Mercurial > hg > graal-compiler
annotate src/share/vm/opto/callnode.hpp @ 6885:685df3c6f84b
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Reviewed-by: coleenp, stefank, jprovino, ohair
author | jmasa |
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date | Tue, 18 Sep 2012 23:35:42 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_OPTO_CALLNODE_HPP |
26 #define SHARE_VM_OPTO_CALLNODE_HPP | |
27 | |
28 #include "opto/connode.hpp" | |
29 #include "opto/mulnode.hpp" | |
30 #include "opto/multnode.hpp" | |
31 #include "opto/opcodes.hpp" | |
32 #include "opto/phaseX.hpp" | |
33 #include "opto/type.hpp" | |
34 | |
0 | 35 // Portions of code courtesy of Clifford Click |
36 | |
37 // Optimization - Graph Style | |
38 | |
39 class Chaitin; | |
40 class NamedCounter; | |
41 class MultiNode; | |
42 class SafePointNode; | |
43 class CallNode; | |
44 class CallJavaNode; | |
45 class CallStaticJavaNode; | |
46 class CallDynamicJavaNode; | |
47 class CallRuntimeNode; | |
48 class CallLeafNode; | |
49 class CallLeafNoFPNode; | |
50 class AllocateNode; | |
33 | 51 class AllocateArrayNode; |
0 | 52 class LockNode; |
53 class UnlockNode; | |
54 class JVMState; | |
55 class OopMap; | |
56 class State; | |
57 class StartNode; | |
58 class MachCallNode; | |
59 class FastLockNode; | |
60 | |
61 //------------------------------StartNode-------------------------------------- | |
62 // The method start node | |
63 class StartNode : public MultiNode { | |
64 virtual uint cmp( const Node &n ) const; | |
65 virtual uint size_of() const; // Size is bigger | |
66 public: | |
67 const TypeTuple *_domain; | |
68 StartNode( Node *root, const TypeTuple *domain ) : MultiNode(2), _domain(domain) { | |
69 init_class_id(Class_Start); | |
70 init_req(0,this); | |
71 init_req(1,root); | |
72 } | |
73 virtual int Opcode() const; | |
74 virtual bool pinned() const { return true; }; | |
75 virtual const Type *bottom_type() const; | |
76 virtual const TypePtr *adr_type() const { return TypePtr::BOTTOM; } | |
77 virtual const Type *Value( PhaseTransform *phase ) const; | |
78 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
79 virtual void calling_convention( BasicType* sig_bt, VMRegPair *parm_reg, uint length ) const; | |
80 virtual const RegMask &in_RegMask(uint) const; | |
81 virtual Node *match( const ProjNode *proj, const Matcher *m ); | |
82 virtual uint ideal_reg() const { return 0; } | |
83 #ifndef PRODUCT | |
84 virtual void dump_spec(outputStream *st) const; | |
85 #endif | |
86 }; | |
87 | |
88 //------------------------------StartOSRNode----------------------------------- | |
89 // The method start node for on stack replacement code | |
90 class StartOSRNode : public StartNode { | |
91 public: | |
92 StartOSRNode( Node *root, const TypeTuple *domain ) : StartNode(root, domain) {} | |
93 virtual int Opcode() const; | |
94 static const TypeTuple *osr_domain(); | |
95 }; | |
96 | |
97 | |
98 //------------------------------ParmNode--------------------------------------- | |
99 // Incoming parameters | |
100 class ParmNode : public ProjNode { | |
101 static const char * const names[TypeFunc::Parms+1]; | |
102 public: | |
33 | 103 ParmNode( StartNode *src, uint con ) : ProjNode(src,con) { |
104 init_class_id(Class_Parm); | |
105 } | |
0 | 106 virtual int Opcode() const; |
107 virtual bool is_CFG() const { return (_con == TypeFunc::Control); } | |
108 virtual uint ideal_reg() const; | |
109 #ifndef PRODUCT | |
110 virtual void dump_spec(outputStream *st) const; | |
111 #endif | |
112 }; | |
113 | |
114 | |
115 //------------------------------ReturnNode------------------------------------- | |
116 // Return from subroutine node | |
117 class ReturnNode : public Node { | |
118 public: | |
119 ReturnNode( uint edges, Node *cntrl, Node *i_o, Node *memory, Node *retadr, Node *frameptr ); | |
120 virtual int Opcode() const; | |
121 virtual bool is_CFG() const { return true; } | |
122 virtual uint hash() const { return NO_HASH; } // CFG nodes do not hash | |
123 virtual bool depends_only_on_test() const { return false; } | |
124 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
125 virtual const Type *Value( PhaseTransform *phase ) const; | |
126 virtual uint ideal_reg() const { return NotAMachineReg; } | |
127 virtual uint match_edge(uint idx) const; | |
128 #ifndef PRODUCT | |
129 virtual void dump_req() const; | |
130 #endif | |
131 }; | |
132 | |
133 | |
134 //------------------------------RethrowNode------------------------------------ | |
135 // Rethrow of exception at call site. Ends a procedure before rethrowing; | |
136 // ends the current basic block like a ReturnNode. Restores registers and | |
137 // unwinds stack. Rethrow happens in the caller's method. | |
138 class RethrowNode : public Node { | |
139 public: | |
140 RethrowNode( Node *cntrl, Node *i_o, Node *memory, Node *frameptr, Node *ret_adr, Node *exception ); | |
141 virtual int Opcode() const; | |
142 virtual bool is_CFG() const { return true; } | |
143 virtual uint hash() const { return NO_HASH; } // CFG nodes do not hash | |
144 virtual bool depends_only_on_test() const { return false; } | |
145 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
146 virtual const Type *Value( PhaseTransform *phase ) const; | |
147 virtual uint match_edge(uint idx) const; | |
148 virtual uint ideal_reg() const { return NotAMachineReg; } | |
149 #ifndef PRODUCT | |
150 virtual void dump_req() const; | |
151 #endif | |
152 }; | |
153 | |
154 | |
155 //------------------------------TailCallNode----------------------------------- | |
156 // Pop stack frame and jump indirect | |
157 class TailCallNode : public ReturnNode { | |
158 public: | |
159 TailCallNode( Node *cntrl, Node *i_o, Node *memory, Node *frameptr, Node *retadr, Node *target, Node *moop ) | |
160 : ReturnNode( TypeFunc::Parms+2, cntrl, i_o, memory, frameptr, retadr ) { | |
161 init_req(TypeFunc::Parms, target); | |
162 init_req(TypeFunc::Parms+1, moop); | |
163 } | |
164 | |
165 virtual int Opcode() const; | |
166 virtual uint match_edge(uint idx) const; | |
167 }; | |
168 | |
169 //------------------------------TailJumpNode----------------------------------- | |
