1 /*
2 * Copyright (c) 2000, 2024, 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_safepoint
948 , lir_unwind
949 , lir_load_klass
950 , end_op1
951 , begin_op2
952 , lir_branch
953 , lir_cond_float_branch
954 , lir_cmp
955 , lir_cmp_l2i
956 , lir_ucmp_fd2i
957 , lir_cmp_fd2i
958 , lir_add
959 , lir_sub
960 , lir_mul
961 , lir_div
962 , lir_rem
963 , lir_sqrt
964 , lir_abs
965 , lir_neg
966 , lir_tan
967 , lir_f2hf
968 , lir_hf2f
969 , lir_log10
970 , lir_logic_and
971 , lir_logic_or
972 , lir_logic_xor
973 , lir_shl
974 , lir_shr
975 , lir_ushr
976 , lir_alloc_array
977 , lir_throw
978 , lir_xadd
979 , lir_xchg
980 , end_op2
981 , begin_op3
982 , lir_idiv
983 , lir_irem
984 , lir_fmad
985 , lir_fmaf
986 , end_op3
987 , begin_op4
988 , lir_cmove
989 , end_op4
990 , begin_opJavaCall
991 , lir_static_call
992 , lir_optvirtual_call
993 , lir_icvirtual_call
994 , lir_dynamic_call
995 , end_opJavaCall
996 , begin_opArrayCopy
997 , lir_arraycopy
998 , end_opArrayCopy
999 , begin_opUpdateCRC32
1000 , lir_updatecrc32
1001 , end_opUpdateCRC32
1002 , begin_opLock
1003 , lir_lock
1004 , lir_unlock
1005 , end_opLock
1006 , begin_delay_slot
1007 , lir_delay_slot
1008 , end_delay_slot
1009 , begin_opTypeCheck
1010 , lir_instanceof
1011 , lir_checkcast
1012 , lir_store_check
1013 , end_opTypeCheck
1014 , begin_opFlattenedArrayCheck
1015 , lir_flat_array_check
1016 , end_opFlattenedArrayCheck
1017 , begin_opNullFreeArrayCheck
1018 , lir_null_free_array_check
1019 , end_opNullFreeArrayCheck
1020 , begin_opSubstitutabilityCheck
1021 , lir_substitutability_check
1022 , end_opSubstitutabilityCheck
1023 , begin_opCompareAndSwap
1024 , lir_cas_long
1025 , lir_cas_obj
1026 , lir_cas_int
1027 , end_opCompareAndSwap
1028 , begin_opMDOProfile
1029 , lir_profile_call
1030 , lir_profile_type
1031 , lir_profile_inline_type
1032 , end_opMDOProfile
1033 , begin_opAssert
1034 , lir_assert
1035 , end_opAssert
1036 #ifdef INCLUDE_ZGC
1037 , begin_opXLoadBarrierTest
1038 , lir_xloadbarrier_test
1039 , end_opXLoadBarrierTest
1040 #endif
1041 };
1042
1043
1044 enum LIR_Condition {
1045 lir_cond_equal
1046 , lir_cond_notEqual
1047 , lir_cond_less
1048 , lir_cond_lessEqual
1049 , lir_cond_greaterEqual
1050 , lir_cond_greater
1051 , lir_cond_belowEqual
1052 , lir_cond_aboveEqual
1053 , lir_cond_always
1054 , lir_cond_unknown = -1
1055 };
1056
1057
1058 enum LIR_PatchCode {
1059 lir_patch_none,
1060 lir_patch_low,
1061 lir_patch_high,
1062 lir_patch_normal
1063 };
1064
1065
1066 enum LIR_MoveKind {
1067 lir_move_normal,
1068 lir_move_volatile,
1069 lir_move_wide,
1070 lir_move_max_flag
1071 };
1072
1073
1074 // --------------------------------------------------
1075 // LIR_Op
1076 // --------------------------------------------------
1077 class LIR_Op: public CompilationResourceObj {
1078 friend class LIR_OpVisitState;
1079
1080 #ifdef ASSERT
1081 private:
1082 const char * _file;
1083 int _line;
1084 #endif
1085
1086 protected:
1087 LIR_Opr _result;
1088 unsigned short _code;
1089 unsigned short _flags;
1090 CodeEmitInfo* _info;
1091 int _id; // value id for register allocation
1092 int _fpu_pop_count;
1093 Instruction* _source; // for debugging
1094
1095 static void print_condition(outputStream* out, LIR_Condition cond) PRODUCT_RETURN;
1096
1097 protected:
1098 static bool is_in_range(LIR_Code test, LIR_Code start, LIR_Code end) { return start < test && test < end; }
1099
1100 public:
1101 LIR_Op()
1102 :
1103 #ifdef ASSERT
1104 _file(nullptr)
1105 , _line(0),
1106 #endif
1107 _result(LIR_OprFact::illegalOpr)
1108 , _code(lir_none)
1109 , _flags(0)
1110 , _info(nullptr)
1111 , _id(-1)
1112 , _fpu_pop_count(0)
1113 , _source(nullptr) {}
1114
1115 LIR_Op(LIR_Code code, LIR_Opr result, CodeEmitInfo* info)
1116 :
1117 #ifdef ASSERT
1118 _file(nullptr)
1119 , _line(0),
1120 #endif
1121 _result(result)
1122 , _code(code)
1123 , _flags(0)
1124 , _info(info)
1125 , _id(-1)
1126 , _fpu_pop_count(0)
1127 , _source(nullptr) {}
1128
1129 CodeEmitInfo* info() const { return _info; }
1130 LIR_Code code() const { return (LIR_Code)_code; }
1131 LIR_Opr result_opr() const { return _result; }
1132 void set_result_opr(LIR_Opr opr) { _result = opr; }
1133
1134 #ifdef ASSERT
1135 void set_file_and_line(const char * file, int line) {
1136 _file = file;
1137 _line = line;
1138 }
1139 #endif
1140
1141 virtual const char * name() const PRODUCT_RETURN_NULL;
1142 virtual void visit(LIR_OpVisitState* state);
1143
1144 int id() const { return _id; }
1145 void set_id(int id) { _id = id; }
1146
1147 // FPU stack simulation helpers -- only used on Intel
1148 void set_fpu_pop_count(int count) { assert(count >= 0 && count <= 1, "currently only 0 and 1 are valid"); _fpu_pop_count = count; }
1149 int fpu_pop_count() const { return _fpu_pop_count; }
1150 bool pop_fpu_stack() { return _fpu_pop_count > 0; }
1151
1152 Instruction* source() const { return _source; }
1153 void set_source(Instruction* ins) { _source = ins; }
1154
1155 virtual void emit_code(LIR_Assembler* masm) = 0;
1156 virtual void print_instr(outputStream* out) const = 0;
1157 virtual void print_on(outputStream* st) const PRODUCT_RETURN;
1158
1159 virtual bool is_patching() { return false; }
1160 virtual LIR_OpCall* as_OpCall() { return nullptr; }
1161 virtual LIR_OpJavaCall* as_OpJavaCall() { return nullptr; }
1162 virtual LIR_OpLabel* as_OpLabel() { return nullptr; }
1163 virtual LIR_OpDelay* as_OpDelay() { return nullptr; }
1164 virtual LIR_OpLock* as_OpLock() { return nullptr; }
1165 virtual LIR_OpAllocArray* as_OpAllocArray() { return nullptr; }
1166 virtual LIR_OpAllocObj* as_OpAllocObj() { return nullptr; }
1167 virtual LIR_OpRoundFP* as_OpRoundFP() { return nullptr; }
1168 virtual LIR_OpBranch* as_OpBranch() { return nullptr; }
1169 virtual LIR_OpReturn* as_OpReturn() { return nullptr; }
1170 virtual LIR_OpRTCall* as_OpRTCall() { return nullptr; }
1171 virtual LIR_OpConvert* as_OpConvert() { return nullptr; }
1172 virtual LIR_Op0* as_Op0() { return nullptr; }
1173 virtual LIR_Op1* as_Op1() { return nullptr; }
1174 virtual LIR_Op2* as_Op2() { return nullptr; }
1175 virtual LIR_Op3* as_Op3() { return nullptr; }
1176 virtual LIR_Op4* as_Op4() { return nullptr; }
1177 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return nullptr; }
1178 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return nullptr; }
1179 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return nullptr; }
1180 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return nullptr; }
1181 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return nullptr; }
1182 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return nullptr; }
1183 virtual LIR_OpCompareAndSwap* as_OpCompareAndSwap() { return nullptr; }
1184 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return nullptr; }
1185 virtual LIR_OpProfileCall* as_OpProfileCall() { return nullptr; }
1186 virtual LIR_OpProfileType* as_OpProfileType() { return nullptr; }
1187 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return nullptr; }
1188 #ifdef ASSERT
1189 virtual LIR_OpAssert* as_OpAssert() { return nullptr; }
1190 #endif
1191
1192 virtual void verify() const {}
1193 };
1194
1195 // for calls
1196 class LIR_OpCall: public LIR_Op {
1197 friend class LIR_OpVisitState;
1198
1199 protected:
1200 address _addr;
1201 LIR_OprList* _arguments;
1202 protected:
1203 LIR_OpCall(LIR_Code code, address addr, LIR_Opr result,
1204 LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1205 : LIR_Op(code, result, info)
1206 , _addr(addr)
1207 , _arguments(arguments) {}
1208
1209 public:
1210 address addr() const { return _addr; }
1211 const LIR_OprList* arguments() const { return _arguments; }
1212 virtual LIR_OpCall* as_OpCall() { return this; }
1213 };
1214
1215
1216 // --------------------------------------------------
1217 // LIR_OpJavaCall
1218 // --------------------------------------------------
1219 class LIR_OpJavaCall: public LIR_OpCall {
1220 friend class LIR_OpVisitState;
1221
1222 private:
1223 ciMethod* _method;
1224 LIR_Opr _receiver;
1225 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.
