| /* |
| * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| // FORMS.CPP - Definitions for ADL Parser Forms Classes |
| #include "adlc.hpp" |
| |
| //==============================Instructions=================================== |
| //------------------------------InstructForm----------------------------------- |
| InstructForm::InstructForm(const char *id, bool ideal_only) |
| : _ident(id), _ideal_only(ideal_only), |
| _localNames(cmpstr, hashstr, Form::arena), |
| _effects(cmpstr, hashstr, Form::arena), |
| _is_mach_constant(false), |
| _needs_constant_base(false), |
| _has_call(false) |
| { |
| _ftype = Form::INS; |
| |
| _matrule = NULL; |
| _insencode = NULL; |
| _constant = NULL; |
| _is_postalloc_expand = false; |
| _opcode = NULL; |
| _size = NULL; |
| _attribs = NULL; |
| _predicate = NULL; |
| _exprule = NULL; |
| _rewrule = NULL; |
| _format = NULL; |
| _peephole = NULL; |
| _ins_pipe = NULL; |
| _uniq_idx = NULL; |
| _num_uniq = 0; |
| _cisc_spill_operand = Not_cisc_spillable;// Which operand may cisc-spill |
| _cisc_spill_alternate = NULL; // possible cisc replacement |
| _cisc_reg_mask_name = NULL; |
| _is_cisc_alternate = false; |
| _is_short_branch = false; |
| _short_branch_form = NULL; |
| _alignment = 1; |
| } |
| |
| InstructForm::InstructForm(const char *id, InstructForm *instr, MatchRule *rule) |
| : _ident(id), _ideal_only(false), |
| _localNames(instr->_localNames), |
| _effects(instr->_effects), |
| _is_mach_constant(false), |
| _needs_constant_base(false), |
| _has_call(false) |
| { |
| _ftype = Form::INS; |
| |
| _matrule = rule; |
| _insencode = instr->_insencode; |
| _constant = instr->_constant; |
| _is_postalloc_expand = instr->_is_postalloc_expand; |
| _opcode = instr->_opcode; |
| _size = instr->_size; |
| _attribs = instr->_attribs; |
| _predicate = instr->_predicate; |
| _exprule = instr->_exprule; |
| _rewrule = instr->_rewrule; |
| _format = instr->_format; |
| _peephole = instr->_peephole; |
| _ins_pipe = instr->_ins_pipe; |
| _uniq_idx = instr->_uniq_idx; |
| _num_uniq = instr->_num_uniq; |
| _cisc_spill_operand = Not_cisc_spillable; // Which operand may cisc-spill |
| _cisc_spill_alternate = NULL; // possible cisc replacement |
| _cisc_reg_mask_name = NULL; |
| _is_cisc_alternate = false; |
| _is_short_branch = false; |
| _short_branch_form = NULL; |
| _alignment = 1; |
| // Copy parameters |
| const char *name; |
| instr->_parameters.reset(); |
| for (; (name = instr->_parameters.iter()) != NULL;) |
| _parameters.addName(name); |
| } |
| |
| InstructForm::~InstructForm() { |
| } |
| |
| InstructForm *InstructForm::is_instruction() const { |
| return (InstructForm*)this; |
| } |
| |
| bool InstructForm::ideal_only() const { |
| return _ideal_only; |
| } |
| |
| bool InstructForm::sets_result() const { |
| return (_matrule != NULL && _matrule->sets_result()); |
| } |
| |
| bool InstructForm::needs_projections() { |
| _components.reset(); |
| for( Component *comp; (comp = _components.iter()) != NULL; ) { |
| if (comp->isa(Component::KILL)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| |
| bool InstructForm::has_temps() { |
| if (_matrule) { |
| // Examine each component to see if it is a TEMP |
| _components.reset(); |
| // Skip the first component, if already handled as (SET dst (...)) |
| Component *comp = NULL; |
| if (sets_result()) comp = _components.iter(); |
| while ((comp = _components.iter()) != NULL) { |
| if (comp->isa(Component::TEMP)) { |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| uint InstructForm::num_defs_or_kills() { |
| uint defs_or_kills = 0; |
| |
| _components.reset(); |
| for( Component *comp; (comp = _components.iter()) != NULL; ) { |
| if( comp->isa(Component::DEF) || comp->isa(Component::KILL) ) { |
| ++defs_or_kills; |
| } |
| } |
| |
| return defs_or_kills; |
| } |
| |
| // This instruction has an expand rule? |
| bool InstructForm::expands() const { |
| return ( _exprule != NULL ); |
| } |
| |
| // This instruction has a late expand rule? |
| bool InstructForm::postalloc_expands() const { |
| return _is_postalloc_expand; |
| } |
| |
| // This instruction has a peephole rule? |
| Peephole *InstructForm::peepholes() const { |
| return _peephole; |
| } |
| |
| // This instruction has a peephole rule? |
| void InstructForm::append_peephole(Peephole *peephole) { |
| if( _peephole == NULL ) { |
| _peephole = peephole; |
| } else { |
| _peephole->append_peephole(peephole); |
| } |
| } |
| |
| |
| // ideal opcode enumeration |
| const char *InstructForm::ideal_Opcode( FormDict &globalNames ) const { |
| if( !_matrule ) return "Node"; // Something weird |
| // Chain rules do not really have ideal Opcodes; use their source |
| // operand ideal Opcode instead. |
| if( is_simple_chain_rule(globalNames) ) { |
| const char *src = _matrule->_rChild->_opType; |
| OperandForm *src_op = globalNames[src]->is_operand(); |
| assert( src_op, "Not operand class of chain rule" ); |
| if( !src_op->_matrule ) return "Node"; |
| return src_op->_matrule->_opType; |
| } |
| // Operand chain rules do not really have ideal Opcodes |
| if( _matrule->is_chain_rule(globalNames) ) |
| return "Node"; |
| return strcmp(_matrule->_opType,"Set") |
| ? _matrule->_opType |
| : _matrule->_rChild->_opType; |
| } |
| |
| // Recursive check on all operands' match rules in my match rule |
| bool InstructForm::is_pinned(FormDict &globals) { |
| if ( ! _matrule) return false; |
| |
| int index = 0; |
| if (_matrule->find_type("Goto", index)) return true; |
| if (_matrule->find_type("If", index)) return true; |
| if (_matrule->find_type("CountedLoopEnd",index)) return true; |
| if (_matrule->find_type("Return", index)) return true; |
| if (_matrule->find_type("Rethrow", index)) return true; |
| if (_matrule->find_type("TailCall", index)) return true; |
| if (_matrule->find_type("TailJump", index)) return true; |
| if (_matrule->find_type("Halt", index)) return true; |
| if (_matrule->find_type("Jump", index)) return true; |
| |
| return is_parm(globals); |
| } |
| |
| // Recursive check on all operands' match rules in my match rule |
| bool InstructForm::is_projection(FormDict &globals) { |
| if ( ! _matrule) return false; |
| |
| int index = 0; |
| if (_matrule->find_type("Goto", index)) return true; |
| if (_matrule->find_type("Return", index)) return true; |
| if (_matrule->find_type("Rethrow", index)) return true; |
| if (_matrule->find_type("TailCall",index)) return true; |
| if (_matrule->find_type("TailJump",index)) return true; |
| if (_matrule->find_type("Halt", index)) return true; |
| |
| return false; |
| } |
| |
| // Recursive check on all operands' match rules in my match rule |
| bool InstructForm::is_parm(FormDict &globals) { |
| if ( ! _matrule) return false; |
| |
| int index = 0; |
| if (_matrule->find_type("Parm",index)) return true; |
| |
| return false; |
| } |
| |
| bool InstructForm::is_ideal_negD() const { |
| return (_matrule && _matrule->_rChild && strcmp(_matrule->_rChild->_opType, "NegD") == 0); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'Copy*' node |
| int InstructForm::is_ideal_copy() const { |
| return _matrule ? _matrule->is_ideal_copy() : 0; |
| } |
| |
| // Return 'true' if this instruction is too complex to rematerialize. |
| int InstructForm::is_expensive() const { |
| // We can prove it is cheap if it has an empty encoding. |
| // This helps with platform-specific nops like ThreadLocal and RoundFloat. |
| if (is_empty_encoding()) |
| return 0; |
| |
| if (is_tls_instruction()) |
| return 1; |
| |
| if (_matrule == NULL) return 0; |
| |
| return _matrule->is_expensive(); |
| } |
| |
| // Has an empty encoding if _size is a constant zero or there |
| // are no ins_encode tokens. |
| int InstructForm::is_empty_encoding() const { |
| if (_insencode != NULL) { |
| _insencode->reset(); |
| if (_insencode->encode_class_iter() == NULL) { |
| return 1; |
| } |
| } |
| if (_size != NULL && strcmp(_size, "0") == 0) { |
| return 1; |
| } |
| return 0; |
| } |
| |
| int InstructForm::is_tls_instruction() const { |
| if (_ident != NULL && |
| ( ! strcmp( _ident,"tlsLoadP") || |
| ! strncmp(_ident,"tlsLoadP_",9)) ) { |
| return 1; |
| } |
| |
| if (_matrule != NULL && _insencode != NULL) { |
| const char* opType = _matrule->_opType; |
| if (strcmp(opType, "Set")==0) |
| opType = _matrule->_rChild->_opType; |
| if (strcmp(opType,"ThreadLocal")==0) { |
| fprintf(stderr, "Warning: ThreadLocal instruction %s should be named 'tlsLoadP_*'\n", |
| (_ident == NULL ? "NULL" : _ident)); |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| // Return 'true' if this instruction matches an ideal 'If' node |
| bool InstructForm::is_ideal_if() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->is_ideal_if(); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'FastLock' node |
| bool InstructForm::is_ideal_fastlock() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->is_ideal_fastlock(); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'MemBarXXX' node |
| bool InstructForm::is_ideal_membar() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->is_ideal_membar(); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'LoadPC' node |
| bool InstructForm::is_ideal_loadPC() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->is_ideal_loadPC(); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'Box' node |
| bool InstructForm::is_ideal_box() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->is_ideal_box(); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'Goto' node |
| bool InstructForm::is_ideal_goto() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->is_ideal_goto(); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'Jump' node |
| bool InstructForm::is_ideal_jump() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->is_ideal_jump(); |
| } |
| |
| // Return 'true' if instruction matches ideal 'If' | 'Goto' | 'CountedLoopEnd' |
| bool InstructForm::is_ideal_branch() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->is_ideal_if() || _matrule->is_ideal_goto(); |
| } |
| |
| |
| // Return 'true' if this instruction matches an ideal 'Return' node |
| bool InstructForm::is_ideal_return() const { |
| if( _matrule == NULL ) return false; |
| |
| // Check MatchRule to see if the first entry is the ideal "Return" node |
| int index = 0; |
| if (_matrule->find_type("Return",index)) return true; |
| if (_matrule->find_type("Rethrow",index)) return true; |
| if (_matrule->find_type("TailCall",index)) return true; |
| if (_matrule->find_type("TailJump",index)) return true; |
| |
| return false; |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'Halt' node |
| bool InstructForm::is_ideal_halt() const { |
| int index = 0; |
| return _matrule && _matrule->find_type("Halt",index); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'SafePoint' node |
| bool InstructForm::is_ideal_safepoint() const { |
| int index = 0; |
| return _matrule && _matrule->find_type("SafePoint",index); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'Nop' node |
| bool InstructForm::is_ideal_nop() const { |
| return _ident && _ident[0] == 'N' && _ident[1] == 'o' && _ident[2] == 'p' && _ident[3] == '_'; |
| } |
| |
| bool InstructForm::is_ideal_control() const { |
| if ( ! _matrule) return false; |
| |
| return is_ideal_return() || is_ideal_branch() || _matrule->is_ideal_jump() || is_ideal_halt(); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'Call' node |
| Form::CallType InstructForm::is_ideal_call() const { |
| if( _matrule == NULL ) return Form::invalid_type; |
| |
| // Check MatchRule to see if the first entry is the ideal "Call" node |
| int idx = 0; |
| if(_matrule->find_type("CallStaticJava",idx)) return Form::JAVA_STATIC; |
| idx = 0; |
| if(_matrule->find_type("Lock",idx)) return Form::JAVA_STATIC; |
| idx = 0; |
| if(_matrule->find_type("Unlock",idx)) return Form::JAVA_STATIC; |
| idx = 0; |
| if(_matrule->find_type("CallDynamicJava",idx)) return Form::JAVA_DYNAMIC; |
| idx = 0; |
| if(_matrule->find_type("CallRuntime",idx)) return Form::JAVA_RUNTIME; |
| idx = 0; |
| if(_matrule->find_type("CallLeaf",idx)) return Form::JAVA_LEAF; |
| idx = 0; |
| if(_matrule->find_type("CallLeafNoFP",idx)) return Form::JAVA_LEAF; |
| idx = 0; |
| |
| return Form::invalid_type; |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'Load?' node |
| Form::DataType InstructForm::is_ideal_load() const { |
| if( _matrule == NULL ) return Form::none; |
| |
| return _matrule->is_ideal_load(); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'LoadKlass' node |
| bool InstructForm::skip_antidep_check() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->skip_antidep_check(); |
| } |
| |
| // Return 'true' if this instruction matches an ideal 'Load?' node |
| Form::DataType InstructForm::is_ideal_store() const { |
| if( _matrule == NULL ) return Form::none; |
| |
| return _matrule->is_ideal_store(); |
| } |
| |
| // Return 'true' if this instruction matches an ideal vector node |
| bool InstructForm::is_vector() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->is_vector(); |
| } |
| |
| |
| // Return the input register that must match the output register |
| // If this is not required, return 0 |
| uint InstructForm::two_address(FormDict &globals) { |
| uint matching_input = 0; |
| if(_components.count() == 0) return 0; |
| |
| _components.reset(); |
| Component *comp = _components.iter(); |
| // Check if there is a DEF |
| if( comp->isa(Component::DEF) ) { |
| // Check that this is a register |
| const char *def_type = comp->_type; |
| const Form *form = globals[def_type]; |
| OperandForm *op = form->is_operand(); |
| if( op ) { |
| if( op->constrained_reg_class() != NULL && |
| op->interface_type(globals) == Form::register_interface ) { |
| // Remember the local name for equality test later |
| const char *def_name = comp->_name; |
| // Check if a component has the same name and is a USE |
| do { |
| if( comp->isa(Component::USE) && strcmp(comp->_name,def_name)==0 ) { |
| return operand_position_format(def_name); |
| } |
| } while( (comp = _components.iter()) != NULL); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| // when chaining a constant to an instruction, returns 'true' and sets opType |
| Form::DataType InstructForm::is_chain_of_constant(FormDict &globals) { |
| const char *dummy = NULL; |
| const char *dummy2 = NULL; |
| return is_chain_of_constant(globals, dummy, dummy2); |
| } |
| Form::DataType InstructForm::is_chain_of_constant(FormDict &globals, |
| const char * &opTypeParam) { |
| const char *result = NULL; |
| |
| return is_chain_of_constant(globals, opTypeParam, result); |
| } |
| |
| Form::DataType InstructForm::is_chain_of_constant(FormDict &globals, |
| const char * &opTypeParam, const char * &resultParam) { |
| Form::DataType data_type = Form::none; |
| if ( ! _matrule) return data_type; |
| |
| // !!!!! |
| // The source of the chain rule is 'position = 1' |
| uint position = 1; |
| const char *result = NULL; |
| const char *name = NULL; |
| const char *opType = NULL; |
| // Here base_operand is looking for an ideal type to be returned (opType). |
| if ( _matrule->is_chain_rule(globals) |
| && _matrule->base_operand(position, globals, result, name, opType) ) { |
| data_type = ideal_to_const_type(opType); |
| |
| // if it isn't an ideal constant type, just return |
| if ( data_type == Form::none ) return data_type; |
| |
| // Ideal constant types also adjust the opType parameter. |
| resultParam = result; |
| opTypeParam = opType; |
| return data_type; |
| } |
| |
| return data_type; |
| } |
| |
| // Check if a simple chain rule |
| bool InstructForm::is_simple_chain_rule(FormDict &globals) const { |
| if( _matrule && _matrule->sets_result() |
| && _matrule->_rChild->_lChild == NULL |
| && globals[_matrule->_rChild->_opType] |
| && globals[_matrule->_rChild->_opType]->is_opclass() ) { |
| return true; |
| } |
| return false; |
| } |
| |
| // check for structural rematerialization |
| bool InstructForm::rematerialize(FormDict &globals, RegisterForm *registers ) { |
| bool rematerialize = false; |
| |
| Form::DataType data_type = is_chain_of_constant(globals); |
| if( data_type != Form::none ) |
| rematerialize = true; |
| |
| // Constants |
| if( _components.count() == 1 && _components[0]->is(Component::USE_DEF) ) |
| rematerialize = true; |
| |
| // Pseudo-constants (values easily available to the runtime) |
| if (is_empty_encoding() && is_tls_instruction()) |
| rematerialize = true; |
| |
| // 1-input, 1-output, such as copies or increments. |
| if( _components.count() == 2 && |
| _components[0]->is(Component::DEF) && |
| _components[1]->isa(Component::USE) ) |
| rematerialize = true; |
| |
| // Check for an ideal 'Load?' and eliminate rematerialize option |
| if ( is_ideal_load() != Form::none || // Ideal load? Do not rematerialize |
| is_ideal_copy() != Form::none || // Ideal copy? Do not rematerialize |
| is_expensive() != Form::none) { // Expensive? Do not rematerialize |
| rematerialize = false; |
| } |
| |
| // Always rematerialize the flags. They are more expensive to save & |
| // restore than to recompute (and possibly spill the compare's inputs). |
| if( _components.count() >= 1 ) { |
| Component *c = _components[0]; |
| const Form *form = globals[c->_type]; |
| OperandForm *opform = form->is_operand(); |
| if( opform ) { |
| // Avoid the special stack_slots register classes |
| const char *rc_name = opform->constrained_reg_class(); |
| if( rc_name ) { |
| if( strcmp(rc_name,"stack_slots") ) { |
| // Check for ideal_type of RegFlags |
| const char *type = opform->ideal_type( globals, registers ); |
| if( (type != NULL) && !strcmp(type, "RegFlags") ) |
| rematerialize = true; |
| } else |
| rematerialize = false; // Do not rematerialize things target stk |
| } |
| } |
| } |
| |
| return rematerialize; |
| } |
| |
| // loads from memory, so must check for anti-dependence |
| bool InstructForm::needs_anti_dependence_check(FormDict &globals) const { |
| if ( skip_antidep_check() ) return false; |
| |
