Mercurial > hg > graal-compiler
annotate src/share/vm/opto/machnode.hpp @ 2142:8012aa3ccede
4926272: methodOopDesc::method_from_bcp is unsafe
Reviewed-by: coleenp, jrose, kvn, dcubed
author | never |
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date | Thu, 13 Jan 2011 22:15:41 -0800 |
parents | 2f644f85485d |
children | 3d42f82cd811 |
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 virtual MachNode *short_branch_version(Compile* C) { return NULL; } | |
189 bool may_be_short_branch() const { return (flags() & Flag_may_be_short_branch) != 0; } | |
190 | |
191 // First index in _in[] corresponding to operand, or -1 if there is none | |
192 int operand_index(uint operand) const; | |
193 | |
194 // Register class input is expected in | |
195 virtual const RegMask &in_RegMask(uint) const; | |
196 | |
197 // cisc-spillable instructions redefine for use by in_RegMask | |
198 virtual const RegMask *cisc_RegMask() const { return NULL; } | |
199 | |
200 // If this instruction is a 2-address instruction, then return the | |
201 // index of the input which must match the output. Not nessecary | |
202 // for instructions which bind the input and output register to the | |
203 // same singleton regiser (e.g., Intel IDIV which binds AX to be | |
204 // both an input and an output). It is nessecary when the input and | |
205 // output have choices - but they must use the same choice. | |
206 virtual uint two_adr( ) const { return 0; } | |
207 | |
208 // Array of complex operand pointers. Each corresponds to zero or | |
209 // more leafs. Must be set by MachNode constructor to point to an | |
210 // internal array of MachOpers. The MachOper array is sized by | |
211 // specific MachNodes described in the ADL. | |
212 uint _num_opnds; | |
213 MachOper **_opnds; | |
214 uint num_opnds() const { return _num_opnds; } | |
215 | |
216 // Emit bytes into cbuf | |
217 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
218 // Size of instruction in bytes | |
219 virtual uint size(PhaseRegAlloc *ra_) const; | |
220 // Helper function that computes size by emitting code | |
221 virtual uint emit_size(PhaseRegAlloc *ra_) const; | |
222 | |
223 // Return the alignment required (in units of relocInfo::addr_unit()) | |
224 // for this instruction (must be a power of 2) | |
225 virtual int alignment_required() const { return 1; } | |
226 | |
227 // Return the padding (in bytes) to be emitted before this | |
228 // instruction to properly align it. | |
229 virtual int compute_padding(int current_offset) const { return 0; } | |
230 | |
231 // Return number of relocatable values contained in this instruction | |
232 virtual int reloc() const { return 0; } | |
233 | |
234 // Hash and compare over operands. Used to do GVN on machine Nodes. | |
235 virtual uint hash() const; | |
236 virtual uint cmp( const Node &n ) const; | |
237 | |
238 // Expand method for MachNode, replaces nodes representing pseudo | |
239 // instructions with a set of nodes which represent real machine | |
240 // instructions and compute the same value. | |
1203 | 241 virtual MachNode *Expand( State *, Node_List &proj_list, Node* mem ) { return this; } |
0 | 242 |
243 // Bottom_type call; value comes from operand0 | |
244 virtual const class Type *bottom_type() const { return _opnds[0]->type(); } | |
245 virtual uint ideal_reg() const { const Type *t = _opnds[0]->type(); return t == TypeInt::CC ? Op_RegFlags : Matcher::base2reg[t->base()]; } | |
246 | |
247 // If this is a memory op, return the base pointer and fixed offset. | |
248 // If there are no such, return NULL. If there are multiple addresses | |
249 // or the address is indeterminate (rare cases) then return (Node*)-1, | |
250 // which serves as node bottom. | |
251 // If the offset is not statically determined, set it to Type::OffsetBot. | |
252 // This method is free to ignore stack slots if that helps. | |
253 #define TYPE_PTR_SENTINAL ((const TypePtr*)-1) | |
