2317 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2318 append(new LIR_OpJavaCall(lir_icvirtual_call, method, receiver, result, dest, arguments, info));
2319 }
2320 void call_dynamic(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2321 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2322 append(new LIR_OpJavaCall(lir_dynamic_call, method, receiver, result, dest, arguments, info));
2323 }
2324
2325 void get_thread(LIR_Opr result) { append(new LIR_Op0(lir_get_thread, result)); }
2326 void membar() { append(new LIR_Op0(lir_membar)); }
2327 void membar_acquire() { append(new LIR_Op0(lir_membar_acquire)); }
2328 void membar_release() { append(new LIR_Op0(lir_membar_release)); }
2329 void membar_loadload() { append(new LIR_Op0(lir_membar_loadload)); }
2330 void membar_storestore() { append(new LIR_Op0(lir_membar_storestore)); }
2331 void membar_loadstore() { append(new LIR_Op0(lir_membar_loadstore)); }
2332 void membar_storeload() { append(new LIR_Op0(lir_membar_storeload)); }
2333
2334 void nop() { append(new LIR_Op0(lir_nop)); }
2335
2336 void std_entry(LIR_Opr receiver) { append(new LIR_Op0(lir_std_entry, receiver)); }
2337 void osr_entry(LIR_Opr osrPointer) { append(new LIR_Op0(lir_osr_entry, osrPointer)); }
2338
2339 void on_spin_wait() { append(new LIR_Op0(lir_on_spin_wait)); }
2340
2341 void branch_destination(Label* lbl) { append(new LIR_OpLabel(lbl)); }
2342
2343 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)); }
2344
2345 // result is a stack location for old backend and vreg for UseLinearScan
2346 // stack_loc_temp is an illegal register for old backend
2347 void roundfp(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result) { append(new LIR_OpRoundFP(reg, stack_loc_temp, result)); }
2348 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)); }
2349 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)); }
2350 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)); }
2351 void move_wide(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = nullptr) {
2352 if (UseCompressedOops) {
2353 append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info, lir_move_wide));
2354 } else {
2355 move(src, dst, info);
2356 }
2357 }
2358 void move_wide(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = nullptr) {
2359 if (UseCompressedOops) {
2360 append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info, lir_move_wide));
2361 } else {
2362 move(src, dst, info);
2363 }
2364 }
2365 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)); }
2366
2367 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)); }
2368 void oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info);
2369
2370 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)); }
2371 void klass2reg_patch(Metadata* o, LIR_Opr reg, CodeEmitInfo* info);
2372
2373 void safepoint(LIR_Opr tmp, CodeEmitInfo* info) { append(new LIR_Op1(lir_safepoint, tmp, info)); }
2374 void return_op(LIR_Opr result) { append(new LIR_OpReturn(result)); }
2375
2376 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)); }
2377
2378 void logical_and (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_and, left, right, dst)); }
2379 void logical_or (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_or, left, right, dst)); }
2380 void logical_xor (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_xor, left, right, dst)); }
2381
2382 void null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null = false);
2383 void throw_exception(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2384 append(new LIR_Op2(lir_throw, exceptionPC, exceptionOop, LIR_OprFact::illegalOpr, info));
2385 }
2386 void unwind_exception(LIR_Opr exceptionOop) {
2387 append(new LIR_Op1(lir_unwind, exceptionOop));
2388 }
2389
2390 void push(LIR_Opr opr) { append(new LIR_Op1(lir_push, opr)); }
2391 void pop(LIR_Opr reg) { append(new LIR_Op1(lir_pop, reg)); }
2392
2393 void cmp(LIR_Condition condition, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info = nullptr) {
2394 append(new LIR_Op2(lir_cmp, condition, left, right, info));
2395 }
2396 void cmp(LIR_Condition condition, LIR_Opr left, int right, CodeEmitInfo* info = nullptr) {
2397 cmp(condition, left, LIR_OprFact::intConst(right), info);
2398 }
2399
2400 void cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info);
2401 void cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info);
2402
2403 void cmove(LIR_Condition condition, LIR_Opr src1, LIR_Opr src2, LIR_Opr dst, BasicType type,
2404 LIR_Opr cmp_opr1 = LIR_OprFact::illegalOpr, LIR_Opr cmp_opr2 = LIR_OprFact::illegalOpr) {
2405 append(new LIR_Op4(lir_cmove, condition, src1, src2, cmp_opr1, cmp_opr2, dst, type));
2406 }
2407
2408 void cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2409 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2410 void cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2411 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2412 void cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2413 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2414
2415 void abs (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_abs , from, to, tmp)); }
2416 void negate(LIR_Opr from, LIR_Opr to, LIR_Opr tmp = LIR_OprFact::illegalOpr) { append(new LIR_Op1(lir_neg, from, to, tmp)); }
