/* Data structures and declarations used for reading and writing
GIMPLE to a file stream.
- Copyright (C) 2009-2014 Free Software Foundation, Inc.
+ Copyright (C) 2009-2016 Free Software Foundation, Inc.
Contributed by Doug Kwan <dougkwan@google.com>
This file is part of GCC.
#define GCC_LTO_STREAMER_H
#include "plugin-api.h"
-#include "hash-table.h"
-#include "target.h"
-#include "cgraph.h"
-#include "vec.h"
-#include "alloc-pool.h"
#include "gcov-io.h"
#include "diagnostic.h"
-#include "pointer-set.h"
/* Define when debugging the LTO streamer. This causes the writer
to output the numeric value for the memory address of the tree node
String are represented in the table as pairs, a length in ULEB128
form followed by the data for the string. */
-/* The string that is the prefix on the section names we make for lto.
- For decls the DECL_ASSEMBLER_NAME is appended to make the section
- name for the functions and static_initializers. For other types of
- sections a '.' and the section type are appended. */
-#define LTO_SECTION_NAME_PREFIX ".gnu.lto_"
-
-#define LTO_major_version 3
+#define LTO_major_version 5
#define LTO_minor_version 0
typedef unsigned char lto_decl_flags_t;
LTO_section_cgraph_opt_sum,
LTO_section_inline_summary,
LTO_section_ipcp_transform,
+ LTO_section_ipa_icf,
+ LTO_section_offload_table,
+ LTO_section_mode_table,
LTO_N_SECTION_TYPES /* Must be last. */
};
unsigned int idx) \
{ \
struct lto_in_decl_state *state = data->current_decl_state; \
- gcc_assert (idx < state->streams[LTO_DECL_STREAM_## UPPER_NAME].size); \
- return state->streams[LTO_DECL_STREAM_## UPPER_NAME].trees[idx]; \
+ return (*state->streams[LTO_DECL_STREAM_## UPPER_NAME])[idx]; \
} \
\
static inline unsigned int \
lto_file_decl_data_num_ ## name ## s (struct lto_file_decl_data *data) \
{ \
struct lto_in_decl_state *state = data->current_decl_state; \
- return state->streams[LTO_DECL_STREAM_## UPPER_NAME].size; \
+ return vec_safe_length (state->streams[LTO_DECL_STREAM_## UPPER_NAME]); \
}
const char *,
size_t);
+/* The location cache holds expanded locations for streamed in trees.
+ This is done to reduce memory usage of libcpp linemap that strongly preffers
+ locations to be inserted in the soruce order. */
+
+class lto_location_cache
+{
+public:
+ /* Apply all changes in location cache. Add locations into linemap and patch
+ trees. */
+ bool apply_location_cache ();
+ /* Tree merging did not suceed; mark all changes in the cache as accepted. */
+ void accept_location_cache ();
+ /* Tree merging did suceed; throw away recent changes. */
+ void revert_location_cache ();
+ void input_location (location_t *loc, struct bitpack_d *bp,
+ struct data_in *data_in);
+ lto_location_cache ()
+ : loc_cache (), accepted_length (0), current_file (NULL), current_line (0),
+ current_col (0), current_sysp (false), current_loc (UNKNOWN_LOCATION)
+ {
+ gcc_assert (!current_cache);
+ current_cache = this;
+ }
+ ~lto_location_cache ()
+ {
+ apply_location_cache ();
+ gcc_assert (current_cache == this);
+ current_cache = NULL;
+ }
+
+ /* There can be at most one instance of location cache (combining multiple
+ would bring it out of sync with libcpp linemap); point to current
+ one. */
+ static lto_location_cache *current_cache;
+
+private:
+ static int cmp_loc (const void *pa, const void *pb);
+
+ struct cached_location
+ {
+ const char *file;
+ location_t *loc;
+ int line, col;
+ bool sysp;
+ };
+
+ /* The location cache. */
+
+ auto_vec<cached_location> loc_cache;
+
+ /* Accepted entries are ones used by trees that are known to be not unified
+ by tree merging. */
+
+ int accepted_length;
+
+ /* Bookkeeping to remember state in between calls to lto_apply_location_cache
+ When streaming gimple, the location cache is not used and thus
+ lto_apply_location_cache happens per location basis. It is then