1226
1227 public:
1228 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1229 LIR_Opr receiver, LIR_Opr result,
1230 address addr, LIR_OprList* arguments,
1231 CodeEmitInfo* info)
1232 : LIR_OpCall(code, addr, result, arguments, info)
1233 , _method(method)
1234 , _receiver(receiver)
1235 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1236 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1237
1238 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1239 LIR_Opr receiver, LIR_Opr result, intptr_t vtable_offset,
1240 LIR_OprList* arguments, CodeEmitInfo* info)
1241 : LIR_OpCall(code, (address)vtable_offset, result, arguments, info)
1242 , _method(method)
1243 , _receiver(receiver)
1244 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1245 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1246
1247 LIR_Opr receiver() const { return _receiver; }
1248 ciMethod* method() const { return _method; }
1249
1250 // JSR 292 support.
1251 bool is_invokedynamic() const { return code() == lir_dynamic_call; }
1252 bool is_method_handle_invoke() const {
1253 return method()->is_compiled_lambda_form() || // Java-generated lambda form
1254 method()->is_method_handle_intrinsic(); // JVM-generated MH intrinsic
1255 }
1256
1257 virtual void emit_code(LIR_Assembler* masm);
1258 virtual LIR_OpJavaCall* as_OpJavaCall() { return this; }
1259 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1260
1261 bool maybe_return_as_fields(ciInlineKlass** vk = nullptr) const;
1262 };
1263
1264 // --------------------------------------------------
1265 // LIR_OpLabel
1266 // --------------------------------------------------
1267 // Location where a branch can continue
1268 class LIR_OpLabel: public LIR_Op {
1269 friend class LIR_OpVisitState;
1270
1271 private:
1272 Label* _label;
1273 public:
1274 LIR_OpLabel(Label* lbl)
1275 : LIR_Op(lir_label, LIR_OprFact::illegalOpr, nullptr)
1276 , _label(lbl) {}
1277 Label* label() const { return _label; }
1278
1279 virtual void emit_code(LIR_Assembler* masm);
1280 virtual LIR_OpLabel* as_OpLabel() { return this; }
1281 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1282 };
1283
1284 // LIR_OpArrayCopy
1285 class LIR_OpArrayCopy: public LIR_Op {
1286 friend class LIR_OpVisitState;
1287
1288 private:
1289 ArrayCopyStub* _stub;
1290 LIR_Opr _src;
1291 LIR_Opr _src_pos;
1292 LIR_Opr _dst;
1293 LIR_Opr _dst_pos;
1294 LIR_Opr _length;
1295 LIR_Opr _tmp;
1296 ciArrayKlass* _expected_type;
1297 int _flags;
1298
1299 public:
1300 enum Flags {
1301 src_null_check = 1 << 0,
1302 dst_null_check = 1 << 1,
1303 src_pos_positive_check = 1 << 2,
1304 dst_pos_positive_check = 1 << 3,
1305 length_positive_check = 1 << 4,
1306 src_range_check = 1 << 5,
1307 dst_range_check = 1 << 6,
1308 type_check = 1 << 7,
1309 overlapping = 1 << 8,
1310 unaligned = 1 << 9,
1311 src_objarray = 1 << 10,
1312 dst_objarray = 1 << 11,
1313 always_slow_path = 1 << 12,
1314 src_inlinetype_check = 1 << 13,
1315 dst_inlinetype_check = 1 << 14,
1316 all_flags = (1 << 15) - 1
1317 };
1318
1319 LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp,
1320 ciArrayKlass* expected_type, int flags, CodeEmitInfo* info);
1321
1322 LIR_Opr src() const { return _src; }
1323 LIR_Opr src_pos() const { return _src_pos; }
1324 LIR_Opr dst() const { return _dst; }
1325 LIR_Opr dst_pos() const { return _dst_pos; }
1326 LIR_Opr length() const { return _length; }
1327 LIR_Opr tmp() const { return _tmp; }
1328 int flags() const { return _flags; }
1329 ciArrayKlass* expected_type() const { return _expected_type; }
1330 ArrayCopyStub* stub() const { return _stub; }
1331
1332 virtual void emit_code(LIR_Assembler* masm);
1333 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return this; }
1334 void print_instr(outputStream* out) const PRODUCT_RETURN;
1335 };
1336
1337 // LIR_OpUpdateCRC32
1338 class LIR_OpUpdateCRC32: public LIR_Op {
1339 friend class LIR_OpVisitState;
1340
1341 private:
1342 LIR_Opr _crc;
1343 LIR_Opr _val;
1344
1345 public:
1346
1347 LIR_OpUpdateCRC32(LIR_Opr crc, LIR_Opr val, LIR_Opr res);
1348
1349 LIR_Opr crc() const { return _crc; }
1350 LIR_Opr val() const { return _val; }
1351
1352 virtual void emit_code(LIR_Assembler* masm);
1353 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return this; }
1354 void print_instr(outputStream* out) const PRODUCT_RETURN;
1355 };
1356
1357 // --------------------------------------------------
1358 // LIR_Op0
1359 // --------------------------------------------------
1360 class LIR_Op0: public LIR_Op {
1361 friend class LIR_OpVisitState;
1362
1363 public:
1364 LIR_Op0(LIR_Code code)
1365 : LIR_Op(code, LIR_OprFact::illegalOpr, nullptr) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1366 LIR_Op0(LIR_Code code, LIR_Opr result, CodeEmitInfo* info = nullptr)
1367 : LIR_Op(code, result, info) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1368
1369 virtual void emit_code(LIR_Assembler* masm);
1370 virtual LIR_Op0* as_Op0() { return this; }
1371 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1372 };
1373
1374
1375 // --------------------------------------------------
1376 // LIR_Op1
1377 // --------------------------------------------------
1378
1379 class LIR_Op1: public LIR_Op {
1380 friend class LIR_OpVisitState;
1381
1382 protected:
1383 LIR_Opr _opr; // input operand
1384 BasicType _type; // Operand types
1385 LIR_PatchCode _patch; // only required with patchin (NEEDS_CLEANUP: do we want a special instruction for patching?)
1386
1387 static void print_patch_code(outputStream* out, LIR_PatchCode code);
1388
1389 void set_kind(LIR_MoveKind kind) {
1390 assert(code() == lir_move, "must be");
1391 _flags = kind;
1392 }
1393
1394 public:
1395 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)
1396 : LIR_Op(code, result, info)
1397 , _opr(opr)
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, BasicType type, LIR_PatchCode patch, CodeEmitInfo* info, LIR_MoveKind kind)
1402 : LIR_Op(code, result, info)
1403 , _opr(opr)
1404 , _type(type)
1405 , _patch(patch) {
1406 assert(code == lir_move, "must be");
1407 set_kind(kind);
1408 }
1409
1410 LIR_Op1(LIR_Code code, LIR_Opr opr, CodeEmitInfo* info)
1411 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1412 , _opr(opr)
1413 , _type(T_ILLEGAL)
1414 , _patch(lir_patch_none) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1415
1416 LIR_Opr in_opr() const { return _opr; }
1417 LIR_PatchCode patch_code() const { return _patch; }
1418 BasicType type() const { return _type; }
1419
1420 LIR_MoveKind move_kind() const {
1421 assert(code() == lir_move, "must be");
1422 return (LIR_MoveKind)_flags;
1423 }
1424
1425 virtual bool is_patching() { return _patch != lir_patch_none; }
1426 virtual void emit_code(LIR_Assembler* masm);
1427 virtual LIR_Op1* as_Op1() { return this; }
1428 virtual const char * name() const PRODUCT_RETURN_NULL;
1429
1430 void set_in_opr(LIR_Opr opr) { _opr = opr; }
1431
1432 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1433 virtual void verify() const;
1434 };
1435
1436
1437 // for runtime calls
1438 class LIR_OpRTCall: public LIR_OpCall {
1439 friend class LIR_OpVisitState;
1440
1441 private:
1442 LIR_Opr _tmp;
1443 public:
1444 LIR_OpRTCall(address addr, LIR_Opr tmp,
1445 LIR_Opr result, LIR_OprList* arguments, CodeEmitInfo* info = nullptr)
1446 : LIR_OpCall(lir_rtcall, addr, result, arguments, info)
1447 , _tmp(tmp) {}
1448
1449 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1450 virtual void emit_code(LIR_Assembler* masm);
1451 virtual LIR_OpRTCall* as_OpRTCall() { return this; }
1452
1453 LIR_Opr tmp() const { return _tmp; }
1454
1455 virtual void verify() const;
1456 };
1457
1458
1459
1460 class LIR_OpReturn: public LIR_Op1 {
1461 friend class LIR_OpVisitState;
1462
1463 private:
1464 C1SafepointPollStub* _stub;
1465
1466 public:
1467 LIR_OpReturn(LIR_Opr opr);
1468
1469 C1SafepointPollStub* stub() const { return _stub; }
1470 virtual LIR_OpReturn* as_OpReturn() { return this; }
1471 };
1472
1473 class ConversionStub;
1474
1475 class LIR_OpConvert: public LIR_Op1 {
1476 friend class LIR_OpVisitState;
1477
1478 private:
1479 Bytecodes::Code _bytecode;
1480 ConversionStub* _stub;
1481
1482 public:
1483 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub)
1484 : LIR_Op1(lir_convert, opr, result)
1485 , _bytecode(code)
1486 , _stub(stub) {}
1487
1488 Bytecodes::Code bytecode() const { return _bytecode; }
1489 ConversionStub* stub() const { return _stub; }
1490
1491 virtual void emit_code(LIR_Assembler* masm);
1492 virtual LIR_OpConvert* as_OpConvert() { return this; }
1493 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1494
1495 static void print_bytecode(outputStream* out, Bytecodes::Code code) PRODUCT_RETURN;
1496 };
1497
1498
1499 // LIR_OpAllocObj
1500 class LIR_OpAllocObj : public LIR_Op1 {
1501 friend class LIR_OpVisitState;
1502
1503 private:
1504 LIR_Opr _tmp1;
1505 LIR_Opr _tmp2;
1506 LIR_Opr _tmp3;
1507 LIR_Opr _tmp4;
1508 int _hdr_size;
1509 int _obj_size;
1510 CodeStub* _stub;
1511 bool _init_check;
1512
1513 public:
1514 LIR_OpAllocObj(LIR_Opr klass, LIR_Opr result,
1515 LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1516 int hdr_size, int obj_size, bool init_check, CodeStub* stub)
1517 : LIR_Op1(lir_alloc_object, klass, result)
1518 , _tmp1(t1)
1519 , _tmp2(t2)
1520 , _tmp3(t3)
1521 , _tmp4(t4)
1522 , _hdr_size(hdr_size)
1523 , _obj_size(obj_size)
1524 , _stub(stub)
1525 , _init_check(init_check) { }
1526
1527 LIR_Opr klass() const { return in_opr(); }
1528 LIR_Opr obj() const { return result_opr(); }
1529 LIR_Opr tmp1() const { return _tmp1; }
1530 LIR_Opr tmp2() const { return _tmp2; }
1531 LIR_Opr tmp3() const { return _tmp3; }
1532 LIR_Opr tmp4() const { return _tmp4; }
1533 int header_size() const { return _hdr_size; }
1534 int object_size() const { return _obj_size; }
1535 bool init_check() const { return _init_check; }
1536 CodeStub* stub() const { return _stub; }
1537
1538 virtual void emit_code(LIR_Assembler* masm);
1539 virtual LIR_OpAllocObj * as_OpAllocObj () { return this; }
1540 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1541 };
1542
1543
1544 // LIR_OpRoundFP
1545 class LIR_OpRoundFP : public LIR_Op1 {
1546 friend class LIR_OpVisitState;
1547
1548 private:
1549 LIR_Opr _tmp;
1550
1551 public:
1552 LIR_OpRoundFP(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result)
1553 : LIR_Op1(lir_roundfp, reg, result)
1554 , _tmp(stack_loc_temp) {}
1555
1556 LIR_Opr tmp() const { return _tmp; }
1557 virtual LIR_OpRoundFP* as_OpRoundFP() { return this; }
1558 void print_instr(outputStream* out) const PRODUCT_RETURN;
1559 };
1560
1561 // LIR_OpTypeCheck
1562 class LIR_OpTypeCheck: public LIR_Op {
1563 friend class LIR_OpVisitState;
1564
1565 private:
1566 LIR_Opr _object;
1567 LIR_Opr _array;
1568 ciKlass* _klass;
1569 LIR_Opr _tmp1;
1570 LIR_Opr _tmp2;
1571 LIR_Opr _tmp3;
1572 CodeEmitInfo* _info_for_patch;
1573 CodeEmitInfo* _info_for_exception;
1574 CodeStub* _stub;
1575 ciMethod* _profiled_method;
1576 int _profiled_bci;
1577 bool _should_profile;
1578 bool _fast_check;
1579 bool _need_null_check;
1580
1581 public:
1582 LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
1583 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1584 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub, bool need_null_check = true);
1585 LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array,
1586 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception);
1587
1588 LIR_Opr object() const { return _object; }
1589 LIR_Opr array() const { assert(code() == lir_store_check, "not valid"); return _array; }
1590 LIR_Opr tmp1() const { return _tmp1; }
1591 LIR_Opr tmp2() const { return _tmp2; }
1592 LIR_Opr tmp3() const { return _tmp3; }
1593 ciKlass* klass() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _klass; }
1594 bool fast_check() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _fast_check; }
1595 CodeEmitInfo* info_for_patch() const { return _info_for_patch; }
1596 CodeEmitInfo* info_for_exception() const { return _info_for_exception; }
1597 CodeStub* stub() const { return _stub; }
1598
1599 // MethodData* profiling
1600 void set_profiled_method(ciMethod *method) { _profiled_method = method; }
1601 void set_profiled_bci(int bci) { _profiled_bci = bci; }
1602 void set_should_profile(bool b) { _should_profile = b; }
1603 ciMethod* profiled_method() const { return _profiled_method; }
1604 int profiled_bci() const { return _profiled_bci; }
1605 bool should_profile() const { return _should_profile; }
1606 bool need_null_check() const { return _need_null_check; }
1607 virtual bool is_patching() { return _info_for_patch != nullptr; }
1608 virtual void emit_code(LIR_Assembler* masm);
1609 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return this; }
1610 void print_instr(outputStream* out) const PRODUCT_RETURN;
1611 };
1612
1613 // LIR_OpFlattenedArrayCheck
1614 class LIR_OpFlattenedArrayCheck: public LIR_Op {
1615 friend class LIR_OpVisitState;
1616
1617 private:
1618 LIR_Opr _array;
1619 LIR_Opr _value;
1620 LIR_Opr _tmp;
1621 CodeStub* _stub;
1622 public:
1623 LIR_OpFlattenedArrayCheck(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
1624 LIR_Opr array() const { return _array; }
1625 LIR_Opr value() const { return _value; }
1626 LIR_Opr tmp() const { return _tmp; }
1627 CodeStub* stub() const { return _stub; }
1628
1629 virtual void emit_code(LIR_Assembler* masm);
1630 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return this; }
1631 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1632 };
1633
1634 // LIR_OpNullFreeArrayCheck
1635 class LIR_OpNullFreeArrayCheck: public LIR_Op {
1636 friend class LIR_OpVisitState;
1637
1638 private:
1639 LIR_Opr _array;
1640 LIR_Opr _tmp;
1641 public:
1642 LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp);
1643 LIR_Opr array() const { return _array; }
1644 LIR_Opr tmp() const { return _tmp; }
1645
1646 virtual void emit_code(LIR_Assembler* masm);
1647 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return this; }
1648 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1649 };
1650
1651 class LIR_OpSubstitutabilityCheck: public LIR_Op {
1652 friend class LIR_OpVisitState;
1653
1654 private:
1655 LIR_Opr _left;
1656 LIR_Opr _right;
1657 LIR_Opr _equal_result;
1658 LIR_Opr _not_equal_result;
1659 LIR_Opr _tmp1;
1660 LIR_Opr _tmp2;
1661 ciKlass* _left_klass;
1662 ciKlass* _right_klass;
1663 LIR_Opr _left_klass_op;
1664 LIR_Opr _right_klass_op;
1665 CodeStub* _stub;
1666 public:
1667 LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
1668 LIR_Opr tmp1, LIR_Opr tmp2,
1669 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
1670 CodeEmitInfo* info, CodeStub* stub);
1671
1672 LIR_Opr left() const { return _left; }
1673 LIR_Opr right() const { return _right; }
1674 LIR_Opr equal_result() const { return _equal_result; }
1675 LIR_Opr not_equal_result() const { return _not_equal_result; }
1676 LIR_Opr tmp1() const { return _tmp1; }
1677 LIR_Opr tmp2() const { return _tmp2; }
1678 ciKlass* left_klass() const { return _left_klass; }
1679 ciKlass* right_klass() const { return _right_klass; }
1680 LIR_Opr left_klass_op() const { return _left_klass_op; }
1681 LIR_Opr right_klass_op() const { return _right_klass_op; }
1682 CodeStub* stub() const { return _stub; }
1683
1684 virtual void emit_code(LIR_Assembler* masm);
1685 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return this; }
1686 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1687 };
1688
1689 // LIR_Op2
1690 class LIR_Op2: public LIR_Op {
1691 friend class LIR_OpVisitState;
1692
1693 int _fpu_stack_size; // for sin/cos implementation on Intel
1694
1695 protected:
1696 LIR_Opr _opr1;
1697 LIR_Opr _opr2;
1698 LIR_Opr _tmp1;
1699 LIR_Opr _tmp2;
1700 LIR_Opr _tmp3;
1701 LIR_Opr _tmp4;
1702 LIR_Opr _tmp5;
1703 LIR_Condition _condition;
1704 BasicType _type;
1705
1706 void verify() const;
1707
1708 public:
1709 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1710 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1711 , _fpu_stack_size(0)
1712 , _opr1(opr1)
1713 , _opr2(opr2)
1714 , _tmp1(LIR_OprFact::illegalOpr)
1715 , _tmp2(LIR_OprFact::illegalOpr)
1716 , _tmp3(LIR_OprFact::illegalOpr)
1717 , _tmp4(LIR_OprFact::illegalOpr)
1718 , _tmp5(LIR_OprFact::illegalOpr)
1719 , _condition(condition)
1720 , _type(type) {
1721 assert(code == lir_cmp || code == lir_branch || code == lir_cond_float_branch || code == lir_assert, "code check");
1722 }
1723
1724 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type)
1725 : LIR_Op(code, result, nullptr)
1726 , _fpu_stack_size(0)
1727 , _opr1(opr1)
1728 , _opr2(opr2)
1729 , _tmp1(LIR_OprFact::illegalOpr)
1730 , _tmp2(LIR_OprFact::illegalOpr)
1731 , _tmp3(LIR_OprFact::illegalOpr)
1732 , _tmp4(LIR_OprFact::illegalOpr)
1733 , _tmp5(LIR_OprFact::illegalOpr)
1734 , _condition(condition)
1735 , _type(type) {
1736 assert(code == lir_cmove, "code check");
1737 assert(type != T_ILLEGAL, "cmove should have type");
1738 }
1739
1740 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result = LIR_OprFact::illegalOpr,
1741 CodeEmitInfo* info = nullptr, BasicType type = T_ILLEGAL)
1742 : LIR_Op(code, result, info)
1743 , _fpu_stack_size(0)
1744 , _opr1(opr1)
1745 , _opr2(opr2)
1746 , _tmp1(LIR_OprFact::illegalOpr)
1747 , _tmp2(LIR_OprFact::illegalOpr)
1748 , _tmp3(LIR_OprFact::illegalOpr)
1749 , _tmp4(LIR_OprFact::illegalOpr)
1750 , _tmp5(LIR_OprFact::illegalOpr)
1751 , _condition(lir_cond_unknown)
1752 , _type(type) {
1753 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1754 }
1755
1756 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, LIR_Opr tmp1, LIR_Opr tmp2 = LIR_OprFact::illegalOpr,
1757 LIR_Opr tmp3 = LIR_OprFact::illegalOpr, LIR_Opr tmp4 = LIR_OprFact::illegalOpr, LIR_Opr tmp5 = LIR_OprFact::illegalOpr)
1758 : LIR_Op(code, result, nullptr)
1759 , _fpu_stack_size(0)
1760 , _opr1(opr1)
1761 , _opr2(opr2)
1762 , _tmp1(tmp1)
1763 , _tmp2(tmp2)
1764 , _tmp3(tmp3)
1765 , _tmp4(tmp4)
1766 , _tmp5(tmp5)
1767 , _condition(lir_cond_unknown)
1768 , _type(T_ILLEGAL) {
1769 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1770 }
1771
1772 LIR_Opr in_opr1() const { return _opr1; }
1773 LIR_Opr in_opr2() const { return _opr2; }
1774 BasicType type() const { return _type; }
1775 LIR_Opr tmp1_opr() const { return _tmp1; }
1776 LIR_Opr tmp2_opr() const { return _tmp2; }
1777 LIR_Opr tmp3_opr() const { return _tmp3; }
1778 LIR_Opr tmp4_opr() const { return _tmp4; }
1779 LIR_Opr tmp5_opr() const { return _tmp5; }
1780 LIR_Condition condition() const {
1781 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch || code() == lir_assert, "only valid for branch and assert"); return _condition;
1782 }
1783 void set_condition(LIR_Condition condition) {
1784 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch, "only valid for branch"); _condition = condition;
1785 }
1786
1787 void set_fpu_stack_size(int size) { _fpu_stack_size = size; }
1788 int fpu_stack_size() const { return _fpu_stack_size; }
1789
1790 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1791 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1792
1793 virtual void emit_code(LIR_Assembler* masm);
1794 virtual LIR_Op2* as_Op2() { return this; }
1795 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1796 };
1797
1798 class LIR_OpBranch: public LIR_Op2 {
1799 friend class LIR_OpVisitState;
1800
1801 private:
1802 Label* _label;
1803 BlockBegin* _block; // if this is a branch to a block, this is the block
1804 BlockBegin* _ublock; // if this is a float-branch, this is the unordered block
1805 CodeStub* _stub; // if this is a branch to a stub, this is the stub
1806
1807 public:
1808 LIR_OpBranch(LIR_Condition cond, Label* lbl)
1809 : LIR_Op2(lir_branch, cond, LIR_OprFact::illegalOpr, LIR_OprFact::illegalOpr, (CodeEmitInfo*) nullptr)
1810 , _label(lbl)
1811 , _block(nullptr)
1812 , _ublock(nullptr)
1813 , _stub(nullptr) { }
1814
1815 LIR_OpBranch(LIR_Condition cond, BlockBegin* block);
1816 LIR_OpBranch(LIR_Condition cond, CodeStub* stub);
1817
1818 // for unordered comparisons
1819 LIR_OpBranch(LIR_Condition cond, BlockBegin* block, BlockBegin* ublock);
1820
1821 LIR_Condition cond() const {
1822 return condition();
1823 }
1824
1825 void set_cond(LIR_Condition cond) {
1826 set_condition(cond);
1827 }
1828
1829 Label* label() const { return _label; }
1830 BlockBegin* block() const { return _block; }
1831 BlockBegin* ublock() const { return _ublock; }
1832 CodeStub* stub() const { return _stub; }
1833
1834 void change_block(BlockBegin* b);
1835 void change_ublock(BlockBegin* b);
1836 void negate_cond();
1837
1838 virtual void emit_code(LIR_Assembler* masm);
1839 virtual LIR_OpBranch* as_OpBranch() { return this; }
1840 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1841 };
1842
1843 class LIR_OpAllocArray : public LIR_Op {
1844 friend class LIR_OpVisitState;
1845
1846 private:
1847 LIR_Opr _klass;
1848 LIR_Opr _len;
1849 LIR_Opr _tmp1;
1850 LIR_Opr _tmp2;
1851 LIR_Opr _tmp3;
1852 LIR_Opr _tmp4;
1853 CodeStub* _stub;
1854 BasicType _type;
1855 bool _zero_array;
1856 bool _is_null_free;
1857
1858 public:
1859 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)
1860 : LIR_Op(lir_alloc_array, result, nullptr)
1861 , _klass(klass)
1862 , _len(len)
1863 , _tmp1(t1)
1864 , _tmp2(t2)
1865 , _tmp3(t3)
1866 , _tmp4(t4)
1867 , _stub(stub)
1868 , _type(type)
1869 , _zero_array(zero_array)
1870 , _is_null_free(is_null_free) {}
1871
1872 LIR_Opr klass() const { return _klass; }
1873 LIR_Opr len() const { return _len; }
1874 LIR_Opr obj() const { return result_opr(); }
1875 LIR_Opr tmp1() const { return _tmp1; }
1876 LIR_Opr tmp2() const { return _tmp2; }
1877 LIR_Opr tmp3() const { return _tmp3; }
1878 LIR_Opr tmp4() const { return _tmp4; }
1879 BasicType type() const { return _type; }
1880 CodeStub* stub() const { return _stub; }
1881 bool zero_array() const { return _zero_array; }
1882 bool is_null_free() const { return _is_null_free;}
1883
1884 virtual void emit_code(LIR_Assembler* masm);
1885 virtual LIR_OpAllocArray * as_OpAllocArray () { return this; }
1886 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1887 };
