Mercurial > hg > truffle
annotate src/share/vm/opto/machnode.hpp @ 5274:e72dd6533eb9
documented importance of nmethod::_graal_compiled_method wrt code unloading and GC
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 23 Apr 2012 15:42:30 +0200 |
parents | f03a3c8bd5e5 |
children | 8c92982cbbc4 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2010, 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_MACHNODE_HPP |
26 #define SHARE_VM_OPTO_MACHNODE_HPP | |
27 | |
28 #include "opto/callnode.hpp" | |
29 #include "opto/matcher.hpp" | |
30 #include "opto/multnode.hpp" | |
31 #include "opto/node.hpp" | |
32 #include "opto/regmask.hpp" | |
33 | |
0 | 34 class BufferBlob; |
35 class CodeBuffer; | |
36 class JVMState; | |
37 class MachCallDynamicJavaNode; | |
38 class MachCallJavaNode; | |
39 class MachCallLeafNode; | |
40 class MachCallNode; | |
41 class MachCallRuntimeNode; | |
42 class MachCallStaticJavaNode; | |
43 class MachEpilogNode; | |
44 class MachIfNode; | |
45 class MachNullCheckNode; | |
46 class MachOper; | |
47 class MachProjNode; | |
48 class MachPrologNode; | |
49 class MachReturnNode; | |
50 class MachSafePointNode; | |
51 class MachSpillCopyNode; | |
52 class Matcher; | |
53 class PhaseRegAlloc; | |
54 class RegMask; | |
55 class State; | |
56 | |
57 //---------------------------MachOper------------------------------------------ | |
58 class MachOper : public ResourceObj { | |
59 public: | |
60 // Allocate right next to the MachNodes in the same arena | |
61 void *operator new( size_t x, Compile* C ) { return C->node_arena()->Amalloc_D(x); } | |
62 | |
63 // Opcode | |
64 virtual uint opcode() const = 0; | |
65 | |
66 // Number of input edges. | |
67 // Generally at least 1 | |
68 virtual uint num_edges() const { return 1; } | |
69 // Array of Register masks | |
70 virtual const RegMask *in_RegMask(int index) const; | |
71 | |
72 // Methods to output the encoding of the operand | |
73 | |
74 // Negate conditional branches. Error for non-branch Nodes | |
75 virtual void negate(); | |
76 | |
77 // Return the value requested | |
78 // result register lookup, corresponding to int_format | |
79 virtual int reg(PhaseRegAlloc *ra_, const Node *node) const; | |
80 // input register lookup, corresponding to ext_format | |
81 virtual int reg(PhaseRegAlloc *ra_, const Node *node, int idx) const; | |
82 | |
83 // helpers for MacroAssembler generation from ADLC | |
84 Register as_Register(PhaseRegAlloc *ra_, const Node *node) const { | |
85 return ::as_Register(reg(ra_, node)); | |
86 } | |
87 Register as_Register(PhaseRegAlloc *ra_, const Node *node, int idx) const { | |
88 return ::as_Register(reg(ra_, node, idx)); | |
89 } | |
90 FloatRegister as_FloatRegister(PhaseRegAlloc *ra_, const Node *node) const { | |
91 return ::as_FloatRegister(reg(ra_, node)); | |
92 } | |
93 FloatRegister as_FloatRegister(PhaseRegAlloc *ra_, const Node *node, int idx) const { | |
94 return ::as_FloatRegister(reg(ra_, node, idx)); | |
95 } | |
96 | |
97 #if defined(IA32) || defined(AMD64) | |
98 XMMRegister as_XMMRegister(PhaseRegAlloc *ra_, const Node *node) const { | |
99 return ::as_XMMRegister(reg(ra_, node)); | |
100 } | |
101 XMMRegister as_XMMRegister(PhaseRegAlloc *ra_, const Node *node, int idx) const { | |
102 return ::as_XMMRegister(reg(ra_, node, idx)); | |
103 } | |
104 #endif | |
105 | |
106 virtual intptr_t constant() const; | |
107 virtual bool constant_is_oop() const; | |
108 virtual jdouble constantD() const; | |
109 virtual jfloat constantF() const; | |
110 virtual jlong constantL() const; | |
111 virtual TypeOopPtr *oop() const; | |
112 virtual int ccode() const; | |
113 // A zero, default, indicates this value is not needed. | |
114 // May need to lookup the base register, as done in int_ and ext_format | |
115 virtual int base (PhaseRegAlloc *ra_, const Node *node, int idx) const; | |
116 virtual int index(PhaseRegAlloc *ra_, const Node *node, int idx) const; | |
117 virtual int scale() const; | |
118 // Parameters needed to support MEMORY_INTERFACE access to stackSlot | |
119 virtual int disp (PhaseRegAlloc *ra_, const Node *node, int idx) const; | |
120 // Check for PC-Relative displacement | |
121 virtual bool disp_is_oop() const; | |
122 virtual int constant_disp() const; // usu. 0, may return Type::OffsetBot | |
123 virtual int base_position() const; // base edge position, or -1 | |
124 virtual int index_position() const; // index edge position, or -1 | |
125 | |
126 // Access the TypeKlassPtr of operands with a base==RegI and disp==RegP | |
127 // Only returns non-null value for i486.ad's indOffset32X | |
128 virtual const TypePtr *disp_as_type() const { return NULL; } | |
129 | |
130 // Return the label | |
131 virtual Label *label() const; | |
132 | |
133 // Return the method's address | |
134 virtual intptr_t method() const; | |
135 | |
136 // Hash and compare over operands are currently identical | |
137 virtual uint hash() const; | |
138 virtual uint cmp( const MachOper &oper ) const; | |
139 | |
140 // Virtual clone, since I do not know how big the MachOper is. | |
