1 /*
2 * Copyright (c) 2000, 2022, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_C1_C1_LIR_HPP
26 #define SHARE_C1_C1_LIR_HPP
27
28 #include "c1/c1_Defs.hpp"
29 #include "c1/c1_ValueType.hpp"
30 #include "oops/method.hpp"
31 #include "utilities/globalDefinitions.hpp"
32
33 class BlockBegin;
34 class BlockList;
35 class LIR_Assembler;
36 class CodeEmitInfo;
37 class CodeStub;
38 class CodeStubList;
39 class C1SafepointPollStub;
40 class ArrayCopyStub;
41 class LIR_Op;
42 class ciType;
43 class ValueType;
44 class LIR_OpVisitState;
45 class FpuStackSim;
46
47 //---------------------------------------------------------------------
48 // LIR Operands
49 // LIR_OprPtr
50 // LIR_Const
51 // LIR_Address
52 //---------------------------------------------------------------------
53 class LIR_OprPtr;
54 class LIR_Const;
55 class LIR_Address;
56 class LIR_OprVisitor;
57 class LIR_Opr;
58
59 typedef int RegNr;
60
61 typedef GrowableArray<LIR_Opr> LIR_OprList;
62 typedef GrowableArray<LIR_Op*> LIR_OpArray;
63 typedef GrowableArray<LIR_Op*> LIR_OpList;
64
65 // define LIR_OprPtr early so LIR_Opr can refer to it
66 class LIR_OprPtr: public CompilationResourceObj {
67 public:
68 bool is_oop_pointer() const { return (type() == T_OBJECT); }
69 bool is_float_kind() const { BasicType t = type(); return (t == T_FLOAT) || (t == T_DOUBLE); }
70
71 virtual LIR_Const* as_constant() { return NULL; }
72 virtual LIR_Address* as_address() { return NULL; }
73 virtual BasicType type() const = 0;
74 virtual void print_value_on(outputStream* out) const = 0;
75 };
76
77
78
79 // LIR constants
80 class LIR_Const: public LIR_OprPtr {
81 private:
82 JavaValue _value;
83
84 void type_check(BasicType t) const { assert(type() == t, "type check"); }
85 void type_check(BasicType t1, BasicType t2) const { assert(type() == t1 || type() == t2, "type check"); }
86 void type_check(BasicType t1, BasicType t2, BasicType t3) const { assert(type() == t1 || type() == t2 || type() == t3, "type check"); }
87
88 public:
89 LIR_Const(jint i, bool is_address=false) { _value.set_type(is_address?T_ADDRESS:T_INT); _value.set_jint(i); }
90 LIR_Const(jlong l) { _value.set_type(T_LONG); _value.set_jlong(l); }
91 LIR_Const(jfloat f) { _value.set_type(T_FLOAT); _value.set_jfloat(f); }
92 LIR_Const(jdouble d) { _value.set_type(T_DOUBLE); _value.set_jdouble(d); }
93 LIR_Const(jobject o) { _value.set_type(T_OBJECT); _value.set_jobject(o); }
94 LIR_Const(void* p) {
95 #ifdef _LP64
96 assert(sizeof(jlong) >= sizeof(p), "too small");;
97 _value.set_type(T_LONG); _value.set_jlong((jlong)p);
98 #else
99 assert(sizeof(jint) >= sizeof(p), "too small");;
100 _value.set_type(T_INT); _value.set_jint((jint)p);
101 #endif
102 }
103 LIR_Const(Metadata* m) {
104 _value.set_type(T_METADATA);
105 #ifdef _LP64
106 _value.set_jlong((jlong)m);
107 #else
108 _value.set_jint((jint)m);
109 #endif // _LP64
110 }
111
112 virtual BasicType type() const { return _value.get_type(); }
113 virtual LIR_Const* as_constant() { return this; }
114
115 jint as_jint() const { type_check(T_INT, T_ADDRESS); return _value.get_jint(); }
116 jlong as_jlong() const { type_check(T_LONG ); return _value.get_jlong(); }
117 jfloat as_jfloat() const { type_check(T_FLOAT ); return _value.get_jfloat(); }
118 jdouble as_jdouble() const { type_check(T_DOUBLE); return _value.get_jdouble(); }
119 jobject as_jobject() const { type_check(T_OBJECT); return _value.get_jobject(); }
120 jint as_jint_lo() const { type_check(T_LONG ); return low(_value.get_jlong()); }
121 jint as_jint_hi() const { type_check(T_LONG ); return high(_value.get_jlong()); }
122
123 #ifdef _LP64
124 address as_pointer() const { type_check(T_LONG ); return (address)_value.get_jlong(); }
125 Metadata* as_metadata() const { type_check(T_METADATA); return (Metadata*)_value.get_jlong(); }
126 #else
127 address as_pointer() const { type_check(T_INT ); return (address)_value.get_jint(); }
128 Metadata* as_metadata() const { type_check(T_METADATA); return (Metadata*)_value.get_jint(); }
129 #endif
130
131
132 jint as_jint_bits() const { type_check(T_FLOAT, T_INT, T_ADDRESS); return _value.get_jint(); }
133 jint as_jint_lo_bits() const {
134 if (type() == T_DOUBLE) {
135 return low(jlong_cast(_value.get_jdouble()));
136 } else {
137 return as_jint_lo();
138 }
139 }
140 jint as_jint_hi_bits() const {
141 if (type() == T_DOUBLE) {
142 return high(jlong_cast(_value.get_jdouble()));
143 } else {
144 return as_jint_hi();
145 }
146 }
147 jlong as_jlong_bits() const {
148 if (type() == T_DOUBLE) {
149 return jlong_cast(_value.get_jdouble());
150 } else {
151 return as_jlong();
152 }
153 }
154
155 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
156
157
158 bool is_zero_float() {
159 jfloat f = as_jfloat();
160 jfloat ok = 0.0f;
161 return jint_cast(f) == jint_cast(ok);
162 }
163
164 bool is_one_float() {
165 jfloat f = as_jfloat();
166 return !g_isnan(f) && g_isfinite(f) && f == 1.0;
167 }
168
169 bool is_zero_double() {
170 jdouble d = as_jdouble();
171 jdouble ok = 0.0;
172 return jlong_cast(d) == jlong_cast(ok);
173 }
174
175 bool is_one_double() {
176 jdouble d = as_jdouble();
177 return !g_isnan(d) && g_isfinite(d) && d == 1.0;
178 }
179 };
180
181
182 //---------------------LIR Operand descriptor------------------------------------
183 //
184 // The class LIR_Opr represents a LIR instruction operand;
185 // it can be a register (ALU/FPU), stack location or a constant;
186 // Constants and addresses are represented as resource area allocated
187 // structures (see above), and pointers are stored in the _value field (cast to
188 // an intptr_t).
189 // Registers and stack locations are represented inline as integers.
190 // (see value function).
191
192 // Previously, this class was derived from CompilationResourceObj.
193 // However, deriving from any of the "Obj" types in allocation.hpp seems
194 // detrimental, since in some build modes it would add a vtable to this class,
195 // which make it no longer be a 1-word trivially-copyable wrapper object,
196 // which is the entire point of it.
197
198 class LIR_Opr {
199 public:
200 // value structure:
201 // data other-non-data opr-type opr-kind
202 // +-------------------+--------------+-------+-----+
203 // [max...............................|6 5 4 3|2 1 0]
204 // ^
205 // is_pointer bit
206 //
207 // lowest bit cleared, means it is a structure pointer
208 // we need 4 bits to represent types
209
210 private:
211 friend class LIR_OprFact;
212
213 intptr_t _value;
214 // Conversion
215 intptr_t value() const { return _value; }
216
217 bool check_value_mask(intptr_t mask, intptr_t masked_value) const {
218 return (value() & mask) == masked_value;
219 }
220
221 enum OprKind {
222 pointer_value = 0
223 , stack_value = 1
224 , cpu_register = 3
225 , fpu_register = 5
226 , illegal_value = 7
227 };
228
229 enum OprBits {
230 pointer_bits = 1
231 , kind_bits = 3
232 , type_bits = 4
233 , size_bits = 2
234 , destroys_bits = 1
235 , virtual_bits = 1
236 , is_xmm_bits = 1
237 , last_use_bits = 1
238 , is_fpu_stack_offset_bits = 1 // used in assertion checking on x86 for FPU stack slot allocation
239 , non_data_bits = kind_bits + type_bits + size_bits + destroys_bits + virtual_bits
240 + is_xmm_bits + last_use_bits + is_fpu_stack_offset_bits
241 , data_bits = BitsPerInt - non_data_bits
242 , reg_bits = data_bits / 2 // for two registers in one value encoding
243 };
244
245 enum OprShift : uintptr_t {
246 kind_shift = 0
247 , type_shift = kind_shift + kind_bits
248 , size_shift = type_shift + type_bits
249 , destroys_shift = size_shift + size_bits
250 , last_use_shift = destroys_shift + destroys_bits
251 , is_fpu_stack_offset_shift = last_use_shift + last_use_bits
252 , virtual_shift = is_fpu_stack_offset_shift + is_fpu_stack_offset_bits
253 , is_xmm_shift = virtual_shift + virtual_bits
254 , data_shift = is_xmm_shift + is_xmm_bits
255 , reg1_shift = data_shift
256 , reg2_shift = data_shift + reg_bits
257
258 };
259
260 enum OprSize {
261 single_size = 0 << size_shift
262 , double_size = 1 << size_shift
263 };
264
265 enum OprMask {
266 kind_mask = right_n_bits(kind_bits)
267 , type_mask = right_n_bits(type_bits) << type_shift
268 , size_mask = right_n_bits(size_bits) << size_shift
269 , last_use_mask = right_n_bits(last_use_bits) << last_use_shift
270 , is_fpu_stack_offset_mask = right_n_bits(is_fpu_stack_offset_bits) << is_fpu_stack_offset_shift
271 , virtual_mask = right_n_bits(virtual_bits) << virtual_shift
272 , is_xmm_mask = right_n_bits(is_xmm_bits) << is_xmm_shift
273 , pointer_mask = right_n_bits(pointer_bits)
274 , lower_reg_mask = right_n_bits(reg_bits)
275 , no_type_mask = (int)(~(type_mask | last_use_mask | is_fpu_stack_offset_mask))
276 };
277
278 uint32_t data() const { return (uint32_t)value() >> data_shift; }
279 int lo_reg_half() const { return data() & lower_reg_mask; }
280 int hi_reg_half() const { return (data() >> reg_bits) & lower_reg_mask; }
281 OprKind kind_field() const { return (OprKind)(value() & kind_mask); }
282 OprSize size_field() const { return (OprSize)(value() & size_mask); }
283
284 static char type_char(BasicType t);
285
286 public:
287 LIR_Opr() : _value(0) {}
288 LIR_Opr(intptr_t val) : _value(val) {}
289 LIR_Opr(LIR_OprPtr *val) : _value(reinterpret_cast<intptr_t>(val)) {}
290 bool operator==(const LIR_Opr &other) const { return _value == other._value; }
291 bool operator!=(const LIR_Opr &other) const { return _value != other._value; }
292 explicit operator bool() const { return _value != 0; }
293
294 // UGLY HACK: make this value object look like a pointer (to itself). This
295 // operator overload should be removed, and all callers updated from
296 // `opr->fn()` to `opr.fn()`.