| // Machine independent loads must be checked for anti-dependences |
| if( is_ideal_load() != Form::none ) return true; |
| |
| // !!!!! !!!!! !!!!! |
| // TEMPORARY |
| // if( is_simple_chain_rule(globals) ) return false; |
| |
| // String.(compareTo/equals/indexOf) and Arrays.equals use many memorys edges, |
| // but writes none |
| if( _matrule && _matrule->_rChild && |
| ( strcmp(_matrule->_rChild->_opType,"StrComp" )==0 || |
| strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 || |
| strcmp(_matrule->_rChild->_opType,"StrIndexOf" )==0 || |
| strcmp(_matrule->_rChild->_opType,"StrIndexOfChar" )==0 || |
| strcmp(_matrule->_rChild->_opType,"HasNegatives" )==0 || |
| strcmp(_matrule->_rChild->_opType,"AryEq" )==0 )) |
| return true; |
| |
| // Check if instruction has a USE of a memory operand class, but no defs |
| bool USE_of_memory = false; |
| bool DEF_of_memory = false; |
| Component *comp = NULL; |
| ComponentList &components = (ComponentList &)_components; |
| |
| components.reset(); |
| while( (comp = components.iter()) != NULL ) { |
| const Form *form = globals[comp->_type]; |
| if( !form ) continue; |
| OpClassForm *op = form->is_opclass(); |
| if( !op ) continue; |
| if( form->interface_type(globals) == Form::memory_interface ) { |
| if( comp->isa(Component::USE) ) USE_of_memory = true; |
| if( comp->isa(Component::DEF) ) { |
| OperandForm *oper = form->is_operand(); |
| if( oper && oper->is_user_name_for_sReg() ) { |
| // Stack slots are unaliased memory handled by allocator |
| oper = oper; // debug stopping point !!!!! |
| } else { |
| DEF_of_memory = true; |
| } |
| } |
| } |
| } |
| return (USE_of_memory && !DEF_of_memory); |
| } |
| |
| |
| bool InstructForm::is_wide_memory_kill(FormDict &globals) const { |
| if( _matrule == NULL ) return false; |
| if( !_matrule->_opType ) return false; |
| |
| if( strcmp(_matrule->_opType,"MemBarRelease") == 0 ) return true; |
| if( strcmp(_matrule->_opType,"MemBarAcquire") == 0 ) return true; |
| if( strcmp(_matrule->_opType,"MemBarReleaseLock") == 0 ) return true; |
| if( strcmp(_matrule->_opType,"MemBarAcquireLock") == 0 ) return true; |
| if( strcmp(_matrule->_opType,"MemBarStoreStore") == 0 ) return true; |
| if( strcmp(_matrule->_opType,"MemBarVolatile") == 0 ) return true; |
| if( strcmp(_matrule->_opType,"StoreFence") == 0 ) return true; |
| if( strcmp(_matrule->_opType,"LoadFence") == 0 ) return true; |
| |
| return false; |
| } |
| |
| int InstructForm::memory_operand(FormDict &globals) const { |
| // Machine independent loads must be checked for anti-dependences |
| // Check if instruction has a USE of a memory operand class, or a def. |
| int USE_of_memory = 0; |
| int DEF_of_memory = 0; |
| const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts |
| const char* last_memory_USE = NULL; |
| Component *unique = NULL; |
| Component *comp = NULL; |
| ComponentList &components = (ComponentList &)_components; |
| |
| components.reset(); |
| while( (comp = components.iter()) != NULL ) { |
| const Form *form = globals[comp->_type]; |
| if( !form ) continue; |
| OpClassForm *op = form->is_opclass(); |
| if( !op ) continue; |
| if( op->stack_slots_only(globals) ) continue; |
| if( form->interface_type(globals) == Form::memory_interface ) { |
| if( comp->isa(Component::DEF) ) { |
| last_memory_DEF = comp->_name; |
| DEF_of_memory++; |
| unique = comp; |
| } else if( comp->isa(Component::USE) ) { |
| if( last_memory_DEF != NULL ) { |
| assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name"); |
| last_memory_DEF = NULL; |
| } |
| // Handles same memory being used multiple times in the case of BMI1 instructions. |
| if (last_memory_USE != NULL) { |
| if (strcmp(comp->_name, last_memory_USE) != 0) { |
| USE_of_memory++; |
| } |
| } else { |
| USE_of_memory++; |
| } |
| last_memory_USE = comp->_name; |
| |
| if (DEF_of_memory == 0) // defs take precedence |
| unique = comp; |
| } else { |
| assert(last_memory_DEF == NULL, "unpaired memory DEF"); |
| } |
| } |
| } |
| assert(last_memory_DEF == NULL, "unpaired memory DEF"); |
| assert(USE_of_memory >= DEF_of_memory, "unpaired memory DEF"); |
| USE_of_memory -= DEF_of_memory; // treat paired DEF/USE as one occurrence |
| if( (USE_of_memory + DEF_of_memory) > 0 ) { |
| if( is_simple_chain_rule(globals) ) { |
| //fprintf(stderr, "Warning: chain rule is not really a memory user.\n"); |
| //((InstructForm*)this)->dump(); |
| // Preceding code prints nothing on sparc and these insns on intel: |
| // leaP8 leaP32 leaPIdxOff leaPIdxScale leaPIdxScaleOff leaP8 leaP32 |
| // leaPIdxOff leaPIdxScale leaPIdxScaleOff |
| return NO_MEMORY_OPERAND; |
| } |
| |
| if( DEF_of_memory == 1 ) { |
| assert(unique != NULL, ""); |
| if( USE_of_memory == 0 ) { |
| // unique def, no uses |
| } else { |
| // // unique def, some uses |
| // // must return bottom unless all uses match def |
| // unique = NULL; |
| #ifdef S390 |
| // This case is important for move instructions on s390x. |
| // On other platforms (e.g. x86), all uses always match the def. |
| unique = NULL; |
| #endif |
| } |
| } else if( DEF_of_memory > 0 ) { |
| // multiple defs, don't care about uses |
| unique = NULL; |
| } else if( USE_of_memory == 1) { |
| // unique use, no defs |
| assert(unique != NULL, ""); |
| } else if( USE_of_memory > 0 ) { |
| // multiple uses, no defs |
| unique = NULL; |
| } else { |
| assert(false, "bad case analysis"); |
| } |
| // process the unique DEF or USE, if there is one |
| if( unique == NULL ) { |
| return MANY_MEMORY_OPERANDS; |
| } else { |
| int pos = components.operand_position(unique->_name); |
| if( unique->isa(Component::DEF) ) { |
| pos += 1; // get corresponding USE from DEF |
| } |
| assert(pos >= 1, "I was just looking at it!"); |
| return pos; |
| } |
| } |
| |
| // missed the memory op?? |
| if( true ) { // %%% should not be necessary |
| if( is_ideal_store() != Form::none ) { |
| fprintf(stderr, "Warning: cannot find memory opnd in instr.\n"); |
| ((InstructForm*)this)->dump(); |
| // pretend it has multiple defs and uses |
| return MANY_MEMORY_OPERANDS; |
| } |
| if( is_ideal_load() != Form::none ) { |
| fprintf(stderr, "Warning: cannot find memory opnd in instr.\n"); |
| ((InstructForm*)this)->dump(); |
| // pretend it has multiple uses and no defs |
| return MANY_MEMORY_OPERANDS; |
| } |
| } |
| |
| return NO_MEMORY_OPERAND; |
| } |
| |
| |
| // This instruction captures the machine-independent bottom_type |
| // Expected use is for pointer vs oop determination for LoadP |
| bool InstructForm::captures_bottom_type(FormDict &globals) const { |
| if (_matrule && _matrule->_rChild && |
| (!strcmp(_matrule->_rChild->_opType,"CastPP") || // new result type |
| !strcmp(_matrule->_rChild->_opType,"CastX2P") || // new result type |
| !strcmp(_matrule->_rChild->_opType,"DecodeN") || |
| !strcmp(_matrule->_rChild->_opType,"EncodeP") || |
| !strcmp(_matrule->_rChild->_opType,"DecodeNKlass") || |
| !strcmp(_matrule->_rChild->_opType,"EncodePKlass") || |
| !strcmp(_matrule->_rChild->_opType,"LoadN") || |
| !strcmp(_matrule->_rChild->_opType,"LoadNKlass") || |
| !strcmp(_matrule->_rChild->_opType,"CreateEx") || // type of exception |
| !strcmp(_matrule->_rChild->_opType,"CheckCastPP") || |
| !strcmp(_matrule->_rChild->_opType,"GetAndSetP") || |
| !strcmp(_matrule->_rChild->_opType,"GetAndSetN") || |
| !strcmp(_matrule->_rChild->_opType,"CompareAndExchangeP") || |
| !strcmp(_matrule->_rChild->_opType,"CompareAndExchangeN"))) return true; |
| else if ( is_ideal_load() == Form::idealP ) return true; |
| else if ( is_ideal_store() != Form::none ) return true; |
| |
| if (needs_base_oop_edge(globals)) return true; |
| |
| if (is_vector()) return true; |
| if (is_mach_constant()) return true; |
| |
| return false; |
| } |
| |
| |
| // Access instr_cost attribute or return NULL. |
| const char* InstructForm::cost() { |
| for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) { |
| if( strcmp(cur->_ident,AttributeForm::_ins_cost) == 0 ) { |
| return cur->_val; |
| } |
| } |
| return NULL; |
| } |
| |
| // Return count of top-level operands. |
| uint InstructForm::num_opnds() { |
| int num_opnds = _components.num_operands(); |
| |
| // Need special handling for matching some ideal nodes |
| // i.e. Matching a return node |
| /* |
| if( _matrule ) { |
| if( strcmp(_matrule->_opType,"Return" )==0 || |
| strcmp(_matrule->_opType,"Halt" )==0 ) |
| return 3; |
| } |
| */ |
| return num_opnds; |
| } |
| |
| const char* InstructForm::opnd_ident(int idx) { |
| return _components.at(idx)->_name; |
| } |
| |
| const char* InstructForm::unique_opnd_ident(uint idx) { |
| uint i; |
| for (i = 1; i < num_opnds(); ++i) { |
| if (unique_opnds_idx(i) == idx) { |
| break; |
| } |
| } |
| return (_components.at(i) != NULL) ? _components.at(i)->_name : ""; |
| } |
| |
| // Return count of unmatched operands. |
| uint InstructForm::num_post_match_opnds() { |
| uint num_post_match_opnds = _components.count(); |
| uint num_match_opnds = _components.match_count(); |
| num_post_match_opnds = num_post_match_opnds - num_match_opnds; |
| |
| return num_post_match_opnds; |
| } |
| |
| // Return the number of leaves below this complex operand |
| uint InstructForm::num_consts(FormDict &globals) const { |
| if ( ! _matrule) return 0; |
| |
| // This is a recursive invocation on all operands in the matchrule |
| return _matrule->num_consts(globals); |
| } |
| |
| // Constants in match rule with specified type |
| uint InstructForm::num_consts(FormDict &globals, Form::DataType type) const { |
| if ( ! _matrule) return 0; |
| |
| // This is a recursive invocation on all operands in the matchrule |
| return _matrule->num_consts(globals, type); |
| } |
| |
| |
| // Return the register class associated with 'leaf'. |
| const char *InstructForm::out_reg_class(FormDict &globals) { |
| assert( false, "InstructForm::out_reg_class(FormDict &globals); Not Implemented"); |
| |
| return NULL; |
| } |
| |
| |
| |
| // Lookup the starting position of inputs we are interested in wrt. ideal nodes |
| uint InstructForm::oper_input_base(FormDict &globals) { |
| if( !_matrule ) return 1; // Skip control for most nodes |
| |
| // Need special handling for matching some ideal nodes |
| // i.e. Matching a return node |
| if( strcmp(_matrule->_opType,"Return" )==0 || |
| strcmp(_matrule->_opType,"Rethrow" )==0 || |
| strcmp(_matrule->_opType,"TailCall" )==0 || |
| strcmp(_matrule->_opType,"TailJump" )==0 || |
| strcmp(_matrule->_opType,"SafePoint" )==0 || |
| strcmp(_matrule->_opType,"Halt" )==0 ) |
| return AdlcVMDeps::Parms; // Skip the machine-state edges |
| |
| if( _matrule->_rChild && |
| ( strcmp(_matrule->_rChild->_opType,"AryEq" )==0 || |
| strcmp(_matrule->_rChild->_opType,"StrComp" )==0 || |
| strcmp(_matrule->_rChild->_opType,"StrEquals" )==0 || |
| strcmp(_matrule->_rChild->_opType,"StrInflatedCopy" )==0 || |
| strcmp(_matrule->_rChild->_opType,"StrCompressedCopy" )==0 || |
| strcmp(_matrule->_rChild->_opType,"StrIndexOf")==0 || |
| strcmp(_matrule->_rChild->_opType,"StrIndexOfChar")==0 || |
| strcmp(_matrule->_rChild->_opType,"HasNegatives")==0 || |
| strcmp(_matrule->_rChild->_opType,"EncodeISOArray")==0)) { |
| // String.(compareTo/equals/indexOf) and Arrays.equals |
| // and sun.nio.cs.iso8859_1$Encoder.EncodeISOArray |
| // take 1 control and 1 memory edges. |
| // Also String.(compressedCopy/inflatedCopy). |
| return 2; |
| } |
| |
| // Check for handling of 'Memory' input/edge in the ideal world. |
| // The AD file writer is shielded from knowledge of these edges. |
| int base = 1; // Skip control |
| base += _matrule->needs_ideal_memory_edge(globals); |
| |
| // Also skip the base-oop value for uses of derived oops. |
| // The AD file writer is shielded from knowledge of these edges. |
| base += needs_base_oop_edge(globals); |
| |
| return base; |
| } |
| |
| // This function determines the order of the MachOper in _opnds[] |
| // by writing the operand names into the _components list. |
| // |
| // Implementation does not modify state of internal structures |
| void InstructForm::build_components() { |
| // Add top-level operands to the components |
| if (_matrule) _matrule->append_components(_localNames, _components); |
| |
| // Add parameters that "do not appear in match rule". |
| bool has_temp = false; |
| const char *name; |
| const char *kill_name = NULL; |
| for (_parameters.reset(); (name = _parameters.iter()) != NULL;) { |
| OperandForm *opForm = (OperandForm*)_localNames[name]; |
| |
| Effect* e = NULL; |
| { |
| const Form* form = _effects[name]; |
| e = form ? form->is_effect() : NULL; |
| } |
| |
| if (e != NULL) { |
| has_temp |= e->is(Component::TEMP); |
| |
| // KILLs must be declared after any TEMPs because TEMPs are real |
| // uses so their operand numbering must directly follow the real |
| // inputs from the match rule. Fixing the numbering seems |
| // complex so simply enforce the restriction during parse. |
| if (kill_name != NULL && |
| e->isa(Component::TEMP) && !e->isa(Component::DEF)) { |
| OperandForm* kill = (OperandForm*)_localNames[kill_name]; |
| globalAD->syntax_err(_linenum, "%s: %s %s must be at the end of the argument list\n", |
| _ident, kill->_ident, kill_name); |
| } else if (e->isa(Component::KILL) && !e->isa(Component::USE)) { |
| kill_name = name; |
| } |
| } |
| |
| const Component *component = _components.search(name); |
| if ( component == NULL ) { |
| if (e) { |
| _components.insert(name, opForm->_ident, e->_use_def, false); |
| component = _components.search(name); |
| if (component->isa(Component::USE) && !component->isa(Component::TEMP) && _matrule) { |
| const Form *form = globalAD->globalNames()[component->_type]; |
| assert( form, "component type must be a defined form"); |
| OperandForm *op = form->is_operand(); |
| if (op->_interface && op->_interface->is_RegInterface()) { |
| globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n", |
| _ident, opForm->_ident, name); |
| } |
| } |
| } else { |
| // This would be a nice warning but it triggers in a few places in a benign way |
| // if (_matrule != NULL && !expands()) { |
| // globalAD->syntax_err(_linenum, "%s: %s %s not mentioned in effect or match rule\n", |
| // _ident, opForm->_ident, name); |
| // } |
| _components.insert(name, opForm->_ident, Component::INVALID, false); |
| } |
| } |
| else if (e) { |
| // Component was found in the list |
| // Check if there is a new effect that requires an extra component. |
| // This happens when adding 'USE' to a component that is not yet one. |
| if ((!component->isa( Component::USE) && ((e->_use_def & Component::USE) != 0))) { |
| if (component->isa(Component::USE) && _matrule) { |
| const Form *form = globalAD->globalNames()[component->_type]; |
| assert( form, "component type must be a defined form"); |
| OperandForm *op = form->is_operand(); |
| if (op->_interface && op->_interface->is_RegInterface()) { |
| globalAD->syntax_err(_linenum, "%s: illegal USE of non-input: %s %s\n", |
| _ident, opForm->_ident, name); |
| } |
| } |
| _components.insert(name, opForm->_ident, e->_use_def, false); |
| } else { |
| Component *comp = (Component*)component; |
| comp->promote_use_def_info(e->_use_def); |
| } |
| // Component positions are zero based. |
| int pos = _components.operand_position(name); |
| assert( ! (component->isa(Component::DEF) && (pos >= 1)), |
| "Component::DEF can only occur in the first position"); |
| } |
| } |
| |
| // Resolving the interactions between expand rules and TEMPs would |
| // be complex so simply disallow it. |
| if (_matrule == NULL && has_temp) { |
| globalAD->syntax_err(_linenum, "%s: TEMPs without match rule isn't supported\n", _ident); |
| } |
| |
| return; |
| } |
| |
| // Return zero-based position in component list; -1 if not in list. |
| int InstructForm::operand_position(const char *name, int usedef) { |
| return unique_opnds_idx(_components.operand_position(name, usedef, this)); |
| } |
| |
| int InstructForm::operand_position_format(const char *name) { |
| return unique_opnds_idx(_components.operand_position_format(name, this)); |
| } |
| |
| // Return zero-based position in component list; -1 if not in list. |
| int InstructForm::label_position() { |
| return unique_opnds_idx(_components.label_position()); |
| } |
| |
| int InstructForm::method_position() { |
| return unique_opnds_idx(_components.method_position()); |
| } |
| |
| // Return number of relocation entries needed for this instruction. |
| uint InstructForm::reloc(FormDict &globals) { |
| uint reloc_entries = 0; |
| // Check for "Call" nodes |
| if ( is_ideal_call() ) ++reloc_entries; |
| if ( is_ideal_return() ) ++reloc_entries; |
| if ( is_ideal_safepoint() ) ++reloc_entries; |
| |
| |
| // Check if operands MAYBE oop pointers, by checking for ConP elements |
| // Proceed through the leaves of the match-tree and check for ConPs |
| if ( _matrule != NULL ) { |
| uint position = 0; |
| const char *result = NULL; |
| const char *name = NULL; |
| const char *opType = NULL; |
| while (_matrule->base_operand(position, globals, result, name, opType)) { |
| if ( strcmp(opType,"ConP") == 0 ) { |
| #ifdef SPARC |
| reloc_entries += 2; // 1 for sethi + 1 for setlo |
| #else |
| ++reloc_entries; |
| #endif |
| } |
| ++position; |
| } |
| } |
| |
| // Above is only a conservative estimate |
| // because it did not check contents of operand classes. |
| // !!!!! !!!!! |
| // Add 1 to reloc info for each operand class in the component list. |
| Component *comp; |
| _components.reset(); |
| while ( (comp = _components.iter()) != NULL ) { |
| const Form *form = globals[comp->_type]; |
| assert( form, "Did not find component's type in global names"); |
| const OpClassForm *opc = form->is_opclass(); |
| const OperandForm *oper = form->is_operand(); |
| if ( opc && (oper == NULL) ) { |
| ++reloc_entries; |
| } else if ( oper ) { |
| // floats and doubles loaded out of method's constant pool require reloc info |
| Form::DataType type = oper->is_base_constant(globals); |