141 virtual MachOper *clone(Compile* C) const = 0; | |
142 | |
143 // Return ideal Type from simple operands. Fail for complex operands. | |
144 virtual const Type *type() const; | |
145 | |
146 // Set an integer offset if we have one, or error otherwise | |
147 virtual void set_con( jint c0 ) { ShouldNotReachHere(); } | |
148 | |
149 #ifndef PRODUCT | |
150 // Return name of operand | |
151 virtual const char *Name() const { return "???";} | |
152 | |
153 // Methods to output the text version of the operand | |
154 virtual void int_format(PhaseRegAlloc *,const MachNode *node, outputStream *st) const = 0; | |
155 virtual void ext_format(PhaseRegAlloc *,const MachNode *node,int idx, outputStream *st) const=0; | |
156 | |
157 virtual void dump_spec(outputStream *st) const; // Print per-operand info | |
158 #endif | |
159 }; | |
160 | |
161 //------------------------------MachNode--------------------------------------- | |
162 // Base type for all machine specific nodes. All node classes generated by the | |
163 // ADLC inherit from this class. | |
164 class MachNode : public Node { | |
165 public: | |
166 MachNode() : Node((uint)0), _num_opnds(0), _opnds(NULL) { | |
167 init_class_id(Class_Mach); | |
168 } | |
169 // Required boilerplate | |
170 virtual uint size_of() const { return sizeof(MachNode); } | |
171 virtual int Opcode() const; // Always equal to MachNode | |
172 virtual uint rule() const = 0; // Machine-specific opcode | |
173 // Number of inputs which come before the first operand. | |
174 // Generally at least 1, to skip the Control input | |
175 virtual uint oper_input_base() const { return 1; } | |
176 | |
177 // Copy inputs and operands to new node of instruction. | |
178 // Called from cisc_version() and short_branch_version(). | |
179 // !!!! The method's body is defined in ad_<arch>.cpp file. | |
180 void fill_new_machnode(MachNode *n, Compile* C) const; | |
181 | |
182 // Return an equivalent instruction using memory for cisc_operand position | |
183 virtual MachNode *cisc_version(int offset, Compile* C); | |
184 // Modify this instruction's register mask to use stack version for cisc_operand | |
185 virtual void use_cisc_RegMask(); | |
186 | |
187 // Support for short branches | |
188 bool may_be_short_branch() const { return (flags() & Flag_may_be_short_branch) != 0; } | |
189 | |
3851 | 190 // Avoid back to back some instructions on some CPUs. |
191 bool avoid_back_to_back() const { return (flags() & Flag_avoid_back_to_back) != 0; } | |
192 | |
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193 // instruction implemented with a call |
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194 bool has_call() const { return (flags() & Flag_has_call) != 0; } |
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195 |
0 | 196 // First index in _in[] corresponding to operand, or -1 if there is none |
197 int operand_index(uint operand) const; | |
198 | |
199 // Register class input is expected in | |
200 virtual const RegMask &in_RegMask(uint) const; | |
201 | |
202 // cisc-spillable instructions redefine for use by in_RegMask | |
203 virtual const RegMask *cisc_RegMask() const { return NULL; } | |
204 | |
205 // If this instruction is a 2-address instruction, then return the | |
206 // index of the input which must match the output. Not nessecary | |
207 // for instructions which bind the input and output register to the | |
208 // same singleton regiser (e.g., Intel IDIV which binds AX to be | |
209 // both an input and an output). It is nessecary when the input and | |
210 // output have choices - but they must use the same choice. | |
211 virtual uint two_adr( ) const { return 0; } | |
212 | |
213 // Array of complex operand pointers. Each corresponds to zero or | |
214 // more leafs. Must be set by MachNode constructor to point to an | |
215 // internal array of MachOpers. The MachOper array is sized by | |
216 // specific MachNodes described in the ADL. | |
217 uint _num_opnds; | |
218 MachOper **_opnds; | |
219 uint num_opnds() const { return _num_opnds; } | |
220 | |
221 // Emit bytes into cbuf | |
222 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
223 // Size of instruction in bytes | |
224 virtual uint size(PhaseRegAlloc *ra_) const; | |
225 // Helper function that computes size by emitting code | |
226 virtual uint emit_size(PhaseRegAlloc *ra_) const; | |
227 | |
228 // Return the alignment required (in units of relocInfo::addr_unit()) | |
229 // for this instruction (must be a power of 2) | |
230 virtual int alignment_required() const { return 1; } | |
231 | |
232 // Return the padding (in bytes) to be emitted before this | |
233 // instruction to properly align it. | |
234 virtual int compute_padding(int current_offset) const { return 0; } | |
235 | |
236 // Return number of relocatable values contained in this instruction | |
237 virtual int reloc() const { return 0; } | |
238 | |
239 // Hash and compare over operands. Used to do GVN on machine Nodes. | |
240 virtual uint hash() const; | |
241 virtual uint cmp( const Node &n ) const; | |
242 | |
