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src/share/vm/c1/c1_LIR.hpp@87b64980e2f1
src/share/vm/c1/c1_LIR.hpp
Wed, 22 Sep 2010 21:10:46 -0700
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- never
- date
- Wed, 22 Sep 2010 21:10:46 -0700
- changeset 2171
- 87b64980e2f1
- parent 2146
- 3a294e483abc
- child 2314
- f95d63e2154a
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- -rw-r--r--
6972540: sun/nio/ch/SocketChannelImpl compilation crashed when executing CompileTheWorld
Reviewed-by: kvn
1 /*
2 * Copyright (c) 2000, 2010, 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 */
25 class BlockBegin;
26 class BlockList;
27 class LIR_Assembler;
28 class CodeEmitInfo;
29 class CodeStub;
30 class CodeStubList;
31 class ArrayCopyStub;
32 class LIR_Op;
33 class ciType;
34 class ValueType;
35 class LIR_OpVisitState;
36 class FpuStackSim;
38 //---------------------------------------------------------------------
39 // LIR Operands
40 // LIR_OprDesc
41 // LIR_OprPtr
42 // LIR_Const
43 // LIR_Address
44 //---------------------------------------------------------------------
45 class LIR_OprDesc;
46 class LIR_OprPtr;
47 class LIR_Const;
48 class LIR_Address;
49 class LIR_OprVisitor;
52 typedef LIR_OprDesc* LIR_Opr;
53 typedef int RegNr;
55 define_array(LIR_OprArray, LIR_Opr)
56 define_stack(LIR_OprList, LIR_OprArray)
58 define_array(LIR_OprRefArray, LIR_Opr*)
59 define_stack(LIR_OprRefList, LIR_OprRefArray)
61 define_array(CodeEmitInfoArray, CodeEmitInfo*)
62 define_stack(CodeEmitInfoList, CodeEmitInfoArray)
64 define_array(LIR_OpArray, LIR_Op*)
65 define_stack(LIR_OpList, LIR_OpArray)
67 // define LIR_OprPtr early so LIR_OprDesc can refer to it
68 class LIR_OprPtr: public CompilationResourceObj {
69 public:
70 bool is_oop_pointer() const { return (type() == T_OBJECT); }
71 bool is_float_kind() const { BasicType t = type(); return (t == T_FLOAT) || (t == T_DOUBLE); }
73 virtual LIR_Const* as_constant() { return NULL; }
74 virtual LIR_Address* as_address() { return NULL; }
75 virtual BasicType type() const = 0;
76 virtual void print_value_on(outputStream* out) const = 0;
77 };
81 // LIR constants
82 class LIR_Const: public LIR_OprPtr {
83 private:
84 JavaValue _value;
86 void type_check(BasicType t) const { assert(type() == t, "type check"); }
87 void type_check(BasicType t1, BasicType t2) const { assert(type() == t1 || type() == t2, "type check"); }
88 void type_check(BasicType t1, BasicType t2, BasicType t3) const { assert(type() == t1 || type() == t2 || type() == t3, "type check"); }
90 public:
91 LIR_Const(jint i, bool is_address=false) { _value.set_type(is_address?T_ADDRESS:T_INT); _value.set_jint(i); }
92 LIR_Const(jlong l) { _value.set_type(T_LONG); _value.set_jlong(l); }
93 LIR_Const(jfloat f) { _value.set_type(T_FLOAT); _value.set_jfloat(f); }
94 LIR_Const(jdouble d) { _value.set_type(T_DOUBLE); _value.set_jdouble(d); }
95 LIR_Const(jobject o) { _value.set_type(T_OBJECT); _value.set_jobject(o); }
96 LIR_Const(void* p) {
97 #ifdef _LP64
98 assert(sizeof(jlong) >= sizeof(p), "too small");;
99 _value.set_type(T_LONG); _value.set_jlong((jlong)p);
100 #else
101 assert(sizeof(jint) >= sizeof(p), "too small");;
102 _value.set_type(T_INT); _value.set_jint((jint)p);
103 #endif
104 }
106 virtual BasicType type() const { return _value.get_type(); }
107 virtual LIR_Const* as_constant() { return this; }
109 jint as_jint() const { type_check(T_INT, T_ADDRESS); return _value.get_jint(); }
110 jlong as_jlong() const { type_check(T_LONG ); return _value.get_jlong(); }
111 jfloat as_jfloat() const { type_check(T_FLOAT ); return _value.get_jfloat(); }
112 jdouble as_jdouble() const { type_check(T_DOUBLE); return _value.get_jdouble(); }
113 jobject as_jobject() const { type_check(T_OBJECT); return _value.get_jobject(); }
114 jint as_jint_lo() const { type_check(T_LONG ); return low(_value.get_jlong()); }
115 jint as_jint_hi() const { type_check(T_LONG ); return high(_value.get_jlong()); }
117 #ifdef _LP64
118 address as_pointer() const { type_check(T_LONG ); return (address)_value.get_jlong(); }
119 #else
120 address as_pointer() const { type_check(T_INT ); return (address)_value.get_jint(); }
121 #endif
124 jint as_jint_bits() const { type_check(T_FLOAT, T_INT, T_ADDRESS); return _value.get_jint(); }
125 jint as_jint_lo_bits() const {
126 if (type() == T_DOUBLE) {
127 return low(jlong_cast(_value.get_jdouble()));
128 } else {
129 return as_jint_lo();
130 }
131 }
132 jint as_jint_hi_bits() const {
133 if (type() == T_DOUBLE) {
134 return high(jlong_cast(_value.get_jdouble()));
135 } else {
136 return as_jint_hi();
137 }
138 }
139 jlong as_jlong_bits() const {
140 if (type() == T_DOUBLE) {
141 return jlong_cast(_value.get_jdouble());
142 } else {
143 return as_jlong();
144 }
145 }
147 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
150 bool is_zero_float() {
151 jfloat f = as_jfloat();
152 jfloat ok = 0.0f;
153 return jint_cast(f) == jint_cast(ok);
154 }
156 bool is_one_float() {
157 jfloat f = as_jfloat();
158 return !g_isnan(f) && g_isfinite(f) && f == 1.0;
159 }
161 bool is_zero_double() {
162 jdouble d = as_jdouble();
163 jdouble ok = 0.0;
164 return jlong_cast(d) == jlong_cast(ok);
165 }
167 bool is_one_double() {
168 jdouble d = as_jdouble();
169 return !g_isnan(d) && g_isfinite(d) && d == 1.0;
170 }
171 };
174 //---------------------LIR Operand descriptor------------------------------------
175 //
176 // The class LIR_OprDesc represents a LIR instruction operand;
177 // it can be a register (ALU/FPU), stack location or a constant;
178 // Constants and addresses are represented as resource area allocated
179 // structures (see above).
180 // Registers and stack locations are inlined into the this pointer
181 // (see value function).
183 class LIR_OprDesc: public CompilationResourceObj {
184 public:
185 // value structure:
186 // data opr-type opr-kind
187 // +--------------+-------+-------+
188 // [max...........|7 6 5 4|3 2 1 0]
189 // ^
190 // is_pointer bit
191 //
192 // lowest bit cleared, means it is a structure pointer
193 // we need 4 bits to represent types
195 private:
196 friend class LIR_OprFact;
198 // Conversion
199 intptr_t value() const { return (intptr_t) this; }
201 bool check_value_mask(intptr_t mask, intptr_t masked_value) const {
202 return (value() & mask) == masked_value;
203 }
205 enum OprKind {
206 pointer_value = 0
207 , stack_value = 1
208 , cpu_register = 3
209 , fpu_register = 5
210 , illegal_value = 7
211 };
213 enum OprBits {
214 pointer_bits = 1
215 , kind_bits = 3
216 , type_bits = 4
217 , size_bits = 2
218 , destroys_bits = 1
219 , virtual_bits = 1
220 , is_xmm_bits = 1
221 , last_use_bits = 1
222 , is_fpu_stack_offset_bits = 1 // used in assertion checking on x86 for FPU stack slot allocation
223 , non_data_bits = kind_bits + type_bits + size_bits + destroys_bits + last_use_bits +
224 is_fpu_stack_offset_bits + virtual_bits + is_xmm_bits
225 , data_bits = BitsPerInt - non_data_bits
226 , reg_bits = data_bits / 2 // for two registers in one value encoding
227 };
229 enum OprShift {
230 kind_shift = 0
231 , type_shift = kind_shift + kind_bits
232 , size_shift = type_shift + type_bits
233 , destroys_shift = size_shift + size_bits
234 , last_use_shift = destroys_shift + destroys_bits
235 , is_fpu_stack_offset_shift = last_use_shift + last_use_bits
236 , virtual_shift = is_fpu_stack_offset_shift + is_fpu_stack_offset_bits
237 , is_xmm_shift = virtual_shift + virtual_bits
238 , data_shift = is_xmm_shift + is_xmm_bits
239 , reg1_shift = data_shift
240 , reg2_shift = data_shift + reg_bits
242 };
244 enum OprSize {
245 single_size = 0 << size_shift
246 , double_size = 1 << size_shift
247 };
249 enum OprMask {
250 kind_mask = right_n_bits(kind_bits)
251 , type_mask = right_n_bits(type_bits) << type_shift
252 , size_mask = right_n_bits(size_bits) << size_shift
253 , last_use_mask = right_n_bits(last_use_bits) << last_use_shift
254 , is_fpu_stack_offset_mask = right_n_bits(is_fpu_stack_offset_bits) << is_fpu_stack_offset_shift
255 , virtual_mask = right_n_bits(virtual_bits) << virtual_shift
256 , is_xmm_mask = right_n_bits(is_xmm_bits) << is_xmm_shift
257 , pointer_mask = right_n_bits(pointer_bits)
258 , lower_reg_mask = right_n_bits(reg_bits)
259 , no_type_mask = (int)(~(type_mask | last_use_mask | is_fpu_stack_offset_mask))
260 };
262 uintptr_t data() const { return value() >> data_shift; }
263 int lo_reg_half() const { return data() & lower_reg_mask; }
264 int hi_reg_half() const { return (data() >> reg_bits) & lower_reg_mask; }
265 OprKind kind_field() const { return (OprKind)(value() & kind_mask); }
266 OprSize size_field() const { return (OprSize)(value() & size_mask); }
268 static char type_char(BasicType t);
270 public:
271 enum {
272 vreg_base = ConcreteRegisterImpl::number_of_registers,
273 vreg_max = (1 << data_bits) - 1
274 };
276 static inline LIR_Opr illegalOpr();
278 enum OprType {
279 unknown_type = 0 << type_shift // means: not set (catch uninitialized types)
280 , int_type = 1 << type_shift
281 , long_type = 2 << type_shift
282 , object_type = 3 << type_shift
283 , address_type = 4 << type_shift
284 , float_type = 5 << type_shift
285 , double_type = 6 << type_shift
286 };
287 friend OprType as_OprType(BasicType t);
288 friend BasicType as_BasicType(OprType t);
290 OprType type_field_valid() const { assert(is_register() || is_stack(), "should not be called otherwise"); return (OprType)(value() & type_mask); }
291 OprType type_field() const { return is_illegal() ? unknown_type : (OprType)(value() & type_mask); }
293 static OprSize size_for(BasicType t) {
294 switch (t) {
295 case T_LONG:
296 case T_DOUBLE:
297 return double_size;
298 break;
300 case T_FLOAT:
301 case T_BOOLEAN:
302 case T_CHAR:
303 case T_BYTE:
304 case T_SHORT:
305 case T_INT:
306 case T_ADDRESS:
307 case T_OBJECT:
308 case T_ARRAY:
309 return single_size;
310 break;
312 default:
313 ShouldNotReachHere();
314 return single_size;
315 }
316 }
319 void validate_type() const PRODUCT_RETURN;
321 BasicType type() const {
322 if (is_pointer()) {
323 return pointer()->type();
324 }
325 return as_BasicType(type_field());
326 }
329 ValueType* value_type() const { return as_ValueType(type()); }
331 char type_char() const { return type_char((is_pointer()) ? pointer()->type() : type()); }
333 bool is_equal(LIR_Opr opr) const { return this == opr; }
334 // checks whether types are same
335 bool is_same_type(LIR_Opr opr) const {
336 assert(type_field() != unknown_type &&
337 opr->type_field() != unknown_type, "shouldn't see unknown_type");