254 // Passing TYPE_PTR_SENTINAL as adr_type asks for computation of the adr_type if possible | |
255 const Node* get_base_and_disp(intptr_t &offset, const TypePtr* &adr_type) const; | |
256 | |
257 // Helper for get_base_and_disp: find the base and index input nodes. | |
258 // Returns the MachOper as determined by memory_operand(), for use, if | |
259 // needed by the caller. If (MachOper *)-1 is returned, base and index | |
260 // are set to NodeSentinel. If (MachOper *) NULL is returned, base and | |
261 // index are set to NULL. | |
262 const MachOper* memory_inputs(Node* &base, Node* &index) const; | |
263 | |
264 // Helper for memory_inputs: Which operand carries the necessary info? | |
265 // By default, returns NULL, which means there is no such operand. | |
266 // If it returns (MachOper*)-1, this means there are multiple memories. | |
267 virtual const MachOper* memory_operand() const { return NULL; } | |
268 | |
269 // Call "get_base_and_disp" to decide which category of memory is used here. | |
270 virtual const class TypePtr *adr_type() const; | |
271 | |
272 // Negate conditional branches. Error for non-branch Nodes | |
273 virtual void negate(); | |
274 | |
275 // Apply peephole rule(s) to this instruction | |
276 virtual MachNode *peephole( Block *block, int block_index, PhaseRegAlloc *ra_, int &deleted, Compile* C ); | |
277 | |
278 // Check for PC-Relative addressing | |
279 bool is_pc_relative() const { return (flags() & Flag_is_pc_relative) != 0; } | |
280 | |
281 // Top-level ideal Opcode matched | |
282 virtual int ideal_Opcode() const { return Op_Node; } | |
283 | |
284 // Set the branch inside jump MachNodes. Error for non-branch Nodes. | |
285 virtual void label_set( Label& label, uint block_num ); | |
286 | |
287 // Adds the label for the case | |
288 virtual void add_case_label( int switch_val, Label* blockLabel); | |
289 | |
290 // Set the absolute address for methods | |
291 virtual void method_set( intptr_t addr ); | |
292 | |
293 // Should we clone rather than spill this instruction? | |
294 bool rematerialize() const; | |
295 | |
296 // Get the pipeline info | |
297 static const Pipeline *pipeline_class(); | |
298 virtual const Pipeline *pipeline() const; | |
299 | |
300 #ifndef PRODUCT | |
301 virtual const char *Name() const = 0; // Machine-specific name | |
302 virtual void dump_spec(outputStream *st) const; // Print per-node info | |
303 void dump_format(PhaseRegAlloc *ra, outputStream *st) const; // access to virtual | |
304 #endif | |
305 }; | |
306 | |
307 //------------------------------MachIdealNode---------------------------- | |
308 // Machine specific versions of nodes that must be defined by user. | |
309 // These are not converted by matcher from ideal nodes to machine nodes | |
310 // but are inserted into the code by the compiler. | |
311 class MachIdealNode : public MachNode { | |
312 public: | |
313 MachIdealNode( ) {} | |
314 | |
315 // Define the following defaults for non-matched machine nodes | |
316 virtual uint oper_input_base() const { return 0; } | |
317 virtual uint rule() const { return 9999999; } | |
318 virtual const class Type *bottom_type() const { return _opnds == NULL ? Type::CONTROL : MachNode::bottom_type(); } | |
319 }; | |
320 | |
321 //------------------------------MachTypeNode---------------------------- | |
322 // Machine Nodes that need to retain a known Type. | |
323 class MachTypeNode : public MachNode { | |
324 virtual uint size_of() const { return sizeof(*this); } // Size is bigger | |
325 public: | |
326 const Type *_bottom_type; | |
327 | |
328 virtual const class Type *bottom_type() const { return _bottom_type; } | |
329 #ifndef PRODUCT | |
330 virtual void dump_spec(outputStream *st) const; | |
331 #endif | |
332 }; | |
333 | |
334 //------------------------------MachBreakpointNode---------------------------- | |
335 // Machine breakpoint or interrupt Node | |