243 // Expand method for MachNode, replaces nodes representing pseudo | |
244 // instructions with a set of nodes which represent real machine | |
245 // instructions and compute the same value. | |
1203 | 246 virtual MachNode *Expand( State *, Node_List &proj_list, Node* mem ) { return this; } |
0 | 247 |
248 // Bottom_type call; value comes from operand0 | |
249 virtual const class Type *bottom_type() const { return _opnds[0]->type(); } | |
250 virtual uint ideal_reg() const { const Type *t = _opnds[0]->type(); return t == TypeInt::CC ? Op_RegFlags : Matcher::base2reg[t->base()]; } | |
251 | |
252 // If this is a memory op, return the base pointer and fixed offset. | |
253 // If there are no such, return NULL. If there are multiple addresses | |
254 // or the address is indeterminate (rare cases) then return (Node*)-1, | |
255 // which serves as node bottom. | |
256 // If the offset is not statically determined, set it to Type::OffsetBot. | |
257 // This method is free to ignore stack slots if that helps. | |
258 #define TYPE_PTR_SENTINAL ((const TypePtr*)-1) | |
259 // Passing TYPE_PTR_SENTINAL as adr_type asks for computation of the adr_type if possible | |
260 const Node* get_base_and_disp(intptr_t &offset, const TypePtr* &adr_type) const; | |
261 | |
262 // Helper for get_base_and_disp: find the base and index input nodes. | |
263 // Returns the MachOper as determined by memory_operand(), for use, if | |
264 // needed by the caller. If (MachOper *)-1 is returned, base and index | |
265 // are set to NodeSentinel. If (MachOper *) NULL is returned, base and | |
266 // index are set to NULL. | |
267 const MachOper* memory_inputs(Node* &base, Node* &index) const; | |
268 | |
269 // Helper for memory_inputs: Which operand carries the necessary info? | |
270 // By default, returns NULL, which means there is no such operand. | |
271 // If it returns (MachOper*)-1, this means there are multiple memories. | |
272 virtual const MachOper* memory_operand() const { return NULL; } | |
273 | |
274 // Call "get_base_and_disp" to decide which category of memory is used here. | |
275 virtual const class TypePtr *adr_type() const; | |
276 | |
277 // Apply peephole rule(s) to this instruction | |
278 virtual MachNode *peephole( Block *block, int block_index, PhaseRegAlloc *ra_, int &deleted, Compile* C ); | |
279 | |
280 // Top-level ideal Opcode matched | |
281 virtual int ideal_Opcode() const { return Op_Node; } | |
282 | |
283 // Adds the label for the case | |
284 virtual void add_case_label( int switch_val, Label* blockLabel); | |
285 | |
286 // Set the absolute address for methods | |
287 virtual void method_set( intptr_t addr ); | |
288 | |
289 // Should we clone rather than spill this instruction? | |
290 bool rematerialize() const; | |
291 | |
292 // Get the pipeline info | |
293 static const Pipeline *pipeline_class(); | |
294 virtual const Pipeline *pipeline() const; | |
295 | |
296 #ifndef PRODUCT | |
297 virtual const char *Name() const = 0; // Machine-specific name | |
298 virtual void dump_spec(outputStream *st) const; // Print per-node info | |
299 void dump_format(PhaseRegAlloc *ra, outputStream *st) const; // access to virtual | |
300 #endif | |
301 }; | |
302 | |
303 //------------------------------MachIdealNode---------------------------- | |
304 // Machine specific versions of nodes that must be defined by user. | |
305 // These are not converted by matcher from ideal nodes to machine nodes | |
306 // but are inserted into the code by the compiler. | |
307 class MachIdealNode : public MachNode { | |
308 public: | |
309 MachIdealNode( ) {} | |
310 | |
311 // Define the following defaults for non-matched machine nodes | |
312 virtual uint oper_input_base() const { return 0; } | |
313 virtual uint rule() const { return 9999999; } | |
314 virtual const class Type *bottom_type() const { return _opnds == NULL ? Type::CONTROL : MachNode::bottom_type(); } | |
315 }; | |
316 | |
317 //------------------------------MachTypeNode---------------------------- | |
318 // Machine Nodes that need to retain a known Type. | |
319 class MachTypeNode : public MachNode { | |
320 virtual uint size_of() const { return sizeof(*this); } // Size is bigger | |
321 public: | |
322 const Type *_bottom_type; | |
323 | |
324 virtual const class Type *bottom_type() const { return _bottom_type; } | |
325 #ifndef PRODUCT | |
326 virtual void dump_spec(outputStream *st) const; | |
327 #endif | |
328 }; | |
329 | |
330 //------------------------------MachBreakpointNode---------------------------- | |
331 // Machine breakpoint or interrupt Node | |
332 class MachBreakpointNode : public MachIdealNode { | |
333 public: | |
334 MachBreakpointNode( ) {} | |
335 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
336 virtual uint size(PhaseRegAlloc *ra_) const; | |
337 | |
338 #ifndef PRODUCT | |
339 virtual const char *Name() const { return "Breakpoint"; } | |
340 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
341 #endif | |
342 }; | |
343 | |
2008 | 344 //------------------------------MachConstantBaseNode-------------------------- |