338 return type_field() == opr->type_field();
339 }
340 bool is_same_register(LIR_Opr opr) {
341 return (is_register() && opr->is_register() &&
342 kind_field() == opr->kind_field() &&
343 (value() & no_type_mask) == (opr->value() & no_type_mask));
344 }
346 bool is_pointer() const { return check_value_mask(pointer_mask, pointer_value); }
347 bool is_illegal() const { return kind_field() == illegal_value; }
348 bool is_valid() const { return kind_field() != illegal_value; }
350 bool is_register() const { return is_cpu_register() || is_fpu_register(); }
351 bool is_virtual() const { return is_virtual_cpu() || is_virtual_fpu(); }
353 bool is_constant() const { return is_pointer() && pointer()->as_constant() != NULL; }
354 bool is_address() const { return is_pointer() && pointer()->as_address() != NULL; }
356 bool is_float_kind() const { return is_pointer() ? pointer()->is_float_kind() : (kind_field() == fpu_register); }
357 bool is_oop() const;
359 // semantic for fpu- and xmm-registers:
360 // * is_float and is_double return true for xmm_registers
361 // (so is_single_fpu and is_single_xmm are true)
362 // * So you must always check for is_???_xmm prior to is_???_fpu to
363 // distinguish between fpu- and xmm-registers
365 bool is_stack() const { validate_type(); return check_value_mask(kind_mask, stack_value); }
366 bool is_single_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | single_size); }
367 bool is_double_stack() const { validate_type(); return check_value_mask(kind_mask | size_mask, stack_value | double_size); }
369 bool is_cpu_register() const { validate_type(); return check_value_mask(kind_mask, cpu_register); }
370 bool is_virtual_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register | virtual_mask); }
371 bool is_fixed_cpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, cpu_register); }
372 bool is_single_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | single_size); }
373 bool is_double_cpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, cpu_register | double_size); }
375 bool is_fpu_register() const { validate_type(); return check_value_mask(kind_mask, fpu_register); }
376 bool is_virtual_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register | virtual_mask); }
377 bool is_fixed_fpu() const { validate_type(); return check_value_mask(kind_mask | virtual_mask, fpu_register); }
378 bool is_single_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | single_size); }
379 bool is_double_fpu() const { validate_type(); return check_value_mask(kind_mask | size_mask, fpu_register | double_size); }
381 bool is_xmm_register() const { validate_type(); return check_value_mask(kind_mask | is_xmm_mask, fpu_register | is_xmm_mask); }
382 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); }
383 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); }
385 // fast accessor functions for special bits that do not work for pointers
386 // (in this functions, the check for is_pointer() is omitted)
387 bool is_single_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, single_size); }
388 bool is_double_word() const { assert(is_register() || is_stack(), "type check"); return check_value_mask(size_mask, double_size); }
389 bool is_virtual_register() const { assert(is_register(), "type check"); return check_value_mask(virtual_mask, virtual_mask); }
390 bool is_oop_register() const { assert(is_register() || is_stack(), "type check"); return type_field_valid() == object_type; }
391 BasicType type_register() const { assert(is_register() || is_stack(), "type check"); return as_BasicType(type_field_valid()); }
393 bool is_last_use() const { assert(is_register(), "only works for registers"); return (value() & last_use_mask) != 0; }
394 bool is_fpu_stack_offset() const { assert(is_register(), "only works for registers"); return (value() & is_fpu_stack_offset_mask) != 0; }
395 LIR_Opr make_last_use() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | last_use_mask); }
396 LIR_Opr make_fpu_stack_offset() { assert(is_register(), "only works for registers"); return (LIR_Opr)(value() | is_fpu_stack_offset_mask); }
399 int single_stack_ix() const { assert(is_single_stack() && !is_virtual(), "type check"); return (int)data(); }
400 int double_stack_ix() const { assert(is_double_stack() && !is_virtual(), "type check"); return (int)data(); }
401 RegNr cpu_regnr() const { assert(is_single_cpu() && !is_virtual(), "type check"); return (RegNr)data(); }
402 RegNr cpu_regnrLo() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
403 RegNr cpu_regnrHi() const { assert(is_double_cpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
404 RegNr fpu_regnr() const { assert(is_single_fpu() && !is_virtual(), "type check"); return (RegNr)data(); }
405 RegNr fpu_regnrLo() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
406 RegNr fpu_regnrHi() const { assert(is_double_fpu() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
407 RegNr xmm_regnr() const { assert(is_single_xmm() && !is_virtual(), "type check"); return (RegNr)data(); }
408 RegNr xmm_regnrLo() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)lo_reg_half(); }
409 RegNr xmm_regnrHi() const { assert(is_double_xmm() && !is_virtual(), "type check"); return (RegNr)hi_reg_half(); }
410 int vreg_number() const { assert(is_virtual(), "type check"); return (RegNr)data(); }
412 LIR_OprPtr* pointer() const { assert(is_pointer(), "type check"); return (LIR_OprPtr*)this; }
413 LIR_Const* as_constant_ptr() const { return pointer()->as_constant(); }
414 LIR_Address* as_address_ptr() const { return pointer()->as_address(); }
416 Register as_register() const;
417 Register as_register_lo() const;
418 Register as_register_hi() const;
420 Register as_pointer_register() {
421 #ifdef _LP64
422 if (is_double_cpu()) {
423 assert(as_register_lo() == as_register_hi(), "should be a single register");
424 return as_register_lo();
425 }
426 #endif
427 return as_register();
428 }
430 #ifdef X86
431 XMMRegister as_xmm_float_reg() const;
432 XMMRegister as_xmm_double_reg() const;
433 // for compatibility with RInfo
434 int fpu () const { return lo_reg_half(); }
435 #endif // X86
436 #if defined(SPARC) || defined(ARM) || defined(PPC)
437 FloatRegister as_float_reg () const;
438 FloatRegister as_double_reg () const;
439 #endif
441 jint as_jint() const { return as_constant_ptr()->as_jint(); }
442 jlong as_jlong() const { return as_constant_ptr()->as_jlong(); }
443 jfloat as_jfloat() const { return as_constant_ptr()->as_jfloat(); }
444 jdouble as_jdouble() const { return as_constant_ptr()->as_jdouble(); }
445 jobject as_jobject() const { return as_constant_ptr()->as_jobject(); }
447 void print() const PRODUCT_RETURN;
448 void print(outputStream* out) const PRODUCT_RETURN;
449 };
452 inline LIR_OprDesc::OprType as_OprType(BasicType type) {
453 switch (type) {
454 case T_INT: return LIR_OprDesc::int_type;
455 case T_LONG: return LIR_OprDesc::long_type;
456 case T_FLOAT: return LIR_OprDesc::float_type;
457 case T_DOUBLE: return LIR_OprDesc::double_type;
458 case T_OBJECT:
459 case T_ARRAY: return LIR_OprDesc::object_type;
460 case T_ADDRESS: return LIR_OprDesc::address_type;
461 case T_ILLEGAL: // fall through
462 default: ShouldNotReachHere(); return LIR_OprDesc::unknown_type;
463 }
464 }
466 inline BasicType as_BasicType(LIR_OprDesc::OprType t) {
467 switch (t) {
468 case LIR_OprDesc::int_type: return T_INT;
469 case LIR_OprDesc::long_type: return T_LONG;
470 case LIR_OprDesc::float_type: return T_FLOAT;
471 case LIR_OprDesc::double_type: return T_DOUBLE;
472 case LIR_OprDesc::object_type: return T_OBJECT;
473 case LIR_OprDesc::address_type: return T_ADDRESS;
474 case LIR_OprDesc::unknown_type: // fall through
475 default: ShouldNotReachHere(); return T_ILLEGAL;
476 }
477 }
480 // LIR_Address
481 class LIR_Address: public LIR_OprPtr {
482 friend class LIR_OpVisitState;
484 public:
485 // NOTE: currently these must be the log2 of the scale factor (and
486 // must also be equivalent to the ScaleFactor enum in
487 // assembler_i486.hpp)
488 enum Scale {
489 times_1 = 0,
490 times_2 = 1,
491 times_4 = 2,
492 times_8 = 3
493 };
495 private:
496 LIR_Opr _base;
497 LIR_Opr _index;
498 Scale _scale;
499 intx _disp;
500 BasicType _type;
502 public:
503 LIR_Address(LIR_Opr base, LIR_Opr index, BasicType type):
504 _base(base)
505 , _index(index)
506 , _scale(times_1)
507 , _type(type)
508 , _disp(0) { verify(); }
510 LIR_Address(LIR_Opr base, intx disp, BasicType type):
511 _base(base)
512 , _index(LIR_OprDesc::illegalOpr())
513 , _scale(times_1)
514 , _type(type)
515 , _disp(disp) { verify(); }
517 LIR_Address(LIR_Opr base, BasicType type):
518 _base(base)
519 , _index(LIR_OprDesc::illegalOpr())
520 , _scale(times_1)
521 , _type(type)
522 , _disp(0) { verify(); }
524 #if defined(X86) || defined(ARM)
525 LIR_Address(LIR_Opr base, LIR_Opr index, Scale scale, intx disp, BasicType type):
526 _base(base)
527 , _index(index)
528 , _scale(scale)
529 , _type(type)
530 , _disp(disp) { verify(); }
531 #endif // X86 || ARM
533 LIR_Opr base() const { return _base; }
534 LIR_Opr index() const { return _index; }
535 Scale scale() const { return _scale; }
536 intx disp() const { return _disp; }
538 bool equals(LIR_Address* other) const { return base() == other->base() && index() == other->index() && disp() == other->disp() && scale() == other->scale(); }
540 virtual LIR_Address* as_address() { return this; }
541 virtual BasicType type() const { return _type; }
542 virtual void print_value_on(outputStream* out) const PRODUCT_RETURN;
544 void verify() const PRODUCT_RETURN;
546 static Scale scale(BasicType type);
547 };
550 // operand factory
551 class LIR_OprFact: public AllStatic {
552 public:
554 static LIR_Opr illegalOpr;
556 static LIR_Opr single_cpu(int reg) {
557 return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) |
558 LIR_OprDesc::int_type |
559 LIR_OprDesc::cpu_register |
560 LIR_OprDesc::single_size);
561 }
562 static LIR_Opr single_cpu_oop(int reg) {
563 return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) |
564 LIR_OprDesc::object_type |
565 LIR_OprDesc::cpu_register |
566 LIR_OprDesc::single_size);
567 }
568 static LIR_Opr single_cpu_address(int reg) {
569 return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) |
570 LIR_OprDesc::address_type |
571 LIR_OprDesc::cpu_register |
572 LIR_OprDesc::single_size);
573 }
574 static LIR_Opr double_cpu(int reg1, int reg2) {
575 LP64_ONLY(assert(reg1 == reg2, "must be identical"));
576 return (LIR_Opr)(intptr_t)((reg1 << LIR_OprDesc::reg1_shift) |