336 class MachBreakpointNode : public MachIdealNode { | |
337 public: | |
338 MachBreakpointNode( ) {} | |
339 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
340 virtual uint size(PhaseRegAlloc *ra_) const; | |
341 | |
342 #ifndef PRODUCT | |
343 virtual const char *Name() const { return "Breakpoint"; } | |
344 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
345 #endif | |
346 }; | |
347 | |
2008 | 348 //------------------------------MachConstantBaseNode-------------------------- |
349 // Machine node that represents the base address of the constant table. | |
350 class MachConstantBaseNode : public MachIdealNode { | |
351 public: | |
352 static const RegMask& _out_RegMask; // We need the out_RegMask statically in MachConstantNode::in_RegMask(). | |
353 | |
354 public: | |
355 MachConstantBaseNode() : MachIdealNode() { | |
356 init_class_id(Class_MachConstantBase); | |
357 } | |
358 virtual const class Type* bottom_type() const { return TypeRawPtr::NOTNULL; } | |
359 virtual uint ideal_reg() const { return Op_RegP; } | |
360 virtual uint oper_input_base() const { return 1; } | |
361 | |
362 virtual void emit(CodeBuffer& cbuf, PhaseRegAlloc* ra_) const; | |
363 virtual uint size(PhaseRegAlloc* ra_) const; | |
364 virtual bool pinned() const { return UseRDPCForConstantTableBase; } | |
365 | |
366 static const RegMask& static_out_RegMask() { return _out_RegMask; } | |
367 virtual const RegMask& out_RegMask() const { return static_out_RegMask(); } | |
368 | |
369 #ifndef PRODUCT | |
370 virtual const char* Name() const { return "MachConstantBaseNode"; } | |
371 virtual void format(PhaseRegAlloc*, outputStream* st) const; | |
372 #endif | |
373 }; | |
374 | |
375 //------------------------------MachConstantNode------------------------------- | |
376 // Machine node that holds a constant which is stored in the constant table. | |
377 class MachConstantNode : public MachNode { | |
378 protected: | |
379 Compile::Constant _constant; // This node's constant. | |
380 | |
381 public: | |
382 MachConstantNode() : MachNode() { | |
383 init_class_id(Class_MachConstant); | |
384 } | |
385 | |
386 virtual void eval_constant(Compile* C) { | |
387 #ifdef ASSERT | |
388 tty->print("missing MachConstantNode eval_constant function: "); | |
389 dump(); | |
390 #endif | |
391 ShouldNotCallThis(); | |
392 } | |
393 | |
394 virtual const RegMask &in_RegMask(uint idx) const { | |
395 if (idx == mach_constant_base_node_input()) | |
396 return MachConstantBaseNode::static_out_RegMask(); | |
397 return MachNode::in_RegMask(idx); | |
398 } | |
399 | |
400 // Input edge of MachConstantBaseNode. | |
401 uint mach_constant_base_node_input() const { return req() - 1; } | |
402 | |
403 int constant_offset(); | |
404 int constant_offset() const { return ((MachConstantNode*) this)->constant_offset(); } | |
405 }; | |
406 | |
0 | 407 //------------------------------MachUEPNode----------------------------------- |
408 // Machine Unvalidated Entry Point Node | |
409 class MachUEPNode : public MachIdealNode { | |
410 public: | |
411 MachUEPNode( ) {} | |
412 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
413 virtual uint size(PhaseRegAlloc *ra_) const; | |
414 | |
415 #ifndef PRODUCT | |
416 virtual const char *Name() const { return "Unvalidated-Entry-Point"; } | |
417 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
418 #endif | |
419 }; | |
420 | |
421 //------------------------------MachPrologNode-------------------------------- | |
422 // Machine function Prolog Node | |
423 class MachPrologNode : public MachIdealNode { | |
424 public: | |
425 MachPrologNode( ) {} | |
426 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
427 virtual uint size(PhaseRegAlloc *ra_) const; | |
428 virtual int reloc() const; | |
429 | |
430 #ifndef PRODUCT | |
431 virtual const char *Name() const { return "Prolog"; } | |
432 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
433 #endif | |
434 }; | |