345 // Machine node that represents the base address of the constant table. | |
346 class MachConstantBaseNode : public MachIdealNode { | |
347 public: | |
348 static const RegMask& _out_RegMask; // We need the out_RegMask statically in MachConstantNode::in_RegMask(). | |
349 | |
350 public: | |
351 MachConstantBaseNode() : MachIdealNode() { | |
352 init_class_id(Class_MachConstantBase); | |
353 } | |
354 virtual const class Type* bottom_type() const { return TypeRawPtr::NOTNULL; } | |
355 virtual uint ideal_reg() const { return Op_RegP; } | |
356 virtual uint oper_input_base() const { return 1; } | |
357 | |
358 virtual void emit(CodeBuffer& cbuf, PhaseRegAlloc* ra_) const; | |
359 virtual uint size(PhaseRegAlloc* ra_) const; | |
360 virtual bool pinned() const { return UseRDPCForConstantTableBase; } | |
361 | |
362 static const RegMask& static_out_RegMask() { return _out_RegMask; } | |
363 virtual const RegMask& out_RegMask() const { return static_out_RegMask(); } | |
364 | |
365 #ifndef PRODUCT | |
366 virtual const char* Name() const { return "MachConstantBaseNode"; } | |
367 virtual void format(PhaseRegAlloc*, outputStream* st) const; | |
368 #endif | |
369 }; | |
370 | |
371 //------------------------------MachConstantNode------------------------------- | |
372 // Machine node that holds a constant which is stored in the constant table. | |
373 class MachConstantNode : public MachNode { | |
374 protected: | |
375 Compile::Constant _constant; // This node's constant. | |
376 | |
377 public: | |
378 MachConstantNode() : MachNode() { | |
379 init_class_id(Class_MachConstant); | |
380 } | |
381 | |
382 virtual void eval_constant(Compile* C) { | |
383 #ifdef ASSERT | |
384 tty->print("missing MachConstantNode eval_constant function: "); | |
385 dump(); | |
386 #endif | |
387 ShouldNotCallThis(); | |
388 } | |
389 | |
390 virtual const RegMask &in_RegMask(uint idx) const { | |
391 if (idx == mach_constant_base_node_input()) | |
392 return MachConstantBaseNode::static_out_RegMask(); | |
393 return MachNode::in_RegMask(idx); | |
394 } | |
395 | |
396 // Input edge of MachConstantBaseNode. | |
397 uint mach_constant_base_node_input() const { return req() - 1; } | |
398 | |
399 int constant_offset(); | |
400 int constant_offset() const { return ((MachConstantNode*) this)->constant_offset(); } | |
401 }; | |
402 | |
0 | 403 //------------------------------MachUEPNode----------------------------------- |
404 // Machine Unvalidated Entry Point Node | |
405 class MachUEPNode : public MachIdealNode { | |
406 public: | |
407 MachUEPNode( ) {} | |
408 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
409 virtual uint size(PhaseRegAlloc *ra_) const; | |
410 | |
411 #ifndef PRODUCT | |
412 virtual const char *Name() const { return "Unvalidated-Entry-Point"; } | |
413 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
414 #endif | |
415 }; | |
416 | |
417 //------------------------------MachPrologNode-------------------------------- | |
418 // Machine function Prolog Node | |
419 class MachPrologNode : public MachIdealNode { | |
420 public: | |
421 MachPrologNode( ) {} | |
422 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
423 virtual uint size(PhaseRegAlloc *ra_) const; | |
424 virtual int reloc() const; | |
425 | |
426 #ifndef PRODUCT | |
427 virtual const char *Name() const { return "Prolog"; } | |
428 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
429 #endif | |
430 }; | |
431 | |
432 //------------------------------MachEpilogNode-------------------------------- | |
433 // Machine function Epilog Node | |
434 class MachEpilogNode : public MachIdealNode { | |
435 public: | |
436 MachEpilogNode(bool do_poll = false) : _do_polling(do_poll) {} | |
437 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
438 virtual uint size(PhaseRegAlloc *ra_) const; | |
439 virtual int reloc() const; | |
440 virtual const Pipeline *pipeline() const; | |
441 | |
442 private: | |
443 bool _do_polling; | |
444 | |
445 public: | |
446 bool do_polling() const { return _do_polling; } | |
447 | |
448 // Offset of safepoint from the beginning of the node | |
449 int safepoint_offset() const; | |
450 | |
451 #ifndef PRODUCT | |
452 virtual const char *Name() const { return "Epilog"; } | |
453 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
454 #endif | |
455 }; | |
456 | |
457 //------------------------------MachNopNode----------------------------------- | |
458 // Machine function Nop Node | |
459 class MachNopNode : public MachIdealNode { | |
460 private: | |
461 int _count; | |
462 public: | |
463 MachNopNode( ) : _count(1) {} | |
464 MachNopNode( int count ) : _count(count) {} | |
465 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
466 virtual uint size(PhaseRegAlloc *ra_) const; | |
467 | |
468 virtual const class Type *bottom_type() const { return Type::CONTROL; } | |
469 | |
470 virtual int ideal_Opcode() const { return Op_Con; } // bogus; see output.cpp | |
471 virtual const Pipeline *pipeline() const; | |
472 #ifndef PRODUCT | |
473 virtual const char *Name() const { return "Nop"; } | |