1888
1889
1890 class LIR_Op3: public LIR_Op {
1891 friend class LIR_OpVisitState;
1892
1893 private:
1894 LIR_Opr _opr1;
1895 LIR_Opr _opr2;
1896 LIR_Opr _opr3;
1897 public:
1898 LIR_Op3(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr result, CodeEmitInfo* info = nullptr)
1899 : LIR_Op(code, result, info)
1900 , _opr1(opr1)
1901 , _opr2(opr2)
1902 , _opr3(opr3) { assert(is_in_range(code, begin_op3, end_op3), "code check"); }
1903 LIR_Opr in_opr1() const { return _opr1; }
1904 LIR_Opr in_opr2() const { return _opr2; }
1905 LIR_Opr in_opr3() const { return _opr3; }
1906
1907 virtual void emit_code(LIR_Assembler* masm);
1908 virtual LIR_Op3* as_Op3() { return this; }
1909 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1910 };
1911
1912 class LIR_Op4: public LIR_Op {
1913 friend class LIR_OpVisitState;
1914 protected:
1915 LIR_Opr _opr1;
1916 LIR_Opr _opr2;
1917 LIR_Opr _opr3;
1918 LIR_Opr _opr4;
1919 LIR_Opr _tmp1;
1920 LIR_Opr _tmp2;
1921 LIR_Opr _tmp3;
1922 LIR_Opr _tmp4;
1923 LIR_Opr _tmp5;
1924 LIR_Condition _condition;
1925 BasicType _type;
1926
1927 public:
1928 LIR_Op4(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr opr4,
1929 LIR_Opr result, BasicType type)
1930 : LIR_Op(code, result, nullptr)
1931 , _opr1(opr1)
1932 , _opr2(opr2)
1933 , _opr3(opr3)
1934 , _opr4(opr4)
1935 , _tmp1(LIR_OprFact::illegalOpr)
1936 , _tmp2(LIR_OprFact::illegalOpr)
1937 , _tmp3(LIR_OprFact::illegalOpr)
1938 , _tmp4(LIR_OprFact::illegalOpr)
1939 , _tmp5(LIR_OprFact::illegalOpr)
1940 , _condition(condition)
1941 , _type(type) {
1942 assert(code == lir_cmove, "code check");
1943 assert(type != T_ILLEGAL, "cmove should have type");
1944 }
1945
1946 LIR_Opr in_opr1() const { return _opr1; }
1947 LIR_Opr in_opr2() const { return _opr2; }
1948 LIR_Opr in_opr3() const { return _opr3; }
1949 LIR_Opr in_opr4() const { return _opr4; }
1950 BasicType type() const { return _type; }
1951 LIR_Opr tmp1_opr() const { return _tmp1; }
1952 LIR_Opr tmp2_opr() const { return _tmp2; }
1953 LIR_Opr tmp3_opr() const { return _tmp3; }
1954 LIR_Opr tmp4_opr() const { return _tmp4; }
1955 LIR_Opr tmp5_opr() const { return _tmp5; }
1956
1957 LIR_Condition condition() const { return _condition; }
1958 void set_condition(LIR_Condition condition) { _condition = condition; }
1959
1960 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1961 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1962 void set_in_opr3(LIR_Opr opr) { _opr3 = opr; }
1963 void set_in_opr4(LIR_Opr opr) { _opr4 = opr; }
1964 virtual void emit_code(LIR_Assembler* masm);
1965 virtual LIR_Op4* as_Op4() { return this; }
1966
1967 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1968 };
1969
1970 //--------------------------------
1971 class LabelObj: public CompilationResourceObj {
1972 private:
1973 Label _label;
1974 public:
1975 LabelObj() {}
1976 Label* label() { return &_label; }
1977 };
1978
1979
1980 class LIR_OpLock: public LIR_Op {
1981 friend class LIR_OpVisitState;
1982
1983 private:
1984 LIR_Opr _hdr;
1985 LIR_Opr _obj;
1986 LIR_Opr _lock;
1987 LIR_Opr _scratch;
1988 CodeStub* _stub;
1989 CodeStub* _throw_ie_stub;
1990 public:
1991 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)
1992 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1993 , _hdr(hdr)
1994 , _obj(obj)
1995 , _lock(lock)
1996 , _scratch(scratch)
1997 , _stub(stub)
1998 , _throw_ie_stub(throw_ie_stub) {}
1999
2000 LIR_Opr hdr_opr() const { return _hdr; }
2001 LIR_Opr obj_opr() const { return _obj; }
2002 LIR_Opr lock_opr() const { return _lock; }
2003 LIR_Opr scratch_opr() const { return _scratch; }
2004 CodeStub* stub() const { return _stub; }
2005 CodeStub* throw_ie_stub() const { return _throw_ie_stub; }
2006
2007 virtual void emit_code(LIR_Assembler* masm);
2008 virtual LIR_OpLock* as_OpLock() { return this; }
2009 void print_instr(outputStream* out) const PRODUCT_RETURN;
2010 };
2011
2012 class LIR_OpLoadKlass: public LIR_Op {
2013 friend class LIR_OpVisitState;
2014
2015 private:
2016 LIR_Opr _obj;
2017 public:
2018 LIR_OpLoadKlass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info)
2019 : LIR_Op(lir_load_klass, result, info)
2020 , _obj(obj)
2021 {}
2022
2023 LIR_Opr obj() const { return _obj; }
2024
2025 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return this; }
2026 virtual void emit_code(LIR_Assembler* masm);
2027 void print_instr(outputStream* out) const PRODUCT_RETURN;
2028 };
2029
2030 class LIR_OpDelay: public LIR_Op {
2031 friend class LIR_OpVisitState;
2032
2033 private:
2034 LIR_Op* _op;
2035
2036 public:
2037 LIR_OpDelay(LIR_Op* op, CodeEmitInfo* info):
2038 LIR_Op(lir_delay_slot, LIR_OprFact::illegalOpr, info),
2039 _op(op) {
2040 assert(op->code() == lir_nop, "should be filling with nops");
2041 }
2042 virtual void emit_code(LIR_Assembler* masm);
2043 virtual LIR_OpDelay* as_OpDelay() { return this; }
2044 void print_instr(outputStream* out) const PRODUCT_RETURN;
2045 LIR_Op* delay_op() const { return _op; }
2046 CodeEmitInfo* call_info() const { return info(); }
2047 };
2048
2049 #ifdef ASSERT
2050 // LIR_OpAssert
2051 class LIR_OpAssert : public LIR_Op2 {
2052 friend class LIR_OpVisitState;
2053
2054 private:
2055 const char* _msg;
2056 bool _halt;
2057
2058 public:
2059 LIR_OpAssert(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, const char* msg, bool halt)
2060 : LIR_Op2(lir_assert, condition, opr1, opr2)
2061 , _msg(msg)
2062 , _halt(halt) {
2063 }
2064
2065 const char* msg() const { return _msg; }
2066 bool halt() const { return _halt; }
2067
2068 virtual void emit_code(LIR_Assembler* masm);
2069 virtual LIR_OpAssert* as_OpAssert() { return this; }
2070 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2071 };
2072 #endif
2073
2074 // LIR_OpCompareAndSwap
2075 class LIR_OpCompareAndSwap : public LIR_Op {
2076 friend class LIR_OpVisitState;
2077
2078 private:
2079 LIR_Opr _addr;
2080 LIR_Opr _cmp_value;
2081 LIR_Opr _new_value;
2082 LIR_Opr _tmp1;
2083 LIR_Opr _tmp2;
2084
2085 public:
2086 LIR_OpCompareAndSwap(LIR_Code code, LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2087 LIR_Opr t1, LIR_Opr t2, LIR_Opr result)
2088 : LIR_Op(code, result, nullptr) // no result, no info
2089 , _addr(addr)
2090 , _cmp_value(cmp_value)
2091 , _new_value(new_value)
2092 , _tmp1(t1)
2093 , _tmp2(t2) { }
2094
2095 LIR_Opr addr() const { return _addr; }
2096 LIR_Opr cmp_value() const { return _cmp_value; }
2097 LIR_Opr new_value() const { return _new_value; }
2098 LIR_Opr tmp1() const { return _tmp1; }
2099 LIR_Opr tmp2() const { return _tmp2; }
2100
2101 virtual void emit_code(LIR_Assembler* masm);
2102 virtual LIR_OpCompareAndSwap * as_OpCompareAndSwap () { return this; }
2103 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2104 };
2105
2106 // LIR_OpProfileCall
2107 class LIR_OpProfileCall : public LIR_Op {
2108 friend class LIR_OpVisitState;
2109
2110 private:
2111 ciMethod* _profiled_method;
2112 int _profiled_bci;
2113 ciMethod* _profiled_callee;
2114 LIR_Opr _mdo;
2115 LIR_Opr _recv;
2116 LIR_Opr _tmp1;
2117 ciKlass* _known_holder;
2118
2119 public:
2120 // Destroys recv
2121 LIR_OpProfileCall(ciMethod* profiled_method, int profiled_bci, ciMethod* profiled_callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* known_holder)
2122 : LIR_Op(lir_profile_call, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2123 , _profiled_method(profiled_method)
2124 , _profiled_bci(profiled_bci)
2125 , _profiled_callee(profiled_callee)
2126 , _mdo(mdo)
2127 , _recv(recv)
2128 , _tmp1(t1)
2129 , _known_holder(known_holder) { }
2130
2131 ciMethod* profiled_method() const { return _profiled_method; }
2132 int profiled_bci() const { return _profiled_bci; }
2133 ciMethod* profiled_callee() const { return _profiled_callee; }
2134 LIR_Opr mdo() const { return _mdo; }
2135 LIR_Opr recv() const { return _recv; }
2136 LIR_Opr tmp1() const { return _tmp1; }
2137 ciKlass* known_holder() const { return _known_holder; }
2138
2139 virtual void emit_code(LIR_Assembler* masm);
2140 virtual LIR_OpProfileCall* as_OpProfileCall() { return this; }
2141 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2142 bool should_profile_receiver_type() const {
2143 bool callee_is_static = _profiled_callee->is_loaded() && _profiled_callee->is_static();
2144 bool callee_is_private = _profiled_callee->is_loaded() && _profiled_callee->is_private();
2145 Bytecodes::Code bc = _profiled_method->java_code_at_bci(_profiled_bci);