+ useful to avoid redundant calls of linemap API. */
+
+ const char *current_file;
+ int current_line;
+ int current_col;
+ bool current_sysp;
+ location_t current_loc;
+};
+
/* Structure used as buffer for reading an LTO file. */
-struct lto_input_block
+class lto_input_block
{
+public:
+ /* Special constructor for the string table, it abuses this to
+ do random access but use the uhwi decoder. */
+ lto_input_block (const char *data_, unsigned int p_, unsigned int len_,
+ const unsigned char *mode_table_)
+ : data (data_), mode_table (mode_table_), p (p_), len (len_) {}
+ lto_input_block (const char *data_, unsigned int len_,
+ const unsigned char *mode_table_)
+ : data (data_), mode_table (mode_table_), p (0), len (len_) {}
+
const char *data;
+ const unsigned char *mode_table;
unsigned int p;
unsigned int len;
};
-#define LTO_INIT_INPUT_BLOCK(BASE,D,P,L) \
- do { \
- BASE.data = D; \
- BASE.p = P; \
- BASE.len = L; \
- } while (0)
-
-#define LTO_INIT_INPUT_BLOCK_PTR(BASE,D,P,L) \
- do { \
- BASE->data = D; \
- BASE->p = P; \
- BASE->len = L; \
- } while (0)
-
/* The is the first part of the record for a function or constructor
in the .o file. */
int16_t minor_version;
};
-/* The header for a function body. */
-struct lto_function_header
+/* The is the first part of the record in an LTO file for many of the
+ IPA passes. */
+struct lto_simple_header : lto_header
{
- /* The header for all types of sections. */
- struct lto_header lto_header;
-
- /* Number of labels with names. */
- int32_t num_named_labels;
-
- /* Number of labels without names. */
- int32_t num_unnamed_labels;
-
- /* Size compressed or 0 if not compressed. */
- int32_t compressed_size;
-
- /* Size of names for named labels. */
- int32_t named_label_size;
-
- /* Size of the cfg. */
- int32_t cfg_size;
-
/* Size of main gimple body of function. */
int32_t main_size;
+};
+struct lto_simple_header_with_strings : lto_simple_header
+{
/* Size of the string table. */
int32_t string_size;
};
+/* The header for a function body. */
+struct lto_function_header : lto_simple_header_with_strings
+{
+ /* Size of the cfg. */
+ int32_t cfg_size;
+};
+
/* Structure describing a symbol section. */
-struct lto_decl_header
+struct lto_decl_header : lto_simple_header_with_strings
{
- /* The header for all types of sections. */
- struct lto_header lto_header;
-
/* Size of region for decl state. */
int32_t decl_state_size;
/* Number of nodes in globals stream. */
int32_t num_nodes;
-
- /* Size of region for expressions, decls, types, etc. */
- int32_t main_size;
-
- /* Size of the string table. */
- int32_t string_size;
-};
-
-
-/* Structure describing top level asm()s. */
-struct lto_asm_header
-{
- /* The header for all types of sections. */
- struct lto_header lto_header;
-
- /* Size compressed or 0 if not compressed. */
- int32_t compressed_size;
-
- /* Size of region for expressions, decls, types, etc. */
- int32_t main_size;
-
- /* Size of the string table. */
- int32_t string_size;
};
struct lto_symtab_encoder_d
{
vec<lto_encoder_entry> nodes;
- pointer_map_t *map;
+ hash_map<symtab_node *, size_t> *map;
};
typedef struct lto_symtab_encoder_d *lto_symtab_encoder_t;
-
-/* Mapping from indices to trees. */
-struct GTY(()) lto_tree_ref_table
-{
- /* Array of referenced trees . */
- tree * GTY((length ("%h.size"))) trees;
-
- /* Size of array. */
- unsigned int size;
-};
-
-
/* The lto_tree_ref_encoder struct is used to encode trees into indices. */
struct lto_tree_ref_encoder
{
- pointer_map<unsigned> *tree_hash_table; /* Maps pointers to indices. */
+ hash_map<tree, unsigned> *tree_hash_table; /* Maps pointers to indices. */
vec<tree> trees; /* Maps indices to pointers. */
};
/* Structure to hold states of input scope. */
-struct GTY(()) lto_in_decl_state
+struct GTY((for_user)) lto_in_decl_state