| if ( (type == Form::idealF) || (type == Form::idealD) ) { |
| ++reloc_entries; |
| } |
| } |
| } |
| |
| // Float and Double constants may come from the CodeBuffer table |
| // and require relocatable addresses for access |
| // !!!!! |
| // Check for any component being an immediate float or double. |
| Form::DataType data_type = is_chain_of_constant(globals); |
| if( data_type==idealD || data_type==idealF ) { |
| #ifdef SPARC |
| // sparc required more relocation entries for floating constants |
| // (expires 9/98) |
| reloc_entries += 6; |
| #else |
| reloc_entries++; |
| #endif |
| } |
| |
| return reloc_entries; |
| } |
| |
| // Utility function defined in archDesc.cpp |
| extern bool is_def(int usedef); |
| |
| // Return the result of reducing an instruction |
| const char *InstructForm::reduce_result() { |
| const char* result = "Universe"; // default |
| _components.reset(); |
| Component *comp = _components.iter(); |
| if (comp != NULL && comp->isa(Component::DEF)) { |
| result = comp->_type; |
| // Override this if the rule is a store operation: |
| if (_matrule && _matrule->_rChild && |
| is_store_to_memory(_matrule->_rChild->_opType)) |
| result = "Universe"; |
| } |
| return result; |
| } |
| |
| // Return the name of the operand on the right hand side of the binary match |
| // Return NULL if there is no right hand side |
| const char *InstructForm::reduce_right(FormDict &globals) const { |
| if( _matrule == NULL ) return NULL; |
| return _matrule->reduce_right(globals); |
| } |
| |
| // Similar for left |
| const char *InstructForm::reduce_left(FormDict &globals) const { |
| if( _matrule == NULL ) return NULL; |
| return _matrule->reduce_left(globals); |
| } |
| |
| |
| // Base class for this instruction, MachNode except for calls |
| const char *InstructForm::mach_base_class(FormDict &globals) const { |
| if( is_ideal_call() == Form::JAVA_STATIC ) { |
| return "MachCallStaticJavaNode"; |
| } |
| else if( is_ideal_call() == Form::JAVA_DYNAMIC ) { |
| return "MachCallDynamicJavaNode"; |
| } |
| else if( is_ideal_call() == Form::JAVA_RUNTIME ) { |
| return "MachCallRuntimeNode"; |
| } |
| else if( is_ideal_call() == Form::JAVA_LEAF ) { |
| return "MachCallLeafNode"; |
| } |
| else if (is_ideal_return()) { |
| return "MachReturnNode"; |
| } |
| else if (is_ideal_halt()) { |
| return "MachHaltNode"; |
| } |
| else if (is_ideal_safepoint()) { |
| return "MachSafePointNode"; |
| } |
| else if (is_ideal_if()) { |
| return "MachIfNode"; |
| } |
| else if (is_ideal_goto()) { |
| return "MachGotoNode"; |
| } |
| else if (is_ideal_fastlock()) { |
| return "MachFastLockNode"; |
| } |
| else if (is_ideal_nop()) { |
| return "MachNopNode"; |
| } |
| else if (is_mach_constant()) { |
| return "MachConstantNode"; |
| } |
| else if (captures_bottom_type(globals)) { |
| return "MachTypeNode"; |
| } else { |
| return "MachNode"; |
| } |
| assert( false, "ShouldNotReachHere()"); |
| return NULL; |
| } |
| |
| // Compare the instruction predicates for textual equality |
| bool equivalent_predicates( const InstructForm *instr1, const InstructForm *instr2 ) { |
| const Predicate *pred1 = instr1->_predicate; |
| const Predicate *pred2 = instr2->_predicate; |
| if( pred1 == NULL && pred2 == NULL ) { |
| // no predicates means they are identical |
| return true; |
| } |
| if( pred1 != NULL && pred2 != NULL ) { |
| // compare the predicates |
| if (ADLParser::equivalent_expressions(pred1->_pred, pred2->_pred)) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| // Check if this instruction can cisc-spill to 'alternate' |
| bool InstructForm::cisc_spills_to(ArchDesc &AD, InstructForm *instr) { |
| assert( _matrule != NULL && instr->_matrule != NULL, "must have match rules"); |
| // Do not replace if a cisc-version has been found. |
| if( cisc_spill_operand() != Not_cisc_spillable ) return false; |
| |
| int cisc_spill_operand = Maybe_cisc_spillable; |
| char *result = NULL; |
| char *result2 = NULL; |
| const char *op_name = NULL; |
| const char *reg_type = NULL; |
| FormDict &globals = AD.globalNames(); |
| cisc_spill_operand = _matrule->matchrule_cisc_spill_match(globals, AD.get_registers(), instr->_matrule, op_name, reg_type); |
| if( (cisc_spill_operand != Not_cisc_spillable) && (op_name != NULL) && equivalent_predicates(this, instr) ) { |
| cisc_spill_operand = operand_position(op_name, Component::USE); |
| int def_oper = operand_position(op_name, Component::DEF); |
| if( def_oper == NameList::Not_in_list && instr->num_opnds() == num_opnds()) { |
| // Do not support cisc-spilling for destination operands and |
| // make sure they have the same number of operands. |
| _cisc_spill_alternate = instr; |
| instr->set_cisc_alternate(true); |
| if( AD._cisc_spill_debug ) { |
| fprintf(stderr, "Instruction %s cisc-spills-to %s\n", _ident, instr->_ident); |
| fprintf(stderr, " using operand %s %s at index %d\n", reg_type, op_name, cisc_spill_operand); |
| } |
| // Record that a stack-version of the reg_mask is needed |
| // !!!!! |
| OperandForm *oper = (OperandForm*)(globals[reg_type]->is_operand()); |
| assert( oper != NULL, "cisc-spilling non operand"); |
| const char *reg_class_name = oper->constrained_reg_class(); |
| AD.set_stack_or_reg(reg_class_name); |
| const char *reg_mask_name = AD.reg_mask(*oper); |
| set_cisc_reg_mask_name(reg_mask_name); |
| const char *stack_or_reg_mask_name = AD.stack_or_reg_mask(*oper); |
| } else { |
| cisc_spill_operand = Not_cisc_spillable; |
| } |
| } else { |
| cisc_spill_operand = Not_cisc_spillable; |
| } |
| |
| set_cisc_spill_operand(cisc_spill_operand); |
| return (cisc_spill_operand != Not_cisc_spillable); |
| } |
| |
| // Check to see if this instruction can be replaced with the short branch |
| // instruction `short-branch' |
| bool InstructForm::check_branch_variant(ArchDesc &AD, InstructForm *short_branch) { |
| if (_matrule != NULL && |
| this != short_branch && // Don't match myself |
| !is_short_branch() && // Don't match another short branch variant |
| reduce_result() != NULL && |
| strstr(_ident, "restoreMask") == NULL && // Don't match side effects |
| strcmp(reduce_result(), short_branch->reduce_result()) == 0 && |
| _matrule->equivalent(AD.globalNames(), short_branch->_matrule)) { |
| // The instructions are equivalent. |
| |
| // Now verify that both instructions have the same parameters and |
| // the same effects. Both branch forms should have the same inputs |
| // and resulting projections to correctly replace a long branch node |
| // with corresponding short branch node during code generation. |
| |
| bool different = false; |
| if (short_branch->_components.count() != _components.count()) { |
| different = true; |
| } else if (_components.count() > 0) { |
| short_branch->_components.reset(); |
| _components.reset(); |
| Component *comp; |
| while ((comp = _components.iter()) != NULL) { |
| Component *short_comp = short_branch->_components.iter(); |
| if (short_comp == NULL || |
| short_comp->_type != comp->_type || |
| short_comp->_usedef != comp->_usedef) { |
| different = true; |
| break; |
| } |
| } |
| if (short_branch->_components.iter() != NULL) |
| different = true; |
| } |
| if (different) { |
| globalAD->syntax_err(short_branch->_linenum, "Instruction %s and its short form %s have different parameters\n", _ident, short_branch->_ident); |
| } |
| if (AD._adl_debug > 1 || AD._short_branch_debug) { |
| fprintf(stderr, "Instruction %s has short form %s\n", _ident, short_branch->_ident); |
| } |
| _short_branch_form = short_branch; |
| return true; |
| } |
| return false; |
| } |
| |
| |
| // --------------------------- FILE *output_routines |
| // |
| // Generate the format call for the replacement variable |
| void InstructForm::rep_var_format(FILE *fp, const char *rep_var) { |
| // Handle special constant table variables. |
| if (strcmp(rep_var, "constanttablebase") == 0) { |
| fprintf(fp, "char reg[128]; ra->dump_register(in(mach_constant_base_node_input()), reg);\n"); |
| fprintf(fp, " st->print(\"%%s\", reg);\n"); |
| return; |
| } |
| if (strcmp(rep_var, "constantoffset") == 0) { |
| fprintf(fp, "st->print(\"#%%d\", constant_offset_unchecked());\n"); |
| return; |
| } |
| if (strcmp(rep_var, "constantaddress") == 0) { |
| fprintf(fp, "st->print(\"constant table base + #%%d\", constant_offset_unchecked());\n"); |
| return; |
| } |
| |
| // Find replacement variable's type |
| const Form *form = _localNames[rep_var]; |
| if (form == NULL) { |
| globalAD->syntax_err(_linenum, "Unknown replacement variable %s in format statement of %s.", |
| rep_var, _ident); |
| return; |
| } |
| OpClassForm *opc = form->is_opclass(); |
| assert( opc, "replacement variable was not found in local names"); |
| // Lookup the index position of the replacement variable |
| int idx = operand_position_format(rep_var); |
| if ( idx == -1 ) { |
| globalAD->syntax_err(_linenum, "Could not find replacement variable %s in format statement of %s.\n", |
| rep_var, _ident); |
| assert(strcmp(opc->_ident, "label") == 0, "Unimplemented"); |
| return; |
| } |
| |
| if (is_noninput_operand(idx)) { |
| // This component isn't in the input array. Print out the static |
| // name of the register. |
| OperandForm* oper = form->is_operand(); |
| if (oper != NULL && oper->is_bound_register()) { |
| const RegDef* first = oper->get_RegClass()->find_first_elem(); |
| fprintf(fp, " st->print_raw(\"%s\");\n", first->_regname); |
| } else { |
| globalAD->syntax_err(_linenum, "In %s can't find format for %s %s", _ident, opc->_ident, rep_var); |
| } |
| } else { |
| // Output the format call for this operand |
| fprintf(fp,"opnd_array(%d)->",idx); |
| if (idx == 0) |
| fprintf(fp,"int_format(ra, this, st); // %s\n", rep_var); |
| else |
| fprintf(fp,"ext_format(ra, this,idx%d, st); // %s\n", idx, rep_var ); |
| } |
| } |
| |
| // Seach through operands to determine parameters unique positions. |
| void InstructForm::set_unique_opnds() { |
| uint* uniq_idx = NULL; |
| uint nopnds = num_opnds(); |
| uint num_uniq = nopnds; |
| uint i; |
| _uniq_idx_length = 0; |
| if (nopnds > 0) { |
| // Allocate index array. Worst case we're mapping from each |
| // component back to an index and any DEF always goes at 0 so the |
| // length of the array has to be the number of components + 1. |
| _uniq_idx_length = _components.count() + 1; |
| uniq_idx = (uint*) malloc(sizeof(uint) * _uniq_idx_length); |
| for (i = 0; i < _uniq_idx_length; i++) { |
| uniq_idx[i] = i; |
| } |
| } |
| // Do it only if there is a match rule and no expand rule. With an |
| // expand rule it is done by creating new mach node in Expand() |
| // method. |
| if (nopnds > 0 && _matrule != NULL && _exprule == NULL) { |
| const char *name; |
| uint count; |
| bool has_dupl_use = false; |
| |
| _parameters.reset(); |
| while ((name = _parameters.iter()) != NULL) { |
| count = 0; |
| uint position = 0; |
| uint uniq_position = 0; |
| _components.reset(); |
| Component *comp = NULL; |
| if (sets_result()) { |
| comp = _components.iter(); |
| position++; |
| } |
| // The next code is copied from the method operand_position(). |
| for (; (comp = _components.iter()) != NULL; ++position) { |
| // When the first component is not a DEF, |
| // leave space for the result operand! |
| if (position==0 && (!comp->isa(Component::DEF))) { |
| ++position; |
| } |
| if (strcmp(name, comp->_name) == 0) { |
| if (++count > 1) { |
| assert(position < _uniq_idx_length, "out of bounds"); |
| uniq_idx[position] = uniq_position; |
| has_dupl_use = true; |
| } else { |
| uniq_position = position; |
| } |
| } |
| if (comp->isa(Component::DEF) && comp->isa(Component::USE)) { |
| ++position; |
| if (position != 1) |
| --position; // only use two slots for the 1st USE_DEF |
| } |
| } |
| } |
| if (has_dupl_use) { |
| for (i = 1; i < nopnds; i++) { |
| if (i != uniq_idx[i]) { |
| break; |
| } |
| } |
| uint j = i; |
| for (; i < nopnds; i++) { |
| if (i == uniq_idx[i]) { |
| uniq_idx[i] = j++; |
| } |
| } |
| num_uniq = j; |
| } |
| } |
| _uniq_idx = uniq_idx; |
| _num_uniq = num_uniq; |
| } |
| |
| // Generate index values needed for determining the operand position |
| void InstructForm::index_temps(FILE *fp, FormDict &globals, const char *prefix, const char *receiver) { |
| uint idx = 0; // position of operand in match rule |
| int cur_num_opnds = num_opnds(); |
| |
| // Compute the index into vector of operand pointers: |
| // idx0=0 is used to indicate that info comes from this same node, not from input edge. |
| // idx1 starts at oper_input_base() |
| if ( cur_num_opnds >= 1 ) { |
| fprintf(fp," // Start at oper_input_base() and count operands\n"); |
| fprintf(fp," unsigned %sidx0 = %d;\n", prefix, oper_input_base(globals)); |
| fprintf(fp," unsigned %sidx1 = %d;", prefix, oper_input_base(globals)); |
| fprintf(fp," \t// %s\n", unique_opnd_ident(1)); |
| |
| // Generate starting points for other unique operands if they exist |
| for ( idx = 2; idx < num_unique_opnds(); ++idx ) { |
| if( *receiver == 0 ) { |
| fprintf(fp," unsigned %sidx%d = %sidx%d + opnd_array(%d)->num_edges();", |
| prefix, idx, prefix, idx-1, idx-1 ); |
| } else { |
| fprintf(fp," unsigned %sidx%d = %sidx%d + %s_opnds[%d]->num_edges();", |
| prefix, idx, prefix, idx-1, receiver, idx-1 ); |
| } |
| fprintf(fp," \t// %s\n", unique_opnd_ident(idx)); |
| } |
| } |
| if( *receiver != 0 ) { |
| // This value is used by generate_peepreplace when copying a node. |
| // Don't emit it in other cases since it can hide bugs with the |
| // use invalid idx's. |
| fprintf(fp," unsigned %sidx%d = %sreq(); \n", prefix, idx, receiver); |
| } |
| |
| } |
| |
| // --------------------------- |
| bool InstructForm::verify() { |
| // !!!!! !!!!! |
| // Check that a "label" operand occurs last in the operand list, if present |
| return true; |
| } |
| |
| void InstructForm::dump() { |
| output(stderr); |
| } |
| |
| void InstructForm::output(FILE *fp) { |
| fprintf(fp,"\nInstruction: %s\n", (_ident?_ident:"")); |
| if (_matrule) _matrule->output(fp); |
| if (_insencode) _insencode->output(fp); |
| if (_constant) _constant->output(fp); |
| if (_opcode) _opcode->output(fp); |
| if (_attribs) _attribs->output(fp); |
| if (_predicate) _predicate->output(fp); |
| if (_effects.Size()) { |
| fprintf(fp,"Effects\n"); |
| _effects.dump(); |
| } |
| if (_exprule) _exprule->output(fp); |
| if (_rewrule) _rewrule->output(fp); |
| if (_format) _format->output(fp); |
| if (_peephole) _peephole->output(fp); |
| } |
| |
| void MachNodeForm::dump() { |
| output(stderr); |
| } |
| |
| void MachNodeForm::output(FILE *fp) { |
| fprintf(fp,"\nMachNode: %s\n", (_ident?_ident:"")); |
| } |
| |
| //------------------------------build_predicate-------------------------------- |
| // Build instruction predicates. If the user uses the same operand name |
| // twice, we need to check that the operands are pointer-eequivalent in |
| // the DFA during the labeling process. |
| Predicate *InstructForm::build_predicate() { |
| const int buflen = 1024; |
| char buf[buflen], *s=buf; |
| Dict names(cmpstr,hashstr,Form::arena); // Map Names to counts |
| |
| MatchNode *mnode = |
| strcmp(_matrule->_opType, "Set") ? _matrule : _matrule->_rChild; |
| mnode->count_instr_names(names); |
| |
| uint first = 1; |
| // Start with the predicate supplied in the .ad file. |
| if (_predicate) { |
| if (first) first = 0; |
| strcpy(s, "("); s += strlen(s); |
| strncpy(s, _predicate->_pred, buflen - strlen(s) - 1); |
| s += strlen(s); |
| strcpy(s, ")"); s += strlen(s); |
| } |
| for( DictI i(&names); i.test(); ++i ) { |
| uintptr_t cnt = (uintptr_t)i._value; |
| if( cnt > 1 ) { // Need a predicate at all? |
| assert( cnt == 2, "Unimplemented" ); |
| // Handle many pairs |
| if( first ) first=0; |
| else { // All tests must pass, so use '&&' |
| strcpy(s," && "); |
| s += strlen(s); |
| } |
| // Add predicate to working buffer |
| sprintf(s,"/*%s*/(",(char*)i._key); |
| s += strlen(s); |
| mnode->build_instr_pred(s,(char*)i._key,0); |
| s += strlen(s); |
| strcpy(s," == "); s += strlen(s); |
| mnode->build_instr_pred(s,(char*)i._key,1); |
| s += strlen(s); |
| strcpy(s,")"); s += strlen(s); |
| } |
| } |
| if( s == buf ) s = NULL; |
| else { |
| assert( strlen(buf) < sizeof(buf), "String buffer overflow" ); |
| s = strdup(buf); |
| } |
| return new Predicate(s); |
| } |
| |
| //------------------------------EncodeForm------------------------------------- |
| // Constructor |
| EncodeForm::EncodeForm() |
| : _encClass(cmpstr,hashstr, Form::arena) { |
| } |
| EncodeForm::~EncodeForm() { |
| } |
| |
| // record a new register class |
| EncClass *EncodeForm::add_EncClass(const char *className) { |
| EncClass *encClass = new EncClass(className); |
| _eclasses.addName(className); |
| _encClass.Insert(className,encClass); |
| return encClass; |
| } |
| |
| // Lookup the function body for an encoding class |
| EncClass *EncodeForm::encClass(const char *className) { |
| assert( className != NULL, "Must provide a defined encoding name"); |
| |
| EncClass *encClass = (EncClass*)_encClass[className]; |
| return encClass; |
| } |
| |
| // Lookup the function body for an encoding class |
| const char *EncodeForm::encClassBody(const char *className) { |
| if( className == NULL ) return NULL; |
| |
| EncClass *encClass = (EncClass*)_encClass[className]; |
| assert( encClass != NULL, "Encode Class is missing."); |
| encClass->_code.reset(); |
| const char *code = (const char*)encClass->_code.iter(); |
| assert( code != NULL, "Found an empty encode class body."); |
| |
| return code; |
| } |
| |
| // Lookup the function body for an encoding class |
| const char *EncodeForm::encClassPrototype(const char *className) { |
| assert( className != NULL, "Encode class name must be non NULL."); |
| |
| return className; |
| } |
| |
| void EncodeForm::dump() { // Debug printer |
| output(stderr); |
| } |
| |
| void EncodeForm::output(FILE *fp) { // Write info to output files |
| const char *name; |
| fprintf(fp,"\n"); |
| fprintf(fp,"-------------------- Dump EncodeForm --------------------\n"); |