2146 bool call_is_virtual = (bc == Bytecodes::_invokevirtual && !callee_is_private) || bc == Bytecodes::_invokeinterface;
2147 return C1ProfileVirtualCalls && call_is_virtual && !callee_is_static;
2148 }
2149 };
2150
2151 // LIR_OpProfileType
2152 class LIR_OpProfileType : public LIR_Op {
2153 friend class LIR_OpVisitState;
2154
2155 private:
2156 LIR_Opr _mdp;
2157 LIR_Opr _obj;
2158 LIR_Opr _tmp;
2159 ciKlass* _exact_klass; // non null if we know the klass statically (no need to load it from _obj)
2160 intptr_t _current_klass; // what the profiling currently reports
2161 bool _not_null; // true if we know statically that _obj cannot be null
2162 bool _no_conflict; // true if we're profling parameters, _exact_klass is not null and we know
2163 // _exact_klass it the only possible type for this parameter in any context.
2164
2165 public:
2166 // Destroys recv
2167 LIR_OpProfileType(LIR_Opr mdp, LIR_Opr obj, ciKlass* exact_klass, intptr_t current_klass, LIR_Opr tmp, bool not_null, bool no_conflict)
2168 : LIR_Op(lir_profile_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2169 , _mdp(mdp)
2170 , _obj(obj)
2171 , _tmp(tmp)
2172 , _exact_klass(exact_klass)
2173 , _current_klass(current_klass)
2174 , _not_null(not_null)
2175 , _no_conflict(no_conflict) { }
2176
2177 LIR_Opr mdp() const { return _mdp; }
2178 LIR_Opr obj() const { return _obj; }
2179 LIR_Opr tmp() const { return _tmp; }
2180 ciKlass* exact_klass() const { return _exact_klass; }
2181 intptr_t current_klass() const { return _current_klass; }
2182 bool not_null() const { return _not_null; }
2183 bool no_conflict() const { return _no_conflict; }
2184
2185 virtual void emit_code(LIR_Assembler* masm);
2186 virtual LIR_OpProfileType* as_OpProfileType() { return this; }
2187 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2188 };
2189
2190 // LIR_OpProfileInlineType
2191 class LIR_OpProfileInlineType : public LIR_Op {
2192 friend class LIR_OpVisitState;
2193
2194 private:
2195 LIR_Opr _mdp;
2196 LIR_Opr _obj;
2197 int _flag;
2198 LIR_Opr _tmp;
2199 bool _not_null; // true if we know statically that _obj cannot be null
2200
2201 public:
2202 // Destroys recv
2203 LIR_OpProfileInlineType(LIR_Opr mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null)
2204 : LIR_Op(lir_profile_inline_type, LIR_OprFact::illegalOpr, nullptr) // no result, no info
2205 , _mdp(mdp)
2206 , _obj(obj)
2207 , _flag(flag)
2208 , _tmp(tmp)
2209 , _not_null(not_null) { }
2210
2211 LIR_Opr mdp() const { return _mdp; }
2212 LIR_Opr obj() const { return _obj; }
2213 int flag() const { return _flag; }
2214 LIR_Opr tmp() const { return _tmp; }
2215 bool not_null() const { return _not_null; }
2216
2217 virtual void emit_code(LIR_Assembler* masm);
2218 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return this; }
2219 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2220 };
2221
2222 class LIR_InsertionBuffer;
2223
2224 //--------------------------------LIR_List---------------------------------------------------
2225 // Maintains a list of LIR instructions (one instance of LIR_List per basic block)
2226 // The LIR instructions are appended by the LIR_List class itself;
2227 //
2228 // Notes:
2229 // - all offsets are(should be) in bytes
2230 // - local positions are specified with an offset, with offset 0 being local 0
2231
2232 class LIR_List: public CompilationResourceObj {
2233 private:
2234 LIR_OpList _operations;
2235
2236 Compilation* _compilation;
2237 #ifndef PRODUCT
2238 BlockBegin* _block;
2239 #endif
2240 #ifdef ASSERT
2241 const char * _file;
2242 int _line;
2243 #endif
2244 #ifdef RISCV
2245 LIR_Opr _cmp_opr1;
2246 LIR_Opr _cmp_opr2;
2247 #endif
2248
2249 public:
2250 void append(LIR_Op* op) {
2251 if (op->source() == nullptr)
2252 op->set_source(_compilation->current_instruction());
2253 #ifndef PRODUCT
2254 if (PrintIRWithLIR) {
2255 _compilation->maybe_print_current_instruction();
2256 op->print(); tty->cr();
2257 }
2258 #endif // PRODUCT
2259
2260 #ifdef RISCV
2261 set_cmp_oprs(op);
2262 // lir_cmp set cmp oprs only on riscv
2263 if (op->code() == lir_cmp) return;
2264 #endif
2265
2266 _operations.append(op);
2267
2268 #ifdef ASSERT
2269 op->verify();
2270 op->set_file_and_line(_file, _line);
2271 _file = nullptr;
2272 _line = 0;
2273 #endif
2274 }
2275
2276 LIR_List(Compilation* compilation, BlockBegin* block = nullptr);
2277
2278 #ifdef ASSERT
2279 void set_file_and_line(const char * file, int line);
2280 #endif
2281
2282 #ifdef RISCV
2283 void set_cmp_oprs(LIR_Op* op);
2284 #endif
2285
2286 //---------- accessors ---------------
2287 LIR_OpList* instructions_list() { return &_operations; }
2288 int length() const { return _operations.length(); }
2289 LIR_Op* at(int i) const { return _operations.at(i); }
2290
2291 NOT_PRODUCT(BlockBegin* block() const { return _block; });
2292
2293 // insert LIR_Ops in buffer to right places in LIR_List
2294 void append(LIR_InsertionBuffer* buffer);
2295
2296 //---------- mutators ---------------
2297 void insert_before(int i, LIR_List* op_list) { _operations.insert_before(i, op_list->instructions_list()); }
2298 void insert_before(int i, LIR_Op* op) { _operations.insert_before(i, op); }
2299 void remove_at(int i) { _operations.remove_at(i); }
2300
2301 //---------- printing -------------
2302 void print_instructions() PRODUCT_RETURN;
2303
2304
2305 //---------- instructions -------------
2306 void call_opt_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2307 address dest, LIR_OprList* arguments,
2308 CodeEmitInfo* info) {
2309 append(new LIR_OpJavaCall(lir_optvirtual_call, method, receiver, result, dest, arguments, info));
2310 }
2311 void call_static(ciMethod* method, LIR_Opr result,
2312 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2313 append(new LIR_OpJavaCall(lir_static_call, method, LIR_OprFact::illegalOpr, result, dest, arguments, info));
2314 }
2315 void call_icvirtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2316 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2317 append(new LIR_OpJavaCall(lir_icvirtual_call, method, receiver, result, dest, arguments, info));
2318 }
2319 void call_dynamic(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2320 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2321 append(new LIR_OpJavaCall(lir_dynamic_call, method, receiver, result, dest, arguments, info));
2322 }
2323
2324 void get_thread(LIR_Opr result) { append(new LIR_Op0(lir_get_thread, result)); }
2325 void membar() { append(new LIR_Op0(lir_membar)); }
2326 void membar_acquire() { append(new LIR_Op0(lir_membar_acquire)); }
2327 void membar_release() { append(new LIR_Op0(lir_membar_release)); }
2328 void membar_loadload() { append(new LIR_Op0(lir_membar_loadload)); }
2329 void membar_storestore() { append(new LIR_Op0(lir_membar_storestore)); }
2330 void membar_loadstore() { append(new LIR_Op0(lir_membar_loadstore)); }
2331 void membar_storeload() { append(new LIR_Op0(lir_membar_storeload)); }
2332
2333 void nop() { append(new LIR_Op0(lir_nop)); }
2334
2335 void std_entry(LIR_Opr receiver) { append(new LIR_Op0(lir_std_entry, receiver)); }
2336 void osr_entry(LIR_Opr osrPointer) { append(new LIR_Op0(lir_osr_entry, osrPointer)); }
2337
2338 void on_spin_wait() { append(new LIR_Op0(lir_on_spin_wait)); }
2339
2340 void branch_destination(Label* lbl) { append(new LIR_OpLabel(lbl)); }
2341
2342 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)); }
2343
2344 // result is a stack location for old backend and vreg for UseLinearScan
2345 // stack_loc_temp is an illegal register for old backend
2346 void roundfp(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result) { append(new LIR_OpRoundFP(reg, stack_loc_temp, result)); }
2347 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)); }
2348 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)); }
2349 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)); }
2350 void move_wide(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = nullptr) {
2351 if (UseCompressedOops) {
2352 append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info, lir_move_wide));
2353 } else {
2354 move(src, dst, info);
2355 }
2356 }
2357 void move_wide(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = nullptr) {
2358 if (UseCompressedOops) {
2359 append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info, lir_move_wide));
2360 } else {
2361 move(src, dst, info);
2362 }
2363 }