2417 void sqrt(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_sqrt, from, to, tmp)); }
2418 void fmad(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmad, from, from1, from2, to)); }
2419 void fmaf(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmaf, from, from1, from2, to)); }
2420 void f2hf(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_f2hf, from, to, tmp)); }
2421 void hf2f(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op1(lir_hf2f, from, to, tmp)); }
2422
2423 void add (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_add, left, right, res)); }
2424 void sub (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_sub, left, right, res, info)); }
2425 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_mul, left, right, res)); }
2426 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_mul, left, right, res, tmp)); }
2427 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_div, left, right, res, info)); }
2428 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_div, left, right, res, tmp)); }
2429 void rem (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_rem, left, right, res, info)); }
2430
2431 void volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2432 void volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2433
2434 void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2435
2436 void store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2437 void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2438 void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2439 void volatile_store_mem_reg(LIR_Opr src, LIR_Address* address, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2440 void volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2441
2442 void idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2443 void idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2444 void irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2445 void irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2446
2447 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);
2448 void allocate_array(LIR_Opr dst, LIR_Opr len, LIR_Opr t1,LIR_Opr t2, LIR_Opr t3,LIR_Opr t4, BasicType type, LIR_Opr klass, CodeStub* stub, bool zero_array = true, bool is_null_free = false);
2449
2450 // jump is an unconditional branch
2451 void jump(BlockBegin* block) {
2452 append(new LIR_OpBranch(lir_cond_always, block));
2453 }
2454 void jump(CodeStub* stub) {
2455 append(new LIR_OpBranch(lir_cond_always, stub));
2456 }
2457 void branch(LIR_Condition cond, Label* lbl) {
2458 append(new LIR_OpBranch(cond, lbl));
2459 }
2460 // Should not be used for fp comparisons
2461 void branch(LIR_Condition cond, BlockBegin* block) {
2462 append(new LIR_OpBranch(cond, block));
2463 }
2464 // Should not be used for fp comparisons
2465 void branch(LIR_Condition cond, CodeStub* stub) {
2466 append(new LIR_OpBranch(cond, stub));
2467 }
2468 // Should only be used for fp comparisons
2469 void branch(LIR_Condition cond, BlockBegin* block, BlockBegin* unordered) {
2470 append(new LIR_OpBranch(cond, block, unordered));
2471 }
2472
2473 void shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2474 void shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2475 void unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2476
2477 void shift_left(LIR_Opr value, int count, LIR_Opr dst) { shift_left(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2478 void shift_right(LIR_Opr value, int count, LIR_Opr dst) { shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2479 void unsigned_shift_right(LIR_Opr value, int count, LIR_Opr dst) { unsigned_shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2480
2481 void lcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_cmp_l2i, left, right, dst)); }
2482 void fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less);
2483
2484 void call_runtime_leaf(address routine, LIR_Opr tmp, LIR_Opr result, LIR_OprList* arguments) {
2485 append(new LIR_OpRTCall(routine, tmp, result, arguments));
2486 }
2487
2488 void call_runtime(address routine, LIR_Opr tmp, LIR_Opr result,
2489 LIR_OprList* arguments, CodeEmitInfo* info) {
2490 append(new LIR_OpRTCall(routine, tmp, result, arguments, info));
2491 }
2492
2493 void load_stack_address_monitor(int monitor_ix, LIR_Opr dst) { append(new LIR_Op1(lir_monaddr, LIR_OprFact::intConst(monitor_ix), dst)); }
2494 void unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub);
2495 void lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_ie_stub=nullptr);
2496
2497 void breakpoint() { append(new LIR_Op0(lir_breakpoint)); }
2498
2499 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)); }
2500
2501 void update_crc32(LIR_Opr crc, LIR_Opr val, LIR_Opr res) { append(new LIR_OpUpdateCRC32(crc, val, res)); }
2502
2503 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);
2504 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);
2505 void check_flat_array(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
2506 void check_null_free_array(LIR_Opr array, LIR_Opr tmp);
2507 void substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
2508 LIR_Opr tmp1, LIR_Opr tmp2,
2509 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
2510 CodeEmitInfo* info, CodeStub* stub);