435 | |
436 //------------------------------MachEpilogNode-------------------------------- | |
437 // Machine function Epilog Node | |
438 class MachEpilogNode : public MachIdealNode { | |
439 public: | |
440 MachEpilogNode(bool do_poll = false) : _do_polling(do_poll) {} | |
441 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
442 virtual uint size(PhaseRegAlloc *ra_) const; | |
443 virtual int reloc() const; | |
444 virtual const Pipeline *pipeline() const; | |
445 | |
446 private: | |
447 bool _do_polling; | |
448 | |
449 public: | |
450 bool do_polling() const { return _do_polling; } | |
451 | |
452 // Offset of safepoint from the beginning of the node | |
453 int safepoint_offset() const; | |
454 | |
455 #ifndef PRODUCT | |
456 virtual const char *Name() const { return "Epilog"; } | |
457 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
458 #endif | |
459 }; | |
460 | |
461 //------------------------------MachNopNode----------------------------------- | |
462 // Machine function Nop Node | |
463 class MachNopNode : public MachIdealNode { | |
464 private: | |
465 int _count; | |
466 public: | |
467 MachNopNode( ) : _count(1) {} | |
468 MachNopNode( int count ) : _count(count) {} | |
469 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
470 virtual uint size(PhaseRegAlloc *ra_) const; | |
471 | |
472 virtual const class Type *bottom_type() const { return Type::CONTROL; } | |
473 | |
474 virtual int ideal_Opcode() const { return Op_Con; } // bogus; see output.cpp | |
475 virtual const Pipeline *pipeline() const; | |
476 #ifndef PRODUCT | |
477 virtual const char *Name() const { return "Nop"; } | |
478 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
479 virtual void dump_spec(outputStream *st) const { } // No per-operand info | |
480 #endif | |
481 }; | |
482 | |
483 //------------------------------MachSpillCopyNode------------------------------ | |
484 // Machine SpillCopy Node. Copies 1 or 2 words from any location to any | |
485 // location (stack or register). | |
486 class MachSpillCopyNode : public MachIdealNode { | |
487 const RegMask *_in; // RegMask for input | |
488 const RegMask *_out; // RegMask for output | |
489 const Type *_type; | |
490 public: | |
491 MachSpillCopyNode( Node *n, const RegMask &in, const RegMask &out ) : | |
492 MachIdealNode(), _in(&in), _out(&out), _type(n->bottom_type()) { | |
493 init_class_id(Class_MachSpillCopy); | |
494 init_flags(Flag_is_Copy); | |
495 add_req(NULL); | |
496 add_req(n); | |
497 } | |
498 virtual uint size_of() const { return sizeof(*this); } | |
499 void set_out_RegMask(const RegMask &out) { _out = &out; } | |
500 void set_in_RegMask(const RegMask &in) { _in = ∈ } | |
501 virtual const RegMask &out_RegMask() const { return *_out; } | |
502 virtual const RegMask &in_RegMask(uint) const { return *_in; } | |
503 virtual const class Type *bottom_type() const { return _type; } | |
504 virtual uint ideal_reg() const { return Matcher::base2reg[_type->base()]; } | |
505 virtual uint oper_input_base() const { return 1; } | |
506 uint implementation( CodeBuffer *cbuf, PhaseRegAlloc *ra_, bool do_size, outputStream* st ) const; | |
507 | |
508 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
509 virtual uint size(PhaseRegAlloc *ra_) const; | |
510 | |
511 #ifndef PRODUCT | |
512 virtual const char *Name() const { return "MachSpillCopy"; } | |
513 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
514 #endif | |
515 }; | |
516 | |
517 //------------------------------MachNullChkNode-------------------------------- | |
518 // Machine-dependent null-pointer-check Node. Points a real MachNode that is | |
519 // also some kind of memory op. Turns the indicated MachNode into a | |
520 // conditional branch with good latency on the ptr-not-null path and awful | |
521 // latency on the pointer-is-null path. | |
522 | |
523 class MachNullCheckNode : public MachIdealNode { | |
524 public: | |