2364 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)); }
2365
2366 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)); }
2367 void oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info);
2368
2369 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)); }
2370 void klass2reg_patch(Metadata* o, LIR_Opr reg, CodeEmitInfo* info);
2371
2372 void safepoint(LIR_Opr tmp, CodeEmitInfo* info) { append(new LIR_Op1(lir_safepoint, tmp, info)); }
2373 void return_op(LIR_Opr result) { append(new LIR_OpReturn(result)); }
2374
2375 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)); }
2376
2377 void logical_and (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_and, left, right, dst)); }
2378 void logical_or (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_or, left, right, dst)); }
2379 void logical_xor (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_xor, left, right, dst)); }
2380
2381 void null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null = false);
2382 void throw_exception(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2383 append(new LIR_Op2(lir_throw, exceptionPC, exceptionOop, LIR_OprFact::illegalOpr, info));
2384 }
2385 void unwind_exception(LIR_Opr exceptionOop) {
2386 append(new LIR_Op1(lir_unwind, exceptionOop));
2387 }
2388
2389 void push(LIR_Opr opr) { append(new LIR_Op1(lir_push, opr)); }
2390 void pop(LIR_Opr reg) { append(new LIR_Op1(lir_pop, reg)); }
2391
2392 void cmp(LIR_Condition condition, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info = nullptr) {
2393 append(new LIR_Op2(lir_cmp, condition, left, right, info));
2394 }
2395 void cmp(LIR_Condition condition, LIR_Opr left, int right, CodeEmitInfo* info = nullptr) {
2396 cmp(condition, left, LIR_OprFact::intConst(right), info);
2397 }
2398
2399 void cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info);
2400 void cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info);
2401
2402 void cmove(LIR_Condition condition, LIR_Opr src1, LIR_Opr src2, LIR_Opr dst, BasicType type,
2403 LIR_Opr cmp_opr1 = LIR_OprFact::illegalOpr, LIR_Opr cmp_opr2 = LIR_OprFact::illegalOpr) {
2404 append(new LIR_Op4(lir_cmove, condition, src1, src2, cmp_opr1, cmp_opr2, dst, type));
2405 }
2406
2407 void cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2408 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2409 void cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2410 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2411 void cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2412 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2413
2414 void abs (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_abs , from, tmp, to)); }
2415 void negate(LIR_Opr from, LIR_Opr to, LIR_Opr tmp = LIR_OprFact::illegalOpr) { append(new LIR_Op2(lir_neg, from, tmp, to)); }
2416 void sqrt(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_sqrt, from, tmp, to)); }
2417 void fmad(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmad, from, from1, from2, to)); }
2418 void fmaf(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmaf, from, from1, from2, to)); }
2419 void log10 (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_log10, from, LIR_OprFact::illegalOpr, to, tmp)); }
2420 void tan (LIR_Opr from, LIR_Opr to, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_Op2(lir_tan , from, tmp1, to, tmp2)); }
2421 void f2hf(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_f2hf, from, tmp, to)); }
2422 void hf2f(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_hf2f, from, tmp, to)); }
2423
2424 void add (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_add, left, right, res)); }
2425 void sub (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_sub, left, right, res, info)); }
2426 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_mul, left, right, res)); }
2427 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_mul, left, right, res, tmp)); }
2428 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_div, left, right, res, info)); }
2429 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_div, left, right, res, tmp)); }
2430 void rem (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = nullptr) { append(new LIR_Op2(lir_rem, left, right, res, info)); }
2431
2432 void volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2433 void volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2434
2435 void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2436
2437 void store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2438 void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2439 void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = nullptr, LIR_PatchCode patch_code = lir_patch_none);
2440 void volatile_store_mem_reg(LIR_Opr src, LIR_Address* address, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2441 void volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2442
2443 void idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2444 void idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2445 void irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2446 void irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2447
2448 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);
2449 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);
2450
2451 // jump is an unconditional branch
2452 void jump(BlockBegin* block) {
2453 append(new LIR_OpBranch(lir_cond_always, block));
2454 }
2455 void jump(CodeStub* stub) {
2456 append(new LIR_OpBranch(lir_cond_always, stub));
2457 }
2458 void branch(LIR_Condition cond, Label* lbl) {
2459 append(new LIR_OpBranch(cond, lbl));
2460 }
2461 // Should not be used for fp comparisons
2462 void branch(LIR_Condition cond, BlockBegin* block) {
2463 append(new LIR_OpBranch(cond, block));
2464 }
2465 // Should not be used for fp comparisons
2466 void branch(LIR_Condition cond, CodeStub* stub) {
2467 append(new LIR_OpBranch(cond, stub));
2468 }
2469 // Should only be used for fp comparisons
2470 void branch(LIR_Condition cond, BlockBegin* block, BlockBegin* unordered) {
2471 append(new LIR_OpBranch(cond, block, unordered));
2472 }
2473
2474 void shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2475 void shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2476 void unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2477
2478 void shift_left(LIR_Opr value, int count, LIR_Opr dst) { shift_left(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2479 void shift_right(LIR_Opr value, int count, LIR_Opr dst) { shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2480 void unsigned_shift_right(LIR_Opr value, int count, LIR_Opr dst) { unsigned_shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2481
2482 void lcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_cmp_l2i, left, right, dst)); }
2483 void fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less);
2484
2485 void call_runtime_leaf(address routine, LIR_Opr tmp, LIR_Opr result, LIR_OprList* arguments) {
2486 append(new LIR_OpRTCall(routine, tmp, result, arguments));
2487 }
2488
2489 void call_runtime(address routine, LIR_Opr tmp, LIR_Opr result,
2490 LIR_OprList* arguments, CodeEmitInfo* info) {
2491 append(new LIR_OpRTCall(routine, tmp, result, arguments, info));
2492 }
2493
2494 void load_stack_address_monitor(int monitor_ix, LIR_Opr dst) { append(new LIR_Op1(lir_monaddr, LIR_OprFact::intConst(monitor_ix), dst)); }
2495 void unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub);
2496 void lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_ie_stub=nullptr);
2497
2498 void breakpoint() { append(new LIR_Op0(lir_breakpoint)); }
2499
2500 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)); }
2501
2502 void update_crc32(LIR_Opr crc, LIR_Opr val, LIR_Opr res) { append(new LIR_OpUpdateCRC32(crc, val, res)); }
2503
2504 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);
2505 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);
2506 void check_flat_array(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
2507 void check_null_free_array(LIR_Opr array, LIR_Opr tmp);
2508 void substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
2509 LIR_Opr tmp1, LIR_Opr tmp2,
2510 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
2511 CodeEmitInfo* info, CodeStub* stub);
2512
2513 void checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
2514 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