| for (_eclasses.reset(); (name = _eclasses.iter()) != NULL;) { |
| ((EncClass*)_encClass[name])->output(fp); |
| } |
| fprintf(fp,"-------------------- end EncodeForm --------------------\n"); |
| } |
| //------------------------------EncClass--------------------------------------- |
| EncClass::EncClass(const char *name) |
| : _localNames(cmpstr,hashstr, Form::arena), _name(name) { |
| } |
| EncClass::~EncClass() { |
| } |
| |
| // Add a parameter <type,name> pair |
| void EncClass::add_parameter(const char *parameter_type, const char *parameter_name) { |
| _parameter_type.addName( parameter_type ); |
| _parameter_name.addName( parameter_name ); |
| } |
| |
| // Verify operand types in parameter list |
| bool EncClass::check_parameter_types(FormDict &globals) { |
| // !!!!! |
| return false; |
| } |
| |
| // Add the decomposed "code" sections of an encoding's code-block |
| void EncClass::add_code(const char *code) { |
| _code.addName(code); |
| } |
| |
| // Add the decomposed "replacement variables" of an encoding's code-block |
| void EncClass::add_rep_var(char *replacement_var) { |
| _code.addName(NameList::_signal); |
| _rep_vars.addName(replacement_var); |
| } |
| |
| // Lookup the function body for an encoding class |
| int EncClass::rep_var_index(const char *rep_var) { |
| uint position = 0; |
| const char *name = NULL; |
| |
| _parameter_name.reset(); |
| while ( (name = _parameter_name.iter()) != NULL ) { |
| if ( strcmp(rep_var,name) == 0 ) return position; |
| ++position; |
| } |
| |
| return -1; |
| } |
| |
| // Check after parsing |
| bool EncClass::verify() { |
| // 1!!!! |
| // Check that each replacement variable, '$name' in architecture description |
| // is actually a local variable for this encode class, or a reserved name |
| // "primary, secondary, tertiary" |
| return true; |
| } |
| |
| void EncClass::dump() { |
| output(stderr); |
| } |
| |
| // Write info to output files |
| void EncClass::output(FILE *fp) { |
| fprintf(fp,"EncClass: %s", (_name ? _name : "")); |
| |
| // Output the parameter list |
| _parameter_type.reset(); |
| _parameter_name.reset(); |
| const char *type = _parameter_type.iter(); |
| const char *name = _parameter_name.iter(); |
| fprintf(fp, " ( "); |
| for ( ; (type != NULL) && (name != NULL); |
| (type = _parameter_type.iter()), (name = _parameter_name.iter()) ) { |
| fprintf(fp, " %s %s,", type, name); |
| } |
| fprintf(fp, " ) "); |
| |
| // Output the code block |
| _code.reset(); |
| _rep_vars.reset(); |
| const char *code; |
| while ( (code = _code.iter()) != NULL ) { |
| if ( _code.is_signal(code) ) { |
| // A replacement variable |
| const char *rep_var = _rep_vars.iter(); |
| fprintf(fp,"($%s)", rep_var); |
| } else { |
| // A section of code |
| fprintf(fp,"%s", code); |
| } |
| } |
| |
| } |
| |
| //------------------------------Opcode----------------------------------------- |
| Opcode::Opcode(char *primary, char *secondary, char *tertiary) |
| : _primary(primary), _secondary(secondary), _tertiary(tertiary) { |
| } |
| |
| Opcode::~Opcode() { |
| } |
| |
| Opcode::opcode_type Opcode::as_opcode_type(const char *param) { |
| if( strcmp(param,"primary") == 0 ) { |
| return Opcode::PRIMARY; |
| } |
| else if( strcmp(param,"secondary") == 0 ) { |
| return Opcode::SECONDARY; |
| } |
| else if( strcmp(param,"tertiary") == 0 ) { |
| return Opcode::TERTIARY; |
| } |
| return Opcode::NOT_AN_OPCODE; |
| } |
| |
| bool Opcode::print_opcode(FILE *fp, Opcode::opcode_type desired_opcode) { |
| // Default values previously provided by MachNode::primary()... |
| const char *description = NULL; |
| const char *value = NULL; |
| // Check if user provided any opcode definitions |
| if( this != NULL ) { |
| // Update 'value' if user provided a definition in the instruction |
| switch (desired_opcode) { |
| case PRIMARY: |
| description = "primary()"; |
| if( _primary != NULL) { value = _primary; } |
| break; |
| case SECONDARY: |
| description = "secondary()"; |
| if( _secondary != NULL ) { value = _secondary; } |
| break; |
| case TERTIARY: |
| description = "tertiary()"; |
| if( _tertiary != NULL ) { value = _tertiary; } |
| break; |
| default: |
| assert( false, "ShouldNotReachHere();"); |
| break; |
| } |
| } |
| if (value != NULL) { |
| fprintf(fp, "(%s /*%s*/)", value, description); |
| } |
| return value != NULL; |
| } |
| |
| void Opcode::dump() { |
| output(stderr); |
| } |
| |
| // Write info to output files |
| void Opcode::output(FILE *fp) { |
| if (_primary != NULL) fprintf(fp,"Primary opcode: %s\n", _primary); |
| if (_secondary != NULL) fprintf(fp,"Secondary opcode: %s\n", _secondary); |
| if (_tertiary != NULL) fprintf(fp,"Tertiary opcode: %s\n", _tertiary); |
| } |
| |
| //------------------------------InsEncode-------------------------------------- |
| InsEncode::InsEncode() { |
| } |
| InsEncode::~InsEncode() { |
| } |
| |
| // Add "encode class name" and its parameters |
| NameAndList *InsEncode::add_encode(char *encoding) { |
| assert( encoding != NULL, "Must provide name for encoding"); |
| |
| // add_parameter(NameList::_signal); |
| NameAndList *encode = new NameAndList(encoding); |
| _encoding.addName((char*)encode); |
| |
| return encode; |
| } |
| |
| // Access the list of encodings |
| void InsEncode::reset() { |
| _encoding.reset(); |
| // _parameter.reset(); |
| } |
| const char* InsEncode::encode_class_iter() { |
| NameAndList *encode_class = (NameAndList*)_encoding.iter(); |
| return ( encode_class != NULL ? encode_class->name() : NULL ); |
| } |
| // Obtain parameter name from zero based index |
| const char *InsEncode::rep_var_name(InstructForm &inst, uint param_no) { |
| NameAndList *params = (NameAndList*)_encoding.current(); |
| assert( params != NULL, "Internal Error"); |
| const char *param = (*params)[param_no]; |
| |
| // Remove '$' if parser placed it there. |
| return ( param != NULL && *param == '$') ? (param+1) : param; |
| } |
| |
| void InsEncode::dump() { |
| output(stderr); |
| } |
| |
| // Write info to output files |
| void InsEncode::output(FILE *fp) { |
| NameAndList *encoding = NULL; |
| const char *parameter = NULL; |
| |
| fprintf(fp,"InsEncode: "); |
| _encoding.reset(); |
| |
| while ( (encoding = (NameAndList*)_encoding.iter()) != 0 ) { |
| // Output the encoding being used |
| fprintf(fp,"%s(", encoding->name() ); |
| |
| // Output its parameter list, if any |
| bool first_param = true; |
| encoding->reset(); |
| while ( (parameter = encoding->iter()) != 0 ) { |
| // Output the ',' between parameters |
| if ( ! first_param ) fprintf(fp,", "); |
| first_param = false; |
| // Output the parameter |
| fprintf(fp,"%s", parameter); |
| } // done with parameters |
| fprintf(fp,") "); |
| } // done with encodings |
| |
| fprintf(fp,"\n"); |
| } |
| |
| //------------------------------Effect----------------------------------------- |
| static int effect_lookup(const char *name) { |
| if (!strcmp(name, "USE")) return Component::USE; |
| if (!strcmp(name, "DEF")) return Component::DEF; |
| if (!strcmp(name, "USE_DEF")) return Component::USE_DEF; |
| if (!strcmp(name, "KILL")) return Component::KILL; |
| if (!strcmp(name, "USE_KILL")) return Component::USE_KILL; |
| if (!strcmp(name, "TEMP")) return Component::TEMP; |
| if (!strcmp(name, "TEMP_DEF")) return Component::TEMP_DEF; |
| if (!strcmp(name, "INVALID")) return Component::INVALID; |
| if (!strcmp(name, "CALL")) return Component::CALL; |
| assert(false,"Invalid effect name specified\n"); |
| return Component::INVALID; |
| } |
| |
| const char *Component::getUsedefName() { |
| switch (_usedef) { |
| case Component::INVALID: return "INVALID"; break; |
| case Component::USE: return "USE"; break; |
| case Component::USE_DEF: return "USE_DEF"; break; |
| case Component::USE_KILL: return "USE_KILL"; break; |
| case Component::KILL: return "KILL"; break; |
| case Component::TEMP: return "TEMP"; break; |
| case Component::TEMP_DEF: return "TEMP_DEF"; break; |
| case Component::DEF: return "DEF"; break; |
| case Component::CALL: return "CALL"; break; |
| default: assert(false, "unknown effect"); |
| } |
| return "Undefined Use/Def info"; |
| } |
| |
| Effect::Effect(const char *name) : _name(name), _use_def(effect_lookup(name)) { |
| _ftype = Form::EFF; |
| } |
| |
| Effect::~Effect() { |
| } |
| |
| // Dynamic type check |
| Effect *Effect::is_effect() const { |
| return (Effect*)this; |
| } |
| |
| |
| // True if this component is equal to the parameter. |
| bool Effect::is(int use_def_kill_enum) const { |
| return (_use_def == use_def_kill_enum ? true : false); |
| } |
| // True if this component is used/def'd/kill'd as the parameter suggests. |
| bool Effect::isa(int use_def_kill_enum) const { |
| return (_use_def & use_def_kill_enum) == use_def_kill_enum; |
| } |
| |
| void Effect::dump() { |
| output(stderr); |
| } |
| |
| void Effect::output(FILE *fp) { // Write info to output files |
| fprintf(fp,"Effect: %s\n", (_name?_name:"")); |
| } |
| |
| //------------------------------ExpandRule------------------------------------- |
| ExpandRule::ExpandRule() : _expand_instrs(), |
| _newopconst(cmpstr, hashstr, Form::arena) { |
| _ftype = Form::EXP; |
| } |
| |
| ExpandRule::~ExpandRule() { // Destructor |
| } |
| |
| void ExpandRule::add_instruction(NameAndList *instruction_name_and_operand_list) { |
| _expand_instrs.addName((char*)instruction_name_and_operand_list); |
| } |
| |
| void ExpandRule::reset_instructions() { |
| _expand_instrs.reset(); |
| } |
| |
| NameAndList* ExpandRule::iter_instructions() { |
| return (NameAndList*)_expand_instrs.iter(); |
| } |
| |
| |
| void ExpandRule::dump() { |
| output(stderr); |
| } |
| |
| void ExpandRule::output(FILE *fp) { // Write info to output files |
| NameAndList *expand_instr = NULL; |
| const char *opid = NULL; |
| |
| fprintf(fp,"\nExpand Rule:\n"); |
| |
| // Iterate over the instructions 'node' expands into |
| for(reset_instructions(); (expand_instr = iter_instructions()) != NULL; ) { |
| fprintf(fp,"%s(", expand_instr->name()); |
| |
| // iterate over the operand list |
| for( expand_instr->reset(); (opid = expand_instr->iter()) != NULL; ) { |
| fprintf(fp,"%s ", opid); |
| } |
| fprintf(fp,");\n"); |
| } |
| } |
| |
| //------------------------------RewriteRule------------------------------------ |
| RewriteRule::RewriteRule(char* params, char* block) |
| : _tempParams(params), _tempBlock(block) { }; // Constructor |
| RewriteRule::~RewriteRule() { // Destructor |
| } |
| |
| void RewriteRule::dump() { |
| output(stderr); |
| } |
| |
| void RewriteRule::output(FILE *fp) { // Write info to output files |
| fprintf(fp,"\nRewrite Rule:\n%s\n%s\n", |
| (_tempParams?_tempParams:""), |
| (_tempBlock?_tempBlock:"")); |
| } |
| |
| |
| //==============================MachNodes====================================== |
| //------------------------------MachNodeForm----------------------------------- |
| MachNodeForm::MachNodeForm(char *id) |
| : _ident(id) { |
| } |
| |
| MachNodeForm::~MachNodeForm() { |
| } |
| |
| MachNodeForm *MachNodeForm::is_machnode() const { |
| return (MachNodeForm*)this; |
| } |
| |
| //==============================Operand Classes================================ |
| //------------------------------OpClassForm------------------------------------ |
| OpClassForm::OpClassForm(const char* id) : _ident(id) { |
| _ftype = Form::OPCLASS; |
| } |
| |
| OpClassForm::~OpClassForm() { |
| } |
| |
| bool OpClassForm::ideal_only() const { return 0; } |
| |
| OpClassForm *OpClassForm::is_opclass() const { |
| return (OpClassForm*)this; |
| } |
| |
| Form::InterfaceType OpClassForm::interface_type(FormDict &globals) const { |
| if( _oplst.count() == 0 ) return Form::no_interface; |
| |
| // Check that my operands have the same interface type |
| Form::InterfaceType interface; |
| bool first = true; |
| NameList &op_list = (NameList &)_oplst; |
| op_list.reset(); |
| const char *op_name; |
| while( (op_name = op_list.iter()) != NULL ) { |
| const Form *form = globals[op_name]; |
| OperandForm *operand = form->is_operand(); |
| assert( operand, "Entry in operand class that is not an operand"); |
| if( first ) { |
| first = false; |
| interface = operand->interface_type(globals); |
| } else { |
| interface = (interface == operand->interface_type(globals) ? interface : Form::no_interface); |
| } |
| } |
| return interface; |
| } |
| |
| bool OpClassForm::stack_slots_only(FormDict &globals) const { |
| if( _oplst.count() == 0 ) return false; // how? |
| |
| NameList &op_list = (NameList &)_oplst; |
| op_list.reset(); |
| const char *op_name; |
| while( (op_name = op_list.iter()) != NULL ) { |
| const Form *form = globals[op_name]; |
| OperandForm *operand = form->is_operand(); |
| assert( operand, "Entry in operand class that is not an operand"); |
| if( !operand->stack_slots_only(globals) ) return false; |
| } |
| return true; |
| } |
| |
| |
| void OpClassForm::dump() { |
| output(stderr); |
| } |
| |
| void OpClassForm::output(FILE *fp) { |
| const char *name; |
| fprintf(fp,"\nOperand Class: %s\n", (_ident?_ident:"")); |
| fprintf(fp,"\nCount = %d\n", _oplst.count()); |
| for(_oplst.reset(); (name = _oplst.iter()) != NULL;) { |
| fprintf(fp,"%s, ",name); |
| } |
| fprintf(fp,"\n"); |
| } |
| |
| |
| //==============================Operands======================================= |
| //------------------------------OperandForm------------------------------------ |
| OperandForm::OperandForm(const char* id) |
| : OpClassForm(id), _ideal_only(false), |
| _localNames(cmpstr, hashstr, Form::arena) { |
| _ftype = Form::OPER; |
| |
| _matrule = NULL; |
| _interface = NULL; |
| _attribs = NULL; |
| _predicate = NULL; |
| _constraint= NULL; |
| _construct = NULL; |
| _format = NULL; |
| } |
| OperandForm::OperandForm(const char* id, bool ideal_only) |
| : OpClassForm(id), _ideal_only(ideal_only), |
| _localNames(cmpstr, hashstr, Form::arena) { |
| _ftype = Form::OPER; |
| |
| _matrule = NULL; |
| _interface = NULL; |
| _attribs = NULL; |
| _predicate = NULL; |
| _constraint= NULL; |
| _construct = NULL; |
| _format = NULL; |
| } |
| OperandForm::~OperandForm() { |
| } |
| |
| |
| OperandForm *OperandForm::is_operand() const { |
| return (OperandForm*)this; |
| } |
| |
| bool OperandForm::ideal_only() const { |
| return _ideal_only; |
| } |
| |
| Form::InterfaceType OperandForm::interface_type(FormDict &globals) const { |
| if( _interface == NULL ) return Form::no_interface; |
| |
| return _interface->interface_type(globals); |
| } |
| |
| |
| bool OperandForm::stack_slots_only(FormDict &globals) const { |
| if( _constraint == NULL ) return false; |
| return _constraint->stack_slots_only(); |
| } |
| |
| |
| // Access op_cost attribute or return NULL. |
| const char* OperandForm::cost() { |
| for (Attribute* cur = _attribs; cur != NULL; cur = (Attribute*)cur->_next) { |
| if( strcmp(cur->_ident,AttributeForm::_op_cost) == 0 ) { |
| return cur->_val; |
| } |
| } |
| return NULL; |
| } |
| |
| // Return the number of leaves below this complex operand |
| uint OperandForm::num_leaves() const { |
| if ( ! _matrule) return 0; |
| |
| int num_leaves = _matrule->_numleaves; |
| return num_leaves; |
| } |
| |
| // Return the number of constants contained within this complex operand |
| uint OperandForm::num_consts(FormDict &globals) const { |
| if ( ! _matrule) return 0; |
| |
| // This is a recursive invocation on all operands in the matchrule |
| return _matrule->num_consts(globals); |
| } |
| |
| // Return the number of constants in match rule with specified type |
| uint OperandForm::num_consts(FormDict &globals, Form::DataType type) const { |
| if ( ! _matrule) return 0; |
| |
| // This is a recursive invocation on all operands in the matchrule |
| return _matrule->num_consts(globals, type); |
| } |
| |
| // Return the number of pointer constants contained within this complex operand |
| uint OperandForm::num_const_ptrs(FormDict &globals) const { |
| if ( ! _matrule) return 0; |
| |
| // This is a recursive invocation on all operands in the matchrule |
| return _matrule->num_const_ptrs(globals); |
| } |
| |
| uint OperandForm::num_edges(FormDict &globals) const { |
| uint edges = 0; |
| uint leaves = num_leaves(); |
| uint consts = num_consts(globals); |
| |
| // If we are matching a constant directly, there are no leaves. |
| edges = ( leaves > consts ) ? leaves - consts : 0; |
| |
| // !!!!! |
| // Special case operands that do not have a corresponding ideal node. |
| if( (edges == 0) && (consts == 0) ) { |
| if( constrained_reg_class() != NULL ) { |
| edges = 1; |
| } else { |
| if( _matrule |
| && (_matrule->_lChild == NULL) && (_matrule->_rChild == NULL) ) { |
| const Form *form = globals[_matrule->_opType]; |
| OperandForm *oper = form ? form->is_operand() : NULL; |
| if( oper ) { |
| return oper->num_edges(globals); |
| } |
| } |
| } |
| } |
| |
| return edges; |
| } |
| |
| |
| // Check if this operand is usable for cisc-spilling |
| bool OperandForm::is_cisc_reg(FormDict &globals) const { |
| const char *ideal = ideal_type(globals); |
| bool is_cisc_reg = (ideal && (ideal_to_Reg_type(ideal) != none)); |
| return is_cisc_reg; |
| } |
| |
| bool OpClassForm::is_cisc_mem(FormDict &globals) const { |
| Form::InterfaceType my_interface = interface_type(globals); |
| return (my_interface == memory_interface); |
| } |
| |
| |
| // node matches ideal 'Bool' |
| bool OperandForm::is_ideal_bool() const { |
| if( _matrule == NULL ) return false; |
| |
| return _matrule->is_ideal_bool(); |
| } |
| |
| // Require user's name for an sRegX to be stackSlotX |
| Form::DataType OperandForm::is_user_name_for_sReg() const { |
| DataType data_type = none; |
| if( _ident != NULL ) { |
| if( strcmp(_ident,"stackSlotI") == 0 ) data_type = Form::idealI; |
| else if( strcmp(_ident,"stackSlotP") == 0 ) data_type = Form::idealP; |
| else if( strcmp(_ident,"stackSlotD") == 0 ) data_type = Form::idealD; |
| else if( strcmp(_ident,"stackSlotF") == 0 ) data_type = Form::idealF; |
| else if( strcmp(_ident,"stackSlotL") == 0 ) data_type = Form::idealL; |
