/* 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_JF_CONST.
- Finally, IPA_JF_CONST_MEMBER_PTR stands for C++ member pointers
- constants. */
+
+ 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_CONST_MEMBER_PTR stands for C++ member pointers, other constants are
+ represented with IPA_JF_CONST.
+
+ In addition to "ordinary" pass through functions represented by
+ IPA_JF_PASS_THROUGH, IPA_JF_ANCESTOR represents getting addresses of of
+ ancestor fields in C++ (e.g. &this_1(D)->D.1766.D.1756). */
enum jump_func_type
{
IPA_JF_UNKNOWN = 0, /* newly allocated and zeroed jump functions default */
IPA_JF_CONST,
IPA_JF_CONST_MEMBER_PTR,
- IPA_JF_PASS_THROUGH
+ IPA_JF_PASS_THROUGH,
+ IPA_JF_ANCESTOR
};
/* All formal parameters in the program have a lattice associated with it
IPA_TOP
};
+
+/* Structure holding data required to describe a pass-through jump function. */
+
+struct 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;
+};
+
+/* Structure holding data required to describe and ancestor pass throu
+ funkci. */
+
+struct ipa_ancestor_jf_data
+{
+ /* 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;
+};
+
/* Structure holding a C++ member pointer constant. Holds a pointer to the
method and delta offset. */
struct ipa_member_ptr_cst
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. */
+/* 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
{
- unsigned int formal_id;
tree constant;
+ struct ipa_pass_through_data pass_through;
+ struct ipa_ancestor_jf_data ancestor;
struct ipa_member_ptr_cst member_cst;
};
tree constant;
};
-/* Represent which DECL tree (or reference to such tree)
- will be replaced by another tree while versioning. */
-struct ipa_replace_map
-{
- /* 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;
-};
-
/* 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. */
/* Statement that contains the call to the parameter above. */
gimple stmt;
/* Index of the parameter that is called. */
- unsigned int formal_id;
+ 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
unsigned modification_analysis_done : 1;
/* Whether the param uses analysis has already been performed. */
unsigned uses_analysis_done : 1;
+ /* Whether the function is enqueued in an ipa_func_list. */
+ unsigned node_enqueued : 1;
};
/* ipa_node_params access functions. Please use these to access fields that
/* ipa_func_list interface. */
struct ipa_func_list *ipa_init_func_list (void);
-void ipa_push_func_to_list (struct ipa_func_list **, struct cgraph_node *);
+void ipa_push_func_to_list_1 (struct ipa_func_list **, struct cgraph_node *,
+ struct ipa_node_params *);
struct cgraph_node *ipa_pop_func_from_list (struct ipa_func_list **);
+/* Add cgraph NODE to the worklist WL if it is not already in one. */
+
+static inline void
+ipa_push_func_to_list (struct ipa_func_list **wl, struct cgraph_node *node)
+{
+ struct ipa_node_params *info = IPA_NODE_REF (node);
+
+ if (!info->node_enqueued)
+ ipa_push_func_to_list_1 (wl, node, info);
+}
+
/* Callsite related calculations. */
void ipa_compute_jump_functions (struct cgraph_edge *);
void ipa_count_arguments (struct cgraph_edge *);
void ipa_print_node_jump_functions (FILE *f, struct cgraph_node *node);
void ipa_print_all_jump_functions (FILE * f);
+/* 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;
+
+ /* The new declaration when creating/replacing a parameter. Created by
+ ipa_modify_formal_parameters, useful for functions modifying the body
+ accordingly. */
+ tree reduction;
+
+ /* 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;
+
+ /* 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.) */
+ int base_index;
+
+ /* This new parameter is an unmodified parameter at index base_index. */
+ unsigned copy_param : 1;
+
+ /* 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;
+
+ /* 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;
+
+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,
+ 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);
+
+/* From tree-sra.c: */
+bool build_ref_for_offset (tree *, tree, HOST_WIDE_INT, tree, bool);
+
#endif /* IPA_PROP_H */
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