2511
2512 void checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
2513 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
2514 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
2515 ciMethod* profiled_method, int profiled_bci, bool is_null_free);
2516 // MethodData* profiling
2517 void profile_call(ciMethod* method, int bci, ciMethod* callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* cha_klass) {
2518 append(new LIR_OpProfileCall(method, bci, callee, mdo, recv, t1, cha_klass));
2519 }
2520 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) {
2521 append(new LIR_OpProfileType(LIR_OprFact::address(mdp), obj, exact_klass, current_klass, tmp, not_null, no_conflict));
2522 }
2523 void profile_inline_type(LIR_Address* mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null) {
2524 append(new LIR_OpProfileInlineType(LIR_OprFact::address(mdp), obj, flag, tmp, not_null));
2525 }
2526
2527 void xadd(LIR_Opr src, LIR_Opr add, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xadd, src, add, res, tmp)); }
2528 void xchg(LIR_Opr src, LIR_Opr set, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xchg, src, set, res, tmp)); }
2529
2530 void load_klass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info) { append(new LIR_OpLoadKlass(obj, result, info)); }
2531
2532 #ifdef ASSERT
2533 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)); }
2534 #endif
2535 };
2536
2537 void print_LIR(BlockList* blocks);
2538
2539 class LIR_InsertionBuffer : public CompilationResourceObj {
2540 private:
2541 LIR_List* _lir; // the lir list where ops of this buffer should be inserted later (null when uninitialized)
2542
2543 // list of insertion points. index and count are stored alternately:
2544 // _index_and_count[i * 2]: the index into lir list where "count" ops should be inserted
2545 // _index_and_count[i * 2 + 1]: the number of ops to be inserted at index
2546 intStack _index_and_count;
2547
2548 // the LIR_Ops to be inserted
2549 LIR_OpList _ops;
2550
2551 void append_new(int index, int count) { _index_and_count.append(index); _index_and_count.append(count); }
2552 void set_index_at(int i, int value) { _index_and_count.at_put((i << 1), value); }
2553 void set_count_at(int i, int value) { _index_and_count.at_put((i << 1) + 1, value); }
2554
2555 #ifdef ASSERT
2556 void verify();
2557 #endif
2558 public:
2559 LIR_InsertionBuffer() : _lir(nullptr), _index_and_count(8), _ops(8) { }
2560
2561 // must be called before using the insertion buffer
2562 void init(LIR_List* lir) { assert(!initialized(), "already initialized"); _lir = lir; _index_and_count.clear(); _ops.clear(); }
2563 bool initialized() const { return _lir != nullptr; }
2564 // called automatically when the buffer is appended to the LIR_List
2565 void finish() { _lir = nullptr; }
2566
2567 // accessors
2568 LIR_List* lir_list() const { return _lir; }
2569 int number_of_insertion_points() const { return _index_and_count.length() >> 1; }
2570 int index_at(int i) const { return _index_and_count.at((i << 1)); }
2571 int count_at(int i) const { return _index_and_count.at((i << 1) + 1); }
2572
2573 int number_of_ops() const { return _ops.length(); }
2574 LIR_Op* op_at(int i) const { return _ops.at(i); }
2575
2576 // append an instruction to the buffer
2577 void append(int index, LIR_Op* op);
2578
2579 // instruction
2580 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)); }
2581 };
2582
2583
2584 //
2585 // LIR_OpVisitState is used for manipulating LIR_Ops in an abstract way.
2586 // Calling a LIR_Op's visit function with a LIR_OpVisitState causes
2587 // information about the input, output and temporaries used by the
2588 // op to be recorded. It also records whether the op has call semantics
2589 // and also records all the CodeEmitInfos used by this op.
2590 //
2591
2592
2593 class LIR_OpVisitState: public StackObj {
2594 public:
2595 typedef enum { inputMode, firstMode = inputMode, tempMode, outputMode, numModes, invalidMode = -1 } OprMode;
2596
2597 enum {
2598 maxNumberOfOperands = 21,
2599 maxNumberOfInfos = 4
2600 };
2601
2602 private:
2603 LIR_Op* _op;
2604
2605 // optimization: the operands and infos are not stored in a variable-length
2606 // list, but in a fixed-size array to save time of size checks and resizing
2607 int _oprs_len[numModes];
2608 LIR_Opr* _oprs_new[numModes][maxNumberOfOperands];
2609 int _info_len;
2610 CodeEmitInfo* _info_new[maxNumberOfInfos];
2611
2612 bool _has_call;
2613 bool _has_slow_case;
2614
2615
2616 // only include register operands
2617 // addresses are decomposed to the base and index registers
2618 // constants and stack operands are ignored
2619 void append(LIR_Opr& opr, OprMode mode) {
2620 assert(opr->is_valid(), "should not call this otherwise");
2621 assert(mode >= 0 && mode < numModes, "bad mode");
2622
2623 if (opr->is_register()) {
2624 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2625 _oprs_new[mode][_oprs_len[mode]++] = &opr;
2626
2627 } else if (opr->is_pointer()) {
2628 LIR_Address* address = opr->as_address_ptr();
2629 if (address != nullptr) {
2630 // special handling for addresses: add base and index register of the address
2631 // both are always input operands or temp if we want to extend
2632 // their liveness!