| } |
| assert((data_type == none) || (_matrule == NULL), "No match-rule for stackSlotX"); |
| |
| return data_type; |
| } |
| |
| |
| // Return ideal type, if there is a single ideal type for this operand |
| const char *OperandForm::ideal_type(FormDict &globals, RegisterForm *registers) const { |
| const char *type = NULL; |
| if (ideal_only()) type = _ident; |
| else if( _matrule == NULL ) { |
| // Check for condition code register |
| const char *rc_name = constrained_reg_class(); |
| // !!!!! |
| if (rc_name == NULL) return NULL; |
| // !!!!! !!!!! |
| // Check constraints on result's register class |
| if( registers ) { |
| RegClass *reg_class = registers->getRegClass(rc_name); |
| assert( reg_class != NULL, "Register class is not defined"); |
| |
| // Check for ideal type of entries in register class, all are the same type |
| reg_class->reset(); |
| RegDef *reg_def = reg_class->RegDef_iter(); |
| assert( reg_def != NULL, "No entries in register class"); |
| assert( reg_def->_idealtype != NULL, "Did not define ideal type for register"); |
| // Return substring that names the register's ideal type |
| type = reg_def->_idealtype + 3; |
| assert( *(reg_def->_idealtype + 0) == 'O', "Expect Op_ prefix"); |
| assert( *(reg_def->_idealtype + 1) == 'p', "Expect Op_ prefix"); |
| assert( *(reg_def->_idealtype + 2) == '_', "Expect Op_ prefix"); |
| } |
| } |
| else if( _matrule->_lChild == NULL && _matrule->_rChild == NULL ) { |
| // This operand matches a single type, at the top level. |
| // Check for ideal type |
| type = _matrule->_opType; |
| if( strcmp(type,"Bool") == 0 ) |
| return "Bool"; |
| // transitive lookup |
| const Form *frm = globals[type]; |
| OperandForm *op = frm->is_operand(); |
| type = op->ideal_type(globals, registers); |
| } |
| return type; |
| } |
| |
| |
| // If there is a single ideal type for this interface field, return it. |
| const char *OperandForm::interface_ideal_type(FormDict &globals, |
| const char *field) const { |
| const char *ideal_type = NULL; |
| const char *value = NULL; |
| |
| // Check if "field" is valid for this operand's interface |
| if ( ! is_interface_field(field, value) ) return ideal_type; |
| |
| // !!!!! !!!!! !!!!! |
| // If a valid field has a constant value, identify "ConI" or "ConP" or ... |
| |
| // Else, lookup type of field's replacement variable |
| |
| return ideal_type; |
| } |
| |
| |
| RegClass* OperandForm::get_RegClass() const { |
| if (_interface && !_interface->is_RegInterface()) return NULL; |
| return globalAD->get_registers()->getRegClass(constrained_reg_class()); |
| } |
| |
| |
| bool OperandForm::is_bound_register() const { |
| RegClass* reg_class = get_RegClass(); |
| if (reg_class == NULL) { |
| return false; |
| } |
| |
| const char* name = ideal_type(globalAD->globalNames()); |
| if (name == NULL) { |
| return false; |
| } |
| |
| uint size = 0; |
| if (strcmp(name, "RegFlags") == 0) size = 1; |
| if (strcmp(name, "RegI") == 0) size = 1; |
| if (strcmp(name, "RegF") == 0) size = 1; |
| if (strcmp(name, "RegD") == 0) size = 2; |
| if (strcmp(name, "RegL") == 0) size = 2; |
| if (strcmp(name, "RegN") == 0) size = 1; |
| if (strcmp(name, "RegP") == 0) size = globalAD->get_preproc_def("_LP64") ? 2 : 1; |
| if (size == 0) { |
| return false; |
| } |
| return size == reg_class->size(); |
| } |
| |
| |
| // Check if this is a valid field for this operand, |
| // Return 'true' if valid, and set the value to the string the user provided. |
| bool OperandForm::is_interface_field(const char *field, |
| const char * &value) const { |
| return false; |
| } |
| |
| |
| // Return register class name if a constraint specifies the register class. |
| const char *OperandForm::constrained_reg_class() const { |
| const char *reg_class = NULL; |
| if ( _constraint ) { |
| // !!!!! |
| Constraint *constraint = _constraint; |
| if ( strcmp(_constraint->_func,"ALLOC_IN_RC") == 0 ) { |
| reg_class = _constraint->_arg; |
| } |
| } |
| |
| return reg_class; |
| } |
| |
| |
| // Return the register class associated with 'leaf'. |
| const char *OperandForm::in_reg_class(uint leaf, FormDict &globals) { |
| const char *reg_class = NULL; // "RegMask::Empty"; |
| |
| if((_matrule == NULL) || (_matrule->is_chain_rule(globals))) { |
| reg_class = constrained_reg_class(); |
| return reg_class; |
| } |
| const char *result = NULL; |
| const char *name = NULL; |
| const char *type = NULL; |
| // iterate through all base operands |
| // until we reach the register that corresponds to "leaf" |
| // This function is not looking for an ideal type. It needs the first |
| // level user type associated with the leaf. |
| for(uint idx = 0;_matrule->base_operand(idx,globals,result,name,type);++idx) { |
| const Form *form = (_localNames[name] ? _localNames[name] : globals[result]); |
| OperandForm *oper = form ? form->is_operand() : NULL; |
| if( oper ) { |
| reg_class = oper->constrained_reg_class(); |
| if( reg_class ) { |
| reg_class = reg_class; |
| } else { |
| // ShouldNotReachHere(); |
| } |
| } else { |
| // ShouldNotReachHere(); |
| } |
| |
| // Increment our target leaf position if current leaf is not a candidate. |
| if( reg_class == NULL) ++leaf; |
| // Exit the loop with the value of reg_class when at the correct index |
| if( idx == leaf ) break; |
| // May iterate through all base operands if reg_class for 'leaf' is NULL |
| } |
| return reg_class; |
| } |
| |
| |
| // Recursive call to construct list of top-level operands. |
| // Implementation does not modify state of internal structures |
| void OperandForm::build_components() { |
| if (_matrule) _matrule->append_components(_localNames, _components); |
| |
| // Add parameters that "do not appear in match rule". |
| const char *name; |
| for (_parameters.reset(); (name = _parameters.iter()) != NULL;) { |
| OperandForm *opForm = (OperandForm*)_localNames[name]; |
| |
| if ( _components.operand_position(name) == -1 ) { |
| _components.insert(name, opForm->_ident, Component::INVALID, false); |
| } |
| } |
| |
| return; |
| } |
| |
| int OperandForm::operand_position(const char *name, int usedef) { |
| return _components.operand_position(name, usedef, this); |
| } |
| |
| |
| // Return zero-based position in component list, only counting constants; |
| // Return -1 if not in list. |
| int OperandForm::constant_position(FormDict &globals, const Component *last) { |
| // Iterate through components and count constants preceding 'constant' |
| int position = 0; |
| Component *comp; |
| _components.reset(); |
| while( (comp = _components.iter()) != NULL && (comp != last) ) { |
| // Special case for operands that take a single user-defined operand |
| // Skip the initial definition in the component list. |
| if( strcmp(comp->_name,this->_ident) == 0 ) continue; |
| |
| const char *type = comp->_type; |
| // Lookup operand form for replacement variable's type |
| const Form *form = globals[type]; |
| assert( form != NULL, "Component's type not found"); |
| OperandForm *oper = form ? form->is_operand() : NULL; |
| if( oper ) { |
| if( oper->_matrule->is_base_constant(globals) != Form::none ) { |
| ++position; |
| } |
| } |
| } |
| |
| // Check for being passed a component that was not in the list |
| if( comp != last ) position = -1; |
| |
| return position; |
| } |
| // Provide position of constant by "name" |
| int OperandForm::constant_position(FormDict &globals, const char *name) { |
| const Component *comp = _components.search(name); |
| int idx = constant_position( globals, comp ); |
| |
| return idx; |
| } |
| |
| |
| // Return zero-based position in component list, only counting constants; |
| // Return -1 if not in list. |
| int OperandForm::register_position(FormDict &globals, const char *reg_name) { |
| // Iterate through components and count registers preceding 'last' |
| uint position = 0; |
| Component *comp; |
| _components.reset(); |
| while( (comp = _components.iter()) != NULL |
| && (strcmp(comp->_name,reg_name) != 0) ) { |
| // Special case for operands that take a single user-defined operand |
| // Skip the initial definition in the component list. |
| if( strcmp(comp->_name,this->_ident) == 0 ) continue; |
| |
| const char *type = comp->_type; |
| // Lookup operand form for component's type |
| const Form *form = globals[type]; |
| assert( form != NULL, "Component's type not found"); |
| OperandForm *oper = form ? form->is_operand() : NULL; |
| if( oper ) { |
| if( oper->_matrule->is_base_register(globals) ) { |
| ++position; |
| } |
| } |
| } |
| |
| return position; |
| } |
| |
| |
| const char *OperandForm::reduce_result() const { |
| return _ident; |
| } |
| // Return the name of the operand on the right hand side of the binary match |
| // Return NULL if there is no right hand side |
| const char *OperandForm::reduce_right(FormDict &globals) const { |
| return ( _matrule ? _matrule->reduce_right(globals) : NULL ); |
| } |
| |
| // Similar for left |
| const char *OperandForm::reduce_left(FormDict &globals) const { |
| return ( _matrule ? _matrule->reduce_left(globals) : NULL ); |
| } |
| |
| |
| // --------------------------- FILE *output_routines |
| // |
| // Output code for disp_is_oop, if true. |
| void OperandForm::disp_is_oop(FILE *fp, FormDict &globals) { |
| // Check it is a memory interface with a non-user-constant disp field |
| if ( this->_interface == NULL ) return; |
| MemInterface *mem_interface = this->_interface->is_MemInterface(); |
| if ( mem_interface == NULL ) return; |
| const char *disp = mem_interface->_disp; |
| if ( *disp != '$' ) return; |
| |
| // Lookup replacement variable in operand's component list |
| const char *rep_var = disp + 1; |
| const Component *comp = this->_components.search(rep_var); |
| assert( comp != NULL, "Replacement variable not found in components"); |
| // Lookup operand form for replacement variable's type |
| const char *type = comp->_type; |
| Form *form = (Form*)globals[type]; |
| assert( form != NULL, "Replacement variable's type not found"); |
| OperandForm *op = form->is_operand(); |
| assert( op, "Memory Interface 'disp' can only emit an operand form"); |
| // Check if this is a ConP, which may require relocation |
| if ( op->is_base_constant(globals) == Form::idealP ) { |
| // Find the constant's index: _c0, _c1, _c2, ... , _cN |
| uint idx = op->constant_position( globals, rep_var); |
| fprintf(fp," virtual relocInfo::relocType disp_reloc() const {"); |
| fprintf(fp, " return _c%d->reloc();", idx); |
| fprintf(fp, " }\n"); |
| } |
| } |
| |
| // Generate code for internal and external format methods |
| // |
| // internal access to reg# node->_idx |
| // access to subsumed constant _c0, _c1, |
| void OperandForm::int_format(FILE *fp, FormDict &globals, uint index) { |
| Form::DataType dtype; |
| if (_matrule && (_matrule->is_base_register(globals) || |
| strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) { |
| // !!!!! !!!!! |
| fprintf(fp," { char reg_str[128];\n"); |
| fprintf(fp," ra->dump_register(node,reg_str);\n"); |
| fprintf(fp," st->print(\"%cs\",reg_str);\n",'%'); |
| fprintf(fp," }\n"); |
| } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) { |
| format_constant( fp, index, dtype ); |
| } else if (ideal_to_sReg_type(_ident) != Form::none) { |
| // Special format for Stack Slot Register |
| fprintf(fp," { char reg_str[128];\n"); |
| fprintf(fp," ra->dump_register(node,reg_str);\n"); |
| fprintf(fp," st->print(\"%cs\",reg_str);\n",'%'); |
| fprintf(fp," }\n"); |
| } else { |
| fprintf(fp," st->print(\"No format defined for %s\n\");\n", _ident); |
| fflush(fp); |
| fprintf(stderr,"No format defined for %s\n", _ident); |
| dump(); |
| assert( false,"Internal error:\n output_internal_operand() attempting to output other than a Register or Constant"); |
| } |
| } |
| |
| // Similar to "int_format" but for cases where data is external to operand |
| // external access to reg# node->in(idx)->_idx, |
| void OperandForm::ext_format(FILE *fp, FormDict &globals, uint index) { |
| Form::DataType dtype; |
| if (_matrule && (_matrule->is_base_register(globals) || |
| strcmp(ideal_type(globalAD->globalNames()), "RegFlags") == 0)) { |
| fprintf(fp," { char reg_str[128];\n"); |
| fprintf(fp," ra->dump_register(node->in(idx"); |
| if ( index != 0 ) fprintf(fp, "+%d",index); |
| fprintf(fp, "),reg_str);\n"); |
| fprintf(fp," st->print(\"%cs\",reg_str);\n",'%'); |
| fprintf(fp," }\n"); |
| } else if (_matrule && (dtype = _matrule->is_base_constant(globals)) != Form::none) { |
| format_constant( fp, index, dtype ); |
| } else if (ideal_to_sReg_type(_ident) != Form::none) { |
| // Special format for Stack Slot Register |
| fprintf(fp," { char reg_str[128];\n"); |
| fprintf(fp," ra->dump_register(node->in(idx"); |
| if ( index != 0 ) fprintf(fp, "+%d",index); |
| fprintf(fp, "),reg_str);\n"); |
| fprintf(fp," st->print(\"%cs\",reg_str);\n",'%'); |
| fprintf(fp," }\n"); |
| } else { |
| fprintf(fp," st->print(\"No format defined for %s\n\");\n", _ident); |
| assert( false,"Internal error:\n output_external_operand() attempting to output other than a Register or Constant"); |
| } |
| } |
| |
| void OperandForm::format_constant(FILE *fp, uint const_index, uint const_type) { |
| switch(const_type) { |
| case Form::idealI: fprintf(fp," st->print(\"#%%d\", _c%d);\n", const_index); break; |
| case Form::idealP: fprintf(fp," if (_c%d) _c%d->dump_on(st);\n", const_index, const_index); break; |
| case Form::idealNKlass: |
| case Form::idealN: fprintf(fp," if (_c%d) _c%d->dump_on(st);\n", const_index, const_index); break; |
| case Form::idealL: fprintf(fp," st->print(\"#\" INT64_FORMAT, (int64_t)_c%d);\n", const_index); break; |
| case Form::idealF: fprintf(fp," st->print(\"#%%f\", _c%d);\n", const_index); break; |
| case Form::idealD: fprintf(fp," st->print(\"#%%f\", _c%d);\n", const_index); break; |
| default: |
| assert( false, "ShouldNotReachHere()"); |
| } |
| } |
| |
| // Return the operand form corresponding to the given index, else NULL. |
| OperandForm *OperandForm::constant_operand(FormDict &globals, |
| uint index) { |
| // !!!!! |
| // Check behavior on complex operands |
| uint n_consts = num_consts(globals); |
| if( n_consts > 0 ) { |
| uint i = 0; |
| const char *type; |
| Component *comp; |
| _components.reset(); |
| if ((comp = _components.iter()) == NULL) { |
| assert(n_consts == 1, "Bad component list detected.\n"); |
| // Current operand is THE operand |
| if ( index == 0 ) { |
| return this; |
| } |
| } // end if NULL |
| else { |
| // Skip the first component, it can not be a DEF of a constant |
| do { |
| type = comp->base_type(globals); |
| // Check that "type" is a 'ConI', 'ConP', ... |
| if ( ideal_to_const_type(type) != Form::none ) { |
| // When at correct component, get corresponding Operand |
| if ( index == 0 ) { |
| return globals[comp->_type]->is_operand(); |
| } |
| // Decrement number of constants to go |
| --index; |
| } |
| } while((comp = _components.iter()) != NULL); |
| } |
| } |
| |
| // Did not find a constant for this index. |
| return NULL; |
| } |
| |
| // If this operand has a single ideal type, return its type |
| Form::DataType OperandForm::simple_type(FormDict &globals) const { |
| const char *type_name = ideal_type(globals); |
| Form::DataType type = type_name ? ideal_to_const_type( type_name ) |
| : Form::none; |
| return type; |
| } |
| |
| Form::DataType OperandForm::is_base_constant(FormDict &globals) const { |
| if ( _matrule == NULL ) return Form::none; |
| |
| return _matrule->is_base_constant(globals); |
| } |
| |
| // "true" if this operand is a simple type that is swallowed |
| bool OperandForm::swallowed(FormDict &globals) const { |
| Form::DataType type = simple_type(globals); |
| if( type != Form::none ) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| // Output code to access the value of the index'th constant |
| void OperandForm::access_constant(FILE *fp, FormDict &globals, |
| uint const_index) { |
| OperandForm *oper = constant_operand(globals, const_index); |
| assert( oper, "Index exceeds number of constants in operand"); |
| Form::DataType dtype = oper->is_base_constant(globals); |
| |
| switch(dtype) { |
| case idealI: fprintf(fp,"_c%d", const_index); break; |
| case idealP: fprintf(fp,"_c%d->get_con()",const_index); break; |
| case idealL: fprintf(fp,"_c%d", const_index); break; |
| case idealF: fprintf(fp,"_c%d", const_index); break; |
| case idealD: fprintf(fp,"_c%d", const_index); break; |
| default: |
| assert( false, "ShouldNotReachHere()"); |
| } |
| } |
| |
| |
| void OperandForm::dump() { |
| output(stderr); |
| } |
| |
| void OperandForm::output(FILE *fp) { |
| fprintf(fp,"\nOperand: %s\n", (_ident?_ident:"")); |
| if (_matrule) _matrule->dump(); |
| if (_interface) _interface->dump(); |
| if (_attribs) _attribs->dump(); |
| if (_predicate) _predicate->dump(); |
| if (_constraint) _constraint->dump(); |
| if (_construct) _construct->dump(); |
| if (_format) _format->dump(); |
| } |
| |
| //------------------------------Constraint------------------------------------- |
| Constraint::Constraint(const char *func, const char *arg) |
| : _func(func), _arg(arg) { |
| } |
| Constraint::~Constraint() { /* not owner of char* */ |
| } |
| |
| bool Constraint::stack_slots_only() const { |
| return strcmp(_func, "ALLOC_IN_RC") == 0 |
| && strcmp(_arg, "stack_slots") == 0; |
| } |
| |
| void Constraint::dump() { |
| output(stderr); |
| } |
| |
| void Constraint::output(FILE *fp) { // Write info to output files |
| assert((_func != NULL && _arg != NULL),"missing constraint function or arg"); |
| fprintf(fp,"Constraint: %s ( %s )\n", _func, _arg); |
| } |
| |
| //------------------------------Predicate-------------------------------------- |
| Predicate::Predicate(char *pr) |
| : _pred(pr) { |
| } |
| Predicate::~Predicate() { |
| } |
| |
| void Predicate::dump() { |
| output(stderr); |
| } |
| |
| void Predicate::output(FILE *fp) { |
| fprintf(fp,"Predicate"); // Write to output files |
| } |
| //------------------------------Interface-------------------------------------- |