577 (reg2 << LIR_OprDesc::reg2_shift) |
578 LIR_OprDesc::long_type |
579 LIR_OprDesc::cpu_register |
580 LIR_OprDesc::double_size);
581 }
583 static LIR_Opr single_fpu(int reg) { return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) |
584 LIR_OprDesc::float_type |
585 LIR_OprDesc::fpu_register |
586 LIR_OprDesc::single_size); }
587 #if defined(ARM)
588 static LIR_Opr double_fpu(int reg1, int reg2) { return (LIR_Opr)((reg1 << LIR_OprDesc::reg1_shift) | (reg2 << LIR_OprDesc::reg2_shift) | LIR_OprDesc::double_type | LIR_OprDesc::fpu_register | LIR_OprDesc::double_size); }
589 static LIR_Opr single_softfp(int reg) { return (LIR_Opr)((reg << LIR_OprDesc::reg1_shift) | LIR_OprDesc::float_type | LIR_OprDesc::cpu_register | LIR_OprDesc::single_size); }
590 static LIR_Opr double_softfp(int reg1, int reg2) { return (LIR_Opr)((reg1 << LIR_OprDesc::reg1_shift) | (reg2 << LIR_OprDesc::reg2_shift) | LIR_OprDesc::double_type | LIR_OprDesc::cpu_register | LIR_OprDesc::double_size); }
591 #endif
592 #ifdef SPARC
593 static LIR_Opr double_fpu(int reg1, int reg2) { return (LIR_Opr)(intptr_t)((reg1 << LIR_OprDesc::reg1_shift) |
594 (reg2 << LIR_OprDesc::reg2_shift) |
595 LIR_OprDesc::double_type |
596 LIR_OprDesc::fpu_register |
597 LIR_OprDesc::double_size); }
598 #endif
599 #ifdef X86
600 static LIR_Opr double_fpu(int reg) { return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) |
601 (reg << LIR_OprDesc::reg2_shift) |
602 LIR_OprDesc::double_type |
603 LIR_OprDesc::fpu_register |
604 LIR_OprDesc::double_size); }
606 static LIR_Opr single_xmm(int reg) { return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) |
607 LIR_OprDesc::float_type |
608 LIR_OprDesc::fpu_register |
609 LIR_OprDesc::single_size |
610 LIR_OprDesc::is_xmm_mask); }
611 static LIR_Opr double_xmm(int reg) { return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) |
612 (reg << LIR_OprDesc::reg2_shift) |
613 LIR_OprDesc::double_type |
614 LIR_OprDesc::fpu_register |
615 LIR_OprDesc::double_size |
616 LIR_OprDesc::is_xmm_mask); }
617 #endif // X86
618 #ifdef PPC
619 static LIR_Opr double_fpu(int reg) { return (LIR_Opr)(intptr_t)((reg << LIR_OprDesc::reg1_shift) |
620 (reg << LIR_OprDesc::reg2_shift) |
621 LIR_OprDesc::double_type |
622 LIR_OprDesc::fpu_register |
623 LIR_OprDesc::double_size); }
624 static LIR_Opr single_softfp(int reg) { return (LIR_Opr)((reg << LIR_OprDesc::reg1_shift) |
625 LIR_OprDesc::float_type |
626 LIR_OprDesc::cpu_register |
627 LIR_OprDesc::single_size); }
628 static LIR_Opr double_softfp(int reg1, int reg2) { return (LIR_Opr)((reg2 << LIR_OprDesc::reg1_shift) |
629 (reg1 << LIR_OprDesc::reg2_shift) |
630 LIR_OprDesc::double_type |
631 LIR_OprDesc::cpu_register |
632 LIR_OprDesc::double_size); }
633 #endif // PPC
635 static LIR_Opr virtual_register(int index, BasicType type) {
636 LIR_Opr res;
637 switch (type) {
638 case T_OBJECT: // fall through
639 case T_ARRAY:
640 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
641 LIR_OprDesc::object_type |
642 LIR_OprDesc::cpu_register |
643 LIR_OprDesc::single_size |
644 LIR_OprDesc::virtual_mask);
645 break;
647 case T_INT:
648 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
649 LIR_OprDesc::int_type |
650 LIR_OprDesc::cpu_register |
651 LIR_OprDesc::single_size |
652 LIR_OprDesc::virtual_mask);
653 break;
655 case T_ADDRESS:
656 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
657 LIR_OprDesc::address_type |
658 LIR_OprDesc::cpu_register |
659 LIR_OprDesc::single_size |
660 LIR_OprDesc::virtual_mask);
661 break;
663 case T_LONG:
664 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
665 LIR_OprDesc::long_type |
666 LIR_OprDesc::cpu_register |
667 LIR_OprDesc::double_size |
668 LIR_OprDesc::virtual_mask);
669 break;
671 #ifdef __SOFTFP__
672 case T_FLOAT:
673 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
674 LIR_OprDesc::float_type |
675 LIR_OprDesc::cpu_register |
676 LIR_OprDesc::single_size |
677 LIR_OprDesc::virtual_mask);
678 break;
679 case T_DOUBLE:
680 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
681 LIR_OprDesc::double_type |
682 LIR_OprDesc::cpu_register |
683 LIR_OprDesc::double_size |
684 LIR_OprDesc::virtual_mask);
685 break;
686 #else // __SOFTFP__
687 case T_FLOAT:
688 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
689 LIR_OprDesc::float_type |
690 LIR_OprDesc::fpu_register |
691 LIR_OprDesc::single_size |
692 LIR_OprDesc::virtual_mask);
693 break;
695 case
696 T_DOUBLE: res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
697 LIR_OprDesc::double_type |
698 LIR_OprDesc::fpu_register |
699 LIR_OprDesc::double_size |
700 LIR_OprDesc::virtual_mask);
701 break;
702 #endif // __SOFTFP__
703 default: ShouldNotReachHere(); res = illegalOpr;
704 }
706 #ifdef ASSERT
707 res->validate_type();
708 assert(res->vreg_number() == index, "conversion check");
709 assert(index >= LIR_OprDesc::vreg_base, "must start at vreg_base");
710 assert(index <= (max_jint >> LIR_OprDesc::data_shift), "index is too big");
712 // old-style calculation; check if old and new method are equal
713 LIR_OprDesc::OprType t = as_OprType(type);
714 #ifdef __SOFTFP__
715 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
716 t |
717 LIR_OprDesc::cpu_register |
718 LIR_OprDesc::size_for(type) | LIR_OprDesc::virtual_mask);
719 #else // __SOFTFP__
720 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) | t |
721 ((type == T_FLOAT || type == T_DOUBLE) ? LIR_OprDesc::fpu_register : LIR_OprDesc::cpu_register) |
722 LIR_OprDesc::size_for(type) | LIR_OprDesc::virtual_mask);
723 assert(res == old_res, "old and new method not equal");
724 #endif // __SOFTFP__
725 #endif // ASSERT
727 return res;
728 }
730 // 'index' is computed by FrameMap::local_stack_pos(index); do not use other parameters as
731 // the index is platform independent; a double stack useing indeces 2 and 3 has always
732 // index 2.
733 static LIR_Opr stack(int index, BasicType type) {
734 LIR_Opr res;
735 switch (type) {
736 case T_OBJECT: // fall through
737 case T_ARRAY:
738 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
739 LIR_OprDesc::object_type |
740 LIR_OprDesc::stack_value |
741 LIR_OprDesc::single_size);
742 break;
744 case T_INT:
745 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
746 LIR_OprDesc::int_type |
747 LIR_OprDesc::stack_value |
748 LIR_OprDesc::single_size);
749 break;
751 case T_ADDRESS:
752 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
753 LIR_OprDesc::address_type |
754 LIR_OprDesc::stack_value |
755 LIR_OprDesc::single_size);
756 break;
758 case T_LONG:
759 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
760 LIR_OprDesc::long_type |
761 LIR_OprDesc::stack_value |
762 LIR_OprDesc::double_size);
763 break;
765 case T_FLOAT:
766 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
767 LIR_OprDesc::float_type |
768 LIR_OprDesc::stack_value |
769 LIR_OprDesc::single_size);
770 break;
771 case T_DOUBLE:
772 res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
773 LIR_OprDesc::double_type |
774 LIR_OprDesc::stack_value |
775 LIR_OprDesc::double_size);
776 break;
778 default: ShouldNotReachHere(); res = illegalOpr;
779 }
781 #ifdef ASSERT
782 assert(index >= 0, "index must be positive");
783 assert(index <= (max_jint >> LIR_OprDesc::data_shift), "index is too big");
785 LIR_Opr old_res = (LIR_Opr)(intptr_t)((index << LIR_OprDesc::data_shift) |
786 LIR_OprDesc::stack_value |
787 as_OprType(type) |
788 LIR_OprDesc::size_for(type));
789 assert(res == old_res, "old and new method not equal");
790 #endif
792 return res;
793 }
795 static LIR_Opr intConst(jint i) { return (LIR_Opr)(new LIR_Const(i)); }
796 static LIR_Opr longConst(jlong l) { return (LIR_Opr)(new LIR_Const(l)); }
797 static LIR_Opr floatConst(jfloat f) { return (LIR_Opr)(new LIR_Const(f)); }
798 static LIR_Opr doubleConst(jdouble d) { return (LIR_Opr)(new LIR_Const(d)); }
799 static LIR_Opr oopConst(jobject o) { return (LIR_Opr)(new LIR_Const(o)); }
800 static LIR_Opr address(LIR_Address* a) { return (LIR_Opr)a; }
801 static LIR_Opr intptrConst(void* p) { return (LIR_Opr)(new LIR_Const(p)); }
802 static LIR_Opr intptrConst(intptr_t v) { return (LIR_Opr)(new LIR_Const((void*)v)); }
803 static LIR_Opr illegal() { return (LIR_Opr)-1; }
804 static LIR_Opr addressConst(jint i) { return (LIR_Opr)(new LIR_Const(i, true)); }
806 static LIR_Opr value_type(ValueType* type);
807 static LIR_Opr dummy_value_type(ValueType* type);
808 };
811 //-------------------------------------------------------------------------------
812 // LIR Instructions
813 //-------------------------------------------------------------------------------
814 //
815 // Note:
816 // - every instruction has a result operand
817 // - every instruction has an CodeEmitInfo operand (can be revisited later)
818 // - every instruction has a LIR_OpCode operand
819 // - LIR_OpN, means an instruction that has N input operands
820 //
821 // class hierarchy:
822 //
823 class LIR_Op;
824 class LIR_Op0;
825 class LIR_OpLabel;
826 class LIR_Op1;
827 class LIR_OpBranch;
828 class LIR_OpConvert;
829 class LIR_OpAllocObj;
830 class LIR_OpRoundFP;
831 class LIR_Op2;
832 class LIR_OpDelay;
833 class LIR_Op3;
834 class LIR_OpAllocArray;
835 class LIR_OpCall;
836 class LIR_OpJavaCall;
837 class LIR_OpRTCall;
838 class LIR_OpArrayCopy;
839 class LIR_OpLock;
840 class LIR_OpTypeCheck;
841 class LIR_OpCompareAndSwap;
842 class LIR_OpProfileCall;
845 // LIR operation codes
846 enum LIR_Code {
847 lir_none
848 , begin_op0
849 , lir_word_align
850 , lir_label
851 , lir_nop
852 , lir_backwardbranch_target
853 , lir_std_entry
854 , lir_osr_entry
855 , lir_build_frame
856 , lir_fpop_raw
857 , lir_24bit_FPU
858 , lir_reset_FPU
859 , lir_breakpoint
860 , lir_rtcall
861 , lir_membar
862 , lir_membar_acquire
863 , lir_membar_release
864 , lir_get_thread
865 , end_op0
866 , begin_op1
867 , lir_fxch
868 , lir_fld
869 , lir_ffree
870 , lir_push
871 , lir_pop
872 , lir_null_check
873 , lir_return
874 , lir_leal
875 , lir_neg
876 , lir_branch
877 , lir_cond_float_branch
878 , lir_move
879 , lir_prefetchr
880 , lir_prefetchw
881 , lir_convert
882 , lir_alloc_object
883 , lir_monaddr
884 , lir_roundfp
885 , lir_safepoint
886 , lir_pack64
887 , lir_unpack64
888 , lir_unwind
889 , end_op1
890 , begin_op2
891 , lir_cmp
892 , lir_cmp_l2i
893 , lir_ucmp_fd2i
894 , lir_cmp_fd2i
895 , lir_cmove
896 , lir_add
897 , lir_sub
898 , lir_mul
899 , lir_mul_strictfp
900 , lir_div
901 , lir_div_strictfp
902 , lir_rem
903 , lir_sqrt
904 , lir_abs
905 , lir_sin
906 , lir_cos