{
/* Array of lto_in_decl_buffers to store type and decls streams. */
- struct lto_tree_ref_table streams[LTO_N_DECL_STREAMS];
+ vec<tree, va_gc> *streams[LTO_N_DECL_STREAMS];
/* If this in-decl state is associated with a function. FN_DECL
point to the FUNCTION_DECL. */
tree fn_decl;
+
+ /* True if decl state is compressed. */
+ bool compressed;
};
typedef struct lto_in_decl_state *lto_in_decl_state_ptr;
+struct decl_state_hasher : ggc_ptr_hash<lto_in_decl_state>
+{
+ static hashval_t
+ hash (lto_in_decl_state *s)
+ {
+ return htab_hash_pointer (s->fn_decl);
+ }
+
+ static bool
+ equal (lto_in_decl_state *a, lto_in_decl_state *b)
+ {
+ return a->fn_decl == b->fn_decl;
+ }
+};
/* The structure that holds all of the vectors of global types,
decls and cgraph nodes used in the serialization of this file. */
/* If this out-decl state belongs to a function, fn_decl points to that
function. Otherwise, it is NULL. */
tree fn_decl;
+
+ /* True if decl state is compressed. */
+ bool compressed;
};
typedef struct lto_out_decl_state *lto_out_decl_state_ptr;
lto_symtab_encoder_t GTY((skip)) symtab_node_encoder;
/* Hash table maps lto-related section names to location in file. */
- htab_t GTY((param_is (struct lto_in_decl_state))) function_decl_states;
+ hash_table<decl_state_hasher> *function_decl_states;
/* The .o file that these offsets relate to. */
const char *GTY((skip)) file_name;
struct gcov_ctr_summary GTY((skip)) profile_info;
/* Map assigning declarations their resolutions. */
- pointer_map_t * GTY((skip)) resolution_map;
+ hash_map<tree, ld_plugin_symbol_resolution> * GTY((skip)) resolution_map;
+
+ /* Mode translation table. */
+ const unsigned char *mode_table;
};
typedef struct lto_file_decl_data *lto_file_decl_data_ptr;
unsigned int total_size;
};
-/* The is the first part of the record in an LTO file for many of the
- IPA passes. */
-struct lto_simple_header
-{
- /* The header for all types of sections. */
- struct lto_header lto_header;
-
- /* Size of main gimple body of function. */
- int32_t main_size;
-
- /* Size of main stream when compressed. */
- int32_t compressed_size;
-};
-
/* A simple output block. This can be used for simple IPA passes that
do not need more than one stream. */
struct lto_simple_output_block
/* Hashtable helpers. */
-struct string_slot_hasher : typed_noop_remove <string_slot>
+struct string_slot_hasher : nofree_ptr_hash <string_slot>
{
- typedef string_slot value_type;
- typedef string_slot compare_type;
- static inline hashval_t hash (const value_type *);
- static inline bool equal (const value_type *, const compare_type *);
+ static inline hashval_t hash (const string_slot *);
+ static inline bool equal (const string_slot *, const string_slot *);
};
/* Returns a hash code for DS. Adapted from libiberty's htab_hash_string
to support strings that may not end in '\0'. */
inline hashval_t
-string_slot_hasher::hash (const value_type *ds)
+string_slot_hasher::hash (const string_slot *ds)
{
hashval_t r = ds->len;
int i;
/* Returns nonzero if DS1 and DS2 are equal. */
inline bool
-string_slot_hasher::equal (const value_type *ds1, const compare_type *ds2)
+string_slot_hasher::equal (const string_slot *ds1, const string_slot *ds2)
{
if (ds1->len == ds2->len)
return memcmp (ds1->s, ds2->s, ds1->len) == 0;
/* The hash table that contains the set of strings we have seen so
far and the indexes assigned to them. */
- hash_table <string_slot_hasher> string_hash_table;
+ hash_table<string_slot_hasher> *string_hash_table;
- /* The current cgraph_node that we are currently serializing. Null
+ /* The current symbol that we are currently serializing. Null
if we are serializing something else. */
- struct cgraph_node *cgraph_node;
+ symtab_node *symbol;
/* These are the last file and line that were seen in the stream.