474 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
475 virtual void dump_spec(outputStream *st) const { } // No per-operand info | |
476 #endif | |
477 }; | |
478 | |
479 //------------------------------MachSpillCopyNode------------------------------ | |
480 // Machine SpillCopy Node. Copies 1 or 2 words from any location to any | |
481 // location (stack or register). | |
482 class MachSpillCopyNode : public MachIdealNode { | |
483 const RegMask *_in; // RegMask for input | |
484 const RegMask *_out; // RegMask for output | |
485 const Type *_type; | |
486 public: | |
487 MachSpillCopyNode( Node *n, const RegMask &in, const RegMask &out ) : | |
488 MachIdealNode(), _in(&in), _out(&out), _type(n->bottom_type()) { | |
489 init_class_id(Class_MachSpillCopy); | |
490 init_flags(Flag_is_Copy); | |
491 add_req(NULL); | |
492 add_req(n); | |
493 } | |
494 virtual uint size_of() const { return sizeof(*this); } | |
495 void set_out_RegMask(const RegMask &out) { _out = &out; } | |
496 void set_in_RegMask(const RegMask &in) { _in = ∈ } | |
497 virtual const RegMask &out_RegMask() const { return *_out; } | |
498 virtual const RegMask &in_RegMask(uint) const { return *_in; } | |
499 virtual const class Type *bottom_type() const { return _type; } | |
500 virtual uint ideal_reg() const { return Matcher::base2reg[_type->base()]; } | |
501 virtual uint oper_input_base() const { return 1; } | |
502 uint implementation( CodeBuffer *cbuf, PhaseRegAlloc *ra_, bool do_size, outputStream* st ) const; | |
503 | |
504 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
505 virtual uint size(PhaseRegAlloc *ra_) const; | |
506 | |
507 #ifndef PRODUCT | |
508 virtual const char *Name() const { return "MachSpillCopy"; } | |
509 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
510 #endif | |
511 }; | |
512 | |
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513 //------------------------------MachBranchNode-------------------------------- |
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514 // Abstract machine branch Node |
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515 class MachBranchNode : public MachIdealNode { |
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516 public: |
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517 MachBranchNode() : MachIdealNode() { |
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518 init_class_id(Class_MachBranch); |
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519 } |
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520 virtual void label_set(Label* label, uint block_num) = 0; |
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521 virtual void save_label(Label** label, uint* block_num) = 0; |
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522 |
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523 // Support for short branches |
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524 virtual MachNode *short_branch_version(Compile* C) { return NULL; } |
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525 |
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526 virtual bool pinned() const { return true; }; |
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527 }; |
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528 |
0 | 529 //------------------------------MachNullChkNode-------------------------------- |
530 // Machine-dependent null-pointer-check Node. Points a real MachNode that is | |
531 // also some kind of memory op. Turns the indicated MachNode into a | |
532 // conditional branch with good latency on the ptr-not-null path and awful | |
533 // latency on the pointer-is-null path. | |
534 | |
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535 class MachNullCheckNode : public MachBranchNode { |
0 | 536 public: |
537 const uint _vidx; // Index of memop being tested | |
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538 MachNullCheckNode( Node *ctrl, Node *memop, uint vidx ) : MachBranchNode(), _vidx(vidx) { |
0 | 539 init_class_id(Class_MachNullCheck); |
540 add_req(ctrl); | |
541 add_req(memop); | |
542 } | |
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543 virtual uint size_of() const { return sizeof(*this); } |
0 | 544 |
545 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
3839 | 546 virtual void label_set(Label* label, uint block_num); |
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547 virtual void save_label(Label** label, uint* block_num); |
0 | 548 virtual void negate() { } |
549 virtual const class Type *bottom_type() const { return TypeTuple::IFBOTH; } | |
550 virtual uint ideal_reg() const { return NotAMachineReg; } | |
551 virtual const RegMask &in_RegMask(uint) const; | |
552 virtual const RegMask &out_RegMask() const { return RegMask::Empty; } | |
553 #ifndef PRODUCT | |
554 virtual const char *Name() const { return "NullCheck"; } | |
555 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
556 #endif | |
557 }; | |
558 | |
559 //------------------------------MachProjNode---------------------------------- | |
560 // Machine-dependent Ideal projections (how is that for an oxymoron). Really | |
