/* Interprocedural analyses.
- Copyright (C) 2005 Free Software Foundation, Inc.
+ 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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef IPA_PROP_H
#define IPA_PROP_H
-#include "tree.h"
-
/* The following definitions and interfaces are used by
- interprocedural analyses. */
-
-/* A jump function for a callsite represents the values passed as actual
- arguments of the callsite. There are three main types of values :
- Formal - the caller's formal parameter is passed as an actual argument.
- Constant - a constant is passed as an actual argument.
- Unknown - neither of the above.
- Integer and real constants are represented as CONST_IPATYPE and Fortran
- constants are represented as CONST_IPATYPE_REF. */
+ 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
{
- UNKNOWN_IPATYPE,
- CONST_IPATYPE,
- CONST_IPATYPE_REF,
- FORMAL_IPATYPE
-};
-
-/* All formal parameters in the program have a cval computed by
- the interprocedural stage of IPCP.
- There are three main values of cval :
- TOP - unknown.
- BOTTOM - non constant.
- CONSTANT_TYPE - constant value.
- Cval of formal f will have a constant value if all callsites to this
- function have the same constant value passed to f.
- Integer and real constants are represented as CONST_IPATYPE and Fortran
- constants are represented as CONST_IPATYPE_REF. */
-enum cvalue_type
-{
- BOTTOM,
- CONST_VALUE,
- CONST_VALUE_REF,
- TOP
-};
-
-/* Represents the value of either jump function or cval.
- value represents a constant.
- formal_id is used only in jump function context and represents
- pass-through parameter (the formal of caller is passed
- as argument). */
-union parameter_info
-{
- unsigned int formal_id;
+ 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;
};
-/* A jump function for a callsite represents the values passed as actual
- arguments of the callsite. See enum jump_func_type for the various
+/* 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 ipa_jump_func
+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;
- union parameter_info info_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;
};
-/* All formal parameters in the program have a cval computed by
- the interprocedural stage of IPCP. See enum cvalue_type for
- the various types of cvals supported */
-struct ipcp_formal
+
+/* Return the constant stored in a constant jump functin JFUNC. */
+
+static inline tree
+ipa_get_jf_constant (struct ipa_jump_func *jfunc)
{
- enum cvalue_type cval_type;
- union parameter_info cvalue;
-};
+ gcc_checking_assert (jfunc->type == IPA_JF_CONST);
+ return jfunc->value.constant.value;
+}
-/* Represent which DECL tree (or reference to such tree)
- will be replaced by another tree while versioning. */
-struct ipa_replace_map
+static inline struct ipa_cst_ref_desc *
+ipa_get_jf_constant_rdesc (struct ipa_jump_func *jfunc)
{
- /* The tree that will be replaced. */
- tree old_tree;
- /* The new (replacing) tree. */
- tree new_tree;
- /* True when a substitution should be done, false otherwise. */
- bool replace_p;
- /* True when we replace a reference to old_tree. */
- bool ref_p;
+ 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;
};
-/* Return the field in cgraph_node/cgraph_edge struct that points
- to ipa_node/ipa_edge struct. */
-#define IPA_NODE_REF(MT) ((struct ipa_node *)(MT)->aux)
-#define IPA_EDGE_REF(EDGE) ((struct ipa_edge *)(EDGE)->aux)
-/* This macro checks validity of index returned by
- ipa_method_tree_map function. */
-#define IS_VALID_TREE_MAP_INDEX(I) ((I) != -1)
-
-/* ipa_node stores information related to a method and
- its formal parameters. It is pointed to by a field in the
- method's corresponding cgraph_node.
-
- ipa_edge stores information related to a callsite and
- its arguments. It is pointed to by a field in the
- callsite's corresponding cgraph_edge. */
-struct ipa_node
-{
- /* Number of formal parameters of this method. When set to 0,
- this method's parameters would not be analyzed by the different
- stages of IPA CP. */
- int ipa_arg_num;
- /* Array of cvals. */
- struct ipcp_formal *ipcp_cval;
- /* Mapping each parameter to its PARM_DECL tree. */
- tree *ipa_param_tree;
- /* Indicating which parameter is modified in its method. */
- bool *ipa_mod;
+/* 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;
- /* Meaningful only for original methods. Expresses the
- ratio between the direct calls and sum of all invocations of
- this function (given by profiling info). It is used to calculate
- the profiling information of the original function and the versioned
- one. */
- gcov_type count_scale;
-};
-
-struct ipa_edge
-{
- /* Number of actual arguments in this callsite. When set to 0,
- this callsite's parameters would not be analyzed by the different
- stages of IPA CP. */
- int ipa_param_num;
- /* Array of the callsite's jump function of each parameter. */
- struct ipa_jump_func *ipa_param_map;
-};
-
-/* A methodlist element (referred to also as methodlist node). It is used
- to create a temporary worklist used in
- the propagation stage of IPCP. (can be used for more IPA
- optimizations) */
-struct ipa_methodlist
-{
- struct cgraph_node *method_p;
- struct ipa_methodlist *next_method;
-};
-
-/* A pointer to a methodlist element. */
-typedef struct ipa_methodlist *ipa_methodlist_p;
-
-/* ipa_methodlist interface. */
-ipa_methodlist_p ipa_methodlist_init (void);
-bool ipa_methodlist_not_empty (ipa_methodlist_p);
-void ipa_add_method (ipa_methodlist_p *, struct cgraph_node *);
-struct cgraph_node *ipa_remove_method (ipa_methodlist_p *);
-
-/* ipa_callsite interface. */
-int ipa_callsite_param_count (struct cgraph_edge *);
-void ipa_callsite_param_count_set (struct cgraph_edge *, int);
-struct ipa_jump_func *ipa_callsite_param (struct cgraph_edge *, int);
-struct cgraph_node *ipa_callsite_callee (struct cgraph_edge *);
-void ipa_callsite_compute_param (struct cgraph_edge *);
-void ipa_callsite_compute_count (struct cgraph_edge *);
-
-/* ipa_method interface. */
-int ipa_method_formal_count (struct cgraph_node *);
-void ipa_method_formal_count_set (struct cgraph_node *, int);
-tree ipa_method_get_tree (struct cgraph_node *, int);
-void ipa_method_compute_tree_map (struct cgraph_node *);
-void ipa_method_formal_compute_count (struct cgraph_node *);
-void ipa_method_compute_modify (struct cgraph_node *);
-
-/* jump function interface. */
-enum jump_func_type get_type (struct ipa_jump_func *);
-union parameter_info *ipa_jf_get_info_type (struct ipa_jump_func *);
-
-/* ipa_node and ipa_edge interfaces. */
-void ipa_node_create (struct cgraph_node *);
-void ipa_free (void);
-void ipa_nodes_create (void);
-void ipa_edges_create (void);
-void ipa_edges_free (void);
-void ipa_nodes_free (void);
+ /* 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;
+};
+
+/* 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_node_params *, gimple, tree, int *,
+ HOST_WIDE_INT *, bool *);
/* Debugging interface. */
-void ipa_method_tree_print (FILE *);
-void ipa_method_modify_print (FILE *);
+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 */
projects / gcc.git / blobdiff