170 // Pop stack frame and jump indirect | |
171 class TailJumpNode : public ReturnNode { | |
172 public: | |
173 TailJumpNode( Node *cntrl, Node *i_o, Node *memory, Node *frameptr, Node *target, Node *ex_oop) | |
174 : ReturnNode(TypeFunc::Parms+2, cntrl, i_o, memory, frameptr, Compile::current()->top()) { | |
175 init_req(TypeFunc::Parms, target); | |
176 init_req(TypeFunc::Parms+1, ex_oop); | |
177 } | |
178 | |
179 virtual int Opcode() const; | |
180 virtual uint match_edge(uint idx) const; | |
181 }; | |
182 | |
183 //-------------------------------JVMState------------------------------------- | |
184 // A linked list of JVMState nodes captures the whole interpreter state, | |
185 // plus GC roots, for all active calls at some call site in this compilation | |
186 // unit. (If there is no inlining, then the list has exactly one link.) | |
187 // This provides a way to map the optimized program back into the interpreter, | |
188 // or to let the GC mark the stack. | |
189 class JVMState : public ResourceObj { | |
3939 | 190 friend class VMStructs; |
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191 public: |
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192 typedef enum { |
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193 Reexecute_Undefined = -1, // not defined -- will be translated into false later |
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194 Reexecute_False = 0, // false -- do not reexecute |
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195 Reexecute_True = 1 // true -- reexecute the bytecode |
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196 } ReexecuteState; //Reexecute State |
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197 |
0 | 198 private: |
199 JVMState* _caller; // List pointer for forming scope chains | |
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200 uint _depth; // One more than caller depth, or one. |
0 | 201 uint _locoff; // Offset to locals in input edge mapping |
202 uint _stkoff; // Offset to stack in input edge mapping | |
203 uint _monoff; // Offset to monitors in input edge mapping | |
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204 uint _scloff; // Offset to fields of scalar objs in input edge mapping |
0 | 205 uint _endoff; // Offset to end of input edge mapping |
206 uint _sp; // Jave Expression Stack Pointer for this state | |
207 int _bci; // Byte Code Index of this JVM point | |
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208 ReexecuteState _reexecute; // Whether this bytecode need to be re-executed |
0 | 209 ciMethod* _method; // Method Pointer |
210 SafePointNode* _map; // Map node associated with this scope | |
211 public: | |
212 friend class Compile; | |
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213 friend class PreserveReexecuteState; |
0 | 214 |
215 // Because JVMState objects live over the entire lifetime of the | |
216 // Compile object, they are allocated into the comp_arena, which | |
217 // does not get resource marked or reset during the compile process | |
218 void *operator new( size_t x, Compile* C ) { return C->comp_arena()->Amalloc(x); } | |
219 void operator delete( void * ) { } // fast deallocation | |
220 | |
221 // Create a new JVMState, ready for abstract interpretation. | |
222 JVMState(ciMethod* method, JVMState* caller); | |
223 JVMState(int stack_size); // root state; has a null method | |
224 | |
225 // Access functions for the JVM | |
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226 // ... --|--- loc ---|--- stk ---|--- arg ---|--- mon ---|--- scl ---| |
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227 // \ locoff \ stkoff \ argoff \ monoff \ scloff \ endoff |
0 | 228 uint locoff() const { return _locoff; } |
229 uint stkoff() const { return _stkoff; } | |
230 uint argoff() const { return _stkoff + _sp; } | |
231 uint monoff() const { return _monoff; } | |
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232 uint scloff() const { return _scloff; } |
0 | 233 uint endoff() const { return _endoff; } |
234 uint oopoff() const { return debug_end(); } | |
235 | |
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236 int loc_size() const { return stkoff() - locoff(); } |
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237 int stk_size() const { return monoff() - stkoff(); } |
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238 int arg_size() const { return monoff() - argoff(); } |
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239 int mon_size() const { return scloff() - monoff(); } |
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240 int scl_size() const { return endoff() - scloff(); } |
0 | 241 |
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242 bool is_loc(uint i) const { return locoff() <= i && i < stkoff(); } |
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243 bool is_stk(uint i) const { return stkoff() <= i && i < monoff(); } |
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244 bool is_mon(uint i) const { return monoff() <= i && i < scloff(); } |
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245 bool is_scl(uint i) const { return scloff() <= i && i < endoff(); } |
0 | 246 |
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247 uint sp() const { return _sp; } |
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248 int bci() const { return _bci; } |
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249 bool should_reexecute() const { return _reexecute==Reexecute_True; } |
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250 bool is_reexecute_undefined() const { return _reexecute==Reexecute_Undefined; } |
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251 bool has_method() const { return _method != NULL; } |
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252 ciMethod* method() const { assert(has_method(), ""); return _method; } |
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253 JVMState* caller() const { return _caller; } |
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254 SafePointNode* map() const { return _map; } |
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255 uint depth() const { return _depth; } |