2515 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
2516 ciMethod* profiled_method, int profiled_bci, bool is_null_free);
2517 // MethodData* profiling
2518 void profile_call(ciMethod* method, int bci, ciMethod* callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* cha_klass) {
2519 append(new LIR_OpProfileCall(method, bci, callee, mdo, recv, t1, cha_klass));
2520 }
2521 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) {
2522 append(new LIR_OpProfileType(LIR_OprFact::address(mdp), obj, exact_klass, current_klass, tmp, not_null, no_conflict));
2523 }
2524 void profile_inline_type(LIR_Address* mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null) {
2525 append(new LIR_OpProfileInlineType(LIR_OprFact::address(mdp), obj, flag, tmp, not_null));
2526 }
2527
2528 void xadd(LIR_Opr src, LIR_Opr add, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xadd, src, add, res, tmp)); }
2529 void xchg(LIR_Opr src, LIR_Opr set, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xchg, src, set, res, tmp)); }
2530
2531 void load_klass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info) { append(new LIR_OpLoadKlass(obj, result, info)); }
2532
2533 #ifdef ASSERT
2534 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)); }
2535 #endif
2536 };
2537
2538 void print_LIR(BlockList* blocks);
2539
2540 class LIR_InsertionBuffer : public CompilationResourceObj {
2541 private:
2542 LIR_List* _lir; // the lir list where ops of this buffer should be inserted later (null when uninitialized)
2543
2544 // list of insertion points. index and count are stored alternately:
2545 // _index_and_count[i * 2]: the index into lir list where "count" ops should be inserted
2546 // _index_and_count[i * 2 + 1]: the number of ops to be inserted at index
2547 intStack _index_and_count;
2548
2549 // the LIR_Ops to be inserted
2550 LIR_OpList _ops;
2551
2552 void append_new(int index, int count) { _index_and_count.append(index); _index_and_count.append(count); }
2553 void set_index_at(int i, int value) { _index_and_count.at_put((i << 1), value); }
2554 void set_count_at(int i, int value) { _index_and_count.at_put((i << 1) + 1, value); }
2555
2556 #ifdef ASSERT
2557 void verify();
2558 #endif
2559 public:
2560 LIR_InsertionBuffer() : _lir(nullptr), _index_and_count(8), _ops(8) { }
2561
2562 // must be called before using the insertion buffer
2563 void init(LIR_List* lir) { assert(!initialized(), "already initialized"); _lir = lir; _index_and_count.clear(); _ops.clear(); }
2564 bool initialized() const { return _lir != nullptr; }
2565 // called automatically when the buffer is appended to the LIR_List
2566 void finish() { _lir = nullptr; }
2567
2568 // accessors
2569 LIR_List* lir_list() const { return _lir; }
2570 int number_of_insertion_points() const { return _index_and_count.length() >> 1; }
2571 int index_at(int i) const { return _index_and_count.at((i << 1)); }
2572 int count_at(int i) const { return _index_and_count.at((i << 1) + 1); }
2573
2574 int number_of_ops() const { return _ops.length(); }
2575 LIR_Op* op_at(int i) const { return _ops.at(i); }
2576
2577 // append an instruction to the buffer
2578 void append(int index, LIR_Op* op);
2579
2580 // instruction
2581 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)); }
2582 };
2583
2584
2585 //
2586 // LIR_OpVisitState is used for manipulating LIR_Ops in an abstract way.
2587 // Calling a LIR_Op's visit function with a LIR_OpVisitState causes
2588 // information about the input, output and temporaries used by the
2589 // op to be recorded. It also records whether the op has call semantics
2590 // and also records all the CodeEmitInfos used by this op.
2591 //
2592
2593
2594 class LIR_OpVisitState: public StackObj {
2595 public:
2596 typedef enum { inputMode, firstMode = inputMode, tempMode, outputMode, numModes, invalidMode = -1 } OprMode;
2597
2598 enum {
2599 maxNumberOfOperands = 21,
2600 maxNumberOfInfos = 4
2601 };
2602
2603 private:
2604 LIR_Op* _op;
2605
2606 // optimization: the operands and infos are not stored in a variable-length
2607 // list, but in a fixed-size array to save time of size checks and resizing
2608 int _oprs_len[numModes];
2609 LIR_Opr* _oprs_new[numModes][maxNumberOfOperands];
2610 int _info_len;
2611 CodeEmitInfo* _info_new[maxNumberOfInfos];
2612
2613 bool _has_call;
2614 bool _has_slow_case;
2615
2616
2617 // only include register operands
2618 // addresses are decomposed to the base and index registers
2619 // constants and stack operands are ignored
2620 void append(LIR_Opr& opr, OprMode mode) {
2621 assert(opr->is_valid(), "should not call this otherwise");
2622 assert(mode >= 0 && mode < numModes, "bad mode");
2623
2624 if (opr->is_register()) {
2625 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2626 _oprs_new[mode][_oprs_len[mode]++] = &opr;
2627
2628 } else if (opr->is_pointer()) {
2629 LIR_Address* address = opr->as_address_ptr();
2630 if (address != nullptr) {
2631 // special handling for addresses: add base and index register of the address
2632 // both are always input operands or temp if we want to extend
2633 // their liveness!
2634 if (mode == outputMode) {
2635 mode = inputMode;
2636 }
2637 assert (mode == inputMode || mode == tempMode, "input or temp only for addresses");
2638 if (address->_base->is_valid()) {
2639 assert(address->_base->is_register(), "must be");
2640 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2641 _oprs_new[mode][_oprs_len[mode]++] = &address->_base;
2642 }
2643 if (address->_index->is_valid()) {
2644 assert(address->_index->is_register(), "must be");
2645 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2646 _oprs_new[mode][_oprs_len[mode]++] = &address->_index;
2647 }
2648
2649 } else {
2650 assert(opr->is_constant(), "constant operands are not processed");
2651 }
2652 } else {
2653 assert(opr->is_stack(), "stack operands are not processed");
2654 }
2655 }
2656
2657 void append(CodeEmitInfo* info) {
2658 assert(info != nullptr, "should not call this otherwise");
2659 assert(_info_len < maxNumberOfInfos, "array overflow");
2660 _info_new[_info_len++] = info;
2661 }
2662
2663 public:
2664 LIR_OpVisitState() { reset(); }
2665
2666 LIR_Op* op() const { return _op; }
2667 void set_op(LIR_Op* op) { reset(); _op = op; }
2668
2669 bool has_call() const { return _has_call; }
2670 bool has_slow_case() const { return _has_slow_case; }
2671
2672 void reset() {
2673 _op = nullptr;
2674 _has_call = false;
2675 _has_slow_case = false;
2676
2677 _oprs_len[inputMode] = 0;
2678 _oprs_len[tempMode] = 0;
2679 _oprs_len[outputMode] = 0;
2680 _info_len = 0;
2681 }
2682
2683
2684 int opr_count(OprMode mode) const {
2685 assert(mode >= 0 && mode < numModes, "bad mode");
2686 return _oprs_len[mode];
2687 }
2688
2689 LIR_Opr opr_at(OprMode mode, int index) const {
2690 assert(mode >= 0 && mode < numModes, "bad mode");
2691 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2692 return *_oprs_new[mode][index];
2693 }
2694
2695 void set_opr_at(OprMode mode, int index, LIR_Opr opr) const {
2696 assert(mode >= 0 && mode < numModes, "bad mode");
2697 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2698 *_oprs_new[mode][index] = opr;
2699 }
2700
2701 int info_count() const {
2702 return _info_len;
2703 }
2704
2705 CodeEmitInfo* info_at(int index) const {
2706 assert(index < _info_len, "index out of bounds");
2707 return _info_new[index];
2708 }
2709
2710 XHandlers* all_xhandler();
2711
2712 // collects all register operands of the instruction
2713 void visit(LIR_Op* op);
2714
2715 #ifdef ASSERT
2716 // check that an operation has no operands
2717 bool no_operands(LIR_Op* op);
2718 #endif
2719
2720 // LIR_Op visitor functions use these to fill in the state
2721 void do_input(LIR_Opr& opr) { append(opr, LIR_OpVisitState::inputMode); }
2722 void do_output(LIR_Opr& opr) { append(opr, LIR_OpVisitState::outputMode); }
2723 void do_temp(LIR_Opr& opr) { append(opr, LIR_OpVisitState::tempMode); }
2724 void do_info(CodeEmitInfo* info) { append(info); }
2725
2726 void do_stub(CodeStub* stub);
2727 void do_call() { _has_call = true; }
2728 void do_slow_case() { _has_slow_case = true; }
2729 void do_slow_case(CodeEmitInfo* info) {
2730 _has_slow_case = true;
2731 append(info);
2732 }
2733 };
2734
2735
2736 inline LIR_Opr LIR_Opr::illegalOpr() { return LIR_OprFact::illegalOpr; };
2737
2738 inline LIR_Opr LIR_Opr::nullOpr() { return LIR_OprFact::nullOpr; };
2739
2740 #endif // SHARE_C1_C1_LIR_HPP