| /* Interprocedural analyses. |
| Copyright (C) 2005-2015 Free Software Foundation, Inc. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 3, or (at your option) any later |
| version. |
| |
| GCC 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 |
| for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef IPA_PROP_H |
| #define IPA_PROP_H |
| |
| /* The following definitions and interfaces are used by |
| interprocedural analyses or parameters. */ |
| |
| #define IPA_UNDESCRIBED_USE -1 |
| |
| /* ipa-prop.c stuff (ipa-cp, indirect inlining): */ |
| |
| /* A jump function for a callsite represents the values passed as actual |
| arguments of the callsite. They were originally proposed in a paper called |
| "Interprocedural Constant Propagation", by David Callahan, Keith D Cooper, |
| Ken Kennedy, Linda Torczon in Comp86, pg 152-161. There are three main |
| types of values : |
| |
| Pass-through - the caller's formal parameter is passed as an actual |
| argument, possibly one simple operation performed on it. |
| Constant - a constant (is_gimple_ip_invariant)is passed as an actual |
| argument. |
| Unknown - neither of the above. |
| |
| IPA_JF_ANCESTOR is a special pass-through jump function, which means that |
| the result is an address of a part of the object pointed to by the formal |
| parameter to which the function refers. It is mainly intended to represent |
| getting addresses of of ancestor fields in C++ |
| (e.g. &this_1(D)->D.1766.D.1756). Note that if the original pointer is |
| NULL, ancestor jump function must behave like a simple pass-through. |
| |
| Other pass-through functions can either simply pass on an unchanged formal |
| parameter or can apply one simple binary operation to it (such jump |
| functions are called polynomial). |
| |
| Jump functions are computed in ipa-prop.c by function |
| update_call_notes_after_inlining. Some information can be lost and jump |
| functions degraded accordingly when inlining, see |
| update_call_notes_after_inlining in the same file. */ |
| |
| enum jump_func_type |
| { |
| IPA_JF_UNKNOWN = 0, /* newly allocated and zeroed jump functions default */ |
| IPA_JF_CONST, /* represented by field costant */ |
| IPA_JF_PASS_THROUGH, /* represented by field pass_through */ |
| IPA_JF_ANCESTOR /* represented by field ancestor */ |
| }; |
| |
| struct ipa_cst_ref_desc; |
| |
| /* Structure holding data required to describe a constant jump function. */ |
| struct GTY(()) ipa_constant_data |
| { |
| /* THe value of the constant. */ |
| tree value; |
| /* Pointer to the structure that describes the reference. */ |
| struct ipa_cst_ref_desc GTY((skip)) *rdesc; |
| }; |
| |
| /* Structure holding data required to describe a pass-through jump function. */ |
| |
| struct GTY(()) ipa_pass_through_data |
| { |
| /* If an operation is to be performed on the original parameter, this is the |
| second (constant) operand. */ |
| tree operand; |
| /* Number of the caller's formal parameter being passed. */ |
| int formal_id; |
| /* Operation that is performed on the argument before it is passed on. |
| NOP_EXPR means no operation. Otherwise oper must be a simple binary |
| arithmetic operation where the caller's parameter is the first operand and |
| operand field from this structure is the second one. */ |
| enum tree_code operation; |
| /* When the passed value is a pointer, it is set to true only when we are |
| certain that no write to the object it points to has occurred since the |
| caller functions started execution, except for changes noted in the |
| aggregate part of the jump function (see description of |
| ipa_agg_jump_function). The flag is used only when the operation is |
| NOP_EXPR. */ |
| unsigned agg_preserved : 1; |
| }; |
| |
| /* Structure holding data required to describe an ancestor pass-through |
| jump function. */ |
| |
| struct GTY(()) ipa_ancestor_jf_data |
| { |
| /* Offset of the field representing the ancestor. */ |
| HOST_WIDE_INT offset; |
| /* Number of the caller's formal parameter being passed. */ |