525 const uint _vidx; // Index of memop being tested | |
526 MachNullCheckNode( Node *ctrl, Node *memop, uint vidx ) : MachIdealNode(), _vidx(vidx) { | |
527 init_class_id(Class_MachNullCheck); | |
528 init_flags(Flag_is_Branch | Flag_is_pc_relative); | |
529 add_req(ctrl); | |
530 add_req(memop); | |
531 } | |
532 | |
533 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const; | |
534 virtual bool pinned() const { return true; }; | |
535 virtual void negate() { } | |
536 virtual const class Type *bottom_type() const { return TypeTuple::IFBOTH; } | |
537 virtual uint ideal_reg() const { return NotAMachineReg; } | |
538 virtual const RegMask &in_RegMask(uint) const; | |
539 virtual const RegMask &out_RegMask() const { return RegMask::Empty; } | |
540 #ifndef PRODUCT | |
541 virtual const char *Name() const { return "NullCheck"; } | |
542 virtual void format( PhaseRegAlloc *, outputStream *st ) const; | |
543 #endif | |
544 }; | |
545 | |
546 //------------------------------MachProjNode---------------------------------- | |
547 // Machine-dependent Ideal projections (how is that for an oxymoron). Really | |
548 // just MachNodes made by the Ideal world that replicate simple projections | |
549 // but with machine-dependent input & output register masks. Generally | |
550 // produced as part of calling conventions. Normally I make MachNodes as part | |
551 // of the Matcher process, but the Matcher is ill suited to issues involving | |
552 // frame handling, so frame handling is all done in the Ideal world with | |
553 // occasional callbacks to the machine model for important info. | |
554 class MachProjNode : public ProjNode { | |
555 public: | |
556 MachProjNode( Node *multi, uint con, const RegMask &out, uint ideal_reg ) : ProjNode(multi,con), _rout(out), _ideal_reg(ideal_reg) {} | |
557 RegMask _rout; | |
558 const uint _ideal_reg; | |
559 enum projType { | |
560 unmatched_proj = 0, // Projs for Control, I/O, memory not matched | |
561 fat_proj = 999 // Projs killing many regs, defined by _rout | |
562 }; | |
563 virtual int Opcode() const; | |
564 virtual const Type *bottom_type() const; | |
565 virtual const TypePtr *adr_type() const; | |
566 virtual const RegMask &in_RegMask(uint) const { return RegMask::Empty; } | |
567 virtual const RegMask &out_RegMask() const { return _rout; } | |
568 virtual uint ideal_reg() const { return _ideal_reg; } | |
569 // Need size_of() for virtual ProjNode::clone() | |
570 virtual uint size_of() const { return sizeof(MachProjNode); } | |
571 #ifndef PRODUCT | |
572 virtual void dump_spec(outputStream *st) const; | |
573 #endif | |
574 }; | |
575 | |
576 //------------------------------MachIfNode------------------------------------- | |
577 // Machine-specific versions of IfNodes | |
578 class MachIfNode : public MachNode { | |
579 virtual uint size_of() const { return sizeof(*this); } // Size is bigger | |
580 public: | |
581 float _prob; // Probability branch goes either way | |
582 float _fcnt; // Frequency counter | |
583 MachIfNode() : MachNode() { | |
584 init_class_id(Class_MachIf); | |
585 } | |
586 #ifndef PRODUCT | |
587 virtual void dump_spec(outputStream *st) const; | |
588 #endif | |
589 }; | |
590 | |
591 //------------------------------MachFastLockNode------------------------------------- | |
592 // Machine-specific versions of FastLockNodes | |
593 class MachFastLockNode : public MachNode { | |
594 virtual uint size_of() const { return sizeof(*this); } // Size is bigger | |
595 public: | |
596 BiasedLockingCounters* _counters; | |
597 | |
598 MachFastLockNode() : MachNode() {} | |
599 }; | |
600 | |
601 //------------------------------MachReturnNode-------------------------------- | |
602 // Machine-specific versions of subroutine returns | |
603 class MachReturnNode : public MachNode { | |
604 virtual uint size_of() const; // Size is bigger | |
605 public: | |
606 RegMask *_in_rms; // Input register masks, set during allocation | |