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256 uint debug_start() const; // returns locoff of root caller |
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257 uint debug_end() const; // returns endoff of self |
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258 uint debug_size() const { |
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259 return loc_size() + sp() + mon_size() + scl_size(); |
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260 } |
0 | 261 uint debug_depth() const; // returns sum of debug_size values at all depths |
262 | |
263 // Returns the JVM state at the desired depth (1 == root). | |
264 JVMState* of_depth(int d) const; | |
265 | |
266 // Tells if two JVM states have the same call chain (depth, methods, & bcis). | |
267 bool same_calls_as(const JVMState* that) const; | |
268 | |
269 // Monitors (monitors are stored as (boxNode, objNode) pairs | |
270 enum { logMonitorEdges = 1 }; | |
271 int nof_monitors() const { return mon_size() >> logMonitorEdges; } | |
272 int monitor_depth() const { return nof_monitors() + (caller() ? caller()->monitor_depth() : 0); } | |
273 int monitor_box_offset(int idx) const { return monoff() + (idx << logMonitorEdges) + 0; } | |
274 int monitor_obj_offset(int idx) const { return monoff() + (idx << logMonitorEdges) + 1; } | |
275 bool is_monitor_box(uint off) const { | |
276 assert(is_mon(off), "should be called only for monitor edge"); | |
277 return (0 == bitfield(off - monoff(), 0, logMonitorEdges)); | |
278 } | |
279 bool is_monitor_use(uint off) const { return (is_mon(off) | |
280 && is_monitor_box(off)) | |
281 || (caller() && caller()->is_monitor_use(off)); } | |
282 | |
283 // Initialization functions for the JVM | |
284 void set_locoff(uint off) { _locoff = off; } | |
285 void set_stkoff(uint off) { _stkoff = off; } | |
286 void set_monoff(uint off) { _monoff = off; } | |
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287 void set_scloff(uint off) { _scloff = off; } |
0 | 288 void set_endoff(uint off) { _endoff = off; } |
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289 void set_offsets(uint off) { |
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290 _locoff = _stkoff = _monoff = _scloff = _endoff = off; |
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291 } |
0 | 292 void set_map(SafePointNode *map) { _map = map; } |
293 void set_sp(uint sp) { _sp = sp; } | |
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294 // _reexecute is initialized to "undefined" for a new bci |
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295 void set_bci(int bci) {if(_bci != bci)_reexecute=Reexecute_Undefined; _bci = bci; } |
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296 void set_should_reexecute(bool reexec) {_reexecute = reexec ? Reexecute_True : Reexecute_False;} |
0 | 297 |
298 // Miscellaneous utility functions | |
299 JVMState* clone_deep(Compile* C) const; // recursively clones caller chain | |
300 JVMState* clone_shallow(Compile* C) const; // retains uncloned caller | |
301 | |
302 #ifndef PRODUCT | |
303 void format(PhaseRegAlloc *regalloc, const Node *n, outputStream* st) const; | |
304 void dump_spec(outputStream *st) const; | |
305 void dump_on(outputStream* st) const; | |
306 void dump() const { | |
307 dump_on(tty); | |
308 } | |
309 #endif | |
310 }; | |
311 | |
312 //------------------------------SafePointNode---------------------------------- | |
313 // A SafePointNode is a subclass of a MultiNode for convenience (and | |
314 // potential code sharing) only - conceptually it is independent of | |
315 // the Node semantics. | |
316 class SafePointNode : public MultiNode { | |
317 virtual uint cmp( const Node &n ) const; | |
318 virtual uint size_of() const; // Size is bigger | |
319 | |
320 public: | |
321 SafePointNode(uint edges, JVMState* jvms, | |
322 // A plain safepoint advertises no memory effects (NULL): | |
323 const TypePtr* adr_type = NULL) | |
324 : MultiNode( edges ), | |
325 _jvms(jvms), | |
326 _oop_map(NULL), | |
327 _adr_type(adr_type) | |
328 { | |
329 init_class_id(Class_SafePoint); | |
330 } | |
331 | |
332 OopMap* _oop_map; // Array of OopMap info (8-bit char) for GC | |
333 JVMState* const _jvms; // Pointer to list of JVM State objects | |
334 const TypePtr* _adr_type; // What type of memory does this node produce? | |
335 | |
336 // Many calls take *all* of memory as input, | |
337 // but some produce a limited subset of that memory as output. | |
338 // The adr_type reports the call's behavior as a store, not a load. | |
339 | |
340 virtual JVMState* jvms() const { return _jvms; } | |
341 void set_jvms(JVMState* s) { | |
342 *(JVMState**)&_jvms = s; // override const attribute in the accessor | |
343 } | |
344 OopMap *oop_map() const { return _oop_map; } | |
345 void set_oop_map(OopMap *om) { _oop_map = om; } | |
346 | |
347 // Functionality from old debug nodes which has changed | |
348 Node *local(JVMState* jvms, uint idx) const { | |
349 assert(verify_jvms(jvms), "jvms must match"); | |
350 return in(jvms->locoff() + idx); | |
351 } | |
352 Node *stack(JVMState* jvms, uint idx) const { | |
353 assert(verify_jvms(jvms), "jvms must match"); | |
354 return in(jvms->stkoff() + idx); | |
355 } | |
356 Node *argument(JVMState* jvms, uint idx) const { | |
357 assert(verify_jvms(jvms), "jvms must match"); | |
358 return in(jvms->argoff() + idx); | |
359 } | |
360 Node *monitor_box(JVMState* jvms, uint idx) const { | |
361 assert(verify_jvms(jvms), "jvms must match"); | |
362 return in(jvms->monitor_box_offset(idx)); | |
363 } | |
364 Node *monitor_obj(JVMState* jvms, uint idx) const { | |
365 assert(verify_jvms(jvms), "jvms must match"); | |
366 return in(jvms->monitor_obj_offset(idx)); | |
367 } | |
368 | |
369 void set_local(JVMState* jvms, uint idx, Node *c); | |
370 | |
371 void set_stack(JVMState* jvms, uint idx, Node *c) { | |
372 assert(verify_jvms(jvms), "jvms must match"); | |
373 set_req(jvms->stkoff() + idx, c); | |
374 } | |
375 void set_argument(JVMState* jvms, uint idx, Node *c) { | |
376 assert(verify_jvms(jvms), "jvms must match"); | |
377 set_req(jvms->argoff() + idx, c); | |