| int formal_id; |
| /* Flag with the same meaning like agg_preserve in ipa_pass_through_data. */ |
| unsigned agg_preserved : 1; |
| }; |
| |
| /* An element in an aggegate part of a jump function describing a known value |
| at a given offset. When it is part of a pass-through jump function with |
| agg_preserved set or an ancestor jump function with agg_preserved set, all |
| unlisted positions are assumed to be preserved but the value can be a type |
| node, which means that the particular piece (starting at offset and having |
| the size of the type) is clobbered with an unknown value. When |
| agg_preserved is false or the type of the containing jump function is |
| different, all unlisted parts are assumed to be unknown and all values must |
| fulfill is_gimple_ip_invariant. */ |
| |
| struct GTY(()) ipa_agg_jf_item |
| { |
| /* The offset at which the known value is located within the aggregate. */ |
| HOST_WIDE_INT offset; |
| |
| /* The known constant or type if this is a clobber. */ |
| tree value; |
| }; |
| |
| |
| /* Aggregate jump function - i.e. description of contents of aggregates passed |
| either by reference or value. */ |
| |
| struct GTY(()) ipa_agg_jump_function |
| { |
| /* Description of the individual items. */ |
| vec<ipa_agg_jf_item, va_gc> *items; |
| /* True if the data was passed by reference (as opposed to by value). */ |
| bool by_ref; |
| }; |
| |
| typedef struct ipa_agg_jump_function *ipa_agg_jump_function_p; |
| |
| /* Info about pointer alignments. */ |
| struct GTY(()) ipa_alignment |
| { |
| /* The data fields below are valid only if known is true. */ |
| bool known; |
| /* See ptr_info_def and get_pointer_alignment_1 for description of these |
| two. */ |
| unsigned align; |
| unsigned misalign; |
| }; |
| |
| /* A jump function for a callsite represents the values passed as actual |
| arguments of the callsite. See enum jump_func_type for the various |
| types of jump functions supported. */ |
| struct GTY (()) ipa_jump_func |
| { |
| /* Aggregate contants description. See struct ipa_agg_jump_function and its |
| description. */ |
| struct ipa_agg_jump_function agg; |
| |
| /* Information about alignment of pointers. */ |
| struct ipa_alignment alignment; |
| |
| enum jump_func_type type; |
| /* Represents a value of a jump function. pass_through is used only in jump |
| function context. constant represents the actual constant in constant jump |
| functions and member_cst holds constant c++ member functions. */ |
| union jump_func_value |
| { |
| struct ipa_constant_data GTY ((tag ("IPA_JF_CONST"))) constant; |
| struct ipa_pass_through_data GTY ((tag ("IPA_JF_PASS_THROUGH"))) pass_through; |
| struct ipa_ancestor_jf_data GTY ((tag ("IPA_JF_ANCESTOR"))) ancestor; |
| } GTY ((desc ("%1.type"))) value; |
| }; |
| |
| |
| /* Return the constant stored in a constant jump functin JFUNC. */ |
| |
| static inline tree |
| ipa_get_jf_constant (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_CONST); |
| return jfunc->value.constant.value; |
| } |
| |
| static inline struct ipa_cst_ref_desc * |
| ipa_get_jf_constant_rdesc (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_CONST); |
| return jfunc->value.constant.rdesc; |
| } |
| |
| /* Return the operand of a pass through jmp function JFUNC. */ |
| |
| static inline tree |
| ipa_get_jf_pass_through_operand (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH); |
| return jfunc->value.pass_through.operand; |
| } |
| |
| /* Return the number of the caller's formal parameter that a pass through jump |
| function JFUNC refers to. */ |
| |
| static inline int |
| ipa_get_jf_pass_through_formal_id (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH); |
| return jfunc->value.pass_through.formal_id; |
| } |
| |
| /* Return operation of a pass through jump function JFUNC. */ |
| |
| static inline enum tree_code |
| ipa_get_jf_pass_through_operation (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH); |