297 const LIR_Opr* operator->() const { return this; }
298 LIR_Opr* operator->() { return this; }
299
300 enum {
301 vreg_base = ConcreteRegisterImpl::number_of_registers,
302 data_max = (1 << data_bits) - 1, // max unsigned value for data bit field
303 vreg_limit = 10000, // choose a reasonable limit,
304 vreg_max = MIN2(vreg_limit, data_max) // and make sure if fits in the bit field
305 };
306
307 static inline LIR_Opr illegalOpr();
308 static inline LIR_Opr nullOpr();
309
310 enum OprType {
311 unknown_type = 0 << type_shift // means: not set (catch uninitialized types)
312 , int_type = 1 << type_shift
313 , long_type = 2 << type_shift
314 , object_type = 3 << type_shift
315 , address_type = 4 << type_shift
316 , float_type = 5 << type_shift
317 , double_type = 6 << type_shift
318 , metadata_type = 7 << type_shift
319 };
320 friend OprType as_OprType(BasicType t);
321 friend BasicType as_BasicType(OprType t);
322
323 OprType type_field_valid() const { assert(is_register() || is_stack(), "should not be called otherwise"); return (OprType)(value() & type_mask); }
324 OprType type_field() const { return is_illegal() ? unknown_type : (OprType)(value() & type_mask); }
325
326 static OprSize size_for(BasicType t) {
327 switch (t) {
328 case T_LONG:
329 case T_DOUBLE:
330 return double_size;
331 break;
332
333 case T_FLOAT:
334 case T_BOOLEAN:
335 case T_CHAR:
336 case T_BYTE:
337 case T_SHORT:
338 case T_INT:
339 case T_ADDRESS:
340 case T_OBJECT:
341 case T_PRIMITIVE_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() != NULL; }
389 bool is_address() const { return is_pointer() && pointer()->as_address() != NULL; }
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_PRIMITIVE_OBJECT:
492 case T_ARRAY: return LIR_Opr::object_type;
493 case T_ADDRESS: return LIR_Opr::address_type;
494 case T_METADATA: return LIR_Opr::metadata_type;
495 case T_ILLEGAL: // fall through
496 default: ShouldNotReachHere(); return LIR_Opr::unknown_type;
497 }
498 }
499
500 inline BasicType as_BasicType(LIR_Opr::OprType t) {
501 switch (t) {
502 case LIR_Opr::int_type: return T_INT;
503 case LIR_Opr::long_type: return T_LONG;
504 case LIR_Opr::float_type: return T_FLOAT;
505 case LIR_Opr::double_type: return T_DOUBLE;
506 case LIR_Opr::object_type: return T_OBJECT;
507 case LIR_Opr::address_type: return T_ADDRESS;
508 case LIR_Opr::metadata_type:return T_METADATA;
509 case LIR_Opr::unknown_type: // fall through
510 default: ShouldNotReachHere(); return T_ILLEGAL;
511 }
512 }
513
514
515 // LIR_Address
516 class LIR_Address: public LIR_OprPtr {
517 friend class LIR_OpVisitState;
518
519 public:
520 // NOTE: currently these must be the log2 of the scale factor (and
521 // must also be equivalent to the ScaleFactor enum in
522 // assembler_i486.hpp)
523 enum Scale {
524 times_1 = 0,
525 times_2 = 1,
526 times_4 = 2,
527 times_8 = 3
528 };
529
530 private:
531 LIR_Opr _base;
532 LIR_Opr _index;
533 Scale _scale;
534 intx _disp;
535 BasicType _type;
536
537 public:
538 LIR_Address(LIR_Opr base, LIR_Opr index, BasicType type):
539 _base(base)
540 , _index(index)
541 , _scale(times_1)
542 , _disp(0)
543 , _type(type) { verify(); }
544
545 LIR_Address(LIR_Opr base, intx disp, BasicType type):
546 _base(base)
547 , _index(LIR_Opr::illegalOpr())
548 , _scale(times_1)
549 , _disp(disp)
550 , _type(type) { verify(); }
551
552 LIR_Address(LIR_Opr base, BasicType type):
553 _base(base)
554 , _index(LIR_Opr::illegalOpr())
555 , _scale(times_1)
556 , _disp(0)
557 , _type(type) { verify(); }
558
559 LIR_Address(LIR_Opr base, LIR_Opr index, intx disp, BasicType type):
560 _base(base)
561 , _index(index)
562 , _scale(times_1)
563 , _disp(disp)
564 , _type(type) { verify(); }
565
566 LIR_Address(LIR_Opr base, LIR_Opr index, Scale scale, intx disp, BasicType type):
567 _base(base)
568 , _index(index)
569 , _scale(scale)
570 , _disp(disp)
571 , _type(type) { verify(); }
572
573 LIR_Opr base() const { return _base; }
574 LIR_Opr index() const { return _index; }
575 Scale scale() const { return _scale; }
576 intx disp() const { return _disp; }
577
578 bool equals(LIR_Address* other) const { return base() == other->base() && index() == other->index() && disp() == other->disp() && scale() == other->scale(); }
579
580 virtual LIR_Address* as_address() { return this; }
581 virtual BasicType type() const { return _type; }
582 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
583
584 void verify() const PRODUCT_RETURN;
585
586 static Scale scale(BasicType type);
587 };
588
589
590 // operand factory
591 class LIR_OprFact: public AllStatic {
592 public:
593
594 static LIR_Opr illegalOpr;
595 static LIR_Opr nullOpr;
596
597 static LIR_Opr single_cpu(int reg) {
598 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
599 LIR_Opr::int_type |
600 LIR_Opr::cpu_register |
601 LIR_Opr::single_size);
602 }
603 static LIR_Opr single_cpu_oop(int reg) {
604 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
605 LIR_Opr::object_type |
606 LIR_Opr::cpu_register |
607 LIR_Opr::single_size);
608 }
609 static LIR_Opr single_cpu_address(int reg) {
610 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
611 LIR_Opr::address_type |
612 LIR_Opr::cpu_register |
613 LIR_Opr::single_size);
614 }
615 static LIR_Opr single_cpu_metadata(int reg) {
616 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
617 LIR_Opr::metadata_type |
618 LIR_Opr::cpu_register |
619 LIR_Opr::single_size);
620 }
621 static LIR_Opr double_cpu(int reg1, int reg2) {
622 LP64_ONLY(assert(reg1 == reg2, "must be identical"));
623 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) |
624 (reg2 << LIR_Opr::reg2_shift) |
625 LIR_Opr::long_type |
626 LIR_Opr::cpu_register |
627 LIR_Opr::double_size);
628 }
629
630 static LIR_Opr single_fpu(int reg) {
631 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
632 LIR_Opr::float_type |
633 LIR_Opr::fpu_register |
634 LIR_Opr::single_size);
635 }
636
637 // Platform dependent.
638 static LIR_Opr double_fpu(int reg1, int reg2 = -1 /*fnoreg*/);
639
640 #ifdef ARM32
641 static LIR_Opr single_softfp(int reg) {
642 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
643 LIR_Opr::float_type |
644 LIR_Opr::cpu_register |
645 LIR_Opr::single_size);
646 }
647 static LIR_Opr double_softfp(int reg1, int reg2) {
648 return (LIR_Opr)(intptr_t)((reg1 << LIR_Opr::reg1_shift) |
649 (reg2 << LIR_Opr::reg2_shift) |
650 LIR_Opr::double_type |
651 LIR_Opr::cpu_register |
652 LIR_Opr::double_size);
653 }
654 #endif // ARM32
655
656 #if defined(X86)
657 static LIR_Opr single_xmm(int reg) {
658 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
659 LIR_Opr::float_type |
660 LIR_Opr::fpu_register |
661 LIR_Opr::single_size |
662 LIR_Opr::is_xmm_mask);
663 }
664 static LIR_Opr double_xmm(int reg) {
665 return (LIR_Opr)(intptr_t)((reg << LIR_Opr::reg1_shift) |
666 (reg << LIR_Opr::reg2_shift) |
667 LIR_Opr::double_type |
668 LIR_Opr::fpu_register |
669 LIR_Opr::double_size |
670 LIR_Opr::is_xmm_mask);
671 }
672 #endif // X86
673
674 static LIR_Opr virtual_register(int index, BasicType type) {
675 if (index > LIR_Opr::vreg_max) {
676 // Running out of virtual registers. Caller should bailout.
677 return illegalOpr;
678 }
679
680 LIR_Opr res;
681 switch (type) {
682 case T_OBJECT: // fall through
683 case T_PRIMITIVE_OBJECT: // fall through
684 case T_ARRAY:
685 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
686 LIR_Opr::object_type |
687 LIR_Opr::cpu_register |
688 LIR_Opr::single_size |
689 LIR_Opr::virtual_mask);
690 break;
691
692 case T_METADATA:
693 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
694 LIR_Opr::metadata_type|
695 LIR_Opr::cpu_register |
696 LIR_Opr::single_size |
697 LIR_Opr::virtual_mask);
698 break;
699
700 case T_INT:
701 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
702 LIR_Opr::int_type |
703 LIR_Opr::cpu_register |
704 LIR_Opr::single_size |
705 LIR_Opr::virtual_mask);
706 break;
707
708 case T_ADDRESS:
709 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
710 LIR_Opr::address_type |
711 LIR_Opr::cpu_register |
712 LIR_Opr::single_size |
713 LIR_Opr::virtual_mask);
714 break;
715
716 case T_LONG:
717 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
718 LIR_Opr::long_type |
719 LIR_Opr::cpu_register |
720 LIR_Opr::double_size |
721 LIR_Opr::virtual_mask);
722 break;
723
724 #ifdef __SOFTFP__
725 case T_FLOAT:
726 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
727 LIR_Opr::float_type |
728 LIR_Opr::cpu_register |
729 LIR_Opr::single_size |
730 LIR_Opr::virtual_mask);
731 break;
732 case T_DOUBLE:
733 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
734 LIR_Opr::double_type |
735 LIR_Opr::cpu_register |
736 LIR_Opr::double_size |
737 LIR_Opr::virtual_mask);
738 break;
739 #else // __SOFTFP__
740 case T_FLOAT:
741 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
742 LIR_Opr::float_type |
743 LIR_Opr::fpu_register |
744 LIR_Opr::single_size |
745 LIR_Opr::virtual_mask);
746 break;
747
748 case
749 T_DOUBLE: res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
750 LIR_Opr::double_type |
751 LIR_Opr::fpu_register |
752 LIR_Opr::double_size |
753 LIR_Opr::virtual_mask);
754 break;
755 #endif // __SOFTFP__
756 default: ShouldNotReachHere(); res = illegalOpr;
757 }
758
759 #ifdef ASSERT
760 res->validate_type();
761 assert(res->vreg_number() == index, "conversion check");
762 assert(index >= LIR_Opr::vreg_base, "must start at vreg_base");
763
764 // old-style calculation; check if old and new method are equal
765 LIR_Opr::OprType t = as_OprType(type);
766 #ifdef __SOFTFP__
767 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
768 t |
769 LIR_Opr::cpu_register |
770 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask);
771 #else // __SOFTFP__
772 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) | t |
773 ((type == T_FLOAT || type == T_DOUBLE) ? LIR_Opr::fpu_register : LIR_Opr::cpu_register) |
774 LIR_Opr::size_for(type) | LIR_Opr::virtual_mask);
775 assert(res == old_res, "old and new method not equal");
776 #endif // __SOFTFP__
777 #endif // ASSERT
778
779 return res;
780 }
781
782 // 'index' is computed by FrameMap::local_stack_pos(index); do not use other parameters as
783 // the index is platform independent; a double stack using indices 2 and 3 has always
784 // index 2.