907 , lir_tan
908 , lir_log
909 , lir_log10
910 , lir_logic_and
911 , lir_logic_or
912 , lir_logic_xor
913 , lir_shl
914 , lir_shr
915 , lir_ushr
916 , lir_alloc_array
917 , lir_throw
918 , lir_compare_to
919 , end_op2
920 , begin_op3
921 , lir_idiv
922 , lir_irem
923 , end_op3
924 , begin_opJavaCall
925 , lir_static_call
926 , lir_optvirtual_call
927 , lir_icvirtual_call
928 , lir_virtual_call
929 , lir_dynamic_call
930 , end_opJavaCall
931 , begin_opArrayCopy
932 , lir_arraycopy
933 , end_opArrayCopy
934 , begin_opLock
935 , lir_lock
936 , lir_unlock
937 , end_opLock
938 , begin_delay_slot
939 , lir_delay_slot
940 , end_delay_slot
941 , begin_opTypeCheck
942 , lir_instanceof
943 , lir_checkcast
944 , lir_store_check
945 , end_opTypeCheck
946 , begin_opCompareAndSwap
947 , lir_cas_long
948 , lir_cas_obj
949 , lir_cas_int
950 , end_opCompareAndSwap
951 , begin_opMDOProfile
952 , lir_profile_call
953 , end_opMDOProfile
954 };
957 enum LIR_Condition {
958 lir_cond_equal
959 , lir_cond_notEqual
960 , lir_cond_less
961 , lir_cond_lessEqual
962 , lir_cond_greaterEqual
963 , lir_cond_greater
964 , lir_cond_belowEqual
965 , lir_cond_aboveEqual
966 , lir_cond_always
967 , lir_cond_unknown = -1
968 };
971 enum LIR_PatchCode {
972 lir_patch_none,
973 lir_patch_low,
974 lir_patch_high,
975 lir_patch_normal
976 };
979 enum LIR_MoveKind {
980 lir_move_normal,
981 lir_move_volatile,
982 lir_move_unaligned,
983 lir_move_max_flag
984 };
987 // --------------------------------------------------
988 // LIR_Op
989 // --------------------------------------------------
990 class LIR_Op: public CompilationResourceObj {
991 friend class LIR_OpVisitState;
993 #ifdef ASSERT
994 private:
995 const char * _file;
996 int _line;
997 #endif
999 protected:
1000 LIR_Opr _result;
1001 unsigned short _code;
1002 unsigned short _flags;
1003 CodeEmitInfo* _info;
1004 int _id; // value id for register allocation
1005 int _fpu_pop_count;
1006 Instruction* _source; // for debugging
1008 static void print_condition(outputStream* out, LIR_Condition cond) PRODUCT_RETURN;
1010 protected:
1011 static bool is_in_range(LIR_Code test, LIR_Code start, LIR_Code end) { return start < test && test < end; }
1013 public:
1014 LIR_Op()
1015 : _result(LIR_OprFact::illegalOpr)
1016 , _code(lir_none)
1017 , _flags(0)
1018 , _info(NULL)
1019 #ifdef ASSERT
1020 , _file(NULL)
1021 , _line(0)
1022 #endif
1023 , _fpu_pop_count(0)
1024 , _source(NULL)
1025 , _id(-1) {}
1027 LIR_Op(LIR_Code code, LIR_Opr result, CodeEmitInfo* info)
1028 : _result(result)
1029 , _code(code)
1030 , _flags(0)
1031 , _info(info)
1032 #ifdef ASSERT
1033 , _file(NULL)
1034 , _line(0)
1035 #endif
1036 , _fpu_pop_count(0)
1037 , _source(NULL)
1038 , _id(-1) {}
1040 CodeEmitInfo* info() const { return _info; }
1041 LIR_Code code() const { return (LIR_Code)_code; }
1042 LIR_Opr result_opr() const { return _result; }
1043 void set_result_opr(LIR_Opr opr) { _result = opr; }
1045 #ifdef ASSERT
1046 void set_file_and_line(const char * file, int line) {
1047 _file = file;
1048 _line = line;
1049 }
1050 #endif
1052 virtual const char * name() const PRODUCT_RETURN0;
1054 int id() const { return _id; }
1055 void set_id(int id) { _id = id; }
1057 // FPU stack simulation helpers -- only used on Intel
1058 void set_fpu_pop_count(int count) { assert(count >= 0 && count <= 1, "currently only 0 and 1 are valid"); _fpu_pop_count = count; }
1059 int fpu_pop_count() const { return _fpu_pop_count; }
1060 bool pop_fpu_stack() { return _fpu_pop_count > 0; }
1062 Instruction* source() const { return _source; }
1063 void set_source(Instruction* ins) { _source = ins; }
1065 virtual void emit_code(LIR_Assembler* masm) = 0;
1066 virtual void print_instr(outputStream* out) const = 0;
1067 virtual void print_on(outputStream* st) const PRODUCT_RETURN;
1069 virtual LIR_OpCall* as_OpCall() { return NULL; }
1070 virtual LIR_OpJavaCall* as_OpJavaCall() { return NULL; }
1071 virtual LIR_OpLabel* as_OpLabel() { return NULL; }
1072 virtual LIR_OpDelay* as_OpDelay() { return NULL; }
1073 virtual LIR_OpLock* as_OpLock() { return NULL; }
1074 virtual LIR_OpAllocArray* as_OpAllocArray() { return NULL; }
1075 virtual LIR_OpAllocObj* as_OpAllocObj() { return NULL; }
1076 virtual LIR_OpRoundFP* as_OpRoundFP() { return NULL; }
1077 virtual LIR_OpBranch* as_OpBranch() { return NULL; }
1078 virtual LIR_OpRTCall* as_OpRTCall() { return NULL; }
1079 virtual LIR_OpConvert* as_OpConvert() { return NULL; }
1080 virtual LIR_Op0* as_Op0() { return NULL; }
1081 virtual LIR_Op1* as_Op1() { return NULL; }
1082 virtual LIR_Op2* as_Op2() { return NULL; }
1083 virtual LIR_Op3* as_Op3() { return NULL; }
1084 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return NULL; }
1085 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return NULL; }
1086 virtual LIR_OpCompareAndSwap* as_OpCompareAndSwap() { return NULL; }
1087 virtual LIR_OpProfileCall* as_OpProfileCall() { return NULL; }
1089 virtual void verify() const {}
1090 };
1092 // for calls
1093 class LIR_OpCall: public LIR_Op {
1094 friend class LIR_OpVisitState;
1096 protected:
1097 address _addr;
1098 LIR_OprList* _arguments;
1099 protected:
1100 LIR_OpCall(LIR_Code code, address addr, LIR_Opr result,
1101 LIR_OprList* arguments, CodeEmitInfo* info = NULL)
1102 : LIR_Op(code, result, info)
1103 , _arguments(arguments)
1104 , _addr(addr) {}
1106 public:
1107 address addr() const { return _addr; }
1108 const LIR_OprList* arguments() const { return _arguments; }
1109 virtual LIR_OpCall* as_OpCall() { return this; }
1110 };
1113 // --------------------------------------------------
1114 // LIR_OpJavaCall
1115 // --------------------------------------------------
1116 class LIR_OpJavaCall: public LIR_OpCall {
1117 friend class LIR_OpVisitState;
1119 private:
1120 ciMethod* _method;
1121 LIR_Opr _receiver;
1122 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.
1124 public:
1125 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1126 LIR_Opr receiver, LIR_Opr result,
1127 address addr, LIR_OprList* arguments,
1128 CodeEmitInfo* info)
1129 : LIR_OpCall(code, addr, result, arguments, info)
1130 , _receiver(receiver)
1131 , _method(method)
1132 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1133 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1135 LIR_OpJavaCall(LIR_Code code, ciMethod* method,
1136 LIR_Opr receiver, LIR_Opr result, intptr_t vtable_offset,
1137 LIR_OprList* arguments, CodeEmitInfo* info)
1138 : LIR_OpCall(code, (address)vtable_offset, result, arguments, info)
1139 , _receiver(receiver)
1140 , _method(method)
1141 , _method_handle_invoke_SP_save_opr(LIR_OprFact::illegalOpr)
1142 { assert(is_in_range(code, begin_opJavaCall, end_opJavaCall), "code check"); }
1144 LIR_Opr receiver() const { return _receiver; }
1145 ciMethod* method() const { return _method; }
1147 // JSR 292 support.
1148 bool is_invokedynamic() const { return code() == lir_dynamic_call; }
1149 bool is_method_handle_invoke() const {
1150 return
1151 is_invokedynamic() // An invokedynamic is always a MethodHandle call site.
1152 ||
1153 (method()->holder()->name() == ciSymbol::java_dyn_MethodHandle() &&
1154 methodOopDesc::is_method_handle_invoke_name(method()->name()->sid()));
1155 }
1157 intptr_t vtable_offset() const {
1158 assert(_code == lir_virtual_call, "only have vtable for real vcall");
1159 return (intptr_t) addr();
1160 }
1162 virtual void emit_code(LIR_Assembler* masm);
1163 virtual LIR_OpJavaCall* as_OpJavaCall() { return this; }
1164 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1165 };
1167 // --------------------------------------------------
1168 // LIR_OpLabel
1169 // --------------------------------------------------
1170 // Location where a branch can continue
1171 class LIR_OpLabel: public LIR_Op {
1172 friend class LIR_OpVisitState;
1174 private:
1175 Label* _label;
1176 public:
1177 LIR_OpLabel(Label* lbl)
1178 : LIR_Op(lir_label, LIR_OprFact::illegalOpr, NULL)
1179 , _label(lbl) {}
1180 Label* label() const { return _label; }
1182 virtual void emit_code(LIR_Assembler* masm);
1183 virtual LIR_OpLabel* as_OpLabel() { return this; }
1184 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1185 };
1187 // LIR_OpArrayCopy
1188 class LIR_OpArrayCopy: public LIR_Op {
1189 friend class LIR_OpVisitState;
1191 private:
1192 ArrayCopyStub* _stub;
1193 LIR_Opr _src;
1194 LIR_Opr _src_pos;
1195 LIR_Opr _dst;
1196 LIR_Opr _dst_pos;
1197 LIR_Opr _length;
1198 LIR_Opr _tmp;
1199 ciArrayKlass* _expected_type;
1200 int _flags;
1202 public:
1203 enum Flags {
1204 src_null_check = 1 << 0,
1205 dst_null_check = 1 << 1,
1206 src_pos_positive_check = 1 << 2,
1207 dst_pos_positive_check = 1 << 3,
1208 length_positive_check = 1 << 4,
1209 src_range_check = 1 << 5,
1210 dst_range_check = 1 << 6,
1211 type_check = 1 << 7,
1212 all_flags = (1 << 8) - 1
1213 };
1215 LIR_OpArrayCopy(LIR_Opr src, LIR_Opr src_pos, LIR_Opr dst, LIR_Opr dst_pos, LIR_Opr length, LIR_Opr tmp,
1216 ciArrayKlass* expected_type, int flags, CodeEmitInfo* info);
1218 LIR_Opr src() const { return _src; }
1219 LIR_Opr src_pos() const { return _src_pos; }
1220 LIR_Opr dst() const { return _dst; }
1221 LIR_Opr dst_pos() const { return _dst_pos; }
1222 LIR_Opr length() const { return _length; }
1223 LIR_Opr tmp() const { return _tmp; }
1224 int flags() const { return _flags; }
1225 ciArrayKlass* expected_type() const { return _expected_type; }
1226 ArrayCopyStub* stub() const { return _stub; }
1228 virtual void emit_code(LIR_Assembler* masm);
1229 virtual LIR_OpArrayCopy* as_OpArrayCopy() { return this; }
1230 void print_instr(outputStream* out) const PRODUCT_RETURN;
1231 };
1234 // --------------------------------------------------
1235 // LIR_Op0
1236 // --------------------------------------------------
1237 class LIR_Op0: public LIR_Op {
1238 friend class LIR_OpVisitState;
1240 public:
1241 LIR_Op0(LIR_Code code)
1242 : LIR_Op(code, LIR_OprFact::illegalOpr, NULL) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1243 LIR_Op0(LIR_Code code, LIR_Opr result, CodeEmitInfo* info = NULL)
1244 : LIR_Op(code, result, info) { assert(is_in_range(code, begin_op0, end_op0), "code check"); }
1246 virtual void emit_code(LIR_Assembler* masm);
1247 virtual LIR_Op0* as_Op0() { return this; }
1248 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1249 };
1252 // --------------------------------------------------
1253 // LIR_Op1
1254 // --------------------------------------------------
1256 class LIR_Op1: public LIR_Op {
1257 friend class LIR_OpVisitState;
1259 protected:
1260 LIR_Opr _opr; // input operand
1261 BasicType _type; // Operand types
1262 LIR_PatchCode _patch; // only required with patchin (NEEDS_CLEANUP: do we want a special instruction for patching?)
1264 static void print_patch_code(outputStream* out, LIR_PatchCode code);
1266 void set_kind(LIR_MoveKind kind) {
1267 assert(code() == lir_move, "must be");
1268 _flags = kind;
1269 }
1271 public:
1272 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)
1273 : LIR_Op(code, result, info)
1274 , _opr(opr)
1275 , _patch(patch)
1276 , _type(type) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1278 LIR_Op1(LIR_Code code, LIR_Opr opr, LIR_Opr result, BasicType type, LIR_PatchCode patch, CodeEmitInfo* info, LIR_MoveKind kind)
1279 : LIR_Op(code, result, info)
1280 , _opr(opr)
1281 , _patch(patch)
1282 , _type(type) {
1283 assert(code == lir_move, "must be");
1284 set_kind(kind);
1285 }
1287 LIR_Op1(LIR_Code code, LIR_Opr opr, CodeEmitInfo* info)
1288 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1289 , _opr(opr)
1290 , _patch(lir_patch_none)
1291 , _type(T_ILLEGAL) { assert(is_in_range(code, begin_op1, end_op1), "code check"); }
1293 LIR_Opr in_opr() const { return _opr; }
1294 LIR_PatchCode patch_code() const { return _patch; }
1295 BasicType type() const { return _type; }
1297 LIR_MoveKind move_kind() const {
1298 assert(code() == lir_move, "must be");
1299 return (LIR_MoveKind)_flags;
1300 }
1302 virtual void emit_code(LIR_Assembler* masm);
1303 virtual LIR_Op1* as_Op1() { return this; }
1304 virtual const char * name() const PRODUCT_RETURN0;
1306 void set_in_opr(LIR_Opr opr) { _opr = opr; }
1308 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1309 virtual void verify() const;
1310 };
1313 // for runtime calls
1314 class LIR_OpRTCall: public LIR_OpCall {
1315 friend class LIR_OpVisitState;
1317 private:
1318 LIR_Opr _tmp;
1319 public:
1320 LIR_OpRTCall(address addr, LIR_Opr tmp,
1321 LIR_Opr result, LIR_OprList* arguments, CodeEmitInfo* info = NULL)
1322 : LIR_OpCall(lir_rtcall, addr, result, arguments, info)
1323 , _tmp(tmp) {}
1325 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1326 virtual void emit_code(LIR_Assembler* masm);
1327 virtual LIR_OpRTCall* as_OpRTCall() { return this; }
1329 LIR_Opr tmp() const { return _tmp; }
1331 virtual void verify() const;
1332 };
1335 class LIR_OpBranch: public LIR_Op {
1336 friend class LIR_OpVisitState;
1338 private:
1339 LIR_Condition _cond;
1340 BasicType _type;
1341 Label* _label;
1342 BlockBegin* _block; // if this is a branch to a block, this is the block
1343 BlockBegin* _ublock; // if this is a float-branch, this is the unorderd block
1344 CodeStub* _stub; // if this is a branch to a stub, this is the stub
1346 public:
1347 LIR_OpBranch(LIR_Condition cond, Label* lbl)
1348 : LIR_Op(lir_branch, LIR_OprFact::illegalOpr, (CodeEmitInfo*) NULL)
1349 , _cond(cond)
1350 , _label(lbl)
1351 , _block(NULL)
1352 , _ublock(NULL)
1353 , _stub(NULL) { }
1355 LIR_OpBranch(LIR_Condition cond, BasicType type, BlockBegin* block);
1356 LIR_OpBranch(LIR_Condition cond, BasicType type, CodeStub* stub);
1358 // for unordered comparisons
1359 LIR_OpBranch(LIR_Condition cond, BasicType type, BlockBegin* block, BlockBegin* ublock);
1361 LIR_Condition cond() const { return _cond; }
1362 BasicType type() const { return _type; }
1363 Label* label() const { return _label; }
1364 BlockBegin* block() const { return _block; }
1365 BlockBegin* ublock() const { return _ublock; }
1366 CodeStub* stub() const { return _stub; }
1368 void change_block(BlockBegin* b);
1369 void change_ublock(BlockBegin* b);
1370 void negate_cond();
1372 virtual void emit_code(LIR_Assembler* masm);
1373 virtual LIR_OpBranch* as_OpBranch() { return this; }
1374 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1375 };
1378 class ConversionStub;
1380 class LIR_OpConvert: public LIR_Op1 {
1381 friend class LIR_OpVisitState;
1383 private:
1384 Bytecodes::Code _bytecode;
1385 ConversionStub* _stub;
1386 #ifdef PPC
1387 LIR_Opr _tmp1;
1388 LIR_Opr _tmp2;
1389 #endif
1391 public:
1392 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub)
1393 : LIR_Op1(lir_convert, opr, result)
1394 , _stub(stub)
1395 #ifdef PPC
1396 , _tmp1(LIR_OprDesc::illegalOpr())
1397 , _tmp2(LIR_OprDesc::illegalOpr())
1398 #endif
1399 , _bytecode(code) {}
1401 #ifdef PPC
1402 LIR_OpConvert(Bytecodes::Code code, LIR_Opr opr, LIR_Opr result, ConversionStub* stub
1403 ,LIR_Opr tmp1, LIR_Opr tmp2)
1404 : LIR_Op1(lir_convert, opr, result)
1405 , _stub(stub)
1406 , _tmp1(tmp1)
1407 , _tmp2(tmp2)
1408 , _bytecode(code) {}
1409 #endif
1411 Bytecodes::Code bytecode() const { return _bytecode; }
1412 ConversionStub* stub() const { return _stub; }
1413 #ifdef PPC
1414 LIR_Opr tmp1() const { return _tmp1; }
1415 LIR_Opr tmp2() const { return _tmp2; }
1416 #endif
1418 virtual void emit_code(LIR_Assembler* masm);
1419 virtual LIR_OpConvert* as_OpConvert() { return this; }
1420 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1422 static void print_bytecode(outputStream* out, Bytecodes::Code code) PRODUCT_RETURN;
1423 };
1426 // LIR_OpAllocObj
1427 class LIR_OpAllocObj : public LIR_Op1 {
1428 friend class LIR_OpVisitState;
1430 private:
1431 LIR_Opr _tmp1;
1432 LIR_Opr _tmp2;
1433 LIR_Opr _tmp3;
1434 LIR_Opr _tmp4;
1435 int _hdr_size;
1436 int _obj_size;
1437 CodeStub* _stub;
1438 bool _init_check;
1440 public:
1441 LIR_OpAllocObj(LIR_Opr klass, LIR_Opr result,
1442 LIR_Opr t1, LIR_Opr t2, LIR_Opr t3, LIR_Opr t4,
1443 int hdr_size, int obj_size, bool init_check, CodeStub* stub)
1444 : LIR_Op1(lir_alloc_object, klass, result)
1445 , _tmp1(t1)
1446 , _tmp2(t2)
1447 , _tmp3(t3)
1448 , _tmp4(t4)
1449 , _hdr_size(hdr_size)
1450 , _obj_size(obj_size)
1451 , _init_check(init_check)
1452 , _stub(stub) { }
1454 LIR_Opr klass() const { return in_opr(); }
1455 LIR_Opr obj() const { return result_opr(); }
1456 LIR_Opr tmp1() const { return _tmp1; }
1457 LIR_Opr tmp2() const { return _tmp2; }
1458 LIR_Opr tmp3() const { return _tmp3; }
1459 LIR_Opr tmp4() const { return _tmp4; }
1460 int header_size() const { return _hdr_size; }
1461 int object_size() const { return _obj_size; }
1462 bool init_check() const { return _init_check; }
1463 CodeStub* stub() const { return _stub; }
1465 virtual void emit_code(LIR_Assembler* masm);
1466 virtual LIR_OpAllocObj * as_OpAllocObj () { return this; }
1467 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1468 };
1471 // LIR_OpRoundFP
1472 class LIR_OpRoundFP : public LIR_Op1 {
1473 friend class LIR_OpVisitState;
1475 private:
1476 LIR_Opr _tmp;
1478 public:
1479 LIR_OpRoundFP(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result)
1480 : LIR_Op1(lir_roundfp, reg, result)
1481 , _tmp(stack_loc_temp) {}
1483 LIR_Opr tmp() const { return _tmp; }
1484 virtual LIR_OpRoundFP* as_OpRoundFP() { return this; }
1485 void print_instr(outputStream* out) const PRODUCT_RETURN;
1486 };
1488 // LIR_OpTypeCheck
1489 class LIR_OpTypeCheck: public LIR_Op {
1490 friend class LIR_OpVisitState;
1492 private:
1493 LIR_Opr _object;
1494 LIR_Opr _array;
1495 ciKlass* _klass;
1496 LIR_Opr _tmp1;
1497 LIR_Opr _tmp2;
1498 LIR_Opr _tmp3;
1499 bool _fast_check;
1500 CodeEmitInfo* _info_for_patch;
1501 CodeEmitInfo* _info_for_exception;
1502 CodeStub* _stub;
1503 ciMethod* _profiled_method;
1504 int _profiled_bci;
1505 bool _should_profile;
1507 public:
1508 LIR_OpTypeCheck(LIR_Code code, LIR_Opr result, LIR_Opr object, ciKlass* klass,
1509 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
1510 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub);
1511 LIR_OpTypeCheck(LIR_Code code, LIR_Opr object, LIR_Opr array,
1512 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception);
1514 LIR_Opr object() const { return _object; }
1515 LIR_Opr array() const { assert(code() == lir_store_check, "not valid"); return _array; }
1516 LIR_Opr tmp1() const { return _tmp1; }
1517 LIR_Opr tmp2() const { return _tmp2; }
1518 LIR_Opr tmp3() const { return _tmp3; }
1519 ciKlass* klass() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _klass; }
1520 bool fast_check() const { assert(code() == lir_instanceof || code() == lir_checkcast, "not valid"); return _fast_check; }
1521 CodeEmitInfo* info_for_patch() const { return _info_for_patch; }
1522 CodeEmitInfo* info_for_exception() const { return _info_for_exception; }
1523 CodeStub* stub() const { return _stub; }
1525 // methodDataOop profiling
1526 void set_profiled_method(ciMethod *method) { _profiled_method = method; }
1527 void set_profiled_bci(int bci) { _profiled_bci = bci; }
1528 void set_should_profile(bool b) { _should_profile = b; }
1529 ciMethod* profiled_method() const { return _profiled_method; }
1530 int profiled_bci() const { return _profiled_bci; }
1531 bool should_profile() const { return _should_profile; }
1533 virtual void emit_code(LIR_Assembler* masm);
1534 virtual LIR_OpTypeCheck* as_OpTypeCheck() { return this; }
1535 void print_instr(outputStream* out) const PRODUCT_RETURN;
1536 };
1538 // LIR_Op2
1539 class LIR_Op2: public LIR_Op {
1540 friend class LIR_OpVisitState;
1542 int _fpu_stack_size; // for sin/cos implementation on Intel
1544 protected:
1545 LIR_Opr _opr1;
1546 LIR_Opr _opr2;
1547 BasicType _type;
1548 LIR_Opr _tmp;
1549 LIR_Condition _condition;
1551 void verify() const;
1553 public:
1554 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, CodeEmitInfo* info = NULL)
1555 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1556 , _opr1(opr1)
1557 , _opr2(opr2)
1558 , _type(T_ILLEGAL)
1559 , _condition(condition)
1560 , _fpu_stack_size(0)
1561 , _tmp(LIR_OprFact::illegalOpr) {
1562 assert(code == lir_cmp, "code check");
1563 }
1565 LIR_Op2(LIR_Code code, LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result)
1566 : LIR_Op(code, result, NULL)