If the current node differs from these, it needs to insert
const char *current_file;
int current_line;
int current_col;
-
- /* True if writing globals and types. */
- bool global;
+ bool current_sysp;
/* Cache of nodes written in this section. */
struct streamer_tree_cache_d *writer_cache;
/* The global decls and types. */
struct lto_file_decl_data *file_data;
- /* All of the labels. */
- tree *labels;
-
/* The string table. */
const char *strings;
/* The length of the string table. */
unsigned int strings_len;
- /* Number of named labels. Used to find the index of unnamed labels
- since they share space with the named labels. */
- unsigned int num_named_labels;
-
- /* Number of unnamed labels. */
- unsigned int num_unnamed_labels;
-
/* Maps each reference number to the resolution done by the linker. */
vec<ld_plugin_symbol_resolution_t> globals_resolution;
/* Cache of pickled nodes. */
struct streamer_tree_cache_d *reader_cache;
+
+ /* Cache of source code location. */
+ lto_location_cache location_cache;
};
extern struct lto_file_decl_data **lto_get_file_decl_data (void);
extern const char *lto_get_section_data (struct lto_file_decl_data *,
enum lto_section_type,
- const char *, size_t *);
+ const char *, size_t *,
+ bool decompress = false);
+extern const char *lto_get_raw_section_data (struct lto_file_decl_data *,
+ enum lto_section_type,
+ const char *, size_t *);
extern void lto_free_section_data (struct lto_file_decl_data *,
- enum lto_section_type,
- const char *, const char *, size_t);
+ enum lto_section_type,
+ const char *, const char *, size_t,
+ bool decompress = false);
+extern void lto_free_raw_section_data (struct lto_file_decl_data *,
+ enum lto_section_type,
+ const char *, const char *, size_t);
extern htab_t lto_create_renaming_table (void);
extern void lto_record_renamed_decl (struct lto_file_decl_data *,
const char *, const char *);
const char *);
extern struct lto_in_decl_state *lto_new_in_decl_state (void);
extern void lto_delete_in_decl_state (struct lto_in_decl_state *);
-extern hashval_t lto_hash_in_decl_state (const void *);
-extern int lto_eq_in_decl_state (const void *, const void *);
extern struct lto_in_decl_state *lto_get_function_in_decl_state (
struct lto_file_decl_data *, tree);
extern void lto_free_function_in_decl_state (struct lto_in_decl_state *);
/* In lto-section-out.c */
extern void lto_begin_section (const char *, bool);
extern void lto_end_section (void);
+extern void lto_write_data (const void *, unsigned int);
+extern void lto_write_raw_data (const void *, unsigned int);
extern void lto_write_stream (struct lto_output_stream *);
-extern void lto_output_data_stream (struct lto_output_stream *, const void *,
- size_t);
extern bool lto_output_decl_index (struct lto_output_stream *,
struct lto_tree_ref_encoder *,
tree, unsigned int *);
/* In lto-streamer.c. */
+
+/* Set when streaming LTO for offloading compiler. */
+extern bool lto_stream_offload_p;
+
extern const char *lto_tag_name (enum LTO_tags);
extern bitmap lto_bitmap_alloc (void);
extern void lto_bitmap_free (bitmap);
extern void lto_input_function_body (struct lto_file_decl_data *,
struct cgraph_node *,
const char *);
+extern void lto_input_variable_constructor (struct lto_file_decl_data *,
+ struct varpool_node *,
+ const char *);
extern void lto_input_constructors_and_inits (struct lto_file_decl_data *,
const char *);
extern void lto_input_toplevel_asms (struct lto_file_decl_data *, int);
+extern void lto_input_mode_table (struct lto_file_decl_data *);
extern struct data_in *lto_data_in_create (struct lto_file_decl_data *,
const char *, unsigned,
vec<ld_plugin_symbol_resolution_t> );
extern void lto_data_in_delete (struct data_in *);
extern void lto_input_data_block (struct lto_input_block *, void *, size_t);
-location_t lto_input_location (struct bitpack_d *, struct data_in *);
+void lto_input_location (location_t *, struct bitpack_d *, struct data_in *);
+location_t stream_input_location_now (struct bitpack_d *bp,
+ struct data_in *data);
tree lto_input_tree_ref (struct lto_input_block *, struct data_in *,
struct function *, enum LTO_tags);