785 static LIR_Opr stack(int index, BasicType type) {
786 LIR_Opr res;
787 switch (type) {
788 case T_PRIMITIVE_OBJECT: // fall through
789 case T_OBJECT: // fall through
790 case T_ARRAY:
791 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
792 LIR_Opr::object_type |
793 LIR_Opr::stack_value |
794 LIR_Opr::single_size);
795 break;
796
797 case T_METADATA:
798 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
799 LIR_Opr::metadata_type |
800 LIR_Opr::stack_value |
801 LIR_Opr::single_size);
802 break;
803 case T_INT:
804 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
805 LIR_Opr::int_type |
806 LIR_Opr::stack_value |
807 LIR_Opr::single_size);
808 break;
809
810 case T_ADDRESS:
811 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
812 LIR_Opr::address_type |
813 LIR_Opr::stack_value |
814 LIR_Opr::single_size);
815 break;
816
817 case T_LONG:
818 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
819 LIR_Opr::long_type |
820 LIR_Opr::stack_value |
821 LIR_Opr::double_size);
822 break;
823
824 case T_FLOAT:
825 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
826 LIR_Opr::float_type |
827 LIR_Opr::stack_value |
828 LIR_Opr::single_size);
829 break;
830 case T_DOUBLE:
831 res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
832 LIR_Opr::double_type |
833 LIR_Opr::stack_value |
834 LIR_Opr::double_size);
835 break;
836
837 default: ShouldNotReachHere(); res = illegalOpr;
838 }
839
840 #ifdef ASSERT
841 assert(index >= 0, "index must be positive");
842 assert(index == (int)res->data(), "conversion check");
843
844 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_Opr::data_shift) |
845 LIR_Opr::stack_value |
846 as_OprType(type) |
847 LIR_Opr::size_for(type));
848 assert(res == old_res, "old and new method not equal");
849 #endif
850
851 return res;
852 }
853
854 static LIR_Opr intConst(jint i) { return (LIR_Opr)(new LIR_Const(i)); }
855 static LIR_Opr longConst(jlong l) { return (LIR_Opr)(new LIR_Const(l)); }
856 static LIR_Opr floatConst(jfloat f) { return (LIR_Opr)(new LIR_Const(f)); }
857 static LIR_Opr doubleConst(jdouble d) { return (LIR_Opr)(new LIR_Const(d)); }
858 static LIR_Opr oopConst(jobject o) { return (LIR_Opr)(new LIR_Const(o)); }
859 static LIR_Opr address(LIR_Address* a) { return (LIR_Opr)a; }
860 static LIR_Opr intptrConst(void* p) { return (LIR_Opr)(new LIR_Const(p)); }
861 static LIR_Opr intptrConst(intptr_t v) { return (LIR_Opr)(new LIR_Const((void*)v)); }
862 static LIR_Opr illegal() { return (LIR_Opr)-1; }
863 static LIR_Opr addressConst(jint i) { return (LIR_Opr)(new LIR_Const(i, true)); }
864 static LIR_Opr metadataConst(Metadata* m) { return (LIR_Opr)(new LIR_Const(m)); }
865
866 static LIR_Opr value_type(ValueType* type);
867 };
868
869
870 //-------------------------------------------------------------------------------
871 // LIR Instructions
872 //-------------------------------------------------------------------------------
873 //
874 // Note:
875 // - every instruction has a result operand
876 // - every instruction has an CodeEmitInfo operand (can be revisited later)
877 // - every instruction has a LIR_OpCode operand
878 // - LIR_OpN, means an instruction that has N input operands
879 //
880 // class hierarchy:
881 //
882 class LIR_Op;
883 class LIR_Op0;
884 class LIR_OpLabel;
885 class LIR_Op1;
886 class LIR_OpBranch;
887 class LIR_OpConvert;
888 class LIR_OpAllocObj;
889 class LIR_OpReturn;
890 class LIR_OpRoundFP;
891 class LIR_Op2;
892 class LIR_OpDelay;
893 class LIR_Op3;
894 class LIR_OpAllocArray;
895 class LIR_Op4;
896 class LIR_OpCall;
897 class LIR_OpJavaCall;
898 class LIR_OpRTCall;
899 class LIR_OpArrayCopy;
900 class LIR_OpUpdateCRC32;
901 class LIR_OpLock;
902 class LIR_OpTypeCheck;
903 class LIR_OpFlattenedArrayCheck;
904 class LIR_OpNullFreeArrayCheck;
905 class LIR_OpSubstitutabilityCheck;
906 class LIR_OpCompareAndSwap;
907 class LIR_OpLoadKlass;
908 class LIR_OpProfileCall;
909 class LIR_OpProfileType;
910 class LIR_OpProfileInlineType;
911 #ifdef ASSERT
912 class LIR_OpAssert;
913 #endif
914
915 // LIR operation codes
916 enum LIR_Code {
917 lir_none
918 , begin_op0
919 , lir_label
920 , lir_nop
921 , lir_std_entry
922 , lir_osr_entry
923 , lir_fpop_raw
924 , lir_breakpoint
925 , lir_rtcall
926 , lir_membar
927 , lir_membar_acquire
928 , lir_membar_release
929 , lir_membar_loadload
930 , lir_membar_storestore
931 , lir_membar_loadstore
932 , lir_membar_storeload
933 , lir_get_thread
934 , lir_on_spin_wait
935 , lir_check_orig_pc
936 , end_op0
937 , begin_op1
938 , lir_fxch
939 , lir_fld
940 , lir_push
941 , lir_pop
942 , lir_null_check
943 , lir_return
944 , lir_leal
945 , lir_move
946 , lir_convert
947 , lir_alloc_object
948 , lir_monaddr
949 , lir_roundfp
950 , lir_safepoint
951 , lir_unwind
952 , lir_load_klass
953 , end_op1
954 , begin_op2
955 , lir_branch
956 , lir_cond_float_branch
957 , lir_cmp
958 , lir_cmp_l2i
959 , lir_ucmp_fd2i
960 , lir_cmp_fd2i
961 , lir_add
962 , lir_sub
963 , lir_mul
964 , lir_div
965 , lir_rem
966 , lir_sqrt
967 , lir_abs
968 , lir_neg
969 , lir_tan
970 , lir_log10
971 , lir_logic_and
972 , lir_logic_or
973 , lir_logic_xor
974 , lir_shl
975 , lir_shr
976 , lir_ushr
977 , lir_alloc_array
978 , lir_throw
979 , lir_xadd
980 , lir_xchg
981 , end_op2
982 , begin_op3
983 , lir_idiv
984 , lir_irem
985 , lir_fmad
986 , lir_fmaf
987 , end_op3
988 , begin_op4
989 , lir_cmove
990 , end_op4
991 , begin_opJavaCall
992 , lir_static_call
993 , lir_optvirtual_call
994 , lir_icvirtual_call
995 , lir_dynamic_call
996 , end_opJavaCall
997 , begin_opArrayCopy
998 , lir_arraycopy
999 , end_opArrayCopy
1000 , begin_opUpdateCRC32
1001 , lir_updatecrc32
1002 , end_opUpdateCRC32
1003 , begin_opLock
1004 , lir_lock
1005 , lir_unlock
1006 , end_opLock
1007 , begin_delay_slot
1008 , lir_delay_slot
1009 , end_delay_slot
1010 , begin_opTypeCheck
1011 , lir_instanceof
1012 , lir_checkcast
1013 , lir_store_check
1014 , end_opTypeCheck
1015 , begin_opFlattenedArrayCheck
1016 , lir_flattened_array_check
1017 , end_opFlattenedArrayCheck
1018 , begin_opNullFreeArrayCheck
1019 , lir_null_free_array_check
1020 , end_opNullFreeArrayCheck
1021 , begin_opSubstitutabilityCheck
1022 , lir_substitutability_check
1023 , end_opSubstitutabilityCheck
1024 , begin_opCompareAndSwap
1025 , lir_cas_long
1026 , lir_cas_obj
1027 , lir_cas_int
1028 , end_opCompareAndSwap
1029 , begin_opMDOProfile
1030 , lir_profile_call
1031 , lir_profile_type
1032 , lir_profile_inline_type
1033 , end_opMDOProfile
1034 , begin_opAssert
1035 , lir_assert
1036 , end_opAssert
1037 #ifdef INCLUDE_ZGC
1038 , begin_opZLoadBarrierTest
1039 , lir_zloadbarrier_test
1040 , end_opZLoadBarrierTest
1041 #endif
1042 };
1043
1044
1045 enum LIR_Condition {
1046 lir_cond_equal
1047 , lir_cond_notEqual
1048 , lir_cond_less
1049 , lir_cond_lessEqual
1050 , lir_cond_greaterEqual
1051 , lir_cond_greater
1052 , lir_cond_belowEqual
1053 , lir_cond_aboveEqual
1054 , lir_cond_always
1055 , lir_cond_unknown = -1
1056 };
1057
1058
1059 enum LIR_PatchCode {
1060 lir_patch_none,
1061 lir_patch_low,
1062 lir_patch_high,
1063 lir_patch_normal
1064 };
1065
1066
1067 enum LIR_MoveKind {
1068 lir_move_normal,
1069 lir_move_volatile,
1070 lir_move_wide,
1071 lir_move_max_flag
1072 };
1073
1074
1075 // --------------------------------------------------
1076 // LIR_Op
1077 // --------------------------------------------------
1078 class LIR_Op: public CompilationResourceObj {
1079 friend class LIR_OpVisitState;
1080
1081 #ifdef ASSERT
1082 private:
1083 const char * _file;
1084 int _line;
1085 #endif
1086
1087 protected:
1088 LIR_Opr _result;
1089 unsigned short _code;
1090 unsigned short _flags;
1091 CodeEmitInfo* _info;
1092 int _id; // value id for register allocation
1093 int _fpu_pop_count;
1094 Instruction* _source; // for debugging
1095
1096 static void print_condition(outputStream* out, LIR_Condition cond) PRODUCT_RETURN;
1097
1098 protected:
1099 static bool is_in_range(LIR_Code test, LIR_Code start, LIR_Code end) { return start < test && test < end; }
1100
1101 public:
1102 LIR_Op()
1103 :
1104 #ifdef ASSERT
1105 _file(NULL)
1106 , _line(0),
1107 #endif
1108 _result(LIR_OprFact::illegalOpr)
1109 , _code(lir_none)
1110 , _flags(0)
1111 , _info(NULL)
1112 , _id(-1)
1113 , _fpu_pop_count(0)
1114 , _source(NULL) {}
1115
1116 LIR_Op(LIR_Code code, LIR_Opr result, CodeEmitInfo* info)
1117 :
1118 #ifdef ASSERT
1119 _file(NULL)
1120 , _line(0),
1121 #endif
1122 _result(result)
1123 , _code(code)
1124 , _flags(0)
1125 , _info(info)
1126 , _id(-1)
1127 , _fpu_pop_count(0)
1128 , _source(NULL) {}
1129
1130 CodeEmitInfo* info() const { return _info; }
1131 LIR_Code code() const { return (LIR_Code)_code; }
1132 LIR_Opr result_opr() const { return _result; }
1133 void set_result_opr(LIR_Opr opr) { _result = opr; }
1134
1135 #ifdef ASSERT
1136 void set_file_and_line(const char * file, int line) {
1137 _file = file;
1138 _line = line;
1139 }
1140 #endif
1141
1142 virtual const char * name() const PRODUCT_RETURN0;
1143 virtual void visit(LIR_OpVisitState* state);
1144
1145 int id() const { return _id; }
1146 void set_id(int id) { _id = id; }
1147
1148 // FPU stack simulation helpers -- only used on Intel
1149 void set_fpu_pop_count(int count) { assert(count >= 0 && count <= 1, "currently only 0 and 1 are valid"); _fpu_pop_count = count; }
1150 int fpu_pop_count() const { return _fpu_pop_count; }
1151 bool pop_fpu_stack() { return _fpu_pop_count > 0; }
1152
1153 Instruction* source() const { return _source; }
1154 void set_source(Instruction* ins) { _source = ins; }
1155
1156 virtual void emit_code(LIR_Assembler* masm) = 0;
1157 virtual void print_instr(outputStream* out) const = 0;
1158 virtual void print_on(outputStream* st) const PRODUCT_RETURN;
1159
1160 virtual bool is_patching() { return false; }
1161 virtual LIR_OpCall* as_OpCall() { return NULL; }
1162 virtual LIR_OpJavaCall* as_OpJavaCall() { return NULL; }
1163 virtual LIR_OpLabel* as_OpLabel() { return NULL; }
1164 virtual LIR_OpDelay* as_OpDelay() { return NULL; }
1165 virtual LIR_OpLock* as_OpLock() { return NULL; }
1166 virtual LIR_OpAllocArray* as_OpAllocArray() { return NULL; }
1167 virtual LIR_OpAllocObj* as_OpAllocObj() { return NULL; }
1168 virtual LIR_OpRoundFP* as_OpRoundFP() { return NULL; }
1169 virtual LIR_OpBranch* as_OpBranch() { return NULL; }
1170 virtual LIR_OpReturn* as_OpReturn() { return NULL; }
1171 virtual LIR_OpRTCall* as_OpRTCall() { return NULL; }
1172 virtual LIR_OpConvert* as_OpConvert() { return NULL; }
1173 virtual LIR_Op0* as_Op0() { return NULL; }
1174 virtual LIR_Op1* as_Op1() { return NULL; }
1175 virtual LIR_Op2* as_Op2() { return NULL; }
1176 virtual LIR_Op3* as_Op3() { return NULL; }
1177 virtual LIR_Op4* as_Op4() { return NULL; }
1178 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return NULL; }
1179 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return NULL; }
1180 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return NULL; }
1181 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return NULL; }
1182 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return NULL; }
1183 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return NULL; }
1184 virtual LIR_OpCompareAndSwap* as_OpCompareAndSwap() { return NULL; }
1185 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return NULL; }
1186 virtual LIR_OpProfileCall* as_OpProfileCall() { return NULL; }
1187 virtual LIR_OpProfileType* as_OpProfileType() { return NULL; }
1188 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return NULL; }
1189 #ifdef ASSERT
1190 virtual LIR_OpAssert* as_OpAssert() { return NULL; }
1191 #endif
1192
1193 virtual void verify() const {}
1194 };
1195
1196 // for calls
1197 class LIR_OpCall: public LIR_Op {
1198 friend class LIR_OpVisitState;
1199
1200 protected:
1201 address _addr;
1202 LIR_OprList* _arguments;
1203 protected:
1204 LIR_OpCall(LIR_Code code, address addr, LIR_Opr result,
1205 LIR_OprList* arguments, CodeEmitInfo* info = NULL)
1206 : LIR_Op(code, result, info)
1207 , _addr(addr)
1208 , _arguments(arguments) {}
1209
1210 public:
1211 address addr() const { return _addr; }
1212 const LIR_OprList* arguments() const { return _arguments; }
1213 virtual LIR_OpCall* as_OpCall() { return this; }
1214 };
1215
1216
1217 // --------------------------------------------------
1218 // LIR_OpJavaCall
1219 // --------------------------------------------------
1220 class LIR_OpJavaCall: public LIR_OpCall {
1221 friend class LIR_OpVisitState;
1222
1223 private:
1224 ciMethod* _method;
1225 LIR_Opr _receiver;
1226 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.