1567 , _opr1(opr1)
1568 , _opr2(opr2)
1569 , _type(T_ILLEGAL)
1570 , _condition(condition)
1571 , _fpu_stack_size(0)
1572 , _tmp(LIR_OprFact::illegalOpr) {
1573 assert(code == lir_cmove, "code check");
1574 }
1576 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result = LIR_OprFact::illegalOpr,
1577 CodeEmitInfo* info = NULL, BasicType type = T_ILLEGAL)
1578 : LIR_Op(code, result, info)
1579 , _opr1(opr1)
1580 , _opr2(opr2)
1581 , _type(type)
1582 , _condition(lir_cond_unknown)
1583 , _fpu_stack_size(0)
1584 , _tmp(LIR_OprFact::illegalOpr) {
1585 assert(code != lir_cmp && is_in_range(code, begin_op2, end_op2), "code check");
1586 }
1588 LIR_Op2(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, LIR_Opr tmp)
1589 : LIR_Op(code, result, NULL)
1590 , _opr1(opr1)
1591 , _opr2(opr2)
1592 , _type(T_ILLEGAL)
1593 , _condition(lir_cond_unknown)
1594 , _fpu_stack_size(0)
1595 , _tmp(tmp) {
1596 assert(code != lir_cmp && is_in_range(code, begin_op2, end_op2), "code check");
1597 }
1599 LIR_Opr in_opr1() const { return _opr1; }
1600 LIR_Opr in_opr2() const { return _opr2; }
1601 BasicType type() const { return _type; }
1602 LIR_Opr tmp_opr() const { return _tmp; }
1603 LIR_Condition condition() const {
1604 assert(code() == lir_cmp || code() == lir_cmove, "only valid for cmp and cmove"); return _condition;
1605 }
1606 void set_condition(LIR_Condition condition) {
1607 assert(code() == lir_cmp || code() == lir_cmove, "only valid for cmp and cmove"); _condition = condition;
1608 }
1610 void set_fpu_stack_size(int size) { _fpu_stack_size = size; }
1611 int fpu_stack_size() const { return _fpu_stack_size; }
1613 void set_in_opr1(LIR_Opr opr) { _opr1 = opr; }
1614 void set_in_opr2(LIR_Opr opr) { _opr2 = opr; }
1616 virtual void emit_code(LIR_Assembler* masm);
1617 virtual LIR_Op2* as_Op2() { return this; }
1618 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1619 };
1621 class LIR_OpAllocArray : public LIR_Op {
1622 friend class LIR_OpVisitState;
1624 private:
1625 LIR_Opr _klass;
1626 LIR_Opr _len;
1627 LIR_Opr _tmp1;
1628 LIR_Opr _tmp2;
1629 LIR_Opr _tmp3;
1630 LIR_Opr _tmp4;
1631 BasicType _type;
1632 CodeStub* _stub;
1634 public:
1635 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)
1636 : LIR_Op(lir_alloc_array, result, NULL)
1637 , _klass(klass)
1638 , _len(len)
1639 , _tmp1(t1)
1640 , _tmp2(t2)
1641 , _tmp3(t3)
1642 , _tmp4(t4)
1643 , _type(type)
1644 , _stub(stub) {}
1646 LIR_Opr klass() const { return _klass; }
1647 LIR_Opr len() const { return _len; }
1648 LIR_Opr obj() const { return result_opr(); }
1649 LIR_Opr tmp1() const { return _tmp1; }
1650 LIR_Opr tmp2() const { return _tmp2; }
1651 LIR_Opr tmp3() const { return _tmp3; }
1652 LIR_Opr tmp4() const { return _tmp4; }
1653 BasicType type() const { return _type; }
1654 CodeStub* stub() const { return _stub; }
1656 virtual void emit_code(LIR_Assembler* masm);
1657 virtual LIR_OpAllocArray * as_OpAllocArray () { return this; }
1658 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1659 };
1662 class LIR_Op3: public LIR_Op {
1663 friend class LIR_OpVisitState;
1665 private:
1666 LIR_Opr _opr1;
1667 LIR_Opr _opr2;
1668 LIR_Opr _opr3;
1669 public:
1670 LIR_Op3(LIR_Code code, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr opr3, LIR_Opr result, CodeEmitInfo* info = NULL)
1671 : LIR_Op(code, result, info)
1672 , _opr1(opr1)
1673 , _opr2(opr2)
1674 , _opr3(opr3) { assert(is_in_range(code, begin_op3, end_op3), "code check"); }
1675 LIR_Opr in_opr1() const { return _opr1; }
1676 LIR_Opr in_opr2() const { return _opr2; }
1677 LIR_Opr in_opr3() const { return _opr3; }
1679 virtual void emit_code(LIR_Assembler* masm);
1680 virtual LIR_Op3* as_Op3() { return this; }
1681 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1682 };
1685 //--------------------------------
1686 class LabelObj: public CompilationResourceObj {
1687 private:
1688 Label _label;
1689 public:
1690 LabelObj() {}
1691 Label* label() { return &_label; }
1692 };
1695 class LIR_OpLock: public LIR_Op {
1696 friend class LIR_OpVisitState;
1698 private:
1699 LIR_Opr _hdr;
1700 LIR_Opr _obj;
1701 LIR_Opr _lock;
1702 LIR_Opr _scratch;
1703 CodeStub* _stub;
1704 public:
1705 LIR_OpLock(LIR_Code code, LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info)
1706 : LIR_Op(code, LIR_OprFact::illegalOpr, info)
1707 , _hdr(hdr)
1708 , _obj(obj)
1709 , _lock(lock)
1710 , _scratch(scratch)
1711 , _stub(stub) {}
1713 LIR_Opr hdr_opr() const { return _hdr; }
1714 LIR_Opr obj_opr() const { return _obj; }
1715 LIR_Opr lock_opr() const { return _lock; }
1716 LIR_Opr scratch_opr() const { return _scratch; }
1717 CodeStub* stub() const { return _stub; }
1719 virtual void emit_code(LIR_Assembler* masm);
1720 virtual LIR_OpLock* as_OpLock() { return this; }
1721 void print_instr(outputStream* out) const PRODUCT_RETURN;
1722 };
1725 class LIR_OpDelay: public LIR_Op {
1726 friend class LIR_OpVisitState;
1728 private:
1729 LIR_Op* _op;
1731 public:
1732 LIR_OpDelay(LIR_Op* op, CodeEmitInfo* info):
1733 LIR_Op(lir_delay_slot, LIR_OprFact::illegalOpr, info),
1734 _op(op) {
1735 assert(op->code() == lir_nop || LIRFillDelaySlots, "should be filling with nops");
1736 }
1737 virtual void emit_code(LIR_Assembler* masm);
1738 virtual LIR_OpDelay* as_OpDelay() { return this; }
1739 void print_instr(outputStream* out) const PRODUCT_RETURN;
1740 LIR_Op* delay_op() const { return _op; }
1741 CodeEmitInfo* call_info() const { return info(); }
1742 };
1745 // LIR_OpCompareAndSwap
1746 class LIR_OpCompareAndSwap : public LIR_Op {
1747 friend class LIR_OpVisitState;
1749 private:
1750 LIR_Opr _addr;
1751 LIR_Opr _cmp_value;
1752 LIR_Opr _new_value;
1753 LIR_Opr _tmp1;
1754 LIR_Opr _tmp2;
1756 public:
1757 LIR_OpCompareAndSwap(LIR_Code code, LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1758 LIR_Opr t1, LIR_Opr t2, LIR_Opr result)
1759 : LIR_Op(code, result, NULL) // no result, no info
1760 , _addr(addr)
1761 , _cmp_value(cmp_value)
1762 , _new_value(new_value)
1763 , _tmp1(t1)
1764 , _tmp2(t2) { }
1766 LIR_Opr addr() const { return _addr; }
1767 LIR_Opr cmp_value() const { return _cmp_value; }
1768 LIR_Opr new_value() const { return _new_value; }
1769 LIR_Opr tmp1() const { return _tmp1; }
1770 LIR_Opr tmp2() const { return _tmp2; }
1772 virtual void emit_code(LIR_Assembler* masm);
1773 virtual LIR_OpCompareAndSwap * as_OpCompareAndSwap () { return this; }
1774 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1775 };
1777 // LIR_OpProfileCall
1778 class LIR_OpProfileCall : public LIR_Op {
1779 friend class LIR_OpVisitState;
1781 private:
1782 ciMethod* _profiled_method;
1783 int _profiled_bci;
1784 LIR_Opr _mdo;
1785 LIR_Opr _recv;
1786 LIR_Opr _tmp1;
1787 ciKlass* _known_holder;
1789 public:
1790 // Destroys recv
1791 LIR_OpProfileCall(LIR_Code code, ciMethod* profiled_method, int profiled_bci, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* known_holder)
1792 : LIR_Op(code, LIR_OprFact::illegalOpr, NULL) // no result, no info
1793 , _profiled_method(profiled_method)
1794 , _profiled_bci(profiled_bci)
1795 , _mdo(mdo)
1796 , _recv(recv)
1797 , _tmp1(t1)
1798 , _known_holder(known_holder) { }
1800 ciMethod* profiled_method() const { return _profiled_method; }
1801 int profiled_bci() const { return _profiled_bci; }
1802 LIR_Opr mdo() const { return _mdo; }
1803 LIR_Opr recv() const { return _recv; }
1804 LIR_Opr tmp1() const { return _tmp1; }
1805 ciKlass* known_holder() const { return _known_holder; }
1807 virtual void emit_code(LIR_Assembler* masm);
1808 virtual LIR_OpProfileCall* as_OpProfileCall() { return this; }
1809 virtual void print_instr(outputStream* out) const PRODUCT_RETURN;
1810 };
1812 class LIR_InsertionBuffer;
1814 //--------------------------------LIR_List---------------------------------------------------
1815 // Maintains a list of LIR instructions (one instance of LIR_List per basic block)
1816 // The LIR instructions are appended by the LIR_List class itself;
1817 //
1818 // Notes:
1819 // - all offsets are(should be) in bytes
1820 // - local positions are specified with an offset, with offset 0 being local 0
1822 class LIR_List: public CompilationResourceObj {
1823 private:
1824 LIR_OpList _operations;
1826 Compilation* _compilation;
1827 #ifndef PRODUCT
1828 BlockBegin* _block;
1829 #endif
1830 #ifdef ASSERT
1831 const char * _file;
1832 int _line;
1833 #endif
1835 void append(LIR_Op* op) {
1836 if (op->source() == NULL)
1837 op->set_source(_compilation->current_instruction());
1838 #ifndef PRODUCT
1839 if (PrintIRWithLIR) {
1840 _compilation->maybe_print_current_instruction();
1841 op->print(); tty->cr();
1842 }
1843 #endif // PRODUCT
1845 _operations.append(op);
1847 #ifdef ASSERT
1848 op->verify();
1849 op->set_file_and_line(_file, _line);
1850 _file = NULL;
1851 _line = 0;
1852 #endif
1853 }
1855 public:
1856 LIR_List(Compilation* compilation, BlockBegin* block = NULL);
1858 #ifdef ASSERT
1859 void set_file_and_line(const char * file, int line);
1860 #endif
1862 //---------- accessors ---------------
1863 LIR_OpList* instructions_list() { return &_operations; }
1864 int length() const { return _operations.length(); }
1865 LIR_Op* at(int i) const { return _operations.at(i); }
1867 NOT_PRODUCT(BlockBegin* block() const { return _block; });
1869 // insert LIR_Ops in buffer to right places in LIR_List
1870 void append(LIR_InsertionBuffer* buffer);
1872 //---------- mutators ---------------
1873 void insert_before(int i, LIR_List* op_list) { _operations.insert_before(i, op_list->instructions_list()); }
1874 void insert_before(int i, LIR_Op* op) { _operations.insert_before(i, op); }
1875 void remove_at(int i) { _operations.remove_at(i); }
1877 //---------- printing -------------
1878 void print_instructions() PRODUCT_RETURN;
1881 //---------- instructions -------------