| Interface::Interface(const char *name) : _name(name) { |
| } |
| Interface::~Interface() { |
| } |
| |
| Form::InterfaceType Interface::interface_type(FormDict &globals) const { |
| Interface *thsi = (Interface*)this; |
| if ( thsi->is_RegInterface() ) return Form::register_interface; |
| if ( thsi->is_MemInterface() ) return Form::memory_interface; |
| if ( thsi->is_ConstInterface() ) return Form::constant_interface; |
| if ( thsi->is_CondInterface() ) return Form::conditional_interface; |
| |
| return Form::no_interface; |
| } |
| |
| RegInterface *Interface::is_RegInterface() { |
| if ( strcmp(_name,"REG_INTER") != 0 ) |
| return NULL; |
| return (RegInterface*)this; |
| } |
| MemInterface *Interface::is_MemInterface() { |
| if ( strcmp(_name,"MEMORY_INTER") != 0 ) return NULL; |
| return (MemInterface*)this; |
| } |
| ConstInterface *Interface::is_ConstInterface() { |
| if ( strcmp(_name,"CONST_INTER") != 0 ) return NULL; |
| return (ConstInterface*)this; |
| } |
| CondInterface *Interface::is_CondInterface() { |
| if ( strcmp(_name,"COND_INTER") != 0 ) return NULL; |
| return (CondInterface*)this; |
| } |
| |
| |
| void Interface::dump() { |
| output(stderr); |
| } |
| |
| // Write info to output files |
| void Interface::output(FILE *fp) { |
| fprintf(fp,"Interface: %s\n", (_name ? _name : "") ); |
| } |
| |
| //------------------------------RegInterface----------------------------------- |
| RegInterface::RegInterface() : Interface("REG_INTER") { |
| } |
| RegInterface::~RegInterface() { |
| } |
| |
| void RegInterface::dump() { |
| output(stderr); |
| } |
| |
| // Write info to output files |
| void RegInterface::output(FILE *fp) { |
| Interface::output(fp); |
| } |
| |
| //------------------------------ConstInterface--------------------------------- |
| ConstInterface::ConstInterface() : Interface("CONST_INTER") { |
| } |
| ConstInterface::~ConstInterface() { |
| } |
| |
| void ConstInterface::dump() { |
| output(stderr); |
| } |
| |
| // Write info to output files |
| void ConstInterface::output(FILE *fp) { |
| Interface::output(fp); |
| } |
| |
| //------------------------------MemInterface----------------------------------- |
| MemInterface::MemInterface(char *base, char *index, char *scale, char *disp) |
| : Interface("MEMORY_INTER"), _base(base), _index(index), _scale(scale), _disp(disp) { |
| } |
| MemInterface::~MemInterface() { |
| // not owner of any character arrays |
| } |
| |
| void MemInterface::dump() { |
| output(stderr); |
| } |
| |
| // Write info to output files |
| void MemInterface::output(FILE *fp) { |
| Interface::output(fp); |
| if ( _base != NULL ) fprintf(fp," base == %s\n", _base); |
| if ( _index != NULL ) fprintf(fp," index == %s\n", _index); |
| if ( _scale != NULL ) fprintf(fp," scale == %s\n", _scale); |
| if ( _disp != NULL ) fprintf(fp," disp == %s\n", _disp); |
| // fprintf(fp,"\n"); |
| } |
| |
| //------------------------------CondInterface---------------------------------- |
| CondInterface::CondInterface(const char* equal, const char* equal_format, |
| const char* not_equal, const char* not_equal_format, |
| const char* less, const char* less_format, |
| const char* greater_equal, const char* greater_equal_format, |
| const char* less_equal, const char* less_equal_format, |
| const char* greater, const char* greater_format, |
| const char* overflow, const char* overflow_format, |
| const char* no_overflow, const char* no_overflow_format) |
| : Interface("COND_INTER"), |
| _equal(equal), _equal_format(equal_format), |
| _not_equal(not_equal), _not_equal_format(not_equal_format), |
| _less(less), _less_format(less_format), |
| _greater_equal(greater_equal), _greater_equal_format(greater_equal_format), |
| _less_equal(less_equal), _less_equal_format(less_equal_format), |
| _greater(greater), _greater_format(greater_format), |
| _overflow(overflow), _overflow_format(overflow_format), |
| _no_overflow(no_overflow), _no_overflow_format(no_overflow_format) { |
| } |
| CondInterface::~CondInterface() { |
| // not owner of any character arrays |
| } |
| |
| void CondInterface::dump() { |
| output(stderr); |
| } |
| |
| // Write info to output files |
| void CondInterface::output(FILE *fp) { |
| Interface::output(fp); |
| if ( _equal != NULL ) fprintf(fp," equal == %s\n", _equal); |
| if ( _not_equal != NULL ) fprintf(fp," not_equal == %s\n", _not_equal); |
| if ( _less != NULL ) fprintf(fp," less == %s\n", _less); |
| if ( _greater_equal != NULL ) fprintf(fp," greater_equal == %s\n", _greater_equal); |
| if ( _less_equal != NULL ) fprintf(fp," less_equal == %s\n", _less_equal); |
| if ( _greater != NULL ) fprintf(fp," greater == %s\n", _greater); |
| if ( _overflow != NULL ) fprintf(fp," overflow == %s\n", _overflow); |
| if ( _no_overflow != NULL ) fprintf(fp," no_overflow == %s\n", _no_overflow); |
| // fprintf(fp,"\n"); |
| } |
| |
| //------------------------------ConstructRule---------------------------------- |
| ConstructRule::ConstructRule(char *cnstr) |
| : _construct(cnstr) { |
| } |
| ConstructRule::~ConstructRule() { |
| } |
| |
| void ConstructRule::dump() { |
| output(stderr); |
| } |
| |
| void ConstructRule::output(FILE *fp) { |
| fprintf(fp,"\nConstruct Rule\n"); // Write to output files |
| } |
| |
| |
| //==============================Shared Forms=================================== |
| //------------------------------AttributeForm---------------------------------- |
| int AttributeForm::_insId = 0; // start counter at 0 |
| int AttributeForm::_opId = 0; // start counter at 0 |
| const char* AttributeForm::_ins_cost = "ins_cost"; // required name |
| const char* AttributeForm::_op_cost = "op_cost"; // required name |
| |
| AttributeForm::AttributeForm(char *attr, int type, char *attrdef) |
| : Form(Form::ATTR), _attrname(attr), _atype(type), _attrdef(attrdef) { |
| if (type==OP_ATTR) { |
| id = ++_opId; |
| } |
| else if (type==INS_ATTR) { |
| id = ++_insId; |
| } |
| else assert( false,""); |
| } |
| AttributeForm::~AttributeForm() { |
| } |
| |
| // Dynamic type check |
| AttributeForm *AttributeForm::is_attribute() const { |
| return (AttributeForm*)this; |
| } |
| |
| |
| // inlined // int AttributeForm::type() { return id;} |
| |
| void AttributeForm::dump() { |
| output(stderr); |
| } |
| |
| void AttributeForm::output(FILE *fp) { |
| if( _attrname && _attrdef ) { |
| fprintf(fp,"\n// AttributeForm \nstatic const int %s = %s;\n", |
| _attrname, _attrdef); |
| } |
| else { |
| fprintf(fp,"\n// AttributeForm missing name %s or definition %s\n", |
| (_attrname?_attrname:""), (_attrdef?_attrdef:"") ); |
| } |
| } |
| |
| //------------------------------Component-------------------------------------- |
| Component::Component(const char *name, const char *type, int usedef) |
| : _name(name), _type(type), _usedef(usedef) { |
| _ftype = Form::COMP; |
| } |
| Component::~Component() { |
| } |
| |
| // True if this component is equal to the parameter. |
| bool Component::is(int use_def_kill_enum) const { |
| return (_usedef == use_def_kill_enum ? true : false); |
| } |
| // True if this component is used/def'd/kill'd as the parameter suggests. |
| bool Component::isa(int use_def_kill_enum) const { |
| return (_usedef & use_def_kill_enum) == use_def_kill_enum; |
| } |
| |
| // Extend this component with additional use/def/kill behavior |
| int Component::promote_use_def_info(int new_use_def) { |
| _usedef |= new_use_def; |
| |
| return _usedef; |
| } |
| |
| // Check the base type of this component, if it has one |
| const char *Component::base_type(FormDict &globals) { |
| const Form *frm = globals[_type]; |
| if (frm == NULL) return NULL; |
| OperandForm *op = frm->is_operand(); |
| if (op == NULL) return NULL; |
| if (op->ideal_only()) return op->_ident; |
| return (char *)op->ideal_type(globals); |
| } |
| |
| void Component::dump() { |
| output(stderr); |
| } |
| |
| void Component::output(FILE *fp) { |
| fprintf(fp,"Component:"); // Write to output files |
| fprintf(fp, " name = %s", _name); |
| fprintf(fp, ", type = %s", _type); |
| assert(_usedef != 0, "unknown effect"); |
| fprintf(fp, ", use/def = %s\n", getUsedefName()); |
| } |
| |
| |
| //------------------------------ComponentList--------------------------------- |
| ComponentList::ComponentList() : NameList(), _matchcnt(0) { |
| } |
| ComponentList::~ComponentList() { |
| // // This list may not own its elements if copied via assignment |
| // Component *component; |
| // for (reset(); (component = iter()) != NULL;) { |
| // delete component; |
| // } |
| } |
| |
| void ComponentList::insert(Component *component, bool mflag) { |
| NameList::addName((char *)component); |
| if(mflag) _matchcnt++; |
| } |
| void ComponentList::insert(const char *name, const char *opType, int usedef, |
| bool mflag) { |
| Component * component = new Component(name, opType, usedef); |
| insert(component, mflag); |
| } |
| Component *ComponentList::current() { return (Component*)NameList::current(); } |
| Component *ComponentList::iter() { return (Component*)NameList::iter(); } |
| Component *ComponentList::match_iter() { |
| if(_iter < _matchcnt) return (Component*)NameList::iter(); |
| return NULL; |
| } |
| Component *ComponentList::post_match_iter() { |
| Component *comp = iter(); |
| // At end of list? |
| if ( comp == NULL ) { |
| return comp; |
| } |
| // In post-match components? |
| if (_iter > match_count()-1) { |
| return comp; |
| } |
| |
| return post_match_iter(); |
| } |
| |
| void ComponentList::reset() { NameList::reset(); } |
| int ComponentList::count() { return NameList::count(); } |
| |
| Component *ComponentList::operator[](int position) { |
| // Shortcut complete iteration if there are not enough entries |
| if (position >= count()) return NULL; |
| |
| int index = 0; |
| Component *component = NULL; |
| for (reset(); (component = iter()) != NULL;) { |
| if (index == position) { |
| return component; |
| } |
| ++index; |
| } |
| |
| return NULL; |
| } |
| |
| const Component *ComponentList::search(const char *name) { |
| PreserveIter pi(this); |
| reset(); |
| for( Component *comp = NULL; ((comp = iter()) != NULL); ) { |
| if( strcmp(comp->_name,name) == 0 ) return comp; |
| } |
| |
| return NULL; |
| } |
| |
| // Return number of USEs + number of DEFs |
| // When there are no components, or the first component is a USE, |
| // then we add '1' to hold a space for the 'result' operand. |
| int ComponentList::num_operands() { |
| PreserveIter pi(this); |
| uint count = 1; // result operand |
| uint position = 0; |
| |
| Component *component = NULL; |
| for( reset(); (component = iter()) != NULL; ++position ) { |
| if( component->isa(Component::USE) || |
| ( position == 0 && (! component->isa(Component::DEF))) ) { |
| ++count; |
| } |
| } |
| |
| return count; |
| } |
| |
| // Return zero-based position of operand 'name' in list; -1 if not in list. |
| // if parameter 'usedef' is ::USE, it will match USE, USE_DEF, ... |
| int ComponentList::operand_position(const char *name, int usedef, Form *fm) { |
| PreserveIter pi(this); |
| int position = 0; |
| int num_opnds = num_operands(); |
| Component *component; |
| Component* preceding_non_use = NULL; |
| Component* first_def = NULL; |
| for (reset(); (component = iter()) != NULL; ++position) { |
| // When the first component is not a DEF, |
| // leave space for the result operand! |
| if ( position==0 && (! component->isa(Component::DEF)) ) { |
| ++position; |
| ++num_opnds; |
| } |
| if (strcmp(name, component->_name)==0 && (component->isa(usedef))) { |
| // When the first entry in the component list is a DEF and a USE |
| // Treat them as being separate, a DEF first, then a USE |
| if( position==0 |
| && usedef==Component::USE && component->isa(Component::DEF) ) { |
| assert(position+1 < num_opnds, "advertised index in bounds"); |
| return position+1; |
| } else { |
| if( preceding_non_use && strcmp(component->_name, preceding_non_use->_name) ) { |
| fprintf(stderr, "the name '%s(%s)' should not precede the name '%s(%s)'", |
| preceding_non_use->_name, preceding_non_use->getUsedefName(), |
| name, component->getUsedefName()); |
| if (fm && fm->is_instruction()) fprintf(stderr, "in form '%s'", fm->is_instruction()->_ident); |
| if (fm && fm->is_operand()) fprintf(stderr, "in form '%s'", fm->is_operand()->_ident); |
| fprintf(stderr, "\n"); |
| } |
| if( position >= num_opnds ) { |
| fprintf(stderr, "the name '%s' is too late in its name list", name); |
| if (fm && fm->is_instruction()) fprintf(stderr, "in form '%s'", fm->is_instruction()->_ident); |
| if (fm && fm->is_operand()) fprintf(stderr, "in form '%s'", fm->is_operand()->_ident); |
| fprintf(stderr, "\n"); |
| } |
| assert(position < num_opnds, "advertised index in bounds"); |
| return position; |
| } |
| } |
| if( component->isa(Component::DEF) |
| && component->isa(Component::USE) ) { |
| ++position; |
| if( position != 1 ) --position; // only use two slots for the 1st USE_DEF |
| } |
| if( component->isa(Component::DEF) && !first_def ) { |
| first_def = component; |
| } |
| if( !component->isa(Component::USE) && component != first_def ) { |
| preceding_non_use = component; |
| } else if( preceding_non_use && !strcmp(component->_name, preceding_non_use->_name) ) { |
| preceding_non_use = NULL; |
| } |
| } |
| return Not_in_list; |
| } |
| |
| // Find position for this name, regardless of use/def information |
| int ComponentList::operand_position(const char *name) { |
| PreserveIter pi(this); |
| int position = 0; |
| Component *component; |
| for (reset(); (component = iter()) != NULL; ++position) { |
| // When the first component is not a DEF, |
| // leave space for the result operand! |
| if ( position==0 && (! component->isa(Component::DEF)) ) { |
| ++position; |
| } |
| if (strcmp(name, component->_name)==0) { |
| return position; |
| } |
| if( component->isa(Component::DEF) |
| && component->isa(Component::USE) ) { |
| ++position; |
| if( position != 1 ) --position; // only use two slots for the 1st USE_DEF |
| } |
| } |
| return Not_in_list; |
| } |
| |
| int ComponentList::operand_position_format(const char *name, Form *fm) { |
| PreserveIter pi(this); |
| int first_position = operand_position(name); |
| int use_position = operand_position(name, Component::USE, fm); |
| |
| return ((first_position < use_position) ? use_position : first_position); |
| } |
| |
| int ComponentList::label_position() { |
| PreserveIter pi(this); |
| int position = 0; |
| reset(); |
| for( Component *comp; (comp = iter()) != NULL; ++position) { |
| // When the first component is not a DEF, |
| // leave space for the result operand! |
| if ( position==0 && (! comp->isa(Component::DEF)) ) { |
| ++position; |
| } |
| if (strcmp(comp->_type, "label")==0) { |
| return position; |
| } |
| if( comp->isa(Component::DEF) |
| && comp->isa(Component::USE) ) { |
| ++position; |
| if( position != 1 ) --position; // only use two slots for the 1st USE_DEF |
| } |
| } |
| |
| return -1; |
| } |
| |
| int ComponentList::method_position() { |
| PreserveIter pi(this); |
| int position = 0; |
| reset(); |
| for( Component *comp; (comp = iter()) != NULL; ++position) { |
| // When the first component is not a DEF, |
| // leave space for the result operand! |
| if ( position==0 && (! comp->isa(Component::DEF)) ) { |
| ++position; |
| } |
| if (strcmp(comp->_type, "method")==0) { |
| return position; |
| } |
| if( comp->isa(Component::DEF) |
| && comp->isa(Component::USE) ) { |
| ++position; |
| if( position != 1 ) --position; // only use two slots for the 1st USE_DEF |
| } |
| } |
| |
| return -1; |
| } |
| |
| void ComponentList::dump() { output(stderr); } |
| |
| void ComponentList::output(FILE *fp) { |
| PreserveIter pi(this); |
| fprintf(fp, "\n"); |
| Component *component; |
| for (reset(); (component = iter()) != NULL;) { |
| component->output(fp); |
| } |
| fprintf(fp, "\n"); |
| } |
| |
| //------------------------------MatchNode-------------------------------------- |
| MatchNode::MatchNode(ArchDesc &ad, const char *result, const char *mexpr, |
| const char *opType, MatchNode *lChild, MatchNode *rChild) |
| : _AD(ad), _result(result), _name(mexpr), _opType(opType), |
| _lChild(lChild), _rChild(rChild), _internalop(0), _numleaves(0), |
| _commutative_id(0) { |
| _numleaves = (lChild ? lChild->_numleaves : 0) |
| + (rChild ? rChild->_numleaves : 0); |
| } |
| |
| MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode) |
| : _AD(ad), _result(mnode._result), _name(mnode._name), |
| _opType(mnode._opType), _lChild(mnode._lChild), _rChild(mnode._rChild), |
| _internalop(0), _numleaves(mnode._numleaves), |
| _commutative_id(mnode._commutative_id) { |
| } |
| |
| MatchNode::MatchNode(ArchDesc &ad, MatchNode& mnode, int clone) |
| : _AD(ad), _result(mnode._result), _name(mnode._name), |
| _opType(mnode._opType), |
| _internalop(0), _numleaves(mnode._numleaves), |
| _commutative_id(mnode._commutative_id) { |
| if (mnode._lChild) { |
| _lChild = new MatchNode(ad, *mnode._lChild, clone); |
| } else { |
| _lChild = NULL; |
| } |
| if (mnode._rChild) { |
| _rChild = new MatchNode(ad, *mnode._rChild, clone); |
| } else { |
| _rChild = NULL; |
| } |
| } |
| |
| MatchNode::~MatchNode() { |
| // // This node may not own its children if copied via assignment |
| // if( _lChild ) delete _lChild; |
| // if( _rChild ) delete _rChild; |
| } |
| |
| bool MatchNode::find_type(const char *type, int &position) const { |
| if ( (_lChild != NULL) && (_lChild->find_type(type, position)) ) return true; |
| if ( (_rChild != NULL) && (_rChild->find_type(type, position)) ) return true; |
| |
| if (strcmp(type,_opType)==0) { |
| return true; |
| } else { |
| ++position; |
| } |
| return false; |
| } |
| |
| // Recursive call collecting info on top-level operands, not transitive. |
| // Implementation does not modify state of internal structures. |
| void MatchNode::append_components(FormDict& locals, ComponentList& components, |
| bool def_flag) const { |
| int usedef = def_flag ? Component::DEF : Component::USE; |
