#include "tree.h"
#include "vec.h"
+#include "cgraph.h"
/* The following definitions and interfaces are used by
interprocedural analyses. */
-/* A jump function for a callsite represents the values passed as actual
+/* 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 IPA_CONST and Fortran
- constants are represented as IPA_CONST_REF. */
+ Integer and real constants are represented as IPA_CONST.
+ Finally, IPA_CONST_MEMBER_PTR stands for C++ member pointers constants. */
enum jump_func_type
{
- IPA_UNKNOWN,
+ IPA_UNKNOWN = 0, /* newly allocated and zeroed jump functions default */
IPA_CONST,
- IPA_CONST_REF,
+ IPA_CONST_MEMBER_PTR,
IPA_PASS_THROUGH
};
/* All formal parameters in the program have a lattice associated with it
computed by the interprocedural stage of IPCP.
There are three main values of the lattice:
- TOP - unknown.
- BOTTOM - non constant.
- CONSTANT_TYPE - constant value.
+ IPA_TOP - unknown,
+ IPA_BOTTOM - non constant,
+ IPA_CONST_VALUE - simple scalar constant,
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 IPA_CONST and Fortran
- constants are represented as IPA_CONST_REF. */
+ Integer and real constants are represented as IPA_CONST. */
enum ipa_lattice_type
{
IPA_BOTTOM,
IPA_CONST_VALUE,
- IPA_CONST_VALUE_REF,
IPA_TOP
};
-/* Represents a value of a jump function.
- 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). */
+/* Structure holding a C++ member pointer constant. Holds a pointer to the
+ method and delta offset. */
+struct ipa_member_ptr_cst
+{
+ tree pfn;
+ tree delta;
+};
+
+/* Represents a value of a jump function. formal_id is used only in jump
+ function context and represents pass-through parameter (the formal parameter
+ of the caller is passed as argument). constant represents the actual
+ constant in constant jump functions and member_cst holds constant c++ member
+ functions. */
union jump_func_value
{
unsigned int formal_id;
tree constant;
+ struct ipa_member_ptr_cst member_cst;
};
-/* A jump function for a callsite represents the values passed as actual
- arguments of the callsite. See enum jump_func_type for the various
+/* 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
{
union jump_func_value value;
};
-/* All formal parameters in the program have a cval computed by
+/* All formal parameters in the program have a cval computed by
the interprocedural stage of IPCP. See enum ipa_lattice_type for
the various types of lattices supported */
struct ipcp_lattice
{
/* The tree that will be replaced. */
tree old_tree;
- /* The new (replacing) tree. */
+ /* The new (replacing) tree. */
tree new_tree;
/* True when a substitution should be done, false otherwise. */
bool replace_p;
bool ref_p;
};
+/* Each instance of the following structure describes a statement that calls a
+ function parameter. Those referring to statements within the same function
+ are linked in a list. */
+struct ipa_param_call_note
+{
+ /* Linked list's next */
+ struct ipa_param_call_note *next;
+ /* Statement that contains the call to the parameter above. */
+ gimple stmt;
+ /* Index of the parameter that is called. */
+ unsigned int formal_id;
+ /* Expected number of executions: calculated in profile.c. */
+ gcov_type count;
+ /* Expected frequency of executions within the function. see cgraph_edge in
+ cgraph.h for more on this. */
+ int frequency;
+ /* Depth of loop nest, 1 means no loop nest. */
+ int loop_nest;
+ /* Set when we have already found the target to be a compile time constant
+ and turned this into an edge or when the note was found unusable for some
+ reason. */
+ bool processed;
+};
+
+/* Structure describing a single formal parameter. */
+struct ipa_param_descriptor
+{
+ /* IPA-CP lattice. */
+ struct ipcp_lattice ipcp_lattice;
+ /* PARAM_DECL of this parameter. */
+ tree decl;
+ /* Whether the value parameter has been modified within the function. */
+ unsigned modified : 1;
+ /* Whether the parameter has been used as a call destination. */
+ unsigned called : 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
{
/* Number of formal parameters of this function. When set to 0,
this function's parameters would not be analyzed by the different
stages of IPA CP. */
int param_count;
- /* Array of lattices. */
- struct ipcp_lattice *ipcp_lattices;
- /* Mapping each parameter to its PARM_DECL tree. */
- tree *param_decls;
- /* Indicating which parameter is modified in its function. */
- bool *modified_flags;
+ /* Pointer to an array of structures describing individual formal
+ parameters. */
+ struct ipa_param_descriptor *params;
+ /* List of structures enumerating calls to a formal parameter. */
+ struct ipa_param_call_note *param_calls;
/* 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 functions. Expresses the
- ratio between the direct calls and sum of all invocations of
- this function (given by profiling info). It is used to calculate
