diff options
Diffstat (limited to 'src/share/vm/c1/c1_Instruction.hpp')
| -rw-r--r-- | src/share/vm/c1/c1_Instruction.hpp | 145 |
1 files changed, 133 insertions, 12 deletions
diff --git a/src/share/vm/c1/c1_Instruction.hpp b/src/share/vm/c1/c1_Instruction.hpp index 4fff026e0..b93525bf5 100644 --- a/src/share/vm/c1/c1_Instruction.hpp +++ b/src/share/vm/c1/c1_Instruction.hpp @@ -110,6 +110,8 @@ class ProfileCall; class ProfileInvoke; class RuntimeCall; class MemBar; +class RangeCheckPredicate; +class Assert; // A Value is a reference to the instruction creating the value typedef Instruction* Value; @@ -210,6 +212,10 @@ class InstructionVisitor: public StackObj { virtual void do_ProfileInvoke (ProfileInvoke* x) = 0; virtual void do_RuntimeCall (RuntimeCall* x) = 0; virtual void do_MemBar (MemBar* x) = 0; + virtual void do_RangeCheckPredicate(RangeCheckPredicate* x) = 0; +#ifdef ASSERT + virtual void do_Assert (Assert* x) = 0; +#endif }; @@ -306,8 +312,9 @@ class Instruction: public CompilationResourceObj { void update_exception_state(ValueStack* state); - //protected: - public: + protected: + BlockBegin* _block; // Block that contains this instruction + void set_type(ValueType* type) { assert(type != NULL, "type must exist"); _type = type; @@ -342,6 +349,9 @@ class Instruction: public CompilationResourceObj { ThrowIncompatibleClassChangeErrorFlag, ProfileMDOFlag, IsLinkedInBlockFlag, + NeedsRangeCheckFlag, + InWorkListFlag, + DeoptimizeOnException, InstructionLastFlag }; @@ -351,7 +361,7 @@ class Instruction: public CompilationResourceObj { // 'globally' used condition values enum Condition { - eql, neq, lss, leq, gtr, geq + eql, neq, lss, leq, gtr, geq, aeq, beq }; // Instructions may be pinned for many reasons and under certain conditions @@ -381,6 +391,7 @@ class Instruction: public CompilationResourceObj { , _pin_state(0) , _type(type) , _next(NULL) + , _block(NULL) , _subst(NULL) , _flags(0) , _operand(LIR_OprFact::illegalOpr) @@ -399,11 +410,13 @@ class Instruction: public CompilationResourceObj { int printable_bci() const { assert(has_printable_bci(), "_printable_bci should have been set"); return _printable_bci; } void set_printable_bci(int bci) { _printable_bci = bci; } #endif + int dominator_depth(); int use_count() const { return _use_count; } int pin_state() const { return _pin_state; } bool is_pinned() const { return _pin_state != 0 || PinAllInstructions; } ValueType* type() const { return _type; } - Instruction* prev(BlockBegin* block); // use carefully, expensive operation + BlockBegin *block() const { return _block; } + Instruction* prev(); // use carefully, expensive operation Instruction* next() const { return _next; } bool has_subst() const { return _subst != NULL; } Instruction* subst() { return _subst == NULL ? this : _subst->subst(); } @@ -432,6 +445,9 @@ class Instruction: public CompilationResourceObj { assert(as_BlockEnd() == NULL, "BlockEnd instructions must have no next"); assert(next->can_be_linked(), "shouldn't link these instructions into list"); + BlockBegin *block = this->block(); + next->_block = block; + next->set_flag(Instruction::IsLinkedInBlockFlag, true); _next = next; return next; @@ -444,6 +460,29 @@ class Instruction: public CompilationResourceObj { return set_next(next); } + // when blocks are merged + void fixup_block_pointers() { + Instruction *cur = next()->next(); // next()'s block is set in set_next + while (cur && cur->_block != block()) { + cur->_block = block(); + cur = cur->next(); + } + } + + Instruction *insert_after(Instruction *i) { + Instruction* n = _next; + set_next(i); + i->set_next(n); + return _next; + } + + Instruction *insert_after_same_bci(Instruction *i) { +#ifndef PRODUCT + i->set_printable_bci(printable_bci()); +#endif + return insert_after(i); + } + void set_subst(Instruction* subst) { assert(subst == NULL || type()->base() == subst->type()->base() || @@ -452,6 +491,7 @@ class Instruction: public