1882 void call_opt_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
1883 address dest, LIR_OprList* arguments,
1884 CodeEmitInfo* info) {
1885 append(new LIR_OpJavaCall(lir_optvirtual_call, method, receiver, result, dest, arguments, info));
1886 }
1887 void call_static(ciMethod* method, LIR_Opr result,
1888 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
1889 append(new LIR_OpJavaCall(lir_static_call, method, LIR_OprFact::illegalOpr, result, dest, arguments, info));
1890 }
1891 void call_icvirtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
1892 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
1893 append(new LIR_OpJavaCall(lir_icvirtual_call, method, receiver, result, dest, arguments, info));
1894 }
1895 void call_virtual(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
1896 intptr_t vtable_offset, LIR_OprList* arguments, CodeEmitInfo* info) {
1897 append(new LIR_OpJavaCall(lir_virtual_call, method, receiver, result, vtable_offset, arguments, info));
1898 }
1899 void call_dynamic(ciMethod* method, LIR_Opr receiver, LIR_Opr result,
1900 address dest, LIR_OprList* arguments, CodeEmitInfo* info) {
1901 append(new LIR_OpJavaCall(lir_dynamic_call, method, receiver, result, dest, arguments, info));
1902 }
1904 void get_thread(LIR_Opr result) { append(new LIR_Op0(lir_get_thread, result)); }
1905 void word_align() { append(new LIR_Op0(lir_word_align)); }
1906 void membar() { append(new LIR_Op0(lir_membar)); }
1907 void membar_acquire() { append(new LIR_Op0(lir_membar_acquire)); }
1908 void membar_release() { append(new LIR_Op0(lir_membar_release)); }
1910 void nop() { append(new LIR_Op0(lir_nop)); }
1911 void build_frame() { append(new LIR_Op0(lir_build_frame)); }
1913 void std_entry(LIR_Opr receiver) { append(new LIR_Op0(lir_std_entry, receiver)); }
1914 void osr_entry(LIR_Opr osrPointer) { append(new LIR_Op0(lir_osr_entry, osrPointer)); }
1916 void branch_destination(Label* lbl) { append(new LIR_OpLabel(lbl)); }
1918 void negate(LIR_Opr from, LIR_Opr to) { append(new LIR_Op1(lir_neg, from, to)); }
1919 void leal(LIR_Opr from, LIR_Opr result_reg) { append(new LIR_Op1(lir_leal, from, result_reg)); }
1921 // result is a stack location for old backend and vreg for UseLinearScan
1922 // stack_loc_temp is an illegal register for old backend
1923 void roundfp(LIR_Opr reg, LIR_Opr stack_loc_temp, LIR_Opr result) { append(new LIR_OpRoundFP(reg, stack_loc_temp, result)); }
1924 void unaligned_move(LIR_Address* src, LIR_Opr dst) { append(new LIR_Op1(lir_move, LIR_OprFact::address(src), dst, dst->type(), lir_patch_none, NULL, lir_move_unaligned)); }
1925 void unaligned_move(LIR_Opr src, LIR_Address* dst) { append(new LIR_Op1(lir_move, src, LIR_OprFact::address(dst), src->type(), lir_patch_none, NULL, lir_move_unaligned)); }
1926 void unaligned_move(LIR_Opr src, LIR_Opr dst) { append(new LIR_Op1(lir_move, src, dst, dst->type(), lir_patch_none, NULL, lir_move_unaligned)); }
1927 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)); }
1928 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)); }
1929 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)); }
1931 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)); }
1933 void oop2reg (jobject o, LIR_Opr reg) { append(new LIR_Op1(lir_move, LIR_OprFact::oopConst(o), reg)); }
1934 void oop2reg_patch(jobject o, LIR_Opr reg, CodeEmitInfo* info);
1936 void return_op(LIR_Opr result) { append(new LIR_Op1(lir_return, result)); }
1938 void safepoint(LIR_Opr tmp, CodeEmitInfo* info) { append(new LIR_Op1(lir_safepoint, tmp, info)); }
1940 #ifdef PPC
1941 void convert(Bytecodes::Code code, LIR_Opr left, LIR_Opr dst, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_OpConvert(code, left, dst, NULL, tmp1, tmp2)); }
1942 #endif
1943 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)); }
1945 void logical_and (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_and, left, right, dst)); }
1946 void logical_or (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_or, left, right, dst)); }
1947 void logical_xor (LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_logic_xor, left, right, dst)); }
1949 void pack64(LIR_Opr src, LIR_Opr dst) { append(new LIR_Op1(lir_pack64, src, dst, T_LONG, lir_patch_none, NULL)); }
1950 void unpack64(LIR_Opr src, LIR_Opr dst) { append(new LIR_Op1(lir_unpack64, src, dst, T_LONG, lir_patch_none, NULL)); }
1952 void null_check(LIR_Opr opr, CodeEmitInfo* info) { append(new LIR_Op1(lir_null_check, opr, info)); }
1953 void throw_exception(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
1954 append(new LIR_Op2(lir_throw, exceptionPC, exceptionOop, LIR_OprFact::illegalOpr, info));
1955 }
1956 void unwind_exception(LIR_Opr exceptionOop) {
1957 append(new LIR_Op1(lir_unwind, exceptionOop));
1958 }
1960 void compare_to (LIR_Opr left, LIR_Opr right, LIR_Opr dst) {
1961 append(new LIR_Op2(lir_compare_to, left, right, dst));
1962 }
1964 void push(LIR_Opr opr) { append(new LIR_Op1(lir_push, opr)); }
1965 void pop(LIR_Opr reg) { append(new LIR_Op1(lir_pop, reg)); }
1967 void cmp(LIR_Condition condition, LIR_Opr left, LIR_Opr right, CodeEmitInfo* info = NULL) {
1968 append(new LIR_Op2(lir_cmp, condition, left, right, info));
1969 }
1970 void cmp(LIR_Condition condition, LIR_Opr left, int right, CodeEmitInfo* info = NULL) {
1971 cmp(condition, left, LIR_OprFact::intConst(right), info);
1972 }
1974 void cmp_mem_int(LIR_Condition condition, LIR_Opr base, int disp, int c, CodeEmitInfo* info);
1975 void cmp_reg_mem(LIR_Condition condition, LIR_Opr reg, LIR_Address* addr, CodeEmitInfo* info);
1977 void cmove(LIR_Condition condition, LIR_Opr src1, LIR_Opr src2, LIR_Opr dst) {
1978 append(new LIR_Op2(lir_cmove, condition, src1, src2, dst));
1979 }
1981 void cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1982 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
1983 void cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1984 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
1985 void cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
1986 LIR_Opr t1, LIR_Opr t2, LIR_Opr result = LIR_OprFact::illegalOpr);
1988 void abs (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_abs , from, tmp, to)); }
1989 void sqrt(LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_sqrt, from, tmp, to)); }
1990 void log (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_log, from, LIR_OprFact::illegalOpr, to, tmp)); }
1991 void log10 (LIR_Opr from, LIR_Opr to, LIR_Opr tmp) { append(new LIR_Op2(lir_log10, from, LIR_OprFact::illegalOpr, to, tmp)); }
1992 void sin (LIR_Opr from, LIR_Opr to, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_Op2(lir_sin , from, tmp1, to, tmp2)); }
1993 void cos (LIR_Opr from, LIR_Opr to, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_Op2(lir_cos , from, tmp1, to, tmp2)); }
1994 void tan (LIR_Opr from, LIR_Opr to, LIR_Opr tmp1, LIR_Opr tmp2) { append(new LIR_Op2(lir_tan , from, tmp1, to, tmp2)); }
1996 void add (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_add, left, right, res)); }
1997 void sub (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = NULL) { append(new LIR_Op2(lir_sub, left, right, res, info)); }
1998 void mul (LIR_Opr left, LIR_Opr right, LIR_Opr res) { append(new LIR_Op2(lir_mul, left, right, res)); }
1999 void mul_strictfp (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_mul_strictfp, left, right, res, tmp)); }
2000 void div (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = NULL) { append(new LIR_Op2(lir_div, left, right, res, info)); }
2001 void div_strictfp (LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp) { append(new LIR_Op2(lir_div_strictfp, left, right, res, tmp)); }
2002 void rem (LIR_Opr left, LIR_Opr right, LIR_Opr res, CodeEmitInfo* info = NULL) { append(new LIR_Op2(lir_rem, left, right, res, info)); }
2004 void volatile_load_mem_reg(LIR_Address* address, LIR_Opr dst, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2005 void volatile_load_unsafe_reg(LIR_Opr base, LIR_Opr offset, LIR_Opr dst, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2007 void load(LIR_Address* addr, LIR_Opr src, CodeEmitInfo* info = NULL, LIR_PatchCode patch_code = lir_patch_none);
2009 void prefetch(LIR_Address* addr, bool is_store);
2011 void store_mem_int(jint v, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2012 void store_mem_oop(jobject o, LIR_Opr base, int offset_in_bytes, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2013 void store(LIR_Opr src, LIR_Address* addr, CodeEmitInfo* info = NULL, LIR_PatchCode patch_code = lir_patch_none);
2014 void volatile_store_mem_reg(LIR_Opr src, LIR_Address* address, CodeEmitInfo* info, LIR_PatchCode patch_code = lir_patch_none);
2015 void volatile_store_unsafe_reg(LIR_Opr src, LIR_Opr base, LIR_Opr offset, BasicType type, CodeEmitInfo* info, LIR_PatchCode patch_code);
2017 void idiv(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2018 void idiv(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2019 void irem(LIR_Opr left, LIR_Opr right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2020 void irem(LIR_Opr left, int right, LIR_Opr res, LIR_Opr tmp, CodeEmitInfo* info);
2022 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);
2023 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);
2025 // jump is an unconditional branch
2026 void jump(BlockBegin* block) {
2027 append(new LIR_OpBranch(lir_cond_always, T_ILLEGAL, block));
2028 }
2029 void jump(CodeStub* stub) {
2030 append(new LIR_OpBranch(lir_cond_always, T_ILLEGAL, stub));
2031 }
2032 void branch(LIR_Condition cond, Label* lbl) { append(new LIR_OpBranch(cond, lbl)); }
2033 void branch(LIR_Condition cond, BasicType type, BlockBegin* block) {
2034 assert(type != T_FLOAT && type != T_DOUBLE, "no fp comparisons");
