/* Interprocedural analyses.
- Copyright (C) 2005-2013 Free Software Foundation, Inc.
+ Copyright (C) 2005-2014 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
aggregate part of the jump function (see description of
ipa_agg_jump_function). The flag is used only when the operation is
NOP_EXPR. */
- bool agg_preserved;
+ unsigned agg_preserved : 1;
+
+ /* When set to true, we guarantee that, if there is a C++ object pointed to
+ by this object, it does not undergo dynamic type change in the course of
+ functions decribed by this jump function. */
+ unsigned type_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. */
+ /* Type of the result.
+ When TYPE_PRESERVED is false, TYPE is NULL, since it is only
+ relevant for the devirtualization machinery. */
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. */
- bool agg_preserved;
+ unsigned agg_preserved : 1;
+ /* When set to true, we guarantee that, if there is a C++ object pointed to
+ by this object, it does not undergo dynamic type change in the course of
+ functions decribed by this jump function. */
+ unsigned type_preserved : 1;
};
/* An element in an aggegate part of a jump function describing a known value
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
- fullfill is_gimple_ip_invariant. */
+ fulfill is_gimple_ip_invariant. */
-typedef struct GTY(()) ipa_agg_jf_item
+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;
-} ipa_agg_jf_item_t;
+};
/* Aggregate jump function - i.e. description of contents of aggregates passed
struct GTY(()) ipa_agg_jump_function
{
/* Description of the individual items. */
- vec<ipa_agg_jf_item_t, va_gc> *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;
-typedef struct ipa_agg_jump_function ipa_agg_jump_function_t;
/* 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. */
-typedef struct GTY (()) ipa_jump_func
+struct GTY (()) ipa_jump_func
{
/* Aggregate contants description. See struct ipa_agg_jump_function and its
description. */
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;
-} ipa_jump_func_t;
+};
-/* Return the offset of the component that is decribed by a known type jump
+/* Return the offset of the component that is described by a known type jump
function JFUNC. */
static inline HOST_WIDE_INT
return jfunc->value.pass_through.operation;
}
-/* Return the agg_preserved flag of a pass through jump functin JFUNC. */
+/* 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)
return jfunc->value.pass_through.agg_preserved;
}
+/* Return the type_preserved flag of a pass through jump function JFUNC. */
+
+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.type_preserved;
+}
+
/* Return the offset of an ancestor jump function JFUNC. */
static inline HOST_WIDE_INT
return jfunc->value.ancestor.formal_id;
}
-/* Return the agg_preserved flag of an ancestor jump functin JFUNC. */
+/* 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)
return jfunc->value.ancestor.agg_preserved;
}
+/* Return the type_preserved flag of an ancestor jump function JFUNC. */
+
+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.type_preserved;
+}
+
/* Summary describing a single formal parameter. */
struct ipa_param_descriptor
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;
struct ipcp_lattice;
/* ipa_node_params stores information related to formal parameters of functions
{
/* Information about individual formal parameters that are gathered when
summaries are generated. */
- vec<ipa_param_descriptor_t> descriptors;
+ vec<ipa_param_descriptor> descriptors;
/* Pointer to an array of structures describing individual formal
parameters. */
struct ipcp_param_lattices *lattices;
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. */
/* 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
{
/* Vector of the callsite's jump function of each parameter. */
- vec<ipa_jump_func_t, va_gc> *jump_functions;
-} ipa_edge_args_t;
+ vec<ipa_jump_func, va_gc> *jump_functions;
+};
/* ipa_edge_args access functions. Please use these to access fields that
are or will be shared among various passes. */
return &(*args->jump_functions)[i];
}
-/* Vectors need to have typedefs of structures. */
-typedef struct ipa_node_params ipa_node_params_t;
-
/* Types of vectors holding the infos. */
/* Vector where the parameter infos are actually stored. */
-extern vec<ipa_node_params_t> ipa_node_params_vector;
+extern vec<ipa_node_params> ipa_node_params_vector;
/* Vector of known aggregate values in cloned nodes. */
extern GTY(()) vec<ipa_agg_replacement_value_p, va_gc> *ipa_node_agg_replacements;
/* Vector where the parameter infos are actually stored. */
-extern GTY(()) vec<ipa_edge_args_t, va_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. */
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
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;
-
- /* 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;
+ /* 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 struct ipa_parm_adjustment ipa_parm_adjustment_t;
-
-typedef vec<ipa_parm_adjustment_t> ipa_parm_adjustment_vec;
+typedef vec<ipa_parm_adjustment> ipa_parm_adjustment_vec;
vec<tree> ipa_get_vector_of_formal_parms (tree fndecl);
-void ipa_modify_formal_parameters (tree fndecl, ipa_parm_adjustment_vec,
- const char *);
+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 *, gimple,
ipa_parm_adjustment_vec);
ipa_parm_adjustment_vec ipa_combine_adjustments (ipa_parm_adjustment_vec,
tree ipa_value_from_jfunc (struct ipa_node_params *info,
struct ipa_jump_func *jfunc);
unsigned int ipcp_transform_function (struct cgraph_node *node);
+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: */
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