561 // just MachNodes made by the Ideal world that replicate simple projections | |
562 // but with machine-dependent input & output register masks. Generally | |
563 // produced as part of calling conventions. Normally I make MachNodes as part | |
564 // of the Matcher process, but the Matcher is ill suited to issues involving | |
565 // frame handling, so frame handling is all done in the Ideal world with | |
566 // occasional callbacks to the machine model for important info. | |
567 class MachProjNode : public ProjNode { | |
568 public: | |
3842 | 569 MachProjNode( Node *multi, uint con, const RegMask &out, uint ideal_reg ) : ProjNode(multi,con), _rout(out), _ideal_reg(ideal_reg) { |
570 init_class_id(Class_MachProj); | |
571 } | |
0 | 572 RegMask _rout; |
573 const uint _ideal_reg; | |
574 enum projType { | |
575 unmatched_proj = 0, // Projs for Control, I/O, memory not matched | |
576 fat_proj = 999 // Projs killing many regs, defined by _rout | |
577 }; | |
578 virtual int Opcode() const; | |
579 virtual const Type *bottom_type() const; | |
580 virtual const TypePtr *adr_type() const; | |
581 virtual const RegMask &in_RegMask(uint) const { return RegMask::Empty; } | |
582 virtual const RegMask &out_RegMask() const { return _rout; } | |
583 virtual uint ideal_reg() const { return _ideal_reg; } | |
584 // Need size_of() for virtual ProjNode::clone() | |
585 virtual uint size_of() const { return sizeof(MachProjNode); } | |
586 #ifndef PRODUCT | |
587 virtual void dump_spec(outputStream *st) const; | |
588 #endif | |
589 }; | |
590 | |
591 //------------------------------MachIfNode------------------------------------- | |
592 // Machine-specific versions of IfNodes | |
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593 class MachIfNode : public MachBranchNode { |
0 | 594 virtual uint size_of() const { return sizeof(*this); } // Size is bigger |
595 public: | |
596 float _prob; // Probability branch goes either way | |
597 float _fcnt; // Frequency counter | |
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598 MachIfNode() : MachBranchNode() { |
0 | 599 init_class_id(Class_MachIf); |
600 } | |
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601 // Negate conditional branches. |
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602 virtual void negate() = 0; |
0 | 603 #ifndef PRODUCT |
604 virtual void dump_spec(outputStream *st) const; | |
605 #endif | |
606 }; | |
607 | |
3842 | 608 //------------------------------MachGotoNode----------------------------------- |
609 // Machine-specific versions of GotoNodes | |
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610 class MachGotoNode : public MachBranchNode { |
3842 | 611 public: |
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612 MachGotoNode() : MachBranchNode() { |
3842 | 613 init_class_id(Class_MachGoto); |
614 } | |
615 }; | |
616 | |
0 | 617 //------------------------------MachFastLockNode------------------------------------- |
618 // Machine-specific versions of FastLockNodes | |
619 class MachFastLockNode : public MachNode { | |
620 virtual uint size_of() const { return sizeof(*this); } // Size is bigger | |
621 public: | |
622 BiasedLockingCounters* _counters; | |
623 | |
624 MachFastLockNode() : MachNode() {} | |
625 }; | |
626 | |
627 //------------------------------MachReturnNode-------------------------------- | |
628 // Machine-specific versions of subroutine returns | |
629 class MachReturnNode : public MachNode { | |
630 virtual uint size_of() const; // Size is bigger | |
631 public: | |
632 RegMask *_in_rms; // Input register masks, set during allocation | |
633 ReallocMark _nesting; // assertion check for reallocations | |
634 const TypePtr* _adr_type; // memory effects of call or return | |
635 MachReturnNode() : MachNode() { | |
636 init_class_id(Class_MachReturn); | |
637 _adr_type = TypePtr::BOTTOM; // the default: all of memory | |
638 } | |
639 | |
640 void set_adr_type(const TypePtr* atp) { _adr_type = atp; } | |
641 | |
642 virtual const RegMask &in_RegMask(uint) const; | |
643 virtual bool pinned() const { return true; }; | |
644 virtual const TypePtr *adr_type() const; | |
645 }; | |
646 | |
647 //------------------------------MachSafePointNode----------------------------- | |
648 // Machine-specific versions of safepoints | |
649 class MachSafePointNode : public MachReturnNode { | |
650 public: | |
651 OopMap* _oop_map; // Array of OopMap info (8-bit char) for GC | |
652 JVMState* _jvms; // Pointer to list of JVM State Objects | |
653 uint _jvmadj; // Extra delta to jvms indexes (mach. args) | |
654 OopMap* oop_map() const { return _oop_map; } | |
655 void set_oop_map(OopMap* om) { _oop_map = om; } | |
656 | |
657 MachSafePointNode() : MachReturnNode(), _oop_map(NULL), _jvms(NULL), _jvmadj(0) { | |
658 init_class_id(Class_MachSafePoint); | |
659 } | |
660 | |
661 virtual JVMState* jvms() const { return _jvms; } | |
662 void set_jvms(JVMState* s) { | |
663 _jvms = s; | |
664 } | |
665 virtual const Type *bottom_type() const; | |
666 | |
667 virtual const RegMask &in_RegMask(uint) const; | |