378 } | |
379 void ensure_stack(JVMState* jvms, uint stk_size) { | |
380 assert(verify_jvms(jvms), "jvms must match"); | |
381 int grow_by = (int)stk_size - (int)jvms->stk_size(); | |
382 if (grow_by > 0) grow_stack(jvms, grow_by); | |
383 } | |
384 void grow_stack(JVMState* jvms, uint grow_by); | |
385 // Handle monitor stack | |
386 void push_monitor( const FastLockNode *lock ); | |
387 void pop_monitor (); | |
388 Node *peek_monitor_box() const; | |
389 Node *peek_monitor_obj() const; | |
390 | |
391 // Access functions for the JVM | |
392 Node *control () const { return in(TypeFunc::Control ); } | |
393 Node *i_o () const { return in(TypeFunc::I_O ); } | |
394 Node *memory () const { return in(TypeFunc::Memory ); } | |
395 Node *returnadr() const { return in(TypeFunc::ReturnAdr); } | |
396 Node *frameptr () const { return in(TypeFunc::FramePtr ); } | |
397 | |
398 void set_control ( Node *c ) { set_req(TypeFunc::Control,c); } | |
399 void set_i_o ( Node *c ) { set_req(TypeFunc::I_O ,c); } | |
400 void set_memory ( Node *c ) { set_req(TypeFunc::Memory ,c); } | |
401 | |
402 MergeMemNode* merged_memory() const { | |
403 return in(TypeFunc::Memory)->as_MergeMem(); | |
404 } | |
405 | |
406 // The parser marks useless maps as dead when it's done with them: | |
407 bool is_killed() { return in(TypeFunc::Control) == NULL; } | |
408 | |
409 // Exception states bubbling out of subgraphs such as inlined calls | |
410 // are recorded here. (There might be more than one, hence the "next".) | |
411 // This feature is used only for safepoints which serve as "maps" | |
412 // for JVM states during parsing, intrinsic expansion, etc. | |
413 SafePointNode* next_exception() const; | |
414 void set_next_exception(SafePointNode* n); | |
415 bool has_exceptions() const { return next_exception() != NULL; } | |
416 | |
417 // Standard Node stuff | |
418 virtual int Opcode() const; | |
419 virtual bool pinned() const { return true; } | |
420 virtual const Type *Value( PhaseTransform *phase ) const; | |
421 virtual const Type *bottom_type() const { return Type::CONTROL; } | |
422 virtual const TypePtr *adr_type() const { return _adr_type; } | |
423 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
424 virtual Node *Identity( PhaseTransform *phase ); | |
425 virtual uint ideal_reg() const { return 0; } | |
426 virtual const RegMask &in_RegMask(uint) const; | |
427 virtual const RegMask &out_RegMask() const; | |
428 virtual uint match_edge(uint idx) const; | |
429 | |
430 static bool needs_polling_address_input(); | |
431 | |
432 #ifndef PRODUCT | |
433 virtual void dump_spec(outputStream *st) const; | |
434 #endif | |
435 }; | |
436 | |
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437 //------------------------------SafePointScalarObjectNode---------------------- |
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438 // A SafePointScalarObjectNode represents the state of a scalarized object |
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439 // at a safepoint. |
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440 |
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441 class SafePointScalarObjectNode: public TypeNode { |
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442 uint _first_index; // First input edge index of a SafePoint node where |
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443 // states of the scalarized object fields are collected. |
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444 uint _n_fields; // Number of non-static fields of the scalarized object. |
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445 DEBUG_ONLY(AllocateNode* _alloc;) |
4115 | 446 |
447 virtual uint hash() const ; // { return NO_HASH; } | |
448 virtual uint cmp( const Node &n ) const; | |
449 | |
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450 public: |
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451 SafePointScalarObjectNode(const TypeOopPtr* tp, |
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452 #ifdef ASSERT |
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453 AllocateNode* alloc, |
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454 #endif |
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455 uint first_index, uint n_fields); |
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456 virtual int Opcode() const; |
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457 virtual uint ideal_reg() const; |
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458 virtual const RegMask &in_RegMask(uint) const; |
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459 virtual const RegMask &out_RegMask() const; |
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460 virtual uint match_edge(uint idx) const; |
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461 |
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462 uint first_index() const { return _first_index; } |
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463 uint n_fields() const { return _n_fields; } |
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464 |
4115 | 465 #ifdef ASSERT |
466 AllocateNode* alloc() const { return _alloc; } | |
467 #endif | |
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468 |
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469 virtual uint size_of() const { return sizeof(*this); } |
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470 |
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471 // Assumes that "this" is an argument to a safepoint node "s", and that |
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472 // "new_call" is being created to correspond to "s". But the difference |
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473 // between the start index of the jvmstates of "new_call" and "s" is |
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474 // "jvms_adj". Produce and return a SafePointScalarObjectNode that |
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475 // corresponds appropriately to "this" in "new_call". Assumes that |
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476 // "sosn_map" is a map, specific to the translation of "s" to "new_call", |