1227
1228 public:
1229 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1230 LIR_Opr receiver, LIR_Opr result,
1231 address addr, LIR_OprList* arguments,
1232 CodeEmitInfo* info)
1233 : LIR_OpCall(code, addr, result, arguments, info)
1234 , _method(method)
1235 , _receiver(receiver)
1236 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1237 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1238
1239 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1240 LIR_Opr receiver, LIR_Opr result, intptr_t vtable_offset,
1241 LIR_OprList* arguments, CodeEmitInfo* info)
1242 : LIR_OpCall(code, (address)vtable_offset, result, arguments, info)
1243 , _method(method)
1244 , _receiver(receiver)
1245 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1246 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1247
1248 LIR_Opr receiver() const { return _receiver; }
1249 ciMethod* method() const { return _method; }
1250
1251 // JSR 292 support.
1252 bool is_invokedynamic() const { return code() == lir_dynamic_call; }
1253 bool is_method_handle_invoke() const {
1254 return method()->is_compiled_lambda_form() || // Java-generated lambda form
1255 method()->is_method_handle_intrinsic(); // JVM-generated MH intrinsic
1256 }
1257
1258 virtual void emit_code(LIR_Assembler* masm);
1259 virtual LIR_OpJavaCall* as_OpJavaCall() { return this; }
1260 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1261
1262 bool maybe_return_as_fields(ciInlineKlass** vk = NULL) const;
1263 };
1264
1265 // --------------------------------------------------
1266 // LIR_OpLabel
1267 // --------------------------------------------------
1268 // Location where a branch can continue
1269 class LIR_OpLabel: public LIR_Op {
1270 friend class LIR_OpVisitState;
1271
1272 private:
1273 Label* _label;
1274 public:
1275 LIR_OpLabel(Label* lbl)
1276 : LIR_Op(lir_label, LIR_OprFact::illegalOpr, NULL)
1277 , _label(lbl) {}
1278 Label* label() const { return _label; }
1279
1280 virtual void emit_code(LIR_Assembler* masm);
1281 virtual LIR_OpLabel* as_OpLabel() { return this; }
1282 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1283 };
1284
1285 // LIR_OpArrayCopy
1286 class LIR_OpArrayCopy: public LIR_Op {
1287 friend class LIR_OpVisitState;
1288
1289 private:
1290 ArrayCopyStub* _stub;
1291 LIR_Opr _src;
1292 LIR_Opr _src_pos;
1293 LIR_Opr _dst;
1294 LIR_Opr _dst_pos;
1295 LIR_Opr _length;
1296 LIR_Opr _tmp;
1297 ciArrayKlass* _expected_type;
1298 int _flags;
1299
1300 public:
1301 enum Flags {
1302 src_null_check = 1 << 0,
1303 dst_null_check = 1 << 1,
1304 src_pos_positive_check = 1 << 2,
1305 dst_pos_positive_check = 1 << 3,
1306 length_positive_check = 1 << 4,
1307 src_range_check = 1 << 5,
1308 dst_range_check = 1 << 6,
1309 type_check = 1 << 7,
1310 overlapping = 1 << 8,
1311 unaligned = 1 << 9,
1312 src_objarray = 1 << 10,
1313 dst_objarray = 1 << 11,
1314 always_slow_path = 1 << 12,
1315 src_inlinetype_check = 1 << 13,
1316 dst_inlinetype_check = 1 << 14,
1317 all_flags = (1 << 15) - 1
1318 };
1319
1320 LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp,
1321 ciArrayKlass* expected_type, int flags, CodeEmitInfo* info);
1322
1323 LIR_Opr src() const { return _src; }
1324 LIR_Opr src_pos() const { return _src_pos; }
1325 LIR_Opr dst() const { return _dst; }
1326 LIR_Opr dst_pos() const { return _dst_pos; }
1327 LIR_Opr length() const { return _length; }
1328 LIR_Opr tmp() const { return _tmp; }
1329 int flags() const { return _flags; }
1330 ciArrayKlass* expected_type() const { return _expected_type; }
1331 ArrayCopyStub* stub() const { return _stub; }
1332
1333 virtual void emit_code(LIR_Assembler* masm);
1334 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return this; }
1335 void print_instr(outputStream* out) const PRODUCT_RETURN;
1336 };
1337
1338 // LIR_OpUpdateCRC32
1339 class LIR_OpUpdateCRC32: public LIR_Op {
1340 friend class LIR_OpVisitState;
1341
1342 private:
1343 LIR_Opr _crc;
1344 LIR_Opr _val;
1345
1346 public:
1347
1348 LIR_OpUpdateCRC32(LIR_Opr crc, LIR_Opr val, LIR_Opr res);
1349
1350 LIR_Opr crc() const { return _crc; }
1351 LIR_Opr val() const { return _val; }
1352
1353 virtual void emit_code(LIR_Assembler* masm);
1354 virtual LIR_OpUpdateCRC32* as_OpUpdateCRC32() { return this; }
1355 void print_instr(outputStream* out) const PRODUCT_RETURN;
1356 };
1357
1358 // --------------------------------------------------
1359 // LIR_Op0
1360 // --------------------------------------------------
1361 class LIR_Op0: public LIR_Op {
1362 friend class LIR_OpVisitState;
1363
1364 public:
1365 LIR_Op0(LIR_Code code)
1366 : LIR_Op(code, LIR_OprFact::illegalOpr, NULL) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1367 LIR_Op0(LIR_Code code, LIR_Opr result, CodeEmitInfo* info = NULL)
1368 : LIR_Op(code, result, info) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1369
1370 virtual void emit_code(LIR_Assembler* masm);
1371 virtual LIR_Op0* as_Op0() { return this; }
1372 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1373 };
1374
1375
1376 // --------------------------------------------------
1377 // LIR_Op1
1378 // --------------------------------------------------
1379
1380 class LIR_Op1: public LIR_Op {
1381 friend class LIR_OpVisitState;
1382
1383 protected:
1384 LIR_Opr _opr; // input operand
1385 BasicType _type; // Operand types
1386 LIR_PatchCode _patch; // only required with patchin (NEEDS_CLEANUP: do we want a special instruction for patching?)
1387
1388 static void print_patch_code(outputStream* out, LIR_PatchCode code);
1389
1390 void set_kind(LIR_MoveKind kind) {
1391 assert(code() == lir_move, "must be");
1392 _flags = kind;
1393 }
1394
1395 public:
1396 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 = NULL)
1397 : LIR_Op(code, result, info)
1398 , _opr(opr)
1399 , _type(type)
1400 , _patch(patch) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1401
1402 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, BasicType type, LIR_PatchCode patch, CodeEmitInfo* info, LIR_MoveKind kind)
1403 : LIR_Op(code, result, info)
1404 , _opr(opr)
1405 , _type(type)
1406 , _patch(patch) {
1407 assert(code == lir_move, "must be");
1408 set_kind(kind);
1409 }
1410
1411 LIR_Op1(LIR_Code code, LIR_Opr opr, CodeEmitInfo* info)
1412 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1413 , _opr(opr)
1414 , _type(T_ILLEGAL)
1415 , _patch(lir_patch_none) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1416
1417 LIR_Opr in_opr() const { return _opr; }
1418 LIR_PatchCode patch_code() const { return _patch; }
1419 BasicType type() const { return _type; }
1420
1421 LIR_MoveKind move_kind() const {
1422 assert(code() == lir_move, "must be");
1423 return (LIR_MoveKind)_flags;
1424 }
1425
1426 virtual bool is_patching() { return _patch != lir_patch_none; }
1427 virtual void emit_code(LIR_Assembler* masm);
1428 virtual LIR_Op1* as_Op1() { return this; }
1429 virtual const char * name() const PRODUCT_RETURN0;
1430
1431 void set_in_opr(LIR_Opr opr) { _opr = opr; }
1432
1433 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1434 virtual void verify() const;
1435 };
1436
1437
1438 // for runtime calls
1439 class LIR_OpRTCall: public LIR_OpCall {
1440 friend class LIR_OpVisitState;
1441
1442 private:
1443 LIR_Opr _tmp;
1444 public:
1445 LIR_OpRTCall(address addr, LIR_Opr tmp,
1446 LIR_Opr result, LIR_OprList* arguments, CodeEmitInfo* info = NULL)
1447 : LIR_OpCall(lir_rtcall, addr, result, arguments, info)
1448 , _tmp(tmp) {}
1449
1450 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1451 virtual void emit_code(LIR_Assembler* masm);
1452 virtual LIR_OpRTCall* as_OpRTCall() { return this; }
1453
1454 LIR_Opr tmp() const { return _tmp; }
1455
1456 virtual void verify() const;
1457 };
1458
1459
1460
1461 class LIR_OpReturn: public LIR_Op1 {
1462 friend class LIR_OpVisitState;
1463
1464 private:
1465 C1SafepointPollStub* _stub;
1466
1467 public:
1468 LIR_OpReturn(LIR_Opr opr);
1469
1470 C1SafepointPollStub* stub() const { return _stub; }
1471 virtual LIR_OpReturn* as_OpReturn() { return this; }
1472 };
1473
1474 class ConversionStub;
1475
1476 class LIR_OpConvert: public LIR_Op1 {
1477 friend class LIR_OpVisitState;
1478
1479 private:
1480 Bytecodes::Code _bytecode;
1481 ConversionStub* _stub;
1482
1483 public:
1484 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub)
1485 : LIR_Op1(lir_convert, opr, result)
1486 , _bytecode(code)
1487 , _stub(stub) {}
1488
1489 Bytecodes::Code bytecode() const { return _bytecode; }
1490 ConversionStub* stub() const { return _stub; }
1491
1492 virtual void emit_code(LIR_Assembler* masm);
1493 virtual LIR_OpConvert* as_OpConvert() { return this; }
1494 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1495
1496 static void print_bytecode(outputStream* out, Bytecodes::Code code) PRODUCT_RETURN;
1497 };
1498
1499
1500 // LIR_OpAllocObj
1501 class LIR_OpAllocObj : public LIR_Op1 {
1502 friend class LIR_OpVisitState;
1503
1504 private:
1505 LIR_Opr _tmp1;
1506 LIR_Opr _tmp2;
1507 LIR_Opr _tmp3;
1508 LIR_Opr _tmp4;
1509 int _hdr_size;
1510 int _obj_size;
1511 CodeStub* _stub;
1512 bool _init_check;
1513
1514 public:
1515 LIR_OpAllocObj(LIR_Opr klass, LIR_Opr result,
1516 LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1517 int hdr_size, int obj_size, bool init_check, CodeStub* stub)
1518 : LIR_Op1(lir_alloc_object, klass, result)
1519 , _tmp1(t1)
1520 , _tmp2(t2)
1521 , _tmp3(t3)
1522 , _tmp4(t4)
1523 , _hdr_size(hdr_size)
1524 , _obj_size(obj_size)
1525 , _stub(stub)
1526 , _init_check(init_check) { }
1527
1528 LIR_Opr klass() const { return in_opr(); }
1529 LIR_Opr obj() const { return result_opr(); }
1530 LIR_Opr tmp1() const { return _tmp1; }
1531 LIR_Opr tmp2() const { return _tmp2; }
1532 LIR_Opr tmp3() const { return _tmp3; }
1533 LIR_Opr tmp4() const { return _tmp4; }
1534 int header_size() const { return _hdr_size; }
1535 int object_size() const { return _obj_size; }
1536 bool init_check() const { return _init_check; }
1537 CodeStub* stub() const { return _stub; }
1538
1539 virtual void emit_code(LIR_Assembler* masm);
1540 virtual LIR_OpAllocObj * as_OpAllocObj () { return this; }
1541 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1542 };
1543
1544
1545 // LIR_OpRoundFP
1546 class LIR_OpRoundFP : public LIR_Op1 {
1547 friend class LIR_OpVisitState;
1548
1549 private:
1550 LIR_Opr _tmp;
1551
1552 public:
1553 LIR_OpRoundFP(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result)
1554 : LIR_Op1(lir_roundfp, reg, result)