668 | |
669 // Functionality from old debug nodes | |
670 Node *returnadr() const { return in(TypeFunc::ReturnAdr); } | |
671 Node *frameptr () const { return in(TypeFunc::FramePtr); } | |
672 | |
673 Node *local(const JVMState* jvms, uint idx) const { | |
674 assert(verify_jvms(jvms), "jvms must match"); | |
675 return in(_jvmadj + jvms->locoff() + idx); | |
676 } | |
677 Node *stack(const JVMState* jvms, uint idx) const { | |
678 assert(verify_jvms(jvms), "jvms must match"); | |
679 return in(_jvmadj + jvms->stkoff() + idx); | |
680 } | |
681 Node *monitor_obj(const JVMState* jvms, uint idx) const { | |
682 assert(verify_jvms(jvms), "jvms must match"); | |
683 return in(_jvmadj + jvms->monitor_obj_offset(idx)); | |
684 } | |
685 Node *monitor_box(const JVMState* jvms, uint idx) const { | |
686 assert(verify_jvms(jvms), "jvms must match"); | |
687 return in(_jvmadj + jvms->monitor_box_offset(idx)); | |
688 } | |
689 void set_local(const JVMState* jvms, uint idx, Node *c) { | |
690 assert(verify_jvms(jvms), "jvms must match"); | |
691 set_req(_jvmadj + jvms->locoff() + idx, c); | |
692 } | |
693 void set_stack(const JVMState* jvms, uint idx, Node *c) { | |
694 assert(verify_jvms(jvms), "jvms must match"); | |
695 set_req(_jvmadj + jvms->stkoff() + idx, c); | |
696 } | |
697 void set_monitor(const JVMState* jvms, uint idx, Node *c) { | |
698 assert(verify_jvms(jvms), "jvms must match"); | |
699 set_req(_jvmadj + jvms->monoff() + idx, c); | |
700 } | |
701 }; | |
702 | |
703 //------------------------------MachCallNode---------------------------------- | |
704 // Machine-specific versions of subroutine calls | |
705 class MachCallNode : public MachSafePointNode { | |
706 protected: | |
707 virtual uint hash() const { return NO_HASH; } // CFG nodes do not hash | |
708 virtual uint cmp( const Node &n ) const; | |
709 virtual uint size_of() const = 0; // Size is bigger | |
710 public: | |
711 const TypeFunc *_tf; // Function type | |
712 address _entry_point; // Address of the method being called | |
713 float _cnt; // Estimate of number of times called | |
714 uint _argsize; // Size of argument block on stack | |
715 | |
716 const TypeFunc* tf() const { return _tf; } | |
717 const address entry_point() const { return _entry_point; } | |
718 const float cnt() const { return _cnt; } | |
719 uint argsize() const { return _argsize; } | |
720 | |
721 void set_tf(const TypeFunc* tf) { _tf = tf; } | |
722 void set_entry_point(address p) { _entry_point = p; } | |
723 void set_cnt(float c) { _cnt = c; } | |
724 void set_argsize(int s) { _argsize = s; } | |
725 | |
726 MachCallNode() : MachSafePointNode() { | |
727 init_class_id(Class_MachCall); | |
728 } | |
729 | |
730 virtual const Type *bottom_type() const; | |
731 virtual bool pinned() const { return false; } | |
732 virtual const Type *Value( PhaseTransform *phase ) const; | |
733 virtual const RegMask &in_RegMask(uint) const; | |
734 virtual int ret_addr_offset() { return 0; } | |
735 | |
736 bool returns_long() const { return tf()->return_type() == T_LONG; } | |
737 bool return_value_is_used() const; | |
738 #ifndef PRODUCT | |
739 virtual void dump_spec(outputStream *st) const; | |
740 #endif | |
741 }; | |
742 | |
743 //------------------------------MachCallJavaNode------------------------------ | |
744 // "Base" class for machine-specific versions of subroutine calls | |
745 class MachCallJavaNode : public MachCallNode { | |
746 protected: | |
747 virtual uint cmp( const Node &n ) const; | |
748 virtual uint size_of() const; // Size is bigger | |
749 public: | |
750 ciMethod* _method; // Method being direct called | |
751 int _bci; // Byte Code index of call byte code | |
752 bool _optimized_virtual; // Tells if node is a static call or an optimized virtual | |
1137 | 753 bool _method_handle_invoke; // Tells if the call has to preserve SP |
0 | 754 MachCallJavaNode() : MachCallNode() { |
755 init_class_id(Class_MachCallJava); | |
756 } | |
1137 | 757 |
758 virtual const RegMask &in_RegMask(uint) const; | |
759 | |
0 | 760 #ifndef PRODUCT |
761 virtual void dump_spec(outputStream *st) const; | |
762 #endif | |
763 }; | |
764 | |
765 //------------------------------MachCallStaticJavaNode------------------------ | |
766 // Machine-specific versions of monomorphic subroutine calls | |
767 class MachCallStaticJavaNode : public MachCallJavaNode { | |
768 virtual uint cmp( const Node &n ) const; | |
769 virtual uint size_of() const; // Size is bigger | |
770 public: | |
771 const char *_name; // Runtime wrapper name | |
772 MachCallStaticJavaNode() : MachCallJavaNode() { | |
773 init_class_id(Class_MachCallStaticJava); | |
774 } | |
775 | |
776 // If this is an uncommon trap, return the request code, else zero. | |
777 int uncommon_trap_request() const; | |
778 | |
779 virtual int ret_addr_offset(); | |
780 #ifndef PRODUCT | |
781 virtual void dump_spec(outputStream *st) const; | |
782 void dump_trap_args(outputStream *st) const; | |
783 #endif | |
784 }; | |
785 | |
786 //------------------------------MachCallDynamicJavaNode------------------------ | |