| return jfunc->value.pass_through.operation; |
| } |
| |
| /* Return the agg_preserved flag of a pass through jump function JFUNC. */ |
| |
| static inline bool |
| ipa_get_jf_pass_through_agg_preserved (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH); |
| return jfunc->value.pass_through.agg_preserved; |
| } |
| |
| /* Return true if pass through jump function JFUNC preserves type |
| information. */ |
| |
| static inline bool |
| ipa_get_jf_pass_through_type_preserved (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_PASS_THROUGH); |
| return jfunc->value.pass_through.agg_preserved; |
| } |
| |
| /* Return the offset of an ancestor jump function JFUNC. */ |
| |
| static inline HOST_WIDE_INT |
| ipa_get_jf_ancestor_offset (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR); |
| return jfunc->value.ancestor.offset; |
| } |
| |
| /* Return the number of the caller's formal parameter that an ancestor jump |
| function JFUNC refers to. */ |
| |
| static inline int |
| ipa_get_jf_ancestor_formal_id (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR); |
| return jfunc->value.ancestor.formal_id; |
| } |
| |
| /* Return the agg_preserved flag of an ancestor jump function JFUNC. */ |
| |
| static inline bool |
| ipa_get_jf_ancestor_agg_preserved (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR); |
| return jfunc->value.ancestor.agg_preserved; |
| } |
| |
| /* Return true if ancestor jump function JFUNC presrves type information. */ |
| |
| static inline bool |
| ipa_get_jf_ancestor_type_preserved (struct ipa_jump_func *jfunc) |
| { |
| gcc_checking_assert (jfunc->type == IPA_JF_ANCESTOR); |
| return jfunc->value.ancestor.agg_preserved; |
| } |
| |
| /* Summary describing a single formal parameter. */ |
| |
| struct ipa_param_descriptor |
| { |
| /* PARAM_DECL of this parameter. */ |
| tree decl; |
| /* If all uses of the parameter are described by ipa-prop structures, this |
| says how many there are. If any use could not be described by means of |
| ipa-prop structures, this is IPA_UNDESCRIBED_USE. */ |
| int controlled_uses; |
| unsigned int move_cost : 31; |
| /* The parameter is used. */ |
| unsigned used : 1; |
| }; |
| |
| /* ipa_node_params stores information related to formal parameters of functions |
| and some other information for interprocedural passes that operate on |
| parameters (such as ipa-cp). */ |
| |
| struct ipa_node_params |
| { |
| ~ipa_node_params (); |
| |
| /* Information about individual formal parameters that are gathered when |
| summaries are generated. */ |
| vec<ipa_param_descriptor> descriptors; |
| /* Pointer to an array of structures describing individual formal |
| parameters. */ |
| struct ipcp_param_lattices *lattices; |
| /* Only for versioned nodes this field would not be NULL, |
| it points to the node that IPA cp cloned from. */ |
| struct cgraph_node *ipcp_orig_node; |
| /* If this node is an ipa-cp clone, these are the known constants that |
| describe what it has been specialized for. */ |
| vec<tree> known_csts; |
| /* If this node is an ipa-cp clone, these are the known polymorphic contexts |
| that describe what it has been specialized for. */ |
| vec<ipa_polymorphic_call_context> known_contexts; |
| /* Whether the param uses analysis and jump function computation has already |
| been performed. */ |
| unsigned analysis_done : 1; |
| /* Whether the function is enqueued in ipa-cp propagation stack. */ |
| unsigned node_enqueued : 1; |
| /* Whether we should create a specialized version based on values that are |
| known to be constant in all contexts. */ |
| unsigned do_clone_for_all_contexts : 1; |
| /* Set if this is an IPA-CP clone for all contexts. */ |
| unsigned is_all_contexts_clone : 1; |
| /* Node has been completely replaced by clones and will be removed after |
| ipa-cp is finished. */ |
| unsigned node_dead : 1; |
| /* Node is involved in a recursion, potentionally indirect. */ |
| unsigned node_within_scc : 1; |
| /* Node is calling a private function called only once. */ |