1555 , _tmp(stack_loc_temp) {}
1556
1557 LIR_Opr tmp() const { return _tmp; }
1558 virtual LIR_OpRoundFP* as_OpRoundFP() { return this; }
1559 void print_instr(outputStream* out) const PRODUCT_RETURN;
1560 };
1561
1562 // LIR_OpTypeCheck
1563 class LIR_OpTypeCheck: public LIR_Op {
1564 friend class LIR_OpVisitState;
1565
1566 private:
1567 LIR_Opr _object;
1568 LIR_Opr _array;
1569 ciKlass* _klass;
1570 LIR_Opr _tmp1;
1571 LIR_Opr _tmp2;
1572 LIR_Opr _tmp3;
1573 bool _fast_check;
1574 CodeEmitInfo* _info_for_patch;
1575 CodeEmitInfo* _info_for_exception;
1576 CodeStub* _stub;
1577 ciMethod* _profiled_method;
1578 int _profiled_bci;
1579 bool _should_profile;
1580 bool _need_null_check;
1581
1582 public:
1583 LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
1584 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1585 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub, bool need_null_check = true);
1586 LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array,
1587 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception);
1588
1589 LIR_Opr object() const { return _object; }
1590 LIR_Opr array() const { assert(code() == lir_store_check, "not valid"); return _array; }
1591 LIR_Opr tmp1() const { return _tmp1; }
1592 LIR_Opr tmp2() const { return _tmp2; }
1593 LIR_Opr tmp3() const { return _tmp3; }
1594 ciKlass* klass() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _klass; }
1595 bool fast_check() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _fast_check; }
1596 CodeEmitInfo* info_for_patch() const { return _info_for_patch; }
1597 CodeEmitInfo* info_for_exception() const { return _info_for_exception; }
1598 CodeStub* stub() const { return _stub; }
1599
1600 // MethodData* profiling
1601 void set_profiled_method(ciMethod *method) { _profiled_method = method; }
1602 void set_profiled_bci(int bci) { _profiled_bci = bci; }
1603 void set_should_profile(bool b) { _should_profile = b; }
1604 ciMethod* profiled_method() const { return _profiled_method; }
1605 int profiled_bci() const { return _profiled_bci; }
1606 bool should_profile() const { return _should_profile; }
1607 bool need_null_check() const { return _need_null_check; }
1608 virtual bool is_patching() { return _info_for_patch != NULL; }
1609 virtual void emit_code(LIR_Assembler* masm);
1610 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return this; }
1611 void print_instr(outputStream* out) const PRODUCT_RETURN;
1612 };
1613
1614 // LIR_OpFlattenedArrayCheck
1615 class LIR_OpFlattenedArrayCheck: public LIR_Op {
1616 friend class LIR_OpVisitState;
1617
1618 private:
1619 LIR_Opr _array;
1620 LIR_Opr _value;
1621 LIR_Opr _tmp;
1622 CodeStub* _stub;
1623 public:
1624 LIR_OpFlattenedArrayCheck(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
1625 LIR_Opr array() const { return _array; }
1626 LIR_Opr value() const { return _value; }
1627 LIR_Opr tmp() const { return _tmp; }
1628 CodeStub* stub() const { return _stub; }
1629
1630 virtual void emit_code(LIR_Assembler* masm);
1631 virtual LIR_OpFlattenedArrayCheck* as_OpFlattenedArrayCheck() { return this; }
1632 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1633 };
1634
1635 // LIR_OpNullFreeArrayCheck
1636 class LIR_OpNullFreeArrayCheck: public LIR_Op {
1637 friend class LIR_OpVisitState;
1638
1639 private:
1640 LIR_Opr _array;
1641 LIR_Opr _tmp;
1642 public:
1643 LIR_OpNullFreeArrayCheck(LIR_Opr array, LIR_Opr tmp);
1644 LIR_Opr array() const { return _array; }
1645 LIR_Opr tmp() const { return _tmp; }
1646
1647 virtual void emit_code(LIR_Assembler* masm);
1648 virtual LIR_OpNullFreeArrayCheck* as_OpNullFreeArrayCheck() { return this; }
1649 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1650 };
1651
1652 class LIR_OpSubstitutabilityCheck: public LIR_Op {
1653 friend class LIR_OpVisitState;
1654
1655 private:
1656 LIR_Opr _left;
1657 LIR_Opr _right;
1658 LIR_Opr _equal_result;
1659 LIR_Opr _not_equal_result;
1660 LIR_Opr _tmp1;
1661 LIR_Opr _tmp2;
1662 ciKlass* _left_klass;
1663 ciKlass* _right_klass;
1664 LIR_Opr _left_klass_op;
1665 LIR_Opr _right_klass_op;
1666 CodeStub* _stub;
1667 public:
1668 LIR_OpSubstitutabilityCheck(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
1669 LIR_Opr tmp1, LIR_Opr tmp2,
1670 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
1671 CodeEmitInfo* info, CodeStub* stub);
1672
1673 LIR_Opr left() const { return _left; }
1674 LIR_Opr right() const { return _right; }
1675 LIR_Opr equal_result() const { return _equal_result; }
1676 LIR_Opr not_equal_result() const { return _not_equal_result; }
1677 LIR_Opr tmp1() const { return _tmp1; }
1678 LIR_Opr tmp2() const { return _tmp2; }
1679 ciKlass* left_klass() const { return _left_klass; }
1680 ciKlass* right_klass() const { return _right_klass; }
1681 LIR_Opr left_klass_op() const { return _left_klass_op; }
1682 LIR_Opr right_klass_op() const { return _right_klass_op; }
1683 CodeStub* stub() const { return _stub; }
1684
1685 virtual void emit_code(LIR_Assembler* masm);
1686 virtual LIR_OpSubstitutabilityCheck* as_OpSubstitutabilityCheck() { return this; }
1687 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1688 };
1689
1690 // LIR_Op2
1691 class LIR_Op2: public LIR_Op {
1692 friend class LIR_OpVisitState;
1693
1694 int _fpu_stack_size; // for sin/cos implementation on Intel
1695
1696 protected:
1697 LIR_Opr _opr1;
1698 LIR_Opr _opr2;
1699 BasicType _type;
1700 LIR_Opr _tmp1;
1701 LIR_Opr _tmp2;
1702 LIR_Opr _tmp3;
1703 LIR_Opr _tmp4;
1704 LIR_Opr _tmp5;
1705 LIR_Condition _condition;
1706
1707 void verify() const;
1708
1709 public:
1710 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, CodeEmitInfo* info = NULL, BasicType type = T_ILLEGAL)
1711 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1712 , _fpu_stack_size(0)
1713 , _opr1(opr1)
1714 , _opr2(opr2)
1715 , _type(type)
1716 , _tmp1(LIR_OprFact::illegalOpr)
1717 , _tmp2(LIR_OprFact::illegalOpr)
1718 , _tmp3(LIR_OprFact::illegalOpr)
1719 , _tmp4(LIR_OprFact::illegalOpr)
1720 , _tmp5(LIR_OprFact::illegalOpr)
1721 , _condition(condition) {
1722 assert(code == lir_cmp || code == lir_branch || code == lir_cond_float_branch || code == lir_assert, "code check");
1723 }
1724
1725 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type)
1726 : LIR_Op(code, result, NULL)
1727 , _fpu_stack_size(0)
1728 , _opr1(opr1)
1729 , _opr2(opr2)
1730 , _type(type)
1731 , _tmp1(LIR_OprFact::illegalOpr)
1732 , _tmp2(LIR_OprFact::illegalOpr)
1733 , _tmp3(LIR_OprFact::illegalOpr)
1734 , _tmp4(LIR_OprFact::illegalOpr)
1735 , _tmp5(LIR_OprFact::illegalOpr)
1736 , _condition(condition) {
1737 assert(code == lir_cmove, "code check");
1738 assert(type != T_ILLEGAL, "cmove should have type");
1739 }
1740
1741 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result = LIR_OprFact::illegalOpr,
1742 CodeEmitInfo* info = NULL, BasicType type = T_ILLEGAL)
1743 : LIR_Op(code, result, info)
1744 , _fpu_stack_size(0)
1745 , _opr1(opr1)
1746 , _opr2(opr2)
1747 , _type(type)
1748 , _tmp1(LIR_OprFact::illegalOpr)
1749 , _tmp2(LIR_OprFact::illegalOpr)
1750 , _tmp3(LIR_OprFact::illegalOpr)
1751 , _tmp4(LIR_OprFact::illegalOpr)
1752 , _tmp5(LIR_OprFact::illegalOpr)
1753 , _condition(lir_cond_unknown) {
1754 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1755 }
1756
1757 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, LIR_Opr tmp1, LIR_Opr tmp2 = LIR_OprFact::illegalOpr,
1758 LIR_Opr tmp3 = LIR_OprFact::illegalOpr, LIR_Opr tmp4 = LIR_OprFact::illegalOpr, LIR_Opr tmp5 = LIR_OprFact::illegalOpr)
1759 : LIR_Op(code, result, NULL)
1760 , _fpu_stack_size(0)
1761 , _opr1(opr1)
1762 , _opr2(opr2)
1763 , _type(T_ILLEGAL)
1764 , _tmp1(tmp1)
1765 , _tmp2(tmp2)
1766 , _tmp3(tmp3)
1767 , _tmp4(tmp4)
1768 , _tmp5(tmp5)
1769 , _condition(lir_cond_unknown) {
1770 assert(code != lir_cmp && code != lir_branch && code != lir_cond_float_branch && is_in_range(code, begin_op2, end_op2), "code check");
1771 }
1772
1773 LIR_Opr in_opr1() const { return _opr1; }
1774 LIR_Opr in_opr2() const { return _opr2; }
1775 BasicType type() const { return _type; }
1776 LIR_Opr tmp1_opr() const { return _tmp1; }
1777 LIR_Opr tmp2_opr() const { return _tmp2; }
1778 LIR_Opr tmp3_opr() const { return _tmp3; }
1779 LIR_Opr tmp4_opr() const { return _tmp4; }
1780 LIR_Opr tmp5_opr() const { return _tmp5; }
1781 LIR_Condition condition() const {
1782 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch || code() == lir_assert, "only valid for branch and assert"); return _condition;
1783 }
1784 void set_condition(LIR_Condition condition) {
1785 assert(code() == lir_cmp || code() == lir_branch || code() == lir_cond_float_branch, "only valid for branch"); _condition = condition;
1786 }
1787
1788 void set_fpu_stack_size(int size) { _fpu_stack_size = size; }
1789 int fpu_stack_size() const { return _fpu_stack_size; }
1790
1791 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1792 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1793
1794 virtual void emit_code(LIR_Assembler* masm);
1795 virtual LIR_Op2* as_Op2() { return this; }
1796 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1797 };
1798
1799 class LIR_OpBranch: public LIR_Op2 {
1800 friend class LIR_OpVisitState;
1801
1802 private:
1803 Label* _label;
1804 BlockBegin* _block; // if this is a branch to a block, this is the block
1805 BlockBegin* _ublock; // if this is a float-branch, this is the unordered block
1806 CodeStub* _stub; // if this is a branch to a stub, this is the stub
1807
1808 public:
1809 LIR_OpBranch(LIR_Condition cond, Label* lbl)
1810 : LIR_Op2(lir_branch, cond, LIR_OprFact::illegalOpr, LIR_OprFact::illegalOpr, (CodeEmitInfo*) NULL)
1811 , _label(lbl)
1812 , _block(NULL)
1813 , _ublock(NULL)
1814 , _stub(NULL) { }
1815
1816 LIR_OpBranch(LIR_Condition cond, BlockBegin* block);
1817 LIR_OpBranch(LIR_Condition cond, CodeStub* stub);
1818
1819 // for unordered comparisons
1820 LIR_OpBranch(LIR_Condition cond, BlockBegin* block, BlockBegin* ublock);
1821
1822 LIR_Condition cond() const {
1823 return condition();
1824 }
1825
1826 void set_cond(LIR_Condition cond) {
1827 set_condition(cond);
1828 }
1829
1830 Label* label() const { return _label; }
1831 BlockBegin* block() const { return _block; }
1832 BlockBegin* ublock() const { return _ublock; }
1833 CodeStub* stub() const { return _stub; }
1834
1835 void change_block(BlockBegin* b);
1836 void change_ublock(BlockBegin* b);
1837 void negate_cond();
1838
1839 virtual void emit_code(LIR_Assembler* masm);