787 // Machine-specific versions of possibly megamorphic subroutine calls | |
788 class MachCallDynamicJavaNode : public MachCallJavaNode { | |
789 public: | |
790 int _vtable_index; | |
791 MachCallDynamicJavaNode() : MachCallJavaNode() { | |
792 init_class_id(Class_MachCallDynamicJava); | |
793 DEBUG_ONLY(_vtable_index = -99); // throw an assert if uninitialized | |
794 } | |
795 virtual int ret_addr_offset(); | |
796 #ifndef PRODUCT | |
797 virtual void dump_spec(outputStream *st) const; | |
798 #endif | |
799 }; | |
800 | |
801 //------------------------------MachCallRuntimeNode---------------------------- | |
802 // Machine-specific versions of subroutine calls | |
803 class MachCallRuntimeNode : public MachCallNode { | |
804 virtual uint cmp( const Node &n ) const; | |
805 virtual uint size_of() const; // Size is bigger | |
806 public: | |
807 const char *_name; // Printable name, if _method is NULL | |
808 MachCallRuntimeNode() : MachCallNode() { | |
809 init_class_id(Class_MachCallRuntime); | |
810 } | |
811 virtual int ret_addr_offset(); | |
812 #ifndef PRODUCT | |
813 virtual void dump_spec(outputStream *st) const; | |
814 #endif | |
815 }; | |
816 | |
817 class MachCallLeafNode: public MachCallRuntimeNode { | |
818 public: | |
819 MachCallLeafNode() : MachCallRuntimeNode() { | |
820 init_class_id(Class_MachCallLeaf); | |
821 } | |
822 }; | |
823 | |
824 //------------------------------MachHaltNode----------------------------------- | |
825 // Machine-specific versions of halt nodes | |
826 class MachHaltNode : public MachReturnNode { | |
827 public: | |
828 virtual JVMState* jvms() const; | |
829 }; | |
830 | |
831 | |
832 //------------------------------MachTempNode----------------------------------- | |
833 // Node used by the adlc to construct inputs to represent temporary registers | |
834 class MachTempNode : public MachNode { | |
835 private: | |
836 MachOper *_opnd_array[1]; | |
837 | |
838 public: | |
839 virtual const RegMask &out_RegMask() const { return *_opnds[0]->in_RegMask(0); } | |
840 virtual uint rule() const { return 9999999; } | |
841 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {} | |
842 | |
843 MachTempNode(MachOper* oper) { | |
844 init_class_id(Class_MachTemp); | |
845 _num_opnds = 1; | |
846 _opnds = _opnd_array; | |
847 add_req(NULL); | |
848 _opnds[0] = oper; | |
849 } | |
850 virtual uint size_of() const { return sizeof(MachTempNode); } | |
851 | |
852 #ifndef PRODUCT | |
853 virtual void format(PhaseRegAlloc *, outputStream *st ) const {} | |
854 virtual const char *Name() const { return "MachTemp";} | |
855 #endif | |
856 }; | |
857 | |
858 | |
859 | |
860 //------------------------------labelOper-------------------------------------- | |
861 // Machine-independent version of label operand | |
862 class labelOper : public MachOper { | |
863 private: | |
864 virtual uint num_edges() const { return 0; } | |
865 public: | |
866 // Supported for fixed size branches | |
867 Label* _label; // Label for branch(es) | |
868 | |
869 uint _block_num; | |
870 | |
871 labelOper() : _block_num(0), _label(0) {} | |
872 | |
873 labelOper(Label* label, uint block_num) : _label(label), _block_num(block_num) {} | |
874 | |
875 labelOper(labelOper* l) : _label(l->_label) , _block_num(l->_block_num) {} | |
876 | |
877 virtual MachOper *clone(Compile* C) const; | |
878 | |
3839 | 879 virtual Label *label() const { assert(_label != NULL, "need Label"); return _label; } |
0 | 880 |
881 virtual uint opcode() const; | |
882 | |
883 virtual uint hash() const; | |
884 virtual uint cmp( const MachOper &oper ) const; | |
885 #ifndef PRODUCT | |
886 virtual const char *Name() const { return "Label";} | |
887 | |
888 virtual void int_format(PhaseRegAlloc *ra, const MachNode *node, outputStream *st) const; | |
889 virtual void ext_format(PhaseRegAlloc *ra, const MachNode *node, int idx, outputStream *st) const { int_format( ra, node, st ); } | |
890 #endif | |
891 }; | |
892 | |
893 | |
894 //------------------------------methodOper-------------------------------------- | |
895 // Machine-independent version of method operand | |
896 class methodOper : public MachOper { | |
897 private: | |
898 virtual uint num_edges() const { return 0; } | |
899 public: | |
900 intptr_t _method; // Address of method | |
901 methodOper() : _method(0) {} | |
902 methodOper(intptr_t method) : _method(method) {} | |
903 | |
904 virtual MachOper *clone(Compile* C) const; | |
905 | |
906 virtual intptr_t method() const { return _method; } | |
907 | |
908 virtual uint opcode() const; | |
909 | |
910 virtual uint hash() const; | |
911 virtual uint cmp( const MachOper &oper ) const; | |
912 #ifndef PRODUCT | |
913 virtual const char *Name() const { return "Method";} | |
914 | |
915 virtual void int_format(PhaseRegAlloc *ra, const MachNode *node, outputStream *st) const; | |
916 virtual void ext_format(PhaseRegAlloc *ra, const MachNode *node, int idx, outputStream *st) const { int_format( ra, node, st ); } | |
917 #endif | |
918 }; | |
1972 | 919 |
920 #endif // SHARE_VM_OPTO_MACHNODE_HPP |