| unsigned node_calling_single_call : 1; |
| }; |
| |
| /* Intermediate information that we get from alias analysis about a particular |
| parameter in a particular basic_block. When a parameter or the memory it |
| references is marked modified, we use that information in all dominated |
| blocks without consulting alias analysis oracle. */ |
| |
| struct ipa_param_aa_status |
| { |
| /* Set when this structure contains meaningful information. If not, the |
| structure describing a dominating BB should be used instead. */ |
| bool valid; |
| |
| /* Whether we have seen something which might have modified the data in |
| question. PARM is for the parameter itself, REF is for data it points to |
| but using the alias type of individual accesses and PT is the same thing |
| but for computing aggregate pass-through functions using a very inclusive |
| ao_ref. */ |
| bool parm_modified, ref_modified, pt_modified; |
| }; |
| |
| /* Information related to a given BB that used only when looking at function |
| body. */ |
| |
| struct ipa_bb_info |
| { |
| /* Call graph edges going out of this BB. */ |
| vec<cgraph_edge *> cg_edges; |
| /* Alias analysis statuses of each formal parameter at this bb. */ |
| vec<ipa_param_aa_status> param_aa_statuses; |
| }; |
| |
| /* Structure with global information that is only used when looking at function |
| body. */ |
| |
| struct ipa_func_body_info |
| { |
| /* The node that is being analyzed. */ |
| cgraph_node *node; |
| |
| /* Its info. */ |
| struct ipa_node_params *info; |
| |
| /* Information about individual BBs. */ |
| vec<ipa_bb_info> bb_infos; |
| |
| /* Number of parameters. */ |
| int param_count; |
| |
| /* Number of statements already walked by when analyzing this function. */ |
| unsigned int aa_walked; |
| }; |
| |
| /* ipa_node_params access functions. Please use these to access fields that |
| are or will be shared among various passes. */ |
| |
| /* Return the number of formal parameters. */ |
| |
| static inline int |
| ipa_get_param_count (struct ipa_node_params *info) |
| { |
| return info->descriptors.length (); |
| } |
| |
| /* Return the declaration of Ith formal parameter of the function corresponding |
| to INFO. Note there is no setter function as this array is built just once |
| using ipa_initialize_node_params. */ |
| |
| static inline tree |
| ipa_get_param (struct ipa_node_params *info, int i) |
| { |
| gcc_checking_assert (!flag_wpa); |
| return info->descriptors[i].decl; |
| } |
| |
| /* Return the move cost of Ith formal parameter of the function corresponding |
| to INFO. */ |
| |
| static inline int |
| ipa_get_param_move_cost (struct ipa_node_params *info, int i) |
| { |
| return info->descriptors[i].move_cost; |
| } |
| |
| /* Set the used flag corresponding to the Ith formal parameter of the function |
| associated with INFO to VAL. */ |
| |
| static inline void |
| ipa_set_param_used (struct ipa_node_params *info, int i, bool val) |
| { |
| info->descriptors[i].used = val; |
| } |
| |
| /* Return how many uses described by ipa-prop a parameter has or |
| IPA_UNDESCRIBED_USE if there is a use that is not described by these |
| structures. */ |
| static inline int |
| ipa_get_controlled_uses (struct ipa_node_params *info, int i) |
| { |
| /* FIXME: introducing speuclation causes out of bounds access here. */ |
| if (info->descriptors.length () > (unsigned)i) |
| return info->descriptors[i].controlled_uses; |
| return IPA_UNDESCRIBED_USE; |
| } |
| |
| /* Set the controlled counter of a given parameter. */ |
| |
| static inline void |
| ipa_set_controlled_uses (struct ipa_node_params *info, int i, int val) |
| { |
| info->descriptors[i].controlled_uses = val; |
| } |
| |
| /* Return the used flag corresponding to the Ith formal parameter of the |
| function associated with INFO. */ |
| |
| static inline bool |
| ipa_is_param_used (struct ipa_node_params *info, int i) |
| { |
| return info->descriptors[i].used; |
| } |
| |
| /* Information about replacements done in aggregates for a given node (each |