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477 // mapping old SafePointScalarObjectNodes to new, to avoid multiple copies. |
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478 SafePointScalarObjectNode* clone(int jvms_adj, Dict* sosn_map) const; |
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479 |
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480 #ifndef PRODUCT |
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481 virtual void dump_spec(outputStream *st) const; |
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482 #endif |
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483 }; |
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484 |
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485 |
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486 // Simple container for the outgoing projections of a call. Useful |
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487 // for serious surgery on calls. |
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488 class CallProjections : public StackObj { |
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489 public: |
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490 Node* fallthrough_proj; |
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491 Node* fallthrough_catchproj; |
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492 Node* fallthrough_memproj; |
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493 Node* fallthrough_ioproj; |
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494 Node* catchall_catchproj; |
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495 Node* catchall_memproj; |
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496 Node* catchall_ioproj; |
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497 Node* resproj; |
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498 Node* exobj; |
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499 }; |
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500 |
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501 |
0 | 502 //------------------------------CallNode--------------------------------------- |
503 // Call nodes now subsume the function of debug nodes at callsites, so they | |
504 // contain the functionality of a full scope chain of debug nodes. | |
505 class CallNode : public SafePointNode { | |
3939 | 506 friend class VMStructs; |
0 | 507 public: |
508 const TypeFunc *_tf; // Function type | |
509 address _entry_point; // Address of method being called | |
510 float _cnt; // Estimate of number of times called | |
511 | |
512 CallNode(const TypeFunc* tf, address addr, const TypePtr* adr_type) | |
513 : SafePointNode(tf->domain()->cnt(), NULL, adr_type), | |
514 _tf(tf), | |
515 _entry_point(addr), | |
516 _cnt(COUNT_UNKNOWN) | |
517 { | |
518 init_class_id(Class_Call); | |
519 } | |
520 | |
521 const TypeFunc* tf() const { return _tf; } | |
522 const address entry_point() const { return _entry_point; } | |
523 const float cnt() const { return _cnt; } | |
524 | |
525 void set_tf(const TypeFunc* tf) { _tf = tf; } | |
526 void set_entry_point(address p) { _entry_point = p; } | |
527 void set_cnt(float c) { _cnt = c; } | |
528 | |
529 virtual const Type *bottom_type() const; | |
530 virtual const Type *Value( PhaseTransform *phase ) const; | |
531 virtual Node *Identity( PhaseTransform *phase ) { return this; } | |
532 virtual uint cmp( const Node &n ) const; | |
533 virtual uint size_of() const = 0; | |
534 virtual void calling_convention( BasicType* sig_bt, VMRegPair *parm_regs, uint argcnt ) const; | |
535 virtual Node *match( const ProjNode *proj, const Matcher *m ); | |
536 virtual uint ideal_reg() const { return NotAMachineReg; } | |
537 // Are we guaranteed that this node is a safepoint? Not true for leaf calls and | |
538 // for some macro nodes whose expansion does not have a safepoint on the fast path. | |
539 virtual bool guaranteed_safepoint() { return true; } | |
540 // For macro nodes, the JVMState gets modified during expansion, so when cloning | |
541 // the node the JVMState must be cloned. | |
542 virtual void clone_jvms() { } // default is not to clone | |
543 | |
65 | 544 // Returns true if the call may modify n |
545 virtual bool may_modify(const TypePtr *addr_t, PhaseTransform *phase); | |
546 // Does this node have a use of n other than in debug information? | |
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547 bool has_non_debug_use(Node *n); |
65 | 548 // Returns the unique CheckCastPP of a call |
549 // or result projection is there are several CheckCastPP | |
550 // or returns NULL if there is no one. | |
551 Node *result_cast(); | |
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552 // Does this node returns pointer? |
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553 bool returns_pointer() const { |
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554 const TypeTuple *r = tf()->range(); |
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555 return (r->cnt() > TypeFunc::Parms && |
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556 r->field_at(TypeFunc::Parms)->isa_ptr()); |
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557 } |
65 | 558 |
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559 // Collect all the interesting edges from a call for use in |
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560 // replacing the call by something else. Used by macro expansion |
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561 // and the late inlining support. |
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562 void extract_projections(CallProjections* projs, bool separate_io_proj); |
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563 |
0 | 564 virtual uint match_edge(uint idx) const; |
565 | |
566 #ifndef PRODUCT | |
567 virtual void dump_req() const; | |
568 virtual void dump_spec(outputStream *st) const; | |
569 #endif | |
570 }; | |
571 | |
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572 |
0 | 573 //------------------------------CallJavaNode----------------------------------- |
574 // Make a static or dynamic subroutine call node using Java calling | |
