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comparison src/share/vm/opto/callnode.hpp @ 20327:411e30e5fbb8

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8026796: Make replace_in_map() on parent maps generic Summary: propagate node replacements along control flow edges to callers Reviewed-by: kvn, vlivanov
author roland
date Wed, 13 Aug 2014 11:00:22 +0200
parents 0bf37f737702
children 7848fc12602b
comparison
equal deleted inserted replaced
20326:da00a41842a5 20327:411e30e5fbb8
28 #include "opto/connode.hpp" 28 #include "opto/connode.hpp"
29 #include "opto/mulnode.hpp" 29 #include "opto/mulnode.hpp"
30 #include "opto/multnode.hpp" 30 #include "opto/multnode.hpp"
31 #include "opto/opcodes.hpp" 31 #include "opto/opcodes.hpp"
32 #include "opto/phaseX.hpp" 32 #include "opto/phaseX.hpp"
33 #include "opto/replacednodes.hpp"
33 #include "opto/type.hpp" 34 #include "opto/type.hpp"
34 35
35 // Portions of code courtesy of Clifford Click 36 // Portions of code courtesy of Clifford Click
36 37
37 // Optimization - Graph Style 38 // Optimization - Graph Style
333 } 334 }
334 335
335 OopMap* _oop_map; // Array of OopMap info (8-bit char) for GC 336 OopMap* _oop_map; // Array of OopMap info (8-bit char) for GC
336 JVMState* const _jvms; // Pointer to list of JVM State objects 337 JVMState* const _jvms; // Pointer to list of JVM State objects
337 const TypePtr* _adr_type; // What type of memory does this node produce? 338 const TypePtr* _adr_type; // What type of memory does this node produce?
339 ReplacedNodes _replaced_nodes; // During parsing: list of pair of nodes from calls to GraphKit::replace_in_map()
338 340
339 // Many calls take *all* of memory as input, 341 // Many calls take *all* of memory as input,
340 // but some produce a limited subset of that memory as output. 342 // but some produce a limited subset of that memory as output.
341 // The adr_type reports the call's behavior as a store, not a load. 343 // The adr_type reports the call's behavior as a store, not a load.
342 344
423 // This feature is used only for safepoints which serve as "maps" 425 // This feature is used only for safepoints which serve as "maps"
424 // for JVM states during parsing, intrinsic expansion, etc. 426 // for JVM states during parsing, intrinsic expansion, etc.
425 SafePointNode* next_exception() const; 427 SafePointNode* next_exception() const;
426 void set_next_exception(SafePointNode* n); 428 void set_next_exception(SafePointNode* n);
427 bool has_exceptions() const { return next_exception() != NULL; } 429 bool has_exceptions() const { return next_exception() != NULL; }
430
431 // Helper methods to operate on replaced nodes
432 ReplacedNodes replaced_nodes() const {
433 return _replaced_nodes;
434 }
435
436 void set_replaced_nodes(ReplacedNodes replaced_nodes) {
437 _replaced_nodes = replaced_nodes;
438 }
439
440 void clone_replaced_nodes() {
441 _replaced_nodes.clone();
442 }
443 void record_replaced_node(Node* initial, Node* improved) {
444 _replaced_nodes.record(initial, improved);
445 }
446 void transfer_replaced_nodes_from(SafePointNode* sfpt, uint idx = 0) {
447 _replaced_nodes.transfer_from(sfpt->_replaced_nodes, idx);
448 }
449 void delete_replaced_nodes() {
450 _replaced_nodes.reset();
451 }
452 void apply_replaced_nodes() {
453 _replaced_nodes.apply(this);
454 }
455 void merge_replaced_nodes_with(SafePointNode* sfpt) {
456 _replaced_nodes.merge_with(sfpt->_replaced_nodes);
457 }
458 bool has_replaced_nodes() const {
459 return !_replaced_nodes.is_empty();
460 }
428 461
429 // Standard Node stuff 462 // Standard Node stuff
430 virtual int Opcode() const; 463 virtual int Opcode() const;
431 virtual bool pinned() const { return true; } 464 virtual bool pinned() const { return true; }
432 virtual const Type *Value( PhaseTransform *phase ) const; 465 virtual const Type *Value( PhaseTransform *phase ) const;