| FormDict &globals = _AD.globalNames(); |
| |
| assert (_name != NULL, "MatchNode::build_components encountered empty node\n"); |
| // Base case |
| if (_lChild==NULL && _rChild==NULL) { |
| // If _opType is not an operation, do not build a component for it ##### |
| const Form *f = globals[_opType]; |
| if( f != NULL ) { |
| // Add non-ideals that are operands, operand-classes, |
| if( ! f->ideal_only() |
| && (f->is_opclass() || f->is_operand()) ) { |
| components.insert(_name, _opType, usedef, true); |
| } |
| } |
| return; |
| } |
| // Promote results of "Set" to DEF |
| bool tmpdef_flag = (!strcmp(_opType, "Set")) ? true : false; |
| if (_lChild) _lChild->append_components(locals, components, tmpdef_flag); |
| tmpdef_flag = false; // only applies to component immediately following 'Set' |
| if (_rChild) _rChild->append_components(locals, components, tmpdef_flag); |
| } |
| |
| // Find the n'th base-operand in the match node, |
| // recursively investigates match rules of user-defined operands. |
| // |
| // Implementation does not modify state of internal structures since they |
| // can be shared. |
| bool MatchNode::base_operand(uint &position, FormDict &globals, |
| const char * &result, const char * &name, |
| const char * &opType) const { |
| assert (_name != NULL, "MatchNode::base_operand encountered empty node\n"); |
| // Base case |
| if (_lChild==NULL && _rChild==NULL) { |
| // Check for special case: "Universe", "label" |
| if (strcmp(_opType,"Universe") == 0 || strcmp(_opType,"label")==0 ) { |
| if (position == 0) { |
| result = _result; |
| name = _name; |
| opType = _opType; |
| return 1; |
| } else { |
| -- position; |
| return 0; |
| } |
| } |
| |
| const Form *form = globals[_opType]; |
| MatchNode *matchNode = NULL; |
| // Check for user-defined type |
| if (form) { |
| // User operand or instruction? |
| OperandForm *opForm = form->is_operand(); |
| InstructForm *inForm = form->is_instruction(); |
| if ( opForm ) { |
| matchNode = (MatchNode*)opForm->_matrule; |
| } else if ( inForm ) { |
| matchNode = (MatchNode*)inForm->_matrule; |
| } |
| } |
| // if this is user-defined, recurse on match rule |
| // User-defined operand and instruction forms have a match-rule. |
| if (matchNode) { |
| return (matchNode->base_operand(position,globals,result,name,opType)); |
| } else { |
| // Either not a form, or a system-defined form (no match rule). |
| if (position==0) { |
| result = _result; |
| name = _name; |
| opType = _opType; |
| return 1; |
| } else { |
| --position; |
| return 0; |
| } |
| } |
| |
| } else { |
| // Examine the left child and right child as well |
| if (_lChild) { |
| if (_lChild->base_operand(position, globals, result, name, opType)) |
| return 1; |
| } |
| |
| if (_rChild) { |
| if (_rChild->base_operand(position, globals, result, name, opType)) |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| // Recursive call on all operands' match rules in my match rule. |
| uint MatchNode::num_consts(FormDict &globals) const { |
| uint index = 0; |
| uint num_consts = 0; |
| const char *result; |
| const char *name; |
| const char *opType; |
| |
| for (uint position = index; |
| base_operand(position,globals,result,name,opType); position = index) { |
| ++index; |
| if( ideal_to_const_type(opType) ) num_consts++; |
| } |
| |
| return num_consts; |
| } |
| |
| // Recursive call on all operands' match rules in my match rule. |
| // Constants in match rule subtree with specified type |
| uint MatchNode::num_consts(FormDict &globals, Form::DataType type) const { |
| uint index = 0; |
| uint num_consts = 0; |
| const char *result; |
| const char *name; |
| const char *opType; |
| |
| for (uint position = index; |
| base_operand(position,globals,result,name,opType); position = index) { |
| ++index; |
| if( ideal_to_const_type(opType) == type ) num_consts++; |
| } |
| |
| return num_consts; |
| } |
| |
| // Recursive call on all operands' match rules in my match rule. |
| uint MatchNode::num_const_ptrs(FormDict &globals) const { |
| return num_consts( globals, Form::idealP ); |
| } |
| |
| bool MatchNode::sets_result() const { |
| return ( (strcmp(_name,"Set") == 0) ? true : false ); |
| } |
| |
| const char *MatchNode::reduce_right(FormDict &globals) const { |
| // If there is no right reduction, return NULL. |
| const char *rightStr = NULL; |
| |
| // If we are a "Set", start from the right child. |
| const MatchNode *const mnode = sets_result() ? |
| (const MatchNode *)this->_rChild : |
| (const MatchNode *)this; |
| |
| // If our right child exists, it is the right reduction |
| if ( mnode->_rChild ) { |
| rightStr = mnode->_rChild->_internalop ? mnode->_rChild->_internalop |
| : mnode->_rChild->_opType; |
| } |
| // Else, May be simple chain rule: (Set dst operand_form), rightStr=NULL; |
| return rightStr; |
| } |
| |
| const char *MatchNode::reduce_left(FormDict &globals) const { |
| // If there is no left reduction, return NULL. |
| const char *leftStr = NULL; |
| |
| // If we are a "Set", start from the right child. |
| const MatchNode *const mnode = sets_result() ? |
| (const MatchNode *)this->_rChild : |
| (const MatchNode *)this; |
| |
| // If our left child exists, it is the left reduction |
| if ( mnode->_lChild ) { |
| leftStr = mnode->_lChild->_internalop ? mnode->_lChild->_internalop |
| : mnode->_lChild->_opType; |
| } else { |
| // May be simple chain rule: (Set dst operand_form_source) |
| if ( sets_result() ) { |
| OperandForm *oper = globals[mnode->_opType]->is_operand(); |
| if( oper ) { |
| leftStr = mnode->_opType; |
| } |
| } |
| } |
| return leftStr; |
| } |
| |
| //------------------------------count_instr_names------------------------------ |
| // Count occurrences of operands names in the leaves of the instruction |
| // match rule. |
| void MatchNode::count_instr_names( Dict &names ) { |
| if( this == NULL ) return; |
| if( _lChild ) _lChild->count_instr_names(names); |
| if( _rChild ) _rChild->count_instr_names(names); |
| if( !_lChild && !_rChild ) { |
| uintptr_t cnt = (uintptr_t)names[_name]; |
| cnt++; // One more name found |
| names.Insert(_name,(void*)cnt); |
| } |
| } |
| |
| //------------------------------build_instr_pred------------------------------- |
| // Build a path to 'name' in buf. Actually only build if cnt is zero, so we |
| // can skip some leading instances of 'name'. |
| int MatchNode::build_instr_pred( char *buf, const char *name, int cnt ) { |
| if( _lChild ) { |
| if( !cnt ) strcpy( buf, "_kids[0]->" ); |
| cnt = _lChild->build_instr_pred( buf+strlen(buf), name, cnt ); |
| if( cnt < 0 ) return cnt; // Found it, all done |
| } |
| if( _rChild ) { |
| if( !cnt ) strcpy( buf, "_kids[1]->" ); |
| cnt = _rChild->build_instr_pred( buf+strlen(buf), name, cnt ); |
| if( cnt < 0 ) return cnt; // Found it, all done |
| } |
| if( !_lChild && !_rChild ) { // Found a leaf |
| // Wrong name? Give up... |
| if( strcmp(name,_name) ) return cnt; |
| if( !cnt ) strcpy(buf,"_leaf"); |
| return cnt-1; |
| } |
| return cnt; |
| } |
| |
| |
| //------------------------------build_internalop------------------------------- |
| // Build string representation of subtree |
| void MatchNode::build_internalop( ) { |
| char *iop, *subtree; |
| const char *lstr, *rstr; |
| // Build string representation of subtree |
| // Operation lchildType rchildType |
| int len = (int)strlen(_opType) + 4; |
| lstr = (_lChild) ? ((_lChild->_internalop) ? |
| _lChild->_internalop : _lChild->_opType) : ""; |
| rstr = (_rChild) ? ((_rChild->_internalop) ? |
| _rChild->_internalop : _rChild->_opType) : ""; |
| len += (int)strlen(lstr) + (int)strlen(rstr); |
| subtree = (char *)malloc(len); |
| sprintf(subtree,"_%s_%s_%s", _opType, lstr, rstr); |
| // Hash the subtree string in _internalOps; if a name exists, use it |
| iop = (char *)_AD._internalOps[subtree]; |
| // Else create a unique name, and add it to the hash table |
| if (iop == NULL) { |
| iop = subtree; |
| _AD._internalOps.Insert(subtree, iop); |
| _AD._internalOpNames.addName(iop); |
| _AD._internalMatch.Insert(iop, this); |
| } |
| // Add the internal operand name to the MatchNode |
| _internalop = iop; |
| _result = iop; |
| } |
| |
| |
| void MatchNode::dump() { |
| output(stderr); |
| } |
| |
| void MatchNode::output(FILE *fp) { |
| if (_lChild==0 && _rChild==0) { |
| fprintf(fp," %s",_name); // operand |
| } |
| else { |
| fprintf(fp," (%s ",_name); // " (opcodeName " |
| if(_lChild) _lChild->output(fp); // left operand |
| if(_rChild) _rChild->output(fp); // right operand |
| fprintf(fp,")"); // ")" |
| } |
| } |
| |
| int MatchNode::needs_ideal_memory_edge(FormDict &globals) const { |
| static const char *needs_ideal_memory_list[] = { |
| "StoreI","StoreL","StoreP","StoreN","StoreNKlass","StoreD","StoreF" , |
| "StoreB","StoreC","Store" ,"StoreFP", |
| "LoadI", "LoadL", "LoadP" ,"LoadN", "LoadD" ,"LoadF" , |
| "LoadB" , "LoadUB", "LoadUS" ,"LoadS" ,"Load" , |
| "StoreVector", "LoadVector", |
| "LoadRange", "LoadKlass", "LoadNKlass", "LoadL_unaligned", "LoadD_unaligned", |
| "LoadPLocked", |
| "StorePConditional", "StoreIConditional", "StoreLConditional", |
| "CompareAndSwapB", "CompareAndSwapS", "CompareAndSwapI", "CompareAndSwapL", "CompareAndSwapP", "CompareAndSwapN", |
| "WeakCompareAndSwapB", "WeakCompareAndSwapS", "WeakCompareAndSwapI", "WeakCompareAndSwapL", "WeakCompareAndSwapP", "WeakCompareAndSwapN", |
| "CompareAndExchangeB", "CompareAndExchangeS", "CompareAndExchangeI", "CompareAndExchangeL", "CompareAndExchangeP", "CompareAndExchangeN", |
| "StoreCM", |
| "ClearArray", |
| "GetAndSetB", "GetAndSetS", "GetAndAddI", "GetAndSetI", "GetAndSetP", |
| "GetAndAddB", "GetAndAddS", "GetAndAddL", "GetAndSetL", "GetAndSetN", |
| }; |
| int cnt = sizeof(needs_ideal_memory_list)/sizeof(char*); |
| if( strcmp(_opType,"PrefetchAllocation")==0 ) |
| return 1; |
| if( _lChild ) { |
| const char *opType = _lChild->_opType; |
| for( int i=0; i<cnt; i++ ) |
| if( strcmp(opType,needs_ideal_memory_list[i]) == 0 ) |
| return 1; |
| if( _lChild->needs_ideal_memory_edge(globals) ) |
| return 1; |
| } |
| if( _rChild ) { |
| const char *opType = _rChild->_opType; |
| for( int i=0; i<cnt; i++ ) |
| if( strcmp(opType,needs_ideal_memory_list[i]) == 0 ) |
| return 1; |
| if( _rChild->needs_ideal_memory_edge(globals) ) |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| // TRUE if defines a derived oop, and so needs a base oop edge present |
| // post-matching. |
| int MatchNode::needs_base_oop_edge() const { |
| if( !strcmp(_opType,"AddP") ) return 1; |
| if( strcmp(_opType,"Set") ) return 0; |
| return !strcmp(_rChild->_opType,"AddP"); |
| } |
| |
| int InstructForm::needs_base_oop_edge(FormDict &globals) const { |
| if( is_simple_chain_rule(globals) ) { |
| const char *src = _matrule->_rChild->_opType; |
| OperandForm *src_op = globals[src]->is_operand(); |
| assert( src_op, "Not operand class of chain rule" ); |
| return src_op->_matrule ? src_op->_matrule->needs_base_oop_edge() : 0; |
| } // Else check instruction |
| |
| return _matrule ? _matrule->needs_base_oop_edge() : 0; |
| } |
| |
| |
| //-------------------------cisc spilling methods------------------------------- |
| // helper routines and methods for detecting cisc-spilling instructions |
| //-------------------------cisc_spill_merge------------------------------------ |
| int MatchNode::cisc_spill_merge(int left_spillable, int right_spillable) { |
| int cisc_spillable = Maybe_cisc_spillable; |
| |
| // Combine results of left and right checks |
| if( (left_spillable == Maybe_cisc_spillable) && (right_spillable == Maybe_cisc_spillable) ) { |
| // neither side is spillable, nor prevents cisc spilling |
| cisc_spillable = Maybe_cisc_spillable; |
| } |
| else if( (left_spillable == Maybe_cisc_spillable) && (right_spillable > Maybe_cisc_spillable) ) { |
| // right side is spillable |
| cisc_spillable = right_spillable; |
| } |
| else if( (right_spillable == Maybe_cisc_spillable) && (left_spillable > Maybe_cisc_spillable) ) { |
| // left side is spillable |
| cisc_spillable = left_spillable; |
| } |
| else if( (left_spillable == Not_cisc_spillable) || (right_spillable == Not_cisc_spillable) ) { |
| // left or right prevents cisc spilling this instruction |
| cisc_spillable = Not_cisc_spillable; |
| } |
| else { |
| // Only allow one to spill |
| cisc_spillable = Not_cisc_spillable; |
| } |
| |
| return cisc_spillable; |
| } |
| |
| //-------------------------root_ops_match-------------------------------------- |
| bool static root_ops_match(FormDict &globals, const char *op1, const char *op2) { |
| // Base Case: check that the current operands/operations match |
| assert( op1, "Must have op's name"); |
| assert( op2, "Must have op's name"); |
| const Form *form1 = globals[op1]; |
| const Form *form2 = globals[op2]; |
| |
| return (form1 == form2); |
| } |
| |
| //-------------------------cisc_spill_match_node------------------------------- |
| // Recursively check two MatchRules for legal conversion via cisc-spilling |
| int MatchNode::cisc_spill_match(FormDict& globals, RegisterForm* registers, MatchNode* mRule2, const char* &operand, const char* ®_type) { |
| int cisc_spillable = Maybe_cisc_spillable; |
| int left_spillable = Maybe_cisc_spillable; |
| int right_spillable = Maybe_cisc_spillable; |
| |
| // Check that each has same number of operands at this level |
| if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) |
| return Not_cisc_spillable; |
| |
| // Base Case: check that the current operands/operations match |
| // or are CISC spillable |
| assert( _opType, "Must have _opType"); |
| assert( mRule2->_opType, "Must have _opType"); |
| const Form *form = globals[_opType]; |
| const Form *form2 = globals[mRule2->_opType]; |
| if( form == form2 ) { |
| cisc_spillable = Maybe_cisc_spillable; |
| } else { |
| const InstructForm *form2_inst = form2 ? form2->is_instruction() : NULL; |
| const char *name_left = mRule2->_lChild ? mRule2->_lChild->_opType : NULL; |
| const char *name_right = mRule2->_rChild ? mRule2->_rChild->_opType : NULL; |
| DataType data_type = Form::none; |
| if (form->is_operand()) { |
| // Make sure the loadX matches the type of the reg |
| data_type = form->ideal_to_Reg_type(form->is_operand()->ideal_type(globals)); |
| } |
| // Detect reg vs (loadX memory) |
| if( form->is_cisc_reg(globals) |
| && form2_inst |
| && data_type != Form::none |
| && (is_load_from_memory(mRule2->_opType) == data_type) // reg vs. (load memory) |
| && (name_left != NULL) // NOT (load) |
| && (name_right == NULL) ) { // NOT (load memory foo) |
| const Form *form2_left = name_left ? globals[name_left] : NULL; |
| if( form2_left && form2_left->is_cisc_mem(globals) ) { |
| cisc_spillable = Is_cisc_spillable; |
| operand = _name; |
| reg_type = _result; |
| return Is_cisc_spillable; |
| } else { |
| cisc_spillable = Not_cisc_spillable; |
| } |
| } |
| // Detect reg vs memory |
| else if( form->is_cisc_reg(globals) && form2->is_cisc_mem(globals) ) { |
| cisc_spillable = Is_cisc_spillable; |
| operand = _name; |
| reg_type = _result; |
| return Is_cisc_spillable; |
| } else { |
| cisc_spillable = Not_cisc_spillable; |
| } |
| } |
| |
| // If cisc is still possible, check rest of tree |
| if( cisc_spillable == Maybe_cisc_spillable ) { |
| // Check that each has same number of operands at this level |
| if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable; |
| |
| // Check left operands |
| if( (_lChild == NULL) && (mRule2->_lChild == NULL) ) { |
| left_spillable = Maybe_cisc_spillable; |
| } else if (_lChild != NULL) { |
| left_spillable = _lChild->cisc_spill_match(globals, registers, mRule2->_lChild, operand, reg_type); |
| } |
| |
| // Check right operands |
| if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) { |
| right_spillable = Maybe_cisc_spillable; |
| } else if (_rChild != NULL) { |
| right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type); |
| } |
| |
| // Combine results of left and right checks |
| cisc_spillable = cisc_spill_merge(left_spillable, right_spillable); |
| } |
| |
| return cisc_spillable; |
| } |
| |
| //---------------------------cisc_spill_match_rule------------------------------ |
| // Recursively check two MatchRules for legal conversion via cisc-spilling |
| // This method handles the root of Match tree, |
| // general recursive checks done in MatchNode |
| int MatchRule::matchrule_cisc_spill_match(FormDict& globals, RegisterForm* registers, |
| MatchRule* mRule2, const char* &operand, |
| const char* ®_type) { |
| int cisc_spillable = Maybe_cisc_spillable; |
| int left_spillable = Maybe_cisc_spillable; |
| int right_spillable = Maybe_cisc_spillable; |
| |
| // Check that each sets a result |
| if( !(sets_result() && mRule2->sets_result()) ) return Not_cisc_spillable; |
| // Check that each has same number of operands at this level |
| if( (_lChild && !(mRule2->_lChild)) || (_rChild && !(mRule2->_rChild)) ) return Not_cisc_spillable; |
| |
| // Check left operands: at root, must be target of 'Set' |
| if( (_lChild == NULL) || (mRule2->_lChild == NULL) ) { |
| left_spillable = Not_cisc_spillable; |
| } else { |
| // Do not support cisc-spilling instruction's target location |
| if( root_ops_match(globals, _lChild->_opType, mRule2->_lChild->_opType) ) { |
| left_spillable = Maybe_cisc_spillable; |
| } else { |
| left_spillable = Not_cisc_spillable; |
| } |
| } |
| |
| // Check right operands: recursive walk to identify reg->mem operand |
| if( (_rChild == NULL) && (mRule2->_rChild == NULL) ) { |
| right_spillable = Maybe_cisc_spillable; |
| } else { |
| right_spillable = _rChild->cisc_spill_match(globals, registers, mRule2->_rChild, operand, reg_type); |
| } |
| |
| // Combine results of left and right checks |
| cisc_spillable = cisc_spill_merge(left_spillable, right_spillable); |
| |
| return cisc_spillable; |
| } |
| |
| //----------------------------- equivalent ------------------------------------ |
| // Recursively check to see if two match rules are equivalent. |