| node has its linked list). */ |
| struct GTY(()) ipa_agg_replacement_value |
| { |
| /* Next item in the linked list. */ |
| struct ipa_agg_replacement_value *next; |
| /* Offset within the aggregate. */ |
| HOST_WIDE_INT offset; |
| /* The constant value. */ |
| tree value; |
| /* The paramter index. */ |
| int index; |
| /* Whether the value was passed by reference. */ |
| bool by_ref; |
| }; |
| |
| /* Structure holding information for the transformation phase of IPA-CP. */ |
| |
| struct GTY(()) ipcp_transformation_summary |
| { |
| /* Linked list of known aggregate values. */ |
| ipa_agg_replacement_value *agg_values; |
| /* Alignment information for pointers. */ |
| vec<ipa_alignment, va_gc> *alignments; |
| }; |
| |
| void ipa_set_node_agg_value_chain (struct cgraph_node *node, |
| struct ipa_agg_replacement_value *aggvals); |
| void ipcp_grow_transformations_if_necessary (void); |
| |
| /* ipa_edge_args stores information related to a callsite and particularly its |
| arguments. It can be accessed by the IPA_EDGE_REF macro. */ |
| struct GTY(()) ipa_edge_args |
| { |
| /* Vector of the callsite's jump function of each parameter. */ |
| vec<ipa_jump_func, va_gc> *jump_functions; |
| vec<ipa_polymorphic_call_context, va_gc> *polymorphic_call_contexts; |
| }; |
| |
| /* ipa_edge_args access functions. Please use these to access fields that |
| are or will be shared among various passes. */ |
| |
| /* Return the number of actual arguments. */ |
| |
| static inline int |
| ipa_get_cs_argument_count (struct ipa_edge_args *args) |
| { |
| return vec_safe_length (args->jump_functions); |
| } |
| |
| /* Returns a pointer to the jump function for the ith argument. Please note |
| there is no setter function as jump functions are all set up in |
| ipa_compute_jump_functions. */ |
| |
| static inline struct ipa_jump_func * |
| ipa_get_ith_jump_func (struct ipa_edge_args *args, int i) |
| { |
| return &(*args->jump_functions)[i]; |
| } |
| |
| /* Returns a pointer to the polymorphic call context for the ith argument. |
| NULL if contexts are not computed. */ |
| static inline struct ipa_polymorphic_call_context * |
| ipa_get_ith_polymorhic_call_context (struct ipa_edge_args *args, int i) |
| { |
| if (!args->polymorphic_call_contexts) |
| return NULL; |
| return &(*args->polymorphic_call_contexts)[i]; |
| } |
| |
| /* Function summary for ipa_node_params. */ |
| class ipa_node_params_t: public function_summary <ipa_node_params *> |
| { |
| public: |
| ipa_node_params_t (symbol_table *table): |
| function_summary<ipa_node_params *> (table) { } |
| |
| /* Hook that is called by summary when a node is duplicated. */ |
| virtual void duplicate (cgraph_node *node, |
| cgraph_node *node2, |
| ipa_node_params *data, |
| ipa_node_params *data2); |
| }; |
| |
| /* Function summary where the parameter infos are actually stored. */ |
| extern ipa_node_params_t *ipa_node_params_sum; |
| /* Vector of IPA-CP transformation data for each clone. */ |
| extern GTY(()) vec<ipcp_transformation_summary, va_gc> *ipcp_transformations; |
| /* Vector where the parameter infos are actually stored. */ |
| extern GTY(()) vec<ipa_edge_args, va_gc> *ipa_edge_args_vector; |
| |
| /* Return the associated parameter/argument info corresponding to the given |
| node/edge. */ |
| #define IPA_NODE_REF(NODE) (ipa_node_params_sum->get (NODE)) |
| #define IPA_EDGE_REF(EDGE) (&(*ipa_edge_args_vector)[(EDGE)->uid]) |
| /* This macro checks validity of index returned by |
| ipa_get_param_decl_index function. */ |
| #define IS_VALID_JUMP_FUNC_INDEX(I) ((I) != -1) |
| |
| /* Creating and freeing ipa_node_params and ipa_edge_args. */ |
| void ipa_create_all_node_params (void); |
| void ipa_create_all_edge_args (void); |
| void ipa_free_edge_args_substructures (struct ipa_edge_args *); |
| void ipa_free_all_node_params (void); |
| void ipa_free_all_edge_args (void); |
| void ipa_free_all_structures_after_ipa_cp (void); |
| void ipa_free_all_structures_after_iinln (void); |
| |