607 ReallocMark _nesting; // assertion check for reallocations | |
608 const TypePtr* _adr_type; // memory effects of call or return | |
609 MachReturnNode() : MachNode() { | |
610 init_class_id(Class_MachReturn); | |
611 _adr_type = TypePtr::BOTTOM; // the default: all of memory | |
612 } | |
613 | |
614 void set_adr_type(const TypePtr* atp) { _adr_type = atp; } | |
615 | |
616 virtual const RegMask &in_RegMask(uint) const; | |
617 virtual bool pinned() const { return true; }; | |
618 virtual const TypePtr *adr_type() const; | |
619 }; | |
620 | |
621 //------------------------------MachSafePointNode----------------------------- | |
622 // Machine-specific versions of safepoints | |
623 class MachSafePointNode : public MachReturnNode { | |
624 public: | |
625 OopMap* _oop_map; // Array of OopMap info (8-bit char) for GC | |
626 JVMState* _jvms; // Pointer to list of JVM State Objects | |
627 uint _jvmadj; // Extra delta to jvms indexes (mach. args) | |
628 OopMap* oop_map() const { return _oop_map; } | |
629 void set_oop_map(OopMap* om) { _oop_map = om; } | |
630 | |
631 MachSafePointNode() : MachReturnNode(), _oop_map(NULL), _jvms(NULL), _jvmadj(0) { | |
632 init_class_id(Class_MachSafePoint); | |
633 init_flags(Flag_is_safepoint_node); | |
634 } | |
635 | |
636 virtual JVMState* jvms() const { return _jvms; } | |
637 void set_jvms(JVMState* s) { | |
638 _jvms = s; | |
639 } | |
640 bool is_safepoint_node() const { return (flags() & Flag_is_safepoint_node) != 0; } | |
641 virtual const Type *bottom_type() const; | |
642 | |
643 virtual const RegMask &in_RegMask(uint) const; | |
644 | |
645 // Functionality from old debug nodes | |
646 Node *returnadr() const { return in(TypeFunc::ReturnAdr); } | |
647 Node *frameptr () const { return in(TypeFunc::FramePtr); } | |
648 | |
649 Node *local(const JVMState* jvms, uint idx) const { | |
650 assert(verify_jvms(jvms), "jvms must match"); | |
651 return in(_jvmadj + jvms->locoff() + idx); | |
652 } | |
653 Node *stack(const JVMState* jvms, uint idx) const { | |
654 assert(verify_jvms(jvms), "jvms must match"); | |
655 return in(_jvmadj + jvms->stkoff() + idx); | |
656 } | |
657 Node *monitor_obj(const JVMState* jvms, uint idx) const { | |
658 assert(verify_jvms(jvms), "jvms must match"); | |
659 return in(_jvmadj + jvms->monitor_obj_offset(idx)); | |
660 } | |
661 Node *monitor_box(const JVMState* jvms, uint idx) const { | |
662 assert(verify_jvms(jvms), "jvms must match"); | |
663 return in(_jvmadj + jvms->monitor_box_offset(idx)); | |
664 } | |
665 void set_local(const JVMState* jvms, uint idx, Node *c) { | |
666 assert(verify_jvms(jvms), "jvms must match"); | |
667 set_req(_jvmadj + jvms->locoff() + idx, c); | |
668 } | |
669 void set_stack(const JVMState* jvms, uint idx, Node *c) { | |
670 assert(verify_jvms(jvms), "jvms must match"); | |
671 set_req(_jvmadj + jvms->stkoff() + idx, c); | |
672 } | |
673 void set_monitor(const JVMState* jvms, uint idx, Node *c) { | |
674 assert(verify_jvms(jvms), "jvms must match"); | |
675 set_req(_jvmadj + jvms->monoff() + idx, c); | |
676 } | |
677 }; | |
678 | |
679 //------------------------------MachCallNode---------------------------------- | |
680 // Machine-specific versions of subroutine calls | |
681 class MachCallNode : public MachSafePointNode { | |
682 protected: | |
683 virtual uint hash() const { return NO_HASH; } // CFG nodes do not hash | |
684 virtual uint cmp( const Node &n ) const; | |
685 virtual uint size_of() const = 0; // Size is bigger | |
686 public: | |
687 const TypeFunc *_tf; // Function type | |
688 address _entry_point; // Address of the method being called | |
689 float _cnt; // Estimate of number of times called | |
690 uint _argsize; // Size of argument block on stack | |
691 | |
692 const TypeFunc* tf() const { return _tf; } | |
693 const address entry_point() const { return _entry_point; } | |
694 const float cnt() const { return _cnt; } | |