575 // convention. (The "Java" calling convention is the compiler's calling | |
576 // convention, as opposed to the interpreter's or that of native C.) | |
577 class CallJavaNode : public CallNode { | |
3939 | 578 friend class VMStructs; |
0 | 579 protected: |
580 virtual uint cmp( const Node &n ) const; | |
581 virtual uint size_of() const; // Size is bigger | |
582 | |
583 bool _optimized_virtual; | |
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584 bool _method_handle_invoke; |
0 | 585 ciMethod* _method; // Method being direct called |
586 public: | |
587 const int _bci; // Byte Code Index of call byte code | |
588 CallJavaNode(const TypeFunc* tf , address addr, ciMethod* method, int bci) | |
589 : CallNode(tf, addr, TypePtr::BOTTOM), | |
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590 _method(method), _bci(bci), |
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591 _optimized_virtual(false), |
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592 _method_handle_invoke(false) |
0 | 593 { |
594 init_class_id(Class_CallJava); | |
595 } | |
596 | |
597 virtual int Opcode() const; | |
598 ciMethod* method() const { return _method; } | |
599 void set_method(ciMethod *m) { _method = m; } | |
600 void set_optimized_virtual(bool f) { _optimized_virtual = f; } | |
601 bool is_optimized_virtual() const { return _optimized_virtual; } | |
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602 void set_method_handle_invoke(bool f) { _method_handle_invoke = f; } |
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603 bool is_method_handle_invoke() const { return _method_handle_invoke; } |
0 | 604 |
605 #ifndef PRODUCT | |
606 virtual void dump_spec(outputStream *st) const; | |
607 #endif | |
608 }; | |
609 | |
610 //------------------------------CallStaticJavaNode----------------------------- | |
611 // Make a direct subroutine call using Java calling convention (for static | |
612 // calls and optimized virtual calls, plus calls to wrappers for run-time | |
613 // routines); generates static stub. | |
614 class CallStaticJavaNode : public CallJavaNode { | |
615 virtual uint cmp( const Node &n ) const; | |
616 virtual uint size_of() const; // Size is bigger | |
617 public: | |
618 CallStaticJavaNode(const TypeFunc* tf, address addr, ciMethod* method, int bci) | |
619 : CallJavaNode(tf, addr, method, bci), _name(NULL) { | |
620 init_class_id(Class_CallStaticJava); | |
621 } | |
622 CallStaticJavaNode(const TypeFunc* tf, address addr, const char* name, int bci, | |
623 const TypePtr* adr_type) | |
624 : CallJavaNode(tf, addr, NULL, bci), _name(name) { | |
625 init_class_id(Class_CallStaticJava); | |
626 // This node calls a runtime stub, which often has narrow memory effects. | |
627 _adr_type = adr_type; | |
628 } | |
629 const char *_name; // Runtime wrapper name | |
630 | |
631 // If this is an uncommon trap, return the request code, else zero. | |
632 int uncommon_trap_request() const; | |
633 static int extract_uncommon_trap_request(const Node* call); | |
634 | |
635 virtual int Opcode() const; | |
636 #ifndef PRODUCT | |
637 virtual void dump_spec(outputStream *st) const; | |
638 #endif | |
639 }; | |
640 | |
641 //------------------------------CallDynamicJavaNode---------------------------- | |
642 // Make a dispatched call using Java calling convention. | |
643 class CallDynamicJavaNode : public CallJavaNode { | |
644 virtual uint cmp( const Node &n ) const; | |
645 virtual uint size_of() const; // Size is bigger | |
646 public: | |
647 CallDynamicJavaNode( const TypeFunc *tf , address addr, ciMethod* method, int vtable_index, int bci ) : CallJavaNode(tf,addr,method,bci), _vtable_index(vtable_index) { | |
648 init_class_id(Class_CallDynamicJava); | |
649 } | |
650 | |
651 int _vtable_index; | |
652 virtual int Opcode() const; | |
653 #ifndef PRODUCT | |
654 virtual void dump_spec(outputStream *st) const; | |
655 #endif | |
656 }; | |
657 | |
658 //------------------------------CallRuntimeNode-------------------------------- | |
659 // Make a direct subroutine call node into compiled C++ code. | |
660 class CallRuntimeNode : public CallNode { | |
661 virtual uint cmp( const Node &n ) const; | |
662 virtual uint size_of() const; // Size is bigger | |
663 public: | |
664 CallRuntimeNode(const TypeFunc* tf, address addr, const char* name, | |
665 const TypePtr* adr_type) | |
666 : CallNode(tf, addr, adr_type), | |
667 _name(name) | |
668 { | |
669 init_class_id(Class_CallRuntime); | |
670 } | |
671 | |
672 const char *_name; // Printable name, if _method is NULL | |
673 virtual int Opcode() const; | |
674 virtual void calling_convention( BasicType* sig_bt, VMRegPair *parm_regs, uint argcnt ) const; | |
675 | |
676 #ifndef PRODUCT | |
677 virtual void dump_spec(outputStream *st) const; | |
678 #endif | |
679 }; | |
680 | |
681 //------------------------------CallLeafNode----------------------------------- | |
682 // Make a direct subroutine call node into compiled C++ code, without | |
683 // safepoints | |
684 class CallLeafNode : public CallRuntimeNode { | |
685 public: | |
686 CallLeafNode(const TypeFunc* tf, address addr, const char* name, | |
687 const TypePtr* adr_type) | |
688 : CallRuntimeNode(tf, addr, name, adr_type) | |
689 { | |
690 init_class_id(Class_CallLeaf); | |
691 } | |
692 virtual int Opcode() const; | |
693 virtual bool guaranteed_safepoint() { return false; } | |
694 #ifndef PRODUCT | |
695 virtual void dump_spec(outputStream *st) const; | |
696 #endif | |
697 }; | |
698 | |
699 //------------------------------CallLeafNoFPNode------------------------------- | |
700 // CallLeafNode, not using floating point or using it in the same manner as | |
701 // the generated code | |
702 class CallLeafNoFPNode : public CallLeafNode { | |
703 public: | |
704 CallLeafNoFPNode(const TypeFunc* tf, address addr, const char* name, | |
705 const TypePtr* adr_type) | |
706 : CallLeafNode(tf, addr, name, adr_type) | |
707 { | |
708 } | |
709 virtual int Opcode() const; | |
710 }; | |
711 | |
712 | |
713 //------------------------------Allocate--------------------------------------- | |
