#include "tree.h"
#include "vec.h"
+#include "cgraph.h"
/* The following definitions and interfaces are used by
interprocedural analyses. */
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. */
+ constants are represented as IPA_CONST_REF. 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
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
bool ref_p;
};
+/* ipa_param_flags contains various flags that describe how the associated
+ parameter is treated within a function. */
+struct ipa_param_flags
+{
+ /* 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;
+};
+
+/* 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;
+};
+
/* 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,
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;
+ /* Various flags describing individual parameters. */
+ struct ipa_param_flags *param_flags;
+ /* 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;
/* 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
static inline bool
ipa_is_ith_param_modified (struct ipa_node_params *info, int i)
{
- return info->modified_flags[i];
+ return info->param_flags[i].modified;
+}
+
+/* Returns the called flag corresponding o the ith paramterer. Note 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_called (struct ipa_node_params *info, int i)
+{
+ return info->param_flags[i].called;
}
/* Flag this node as having callers with variable number of arguments. */
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
void ipa_count_formal_params (struct cgraph_node *);
void ipa_create_param_decls_array (struct cgraph_node *);
void ipa_detect_param_modifications (struct cgraph_node *);
+void ipa_analyze_params_uses (struct cgraph_node *);
+void 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_param_flags (FILE * f, struct cgraph_node *node);
+void ipa_print_all_param_flags (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 */
OSDN Git Service