| void ipa_register_cgraph_hooks (void); |
| int count_formal_params (tree fndecl); |
| |
| /* This function ensures the array of node param infos is big enough to |
| accommodate a structure for all nodes and reallocates it if not. */ |
| |
| static inline void |
| ipa_check_create_node_params (void) |
| { |
| if (!ipa_node_params_sum) |
| ipa_node_params_sum = new ipa_node_params_t (symtab); |
| } |
| |
| /* This function ensures the array of edge arguments infos is big enough to |
| accommodate a structure for all edges and reallocates it if not. */ |
| |
| static inline void |
| ipa_check_create_edge_args (void) |
| { |
| if (vec_safe_length (ipa_edge_args_vector) |
| <= (unsigned) symtab->edges_max_uid) |
| vec_safe_grow_cleared (ipa_edge_args_vector, symtab->edges_max_uid + 1); |
| } |
| |
| /* Returns true if the array of edge infos is large enough to accommodate an |
| info for EDGE. The main purpose of this function is that debug dumping |
| function can check info availability without causing reallocations. */ |
| |
| static inline bool |
| ipa_edge_args_info_available_for_edge_p (struct cgraph_edge *edge) |
| { |
| return ((unsigned) edge->uid < vec_safe_length (ipa_edge_args_vector)); |
| } |
| |
| static inline ipcp_transformation_summary * |
| ipcp_get_transformation_summary (cgraph_node *node) |
| { |
| if ((unsigned) node->uid >= vec_safe_length (ipcp_transformations)) |
| return NULL; |
| return &(*ipcp_transformations)[node->uid]; |
| } |
| |
| /* Return the aggregate replacements for NODE, if there are any. */ |
| |
| static inline struct ipa_agg_replacement_value * |
| ipa_get_agg_replacements_for_node (cgraph_node *node) |
| { |
| ipcp_transformation_summary *ts = ipcp_get_transformation_summary (node); |
| return ts ? ts->agg_values : NULL; |
| } |
| |
| /* Function formal parameters related computations. */ |
| void ipa_initialize_node_params (struct cgraph_node *node); |
| bool ipa_propagate_indirect_call_infos (struct cgraph_edge *cs, |
| vec<cgraph_edge *> *new_edges); |
| |
| /* Indirect edge and binfo processing. */ |
| tree ipa_get_indirect_edge_target (struct cgraph_edge *ie, |
| vec<tree> , |
| vec<ipa_polymorphic_call_context>, |
| vec<ipa_agg_jump_function_p>, |
| bool *); |
| struct cgraph_edge *ipa_make_edge_direct_to_target (struct cgraph_edge *, tree, |
| bool speculative = false); |
| tree ipa_impossible_devirt_target (struct cgraph_edge *, tree); |
| |
| /* Functions related to both. */ |
| void ipa_analyze_node (struct cgraph_node *); |
| |
| /* Aggregate jump function related functions. */ |
| tree ipa_find_agg_cst_for_param (struct ipa_agg_jump_function *, HOST_WIDE_INT, |
| bool); |
| bool ipa_load_from_parm_agg (struct ipa_func_body_info *, |
| vec<ipa_param_descriptor>, gimple, tree, int *, |
| HOST_WIDE_INT *, HOST_WIDE_INT *, bool *); |
| |
| /* Debugging interface. */ |
| void ipa_print_node_params (FILE *, struct cgraph_node *node); |
| void ipa_print_all_params (FILE *); |
| void ipa_print_node_jump_functions (FILE *f, struct cgraph_node *node); |
| void ipa_print_all_jump_functions (FILE * f); |
| void ipcp_verify_propagated_values (void); |
| |
| extern alloc_pool ipcp_cst_values_pool; |
| extern alloc_pool ipcp_poly_ctx_values_pool; |
| extern alloc_pool ipcp_sources_pool; |
| extern alloc_pool ipcp_agg_lattice_pool; |
| |
| /* Operation to be performed for the parameter in ipa_parm_adjustment |
| below. */ |
| enum ipa_parm_op { |
| IPA_PARM_OP_NONE, |
| |
| /* This describes a brand new parameter. |
| |
| The field `type' should be set to the new type, `arg_prefix' |
| should be set to the string prefix for the new DECL_NAME, and |
| `new_decl' will ultimately hold the newly created argument. */ |
| IPA_PARM_OP_NEW, |
| |
| /* This new parameter is an unmodified parameter at index base_index. */ |
| IPA_PARM_OP_COPY, |
| |
| /* This adjustment describes a parameter that is about to be removed |
| completely. Most users will probably need to book keep those so that they |