695 uint argsize() const { return _argsize; } | |
696 | |
697 void set_tf(const TypeFunc* tf) { _tf = tf; } | |
698 void set_entry_point(address p) { _entry_point = p; } | |
699 void set_cnt(float c) { _cnt = c; } | |
700 void set_argsize(int s) { _argsize = s; } | |
701 | |
702 MachCallNode() : MachSafePointNode() { | |
703 init_class_id(Class_MachCall); | |
704 init_flags(Flag_is_Call); | |
705 } | |
706 | |
707 virtual const Type *bottom_type() const; | |
708 virtual bool pinned() const { return false; } | |
709 virtual const Type *Value( PhaseTransform *phase ) const; | |
710 virtual const RegMask &in_RegMask(uint) const; | |
711 virtual int ret_addr_offset() { return 0; } | |
712 | |
713 bool returns_long() const { return tf()->return_type() == T_LONG; } | |
714 bool return_value_is_used() const; | |
715 #ifndef PRODUCT | |
716 virtual void dump_spec(outputStream *st) const; | |
717 #endif | |
718 }; | |
719 | |
720 //------------------------------MachCallJavaNode------------------------------ | |
721 // "Base" class for machine-specific versions of subroutine calls | |
722 class MachCallJavaNode : public MachCallNode { | |
723 protected: | |
724 virtual uint cmp( const Node &n ) const; | |
725 virtual uint size_of() const; // Size is bigger | |
726 public: | |
727 ciMethod* _method; // Method being direct called | |
728 int _bci; // Byte Code index of call byte code | |
729 bool _optimized_virtual; // Tells if node is a static call or an optimized virtual | |
1137 | 730 bool _method_handle_invoke; // Tells if the call has to preserve SP |
0 | 731 MachCallJavaNode() : MachCallNode() { |
732 init_class_id(Class_MachCallJava); | |
733 } | |
1137 | 734 |
735 virtual const RegMask &in_RegMask(uint) const; | |
736 | |
0 | 737 #ifndef PRODUCT |
738 virtual void dump_spec(outputStream *st) const; | |
739 #endif | |
740 }; | |
741 | |
742 //------------------------------MachCallStaticJavaNode------------------------ | |
743 // Machine-specific versions of monomorphic subroutine calls | |
744 class MachCallStaticJavaNode : public MachCallJavaNode { | |
745 virtual uint cmp( const Node &n ) const; | |
746 virtual uint size_of() const; // Size is bigger | |
747 public: | |
748 const char *_name; // Runtime wrapper name | |
749 MachCallStaticJavaNode() : MachCallJavaNode() { | |
750 init_class_id(Class_MachCallStaticJava); | |
751 } | |
752 | |
753 // If this is an uncommon trap, return the request code, else zero. | |
754 int uncommon_trap_request() const; | |
755 | |
756 virtual int ret_addr_offset(); | |
757 #ifndef PRODUCT | |
758 virtual void dump_spec(outputStream *st) const; | |
759 void dump_trap_args(outputStream *st) const; | |
760 #endif | |
761 }; | |
762 | |
763 //------------------------------MachCallDynamicJavaNode------------------------ | |
764 // Machine-specific versions of possibly megamorphic subroutine calls | |
765 class MachCallDynamicJavaNode : public MachCallJavaNode { | |
766 public: | |
767 int _vtable_index; | |
768 MachCallDynamicJavaNode() : MachCallJavaNode() { | |
769 init_class_id(Class_MachCallDynamicJava); | |
770 DEBUG_ONLY(_vtable_index = -99); // throw an assert if uninitialized | |
771 } | |
772 virtual int ret_addr_offset(); | |
773 #ifndef PRODUCT | |
774 virtual void dump_spec(outputStream *st) const; | |
775 #endif | |
776 }; | |
777 | |
778 //------------------------------MachCallRuntimeNode---------------------------- | |
779 // Machine-specific versions of subroutine calls | |
780 class MachCallRuntimeNode : public MachCallNode { | |
781 virtual uint cmp( const Node &n ) const; | |
782 virtual uint size_of() const; // Size is bigger | |
783 public: | |
784 const char *_name; // Printable name, if _method is NULL | |
785 MachCallRuntimeNode() : MachCallNode() { | |
786 init_class_id(Class_MachCallRuntime); | |
787 } | |
788 virtual int ret_addr_offset(); | |
789 #ifndef PRODUCT | |