| // This rule handles the root. |
| bool MatchRule::equivalent(FormDict &globals, MatchNode *mRule2) { |
| // Check that each sets a result |
| if (sets_result() != mRule2->sets_result()) { |
| return false; |
| } |
| |
| // Check that the current operands/operations match |
| assert( _opType, "Must have _opType"); |
| assert( mRule2->_opType, "Must have _opType"); |
| const Form *form = globals[_opType]; |
| const Form *form2 = globals[mRule2->_opType]; |
| if( form != form2 ) { |
| return false; |
| } |
| |
| if (_lChild ) { |
| if( !_lChild->equivalent(globals, mRule2->_lChild) ) |
| return false; |
| } else if (mRule2->_lChild) { |
| return false; // I have NULL left child, mRule2 has non-NULL left child. |
| } |
| |
| if (_rChild ) { |
| if( !_rChild->equivalent(globals, mRule2->_rChild) ) |
| return false; |
| } else if (mRule2->_rChild) { |
| return false; // I have NULL right child, mRule2 has non-NULL right child. |
| } |
| |
| // We've made it through the gauntlet. |
| return true; |
| } |
| |
| //----------------------------- equivalent ------------------------------------ |
| // Recursively check to see if two match rules are equivalent. |
| // This rule handles the operands. |
| bool MatchNode::equivalent(FormDict &globals, MatchNode *mNode2) { |
| if( !mNode2 ) |
| return false; |
| |
| // Check that the current operands/operations match |
| assert( _opType, "Must have _opType"); |
| assert( mNode2->_opType, "Must have _opType"); |
| const Form *form = globals[_opType]; |
| const Form *form2 = globals[mNode2->_opType]; |
| if( form != form2 ) { |
| return false; |
| } |
| |
| // Check that their children also match |
| if (_lChild ) { |
| if( !_lChild->equivalent(globals, mNode2->_lChild) ) |
| return false; |
| } else if (mNode2->_lChild) { |
| return false; // I have NULL left child, mNode2 has non-NULL left child. |
| } |
| |
| if (_rChild ) { |
| if( !_rChild->equivalent(globals, mNode2->_rChild) ) |
| return false; |
| } else if (mNode2->_rChild) { |
| return false; // I have NULL right child, mNode2 has non-NULL right child. |
| } |
| |
| // We've made it through the gauntlet. |
| return true; |
| } |
| |
| //-------------------------- has_commutative_op ------------------------------- |
| // Recursively check for commutative operations with subtree operands |
| // which could be swapped. |
| void MatchNode::count_commutative_op(int& count) { |
| static const char *commut_op_list[] = { |
| "AddI","AddL","AddF","AddD", |
| "AddVB","AddVS","AddVI","AddVL","AddVF","AddVD", |
| "AndI","AndL", |
| "AndV", |
| "MaxI","MinI", |
| "MulI","MulL","MulF","MulD", |
| "MulVS","MulVI","MulVL","MulVF","MulVD", |
| "OrI","OrL", |
| "OrV", |
| "XorI","XorL", |
| "XorV" |
| }; |
| int cnt = sizeof(commut_op_list)/sizeof(char*); |
| |
| if( _lChild && _rChild && (_lChild->_lChild || _rChild->_lChild) ) { |
| // Don't swap if right operand is an immediate constant. |
| bool is_const = false; |
| if( _rChild->_lChild == NULL && _rChild->_rChild == NULL ) { |
| FormDict &globals = _AD.globalNames(); |
| const Form *form = globals[_rChild->_opType]; |
| if ( form ) { |
| OperandForm *oper = form->is_operand(); |
| if( oper && oper->interface_type(globals) == Form::constant_interface ) |
| is_const = true; |
| } |
| } |
| if( !is_const ) { |
| for( int i=0; i<cnt; i++ ) { |
| if( strcmp(_opType, commut_op_list[i]) == 0 ) { |
| count++; |
| _commutative_id = count; // id should be > 0 |
| break; |
| } |
| } |
| } |
| } |
| if( _lChild ) |
| _lChild->count_commutative_op(count); |
| if( _rChild ) |
| _rChild->count_commutative_op(count); |
| } |
| |
| //-------------------------- swap_commutative_op ------------------------------ |
| // Recursively swap specified commutative operation with subtree operands. |
| void MatchNode::swap_commutative_op(bool atroot, int id) { |
| if( _commutative_id == id ) { // id should be > 0 |
| assert(_lChild && _rChild && (_lChild->_lChild || _rChild->_lChild ), |
| "not swappable operation"); |
| MatchNode* tmp = _lChild; |
| _lChild = _rChild; |
| _rChild = tmp; |
| // Don't exit here since we need to build internalop. |
| } |
| |
| bool is_set = ( strcmp(_opType, "Set") == 0 ); |
| if( _lChild ) |
| _lChild->swap_commutative_op(is_set, id); |
| if( _rChild ) |
| _rChild->swap_commutative_op(is_set, id); |
| |
| // If not the root, reduce this subtree to an internal operand |
| if( !atroot && (_lChild || _rChild) ) { |
| build_internalop(); |
| } |
| } |
| |
| //-------------------------- swap_commutative_op ------------------------------ |
| // Recursively swap specified commutative operation with subtree operands. |
| void MatchRule::matchrule_swap_commutative_op(const char* instr_ident, int count, int& match_rules_cnt) { |
| assert(match_rules_cnt < 100," too many match rule clones"); |
| // Clone |
| MatchRule* clone = new MatchRule(_AD, this); |
| // Swap operands of commutative operation |
| ((MatchNode*)clone)->swap_commutative_op(true, count); |
| char* buf = (char*) malloc(strlen(instr_ident) + 4); |
| sprintf(buf, "%s_%d", instr_ident, match_rules_cnt++); |
| clone->_result = buf; |
| |
| clone->_next = this->_next; |
| this-> _next = clone; |
| if( (--count) > 0 ) { |
| this-> matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt); |
| clone->matchrule_swap_commutative_op(instr_ident, count, match_rules_cnt); |
| } |
| } |
| |
| //------------------------------MatchRule-------------------------------------- |
| MatchRule::MatchRule(ArchDesc &ad) |
| : MatchNode(ad), _depth(0), _construct(NULL), _numchilds(0) { |
| _next = NULL; |
| } |
| |
| MatchRule::MatchRule(ArchDesc &ad, MatchRule* mRule) |
| : MatchNode(ad, *mRule, 0), _depth(mRule->_depth), |
| _construct(mRule->_construct), _numchilds(mRule->_numchilds) { |
| _next = NULL; |
| } |
| |
| MatchRule::MatchRule(ArchDesc &ad, MatchNode* mroot, int depth, char *cnstr, |
| int numleaves) |
| : MatchNode(ad,*mroot), _depth(depth), _construct(cnstr), |
| _numchilds(0) { |
| _next = NULL; |
| mroot->_lChild = NULL; |
| mroot->_rChild = NULL; |
| delete mroot; |
| _numleaves = numleaves; |
| _numchilds = (_lChild ? 1 : 0) + (_rChild ? 1 : 0); |
| } |
| MatchRule::~MatchRule() { |
| } |
| |
| // Recursive call collecting info on top-level operands, not transitive. |
| // Implementation does not modify state of internal structures. |
| void MatchRule::append_components(FormDict& locals, ComponentList& components, bool def_flag) const { |
| assert (_name != NULL, "MatchNode::build_components encountered empty node\n"); |
| |
| MatchNode::append_components(locals, components, |
| false /* not necessarily a def */); |
| } |
| |
| // Recursive call on all operands' match rules in my match rule. |
| // Implementation does not modify state of internal structures since they |
| // can be shared. |
| // The MatchNode that is called first treats its |
| bool MatchRule::base_operand(uint &position0, FormDict &globals, |
| const char *&result, const char * &name, |
| const char * &opType)const{ |
| uint position = position0; |
| |
| return (MatchNode::base_operand( position, globals, result, name, opType)); |
| } |
| |
| |
| bool MatchRule::is_base_register(FormDict &globals) const { |
| uint position = 1; |
| const char *result = NULL; |
| const char *name = NULL; |
| const char *opType = NULL; |
| if (!base_operand(position, globals, result, name, opType)) { |
| position = 0; |
| if( base_operand(position, globals, result, name, opType) && |
| (strcmp(opType,"RegI")==0 || |
| strcmp(opType,"RegP")==0 || |
| strcmp(opType,"RegN")==0 || |
| strcmp(opType,"RegL")==0 || |
| strcmp(opType,"RegF")==0 || |
| strcmp(opType,"RegD")==0 || |
| strcmp(opType,"VecS")==0 || |
| strcmp(opType,"VecD")==0 || |
| strcmp(opType,"VecX")==0 || |
| strcmp(opType,"VecY")==0 || |
| strcmp(opType,"VecZ")==0 || |
| strcmp(opType,"Reg" )==0) ) { |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| Form::DataType MatchRule::is_base_constant(FormDict &globals) const { |
| uint position = 1; |
| const char *result = NULL; |
| const char *name = NULL; |
| const char *opType = NULL; |
| if (!base_operand(position, globals, result, name, opType)) { |
| position = 0; |
| if (base_operand(position, globals, result, name, opType)) { |
| return ideal_to_const_type(opType); |
| } |
| } |
| return Form::none; |
| } |
| |
| bool MatchRule::is_chain_rule(FormDict &globals) const { |
| |
| // Check for chain rule, and do not generate a match list for it |
| if ((_lChild == NULL) && (_rChild == NULL) ) { |
| const Form *form = globals[_opType]; |
| // If this is ideal, then it is a base match, not a chain rule. |
| if ( form && form->is_operand() && (!form->ideal_only())) { |
| return true; |
| } |
| } |
| // Check for "Set" form of chain rule, and do not generate a match list |
| if (_rChild) { |
| const char *rch = _rChild->_opType; |
| const Form *form = globals[rch]; |
| if ((!strcmp(_opType,"Set") && |
| ((form) && form->is_operand()))) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| int MatchRule::is_ideal_copy() const { |
| if( _rChild ) { |
| const char *opType = _rChild->_opType; |
| #if 1 |
| if( strcmp(opType,"CastIP")==0 ) |
| return 1; |
| #else |
| if( strcmp(opType,"CastII")==0 ) |
| return 1; |
| // Do not treat *CastPP this way, because it |
| // may transfer a raw pointer to an oop. |
| // If the register allocator were to coalesce this |
| // into a single LRG, the GC maps would be incorrect. |
| //if( strcmp(opType,"CastPP")==0 ) |
| // return 1; |
| //if( strcmp(opType,"CheckCastPP")==0 ) |
| // return 1; |
| // |
| // Do not treat CastX2P or CastP2X this way, because |
| // raw pointers and int types are treated differently |
| // when saving local & stack info for safepoints in |
| // Output(). |
| //if( strcmp(opType,"CastX2P")==0 ) |
| // return 1; |
| //if( strcmp(opType,"CastP2X")==0 ) |
| // return 1; |
| #endif |
| } |
| if( is_chain_rule(_AD.globalNames()) && |
| _lChild && strncmp(_lChild->_opType,"stackSlot",9)==0 ) |
| return 1; |
| return 0; |
| } |
| |
| |
| int MatchRule::is_expensive() const { |
| if( _rChild ) { |
| const char *opType = _rChild->_opType; |
| if( strcmp(opType,"AtanD")==0 || |
| strcmp(opType,"DivD")==0 || |
| strcmp(opType,"DivF")==0 || |
| strcmp(opType,"DivI")==0 || |
| strcmp(opType,"Log10D")==0 || |
| strcmp(opType,"ModD")==0 || |
| strcmp(opType,"ModF")==0 || |
| strcmp(opType,"ModI")==0 || |
| strcmp(opType,"SqrtD")==0 || |
| strcmp(opType,"TanD")==0 || |
| strcmp(opType,"ConvD2F")==0 || |
| strcmp(opType,"ConvD2I")==0 || |
| strcmp(opType,"ConvD2L")==0 || |
| strcmp(opType,"ConvF2D")==0 || |
| strcmp(opType,"ConvF2I")==0 || |
| strcmp(opType,"ConvF2L")==0 || |
| strcmp(opType,"ConvI2D")==0 || |
| strcmp(opType,"ConvI2F")==0 || |
| strcmp(opType,"ConvI2L")==0 || |
| strcmp(opType,"ConvL2D")==0 || |
| strcmp(opType,"ConvL2F")==0 || |
| strcmp(opType,"ConvL2I")==0 || |
| strcmp(opType,"DecodeN")==0 || |
| strcmp(opType,"EncodeP")==0 || |
| strcmp(opType,"EncodePKlass")==0 || |
| strcmp(opType,"DecodeNKlass")==0 || |
| strcmp(opType,"FmaD") == 0 || |
| strcmp(opType,"FmaF") == 0 || |
| strcmp(opType,"RoundDouble")==0 || |
| strcmp(opType,"RoundFloat")==0 || |
| strcmp(opType,"ReverseBytesI")==0 || |
| strcmp(opType,"ReverseBytesL")==0 || |
| strcmp(opType,"ReverseBytesUS")==0 || |
| strcmp(opType,"ReverseBytesS")==0 || |
| strcmp(opType,"ReplicateB")==0 || |
| strcmp(opType,"ReplicateS")==0 || |
| strcmp(opType,"ReplicateI")==0 || |
| strcmp(opType,"ReplicateL")==0 || |
| strcmp(opType,"ReplicateF")==0 || |
| strcmp(opType,"ReplicateD")==0 || |
| strcmp(opType,"AddReductionVI")==0 || |
| strcmp(opType,"AddReductionVL")==0 || |
| strcmp(opType,"AddReductionVF")==0 || |
| strcmp(opType,"AddReductionVD")==0 || |
| strcmp(opType,"MulReductionVI")==0 || |
| strcmp(opType,"MulReductionVL")==0 || |
| strcmp(opType,"MulReductionVF")==0 || |
| strcmp(opType,"MulReductionVD")==0 || |
| 0 /* 0 to line up columns nicely */ ) |
| return 1; |
| } |
| return 0; |
| } |
| |
| bool MatchRule::is_ideal_if() const { |
| if( !_opType ) return false; |
| return |
| !strcmp(_opType,"If" ) || |
| !strcmp(_opType,"CountedLoopEnd"); |
| } |
| |
| bool MatchRule::is_ideal_fastlock() const { |
| if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { |
| return (strcmp(_rChild->_opType,"FastLock") == 0); |
| } |
| return false; |
| } |
| |
| bool MatchRule::is_ideal_membar() const { |
| if( !_opType ) return false; |
| return |
| !strcmp(_opType,"MemBarAcquire") || |
| !strcmp(_opType,"MemBarRelease") || |
| !strcmp(_opType,"MemBarAcquireLock") || |
| !strcmp(_opType,"MemBarReleaseLock") || |
| !strcmp(_opType,"LoadFence" ) || |
| !strcmp(_opType,"StoreFence") || |
| !strcmp(_opType,"MemBarVolatile") || |
| !strcmp(_opType,"MemBarCPUOrder") || |
| !strcmp(_opType,"MemBarStoreStore"); |
| } |
| |
| bool MatchRule::is_ideal_loadPC() const { |
| if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { |
| return (strcmp(_rChild->_opType,"LoadPC") == 0); |
| } |
| return false; |
| } |
| |
| bool MatchRule::is_ideal_box() const { |
| if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { |
| return (strcmp(_rChild->_opType,"Box") == 0); |
| } |
| return false; |
| } |
| |
| bool MatchRule::is_ideal_goto() const { |
| bool ideal_goto = false; |
| |
| if( _opType && (strcmp(_opType,"Goto") == 0) ) { |
| ideal_goto = true; |
| } |
| return ideal_goto; |
| } |
| |
| bool MatchRule::is_ideal_jump() const { |
| if( _opType ) { |
| if( !strcmp(_opType,"Jump") ) |
| return true; |
| } |
| return false; |
| } |
| |
| bool MatchRule::is_ideal_bool() const { |
| if( _opType ) { |
| if( !strcmp(_opType,"Bool") ) |
| return true; |
| } |
| return false; |
| } |
| |
| |
| Form::DataType MatchRule::is_ideal_load() const { |
| Form::DataType ideal_load = Form::none; |
| |
| if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { |
| const char *opType = _rChild->_opType; |
| ideal_load = is_load_from_memory(opType); |
| } |
| |
| return ideal_load; |
| } |
| |
| bool MatchRule::is_vector() const { |
| static const char *vector_list[] = { |
| "AddVB","AddVS","AddVI","AddVL","AddVF","AddVD", |
| "SubVB","SubVS","SubVI","SubVL","SubVF","SubVD", |
| "MulVS","MulVI","MulVL","MulVF","MulVD", |
| "CMoveVD", |
| "DivVF","DivVD", |
| "AbsVF","AbsVD", |
| "NegVF","NegVD", |
| "SqrtVD", |
| "AndV" ,"XorV" ,"OrV", |
| "AddReductionVI", "AddReductionVL", |
| "AddReductionVF", "AddReductionVD", |
| "MulReductionVI", "MulReductionVL", |
| "MulReductionVF", "MulReductionVD", |
| "LShiftCntV","RShiftCntV", |
| "LShiftVB","LShiftVS","LShiftVI","LShiftVL", |
| "RShiftVB","RShiftVS","RShiftVI","RShiftVL", |
| "URShiftVB","URShiftVS","URShiftVI","URShiftVL", |
| "ReplicateB","ReplicateS","ReplicateI","ReplicateL","ReplicateF","ReplicateD", |
| "LoadVector","StoreVector", |
| "FmaVD", "FmaVF", |
| // Next are not supported currently. |
| "PackB","PackS","PackI","PackL","PackF","PackD","Pack2L","Pack2D", |
| "ExtractB","ExtractUB","ExtractC","ExtractS","ExtractI","ExtractL","ExtractF","ExtractD" |
| }; |
| int cnt = sizeof(vector_list)/sizeof(char*); |
| if (_rChild) { |
| const char *opType = _rChild->_opType; |
| for (int i=0; i<cnt; i++) |
| if (strcmp(opType,vector_list[i]) == 0) |
| return true; |
| } |
| return false; |
| } |
| |
| |
| bool MatchRule::skip_antidep_check() const { |
| // Some loads operate on what is effectively immutable memory so we |
| // should skip the anti dep computations. For some of these nodes |
| // the rewritable field keeps the anti dep logic from triggering but |
| // for certain kinds of LoadKlass it does not since they are |
| // actually reading memory which could be rewritten by the runtime, |
| // though never by generated code. This disables it uniformly for |
| // the nodes that behave like this: LoadKlass, LoadNKlass and |
| // LoadRange. |
| if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { |
| const char *opType = _rChild->_opType; |
| if (strcmp("LoadKlass", opType) == 0 || |
| strcmp("LoadNKlass", opType) == 0 || |
| strcmp("LoadRange", opType) == 0) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| Form::DataType MatchRule::is_ideal_store() const { |
| Form::DataType ideal_store = Form::none; |
| |
| if ( _opType && (strcmp(_opType,"Set") == 0) && _rChild ) { |
| const char *opType = _rChild->_opType; |
| ideal_store = is_store_to_memory(opType); |
| } |
| |
| return ideal_store; |
| } |
| |
| |
| void MatchRule::dump() { |
| output(stderr); |
| } |
| |
| // Write just one line. |
| void MatchRule::output_short(FILE *fp) { |
| fprintf(fp,"MatchRule: ( %s",_name); |
| if (_lChild) _lChild->output(fp); |
| if (_rChild) _rChild->output(fp); |
| fprintf(fp," )"); |
| } |
| |
| void MatchRule::output(FILE *fp) { |
| output_short(fp); |
| fprintf(fp,"\n nesting depth = %d\n", _depth); |
| if (_result) fprintf(fp," Result Type = %s", _result); |
| fprintf(fp,"\n"); |
| } |
| |
| //------------------------------Attribute-------------------------------------- |
| Attribute::Attribute(char *id, char* val, int type) |
| : _ident(id), _val(val), _atype(type) { |
| } |
| Attribute::~Attribute() { |
| } |
| |
| int Attribute::int_val(ArchDesc &ad) { |
| // Make sure it is an integer constant: |
| int result = 0; |
| if (!_val || !ADLParser::is_int_token(_val, result)) { |
| ad.syntax_err(0, "Attribute %s must have an integer value: %s", |
| _ident, _val ? _val : ""); |
| } |
| return result; |
| } |
| |
| void Attribute::dump() { |
| output(stderr); |
| } // Debug printer |
| |
| // Write to output files |
| void Attribute::output(FILE *fp) { |
| fprintf(fp,"Attribute: %s %s\n", (_ident?_ident:""), (_val?_val:"")); |
| } |
| |
| //------------------------------FormatRule---------------------------------- |
| FormatRule::FormatRule(char *temp) |
| : _temp(temp) { |
| } |
| FormatRule::~FormatRule() { |
| } |
| |
| void FormatRule::dump() { |
| output(stderr); |
| } |
| |
| // Write to output files |
| void FormatRule::output(FILE *fp) { |
| fprintf(fp,"\nFormat Rule: \n%s", (_temp?_temp:"")); |
| fprintf(fp,"\n"); |
| } |