void lto_tag_check_set (enum LTO_tags, int, ...);
struct lto_output_stream *,
struct lto_out_decl_state *);
void lto_output_location (struct output_block *, struct bitpack_d *, location_t);
+void lto_output_init_mode_table (void);
/* In lto-cgraph.c */
+extern bool asm_nodes_output;
lto_symtab_encoder_t lto_symtab_encoder_new (bool);
int lto_symtab_encoder_encode (lto_symtab_encoder_t, symtab_node *);
void lto_symtab_encoder_delete (lto_symtab_encoder_t);
varpool_node *);
void output_symtab (void);
void input_symtab (void);
+void output_offload_tables (void);
+void input_offload_tables (void);
bool referenced_from_other_partition_p (struct ipa_ref_list *,
lto_symtab_encoder_t);
bool reachable_from_other_partition_p (struct cgraph_node *,
lto_symtab_encoder_t);
-bool referenced_from_this_partition_p (struct ipa_ref_list *,
+bool referenced_from_this_partition_p (symtab_node *,
lto_symtab_encoder_t);
bool reachable_from_this_partition_p (struct cgraph_node *,
lto_symtab_encoder_t);
lto_symtab_encoder_t compute_ltrans_boundary (lto_symtab_encoder_t encoder);
+void select_what_to_stream (void);
+
+/* In options-save.c. */
+void cl_target_option_stream_out (struct output_block *, struct bitpack_d *,
+ struct cl_target_option *);
+
+void cl_target_option_stream_in (struct data_in *,
+ struct bitpack_d *,
+ struct cl_target_option *);
+
+void cl_optimization_stream_out (struct bitpack_d *, struct cl_optimization *);
+void cl_optimization_stream_in (struct bitpack_d *, struct cl_optimization *);
-/* In lto-symtab.c. */
-extern void lto_symtab_merge_decls (void);
-extern void lto_symtab_merge_symbols (void);
-extern tree lto_symtab_prevailing_decl (tree decl);
/* In lto-opts.c. */
static inline void
lto_init_tree_ref_encoder (struct lto_tree_ref_encoder *encoder)
{
- encoder->tree_hash_table = new pointer_map<unsigned>;
+ encoder->tree_hash_table = new hash_map<tree, unsigned> (251);
encoder->trees.create (0);
}
lto_destroy_tree_ref_encoder (struct lto_tree_ref_encoder *encoder)
{
/* Hash table may be delete already. */
- if (encoder->tree_hash_table)
- delete encoder->tree_hash_table;
+ delete encoder->tree_hash_table;
+ encoder->tree_hash_table = NULL;
encoder->trees.release ();
}
lto_symtab_encoder_lookup (lto_symtab_encoder_t encoder,
symtab_node *node)
{
- void **slot = pointer_map_contains (encoder->map, node);
- return (slot && *slot ? (size_t) *(slot) - 1 : LCC_NOT_FOUND);
+ size_t *slot = encoder->map->get (node);
+ return (slot && *slot ? *(slot) - 1 : LCC_NOT_FOUND);
}
/* Return true if iterator LSE points to nothing. */
static inline struct cgraph_node *
lsei_cgraph_node (lto_symtab_encoder_iterator lsei)
{
- return cgraph (lsei.encoder->nodes[lsei.index].node);
+ return dyn_cast<cgraph_node *> (lsei.encoder->nodes[lsei.index].node);
}
/* Return the node pointed to by LSI. */
static inline varpool_node *
lsei_varpool_node (lto_symtab_encoder_iterator lsei)
{
- return varpool (lsei.encoder->nodes[lsei.index].node);
+ return dyn_cast<varpool_node *> (lsei.encoder->nodes[lsei.index].node);
}
/* Return the cgraph node corresponding to REF using ENCODER. */
{
lsei_next (lsei);
while (!lsei_end_p (*lsei)
- && (!is_a <cgraph_node> (lsei_node (*lsei))
+ && (!is_a <cgraph_node *> (lsei_node (*lsei))
|| !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei))))
lsei_next (lsei);
}
if (lsei_end_p (lsei))
return lsei;
- if (!is_a <cgraph_node> (lsei_node (lsei))
+ if (!is_a <cgraph_node *> (lsei_node (lsei))
|| !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei)))
lsei_next_function_in_partition (&lsei);
{
lsei_next (lsei);
while (!lsei_end_p (*lsei)
- && (!is_a <varpool_node> (lsei_node (*lsei))
+ && (!is_a <varpool_node *> (lsei_node (*lsei))
|| !lto_symtab_encoder_in_partition_p (lsei->encoder, lsei_node (*lsei))))
lsei_next (lsei);
}
if (lsei_end_p (lsei))
return lsei;
- if (!is_a <varpool_node> (lsei_node (lsei))
+ if (!is_a <varpool_node *> (lsei_node (lsei))
|| !lto_symtab_encoder_in_partition_p (encoder, lsei_node (lsei)))
lsei_next_variable_in_partition (&lsei);
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