790 virtual void dump_spec(outputStream *st) const; | |
791 #endif | |
792 }; | |
793 | |
794 class MachCallLeafNode: public MachCallRuntimeNode { | |
795 public: | |
796 MachCallLeafNode() : MachCallRuntimeNode() { | |
797 init_class_id(Class_MachCallLeaf); | |
798 } | |
799 }; | |
800 | |
801 //------------------------------MachHaltNode----------------------------------- | |
802 // Machine-specific versions of halt nodes | |
803 class MachHaltNode : public MachReturnNode { | |
804 public: | |
805 virtual JVMState* jvms() const; | |
806 }; | |
807 | |
808 | |
809 //------------------------------MachTempNode----------------------------------- | |
810 // Node used by the adlc to construct inputs to represent temporary registers | |
811 class MachTempNode : public MachNode { | |
812 private: | |
813 MachOper *_opnd_array[1]; | |
814 | |
815 public: | |
816 virtual const RegMask &out_RegMask() const { return *_opnds[0]->in_RegMask(0); } | |
817 virtual uint rule() const { return 9999999; } | |
818 virtual void emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {} | |
819 | |
820 MachTempNode(MachOper* oper) { | |
821 init_class_id(Class_MachTemp); | |
822 _num_opnds = 1; | |
823 _opnds = _opnd_array; | |
824 add_req(NULL); | |
825 _opnds[0] = oper; | |
826 } | |
827 virtual uint size_of() const { return sizeof(MachTempNode); } | |
828 | |
829 #ifndef PRODUCT | |
830 virtual void format(PhaseRegAlloc *, outputStream *st ) const {} | |
831 virtual const char *Name() const { return "MachTemp";} | |
832 #endif | |
833 }; | |
834 | |
835 | |
836 | |
837 //------------------------------labelOper-------------------------------------- | |
838 // Machine-independent version of label operand | |
839 class labelOper : public MachOper { | |
840 private: | |
841 virtual uint num_edges() const { return 0; } | |
842 public: | |
843 // Supported for fixed size branches | |
844 Label* _label; // Label for branch(es) | |
845 | |
846 uint _block_num; | |
847 | |
848 labelOper() : _block_num(0), _label(0) {} | |
849 | |
850 labelOper(Label* label, uint block_num) : _label(label), _block_num(block_num) {} | |
851 | |
852 labelOper(labelOper* l) : _label(l->_label) , _block_num(l->_block_num) {} | |
853 | |
854 virtual MachOper *clone(Compile* C) const; | |
855 | |
856 virtual Label *label() const { return _label; } | |
857 | |
858 virtual uint opcode() const; | |
859 | |
860 virtual uint hash() const; | |
861 virtual uint cmp( const MachOper &oper ) const; | |
862 #ifndef PRODUCT | |
863 virtual const char *Name() const { return "Label";} | |
864 | |
865 virtual void int_format(PhaseRegAlloc *ra, const MachNode *node, outputStream *st) const; | |
866 virtual void ext_format(PhaseRegAlloc *ra, const MachNode *node, int idx, outputStream *st) const { int_format( ra, node, st ); } | |
867 #endif | |
868 }; | |
869 | |
870 | |
871 //------------------------------methodOper-------------------------------------- | |
872 // Machine-independent version of method operand | |
873 class methodOper : public MachOper { | |
874 private: | |
875 virtual uint num_edges() const { return 0; } | |
876 public: | |
877 intptr_t _method; // Address of method | |
878 methodOper() : _method(0) {} | |
879 methodOper(intptr_t method) : _method(method) {} | |
880 | |
881 virtual MachOper *clone(Compile* C) const; | |
882 | |
883 virtual intptr_t method() const { return _method; } | |
884 | |
885 virtual uint opcode() const; | |
886 | |
887 virtual uint hash() const; | |
888 virtual uint cmp( const MachOper &oper ) const; | |
889 #ifndef PRODUCT | |
890 virtual const char *Name() const { return "Method";} | |
891 | |
892 virtual void int_format(PhaseRegAlloc *ra, const MachNode *node, outputStream *st) const; | |
893 virtual void ext_format(PhaseRegAlloc *ra, const MachNode *node, int idx, outputStream *st) const { int_format( ra, node, st ); } | |
894 #endif | |
895 }; | |
1972 | 896 |
897 #endif // SHARE_VM_OPTO_MACHNODE_HPP |