2035 append(new LIR_OpBranch(cond, type, block));
2036 }
2037 void branch(LIR_Condition cond, BasicType type, CodeStub* stub) {
2038 assert(type != T_FLOAT && type != T_DOUBLE, "no fp comparisons");
2039 append(new LIR_OpBranch(cond, type, stub));
2040 }
2041 void branch(LIR_Condition cond, BasicType type, BlockBegin* block, BlockBegin* unordered) {
2042 assert(type == T_FLOAT || type == T_DOUBLE, "fp comparisons only");
2043 append(new LIR_OpBranch(cond, type, block, unordered));
2044 }
2046 void shift_left(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2047 void shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2048 void unsigned_shift_right(LIR_Opr value, LIR_Opr count, LIR_Opr dst, LIR_Opr tmp);
2050 void shift_left(LIR_Opr value, int count, LIR_Opr dst) { shift_left(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2051 void shift_right(LIR_Opr value, int count, LIR_Opr dst) { shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2052 void unsigned_shift_right(LIR_Opr value, int count, LIR_Opr dst) { unsigned_shift_right(value, LIR_OprFact::intConst(count), dst, LIR_OprFact::illegalOpr); }
2054 void lcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst) { append(new LIR_Op2(lir_cmp_l2i, left, right, dst)); }
2055 void fcmp2int(LIR_Opr left, LIR_Opr right, LIR_Opr dst, bool is_unordered_less);
2057 void call_runtime_leaf(address routine, LIR_Opr tmp, LIR_Opr result, LIR_OprList* arguments) {
2058 append(new LIR_OpRTCall(routine, tmp, result, arguments));
2059 }
2061 void call_runtime(address routine, LIR_Opr tmp, LIR_Opr result,
2062 LIR_OprList* arguments, CodeEmitInfo* info) {
2063 append(new LIR_OpRTCall(routine, tmp, result, arguments, info));
2064 }
2066 void load_stack_address_monitor(int monitor_ix, LIR_Opr dst) { append(new LIR_Op1(lir_monaddr, LIR_OprFact::intConst(monitor_ix), dst)); }
2067 void unlock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub);
2068 void lock_object(LIR_Opr hdr, LIR_Opr obj, LIR_Opr lock, LIR_Opr scratch, CodeStub* stub, CodeEmitInfo* info);
2070 void set_24bit_fpu() { append(new LIR_Op0(lir_24bit_FPU )); }
2071 void restore_fpu() { append(new LIR_Op0(lir_reset_FPU )); }
2072 void breakpoint() { append(new LIR_Op0(lir_breakpoint)); }
2074 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)); }
2076 void fpop_raw() { append(new LIR_Op0(lir_fpop_raw)); }
2078 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);
2079 void store_check(LIR_Opr object, LIR_Opr array, LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, CodeEmitInfo* info_for_exception);
2081 void checkcast (LIR_Opr result, LIR_Opr object, ciKlass* klass,
2082 LIR_Opr tmp1, LIR_Opr tmp2, LIR_Opr tmp3, bool fast_check,
2083 CodeEmitInfo* info_for_exception, CodeEmitInfo* info_for_patch, CodeStub* stub,
2084 ciMethod* profiled_method, int profiled_bci);
2085 // methodDataOop profiling
2086 void profile_call(ciMethod* method, int bci, LIR_Opr mdo, LIR_Opr recv, LIR_Opr t1, ciKlass* cha_klass) {
2087 append(new LIR_OpProfileCall(lir_profile_call, method, bci, mdo, recv, t1, cha_klass));
2088 }
2089 };
2091 void print_LIR(BlockList* blocks);
2093 class LIR_InsertionBuffer : public CompilationResourceObj {
2094 private:
2095 LIR_List* _lir; // the lir list where ops of this buffer should be inserted later (NULL when uninitialized)
2097 // list of insertion points. index and count are stored alternately:
2098 // _index_and_count[i * 2]: the index into lir list where "count" ops should be inserted
2099 // _index_and_count[i * 2 + 1]: the number of ops to be inserted at index
2100 intStack _index_and_count;
2102 // the LIR_Ops to be inserted
2103 LIR_OpList _ops;
2105 void append_new(int index, int count) { _index_and_count.append(index); _index_and_count.append(count); }
2106 void set_index_at(int i, int value) { _index_and_count.at_put((i << 1), value); }
2107 void set_count_at(int i, int value) { _index_and_count.at_put((i << 1) + 1, value); }
2109 #ifdef ASSERT
2110 void verify();
2111 #endif
2112 public:
2113 LIR_InsertionBuffer() : _lir(NULL), _index_and_count(8), _ops(8) { }
2115 // must be called before using the insertion buffer
2116 void init(LIR_List* lir) { assert(!initialized(), "already initialized"); _lir = lir; _index_and_count.clear(); _ops.clear(); }
2117 bool initialized() const { return _lir != NULL; }
2118 // called automatically when the buffer is appended to the LIR_List
2119 void finish() { _lir = NULL; }
2121 // accessors
2122 LIR_List* lir_list() const { return _lir; }
2123 int number_of_insertion_points() const { return _index_and_count.length() >> 1; }
2124 int index_at(int i) const { return _index_and_count.at((i << 1)); }
2125 int count_at(int i) const { return _index_and_count.at((i << 1) + 1); }
2127 int number_of_ops() const { return _ops.length(); }
2128 LIR_Op* op_at(int i) const { return _ops.at(i); }
2130 // append an instruction to the buffer
2131 void append(int index, LIR_Op* op);
2133 // instruction
2134 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)); }
2135 };
2138 //
2139 // LIR_OpVisitState is used for manipulating LIR_Ops in an abstract way.
2140 // Calling a LIR_Op's visit function with a LIR_OpVisitState causes
2141 // information about the input, output and temporaries used by the
2142 // op to be recorded. It also records whether the op has call semantics
2143 // and also records all the CodeEmitInfos used by this op.
2144 //
2147 class LIR_OpVisitState: public StackObj {
2148 public:
2149 typedef enum { inputMode, firstMode = inputMode, tempMode, outputMode, numModes, invalidMode = -1 } OprMode;
2151 enum {
2152 maxNumberOfOperands = 16,
2153 maxNumberOfInfos = 4
2154 };
2156 private:
2157 LIR_Op* _op;
2159 // optimization: the operands and infos are not stored in a variable-length
2160 // list, but in a fixed-size array to save time of size checks and resizing
2161 int _oprs_len[numModes];
2162 LIR_Opr* _oprs_new[numModes][maxNumberOfOperands];
2163 int _info_len;
2164 CodeEmitInfo* _info_new[maxNumberOfInfos];
2166 bool _has_call;
2167 bool _has_slow_case;
2170 // only include register operands
2171 // addresses are decomposed to the base and index registers
2172 // constants and stack operands are ignored
2173 void append(LIR_Opr& opr, OprMode mode) {
2174 assert(opr->is_valid(), "should not call this otherwise");
2175 assert(mode >= 0 && mode < numModes, "bad mode");
2177 if (opr->is_register()) {
2178 assert(_oprs_len[mode] < maxNumberOfOperands, "array overflow");
2179 _oprs_new[mode][_oprs_len[mode]++] = &opr;
2181 } else if (opr->is_pointer()) {
2182 LIR_Address* address = opr->as_address_ptr();
2183 if (address != NULL) {
2184 // special handling for addresses: add base and index register of the address
2185 // both are always input operands!
2186 if (address->_base->is_valid()) {
2187 assert(address->_base->is_register(), "must be");
2188 assert(_oprs_len[inputMode] < maxNumberOfOperands, "array overflow");
2189 _oprs_new[inputMode][_oprs_len[inputMode]++] = &address->_base;
2190 }
2191 if (address->_index->is_valid()) {
2192 assert(address->_index->is_register(), "must be");
2193 assert(_oprs_len[inputMode] < maxNumberOfOperands, "array overflow");
2194 _oprs_new[inputMode][_oprs_len[inputMode]++] = &address->_index;
2195 }
2197 } else {
2198 assert(opr->is_constant(), "constant operands are not processed");
2199 }
2200 } else {
2201 assert(opr->is_stack(), "stack operands are not processed");
2202 }
2203 }
2205 void append(CodeEmitInfo* info) {
2206 assert(info != NULL, "should not call this otherwise");
2207 assert(_info_len < maxNumberOfInfos, "array overflow");
2208 _info_new[_info_len++] = info;
2209 }
2211 public:
2212 LIR_OpVisitState() { reset(); }
2214 LIR_Op* op() const { return _op; }
2215 void set_op(LIR_Op* op) { reset(); _op = op; }
2217 bool has_call() const { return _has_call; }
2218 bool has_slow_case() const { return _has_slow_case; }
2220 void reset() {
2221 _op = NULL;
2222 _has_call = false;
2223 _has_slow_case = false;
2225 _oprs_len[inputMode] = 0;
2226 _oprs_len[tempMode] = 0;
2227 _oprs_len[outputMode] = 0;
2228 _info_len = 0;
2229 }
2232 int opr_count(OprMode mode) const {
2233 assert(mode >= 0 && mode < numModes, "bad mode");
2234 return _oprs_len[mode];
2235 }
2237 LIR_Opr opr_at(OprMode mode, int index) const {
2238 assert(mode >= 0 && mode < numModes, "bad mode");
2239 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2240 return *_oprs_new[mode][index];
2241 }
2243 void set_opr_at(OprMode mode, int index, LIR_Opr opr) const {
2244 assert(mode >= 0 && mode < numModes, "bad mode");
2245 assert(index >= 0 && index < _oprs_len[mode], "index out of bound");
2246 *_oprs_new[mode][index] = opr;
2247 }
2249 int info_count() const {
2250 return _info_len;
2251 }
2253 CodeEmitInfo* info_at(int index) const {
2254 assert(index < _info_len, "index out of bounds");
2255 return _info_new[index];
2256 }
2258 XHandlers* all_xhandler();
2260 // collects all register operands of the instruction
2261 void visit(LIR_Op* op);
2263 #if ASSERT
2264 // check that an operation has no operands
2265 bool no_operands(LIR_Op* op);
2266 #endif
2268 // LIR_Op visitor functions use these to fill in the state
2269 void do_input(LIR_Opr& opr) { append(opr, LIR_OpVisitState::inputMode); }
2270 void do_output(LIR_Opr& opr) { append(opr, LIR_OpVisitState::outputMode); }
2271 void do_temp(LIR_Opr& opr) { append(opr, LIR_OpVisitState::tempMode); }
2272 void do_info(CodeEmitInfo* info) { append(info); }
2274 void do_stub(CodeStub* stub);
2275 void do_call() { _has_call = true; }
2276 void do_slow_case() { _has_slow_case = true; }
2277 void do_slow_case(CodeEmitInfo* info) {
2278 _has_slow_case = true;
2279 append(info);
2280 }
2281 };
2284 inline LIR_Opr LIR_OprDesc::illegalOpr() { return LIR_OprFact::illegalOpr; };
