/* Interprocedural analyses.
- Copyright (C) 2005, 2007, 2008, 2009, 2010
- Free Software Foundation, Inc.
+ Copyright (C) 2005-2016 Free Software Foundation, Inc.
This file is part of GCC.
#ifndef IPA_PROP_H
#define IPA_PROP_H
-#include "tree.h"
-#include "vec.h"
-#include "cgraph.h"
-#include "gimple.h"
-#include "alloc-pool.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
argument.
Unknown - neither of the above.
- IPA_JF_CONST_MEMBER_PTR stands for C++ member pointers, it is a special
- constant in this regard because it is in fact a structure consisting of two
- values. Other constants are represented with IPA_JF_CONST.
-
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++
+ getting addresses 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.
parameter or can apply one simple binary operation to it (such jump
functions are called polynomial).
- IPA_JF_KNOWN_TYPE is a special type of an "unknown" function that applies
- only to pointer parameters. It means that even though we cannot prove that
- the passed value is an interprocedural constant, we still know the exact
- type of the containing object which may be valuable for devirtualization.
-
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
enum jump_func_type
{
IPA_JF_UNKNOWN = 0, /* newly allocated and zeroed jump functions default */
- IPA_JF_KNOWN_TYPE, /* represented by field base_binfo */
IPA_JF_CONST, /* represented by field costant */
- IPA_JF_CONST_MEMBER_PTR, /* represented by field member_cst */
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
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
{
/* Offset of the field representing the ancestor. */
HOST_WIDE_INT offset;
- /* TYpe of the result. */
- tree type;
/* 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;
};
-/* Structure holding a C++ member pointer constant. Holds a pointer to the
- method and delta offset. */
-struct GTY(()) ipa_member_ptr_cst
+/* 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
{
- tree pfn;
- tree delta;
+ /* 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
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
{
- tree GTY ((tag ("IPA_JF_KNOWN_TYPE"))) base_binfo;
- tree GTY ((tag ("IPA_JF_CONST"))) constant;
- struct ipa_member_ptr_cst GTY ((tag ("IPA_JF_CONST_MEMBER_PTR"))) member_cst;
+ 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;
};
-typedef struct ipa_param_descriptor ipa_param_descriptor_t;
-DEF_VEC_O (ipa_param_descriptor_t);
-DEF_VEC_ALLOC_O (ipa_param_descriptor_t, heap);
-struct ipcp_lattice;
-
/* 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_t, heap) *descriptors;
+ vec<ipa_param_descriptor> descriptors;
/* Pointer to an array of structures describing individual formal
parameters. */
- struct ipcp_lattice *lattices;
+ 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 values that describe
- what it has been specialized for. */
- VEC (tree, heap) *known_vals;
- /* Whether the param uses analysis has already been performed. */
- unsigned uses_analysis_done : 1;
+ /* 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 clone_for_all_contexts : 1;
+ 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;
+ /* False when there is something makes versioning impossible. */
+ unsigned versionable : 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
static inline int
ipa_get_param_count (struct ipa_node_params *info)
{
- return VEC_length (ipa_param_descriptor_t, info->descriptors);
+ return info->descriptors.length ();
}
/* Return the declaration of Ith formal parameter of the function corresponding
static inline tree
ipa_get_param (struct ipa_node_params *info, int i)
{
- return VEC_index (ipa_param_descriptor_t, info->descriptors, i)->decl;
+ 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
static inline void
ipa_set_param_used (struct ipa_node_params *info, int i, bool val)
{
- VEC_index (ipa_param_descriptor_t, info->descriptors, i)->used = 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
static inline bool
ipa_is_param_used (struct ipa_node_params *info, int i)
{
- return VEC_index (ipa_param_descriptor_t, info->descriptors, i)->used;
+ 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. */
-typedef struct GTY(()) ipa_edge_args
+struct GTY(()) ipa_edge_args
{
- /* 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 argument_count;
- /* Array of the callsite's jump function of each parameter. */
- struct ipa_jump_func GTY ((length ("%h.argument_count"))) *jump_functions;
-} ipa_edge_args_t;
+ /* 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. */
-/* Set the number of actual arguments. */
-
-static inline void
-ipa_set_cs_argument_count (struct ipa_edge_args *args, int count)
-{
- args->argument_count = count;
-}
-
/* Return the number of actual arguments. */
static inline int
ipa_get_cs_argument_count (struct ipa_edge_args *args)
{
- return args->argument_count;
+ return vec_safe_length (args->jump_functions);
}
/* Returns a pointer to the jump function for the ith argument. Please note
static inline struct ipa_jump_func *
ipa_get_ith_jump_func (struct ipa_edge_args *args, int i)
{
- gcc_assert (i >= 0 && i <= args->argument_count);
- return &args->jump_functions[i];
+ return &(*args->jump_functions)[i];
}
-/* Vectors need to have typedefs of structures. */
-typedef struct ipa_node_params ipa_node_params_t;
+/* 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];
+}
-/* Types of vectors holding the infos. */