714 // High-level memory allocation | |
715 // | |
716 // AllocateNode and AllocateArrayNode are subclasses of CallNode because they will | |
717 // get expanded into a code sequence containing a call. Unlike other CallNodes, | |
718 // they have 2 memory projections and 2 i_o projections (which are distinguished by | |
719 // the _is_io_use flag in the projection.) This is needed when expanding the node in | |
720 // order to differentiate the uses of the projection on the normal control path from | |
721 // those on the exception return path. | |
722 // | |
723 class AllocateNode : public CallNode { | |
724 public: | |
725 enum { | |
726 // Output: | |
727 RawAddress = TypeFunc::Parms, // the newly-allocated raw address | |
728 // Inputs: | |
729 AllocSize = TypeFunc::Parms, // size (in bytes) of the new object | |
730 KlassNode, // type (maybe dynamic) of the obj. | |
731 InitialTest, // slow-path test (may be constant) | |
732 ALength, // array length (or TOP if none) | |
733 ParmLimit | |
734 }; | |
735 | |
736 static const TypeFunc* alloc_type() { | |
737 const Type** fields = TypeTuple::fields(ParmLimit - TypeFunc::Parms); | |
738 fields[AllocSize] = TypeInt::POS; | |
739 fields[KlassNode] = TypeInstPtr::NOTNULL; | |
740 fields[InitialTest] = TypeInt::BOOL; | |
741 fields[ALength] = TypeInt::INT; // length (can be a bad length) | |
742 | |
743 const TypeTuple *domain = TypeTuple::make(ParmLimit, fields); | |
744 | |
745 // create result type (range) | |
746 fields = TypeTuple::fields(1); | |
747 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop | |
748 | |
749 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); | |
750 | |
751 return TypeFunc::make(domain, range); | |
752 } | |
753 | |
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754 bool _is_scalar_replaceable; // Result of Escape Analysis |
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755 |
0 | 756 virtual uint size_of() const; // Size is bigger |
757 AllocateNode(Compile* C, const TypeFunc *atype, Node *ctrl, Node *mem, Node *abio, | |
758 Node *size, Node *klass_node, Node *initial_test); | |
759 // Expansion modifies the JVMState, so we need to clone it | |
760 virtual void clone_jvms() { | |
761 set_jvms(jvms()->clone_deep(Compile::current())); | |
762 } | |
763 virtual int Opcode() const; | |
764 virtual uint ideal_reg() const { return Op_RegP; } | |
765 virtual bool guaranteed_safepoint() { return false; } | |
766 | |
65 | 767 // allocations do not modify their arguments |
768 virtual bool may_modify(const TypePtr *addr_t, PhaseTransform *phase) { return false;} | |
769 | |
0 | 770 // Pattern-match a possible usage of AllocateNode. |
771 // Return null if no allocation is recognized. | |
772 // The operand is the pointer produced by the (possible) allocation. | |
773 // It must be a projection of the Allocate or its subsequent CastPP. | |
774 // (Note: This function is defined in file graphKit.cpp, near | |
775 // GraphKit::new_instance/new_array, whose output it recognizes.) | |
776 // The 'ptr' may not have an offset unless the 'offset' argument is given. | |
777 static AllocateNode* Ideal_allocation(Node* ptr, PhaseTransform* phase); | |
778 | |
779 // Fancy version which uses AddPNode::Ideal_base_and_offset to strip | |
780 // an offset, which is reported back to the caller. | |
781 // (Note: AllocateNode::Ideal_allocation is defined in graphKit.cpp.) | |
782 static AllocateNode* Ideal_allocation(Node* ptr, PhaseTransform* phase, | |
783 intptr_t& offset); | |
784 | |
785 // Dig the klass operand out of a (possible) allocation site. | |
786 static Node* Ideal_klass(Node* ptr, PhaseTransform* phase) { | |
787 AllocateNode* allo = Ideal_allocation(ptr, phase); | |
788 return (allo == NULL) ? NULL : allo->in(KlassNode); | |
789 } | |
790 | |
791 // Conservatively small estimate of offset of first non-header byte. | |
792 int minimum_header_size() { | |
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793 return is_AllocateArray() ? arrayOopDesc::base_offset_in_bytes(T_BYTE) : |
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794 instanceOopDesc::base_offset_in_bytes(); |
0 | 795 } |
796 | |
797 // Return the corresponding initialization barrier (or null if none). | |
798 // Walks out edges to find it... | |
799 // (Note: Both InitializeNode::allocation and AllocateNode::initialization | |
800 // are defined in graphKit.cpp, which sets up the bidirectional relation.) | |
801 InitializeNode* initialization(); | |
802 | |
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803 // Return the corresponding storestore barrier (or null if none). |
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804 // Walks out edges to find it... |
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805 MemBarStoreStoreNode* storestore(); |
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806 |
0 | 807 // Convenience for initialization->maybe_set_complete(phase) |
808 bool maybe_set_complete(PhaseGVN* phase); | |
809 }; | |
810 | |
811 //------------------------------AllocateArray--------------------------------- | |
812 // | |
813 // High-level array allocation | |
814 // | |
815 class AllocateArrayNode : public AllocateNode { | |
816 public: | |
817 AllocateArrayNode(Compile* C, const TypeFunc *atype, Node *ctrl, Node *mem, Node *abio, | |
818 Node* size, Node* klass_node, Node* initial_test, | |
819 Node* count_val | |
820 ) | |
821 : AllocateNode(C, atype, ctrl, mem, abio, size, klass_node, | |
822 initial_test) | |
823 { | |
824 init_class_id(Class_AllocateArray); | |
825 set_req(AllocateNode::ALength, count_val); | |
826 } | |
827 virtual int Opcode() const; | |
828 virtual uint size_of() const; // Size is bigger | |
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829 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); |
0 | 830 |
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831 // Dig the length operand out of a array allocation site. |
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832 Node* Ideal_length() { |
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833 return in(AllocateNode::ALength); |
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834 } |