1840 virtual LIR_OpBranch* as_OpBranch() { return this; }
1841 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1842 };
1843
1844 class LIR_OpAllocArray : public LIR_Op {
1845 friend class LIR_OpVisitState;
1846
1847 private:
1848 LIR_Opr _klass;
1849 LIR_Opr _len;
1850 LIR_Opr _tmp1;
1851 LIR_Opr _tmp2;
1852 LIR_Opr _tmp3;
1853 LIR_Opr _tmp4;
1854 BasicType _type;
1855 CodeStub* _stub;
1856
1857 public:
1858 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)
1859 : LIR_Op(lir_alloc_array, result, NULL)
1860 , _klass(klass)
1861 , _len(len)
1862 , _tmp1(t1)
1863 , _tmp2(t2)
1864 , _tmp3(t3)
1865 , _tmp4(t4)
1866 , _type(type)
1867 , _stub(stub) {}
1868
1869 LIR_Opr klass() const { return _klass; }
1870 LIR_Opr len() const { return _len; }
1871 LIR_Opr obj() const { return result_opr(); }
1872 LIR_Opr tmp1() const { return _tmp1; }
1873 LIR_Opr tmp2() const { return _tmp2; }
1874 LIR_Opr tmp3() const { return _tmp3; }
1875 LIR_Opr tmp4() const { return _tmp4; }
1876 BasicType type() const { return _type; }
1877 CodeStub* stub() const { return _stub; }
1878
1879 virtual void emit_code(LIR_Assembler* masm);
1880 virtual LIR_OpAllocArray * as_OpAllocArray () { return this; }
1881 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1882 };
1883
1884
1885 class LIR_Op3: public LIR_Op {
1886 friend class LIR_OpVisitState;
1887
1888 private:
1889 LIR_Opr _opr1;
1890 LIR_Opr _opr2;
1891 LIR_Opr _opr3;
1892 public:
1893 LIR_Op3(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr result, CodeEmitInfo* info = NULL)
1894 : LIR_Op(code, result, info)
1895 , _opr1(opr1)
1896 , _opr2(opr2)
1897 , _opr3(opr3) { assert(is_in_range(code, begin_op3, end_op3), "code check"); }
1898 LIR_Opr in_opr1() const { return _opr1; }
1899 LIR_Opr in_opr2() const { return _opr2; }
1900 LIR_Opr in_opr3() const { return _opr3; }
1901
1902 virtual void emit_code(LIR_Assembler* masm);
1903 virtual LIR_Op3* as_Op3() { return this; }
1904 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1905 };
1906
1907 class LIR_Op4: public LIR_Op {
1908 friend class LIR_OpVisitState;
1909 protected:
1910 LIR_Opr _opr1;
1911 LIR_Opr _opr2;
1912 LIR_Opr _opr3;
1913 LIR_Opr _opr4;
1914 BasicType _type;
1915 LIR_Opr _tmp1;
1916 LIR_Opr _tmp2;
1917 LIR_Opr _tmp3;
1918 LIR_Opr _tmp4;
1919 LIR_Opr _tmp5;
1920 LIR_Condition _condition;
1921
1922 public:
1923 LIR_Op4(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr opr4,
1924 LIR_Opr result, BasicType type)
1925 : LIR_Op(code, result, NULL)
1926 , _opr1(opr1)
1927 , _opr2(opr2)
1928 , _opr3(opr3)
1929 , _opr4(opr4)
1930 , _type(type)
1931 , _tmp1(LIR_OprFact::illegalOpr)
1932 , _tmp2(LIR_OprFact::illegalOpr)
1933 , _tmp3(LIR_OprFact::illegalOpr)
1934 , _tmp4(LIR_OprFact::illegalOpr)
1935 , _tmp5(LIR_OprFact::illegalOpr)
1936 , _condition(condition) {
1937 assert(code == lir_cmove, "code check");
1938 assert(type != T_ILLEGAL, "cmove should have type");
1939 }
1940
1941 LIR_Opr in_opr1() const { return _opr1; }
1942 LIR_Opr in_opr2() const { return _opr2; }
1943 LIR_Opr in_opr3() const { return _opr3; }
1944 LIR_Opr in_opr4() const { return _opr4; }
1945 BasicType type() const { return _type; }
1946 LIR_Opr tmp1_opr() const { return _tmp1; }
1947 LIR_Opr tmp2_opr() const { return _tmp2; }
1948 LIR_Opr tmp3_opr() const { return _tmp3; }
1949 LIR_Opr tmp4_opr() const { return _tmp4; }
1950 LIR_Opr tmp5_opr() const { return _tmp5; }
1951
1952 LIR_Condition condition() const { return _condition; }
1953 void set_condition(LIR_Condition condition) { _condition = condition; }
1954
1955 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1956 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1957 void set_in_opr3(LIR_Opr opr) { _opr3 = opr; }
1958 void set_in_opr4(LIR_Opr opr) { _opr4 = opr; }
1959 virtual void emit_code(LIR_Assembler* masm);
1960 virtual LIR_Op4* as_Op4() { return this; }
1961
1962 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1963 };
1964
1965 //--------------------------------
1966 class LabelObj: public CompilationResourceObj {
1967 private:
1968 Label _label;
1969 public:
1970 LabelObj() {}
1971 Label* label() { return &_label; }
1972 };
1973
1974
1975 class LIR_OpLock: public LIR_Op {
1976 friend class LIR_OpVisitState;
1977
1978 private:
1979 LIR_Opr _hdr;
1980 LIR_Opr _obj;
1981 LIR_Opr _lock;
1982 LIR_Opr _scratch;
1983 CodeStub* _stub;
1984 CodeStub* _throw_imse_stub;
1985 public:
1986 LIR_OpLock(LIR_Code code, LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_imse_stub=NULL)
1987 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1988 , _hdr(hdr)
1989 , _obj(obj)
1990 , _lock(lock)
1991 , _scratch(scratch)
1992 , _stub(stub)
1993 , _throw_imse_stub(throw_imse_stub) {}
1994
1995 LIR_Opr hdr_opr() const { return _hdr; }
1996 LIR_Opr obj_opr() const { return _obj; }
1997 LIR_Opr lock_opr() const { return _lock; }
1998 LIR_Opr scratch_opr() const { return _scratch; }
1999 CodeStub* stub() const { return _stub; }
2000 CodeStub* throw_imse_stub() const { return _throw_imse_stub; }
2001
2002 virtual void emit_code(LIR_Assembler* masm);
2003 virtual LIR_OpLock* as_OpLock() { return this; }
2004 void print_instr(outputStream* out) const PRODUCT_RETURN;
2005 };
2006
2007 class LIR_OpLoadKlass: public LIR_Op {
2008 friend class LIR_OpVisitState;
2009
2010 private:
2011 LIR_Opr _obj;
2012 public:
2013 LIR_OpLoadKlass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info)
2014 : LIR_Op(lir_load_klass, result, info)
2015 , _obj(obj)
2016 {}
2017
2018 LIR_Opr obj() const { return _obj; }
2019
2020 virtual LIR_OpLoadKlass* as_OpLoadKlass() { return this; }
2021 virtual void emit_code(LIR_Assembler* masm);
2022 void print_instr(outputStream* out) const PRODUCT_RETURN;
2023 };
2024
2025 class LIR_OpDelay: public LIR_Op {
2026 friend class LIR_OpVisitState;
2027
2028 private:
2029 LIR_Op* _op;
2030
2031 public:
2032 LIR_OpDelay(LIR_Op* op, CodeEmitInfo* info):
2033 LIR_Op(lir_delay_slot, LIR_OprFact::illegalOpr, info),
2034 _op(op) {
2035 assert(op->code() == lir_nop, "should be filling with nops");
2036 }
2037 virtual void emit_code(LIR_Assembler* masm);
2038 virtual LIR_OpDelay* as_OpDelay() { return this; }
2039 void print_instr(outputStream* out) const PRODUCT_RETURN;
2040 LIR_Op* delay_op() const { return _op; }
2041 CodeEmitInfo* call_info() const { return info(); }
2042 };
2043
2044 #ifdef ASSERT
2045 // LIR_OpAssert
2046 class LIR_OpAssert : public LIR_Op2 {
2047 friend class LIR_OpVisitState;
2048
2049 private:
2050 const char* _msg;
2051 bool _halt;
2052
2053 public:
2054 LIR_OpAssert(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, const char* msg, bool halt)
2055 : LIR_Op2(lir_assert, condition, opr1, opr2)
2056 , _msg(msg)
2057 , _halt(halt) {
2058 }
2059
2060 const char* msg() const { return _msg; }
2061 bool halt() const { return _halt; }
2062
2063 virtual void emit_code(LIR_Assembler* masm);
2064 virtual LIR_OpAssert* as_OpAssert() { return this; }
2065 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2066 };
2067 #endif
2068
2069 // LIR_OpCompareAndSwap
2070 class LIR_OpCompareAndSwap : public LIR_Op {
2071 friend class LIR_OpVisitState;
2072
2073 private:
2074 LIR_Opr _addr;
2075 LIR_Opr _cmp_value;
2076 LIR_Opr _new_value;
2077 LIR_Opr _tmp1;
2078 LIR_Opr _tmp2;
2079
2080 public:
2081 LIR_OpCompareAndSwap(LIR_Code code, LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2082 LIR_Opr t1, LIR_Opr t2, LIR_Opr result)
2083 : LIR_Op(code, result, NULL) // no result, no info
2084 , _addr(addr)
2085 , _cmp_value(cmp_value)
2086 , _new_value(new_value)
2087 , _tmp1(t1)
2088 , _tmp2(t2) { }
2089
2090 LIR_Opr addr() const { return _addr; }
2091 LIR_Opr cmp_value() const { return _cmp_value; }
2092 LIR_Opr new_value() const { return _new_value; }
2093 LIR_Opr tmp1() const { return _tmp1; }
2094 LIR_Opr tmp2() const { return _tmp2; }
2095
2096 virtual void emit_code(LIR_Assembler* masm);
2097 virtual LIR_OpCompareAndSwap * as_OpCompareAndSwap () { return this; }
2098 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2099 };
2100
2101 // LIR_OpProfileCall
2102 class LIR_OpProfileCall : public LIR_Op {
2103 friend class LIR_OpVisitState;
2104
2105 private:
2106 ciMethod* _profiled_method;
2107 int _profiled_bci;
2108 ciMethod* _profiled_callee;
2109 LIR_Opr _mdo;
2110 LIR_Opr _recv;
2111 LIR_Opr _tmp1;
2112 ciKlass* _known_holder;
2113
2114 public:
2115 // Destroys recv
2116 LIR_OpProfileCall(ciMethod* profiled_method, int profiled_bci, ciMethod* profiled_callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* known_holder)
2117 : LIR_Op(lir_profile_call, LIR_OprFact::illegalOpr, NULL) // no result, no info
2118 , _profiled_method(profiled_method)
2119 , _profiled_bci(profiled_bci)
2120 , _profiled_callee(profiled_callee)
2121 , _mdo(mdo)
2122 , _recv(recv)
2123 , _tmp1(t1)
2124 , _known_holder(known_holder) { }
2125
2126 ciMethod* profiled_method() const { return _profiled_method; }
2127 int profiled_bci() const { return _profiled_bci; }
2128 ciMethod* profiled_callee() const { return _profiled_callee; }
2129 LIR_Opr mdo() const { return _mdo; }
2130 LIR_Opr recv() const { return _recv; }
2131 LIR_Opr tmp1() const { return _tmp1; }
2132 ciKlass* known_holder() const { return _known_holder; }
2133
2134 virtual void emit_code(LIR_Assembler* masm);
2135 virtual LIR_OpProfileCall* as_OpProfileCall() { return this; }
2136 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2137 bool should_profile_receiver_type() const {
2138 bool callee_is_static = _profiled_callee->is_loaded() && _profiled_callee->is_static();
2139 Bytecodes::Code bc = _profiled_method->java_code_at_bci(_profiled_bci);
2140 bool call_is_virtual = (bc == Bytecodes::_invokevirtual && !_profiled_callee->can_be_statically_bound()) || bc == Bytecodes::_invokeinterface;
2141 return C1ProfileVirtualCalls && call_is_virtual && !callee_is_static;
2142 }
2143 };
2144
2145 // LIR_OpProfileType
2146 class LIR_OpProfileType : public LIR_Op {
2147 friend class LIR_OpVisitState;
2148
2149 private:
2150 LIR_Opr _mdp;
2151 LIR_Opr _obj;
2152 LIR_Opr _tmp;
2153 ciKlass* _exact_klass; // non NULL if we know the klass statically (no need to load it from _obj)
2154 intptr_t _current_klass; // what the profiling currently reports
2155 bool _not_null; // true if we know statically that _obj cannot be null
2156 bool _no_conflict; // true if we're profling parameters, _exact_klass is not NULL and we know
2157 // _exact_klass it the only possible type for this parameter in any context.