CompilationResourceObj { } void set_exception_handlers(XHandlers *xhandlers) { _exception_handlers = xhandlers; } void set_exception_state(ValueStack* s) { check_state(s); _exception_state = s; } + void set_state_before(ValueStack* s) { check_state(s); _state_before = s; } // machine-specifics void set_operand(LIR_Opr operand) { assert(operand != LIR_OprFact::illegalOpr, "operand must exist"); _operand = operand; } @@ -509,6 +549,11 @@ class Instruction: public CompilationResourceObj { virtual ExceptionObject* as_ExceptionObject() { return NULL; } virtual UnsafeOp* as_UnsafeOp() { return NULL; } virtual ProfileInvoke* as_ProfileInvoke() { return NULL; } + virtual RangeCheckPredicate* as_RangeCheckPredicate() { return NULL; } + +#ifdef ASSERT + virtual Assert* as_Assert() { return NULL; } +#endif virtual void visit(InstructionVisitor* v) = 0; @@ -570,7 +615,6 @@ class AssertValues: public ValueVisitor { LEAF(Phi, Instruction) private: - BlockBegin* _block; // the block to which the phi function belongs int _pf_flags; // the flags of the phi function int _index; // to value on operand stack (index < 0) or to local public: @@ -578,9 +622,9 @@ LEAF(Phi, Instruction) Phi(ValueType* type, BlockBegin* b, int index) : Instruction(type->base()) , _pf_flags(0) - , _block(b) , _index(index) { + _block = b; NOT_PRODUCT(set_printable_bci(Value(b)->printable_bci())); if (type->is_illegal()) { make_illegal(); @@ -603,8 +647,6 @@ LEAF(Phi, Instruction) Value operand_at(int i) const; int operand_count() const; - BlockBegin* block() const { return _block; } - void set(Flag f) { _pf_flags |= f; } void clear(Flag f) { _pf_flags &= ~f; } bool is_set(Flag f) const { return (_pf_flags & f) != 0; } @@ -670,6 +712,7 @@ LEAF(Constant, Instruction) pin(); } + // generic virtual bool can_trap() const { return state_before() != NULL; } virtual void input_values_do(ValueVisitor* f) { /* no values */ } @@ -852,6 +895,7 @@ BASE(AccessIndexed, AccessArray) , _length(length) , _elt_type(elt_type) { + set_flag(Instruction::NeedsRangeCheckFlag, true); ASSERT_VALUES } @@ -860,6 +904,7 @@ BASE(AccessIndexed, AccessArray) Value length() const { return _length; } BasicType elt_type() const { return _elt_type; } + void clear_length() { _length = NULL; } // perform elimination of range checks involving constants bool compute_needs_range_check(); @@ -1524,6 +1569,7 @@ LEAF(BlockBegin, StateSplit) int _bci; // start-bci of block int _depth_first_number; // number of this block in a depth-first ordering int _linear_scan_number; // number of this block in linear-scan ordering + int _dominator_depth; int _loop_depth; // the loop nesting level of this block int _loop_index; // number of the innermost loop of this block int _flags; // the flags associated with this block @@ -1535,6 +1581,7 @@ LEAF(BlockBegin, StateSplit) // SSA specific fields: (factor out later) BlockList _successors; // the successors of this block BlockList _predecessors; // the predecessors of this block + BlockList _dominates; // list of blocks that are dominated by this block BlockBegin* _dominator; // the dominator of this block // SSA specific ends BlockEnd* _end; // the last instruction of this block @@ -1583,10 +1630,12 @@ LEAF(BlockBegin, StateSplit) , _linear_scan_number(-1) , _loop_depth(0) , _flags(0) + , _dominator_depth(-1) , _dominator(NULL) , _end(NULL) , _predecessors(2) , _successors(2) + , _dominates(2) , _exception_handlers(1) , _exception_states(NULL) , _exception_handler_pco(-1) @@ -1603,6 +1652,7 @@ LEAF(BlockBegin, StateSplit) , _total_preds(0) , _stores_to_locals() { + _block = this; #ifndef PRODUCT set_printable_bci(bci); #endif @@ -1612,8 +1662,10 @@ LEAF(BlockBegin, StateSplit) int block_id() const { return _block_id; } int bci() const { return _bci; } BlockList* successors() { return &_successors; } + BlockList* dominates() { return &_dominates; } BlockBegin* dominator() const { return _dominator; } int loop_depth() const { return _loop_depth; } + int dominator_depth() const { return _dominator_depth; } int depth_first_number() const { return _depth_first_number; } int linear_scan_number() const { return _linear_scan_number; } BlockEnd* end() const { return _end; } @@ -1634,6 +1686,7 @@ LEAF(BlockBegin, StateSplit) // manipulation void set_dominator(BlockBegin* dom) { _dominator = dom; } void set_loop_depth(int d) { _loop_depth = d; } + void set_dominator_depth(int d) { _dominator_depth = d; } void set_depth_first_number(int dfn) { _depth_first_number = dfn; } void set_linear_scan_number(int lsn) { _linear_scan_number = lsn; } void set_end(BlockEnd* end); @@ -1695,7 +1748,8 @@ LEAF(BlockBegin, StateSplit) parser_loop_header_flag = 1 << 7, // set by parser to identify blocks where phi functions can not be created on demand critical_edge_split_flag = 1 << 8, // set for all blocks that are introduced when critical edges are split linear_scan_loop_header_flag = 1 << 9, // set during loop-detection for LinearScan - linear_scan_loop_end_flag = 1 << 10 // set during loop-detection for LinearScan + linear_scan_loop_end_flag = 1 << 10, // set during loop-detection for LinearScan + donot_eliminate_range_checks = 1 << 11 // Should be try to eliminate range checks in this block }; void set(Flag f) { _flags |= f; } @@ -1728,7 +1782,6 @@ LEAF(BlockBegin, StateSplit) BASE(BlockEnd, StateSplit) private: - BlockBegin* _begin; BlockList* _sux; protected: @@ -1746,7 +1799,6 @@ BASE(BlockEnd, StateSplit) // creation BlockEnd(ValueType* type, ValueStack* state_before, bool is_safepoint) : StateSplit(type, state_before) - , _begin(NULL) , _sux(NULL) { set_flag(IsSafepointFlag, is_safepoint); @@ -1754,7 +1806,8 @@ BASE(BlockEnd, StateSplit) // accessors bool is_safepoint() const { return check_flag(IsSafepointFlag); } - BlockBegin* begin() const { return _begin; } + // For compatibility with old code, for new code use block() + BlockBegin* begin() const { return _block; } // manipulation void set_begin(BlockBegin* begin); @@ -1811,6 +1864,74 @@ LEAF(Goto, BlockEnd) void set_direction(Direction d) { _direction = d; } }; +#ifdef ASSERT +LEAF(Assert, Instruction) + private: + Value _x; + Condition _cond; + Value _y; + char *_message; + + public: + // creation + // unordered_is_true is valid for float/double compares only + Assert(Value x, Condition cond, bool unordered_is_true, Value y); + + // accessors + Value x() const { return _x; } + Condition cond() const { return _cond; } + bool unordered_is_true() const { return check_flag(UnorderedIsTrueFlag); } + Value y() const { return _y; } + const char *message() const { return _message; } + + // generic + virtual void input_values_do(ValueVisitor* f) { f->visit(&_x); f->visit(&_y); } +}; +#endif + +LEAF(RangeCheckPredicate, StateSplit) + private: + Value _x; + Condition _cond; + Value _y; + + void check_state(); + + public: + // creation + // unordered_is_true is valid for float/double compares only + RangeCheckPredicate(Value x, Condition cond, bool unordered_is_true, Value y, ValueStack* state) : StateSplit(illegalType) + , _x(x) + , _cond(cond) + , _y(y) + { + ASSERT_VALUES + set_flag(UnorderedIsTrueFlag, unordered_is_true); + assert(x->type()->tag() == y->type()->tag(), "types must match"); + this->set_state(state); + check_state(); + } + + // Always deoptimize + RangeCheckPredicate(ValueStack* state) : StateSplit(illegalType) + { + this->set_state(state); + _x = _y = NULL; + check_state(); + } + + // accessors + Value x() const { return _x; } + Condition cond() const { return _cond; } + bool unordered_is_true() const { return check_flag(UnorderedIsTrueFlag); } + Value y() const { return _y; } + + void always_fail() { _x = _y = NULL; } + + // generic + virtual void input_values_do(ValueVisitor* f) { StateSplit::input_values_do(f); f->visit(&_x); f->visit(&_y); } + HASHING3(RangeCheckPredicate, true, x()->subst(), y()->subst(), cond()) +}; LEAF(If, BlockEnd) private: |