| don't leave behinfd any non default def ssa names belonging to them. */ |
| IPA_PARM_OP_REMOVE |
| }; |
| |
| /* Structure to describe transformations of formal parameters and actual |
| arguments. Each instance describes one new parameter and they are meant to |
| be stored in a vector. Additionally, most users will probably want to store |
| adjustments about parameters that are being removed altogether so that SSA |
| names belonging to them can be replaced by SSA names of an artificial |
| variable. */ |
| struct ipa_parm_adjustment |
| { |
| /* The original PARM_DECL itself, helpful for processing of the body of the |
| function itself. Intended for traversing function bodies. |
| ipa_modify_formal_parameters, ipa_modify_call_arguments and |
| ipa_combine_adjustments ignore this and use base_index. |
| ipa_modify_formal_parameters actually sets this. */ |
| tree base; |
| |
| /* Type of the new parameter. However, if by_ref is true, the real type will |
| be a pointer to this type. */ |
| tree type; |
| |
| /* Alias refrerence type to be used in MEM_REFs when adjusting caller |
| arguments. */ |
| tree alias_ptr_type; |
| |
| /* The new declaration when creating/replacing a parameter. Created |
| by ipa_modify_formal_parameters, useful for functions modifying |
| the body accordingly. For brand new arguments, this is the newly |
| created argument. */ |
| tree new_decl; |
| |
| /* New declaration of a substitute variable that we may use to replace all |
| non-default-def ssa names when a parm decl is going away. */ |
| tree new_ssa_base; |
| |
| /* If non-NULL and the original parameter is to be removed (copy_param below |
| is NULL), this is going to be its nonlocalized vars value. */ |
| tree nonlocal_value; |
| |
| /* This holds the prefix to be used for the new DECL_NAME. */ |
| const char *arg_prefix; |
| |
| /* Offset into the original parameter (for the cases when the new parameter |
| is a component of an original one). */ |
| HOST_WIDE_INT offset; |
| |
| /* Zero based index of the original parameter this one is based on. */ |
| int base_index; |
| |
| /* Whether this parameter is a new parameter, a copy of an old one, |
| or one about to be removed. */ |
| enum ipa_parm_op op; |
| |
| /* The parameter is to be passed by reference. */ |
| unsigned by_ref : 1; |
| }; |
| |
| typedef vec<ipa_parm_adjustment> ipa_parm_adjustment_vec; |
| |
| vec<tree> ipa_get_vector_of_formal_parms (tree fndecl); |
| vec<tree> ipa_get_vector_of_formal_parm_types (tree fntype); |
| void ipa_modify_formal_parameters (tree fndecl, ipa_parm_adjustment_vec); |
| void ipa_modify_call_arguments (struct cgraph_edge *, gcall *, |
| ipa_parm_adjustment_vec); |
| ipa_parm_adjustment_vec ipa_combine_adjustments (ipa_parm_adjustment_vec, |
| ipa_parm_adjustment_vec); |
| void ipa_dump_param_adjustments (FILE *, ipa_parm_adjustment_vec, tree); |
| void ipa_dump_agg_replacement_values (FILE *f, |
| struct ipa_agg_replacement_value *av); |
| void ipa_prop_write_jump_functions (void); |
| void ipa_prop_read_jump_functions (void); |
| void ipcp_write_transformation_summaries (void); |
| void ipcp_read_transformation_summaries (void); |
| void ipa_update_after_lto_read (void); |
| int ipa_get_param_decl_index (struct ipa_node_params *, tree); |
| tree ipa_value_from_jfunc (struct ipa_node_params *info, |
| struct ipa_jump_func *jfunc); |
| unsigned int ipcp_transform_function (struct cgraph_node *node); |
| ipa_polymorphic_call_context ipa_context_from_jfunc (ipa_node_params *, |
| cgraph_edge *, |
| int, |
| ipa_jump_func *); |
| void ipa_dump_param (FILE *, struct ipa_node_params *info, int i); |
| bool ipa_modify_expr (tree *, bool, ipa_parm_adjustment_vec); |
| ipa_parm_adjustment *ipa_get_adjustment_candidate (tree **, bool *, |
| ipa_parm_adjustment_vec, |
| bool); |
| |
| |
| /* From tree-sra.c: */ |
| tree build_ref_for_offset (location_t, tree, HOST_WIDE_INT, tree, |
| gimple_stmt_iterator *, bool); |
| |
| /* In ipa-cp.c */ |
| void ipa_cp_c_finalize (void); |
| |
| #endif /* IPA_PROP_H */ |