2633 if (mode == outputMode) {
2634 mode = inputMode;
2635 }
2636 assert (mode == inputMode || mode == tempMode, "input or temp only for addresses");
2637 if (address->_base->is_valid()) {
2638 assert(address->_base->is_register(), "must be");
2639 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2640 _oprs_new[mode][_oprs_len[mode]++] = &address->_base;
2641 }
2642 if (address->_index->is_valid()) {
2643 assert(address->_index->is_register(), "must be");
2644 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2645 _oprs_new[mode][_oprs_len[mode]++] = &address->_index;
2646 }
2647
2648 } else {
2649 assert(opr->is_constant(), "constant operands are not processed");
2650 }
2651 } else {
2652 assert(opr->is_stack(), "stack operands are not processed");
2653 }
2654 }
2655
2656 void append(CodeEmitInfo* info) {
2657 assert(info != nullptr, "should not call this otherwise");
2658 assert(_info_len < maxNumberOfInfos, "array overflow");
2659 _info_new[_info_len++] = info;
2660 }
2661
2662 public:
2663 LIR_OpVisitState() { reset(); }
2664
2665 LIR_Op* op() const { return _op; }
2666 void set_op(LIR_Op* op) { reset(); _op = op; }
2667
2668 bool has_call() const { return _has_call; }
2669 bool has_slow_case() const { return _has_slow_case; }
2670
2671 void reset() {
2672 _op = nullptr;
2673 _has_call = false;
2674 _has_slow_case = false;
2675
2676 _oprs_len[inputMode] = 0;
2677 _oprs_len[tempMode] = 0;
2678 _oprs_len[outputMode] = 0;
2679 _info_len = 0;
2680 }
2681
2682
2683 int opr_count(OprMode mode) const {
2684 assert(mode >= 0 && mode < numModes, "bad mode");
2685 return _oprs_len[mode];
2686 }
2687
2688 LIR_Opr opr_at(OprMode mode, int index) const {
2689 assert(mode >= 0 && mode < numModes, "bad mode");
2690 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2691 return *_oprs_new[mode][index];
2692 }
2693
2694 void set_opr_at(OprMode mode, int index, LIR_Opr opr) const {
2695 assert(mode >= 0 && mode < numModes, "bad mode");
2696 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2697 *_oprs_new[mode][index] = opr;
2698 }
2699
2700 int info_count() const {
2701 return _info_len;
2702 }
2703
2704 CodeEmitInfo* info_at(int index) const {
2705 assert(index < _info_len, "index out of bounds");
2706 return _info_new[index];
2707 }
2708
2709 XHandlers* all_xhandler();
2710
2711 // collects all register operands of the instruction
2712 void visit(LIR_Op* op);
2713
2714 #ifdef ASSERT
2715 // check that an operation has no operands
2716 bool no_operands(LIR_Op* op);
2717 #endif
2718
2719 // LIR_Op visitor functions use these to fill in the state
2720 void do_input(LIR_Opr& opr) { append(opr, LIR_OpVisitState::inputMode); }
2721 void do_output(LIR_Opr& opr) { append(opr, LIR_OpVisitState::outputMode); }
2722 void do_temp(LIR_Opr& opr) { append(opr, LIR_OpVisitState::tempMode); }
2723 void do_info(CodeEmitInfo* info) { append(info); }
2724
2725 void do_stub(CodeStub* stub);
2726 void do_call() { _has_call = true; }
2727 void do_slow_case() { _has_slow_case = true; }
2728 void do_slow_case(CodeEmitInfo* info) {
2729 _has_slow_case = true;
2730 append(info);
2731 }
2732 };
2733
2734
2735 inline LIR_Opr LIR_Opr::illegalOpr() { return LIR_OprFact::illegalOpr; };
2736
2737 inline LIR_Opr LIR_Opr::nullOpr() { return LIR_OprFact::nullOpr; };
2738
2739 #endif // SHARE_C1_C1_LIR_HPP