2158
2159 public:
2160 // Destroys recv
2161 LIR_OpProfileType(LIR_Opr mdp, LIR_Opr obj, ciKlass* exact_klass, intptr_t current_klass, LIR_Opr tmp, bool not_null, bool no_conflict)
2162 : LIR_Op(lir_profile_type, LIR_OprFact::illegalOpr, NULL) // no result, no info
2163 , _mdp(mdp)
2164 , _obj(obj)
2165 , _tmp(tmp)
2166 , _exact_klass(exact_klass)
2167 , _current_klass(current_klass)
2168 , _not_null(not_null)
2169 , _no_conflict(no_conflict) { }
2170
2171 LIR_Opr mdp() const { return _mdp; }
2172 LIR_Opr obj() const { return _obj; }
2173 LIR_Opr tmp() const { return _tmp; }
2174 ciKlass* exact_klass() const { return _exact_klass; }
2175 intptr_t current_klass() const { return _current_klass; }
2176 bool not_null() const { return _not_null; }
2177 bool no_conflict() const { return _no_conflict; }
2178
2179 virtual void emit_code(LIR_Assembler* masm);
2180 virtual LIR_OpProfileType* as_OpProfileType() { return this; }
2181 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2182 };
2183
2184 // LIR_OpProfileInlineType
2185 class LIR_OpProfileInlineType : public LIR_Op {
2186 friend class LIR_OpVisitState;
2187
2188 private:
2189 LIR_Opr _mdp;
2190 LIR_Opr _obj;
2191 int _flag;
2192 LIR_Opr _tmp;
2193 bool _not_null; // true if we know statically that _obj cannot be null
2194
2195 public:
2196 // Destroys recv
2197 LIR_OpProfileInlineType(LIR_Opr mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null)
2198 : LIR_Op(lir_profile_inline_type, LIR_OprFact::illegalOpr, NULL) // no result, no info
2199 , _mdp(mdp)
2200 , _obj(obj)
2201 , _flag(flag)
2202 , _tmp(tmp)
2203 , _not_null(not_null) { }
2204
2205 LIR_Opr mdp() const { return _mdp; }
2206 LIR_Opr obj() const { return _obj; }
2207 int flag() const { return _flag; }
2208 LIR_Opr tmp() const { return _tmp; }
2209 bool not_null() const { return _not_null; }
2210
2211 virtual void emit_code(LIR_Assembler* masm);
2212 virtual LIR_OpProfileInlineType* as_OpProfileInlineType() { return this; }
2213 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
2214 };
2215
2216 class LIR_InsertionBuffer;
2217
2218 //--------------------------------LIR_List---------------------------------------------------
2219 // Maintains a list of LIR instructions (one instance of LIR_List per basic block)
2220 // The LIR instructions are appended by the LIR_List class itself;
2221 //
2222 // Notes:
2223 // - all offsets are(should be) in bytes
2224 // - local positions are specified with an offset, with offset 0 being local 0
2225
2226 class LIR_List: public CompilationResourceObj {
2227 private:
2228 LIR_OpList _operations;
2229
2230 Compilation* _compilation;
2231 #ifndef PRODUCT
2232 BlockBegin* _block;
2233 #endif
2234 #ifdef ASSERT
2235 const char * _file;
2236 int _line;
2237 #endif
2238 #ifdef RISCV
2239 LIR_Opr _cmp_opr1;
2240 LIR_Opr _cmp_opr2;
2241 #endif
2242
2243 public:
2244 void append(LIR_Op* op) {
2245 if (op->source() == NULL)
2246 op->set_source(_compilation->current_instruction());
2247 #ifndef PRODUCT
2248 if (PrintIRWithLIR) {
2249 _compilation->maybe_print_current_instruction();
2250 op->print(); tty->cr();
2251 }
2252 #endif // PRODUCT
2253
2254 #ifdef RISCV
2255 set_cmp_oprs(op);
2256 // lir_cmp set cmp oprs only on riscv
2257 if (op->code() == lir_cmp) return;
2258 #endif
2259
2260 _operations.append(op);
2261
2262 #ifdef ASSERT
2263 op->verify();
2264 op->set_file_and_line(_file, _line);
2265 _file = NULL;
2266 _line = 0;
2267 #endif
2268 }
2269
2270 LIR_List(Compilation* compilation, BlockBegin* block = NULL);
2271
2272 #ifdef ASSERT
2273 void set_file_and_line(const char * file, int line);
2274 #endif
2275
2276 #ifdef RISCV
2277 void set_cmp_oprs(LIR_Op* op);
2278 #endif
2279
2280 //---------- accessors ---------------
2281 LIR_OpList* instructions_list() { return &_operations; }
2282 int length() const { return _operations.length(); }
2283 LIR_Op* at(int i) const { return _operations.at(i); }
2284
2285 NOT_PRODUCT(BlockBegin* block() const { return _block; });
2286
2287 // insert LIR_Ops in buffer to right places in LIR_List
2288 void append(LIR_InsertionBuffer* buffer);
2289
2290 //---------- mutators ---------------
2291 void insert_before(int i, LIR_List* op_list) { _operations.insert_before(i, op_list->instructions_list()); }
2292 void insert_before(int i, LIR_Op* op) { _operations.insert_before(i, op); }
2293 void remove_at(int i) { _operations.remove_at(i); }
2294
2295 //---------- printing -------------
2296 void print_instructions() PRODUCT_RETURN;
2297
2298
2299 //---------- instructions -------------
2300 void call_opt_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2301 address dest, LIR_OprList* arguments,
2302 CodeEmitInfo* info) {
2303 append(new LIR_OpJavaCall(lir_optvirtual_call, method, receiver, result, dest, arguments, info));
2304 }
2305 void call_static(ciMethod* method, LIR_Opr result,
2306 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2307 append(new LIR_OpJavaCall(lir_static_call, method, LIR_OprFact::illegalOpr, result, dest, arguments, info));
2308 }
2309 void call_icvirtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2310 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2311 append(new LIR_OpJavaCall(lir_icvirtual_call, method, receiver, result, dest, arguments, info));
2312 }
2313 void call_dynamic(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
2314 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
2315 append(new LIR_OpJavaCall(lir_dynamic_call, method, receiver, result, dest, arguments, info));
2316 }
2317
2318 void get_thread(LIR_Opr result) { append(new LIR_Op0(lir_get_thread, result)); }
2319 void membar() { append(new LIR_Op0(lir_membar)); }
2320 void membar_acquire() { append(new LIR_Op0(lir_membar_acquire)); }
2321 void membar_release() { append(new LIR_Op0(lir_membar_release)); }
2322 void membar_loadload() { append(new LIR_Op0(lir_membar_loadload)); }
2323 void membar_storestore() { append(new LIR_Op0(lir_membar_storestore)); }
2324 void membar_loadstore() { append(new LIR_Op0(lir_membar_loadstore)); }
2325 void membar_storeload() { append(new LIR_Op0(lir_membar_storeload)); }
2326
2327 void nop() { append(new LIR_Op0(lir_nop)); }
2328
2329 void std_entry(LIR_Opr receiver) { append(new LIR_Op0(lir_std_entry, receiver)); }
2330 void osr_entry(LIR_Opr osrPointer) { append(new LIR_Op0(lir_osr_entry, osrPointer)); }
2331
2332 void on_spin_wait() { append(new LIR_Op0(lir_on_spin_wait)); }
2333
2334 void branch_destination(Label* lbl) { append(new LIR_OpLabel(lbl)); }
2335
2336 void leal(LIR_Opr from, LIR_Opr result_reg, LIR_PatchCode patch_code = lir_patch_none, CodeEmitInfo* info = NULL) { append(new LIR_Op1(lir_leal, from, result_reg, T_ILLEGAL, patch_code, info)); }
2337
2338 // result is a stack location for old backend and vreg for UseLinearScan
2339 // stack_loc_temp is an illegal register for old backend
2340 void roundfp(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result) { append(new LIR_OpRoundFP(reg, stack_loc_temp, result)); }
2341 void move(LIR_Opr src, LIR_Opr dst, CodeEmitInfo* info = NULL) { append(new LIR_Op1(lir_move, src, dst, dst->type(), lir_patch_none, info)); }
2342 void move(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = NULL) { append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info)); }
2343 void move(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = NULL) { append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info)); }
2344 void move_wide(LIR_Address* src, LIR_Opr dst, CodeEmitInfo* info = NULL) {
2345 if (UseCompressedOops) {
2346 append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, src->type(), lir_patch_none, info, lir_move_wide));
2347 } else {
2348 move(src, dst, info);
2349 }
2350 }
2351 void move_wide(LIR_Opr src, LIR_Address* dst, CodeEmitInfo* info = NULL) {
2352 if (UseCompressedOops) {
2353 append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), dst->type(), lir_patch_none, info, lir_move_wide));
2354 } else {
2355 move(src, dst, info);
2356 }
2357 }
2358 void volatile_move(LIR_Opr src, LIR_Opr dst, BasicType type, CodeEmitInfo* info = NULL, LIR_PatchCode patch_code = lir_patch_none) { append(new LIR_Op1(lir_move, src, dst, type, patch_code, info, lir_move_volatile)); }
2359
2360 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)); }
2361 void oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info);
2362
2363 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)); }
2364 void klass2reg_patch(Metadata* o, LIR_Opr reg, CodeEmitInfo* info);
2365
2366 void safepoint(LIR_Opr tmp, CodeEmitInfo* info) { append(new LIR_Op1(lir_safepoint, tmp, info)); }
2367 void return_op(LIR_Opr result) { append(new LIR_OpReturn(result)); }
2368
2369 void convert(Bytecodes::Code code, LIR_Opr left, LIR_Opr dst, ConversionStub* stub = NULL/*, bool is_32bit = false*/) { append(new LIR_OpConvert(code, left, dst, stub)); }
2370
2371 void logical_and (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_and, left, right, dst)); }
2372 void logical_or (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_or, left, right, dst)); }
2373 void logical_xor (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_xor, left, right, dst)); }
2374
2375 void null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null = false);
2376 void throw_exception(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2377 append(new LIR_Op2(lir_throw, exceptionPC, exceptionOop, LIR_OprFact::illegalOpr, info));
2378 }
2379 void unwind_exception(LIR_Opr exceptionOop) {
2380 append(new LIR_Op1(lir_unwind, exceptionOop));
2381 }
2382
2383 void push(LIR_Opr opr) { append(new LIR_Op1(lir_push, opr)); }
2384 void pop(LIR_Opr reg) { append(new LIR_Op1(lir_pop, reg)); }
2385
2386 void cmp(LIR_Condition condition, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info = NULL) {
2387 append(new LIR_Op2(lir_cmp, condition, left, right, info));
2388 }
2389 void cmp(LIR_Condition condition, LIR_Opr left, int right, CodeEmitInfo* info = NULL) {
2390 cmp(condition, left, LIR_OprFact::intConst(right), info);
2391 }
2392
2393 void cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info);
2394 void cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info);
2395
2396 void cmove(LIR_Condition condition, LIR_Opr src1, LIR_Opr src2, LIR_Opr dst, BasicType type,
2397 LIR_Opr cmp_opr1 = LIR_OprFact::illegalOpr, LIR_Opr cmp_opr2 = LIR_OprFact::illegalOpr) {
2398 append(new LIR_Op4(lir_cmove, condition, src1, src2, cmp_opr1, cmp_opr2, dst, type));
2399 }
2400
2401 void cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2402 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2403 void cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2404 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2405 void cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
2406 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
2407
2408 void abs (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_abs , from, tmp, to)); }
2409 void negate(LIR_Opr from, LIR_Opr to, LIR_Opr tmp = LIR_OprFact::illegalOpr) { append(new LIR_Op2(lir_neg, from, tmp, to)); }
2410 void sqrt(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_sqrt, from, tmp, to)); }
2411 void fmad(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmad, from, from1, from2, to)); }
2412 void fmaf(LIR_Opr from, LIR_Opr from1, LIR_Opr from2, LIR_Opr to) { append(new LIR_Op3(lir_fmaf, from, from1, from2, to)); }
2413 void log10 (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_log10, from, LIR_OprFact::illegalOpr, to, tmp)); }
2414 void tan (LIR_Opr from, LIR_Opr to, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_Op2(lir_tan , from, tmp1, to, tmp2)); }
2415
2416 void add (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_add, left, right, res)); }
2417 void sub (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = NULL) { append(new LIR_Op2(lir_sub, left, right, res, info)); }
2418 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_mul, left, right, res)); }
2419 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_mul, left, right, res, tmp)); }
2420 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = NULL) { append(new LIR_Op2(lir_div, left, right, res, info)); }
2421 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_div, left, right, res, tmp)); }
2422 void rem (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = NULL) { append(new LIR_Op2(lir_rem, left, right, res, info)); }
2423
2424 void volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2425 void volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2426
2427 void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = NULL, LIR_PatchCode patch_code = lir_patch_none);