+ 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;
/* Whether this function is called with variable number of actual
arguments. */
unsigned called_with_var_arguments : 1;
+ /* Whether the modification analysis has already been performed. */
+ unsigned modification_analysis_done : 1;
+ /* Whether the param uses analysis has already been performed. */
+ unsigned uses_analysis_done : 1;
};
/* ipa_node_params access functions. Please use these to access fields that
are or will be shared among various passes. */
/* Set the number of formal parameters. */
+
static inline void
ipa_set_param_count (struct ipa_node_params *info, int count)
{
}
/* Return the number of formal parameters. */
+
static inline int
ipa_get_param_count (struct ipa_node_params *info)
{
return info->param_count;
}
-/* Returns the declaration of ith param of the corresponding node. Note there
- is no setter function as this array is built just once using
- ipa_create_param_decls_array. */
+/* 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_ith_param (struct ipa_node_params *info, int i)
+ipa_get_param (struct ipa_node_params *info, int i)
+{
+ return info->params[i].decl;
+}
+
+/* Return the modification flag corresponding to the Ith formal parameter of
+ the function associated with INFO. Note that there is no setter method as
+ the goal is to set all flags when building the array in
+ ipa_detect_param_modifications. */
+
+static inline bool
+ipa_is_param_modified (struct ipa_node_params *info, int i)
{
- return info->param_decls[i];
+ return info->params[i].modified;
}
-/* Returns the modification flag corresponding to the ith parameter. Note
- there is no setter method as the goal is to set all flags when building the
- array in ipa_detect_param_modifications. */
+/* Return the called flag corresponding to the Ith formal parameter of the
+ function associated with INFO. Note that there is no setter method as the
+ goal is to set all flags when building the array in
+ ipa_detect_called_params. */
+
static inline bool
-ipa_is_ith_param_modified (struct ipa_node_params *info, int i)
+ipa_is_param_called (struct ipa_node_params *info, int i)
{
- return info->modified_flags[i];
+ return info->params[i].called;
}
/* Flag this node as having callers with variable number of arguments. */
+
static inline void
ipa_set_called_with_variable_arg (struct ipa_node_params *info)
{
}
/* Have we detected this node was called with variable number of arguments? */
+
static inline bool
ipa_is_called_with_var_arguments (struct ipa_node_params *info)
{
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)
{
}
/* Return the number of actual arguments. */
+
static inline int
ipa_get_cs_argument_count (struct ipa_edge_args *args)
{
/* 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)
{
typedef struct ipa_node_params ipa_node_params_t;
typedef struct ipa_edge_args ipa_edge_args_t;
-/* Types of vectors hodling the infos. */
+/* 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);
void ipa_free_all_node_params (void);
void ipa_free_all_edge_args (void);
void free_all_ipa_structures_after_ipa_cp (void);
+void free_all_ipa_structures_after_iinln (void);
void ipa_register_cgraph_hooks (void);
/* This function ensures the array of node param infos is big enough to
- accomdate a structure for all nodes and realloacates it if not. */
+ accommodate a structure for all nodes and reallocates it if not. */
+
static inline void
ipa_check_create_node_params (void)
{
ipa_node_params_vector, cgraph_max_uid + 1);
}
-/* This function ensures the array of adge arguments infos is big enough to
- accomdate a structure for all edges and realloacates it if not. */
+/* 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)
{
cgraph_edge_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_length (ipa_edge_args_t,
+ ipa_edge_args_vector));
+}
+
/* A function list element. It is used to create a temporary worklist used in
the propagation stage of IPCP. (can be used for more IPA optimizations) */
struct ipa_func_list
void ipa_compute_jump_functions (struct cgraph_edge *);
void ipa_count_arguments (struct cgraph_edge *);
-/* Function parameters related computations. */
-void ipa_count_formal_params (struct cgraph_node *);
-void ipa_create_param_decls_array (struct cgraph_node *);
+/* Function formal parameters related computations. */
+void ipa_initialize_node_params (struct cgraph_node *node);
void ipa_detect_param_modifications (struct cgraph_node *);
+void ipa_analyze_params_uses (struct cgraph_node *);
+bool ipa_propagate_indirect_call_infos (struct cgraph_edge *cs,
+ VEC (cgraph_edge_p, heap) **new_edges);
/* Debugging interface. */
-void ipa_print_all_tree_maps (FILE *);
-void ipa_print_all_params_modified (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);
#endif /* IPA_PROP_H */
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