0N/A

0N/Adefine_array(ciObjectArray, ciObject*);

0N/Adefine_stack(ciObjectList, ciObjectArray);

0N/A

0N/A

0N/Aclass ciMethodBlocks;

0N/Aclass ciBlock;

0N/A

0N/Aclass BCEscapeAnalyzer : public ResourceObj {

0N/A private:

0N/A bool _conservative; // If true, return maximally

0N/A // conservative results.

0N/A ciMethod* _method;

0N/A ciMethodData* _methodData;

0N/A int _arg_size;

0N/A

0N/A intStack _stack;

0N/A

0N/A BitMap _arg_local;

0N/A BitMap _arg_stack;

0N/A BitMap _arg_returned;

0N/A BitMap _dirty;

45N/A enum{ ARG_OFFSET_MAX = 31};

45N/A uint *_arg_modified;

0N/A

0N/A bool _return_local;

78N/A bool _return_allocated;

0N/A bool _allocated_escapes;

45N/A bool _unknown_modified;

0N/A

0N/A ciObjectList _dependencies;

0N/A

0N/A ciMethodBlocks *_methodBlocks;

0N/A

0N/A BCEscapeAnalyzer* _parent;

0N/A int _level;

0N/A

1123N/A public:

0N/A class ArgumentMap;

0N/A class StateInfo;

0N/A

1123N/A private:

0N/A // helper functions

0N/A bool is_argument(int i) { return i >= 0 && i < _arg_size; }

0N/A

0N/A void raw_push(int i) { _stack.push(i); }

0N/A int raw_pop() { return _stack.is_empty() ? -1 : _stack.pop(); }

0N/A void apush(int i) { raw_push(i); }

0N/A void spush() { raw_push(-1); }

0N/A void lpush() { spush(); spush(); }

0N/A int apop() { return raw_pop(); }

0N/A void spop() { assert(_stack.is_empty() || _stack.top() == -1, ""); raw_pop(); }

0N/A void lpop() { spop(); spop(); }

0N/A

0N/A void set_returned(ArgumentMap vars);

0N/A bool is_argument(ArgumentMap vars);

0N/A bool is_arg_stack(ArgumentMap vars);

0N/A void clear_bits(ArgumentMap vars, BitMap &bs);

0N/A void set_method_escape(ArgumentMap vars);

0N/A void set_global_escape(ArgumentMap vars);

0N/A void set_dirty(ArgumentMap vars);

45N/A void set_modified(ArgumentMap vars, int offs, int size);

0N/A

0N/A bool is_recursive_call(ciMethod* callee);

0N/A void add_dependence(ciKlass *klass, ciMethod *meth);

0N/A void propagate_dependencies(ciMethod *meth);

0N/A void invoke(StateInfo &state, Bytecodes::Code code, ciMethod* target, ciKlass* holder);

0N/A

0N/A void iterate_one_block(ciBlock *blk, StateInfo &state, GrowableArray<ciBlock *> &successors);

0N/A void iterate_blocks(Arena *);

0N/A void merge_block_states(StateInfo *blockstates, ciBlock *dest, StateInfo *s_state);

0N/A

0N/A // analysis

0N/A void initialize();

0N/A void clear_escape_info();

0N/A void compute_escape_info();

0N/A vmIntrinsics::ID known_intrinsic();

0N/A bool compute_escape_for_intrinsic(vmIntrinsics::ID iid);

0N/A bool do_analysis();

0N/A

0N/A void read_escape_info();

0N/A

0N/A bool contains(uint arg_set1, uint arg_set2);

0N/A

0N/A public:

0N/A BCEscapeAnalyzer(ciMethod* method, BCEscapeAnalyzer* parent = NULL);

0N/A

0N/A // accessors

0N/A ciMethod* method() const { return _method; }

0N/A ciMethodData* methodData() const { return _methodData; }

0N/A BCEscapeAnalyzer* parent() const { return _parent; }

0N/A int level() const { return _level; }

0N/A ciObjectList* dependencies() { return &_dependencies; }

0N/A bool has_dependencies() const { return !_dependencies.is_empty(); }

0N/A

0N/A // retrieval of interprocedural escape information

0N/A

0N/A // The given argument does not escape the callee.

0N/A bool is_arg_local(int i) const {

0N/A return !_conservative && _arg_local.at(i);

0N/A }

0N/A

0N/A // The given argument escapes the callee, but does not become globally

0N/A // reachable.

0N/A bool is_arg_stack(int i) const {

0N/A return !_conservative && _arg_stack.at(i);

0N/A }

0N/A

0N/A // The given argument does not escape globally, and may be returned.

0N/A bool is_arg_returned(int i) const {

0N/A return !_conservative && _arg_returned.at(i); }

0N/A

0N/A // True iff only input arguments are returned.

0N/A bool is_return_local() const {

0N/A return !_conservative && _return_local;

0N/A }

0N/A

0N/A // True iff only newly allocated unescaped objects are returned.

0N/A bool is_return_allocated() const {

0N/A return !_conservative && _return_allocated && !_allocated_escapes;

0N/A }

0N/A

45N/A // Tracking of argument modification

45N/A

45N/A enum {OFFSET_ANY = -1};

45N/A bool is_arg_modified(int arg, int offset, int size_in_bytes);

45N/A void set_arg_modified(int arg, int offset, int size_in_bytes);

45N/A bool has_non_arg_side_affects() { return _unknown_modified; }

45N/A

0N/A // Copy dependencies from this analysis into "deps"

0N/A void copy_dependencies(Dependencies *deps);

78N/A

78N/A#ifndef PRODUCT

78N/A // dump escape information

78N/A void dump();

78N/A#endif

0N/A};