2428
2429 void store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2430 void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2431 void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = NULL, LIR_PatchCode patch_code = lir_patch_none);
2432 void volatile_store_mem_reg(LIR_Opr src, LIR_Address* address, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2433 void volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2434
2435 void idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2436 void idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2437 void irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2438 void irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2439
2440 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);
2441 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);
2442
2443 // jump is an unconditional branch
2444 void jump(BlockBegin* block) {
2445 append(new LIR_OpBranch(lir_cond_always, block));
2446 }
2447 void jump(CodeStub* stub) {
2448 append(new LIR_OpBranch(lir_cond_always, stub));
2449 }
2450 void branch(LIR_Condition cond, Label* lbl) {
2451 append(new LIR_OpBranch(cond, lbl));
2452 }
2453 // Should not be used for fp comparisons
2454 void branch(LIR_Condition cond, BlockBegin* block) {
2455 append(new LIR_OpBranch(cond, block));
2456 }
2457 // Should not be used for fp comparisons
2458 void branch(LIR_Condition cond, CodeStub* stub) {
2459 append(new LIR_OpBranch(cond, stub));
2460 }
2461 // Should only be used for fp comparisons
2462 void branch(LIR_Condition cond, BlockBegin* block, BlockBegin* unordered) {
2463 append(new LIR_OpBranch(cond, block, unordered));
2464 }
2465
2466 void shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2467 void shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2468 void unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2469
2470 void shift_left(LIR_Opr value, int count, LIR_Opr dst) { shift_left(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2471 void shift_right(LIR_Opr value, int count, LIR_Opr dst) { shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2472 void unsigned_shift_right(LIR_Opr value, int count, LIR_Opr dst) { unsigned_shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2473
2474 void lcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_cmp_l2i, left, right, dst)); }
2475 void fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less);
2476
2477 void call_runtime_leaf(address routine, LIR_Opr tmp, LIR_Opr result, LIR_OprList* arguments) {
2478 append(new LIR_OpRTCall(routine, tmp, result, arguments));
2479 }
2480
2481 void call_runtime(address routine, LIR_Opr tmp, LIR_Opr result,
2482 LIR_OprList* arguments, CodeEmitInfo* info) {
2483 append(new LIR_OpRTCall(routine, tmp, result, arguments, info));
2484 }
2485
2486 void load_stack_address_monitor(int monitor_ix, LIR_Opr dst) { append(new LIR_Op1(lir_monaddr, LIR_OprFact::intConst(monitor_ix), dst)); }
2487 void unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub);
2488 void lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info, CodeStub* throw_imse_stub=NULL);
2489
2490 void breakpoint() { append(new LIR_Op0(lir_breakpoint)); }
2491
2492 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)); }
2493
2494 void update_crc32(LIR_Opr crc, LIR_Opr val, LIR_Opr res) { append(new LIR_OpUpdateCRC32(crc, val, res)); }
2495
2496 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);
2497 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);
2498 void check_flattened_array(LIR_Opr array, LIR_Opr value, LIR_Opr tmp, CodeStub* stub);
2499 void check_null_free_array(LIR_Opr array, LIR_Opr tmp);
2500 void substitutability_check(LIR_Opr result, LIR_Opr left, LIR_Opr right, LIR_Opr equal_result, LIR_Opr not_equal_result,
2501 LIR_Opr tmp1, LIR_Opr tmp2,
2502 ciKlass* left_klass, ciKlass* right_klass, LIR_Opr left_klass_op, LIR_Opr right_klass_op,
2503 CodeEmitInfo* info, CodeStub* stub);
2504
2505 void checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
2506 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
2507 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
2508 ciMethod* profiled_method, int profiled_bci, bool is_null_free);
2509 // MethodData* profiling
2510 void profile_call(ciMethod* method, int bci, ciMethod* callee, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* cha_klass) {
2511 append(new LIR_OpProfileCall(method, bci, callee, mdo, recv, t1, cha_klass));
2512 }
2513 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) {
2514 append(new LIR_OpProfileType(LIR_OprFact::address(mdp), obj, exact_klass, current_klass, tmp, not_null, no_conflict));
2515 }
2516 void profile_inline_type(LIR_Address* mdp, LIR_Opr obj, int flag, LIR_Opr tmp, bool not_null) {
2517 append(new LIR_OpProfileInlineType(LIR_OprFact::address(mdp), obj, flag, tmp, not_null));
2518 }
2519
2520 void xadd(LIR_Opr src, LIR_Opr add, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xadd, src, add, res, tmp)); }
2521 void xchg(LIR_Opr src, LIR_Opr set, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_xchg, src, set, res, tmp)); }
2522
2523 void load_klass(LIR_Opr obj, LIR_Opr result, CodeEmitInfo* info) { append(new LIR_OpLoadKlass(obj, result, info)); }
2524
2525 #ifdef ASSERT
2526 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)); }
2527 #endif
2528 };
2529
2530 void print_LIR(BlockList* blocks);
2531
2532 class LIR_InsertionBuffer : public CompilationResourceObj {
2533 private:
2534 LIR_List* _lir; // the lir list where ops of this buffer should be inserted later (NULL when uninitialized)
2535
2536 // list of insertion points. index and count are stored alternately:
2537 // _index_and_count[i * 2]: the index into lir list where "count" ops should be inserted
2538 // _index_and_count[i * 2 + 1]: the number of ops to be inserted at index
2539 intStack _index_and_count;
2540
2541 // the LIR_Ops to be inserted
2542 LIR_OpList _ops;
2543
2544 void append_new(int index, int count) { _index_and_count.append(index); _index_and_count.append(count); }
2545 void set_index_at(int i, int value) { _index_and_count.at_put((i << 1), value); }
2546 void set_count_at(int i, int value) { _index_and_count.at_put((i << 1) + 1, value); }
2547
2548 #ifdef ASSERT
2549 void verify();
2550 #endif
2551 public:
2552 LIR_InsertionBuffer() : _lir(NULL), _index_and_count(8), _ops(8) { }
2553
2554 // must be called before using the insertion buffer
2555 void init(LIR_List* lir) { assert(!initialized(), "already initialized"); _lir = lir; _index_and_count.clear(); _ops.clear(); }
2556 bool initialized() const { return _lir != NULL; }
2557 // called automatically when the buffer is appended to the LIR_List
2558 void finish() { _lir = NULL; }
2559
2560 // accessors
2561 LIR_List* lir_list() const { return _lir; }
2562 int number_of_insertion_points() const { return _index_and_count.length() >> 1; }
2563 int index_at(int i) const { return _index_and_count.at((i << 1)); }
2564 int count_at(int i) const { return _index_and_count.at((i << 1) + 1); }
2565
2566 int number_of_ops() const { return _ops.length(); }
2567 LIR_Op* op_at(int i) const { return _ops.at(i); }
2568
2569 // append an instruction to the buffer
2570 void append(int index, LIR_Op* op);
2571
2572 // instruction
2573 void move(int index, LIR_Opr src, LIR_Opr dst, CodeEmitInfo* info = NULL) { append(index, new LIR_Op1(lir_move, src, dst, dst->type(), lir_patch_none, info)); }
2574 };
2575
2576
2577 //
2578 // LIR_OpVisitState is used for manipulating LIR_Ops in an abstract way.
2579 // Calling a LIR_Op's visit function with a LIR_OpVisitState causes
2580 // information about the input, output and temporaries used by the
2581 // op to be recorded. It also records whether the op has call semantics
2582 // and also records all the CodeEmitInfos used by this op.
2583 //
2584
2585
2586 class LIR_OpVisitState: public StackObj {
2587 public:
2588 typedef enum { inputMode, firstMode = inputMode, tempMode, outputMode, numModes, invalidMode = -1 } OprMode;
2589
2590 enum {
2591 maxNumberOfOperands = 21,
2592 maxNumberOfInfos = 4
2593 };
2594
2595 private:
2596 LIR_Op* _op;
2597
2598 // optimization: the operands and infos are not stored in a variable-length
2599 // list, but in a fixed-size array to save time of size checks and resizing
2600 int _oprs_len[numModes];
2601 LIR_Opr* _oprs_new[numModes][maxNumberOfOperands];
2602 int _info_len;
2603 CodeEmitInfo* _info_new[maxNumberOfInfos];
2604
2605 bool _has_call;
2606 bool _has_slow_case;
2607
2608
2609 // only include register operands
2610 // addresses are decomposed to the base and index registers
2611 // constants and stack operands are ignored
2612 void append(LIR_Opr& opr, OprMode mode) {
2613 assert(opr->is_valid(), "should not call this otherwise");
2614 assert(mode >= 0 && mode < numModes, "bad mode");
2615
2616 if (opr->is_register()) {
2617 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2618 _oprs_new[mode][_oprs_len[mode]++] = &opr;
2619
2620 } else if (opr->is_pointer()) {
2621 LIR_Address* address = opr->as_address_ptr();
2622 if (address != NULL) {
2623 // special handling for addresses: add base and index register of the address
2624 // both are always input operands or temp if we want to extend
2625 // their liveness!
2626 if (mode == outputMode) {
2627 mode = inputMode;
2628 }
2629 assert (mode == inputMode || mode == tempMode, "input or temp only for addresses");
2630 if (address->_base->is_valid()) {
2631 assert(address->_base->is_register(), "must be");
2632 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2633 _oprs_new[mode][_oprs_len[mode]++] = &address->_base;
2634 }
2635 if (address->_index->is_valid()) {
2636 assert(address->_index->is_register(), "must be");
2637 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2638 _oprs_new[mode][_oprs_len[mode]++] = &address->_index;
2639 }
2640
2641 } else {
2642 assert(opr->is_constant(), "constant operands are not processed");
2643 }
2644 } else {
2645 assert(opr->is_stack(), "stack operands are not processed");
2646 }
2647 }
2648
2649 void append(CodeEmitInfo* info) {
2650 assert(info != NULL, "should not call this otherwise");
2651 assert(_info_len < maxNumberOfInfos, "array overflow");
2652 _info_new[_info_len++] = info;
2653 }
2654
2655 public:
2656 LIR_OpVisitState() { reset(); }
2657
2658 LIR_Op* op() const { return _op; }
2659 void set_op(LIR_Op* op) { reset(); _op = op; }
2660
2661 bool has_call() const { return _has_call; }
2662 bool has_slow_case() const { return _has_slow_case; }
2663
2664 void reset() {
2665 _op = NULL;
2666 _has_call = false;
2667 _has_slow_case = false;
2668
2669 _oprs_len[inputMode] = 0;
2670 _oprs_len[tempMode] = 0;
2671 _oprs_len[outputMode] = 0;
2672 _info_len = 0;
2673 }
2674
2675
2676 int opr_count(OprMode mode) const {
2677 assert(mode >= 0 && mode < numModes, "bad mode");
2678 return _oprs_len[mode];
2679 }
2680
2681 LIR_Opr opr_at(OprMode mode, int index) const {
2682 assert(mode >= 0 && mode < numModes, "bad mode");
2683 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2684 return *_oprs_new[mode][index];
2685 }
2686
2687 void set_opr_at(OprMode mode, int index, LIR_Opr opr) const {
2688 assert(mode >= 0 && mode < numModes, "bad mode");
2689 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2690 *_oprs_new[mode][index] = opr;
2691 }
2692
2693 int info_count() const {
2694 return _info_len;
2695 }
2696
2697 CodeEmitInfo* info_at(int index) const {
2698 assert(index < _info_len, "index out of bounds");
2699 return _info_new[index];
2700 }
2701
2702 XHandlers* all_xhandler();
2703
2704 // collects all register operands of the instruction
2705 void visit(LIR_Op* op);
2706
2707 #ifdef ASSERT
2708 // check that an operation has no operands
2709 bool no_operands(LIR_Op* op);
2710 #endif
2711
2712 // LIR_Op visitor functions use these to fill in the state
2713 void do_input(LIR_Opr& opr) { append(opr, LIR_OpVisitState::inputMode); }
2714 void do_output(LIR_Opr& opr) { append(opr, LIR_OpVisitState::outputMode); }
2715 void do_temp(LIR_Opr& opr) { append(opr, LIR_OpVisitState::tempMode); }
2716 void do_info(CodeEmitInfo* info) { append(info); }
2717
2718 void do_stub(CodeStub* stub);
2719 void do_call() { _has_call = true; }
2720 void do_slow_case() { _has_slow_case = true; }
2721 void do_slow_case(CodeEmitInfo* info) {
2722 _has_slow_case = true;
2723 append(info);
2724 }
2725 };
2726
2727
2728 inline LIR_Opr LIR_Opr::illegalOpr() { return LIR_OprFact::illegalOpr; };
2729
2730 inline LIR_Opr LIR_Opr::nullOpr() { return LIR_OprFact::nullOpr; };
2731
2732 #endif // SHARE_C1_C1_LIR_HPP