-DEF_VEC_O (ipa_node_params_t);
-DEF_VEC_ALLOC_O (ipa_node_params_t, heap);
-DEF_VEC_O (ipa_edge_args_t);
-DEF_VEC_ALLOC_O (ipa_edge_args_t, gc);
+/* 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 VEC (ipa_node_params_t, heap) *ipa_node_params_vector;
-/* Vector where the parameter infos are actually stored. */
-extern GTY(()) VEC (ipa_edge_args_t, gc) *ipa_edge_args_vector;
+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) (VEC_index (ipa_node_params_t, \
- ipa_node_params_vector, (NODE)->uid))
-#define IPA_EDGE_REF(EDGE) (VEC_index (ipa_edge_args_t, \
- ipa_edge_args_vector, (EDGE)->uid))
+#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)
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_node_params_substructures (struct ipa_node_params *);
void ipa_free_all_node_params (void);
void ipa_free_all_edge_args (void);
-void ipa_create_all_structures_for_iinln (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_vector)
- ipa_node_params_vector = VEC_alloc (ipa_node_params_t, heap,
- cgraph_max_uid);
-
- if (VEC_length (ipa_node_params_t, ipa_node_params_vector)
- <= (unsigned) cgraph_max_uid)
- VEC_safe_grow_cleared (ipa_node_params_t, heap,
- ipa_node_params_vector, cgraph_max_uid + 1);
+ 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
static inline void
ipa_check_create_edge_args (void)
{
- if (!ipa_edge_args_vector)
- ipa_edge_args_vector = VEC_alloc (ipa_edge_args_t, gc,
- cgraph_edge_max_uid);
-
- if (VEC_length (ipa_edge_args_t, ipa_edge_args_vector)
- <= (unsigned) cgraph_edge_max_uid)
- VEC_safe_grow_cleared (ipa_edge_args_t, gc, ipa_edge_args_vector,
- cgraph_edge_max_uid + 1);
+ 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
static inline bool
ipa_edge_args_info_available_for_edge_p (struct cgraph_edge *edge)
{
- return ((unsigned) edge->uid < VEC_length (ipa_edge_args_t,
- ipa_edge_args_vector));
+ 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_p, heap) **new_edges);
+ vec<cgraph_edge *> *new_edges);
/* Indirect edge and binfo processing. */
-struct cgraph_edge *ipa_make_edge_direct_to_target (struct cgraph_edge *, tree);
+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 *agg, tree scalar,
+ HOST_WIDE_INT offset, bool by_ref,
+ bool *from_global_constant = NULL);
+bool ipa_load_from_parm_agg (struct ipa_func_body_info *fbi,
+ vec<ipa_param_descriptor> descriptors,
+ gimple *stmt, tree op, int *index_p,
+ HOST_WIDE_INT *offset_p, HOST_WIDE_INT *size_p,
+ bool *by_ref, bool *guaranteed_unmodified = NULL);
+
/* Debugging interface. */
void ipa_print_node_params (FILE *, struct cgraph_node *node);
void ipa_print_all_params (FILE *);
void ipa_print_all_jump_functions (FILE * f);
void ipcp_verify_propagated_values (void);
-extern alloc_pool ipcp_values_pool;
-extern alloc_pool ipcp_sources_pool;
+template <typename value>
+class ipcp_value;
+
+extern object_allocator<ipcp_value<tree> > ipcp_cst_values_pool;
+extern object_allocator<ipcp_value<ipa_polymorphic_call_context> >
+ ipcp_poly_ctx_values_pool;
+
+template <typename valtype>
+class ipcp_value_source;
+
+extern object_allocator<ipcp_value_source<tree> > ipcp_sources_pool;
+
+class ipcp_agg_lattice;
+
+extern object_allocator<ipcp_agg_lattice> 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
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. */
- tree reduction;
+ /* 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. */
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. (ATM
- there is no way to insert a new parameter out of the blue because there is
- no need but if it arises the code can be easily exteded to do so.) */
+ /* Zero based index of the original parameter this one is based on. */
int base_index;
- /* This new parameter is an unmodified parameter at index base_index. */
- unsigned copy_param : 1;
+ /* Whether this parameter is a new parameter, a copy of an old one,
+ or one about to be removed. */
+ enum ipa_parm_op op;
- /* 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. */
- unsigned remove_param : 1;
+ /* Storage order of the original parameter (for the cases when the new
+ parameter is a component of an original one). */
+ unsigned reverse : 1;
/* The parameter is to be passed by reference. */
unsigned by_ref : 1;
};
-typedef struct ipa_parm_adjustment ipa_parm_adjustment_t;
-DEF_VEC_O (ipa_parm_adjustment_t);
-DEF_VEC_ALLOC_O (ipa_parm_adjustment_t, heap);
-
-typedef VEC (ipa_parm_adjustment_t, heap) *ipa_parm_adjustment_vec;
+typedef vec<ipa_parm_adjustment> ipa_parm_adjustment_vec;
-VEC(tree, heap) *ipa_get_vector_of_formal_parms (tree fndecl);
-void ipa_modify_formal_parameters (tree fndecl, ipa_parm_adjustment_vec,
- const char *);
-void ipa_modify_call_arguments (struct cgraph_edge *, gimple,
+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_prop_write_jump_functions (cgraph_node_set set);
+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_cst_from_jfunc (struct ipa_node_params *info,
- struct ipa_jump_func *jfunc);
-
+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);
+void ipa_release_body_info (struct ipa_func_body_info *);
/* From tree-sra.c: */
-tree build_ref_for_offset (location_t, tree, HOST_WIDE_INT, tree,
+tree build_ref_for_offset (location_t, tree, HOST_WIDE_INT, bool, tree,
gimple_stmt_iterator *, bool);
+/* In ipa-cp.c */
+void ipa_cp_c_finalize (void);
+
#endif /* IPA_PROP_H */
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