machnode.hpp revision 1915:2f644f85485d
1/* 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 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 34class BufferBlob; 35class CodeBuffer; 36class JVMState; 37class MachCallDynamicJavaNode; 38class MachCallJavaNode; 39class MachCallLeafNode; 40class MachCallNode; 41class MachCallRuntimeNode; 42class MachCallStaticJavaNode; 43class MachEpilogNode; 44class MachIfNode; 45class MachNullCheckNode; 46class MachOper; 47class MachProjNode; 48class MachPrologNode; 49class MachReturnNode; 50class MachSafePointNode; 51class MachSpillCopyNode; 52class Matcher; 53class PhaseRegAlloc; 54class RegMask; 55class State; 56 57//---------------------------MachOper------------------------------------------ 58class MachOper : public ResourceObj { 59public: 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. 164class MachNode : public Node { 165public: 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. 241 virtual MachNode *Expand( State *, Node_List &proj_list, Node* mem ) { return this; } 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. 311class MachIdealNode : public MachNode { 312public: 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. 323class MachTypeNode : public MachNode { 324 virtual uint size_of() const { return sizeof(*this); } // Size is bigger 325public: 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 336class MachBreakpointNode : public MachIdealNode { 337public: 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}; 347 348//------------------------------MachConstantBaseNode-------------------------- 349// Machine node that represents the base address of the constant table. 350class MachConstantBaseNode : public MachIdealNode { 351public: 352 static const RegMask& _out_RegMask; // We need the out_RegMask statically in MachConstantNode::in_RegMask(). 353 354public: 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. 377class MachConstantNode : public MachNode { 378protected: 379 Compile::Constant _constant; // This node's constant. 380 381public: 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}; 406 407//------------------------------MachUEPNode----------------------------------- 408// Machine Unvalidated Entry Point Node 409class MachUEPNode : public MachIdealNode { 410public: 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 423class MachPrologNode : public MachIdealNode { 424public: 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 438class MachEpilogNode : public MachIdealNode { 439public: 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 446private: 447 bool _do_polling; 448 449public: 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 463class MachNopNode : public MachIdealNode { 464private: 465 int _count; 466public: 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). 486class MachSpillCopyNode : public MachIdealNode { 487 const RegMask *_in; // RegMask for input 488 const RegMask *_out; // RegMask for output 489 const Type *_type; 490public: 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 523class MachNullCheckNode : public MachIdealNode { 524public: 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. 554class MachProjNode : public ProjNode { 555public: 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 578class MachIfNode : public MachNode { 579 virtual uint size_of() const { return sizeof(*this); } // Size is bigger 580public: 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 593class MachFastLockNode : public MachNode { 594 virtual uint size_of() const { return sizeof(*this); } // Size is bigger 595public: 596 BiasedLockingCounters* _counters; 597 598 MachFastLockNode() : MachNode() {} 599}; 600 601//------------------------------MachReturnNode-------------------------------- 602// Machine-specific versions of subroutine returns 603class MachReturnNode : public MachNode { 604 virtual uint size_of() const; // Size is bigger 605public: 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 623class MachSafePointNode : public MachReturnNode { 624public: 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 681class MachCallNode : public MachSafePointNode { 682protected: 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 686public: 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 722class MachCallJavaNode : public MachCallNode { 723protected: 724 virtual uint cmp( const Node &n ) const; 725 virtual uint size_of() const; // Size is bigger 726public: 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 730 bool _method_handle_invoke; // Tells if the call has to preserve SP 731 MachCallJavaNode() : MachCallNode() { 732 init_class_id(Class_MachCallJava); 733 } 734 735 virtual const RegMask &in_RegMask(uint) const; 736 737#ifndef PRODUCT 738 virtual void dump_spec(outputStream *st) const; 739#endif 740}; 741 742//------------------------------MachCallStaticJavaNode------------------------ 743// Machine-specific versions of monomorphic subroutine calls 744class MachCallStaticJavaNode : public MachCallJavaNode { 745 virtual uint cmp( const Node &n ) const; 746 virtual uint size_of() const; // Size is bigger 747public: 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 765class MachCallDynamicJavaNode : public MachCallJavaNode { 766public: 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 780class MachCallRuntimeNode : public MachCallNode { 781 virtual uint cmp( const Node &n ) const; 782 virtual uint size_of() const; // Size is bigger 783public: 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 794class MachCallLeafNode: public MachCallRuntimeNode { 795public: 796 MachCallLeafNode() : MachCallRuntimeNode() { 797 init_class_id(Class_MachCallLeaf); 798 } 799}; 800 801//------------------------------MachHaltNode----------------------------------- 802// Machine-specific versions of halt nodes 803class MachHaltNode : public MachReturnNode { 804public: 805 virtual JVMState* jvms() const; 806}; 807 808 809//------------------------------MachTempNode----------------------------------- 810// Node used by the adlc to construct inputs to represent temporary registers 811class MachTempNode : public MachNode { 812private: 813 MachOper *_opnd_array[1]; 814 815public: 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 839class labelOper : public MachOper { 840private: 841 virtual uint num_edges() const { return 0; } 842public: 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 873class methodOper : public MachOper { 874private: 875 virtual uint num_edges() const { return 0; } 876public: 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}; 896 897#endif // SHARE_VM_OPTO_MACHNODE_HPP 898