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835 |
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836 // Dig the length operand out of a array allocation site and narrow the |
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837 // type with a CastII, if necesssary |
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838 Node* make_ideal_length(const TypeOopPtr* ary_type, PhaseTransform *phase, bool can_create = true); |
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839 |
0 | 840 // Pattern-match a possible usage of AllocateArrayNode. |
841 // Return null if no allocation is recognized. | |
842 static AllocateArrayNode* Ideal_array_allocation(Node* ptr, PhaseTransform* phase) { | |
843 AllocateNode* allo = Ideal_allocation(ptr, phase); | |
844 return (allo == NULL || !allo->is_AllocateArray()) | |
845 ? NULL : allo->as_AllocateArray(); | |
846 } | |
847 }; | |
848 | |
849 //------------------------------AbstractLockNode----------------------------------- | |
850 class AbstractLockNode: public CallNode { | |
851 private: | |
4777 | 852 enum { |
853 Regular = 0, // Normal lock | |
854 NonEscObj, // Lock is used for non escaping object | |
855 Coarsened, // Lock was coarsened | |
856 Nested // Nested lock | |
857 } _kind; | |
0 | 858 #ifndef PRODUCT |
859 NamedCounter* _counter; | |
860 #endif | |
861 | |
862 protected: | |
863 // helper functions for lock elimination | |
864 // | |
865 | |
866 bool find_matching_unlock(const Node* ctrl, LockNode* lock, | |
867 GrowableArray<AbstractLockNode*> &lock_ops); | |
868 bool find_lock_and_unlock_through_if(Node* node, LockNode* lock, | |
869 GrowableArray<AbstractLockNode*> &lock_ops); | |
870 bool find_unlocks_for_region(const RegionNode* region, LockNode* lock, | |
871 GrowableArray<AbstractLockNode*> &lock_ops); | |
872 LockNode *find_matching_lock(UnlockNode* unlock); | |
873 | |
4777 | 874 // Update the counter to indicate that this lock was eliminated. |
875 void set_eliminated_lock_counter() PRODUCT_RETURN; | |
0 | 876 |
877 public: | |
878 AbstractLockNode(const TypeFunc *tf) | |
879 : CallNode(tf, NULL, TypeRawPtr::BOTTOM), | |
4777 | 880 _kind(Regular) |
0 | 881 { |
882 #ifndef PRODUCT | |
883 _counter = NULL; | |
884 #endif | |
885 } | |
886 virtual int Opcode() const = 0; | |
887 Node * obj_node() const {return in(TypeFunc::Parms + 0); } | |
888 Node * box_node() const {return in(TypeFunc::Parms + 1); } | |
889 Node * fastlock_node() const {return in(TypeFunc::Parms + 2); } | |
4777 | 890 void set_box_node(Node* box) { set_req(TypeFunc::Parms + 1, box); } |
891 | |
0 | 892 const Type *sub(const Type *t1, const Type *t2) const { return TypeInt::CC;} |
893 | |
894 virtual uint size_of() const { return sizeof(*this); } | |
895 | |
4777 | 896 bool is_eliminated() const { return (_kind != Regular); } |
897 bool is_non_esc_obj() const { return (_kind == NonEscObj); } | |
898 bool is_coarsened() const { return (_kind == Coarsened); } | |
899 bool is_nested() const { return (_kind == Nested); } | |
0 | 900 |
4777 | 901 void set_non_esc_obj() { _kind = NonEscObj; set_eliminated_lock_counter(); } |
902 void set_coarsened() { _kind = Coarsened; set_eliminated_lock_counter(); } | |
903 void set_nested() { _kind = Nested; set_eliminated_lock_counter(); } | |
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904 |
65 | 905 // locking does not modify its arguments |
4777 | 906 virtual bool may_modify(const TypePtr *addr_t, PhaseTransform *phase){ return false;} |
65 | 907 |
0 | 908 #ifndef PRODUCT |
909 void create_lock_counter(JVMState* s); | |
910 NamedCounter* counter() const { return _counter; } | |
911 #endif | |
912 }; | |
913 | |
914 //------------------------------Lock--------------------------------------- | |
915 // High-level lock operation | |
916 // | |
917 // This is a subclass of CallNode because it is a macro node which gets expanded | |
918 // into a code sequence containing a call. This node takes 3 "parameters": | |
919 // 0 - object to lock | |
920 // 1 - a BoxLockNode | |
921 // 2 - a FastLockNode | |
922 // | |
923 class LockNode : public AbstractLockNode { | |
924 public: | |
925 | |
926 static const TypeFunc *lock_type() { | |
927 // create input type (domain) | |
928 const Type **fields = TypeTuple::fields(3); | |
929 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked | |
930 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock | |
931 fields[TypeFunc::Parms+2] = TypeInt::BOOL; // FastLock | |
932 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+3,fields); | |
933 | |
934 // create result type (range) | |
935 fields = TypeTuple::fields(0); | |
936 | |
937 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); | |
938 | |
939 return TypeFunc::make(domain,range); | |
940 } | |
941 | |
942 virtual int Opcode() const; | |
943 virtual uint size_of() const; // Size is bigger | |
944 LockNode(Compile* C, const TypeFunc *tf) : AbstractLockNode( tf ) { | |
945 init_class_id(Class_Lock); | |
946 init_flags(Flag_is_macro); | |
947 C->add_macro_node(this); | |
948 } | |
949 virtual bool guaranteed_safepoint() { return false; } | |
950 | |
951 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
952 // Expansion modifies the JVMState, so we need to clone it | |
953 virtual void clone_jvms() { | |
954 set_jvms(jvms()->clone_deep(Compile::current())); | |
955 } | |
4777 | 956 |
957 bool is_nested_lock_region(); // Is this Lock nested? | |
0 | 958 }; |
959 | |
960 //------------------------------Unlock--------------------------------------- | |
961 // High-level unlock operation | |
962 class UnlockNode : public AbstractLockNode { | |
963 public: | |
964 virtual int Opcode() const; | |
965 virtual uint size_of() const; // Size is bigger | |
966 UnlockNode(Compile* C, const TypeFunc *tf) : AbstractLockNode( tf ) { | |
967 init_class_id(Class_Unlock); | |
968 init_flags(Flag_is_macro); | |
969 C->add_macro_node(this); | |
970 } | |
971 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); | |
972 // unlock is never a safepoint | |
973 virtual bool guaranteed_safepoint() { return false; } | |
974 }; | |
1972 | 975 |
976 #endif // SHARE_VM_OPTO_CALLNODE_HPP |